/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * Copyright (C) 2001 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . */ /* * Modified by the GTK+ Team and others 1997-2004. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include #include #include "gtkrange.h" #include "gtkadjustment.h" #include "gtkcolorscaleprivate.h" #include "gtkintl.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkorientableprivate.h" #include "gtkprivate.h" #include "gtkscale.h" #include "gtkscrollbar.h" #include "gtktypebuiltins.h" #include "gtkwindow.h" #include "a11y/gtkrangeaccessible.h" /** * SECTION:gtkrange * @Short_description: Base class for widgets which visualize an adjustment * @Title: GtkRange * * #GtkRange is the common base class for widgets which visualize an * adjustment, e.g #GtkScale or #GtkScrollbar. * * Apart from signals for monitoring the parameters of the adjustment, * #GtkRange provides properties and methods for influencing the sensitivity * of the "steppers". It also provides properties and methods for setting a * "fill level" on range widgets. See gtk_range_set_fill_level(). */ #define SCROLL_DELAY_FACTOR 5 /* Scroll repeat multiplier */ #define UPDATE_DELAY 300 /* Delay for queued update */ typedef struct _GtkRangeStepTimer GtkRangeStepTimer; typedef enum { MOUSE_OUTSIDE, MOUSE_STEPPER_A, MOUSE_STEPPER_B, MOUSE_STEPPER_C, MOUSE_STEPPER_D, MOUSE_TROUGH, MOUSE_SLIDER, MOUSE_WIDGET /* inside widget but not in any of the above GUI elements */ } MouseLocation; struct _GtkRangePrivate { MouseLocation mouse_location; /* last mouse coords we got, or -1 if mouse is outside the range */ gint mouse_x; gint mouse_y; MouseLocation grab_location; /* "grabbed" mouse location, OUTSIDE for no grab */ GtkRangeStepTimer *timer; GtkAdjustment *adjustment; GtkSensitivityType lower_sensitivity; GtkSensitivityType upper_sensitivity; GdkDevice *grab_device; GdkRectangle range_rect; /* Area of entire stepper + trough assembly in widget->window coords */ /* These are in widget->window coordinates */ GdkRectangle stepper_a; GdkRectangle stepper_b; GdkRectangle stepper_c; GdkRectangle stepper_d; GdkRectangle trough; /* The trough rectangle is the area the thumb can slide in, not the entire range_rect */ GdkRectangle slider; GdkWindow *event_window; GQuark slider_detail_quark; GQuark stepper_detail_quark[4]; GtkOrientation orientation; gdouble fill_level; gdouble *marks; gint *mark_pos; gint min_slider_size; gint n_marks; gint round_digits; /* Round off value to this many digits, -1 for no rounding */ gint slide_initial_slider_position; gint slide_initial_coordinate; gint slider_start; /* Slider range along the long dimension, in widget->window coords */ gint slider_end; /* Steppers are: < > ---- < > * a b c d */ guint has_stepper_a : 1; guint has_stepper_b : 1; guint has_stepper_c : 1; guint has_stepper_d : 1; guint flippable : 1; guint inverted : 1; guint need_recalc : 1; guint recalc_marks : 1; guint slider_size_fixed : 1; guint trough_click_forward : 1; /* trough click was on the forward side of slider */ /* Stepper sensitivity */ guint lower_sensitive : 1; guint upper_sensitive : 1; /* The range has an origin, should be drawn differently. Used by GtkScale */ guint has_origin : 1; /* Fill level */ guint show_fill_level : 1; guint restrict_to_fill_level : 1; guint grab_button : 8; /* 0 if none */ }; enum { PROP_0, PROP_ORIENTATION, PROP_ADJUSTMENT, PROP_INVERTED, PROP_LOWER_STEPPER_SENSITIVITY, PROP_UPPER_STEPPER_SENSITIVITY, PROP_SHOW_FILL_LEVEL, PROP_RESTRICT_TO_FILL_LEVEL, PROP_FILL_LEVEL, PROP_ROUND_DIGITS }; enum { VALUE_CHANGED, ADJUST_BOUNDS, MOVE_SLIDER, CHANGE_VALUE, LAST_SIGNAL }; typedef enum { STEPPER_A, STEPPER_B, STEPPER_C, STEPPER_D } Stepper; static void gtk_range_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_range_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_range_destroy (GtkWidget *widget); static void gtk_range_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_range_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_range_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_range_hierarchy_changed (GtkWidget *widget, GtkWidget *previous_toplevel); static void gtk_range_realize (GtkWidget *widget); static void gtk_range_unrealize (GtkWidget *widget); static void gtk_range_map (GtkWidget *widget); static void gtk_range_unmap (GtkWidget *widget); static gboolean gtk_range_draw (GtkWidget *widget, cairo_t *cr); static gboolean gtk_range_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_range_button_release (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_range_motion_notify (GtkWidget *widget, GdkEventMotion *event); static gboolean gtk_range_enter_notify (GtkWidget *widget, GdkEventCrossing *event); static gboolean gtk_range_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static gboolean gtk_range_grab_broken (GtkWidget *widget, GdkEventGrabBroken *event); static void gtk_range_grab_notify (GtkWidget *widget, gboolean was_grabbed); static void gtk_range_state_flags_changed (GtkWidget *widget, GtkStateFlags previous_state); static gboolean gtk_range_scroll_event (GtkWidget *widget, GdkEventScroll *event); static void gtk_range_style_updated (GtkWidget *widget); static void update_slider_position (GtkRange *range, gint mouse_x, gint mouse_y); static void stop_scrolling (GtkRange *range); static gboolean modify_allocation_for_window_grip (GtkWidget *widget, GtkAllocation *allocation); /* Range methods */ static void gtk_range_move_slider (GtkRange *range, GtkScrollType scroll); /* Internals */ static gboolean gtk_range_scroll (GtkRange *range, GtkScrollType scroll); static gboolean gtk_range_update_mouse_location (GtkRange *range); static void gtk_range_calc_layout (GtkRange *range, gdouble adjustment_value); static void gtk_range_calc_marks (GtkRange *range); static void gtk_range_get_props (GtkRange *range, gint *slider_width, gint *stepper_size, gint *focus_width, gint *trough_border, gint *stepper_spacing, gboolean *trough_under_steppers, gint *arrow_displacement_x, gint *arrow_displacement_y); static void gtk_range_calc_request (GtkRange *range, gint slider_width, gint stepper_size, gint focus_width, gint trough_border, gint stepper_spacing, GdkRectangle *range_rect, GtkBorder *border, gint *n_steppers_p, gboolean *has_steppers_ab, gboolean *has_steppers_cd, gint *slider_length_p); static void gtk_range_adjustment_value_changed (GtkAdjustment *adjustment, gpointer data); static void gtk_range_adjustment_changed (GtkAdjustment *adjustment, gpointer data); static void gtk_range_add_step_timer (GtkRange *range, GtkScrollType step); static void gtk_range_remove_step_timer (GtkRange *range); static GdkRectangle* get_area (GtkRange *range, MouseLocation location); static gboolean gtk_range_real_change_value (GtkRange *range, GtkScrollType scroll, gdouble value); static gboolean gtk_range_key_press (GtkWidget *range, GdkEventKey *event); G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GtkRange, gtk_range, GTK_TYPE_WIDGET, G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL)) static guint signals[LAST_SIGNAL]; static void gtk_range_class_init (GtkRangeClass *class) { GObjectClass *gobject_class; GtkWidgetClass *widget_class; gobject_class = G_OBJECT_CLASS (class); widget_class = (GtkWidgetClass*) class; gobject_class->set_property = gtk_range_set_property; gobject_class->get_property = gtk_range_get_property; widget_class->destroy = gtk_range_destroy; widget_class->get_preferred_width = gtk_range_get_preferred_width; widget_class->get_preferred_height = gtk_range_get_preferred_height; widget_class->size_allocate = gtk_range_size_allocate; widget_class->hierarchy_changed = gtk_range_hierarchy_changed; widget_class->realize = gtk_range_realize; widget_class->unrealize = gtk_range_unrealize; widget_class->map = gtk_range_map; widget_class->unmap = gtk_range_unmap; widget_class->draw = gtk_range_draw; widget_class->button_press_event = gtk_range_button_press; widget_class->button_release_event = gtk_range_button_release; widget_class->motion_notify_event = gtk_range_motion_notify; widget_class->scroll_event = gtk_range_scroll_event; widget_class->enter_notify_event = gtk_range_enter_notify; widget_class->leave_notify_event = gtk_range_leave_notify; widget_class->grab_broken_event = gtk_range_grab_broken; widget_class->grab_notify = gtk_range_grab_notify; widget_class->state_flags_changed = gtk_range_state_flags_changed; widget_class->style_updated = gtk_range_style_updated; widget_class->key_press_event = gtk_range_key_press; class->move_slider = gtk_range_move_slider; class->change_value = gtk_range_real_change_value; class->slider_detail = "slider"; class->stepper_detail = "stepper"; /** * GtkRange::value-changed: * @range: the #GtkRange that received the signal * * Emitted when the range value changes. */ signals[VALUE_CHANGED] = g_signal_new (I_("value-changed"), G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkRangeClass, value_changed), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GtkRange::adjust-bounds: * @range: the #GtkRange that received the signal * @value: the value before we clamp * * Emitted before clamping a value, to give the application a * chance to adjust the bounds. */ signals[ADJUST_BOUNDS] = g_signal_new (I_("adjust-bounds"), G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkRangeClass, adjust_bounds), NULL, NULL, _gtk_marshal_VOID__DOUBLE, G_TYPE_NONE, 1, G_TYPE_DOUBLE); /** * GtkRange::move-slider: * @range: the #GtkRange that received the signal * @step: how to move the slider * * Virtual function that moves the slider. Used for keybindings. */ signals[MOVE_SLIDER] = g_signal_new (I_("move-slider"), G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkRangeClass, move_slider), NULL, NULL, _gtk_marshal_VOID__ENUM, G_TYPE_NONE, 1, GTK_TYPE_SCROLL_TYPE); /** * GtkRange::change-value: * @range: the #GtkRange that received the signal * @scroll: the type of scroll action that was performed * @value: the new value resulting from the scroll action * * The #GtkRange::change-value signal is emitted when a scroll action is * performed on a range. It allows an application to determine the * type of scroll event that occurred and the resultant new value. * The application can handle the event itself and return %TRUE to * prevent further processing. Or, by returning %FALSE, it can pass * the event to other handlers until the default GTK+ handler is * reached. * * The value parameter is unrounded. An application that overrides * the GtkRange::change-value signal is responsible for clamping the * value to the desired number of decimal digits; the default GTK+ * handler clamps the value based on #GtkRange:round-digits. * * It is not possible to use delayed update policies in an overridden * #GtkRange::change-value handler. * * Returns: %TRUE to prevent other handlers from being invoked for * the signal, %FALSE to propagate the signal further * * Since: 2.6 */ signals[CHANGE_VALUE] = g_signal_new (I_("change-value"), G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkRangeClass, change_value), _gtk_boolean_handled_accumulator, NULL, _gtk_marshal_BOOLEAN__ENUM_DOUBLE, G_TYPE_BOOLEAN, 2, GTK_TYPE_SCROLL_TYPE, G_TYPE_DOUBLE); g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation"); g_object_class_install_property (gobject_class, PROP_ADJUSTMENT, g_param_spec_object ("adjustment", P_("Adjustment"), P_("The GtkAdjustment that contains the current value of this range object"), GTK_TYPE_ADJUSTMENT, GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_INVERTED, g_param_spec_boolean ("inverted", P_("Inverted"), P_("Invert direction slider moves to increase range value"), FALSE, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_LOWER_STEPPER_SENSITIVITY, g_param_spec_enum ("lower-stepper-sensitivity", P_("Lower stepper sensitivity"), P_("The sensitivity policy for the stepper that points to the adjustment's lower side"), GTK_TYPE_SENSITIVITY_TYPE, GTK_SENSITIVITY_AUTO, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_UPPER_STEPPER_SENSITIVITY, g_param_spec_enum ("upper-stepper-sensitivity", P_("Upper stepper sensitivity"), P_("The sensitivity policy for the stepper that points to the adjustment's upper side"), GTK_TYPE_SENSITIVITY_TYPE, GTK_SENSITIVITY_AUTO, GTK_PARAM_READWRITE)); /** * GtkRange:show-fill-level: * * The show-fill-level property controls whether fill level indicator * graphics are displayed on the trough. See * gtk_range_set_show_fill_level(). * * Since: 2.12 **/ g_object_class_install_property (gobject_class, PROP_SHOW_FILL_LEVEL, g_param_spec_boolean ("show-fill-level", P_("Show Fill Level"), P_("Whether to display a fill level indicator graphics on trough."), FALSE, GTK_PARAM_READWRITE)); /** * GtkRange:restrict-to-fill-level: * * The restrict-to-fill-level property controls whether slider * movement is restricted to an upper boundary set by the * fill level. See gtk_range_set_restrict_to_fill_level(). * * Since: 2.12 **/ g_object_class_install_property (gobject_class, PROP_RESTRICT_TO_FILL_LEVEL, g_param_spec_boolean ("restrict-to-fill-level", P_("Restrict to Fill Level"), P_("Whether to restrict the upper boundary to the fill level."), TRUE, GTK_PARAM_READWRITE)); /** * GtkRange:fill-level: * * The fill level (e.g. prebuffering of a network stream). * See gtk_range_set_fill_level(). * * Since: 2.12 **/ g_object_class_install_property (gobject_class, PROP_FILL_LEVEL, g_param_spec_double ("fill-level", P_("Fill Level"), P_("The fill level."), -G_MAXDOUBLE, G_MAXDOUBLE, G_MAXDOUBLE, GTK_PARAM_READWRITE)); /** * GtkRange:round-digits: * * The number of digits to round the value to when * it changes, or -1. See #GtkRange::change-value. * * Since: 2.24 */ g_object_class_install_property (gobject_class, PROP_ROUND_DIGITS, g_param_spec_int ("round-digits", P_("Round Digits"), P_("The number of digits to round the value to."), -1, G_MAXINT, -1, GTK_PARAM_READWRITE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("slider-width", P_("Slider Width"), P_("Width of scrollbar or scale thumb"), 0, G_MAXINT, 14, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("trough-border", P_("Trough Border"), P_("Spacing between thumb/steppers and outer trough bevel"), 0, G_MAXINT, 1, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("stepper-size", P_("Stepper Size"), P_("Length of step buttons at ends"), 0, G_MAXINT, 14, GTK_PARAM_READABLE)); /** * GtkRange:stepper-spacing: * * The spacing between the stepper buttons and thumb. Note that * stepper-spacing won't have any effect if there are no steppers. */ gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("stepper-spacing", P_("Stepper Spacing"), P_("Spacing between step buttons and thumb"), 0, G_MAXINT, 0, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("arrow-displacement-x", P_("Arrow X Displacement"), P_("How far in the x direction to move the arrow when the button is depressed"), G_MININT, G_MAXINT, 0, GTK_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("arrow-displacement-y", P_("Arrow Y Displacement"), P_("How far in the y direction to move the arrow when the button is depressed"), G_MININT, G_MAXINT, 0, GTK_PARAM_READABLE)); /** * GtkRange:trough-under-steppers: * * Whether to draw the trough across the full length of the range or * to exclude the steppers and their spacing. * * Since: 2.10 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_boolean ("trough-under-steppers", P_("Trough Under Steppers"), P_("Whether to draw trough for full length of range or exclude the steppers and spacing"), TRUE, GTK_PARAM_READABLE)); /** * GtkRange:arrow-scaling: * * The arrow size proportion relative to the scroll button size. * * Since: 2.14 */ gtk_widget_class_install_style_property (widget_class, g_param_spec_float ("arrow-scaling", P_("Arrow scaling"), P_("Arrow scaling with regard to scroll button size"), 0.0, 1.0, 0.5, GTK_PARAM_READABLE)); g_type_class_add_private (class, sizeof (GtkRangePrivate)); gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_RANGE_ACCESSIBLE); } static void gtk_range_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkRange *range = GTK_RANGE (object); GtkRangePrivate *priv = range->priv; switch (prop_id) { case PROP_ORIENTATION: priv->orientation = g_value_get_enum (value); priv->slider_detail_quark = 0; priv->stepper_detail_quark[0] = 0; priv->stepper_detail_quark[1] = 0; priv->stepper_detail_quark[2] = 0; priv->stepper_detail_quark[3] = 0; _gtk_orientable_set_style_classes (GTK_ORIENTABLE (range)); gtk_widget_queue_resize (GTK_WIDGET (range)); break; case PROP_ADJUSTMENT: gtk_range_set_adjustment (range, g_value_get_object (value)); break; case PROP_INVERTED: gtk_range_set_inverted (range, g_value_get_boolean (value)); break; case PROP_LOWER_STEPPER_SENSITIVITY: gtk_range_set_lower_stepper_sensitivity (range, g_value_get_enum (value)); break; case PROP_UPPER_STEPPER_SENSITIVITY: gtk_range_set_upper_stepper_sensitivity (range, g_value_get_enum (value)); break; case PROP_SHOW_FILL_LEVEL: gtk_range_set_show_fill_level (range, g_value_get_boolean (value)); break; case PROP_RESTRICT_TO_FILL_LEVEL: gtk_range_set_restrict_to_fill_level (range, g_value_get_boolean (value)); break; case PROP_FILL_LEVEL: gtk_range_set_fill_level (range, g_value_get_double (value)); break; case PROP_ROUND_DIGITS: gtk_range_set_round_digits (range, g_value_get_int (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_range_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkRange *range = GTK_RANGE (object); GtkRangePrivate *priv = range->priv; switch (prop_id) { case PROP_ORIENTATION: g_value_set_enum (value, priv->orientation); break; case PROP_ADJUSTMENT: g_value_set_object (value, priv->adjustment); break; case PROP_INVERTED: g_value_set_boolean (value, priv->inverted); break; case PROP_LOWER_STEPPER_SENSITIVITY: g_value_set_enum (value, gtk_range_get_lower_stepper_sensitivity (range)); break; case PROP_UPPER_STEPPER_SENSITIVITY: g_value_set_enum (value, gtk_range_get_upper_stepper_sensitivity (range)); break; case PROP_SHOW_FILL_LEVEL: g_value_set_boolean (value, gtk_range_get_show_fill_level (range)); break; case PROP_RESTRICT_TO_FILL_LEVEL: g_value_set_boolean (value, gtk_range_get_restrict_to_fill_level (range)); break; case PROP_FILL_LEVEL: g_value_set_double (value, gtk_range_get_fill_level (range)); break; case PROP_ROUND_DIGITS: g_value_set_int (value, gtk_range_get_round_digits (range)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_range_init (GtkRange *range) { GtkRangePrivate *priv; range->priv = G_TYPE_INSTANCE_GET_PRIVATE (range, GTK_TYPE_RANGE, GtkRangePrivate); priv = range->priv; gtk_widget_set_has_window (GTK_WIDGET (range), FALSE); priv->orientation = GTK_ORIENTATION_HORIZONTAL; priv->adjustment = NULL; priv->inverted = FALSE; priv->flippable = FALSE; priv->min_slider_size = 1; priv->has_stepper_a = FALSE; priv->has_stepper_b = FALSE; priv->has_stepper_c = FALSE; priv->has_stepper_d = FALSE; priv->need_recalc = TRUE; priv->round_digits = -1; priv->mouse_location = MOUSE_OUTSIDE; priv->mouse_x = -1; priv->mouse_y = -1; priv->grab_location = MOUSE_OUTSIDE; priv->grab_button = 0; priv->lower_sensitivity = GTK_SENSITIVITY_AUTO; priv->upper_sensitivity = GTK_SENSITIVITY_AUTO; priv->lower_sensitive = TRUE; priv->upper_sensitive = TRUE; priv->has_origin = FALSE; priv->show_fill_level = FALSE; priv->restrict_to_fill_level = TRUE; priv->fill_level = G_MAXDOUBLE; priv->timer = NULL; } /** * gtk_range_get_adjustment: * @range: a #GtkRange * * Get the #GtkAdjustment which is the "model" object for #GtkRange. * See gtk_range_set_adjustment() for details. * The return value does not have a reference added, so should not * be unreferenced. * * Return value: (transfer none): a #GtkAdjustment **/ GtkAdjustment* gtk_range_get_adjustment (GtkRange *range) { GtkRangePrivate *priv; g_return_val_if_fail (GTK_IS_RANGE (range), NULL); priv = range->priv; if (!priv->adjustment) gtk_range_set_adjustment (range, NULL); return priv->adjustment; } /** * gtk_range_set_adjustment: * @range: a #GtkRange * @adjustment: a #GtkAdjustment * * Sets the adjustment to be used as the "model" object for this range * widget. The adjustment indicates the current range value, the * minimum and maximum range values, the step/page increments used * for keybindings and scrolling, and the page size. The page size * is normally 0 for #GtkScale and nonzero for #GtkScrollbar, and * indicates the size of the visible area of the widget being scrolled. * The page size affects the size of the scrollbar slider. **/ void gtk_range_set_adjustment (GtkRange *range, GtkAdjustment *adjustment) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (!adjustment) adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0); else g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment)); if (priv->adjustment != adjustment) { if (priv->adjustment) { g_signal_handlers_disconnect_by_func (priv->adjustment, gtk_range_adjustment_changed, range); g_signal_handlers_disconnect_by_func (priv->adjustment, gtk_range_adjustment_value_changed, range); g_object_unref (priv->adjustment); } priv->adjustment = adjustment; g_object_ref_sink (adjustment); g_signal_connect (adjustment, "changed", G_CALLBACK (gtk_range_adjustment_changed), range); g_signal_connect (adjustment, "value-changed", G_CALLBACK (gtk_range_adjustment_value_changed), range); gtk_range_adjustment_changed (adjustment, range); g_object_notify (G_OBJECT (range), "adjustment"); } } /** * gtk_range_set_inverted: * @range: a #GtkRange * @setting: %TRUE to invert the range * * Ranges normally move from lower to higher values as the * slider moves from top to bottom or left to right. Inverted * ranges have higher values at the top or on the right rather than * on the bottom or left. **/ void gtk_range_set_inverted (GtkRange *range, gboolean setting) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; setting = setting != FALSE; if (setting != priv->inverted) { priv->inverted = setting; g_object_notify (G_OBJECT (range), "inverted"); gtk_widget_queue_resize (GTK_WIDGET (range)); } } /** * gtk_range_get_inverted: * @range: a #GtkRange * * Gets the value set by gtk_range_set_inverted(). * * Return value: %TRUE if the range is inverted **/ gboolean gtk_range_get_inverted (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->inverted; } /** * gtk_range_set_flippable: * @range: a #GtkRange * @flippable: %TRUE to make the range flippable * * If a range is flippable, it will switch its direction if it is * horizontal and its direction is %GTK_TEXT_DIR_RTL. * * See gtk_widget_get_direction(). * * Since: 2.18 **/ void gtk_range_set_flippable (GtkRange *range, gboolean flippable) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; flippable = flippable ? TRUE : FALSE; if (flippable != priv->flippable) { priv->flippable = flippable; gtk_widget_queue_draw (GTK_WIDGET (range)); } } /** * gtk_range_get_flippable: * @range: a #GtkRange * * Gets the value set by gtk_range_set_flippable(). * * Return value: %TRUE if the range is flippable * * Since: 2.18 **/ gboolean gtk_range_get_flippable (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->flippable; } /** * gtk_range_set_slider_size_fixed: * @range: a #GtkRange * @size_fixed: %TRUE to make the slider size constant * * Sets whether the range's slider has a fixed size, or a size that * depends on its adjustment's page size. * * This function is useful mainly for #GtkRange subclasses. * * Since: 2.20 **/ void gtk_range_set_slider_size_fixed (GtkRange *range, gboolean size_fixed) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (size_fixed != priv->slider_size_fixed) { priv->slider_size_fixed = size_fixed ? TRUE : FALSE; if (priv->adjustment && gtk_widget_get_mapped (GTK_WIDGET (range))) { priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); gtk_widget_queue_draw (GTK_WIDGET (range)); } } } /** * gtk_range_get_slider_size_fixed: * @range: a #GtkRange * * This function is useful mainly for #GtkRange subclasses. * * See gtk_range_set_slider_size_fixed(). * * Return value: whether the range's slider has a fixed size. * * Since: 2.20 **/ gboolean gtk_range_get_slider_size_fixed (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->slider_size_fixed; } /** * gtk_range_set_min_slider_size: * @range: a #GtkRange * @min_size: The slider's minimum size * * Sets the minimum size of the range's slider. * * This function is useful mainly for #GtkRange subclasses. * * Since: 2.20 **/ void gtk_range_set_min_slider_size (GtkRange *range, gint min_size) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); g_return_if_fail (min_size > 0); priv = range->priv; if (min_size != priv->min_slider_size) { priv->min_slider_size = min_size; if (gtk_widget_is_drawable (GTK_WIDGET (range))) { priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); gtk_widget_queue_draw (GTK_WIDGET (range)); } } } /** * gtk_range_get_min_slider_size: * @range: a #GtkRange * * This function is useful mainly for #GtkRange subclasses. * * See gtk_range_set_min_slider_size(). * * Return value: The minimum size of the range's slider. * * Since: 2.20 **/ gint gtk_range_get_min_slider_size (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->min_slider_size; } /** * gtk_range_get_range_rect: * @range: a #GtkRange * @range_rect: (out): return location for the range rectangle * * This function returns the area that contains the range's trough * and its steppers, in widget->window coordinates. * * This function is useful mainly for #GtkRange subclasses. * * Since: 2.20 **/ void gtk_range_get_range_rect (GtkRange *range, GdkRectangle *range_rect) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); g_return_if_fail (range_rect != NULL); priv = range->priv; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); *range_rect = priv->range_rect; } /** * gtk_range_get_slider_range: * @range: a #GtkRange * @slider_start: (out) (allow-none): return location for the slider's * start, or %NULL * @slider_end: (out) (allow-none): return location for the slider's * end, or %NULL * * This function returns sliders range along the long dimension, * in widget->window coordinates. * * This function is useful mainly for #GtkRange subclasses. * * Since: 2.20 **/ void gtk_range_get_slider_range (GtkRange *range, gint *slider_start, gint *slider_end) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); if (slider_start) *slider_start = priv->slider_start; if (slider_end) *slider_end = priv->slider_end; } /** * gtk_range_set_lower_stepper_sensitivity: * @range: a #GtkRange * @sensitivity: the lower stepper's sensitivity policy. * * Sets the sensitivity policy for the stepper that points to the * 'lower' end of the GtkRange's adjustment. * * Since: 2.10 **/ void gtk_range_set_lower_stepper_sensitivity (GtkRange *range, GtkSensitivityType sensitivity) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (priv->lower_sensitivity != sensitivity) { priv->lower_sensitivity = sensitivity; priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); gtk_widget_queue_draw (GTK_WIDGET (range)); g_object_notify (G_OBJECT (range), "lower-stepper-sensitivity"); } } /** * gtk_range_get_lower_stepper_sensitivity: * @range: a #GtkRange * * Gets the sensitivity policy for the stepper that points to the * 'lower' end of the GtkRange's adjustment. * * Return value: The lower stepper's sensitivity policy. * * Since: 2.10 **/ GtkSensitivityType gtk_range_get_lower_stepper_sensitivity (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO); return range->priv->lower_sensitivity; } /** * gtk_range_set_upper_stepper_sensitivity: * @range: a #GtkRange * @sensitivity: the upper stepper's sensitivity policy. * * Sets the sensitivity policy for the stepper that points to the * 'upper' end of the GtkRange's adjustment. * * Since: 2.10 **/ void gtk_range_set_upper_stepper_sensitivity (GtkRange *range, GtkSensitivityType sensitivity) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (priv->upper_sensitivity != sensitivity) { priv->upper_sensitivity = sensitivity; priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); gtk_widget_queue_draw (GTK_WIDGET (range)); g_object_notify (G_OBJECT (range), "upper-stepper-sensitivity"); } } /** * gtk_range_get_upper_stepper_sensitivity: * @range: a #GtkRange * * Gets the sensitivity policy for the stepper that points to the * 'upper' end of the GtkRange's adjustment. * * Return value: The upper stepper's sensitivity policy. * * Since: 2.10 **/ GtkSensitivityType gtk_range_get_upper_stepper_sensitivity (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), GTK_SENSITIVITY_AUTO); return range->priv->upper_sensitivity; } /** * gtk_range_set_increments: * @range: a #GtkRange * @step: step size * @page: page size * * Sets the step and page sizes for the range. * The step size is used when the user clicks the #GtkScrollbar * arrows or moves #GtkScale via arrow keys. The page size * is used for example when moving via Page Up or Page Down keys. **/ void gtk_range_set_increments (GtkRange *range, gdouble step, gdouble page) { GtkAdjustment *adjustment; g_return_if_fail (GTK_IS_RANGE (range)); adjustment = range->priv->adjustment; gtk_adjustment_configure (adjustment, gtk_adjustment_get_value (adjustment), gtk_adjustment_get_lower (adjustment), gtk_adjustment_get_upper (adjustment), step, page, gtk_adjustment_get_page_size (adjustment)); } /** * gtk_range_set_range: * @range: a #GtkRange * @min: minimum range value * @max: maximum range value * * Sets the allowable values in the #GtkRange, and clamps the range * value to be between @min and @max. (If the range has a non-zero * page size, it is clamped between @min and @max - page-size.) **/ void gtk_range_set_range (GtkRange *range, gdouble min, gdouble max) { GtkRangePrivate *priv; GtkAdjustment *adjustment; gdouble value; g_return_if_fail (GTK_IS_RANGE (range)); g_return_if_fail (min <= max); priv = range->priv; adjustment = priv->adjustment; value = gtk_adjustment_get_value (adjustment); if (priv->restrict_to_fill_level) value = MIN (value, MAX (gtk_adjustment_get_lower (adjustment), priv->fill_level)); gtk_adjustment_configure (adjustment, value, min, max, gtk_adjustment_get_step_increment (adjustment), gtk_adjustment_get_page_increment (adjustment), gtk_adjustment_get_page_size (adjustment)); } /** * gtk_range_set_value: * @range: a #GtkRange * @value: new value of the range * * Sets the current value of the range; if the value is outside the * minimum or maximum range values, it will be clamped to fit inside * them. The range emits the #GtkRange::value-changed signal if the * value changes. **/ void gtk_range_set_value (GtkRange *range, gdouble value) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (priv->restrict_to_fill_level) value = MIN (value, MAX (gtk_adjustment_get_lower (priv->adjustment), priv->fill_level)); gtk_adjustment_set_value (priv->adjustment, value); } /** * gtk_range_get_value: * @range: a #GtkRange * * Gets the current value of the range. * * Return value: current value of the range. **/ gdouble gtk_range_get_value (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), 0.0); return gtk_adjustment_get_value (range->priv->adjustment); } /** * gtk_range_set_show_fill_level: * @range: A #GtkRange * @show_fill_level: Whether a fill level indicator graphics is shown. * * Sets whether a graphical fill level is show on the trough. See * gtk_range_set_fill_level() for a general description of the fill * level concept. * * Since: 2.12 **/ void gtk_range_set_show_fill_level (GtkRange *range, gboolean show_fill_level) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; show_fill_level = show_fill_level ? TRUE : FALSE; if (show_fill_level != priv->show_fill_level) { priv->show_fill_level = show_fill_level; g_object_notify (G_OBJECT (range), "show-fill-level"); gtk_widget_queue_draw (GTK_WIDGET (range)); } } /** * gtk_range_get_show_fill_level: * @range: A #GtkRange * * Gets whether the range displays the fill level graphically. * * Return value: %TRUE if @range shows the fill level. * * Since: 2.12 **/ gboolean gtk_range_get_show_fill_level (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->show_fill_level; } /** * gtk_range_set_restrict_to_fill_level: * @range: A #GtkRange * @restrict_to_fill_level: Whether the fill level restricts slider movement. * * Sets whether the slider is restricted to the fill level. See * gtk_range_set_fill_level() for a general description of the fill * level concept. * * Since: 2.12 **/ void gtk_range_set_restrict_to_fill_level (GtkRange *range, gboolean restrict_to_fill_level) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; restrict_to_fill_level = restrict_to_fill_level ? TRUE : FALSE; if (restrict_to_fill_level != priv->restrict_to_fill_level) { priv->restrict_to_fill_level = restrict_to_fill_level; g_object_notify (G_OBJECT (range), "restrict-to-fill-level"); gtk_range_set_value (range, gtk_range_get_value (range)); } } /** * gtk_range_get_restrict_to_fill_level: * @range: A #GtkRange * * Gets whether the range is restricted to the fill level. * * Return value: %TRUE if @range is restricted to the fill level. * * Since: 2.12 **/ gboolean gtk_range_get_restrict_to_fill_level (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), FALSE); return range->priv->restrict_to_fill_level; } /** * gtk_range_set_fill_level: * @range: a #GtkRange * @fill_level: the new position of the fill level indicator * * Set the new position of the fill level indicator. * * The "fill level" is probably best described by its most prominent * use case, which is an indicator for the amount of pre-buffering in * a streaming media player. In that use case, the value of the range * would indicate the current play position, and the fill level would * be the position up to which the file/stream has been downloaded. * * This amount of prebuffering can be displayed on the range's trough * and is themeable separately from the trough. To enable fill level * display, use gtk_range_set_show_fill_level(). The range defaults * to not showing the fill level. * * Additionally, it's possible to restrict the range's slider position * to values which are smaller than the fill level. This is controller * by gtk_range_set_restrict_to_fill_level() and is by default * enabled. * * Since: 2.12 **/ void gtk_range_set_fill_level (GtkRange *range, gdouble fill_level) { GtkRangePrivate *priv; g_return_if_fail (GTK_IS_RANGE (range)); priv = range->priv; if (fill_level != priv->fill_level) { priv->fill_level = fill_level; g_object_notify (G_OBJECT (range), "fill-level"); if (priv->show_fill_level) gtk_widget_queue_draw (GTK_WIDGET (range)); if (priv->restrict_to_fill_level) gtk_range_set_value (range, gtk_range_get_value (range)); } } /** * gtk_range_get_fill_level: * @range: A #GtkRange * * Gets the current position of the fill level indicator. * * Return value: The current fill level * * Since: 2.12 **/ gdouble gtk_range_get_fill_level (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), 0.0); return range->priv->fill_level; } static gboolean should_invert (GtkRange *range) { GtkRangePrivate *priv = range->priv; if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) return (priv->inverted && !priv->flippable) || (priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_LTR) || (!priv->inverted && priv->flippable && gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_RTL); else return priv->inverted; } static void gtk_range_destroy (GtkWidget *widget) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; gtk_range_remove_step_timer (range); if (priv->adjustment) { g_signal_handlers_disconnect_by_func (priv->adjustment, gtk_range_adjustment_changed, range); g_signal_handlers_disconnect_by_func (priv->adjustment, gtk_range_adjustment_value_changed, range); g_object_unref (priv->adjustment); priv->adjustment = NULL; } if (priv->n_marks) { g_free (priv->marks); priv->marks = NULL; g_free (priv->mark_pos); priv->mark_pos = NULL; priv->n_marks = 0; } GTK_WIDGET_CLASS (gtk_range_parent_class)->destroy (widget); } static void gtk_range_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural) { GtkRange *range; gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing; GdkRectangle range_rect; GtkBorder border; range = GTK_RANGE (widget); gtk_range_get_props (range, &slider_width, &stepper_size, &focus_width, &trough_border, &stepper_spacing, NULL, NULL, NULL); gtk_range_calc_request (range, slider_width, stepper_size, focus_width, trough_border, stepper_spacing, &range_rect, &border, NULL, NULL, NULL, NULL); *minimum = *natural = range_rect.width + border.left + border.right; } static void gtk_range_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural) { GtkRange *range; gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing; GdkRectangle range_rect; GtkBorder border; range = GTK_RANGE (widget); gtk_range_get_props (range, &slider_width, &stepper_size, &focus_width, &trough_border, &stepper_spacing, NULL, NULL, NULL); gtk_range_calc_request (range, slider_width, stepper_size, focus_width, trough_border, stepper_spacing, &range_rect, &border, NULL, NULL, NULL, NULL); *minimum = *natural = range_rect.height + border.top + border.bottom; } static gboolean modify_allocation_for_window_grip (GtkWidget *widget, GtkAllocation *allocation) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GtkWidget *window, *parent; GdkRectangle grip_rect; GdkRectangle translated_rect; gint x; gint y; window = gtk_widget_get_toplevel (widget); if (!GTK_IS_WINDOW (window)) return FALSE; if (!gtk_window_resize_grip_is_visible (GTK_WINDOW (window))) return FALSE; /* Get the area of the window's corner grip */ gtk_window_get_resize_grip_area (GTK_WINDOW (window), &grip_rect); x = 0; y = 0; /* Translate the stepper's area into window coords. * This is slightly tricky. We can't just use * gtk_widget_translate_coordinates (widget, window, 0, 0, &x, &y) * since that translates wrt to the _current_ allocation * and will lead to alternating between overlap and nonoverlap * for successive allocations. * Therefore, we find the window-widget to whose window allocation * is relative, and translate from there upwards. */ parent = widget; while (gtk_widget_get_window (parent) == gtk_widget_get_window (widget) && parent != window) { parent = gtk_widget_get_parent (parent); } if (parent == window) translated_rect = *allocation; else { gtk_widget_translate_coordinates (parent, window, allocation->x, allocation->y, &x, &y); translated_rect.x = x; translated_rect.y = y; translated_rect.width = allocation->width; translated_rect.height = allocation->height; } /* If the stepper button intersects the window resize grip.. */ if (gdk_rectangle_intersect (&grip_rect, &translated_rect, &grip_rect)) { if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { allocation->width -= grip_rect.width; if (gtk_widget_get_direction (window) == GTK_TEXT_DIR_RTL) allocation->x += grip_rect.width; } else { allocation->height -= grip_rect.height; } return TRUE; } return FALSE; } static void gtk_range_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; modify_allocation_for_window_grip (widget, allocation); gtk_widget_set_allocation (widget, allocation); priv->recalc_marks = TRUE; priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); if (gtk_widget_get_realized (widget)) gdk_window_move_resize (priv->event_window, allocation->x, allocation->y, allocation->width, allocation->height); } static void resize_grip_visible_changed (GObject *object, GParamSpec *pspec, gpointer user_data) { gtk_widget_queue_resize (GTK_WIDGET (user_data)); } static void gtk_range_hierarchy_changed (GtkWidget *widget, GtkWidget *previous_toplevel) { GtkWidget *window; if (previous_toplevel) g_signal_handlers_disconnect_by_func (previous_toplevel, G_CALLBACK (resize_grip_visible_changed), widget); window = gtk_widget_get_toplevel (widget); if (gtk_widget_is_toplevel (window)) g_signal_connect (window, "notify::resize-grip-visible", G_CALLBACK (resize_grip_visible_changed), widget); } static void gtk_range_realize (GtkWidget *widget) { GtkAllocation allocation; GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GdkWindow *window; GdkWindowAttr attributes; gint attributes_mask; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); gtk_widget_set_realized (widget, TRUE); window = gtk_widget_get_parent_window (widget); gtk_widget_set_window (widget, window); g_object_ref (window); gtk_widget_get_allocation (widget, &allocation); if (modify_allocation_for_window_grip (widget, &allocation)) gtk_widget_set_allocation (widget, &allocation); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = allocation.x; attributes.y = allocation.y; attributes.width = allocation.width; attributes.height = allocation.height; attributes.wclass = GDK_INPUT_ONLY; attributes.event_mask = gtk_widget_get_events (widget); attributes.event_mask |= (GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y; priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (priv->event_window, range); } static void gtk_range_unrealize (GtkWidget *widget) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; gtk_range_remove_step_timer (range); gdk_window_set_user_data (priv->event_window, NULL); gdk_window_destroy (priv->event_window); priv->event_window = NULL; GTK_WIDGET_CLASS (gtk_range_parent_class)->unrealize (widget); } static void gtk_range_map (GtkWidget *widget) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; gdk_window_show (priv->event_window); GTK_WIDGET_CLASS (gtk_range_parent_class)->map (widget); } static void gtk_range_unmap (GtkWidget *widget) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; stop_scrolling (range); gdk_window_hide (priv->event_window); GTK_WIDGET_CLASS (gtk_range_parent_class)->unmap (widget); } static void _gtk_range_update_context_for_stepper (GtkRange *range, GtkStyleContext *context, Stepper stepper) { GtkRangePrivate *priv = range->priv; GtkJunctionSides sides = 0; gboolean vertical, is_rtl; vertical = (priv->orientation == GTK_ORIENTATION_VERTICAL); is_rtl = (gtk_widget_get_direction (GTK_WIDGET (range)) == GTK_TEXT_DIR_RTL); /* Take junction sides from what's been * previously set to the widget itself */ sides = gtk_style_context_get_junction_sides (context); if (vertical) sides &= ~(GTK_JUNCTION_TOP | GTK_JUNCTION_BOTTOM); else sides &= ~(GTK_JUNCTION_LEFT | GTK_JUNCTION_RIGHT); switch (stepper) { case STEPPER_A: if (vertical) sides |= GTK_JUNCTION_BOTTOM; else sides |= (is_rtl) ? GTK_JUNCTION_LEFT : GTK_JUNCTION_RIGHT; break; case STEPPER_B: if (priv->has_stepper_a) { if (vertical) sides |= GTK_JUNCTION_TOP; else sides |= (is_rtl) ? GTK_JUNCTION_RIGHT : GTK_JUNCTION_LEFT; } if (vertical) sides |= GTK_JUNCTION_BOTTOM; else sides |= (is_rtl) ? GTK_JUNCTION_LEFT : GTK_JUNCTION_RIGHT; break; case STEPPER_C: if (priv->has_stepper_d) { if (vertical) sides |= GTK_JUNCTION_BOTTOM; else sides |= (is_rtl) ? GTK_JUNCTION_LEFT : GTK_JUNCTION_RIGHT; } if (vertical) sides |= GTK_JUNCTION_TOP; else sides |= (is_rtl) ? GTK_JUNCTION_RIGHT : GTK_JUNCTION_LEFT; break; case STEPPER_D: if (vertical) sides |= GTK_JUNCTION_TOP; else sides |= (is_rtl) ? GTK_JUNCTION_RIGHT : GTK_JUNCTION_LEFT; break; } gtk_style_context_set_junction_sides (context, sides); } static void draw_stepper (GtkRange *range, Stepper stepper, cairo_t *cr, GtkArrowType arrow_type, gboolean clicked, gboolean prelighted, GtkStateFlags state) { GtkRangePrivate *priv = range->priv; GtkAllocation allocation; GtkStyleContext *context; GtkWidget *widget = GTK_WIDGET (range); gfloat arrow_scaling; GdkRectangle *rect; gdouble arrow_x; gdouble arrow_y; gdouble arrow_size, angle; gboolean arrow_sensitive; switch (stepper) { case STEPPER_A: rect = &priv->stepper_a; break; case STEPPER_B: rect = &priv->stepper_b; break; case STEPPER_C: rect = &priv->stepper_c; break; case STEPPER_D: rect = &priv->stepper_d; break; default: g_assert_not_reached (); }; arrow_sensitive = TRUE; gtk_widget_get_allocation (widget, &allocation); if ((!priv->inverted && (arrow_type == GTK_ARROW_DOWN || arrow_type == GTK_ARROW_RIGHT)) || (priv->inverted && (arrow_type == GTK_ARROW_UP || arrow_type == GTK_ARROW_LEFT))) { arrow_sensitive = priv->upper_sensitive; } else { arrow_sensitive = priv->lower_sensitive; } state &= ~(GTK_STATE_FLAG_ACTIVE | GTK_STATE_FLAG_PRELIGHT); if ((state & GTK_STATE_FLAG_INSENSITIVE) || !arrow_sensitive) { state |= GTK_STATE_FLAG_INSENSITIVE; } else { if (clicked) state |= GTK_STATE_FLAG_ACTIVE; if (prelighted) state |= GTK_STATE_FLAG_PRELIGHT; } context = gtk_widget_get_style_context (widget); gtk_style_context_save (context); /* don't set juction sides on scrollbar steppers */ if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_SCROLLBAR)) gtk_style_context_set_junction_sides (context, GTK_JUNCTION_NONE); else _gtk_range_update_context_for_stepper (range, context, stepper); gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON); gtk_style_context_set_state (context, state); switch (arrow_type) { case GTK_ARROW_RIGHT: gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT); break; case GTK_ARROW_DOWN: gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM); break; case GTK_ARROW_LEFT: gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT); break; case GTK_ARROW_UP: default: gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP); break; } gtk_render_background (context, cr, rect->x, rect->y, rect->width, rect->height); gtk_render_frame (context, cr, rect->x, rect->y, rect->width, rect->height); gtk_widget_style_get (widget, "arrow-scaling", &arrow_scaling, NULL); arrow_size = MIN (rect->width, rect->height) * arrow_scaling; arrow_x = rect->x + (rect->width - arrow_size) / 2; arrow_y = rect->y + (rect->height - arrow_size) / 2; if (clicked && arrow_sensitive) { gint arrow_displacement_x; gint arrow_displacement_y; gtk_range_get_props (GTK_RANGE (widget), NULL, NULL, NULL, NULL, NULL, NULL, &arrow_displacement_x, &arrow_displacement_y); arrow_x += arrow_displacement_x; arrow_y += arrow_displacement_y; } switch (arrow_type) { case GTK_ARROW_RIGHT: angle = G_PI / 2; break; case GTK_ARROW_DOWN: angle = G_PI; break; case GTK_ARROW_LEFT: angle = 3 * (G_PI / 2); break; case GTK_ARROW_UP: default: angle = 0; break; } gtk_render_arrow (context, cr, angle, arrow_x, arrow_y, arrow_size); gtk_style_context_restore (context); } static gboolean gtk_range_draw (GtkWidget *widget, cairo_t *cr) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GtkStateFlags widget_state; gint focus_line_width = 0; gint focus_padding = 0; gboolean draw_trough = TRUE; gboolean draw_slider = TRUE; GtkStyleContext *context; context = gtk_widget_get_style_context (widget); if (GTK_IS_SCALE (widget) && gtk_adjustment_get_upper (priv->adjustment) == gtk_adjustment_get_lower (priv->adjustment)) { draw_trough = TRUE; draw_slider = FALSE; } if (GTK_IS_COLOR_SCALE (widget)) { draw_trough = FALSE; draw_slider = TRUE; } if (gtk_widget_get_can_focus (GTK_WIDGET (range))) gtk_widget_style_get (GTK_WIDGET (range), "focus-line-width", &focus_line_width, "focus-padding", &focus_padding, NULL); gtk_range_calc_marks (range); gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); widget_state = gtk_widget_get_state_flags (widget); /* Just to be confusing, we draw the trough for the whole * range rectangle, not the trough rectangle (the trough * rectangle is just for hit detection) */ cairo_save (cr); gdk_cairo_rectangle (cr, &priv->range_rect); cairo_clip (cr); { gint x = (priv->range_rect.x + focus_line_width + focus_padding); gint y = (priv->range_rect.y + focus_line_width + focus_padding); gint width = (priv->range_rect.width - 2 * (focus_line_width + focus_padding)); gint height = (priv->range_rect.height - 2 * (focus_line_width + focus_padding)); gboolean trough_under_steppers; gint stepper_size; gint stepper_spacing; gtk_widget_style_get (GTK_WIDGET (range), "trough-under-steppers", &trough_under_steppers, "stepper-size", &stepper_size, "stepper-spacing", &stepper_spacing, NULL); if (!trough_under_steppers) { gint offset = 0; gint shorter = 0; if (priv->has_stepper_a) offset += stepper_size; if (priv->has_stepper_b) offset += stepper_size; shorter += offset; if (priv->has_stepper_c) shorter += stepper_size; if (priv->has_stepper_d) shorter += stepper_size; if (priv->has_stepper_a || priv->has_stepper_b) { offset += stepper_spacing; shorter += stepper_spacing; } if (priv->has_stepper_c || priv->has_stepper_d) { shorter += stepper_spacing; } if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { x += offset; width -= shorter; } else { y += offset; height -= shorter; } } gtk_style_context_save (context); gtk_style_context_add_class (context, GTK_STYLE_CLASS_TROUGH); if (draw_trough) { if (!priv->has_origin) { gtk_render_background (context, cr, x, y, width, height); gtk_render_frame (context, cr, x, y, width, height); } else { gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL; gint trough_change_pos_x = width; gint trough_change_pos_y = height; if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) trough_change_pos_x = (priv->slider.x + priv->slider.width / 2 - x); else trough_change_pos_y = (priv->slider.y + priv->slider.height / 2 - y); gtk_style_context_save (context); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { gtk_style_context_add_class (context, GTK_STYLE_CLASS_LEFT); if (!is_rtl) gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT); } else gtk_style_context_add_class (context, GTK_STYLE_CLASS_TOP); gtk_render_background (context, cr, x, y, trough_change_pos_x, trough_change_pos_y); gtk_render_frame (context, cr, x, y, trough_change_pos_x, trough_change_pos_y); gtk_style_context_restore (context); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) trough_change_pos_y = 0; else trough_change_pos_x = 0; gtk_style_context_save (context); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { gtk_style_context_add_class (context, GTK_STYLE_CLASS_RIGHT); if (is_rtl) gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT); } else { gtk_style_context_add_class (context, GTK_STYLE_CLASS_BOTTOM); gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT); } gtk_render_background (context, cr, x + trough_change_pos_x, y + trough_change_pos_y, width - trough_change_pos_x, height - trough_change_pos_y); gtk_render_frame (context, cr, x + trough_change_pos_x, y + trough_change_pos_y, width - trough_change_pos_x, height - trough_change_pos_y); gtk_style_context_restore (context); } } gtk_style_context_restore (context); if (priv->show_fill_level && gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) != 0) { gdouble fill_level = priv->fill_level; gint fill_x = x; gint fill_y = y; gint fill_width = width; gint fill_height = height; gtk_style_context_save (context); gtk_style_context_add_class (context, GTK_STYLE_CLASS_PROGRESSBAR); fill_level = CLAMP (fill_level, gtk_adjustment_get_lower (priv->adjustment), gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment)); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { fill_x = priv->trough.x; fill_width = (priv->slider.width + (fill_level - gtk_adjustment_get_lower (priv->adjustment)) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment)) * (priv->trough.width - priv->slider.width)); if (should_invert (range)) fill_x += priv->trough.width - fill_width; } else { fill_y = priv->trough.y; fill_height = (priv->slider.height + (fill_level - gtk_adjustment_get_lower (priv->adjustment)) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment)) * (priv->trough.height - priv->slider.height)); if (should_invert (range)) fill_y += priv->trough.height - fill_height; } #if 0 if (fill_level < gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment)) fill_detail = "trough-fill-level-full"; else fill_detail = "trough-fill-level"; #endif gtk_render_activity (context, cr, fill_x, fill_y, fill_width, fill_height); gtk_style_context_restore (context); } if (!(widget_state & GTK_STATE_FLAG_INSENSITIVE) && gtk_widget_has_visible_focus (widget)) { gtk_render_focus (context, cr, priv->range_rect.x, priv->range_rect.y, priv->range_rect.width, priv->range_rect.height); } } cairo_restore (cr); if (draw_slider) { GtkStateFlags state = widget_state; state &= ~(GTK_STATE_FLAG_PRELIGHT | GTK_STATE_FLAG_ACTIVE); if (priv->mouse_location == MOUSE_SLIDER && !(state & GTK_STATE_FLAG_INSENSITIVE)) state |= GTK_STATE_FLAG_PRELIGHT; if (priv->grab_location == MOUSE_SLIDER) state |= GTK_STATE_FLAG_ACTIVE; cairo_save (cr); gdk_cairo_rectangle (cr, &priv->slider); cairo_clip (cr); gtk_style_context_save (context); gtk_style_context_add_class (context, GTK_STYLE_CLASS_SLIDER); gtk_style_context_set_state (context, state); gtk_render_slider (context, cr, priv->slider.x, priv->slider.y, priv->slider.width, priv->slider.height, priv->orientation); gtk_style_context_restore (context); cairo_restore (cr); } if (priv->has_stepper_a) draw_stepper (range, STEPPER_A, cr, priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT, priv->grab_location == MOUSE_STEPPER_A, priv->mouse_location == MOUSE_STEPPER_A, widget_state); if (priv->has_stepper_b) draw_stepper (range, STEPPER_B, cr, priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT, priv->grab_location == MOUSE_STEPPER_B, priv->mouse_location == MOUSE_STEPPER_B, widget_state); if (priv->has_stepper_c) draw_stepper (range, STEPPER_C, cr, priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_UP : GTK_ARROW_LEFT, priv->grab_location == MOUSE_STEPPER_C, priv->mouse_location == MOUSE_STEPPER_C, widget_state); if (priv->has_stepper_d) draw_stepper (range, STEPPER_D, cr, priv->orientation == GTK_ORIENTATION_VERTICAL ? GTK_ARROW_DOWN : GTK_ARROW_RIGHT, priv->grab_location == MOUSE_STEPPER_D, priv->mouse_location == MOUSE_STEPPER_D, widget_state); return FALSE; } static void range_grab_add (GtkRange *range, GdkDevice *device, MouseLocation location, gint button) { GtkRangePrivate *priv = range->priv; if (device == priv->grab_device) return; /* Don't perform any GDK/GTK+ grab here. Since a button * is down, there's an ongoing implicit grab on * priv->event_window, which pretty much guarantees this * is the only widget receiving the pointer events. */ priv->grab_location = location; priv->grab_button = button; priv->grab_device = device; if (gtk_range_update_mouse_location (range)) gtk_widget_queue_draw (GTK_WIDGET (range)); } static void range_grab_remove (GtkRange *range) { GtkRangePrivate *priv = range->priv; MouseLocation location; if (priv->grab_device) { GdkDevice *grab_device = priv->grab_device; priv->grab_device = NULL; gtk_device_grab_remove (GTK_WIDGET (range), grab_device); } location = priv->grab_location; priv->grab_location = MOUSE_OUTSIDE; priv->grab_button = 0; if (gtk_range_update_mouse_location (range) || location != MOUSE_OUTSIDE) gtk_widget_queue_draw (GTK_WIDGET (range)); } static GtkScrollType range_get_scroll_for_grab (GtkRange *range) { GtkRangePrivate *priv = range->priv; gboolean invert; invert = should_invert (range); switch (priv->grab_location) { /* Backward stepper */ case MOUSE_STEPPER_A: case MOUSE_STEPPER_C: switch (priv->grab_button) { case GDK_BUTTON_PRIMARY: return invert ? GTK_SCROLL_STEP_FORWARD : GTK_SCROLL_STEP_BACKWARD; break; case GDK_BUTTON_MIDDLE: return invert ? GTK_SCROLL_PAGE_FORWARD : GTK_SCROLL_PAGE_BACKWARD; break; case GDK_BUTTON_SECONDARY: return invert ? GTK_SCROLL_END : GTK_SCROLL_START; break; } break; /* Forward stepper */ case MOUSE_STEPPER_B: case MOUSE_STEPPER_D: switch (priv->grab_button) { case GDK_BUTTON_PRIMARY: return invert ? GTK_SCROLL_STEP_BACKWARD : GTK_SCROLL_STEP_FORWARD; break; case GDK_BUTTON_MIDDLE: return invert ? GTK_SCROLL_PAGE_BACKWARD : GTK_SCROLL_PAGE_FORWARD; break; case GDK_BUTTON_SECONDARY: return invert ? GTK_SCROLL_START : GTK_SCROLL_END; break; } break; /* In the trough */ case MOUSE_TROUGH: { if (priv->trough_click_forward) return GTK_SCROLL_PAGE_FORWARD; else return GTK_SCROLL_PAGE_BACKWARD; } break; case MOUSE_OUTSIDE: case MOUSE_SLIDER: case MOUSE_WIDGET: break; } return GTK_SCROLL_NONE; } static gdouble coord_to_value (GtkRange *range, gint coord) { GtkRangePrivate *priv = range->priv; gdouble frac; gdouble value; gint trough_length; gint trough_start; gint slider_length; gint trough_border; gint trough_under_steppers; if (priv->orientation == GTK_ORIENTATION_VERTICAL) { trough_length = priv->trough.height; trough_start = priv->trough.y; slider_length = priv->slider.height; } else { trough_length = priv->trough.width; trough_start = priv->trough.x; slider_length = priv->slider.width; } gtk_range_get_props (range, NULL, NULL, NULL, &trough_border, NULL, &trough_under_steppers, NULL, NULL); if (! trough_under_steppers) { trough_start += trough_border; trough_length -= 2 * trough_border; } if (trough_length == slider_length) frac = 1.0; else frac = (MAX (0, coord - trough_start) / (gdouble) (trough_length - slider_length)); if (should_invert (range)) frac = 1.0 - frac; value = gtk_adjustment_get_lower (priv->adjustment) + frac * (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment)); return value; } static gboolean gtk_range_key_press (GtkWidget *widget, GdkEventKey *event) { GdkDevice *device; GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; device = gdk_event_get_device ((GdkEvent *) event); device = gdk_device_get_associated_device (device); if (device == priv->grab_device && event->keyval == GDK_KEY_Escape && priv->grab_location != MOUSE_OUTSIDE) { stop_scrolling (range); update_slider_position (range, priv->slide_initial_coordinate, priv->slide_initial_coordinate); return TRUE; } return GTK_WIDGET_CLASS (gtk_range_parent_class)->key_press_event (widget, event); } static gint gtk_range_button_press (GtkWidget *widget, GdkEventButton *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GdkDevice *device, *source_device; GdkInputSource source; if (!gtk_widget_has_focus (widget)) gtk_widget_grab_focus (widget); /* ignore presses when we're already doing something else. */ if (priv->grab_location != MOUSE_OUTSIDE) return FALSE; device = gdk_event_get_device ((GdkEvent *) event); source_device = gdk_event_get_source_device ((GdkEvent *) event); source = gdk_device_get_source (source_device); priv->mouse_x = event->x; priv->mouse_y = event->y; if (gtk_range_update_mouse_location (range)) gtk_widget_queue_draw (widget); if (priv->mouse_location == MOUSE_SLIDER && gdk_event_triggers_context_menu ((GdkEvent *)event)) { gboolean handled; g_signal_emit_by_name (widget, "popup-menu", &handled); return TRUE; } if (source != GDK_SOURCE_TOUCHSCREEN && priv->mouse_location == MOUSE_TROUGH && event->button == GDK_BUTTON_PRIMARY) { /* button 1 steps by page increment, as with button 2 on a stepper */ GtkScrollType scroll; gdouble click_value; click_value = coord_to_value (range, priv->orientation == GTK_ORIENTATION_VERTICAL ? event->y : event->x); priv->trough_click_forward = click_value > gtk_adjustment_get_value (priv->adjustment); range_grab_add (range, device, MOUSE_TROUGH, event->button); scroll = range_get_scroll_for_grab (range); gtk_range_add_step_timer (range, scroll); return TRUE; } else if ((priv->mouse_location == MOUSE_STEPPER_A || priv->mouse_location == MOUSE_STEPPER_B || priv->mouse_location == MOUSE_STEPPER_C || priv->mouse_location == MOUSE_STEPPER_D) && (event->button == GDK_BUTTON_PRIMARY || event->button == GDK_BUTTON_MIDDLE || event->button == GDK_BUTTON_SECONDARY)) { GtkAllocation allocation; GdkRectangle *stepper_area; GtkScrollType scroll; range_grab_add (range, device, priv->mouse_location, event->button); gtk_widget_get_allocation (widget, &allocation); stepper_area = get_area (range, priv->mouse_location); gtk_widget_queue_draw_area (widget, allocation.x + stepper_area->x, allocation.y + stepper_area->y, stepper_area->width, stepper_area->height); scroll = range_get_scroll_for_grab (range); if (scroll != GTK_SCROLL_NONE) gtk_range_add_step_timer (range, scroll); return TRUE; } else if ((priv->mouse_location == MOUSE_TROUGH && (source == GDK_SOURCE_TOUCHSCREEN || event->button == GDK_BUTTON_MIDDLE)) || priv->mouse_location == MOUSE_SLIDER) { gboolean need_value_update = FALSE; /* Any button can be used to drag the slider, but you can start * dragging the slider with a trough click using button 2; * On button 2 press and touch devices, we warp the slider to * mouse position, then begin the slider drag. */ if (event->button == GDK_BUTTON_MIDDLE || source == GDK_SOURCE_TOUCHSCREEN) { gdouble slider_low_value, slider_high_value, new_value; slider_high_value = coord_to_value (range, priv->orientation == GTK_ORIENTATION_VERTICAL ? event->y : event->x); slider_low_value = coord_to_value (range, priv->orientation == GTK_ORIENTATION_VERTICAL ? event->y - priv->slider.height : event->x - priv->slider.width); /* compute new value for warped slider */ new_value = slider_low_value + (slider_high_value - slider_low_value) / 2; /* recalc slider, so we can set slide_initial_slider_position * properly */ priv->need_recalc = TRUE; gtk_range_calc_layout (range, new_value); /* defer adjustment updates to update_slider_position() in order * to keep pixel quantisation */ need_value_update = TRUE; } if (priv->orientation == GTK_ORIENTATION_VERTICAL) { priv->slide_initial_slider_position = priv->slider.y; priv->slide_initial_coordinate = event->y; } else { priv->slide_initial_slider_position = priv->slider.x; priv->slide_initial_coordinate = event->x; } range_grab_add (range, device, MOUSE_SLIDER, event->button); gtk_widget_queue_draw (widget); if (need_value_update) update_slider_position (range, event->x, event->y); return TRUE; } return FALSE; } /* During a slide, move the slider as required given new mouse position */ static void update_slider_position (GtkRange *range, gint mouse_x, gint mouse_y) { GtkRangePrivate *priv = range->priv; gint delta; gint c; gdouble new_value; gboolean handled; gdouble next_value; gdouble mark_value; gdouble mark_delta; gint i; if (priv->orientation == GTK_ORIENTATION_VERTICAL) delta = mouse_y - priv->slide_initial_coordinate; else delta = mouse_x - priv->slide_initial_coordinate; c = priv->slide_initial_slider_position + delta; new_value = coord_to_value (range, c); next_value = coord_to_value (range, c + 1); mark_delta = fabs (next_value - new_value); for (i = 0; i < priv->n_marks; i++) { mark_value = priv->marks[i]; if (fabs (gtk_adjustment_get_value (priv->adjustment) - mark_value) < 3 * mark_delta) { if (fabs (new_value - mark_value) < (priv->slider_end - priv->slider_start) * 0.5 * mark_delta) { new_value = mark_value; break; } } } g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_JUMP, new_value, &handled); } static void stop_scrolling (GtkRange *range) { range_grab_remove (range); gtk_range_remove_step_timer (range); } static gboolean gtk_range_grab_broken (GtkWidget *widget, GdkEventGrabBroken *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GdkDevice *device; device = gdk_event_get_device ((GdkEvent *) event); if (device == priv->grab_device && priv->grab_location != MOUSE_OUTSIDE) { if (priv->grab_location == MOUSE_SLIDER) update_slider_position (range, priv->mouse_x, priv->mouse_y); stop_scrolling (range); return TRUE; } return FALSE; } static gint gtk_range_button_release (GtkWidget *widget, GdkEventButton *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; GdkDevice *device; if (event->window == priv->event_window) { priv->mouse_x = event->x; priv->mouse_y = event->y; } else { gdk_window_get_device_position (priv->event_window, event->device, &priv->mouse_x, &priv->mouse_y, NULL); } device = gdk_event_get_device ((GdkEvent *) event); if (priv->grab_device == device && priv->grab_button == event->button) { if (priv->grab_location == MOUSE_SLIDER) update_slider_position (range, priv->mouse_x, priv->mouse_y); stop_scrolling (range); return TRUE; } return FALSE; } /** * _gtk_range_get_wheel_delta: * @range: a #GtkRange * @event: A #GdkEventScroll * * Returns a good step value for the mouse wheel. * * Return value: A good step value for the mouse wheel. * * Since: 2.4 **/ gdouble _gtk_range_get_wheel_delta (GtkRange *range, GdkEventScroll *event) { GtkRangePrivate *priv = range->priv; GtkAdjustment *adjustment = priv->adjustment; gdouble dx, dy; gdouble delta; gdouble page_size; gdouble page_increment; gdouble scroll_unit; page_size = gtk_adjustment_get_page_size (adjustment); page_increment = gtk_adjustment_get_page_increment (adjustment); if (GTK_IS_SCROLLBAR (range)) scroll_unit = pow (page_size, 2.0 / 3.0); else scroll_unit = page_increment; if (gdk_event_get_scroll_deltas ((GdkEvent *) event, &dx, &dy)) { if (dx != 0 && gtk_orientable_get_orientation (GTK_ORIENTABLE (range)) == GTK_ORIENTATION_HORIZONTAL) delta = dx * scroll_unit; else delta = dy * scroll_unit; } else { if (event->direction == GDK_SCROLL_UP || event->direction == GDK_SCROLL_LEFT) delta = - scroll_unit; else delta = scroll_unit; } if (priv->inverted) delta = - delta; return delta; } static gboolean gtk_range_scroll_event (GtkWidget *widget, GdkEventScroll *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; if (gtk_widget_get_realized (widget)) { gdouble delta; gboolean handled; delta = _gtk_range_get_wheel_delta (range, event); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_JUMP, gtk_adjustment_get_value (priv->adjustment) + delta, &handled); } return TRUE; } static gboolean gtk_range_motion_notify (GtkWidget *widget, GdkEventMotion *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; gdk_event_request_motions (event); priv->mouse_x = event->x; priv->mouse_y = event->y; if (gtk_range_update_mouse_location (range)) gtk_widget_queue_draw (widget); if (priv->grab_location == MOUSE_SLIDER) update_slider_position (range, event->x, event->y); /* We handled the event if the mouse was in the range_rect */ return priv->mouse_location != MOUSE_OUTSIDE; } static gboolean gtk_range_enter_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; priv->mouse_x = event->x; priv->mouse_y = event->y; if (gtk_range_update_mouse_location (range)) gtk_widget_queue_draw (widget); return TRUE; } static gboolean gtk_range_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; priv->mouse_x = -1; priv->mouse_y = -1; if (gtk_range_update_mouse_location (range)) gtk_widget_queue_draw (widget); return TRUE; } static void gtk_range_grab_notify (GtkWidget *widget, gboolean was_grabbed) { GtkRangePrivate *priv = GTK_RANGE (widget)->priv; if (priv->grab_device && gtk_widget_device_is_shadowed (widget, priv->grab_device)) stop_scrolling (GTK_RANGE (widget)); } static void gtk_range_state_flags_changed (GtkWidget *widget, GtkStateFlags previous_state) { if (!gtk_widget_is_sensitive (widget)) stop_scrolling (GTK_RANGE (widget)); } #define check_rectangle(rectangle1, rectangle2) \ { \ if (rectangle1.x != rectangle2.x) return TRUE; \ if (rectangle1.y != rectangle2.y) return TRUE; \ if (rectangle1.width != rectangle2.width) return TRUE; \ if (rectangle1.height != rectangle2.height) return TRUE; \ } static gboolean layout_changed (GtkRangePrivate *priv1, GtkRangePrivate *priv2) { check_rectangle (priv1->slider, priv2->slider); check_rectangle (priv1->trough, priv2->trough); check_rectangle (priv1->stepper_a, priv2->stepper_a); check_rectangle (priv1->stepper_d, priv2->stepper_d); check_rectangle (priv1->stepper_b, priv2->stepper_b); check_rectangle (priv1->stepper_c, priv2->stepper_c); if (priv1->upper_sensitive != priv2->upper_sensitive) return TRUE; if (priv1->lower_sensitive != priv2->lower_sensitive) return TRUE; return FALSE; } static void gtk_range_adjustment_changed (GtkAdjustment *adjustment, gpointer data) { GtkRange *range = GTK_RANGE (data); GtkRangePrivate *priv = range->priv; GtkRangePrivate priv_aux = *priv; priv->recalc_marks = TRUE; priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); /* now check whether the layout changed */ if (layout_changed (priv, &priv_aux)) gtk_widget_queue_draw (GTK_WIDGET (range)); /* Note that we don't round off to priv->round_digits here. * that's because it's really broken to change a value * in response to a change signal on that value; round_digits * is therefore defined to be a filter on what the GtkRange * can input into the adjustment, not a filter that the GtkRange * will enforce on the adjustment. */ } static void gtk_range_adjustment_value_changed (GtkAdjustment *adjustment, gpointer data) { GtkRange *range = GTK_RANGE (data); GtkRangePrivate *priv = range->priv; GtkRangePrivate priv_aux = *priv; priv->need_recalc = TRUE; gtk_range_calc_layout (range, gtk_adjustment_get_value (priv->adjustment)); /* now check whether the layout changed */ if (layout_changed (priv, &priv_aux) || (GTK_IS_SCALE (range) && gtk_scale_get_draw_value (GTK_SCALE (range)))) { gtk_widget_queue_draw (GTK_WIDGET (range)); } /* Note that we don't round off to priv->round_digits here. * that's because it's really broken to change a value * in response to a change signal on that value; round_digits * is therefore defined to be a filter on what the GtkRange * can input into the adjustment, not a filter that the GtkRange * will enforce on the adjustment. */ g_signal_emit (range, signals[VALUE_CHANGED], 0); } static void gtk_range_style_updated (GtkWidget *widget) { GtkRange *range = GTK_RANGE (widget); GtkRangePrivate *priv = range->priv; priv->need_recalc = TRUE; GTK_WIDGET_CLASS (gtk_range_parent_class)->style_updated (widget); } static void apply_marks (GtkRange *range, gdouble oldval, gdouble *newval) { GtkRangePrivate *priv = range->priv; gint i; gdouble mark; for (i = 0; i < priv->n_marks; i++) { mark = priv->marks[i]; if ((oldval < mark && mark < *newval) || (oldval > mark && mark > *newval)) { *newval = mark; return; } } } static void step_back (GtkRange *range) { GtkRangePrivate *priv = range->priv; gdouble newval; gboolean handled; newval = gtk_adjustment_get_value (priv->adjustment) - gtk_adjustment_get_step_increment (priv->adjustment); apply_marks (range, gtk_adjustment_get_value (priv->adjustment), &newval); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_STEP_BACKWARD, newval, &handled); } static void step_forward (GtkRange *range) { GtkRangePrivate *priv = range->priv; gdouble newval; gboolean handled; newval = gtk_adjustment_get_value (priv->adjustment) + gtk_adjustment_get_step_increment (priv->adjustment); apply_marks (range, gtk_adjustment_get_value (priv->adjustment), &newval); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_STEP_FORWARD, newval, &handled); } static void page_back (GtkRange *range) { GtkRangePrivate *priv = range->priv; gdouble newval; gboolean handled; newval = gtk_adjustment_get_value (priv->adjustment) - gtk_adjustment_get_page_increment (priv->adjustment); apply_marks (range, gtk_adjustment_get_value (priv->adjustment), &newval); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_PAGE_BACKWARD, newval, &handled); } static void page_forward (GtkRange *range) { GtkRangePrivate *priv = range->priv; gdouble newval; gboolean handled; newval = gtk_adjustment_get_value (priv->adjustment) + gtk_adjustment_get_page_increment (priv->adjustment); apply_marks (range, gtk_adjustment_get_value (priv->adjustment), &newval); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_PAGE_FORWARD, newval, &handled); } static void scroll_begin (GtkRange *range) { GtkRangePrivate *priv = range->priv; gboolean handled; g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_START, gtk_adjustment_get_lower (priv->adjustment), &handled); } static void scroll_end (GtkRange *range) { GtkRangePrivate *priv = range->priv; gdouble newval; gboolean handled; newval = gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment); g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_END, newval, &handled); } static gboolean gtk_range_scroll (GtkRange *range, GtkScrollType scroll) { GtkRangePrivate *priv = range->priv; gdouble old_value = gtk_adjustment_get_value (priv->adjustment); switch (scroll) { case GTK_SCROLL_STEP_LEFT: if (should_invert (range)) step_forward (range); else step_back (range); break; case GTK_SCROLL_STEP_UP: if (should_invert (range)) step_forward (range); else step_back (range); break; case GTK_SCROLL_STEP_RIGHT: if (should_invert (range)) step_back (range); else step_forward (range); break; case GTK_SCROLL_STEP_DOWN: if (should_invert (range)) step_back (range); else step_forward (range); break; case GTK_SCROLL_STEP_BACKWARD: step_back (range); break; case GTK_SCROLL_STEP_FORWARD: step_forward (range); break; case GTK_SCROLL_PAGE_LEFT: if (should_invert (range)) page_forward (range); else page_back (range); break; case GTK_SCROLL_PAGE_UP: if (should_invert (range)) page_forward (range); else page_back (range); break; case GTK_SCROLL_PAGE_RIGHT: if (should_invert (range)) page_back (range); else page_forward (range); break; case GTK_SCROLL_PAGE_DOWN: if (should_invert (range)) page_back (range); else page_forward (range); break; case GTK_SCROLL_PAGE_BACKWARD: page_back (range); break; case GTK_SCROLL_PAGE_FORWARD: page_forward (range); break; case GTK_SCROLL_START: scroll_begin (range); break; case GTK_SCROLL_END: scroll_end (range); break; case GTK_SCROLL_JUMP: /* Used by CList, range doesn't use it. */ break; case GTK_SCROLL_NONE: break; } return gtk_adjustment_get_value (priv->adjustment) != old_value; } static void gtk_range_move_slider (GtkRange *range, GtkScrollType scroll) { GtkRangePrivate *priv = range->priv; gboolean cursor_only; g_object_get (gtk_widget_get_settings (GTK_WIDGET (range)), "gtk-keynav-cursor-only", &cursor_only, NULL); if (cursor_only) { GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (range)); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) { if (scroll == GTK_SCROLL_STEP_UP || scroll == GTK_SCROLL_STEP_DOWN) { if (toplevel) gtk_widget_child_focus (toplevel, scroll == GTK_SCROLL_STEP_UP ? GTK_DIR_UP : GTK_DIR_DOWN); return; } } else { if (scroll == GTK_SCROLL_STEP_LEFT || scroll == GTK_SCROLL_STEP_RIGHT) { if (toplevel) gtk_widget_child_focus (toplevel, scroll == GTK_SCROLL_STEP_LEFT ? GTK_DIR_LEFT : GTK_DIR_RIGHT); return; } } } if (! gtk_range_scroll (range, scroll)) gtk_widget_error_bell (GTK_WIDGET (range)); } static void gtk_range_get_props (GtkRange *range, gint *slider_width, gint *stepper_size, gint *focus_width, gint *trough_border, gint *stepper_spacing, gboolean *trough_under_steppers, gint *arrow_displacement_x, gint *arrow_displacement_y) { GtkWidget *widget = GTK_WIDGET (range); gint tmp_slider_width, tmp_stepper_size, tmp_focus_width, tmp_trough_border; gint tmp_stepper_spacing, tmp_trough_under_steppers; gint tmp_arrow_displacement_x, tmp_arrow_displacement_y; gtk_widget_style_get (widget, "slider-width", &tmp_slider_width, "trough-border", &tmp_trough_border, "stepper-size", &tmp_stepper_size, "stepper-spacing", &tmp_stepper_spacing, "trough-under-steppers", &tmp_trough_under_steppers, "arrow-displacement-x", &tmp_arrow_displacement_x, "arrow-displacement-y", &tmp_arrow_displacement_y, NULL); if (gtk_widget_get_can_focus (GTK_WIDGET (range))) { gint focus_line_width; gint focus_padding; gtk_widget_style_get (GTK_WIDGET (range), "focus-line-width", &focus_line_width, "focus-padding", &focus_padding, NULL); tmp_focus_width = focus_line_width + focus_padding; } else { tmp_focus_width = 0; } if (slider_width) *slider_width = tmp_slider_width; if (focus_width) *focus_width = tmp_focus_width; if (trough_border) *trough_border = tmp_trough_border; if (stepper_size) *stepper_size = tmp_stepper_size; if (stepper_spacing) *stepper_spacing = tmp_stepper_spacing; if (trough_under_steppers) *trough_under_steppers = tmp_trough_under_steppers; if (arrow_displacement_x) *arrow_displacement_x = tmp_arrow_displacement_x; if (arrow_displacement_y) *arrow_displacement_y = tmp_arrow_displacement_y; } #define POINT_IN_RECT(xcoord, ycoord, rect) \ ((xcoord) >= (rect).x && \ (xcoord) < ((rect).x + (rect).width) && \ (ycoord) >= (rect).y && \ (ycoord) < ((rect).y + (rect).height)) /* Update mouse location, return TRUE if it changes */ static gboolean gtk_range_update_mouse_location (GtkRange *range) { GtkRangePrivate *priv = range->priv; GtkAllocation allocation; gint x, y; MouseLocation old; GtkWidget *widget = GTK_WIDGET (range); old = priv->mouse_location; x = priv->mouse_x; y = priv->mouse_y; gtk_widget_get_allocation (widget, &allocation); if (priv->grab_location != MOUSE_OUTSIDE) priv->mouse_location = priv->grab_location; else if (POINT_IN_RECT (x, y, priv->stepper_a)) priv->mouse_location = MOUSE_STEPPER_A; else if (POINT_IN_RECT (x, y, priv->stepper_b)) priv->mouse_location = MOUSE_STEPPER_B; else if (POINT_IN_RECT (x, y, priv->stepper_c)) priv->mouse_location = MOUSE_STEPPER_C; else if (POINT_IN_RECT (x, y, priv->stepper_d)) priv->mouse_location = MOUSE_STEPPER_D; else if (POINT_IN_RECT (x, y, priv->slider)) priv->mouse_location = MOUSE_SLIDER; else if (POINT_IN_RECT (x, y, priv->trough)) priv->mouse_location = MOUSE_TROUGH; else if (POINT_IN_RECT (x, y, allocation)) priv->mouse_location = MOUSE_WIDGET; else priv->mouse_location = MOUSE_OUTSIDE; return old != priv->mouse_location; } /* Clamp rect, border inside widget->allocation, such that we prefer * to take space from border not rect in all directions, and prefer to * give space to border over rect in one direction. */ static void clamp_dimensions (GtkWidget *widget, GdkRectangle *rect, GtkBorder *border, gboolean border_expands_horizontally) { GtkAllocation allocation; gint extra, shortage; g_return_if_fail (rect->x == 0); g_return_if_fail (rect->y == 0); g_return_if_fail (rect->width >= 0); g_return_if_fail (rect->height >= 0); gtk_widget_get_allocation (widget, &allocation); /* Width */ extra = allocation.width - border->left - border->right - rect->width; if (extra > 0) { if (border_expands_horizontally) { border->left += extra / 2; border->right += extra / 2 + extra % 2; } else { rect->width += extra; } } /* See if we can fit rect, if not kill the border */ shortage = rect->width - allocation.width; if (shortage > 0) { rect->width = allocation.width; /* lose the border */ border->left = 0; border->right = 0; } else { /* See if we can fit rect with borders */ shortage = rect->width + border->left + border->right - allocation.width; if (shortage > 0) { /* Shrink borders */ border->left -= shortage / 2; border->right -= shortage / 2 + shortage % 2; } } /* Height */ extra = allocation.height - border->top - border->bottom - rect->height; if (extra > 0) { if (border_expands_horizontally) { /* don't expand border vertically */ rect->height += extra; } else { border->top += extra / 2; border->bottom += extra / 2 + extra % 2; } } /* See if we can fit rect, if not kill the border */ shortage = rect->height - allocation.height; if (shortage > 0) { rect->height = allocation.height; /* lose the border */ border->top = 0; border->bottom = 0; } else { /* See if we can fit rect with borders */ shortage = rect->height + border->top + border->bottom - allocation.height; if (shortage > 0) { /* Shrink borders */ border->top -= shortage / 2; border->bottom -= shortage / 2 + shortage % 2; } } } static void gtk_range_calc_request (GtkRange *range, gint slider_width, gint stepper_size, gint focus_width, gint trough_border, gint stepper_spacing, GdkRectangle *range_rect, GtkBorder *border, gint *n_steppers_p, gboolean *has_steppers_ab, gboolean *has_steppers_cd, gint *slider_length_p) { GtkRangePrivate *priv = range->priv; gint slider_length; gint n_steppers; gint n_steppers_ab; gint n_steppers_cd; border->left = 0; border->right = 0; border->top = 0; border->bottom = 0; if (GTK_RANGE_GET_CLASS (range)->get_range_border) GTK_RANGE_GET_CLASS (range)->get_range_border (range, border); n_steppers_ab = 0; n_steppers_cd = 0; if (priv->has_stepper_a) n_steppers_ab += 1; if (priv->has_stepper_b) n_steppers_ab += 1; if (priv->has_stepper_c) n_steppers_cd += 1; if (priv->has_stepper_d) n_steppers_cd += 1; n_steppers = n_steppers_ab + n_steppers_cd; slider_length = priv->min_slider_size; range_rect->x = 0; range_rect->y = 0; /* We never expand to fill available space in the small dimension * (i.e. vertical scrollbars are always a fixed width) */ if (priv->orientation == GTK_ORIENTATION_VERTICAL) { range_rect->width = (focus_width + trough_border) * 2 + slider_width; range_rect->height = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length; if (n_steppers_ab > 0) range_rect->height += stepper_spacing; if (n_steppers_cd > 0) range_rect->height += stepper_spacing; } else { range_rect->width = stepper_size * n_steppers + (focus_width + trough_border) * 2 + slider_length; range_rect->height = (focus_width + trough_border) * 2 + slider_width; if (n_steppers_ab > 0) range_rect->width += stepper_spacing; if (n_steppers_cd > 0) range_rect->width += stepper_spacing; } if (n_steppers_p) *n_steppers_p = n_steppers; if (has_steppers_ab) *has_steppers_ab = (n_steppers_ab > 0); if (has_steppers_cd) *has_steppers_cd = (n_steppers_cd > 0); if (slider_length_p) *slider_length_p = slider_length; } static void gtk_range_calc_layout (GtkRange *range, gdouble adjustment_value) { GtkRangePrivate *priv = range->priv; gint slider_width, stepper_size, focus_width, trough_border, stepper_spacing; gint slider_length; GtkBorder border; gint n_steppers; gboolean has_steppers_ab; gboolean has_steppers_cd; gboolean trough_under_steppers; GdkRectangle range_rect; GtkWidget *widget; if (!priv->need_recalc) return; /* If we have a too-small allocation, we prefer the steppers over * the trough/slider, probably the steppers are a more useful * feature in small spaces. * * Also, we prefer to draw the range itself rather than the border * areas if there's a conflict, since the borders will be decoration * not controls. Though this depends on subclasses cooperating by * not drawing on priv->range_rect. */ widget = GTK_WIDGET (range); gtk_range_get_props (range, &slider_width, &stepper_size, &focus_width, &trough_border, &stepper_spacing, &trough_under_steppers, NULL, NULL); gtk_range_calc_request (range, slider_width, stepper_size, focus_width, trough_border, stepper_spacing, &range_rect, &border, &n_steppers, &has_steppers_ab, &has_steppers_cd, &slider_length); /* We never expand to fill available space in the small dimension * (i.e. vertical scrollbars are always a fixed width) */ if (priv->orientation == GTK_ORIENTATION_VERTICAL) { clamp_dimensions (widget, &range_rect, &border, TRUE); } else { clamp_dimensions (widget, &range_rect, &border, FALSE); } range_rect.x = border.left; range_rect.y = border.top; priv->range_rect = range_rect; if (priv->orientation == GTK_ORIENTATION_VERTICAL) { gint stepper_width, stepper_height; /* Steppers are the width of the range, and stepper_size in * height, or if we don't have enough height, divided equally * among available space. */ stepper_width = range_rect.width - focus_width * 2; if (trough_under_steppers) stepper_width -= trough_border * 2; if (stepper_width < 1) stepper_width = range_rect.width; /* screw the trough border */ if (n_steppers == 0) stepper_height = 0; /* avoid divide by n_steppers */ else stepper_height = MIN (stepper_size, (range_rect.height / n_steppers)); /* Stepper A */ priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers; priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers; if (priv->has_stepper_a) { priv->stepper_a.width = stepper_width; priv->stepper_a.height = stepper_height; } else { priv->stepper_a.width = 0; priv->stepper_a.height = 0; } /* Stepper B */ priv->stepper_b.x = priv->stepper_a.x; priv->stepper_b.y = priv->stepper_a.y + priv->stepper_a.height; if (priv->has_stepper_b) { priv->stepper_b.width = stepper_width; priv->stepper_b.height = stepper_height; } else { priv->stepper_b.width = 0; priv->stepper_b.height = 0; } /* Stepper D */ if (priv->has_stepper_d) { priv->stepper_d.width = stepper_width; priv->stepper_d.height = stepper_height; } else { priv->stepper_d.width = 0; priv->stepper_d.height = 0; } priv->stepper_d.x = priv->stepper_a.x; priv->stepper_d.y = range_rect.y + range_rect.height - priv->stepper_d.height - focus_width - trough_border * trough_under_steppers; /* Stepper C */ if (priv->has_stepper_c) { priv->stepper_c.width = stepper_width; priv->stepper_c.height = stepper_height; } else { priv->stepper_c.width = 0; priv->stepper_c.height = 0; } priv->stepper_c.x = priv->stepper_a.x; priv->stepper_c.y = priv->stepper_d.y - priv->stepper_c.height; /* Now the trough is the remaining space between steppers B and C, * if any, minus spacing */ priv->trough.x = range_rect.x; priv->trough.y = priv->stepper_b.y + priv->stepper_b.height + stepper_spacing * has_steppers_ab; priv->trough.width = range_rect.width; priv->trough.height = priv->stepper_c.y - priv->trough.y - stepper_spacing * has_steppers_cd; /* Slider fits into the trough, with stepper_spacing on either side, * and the size/position based on the adjustment or fixed, depending. */ priv->slider.x = priv->trough.x + focus_width + trough_border; priv->slider.width = priv->trough.width - (focus_width + trough_border) * 2; /* Compute slider position/length */ { gint y, bottom, top, height; top = priv->trough.y; bottom = priv->trough.y + priv->trough.height; if (! trough_under_steppers) { top += trough_border; bottom -= trough_border; } /* slider height is the fraction (page_size / * total_adjustment_range) times the trough height in pixels */ if (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) != 0) height = ((bottom - top) * (gtk_adjustment_get_page_size (priv->adjustment) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment)))); else height = priv->min_slider_size; if (height < priv->min_slider_size || priv->slider_size_fixed) height = priv->min_slider_size; height = MIN (height, priv->trough.height); y = top; if (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment) != 0) y += (bottom - top - height) * ((adjustment_value - gtk_adjustment_get_lower (priv->adjustment)) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment))); y = CLAMP (y, top, bottom); if (should_invert (range)) y = bottom - (y - top + height); priv->slider.y = y; priv->slider.height = height; /* These are publically exported */ priv->slider_start = priv->slider.y; priv->slider_end = priv->slider.y + priv->slider.height; } } else { gint stepper_width, stepper_height; /* Steppers are the height of the range, and stepper_size in * width, or if we don't have enough width, divided equally * among available space. */ stepper_height = range_rect.height + focus_width * 2; if (trough_under_steppers) stepper_height -= trough_border * 2; if (stepper_height < 1) stepper_height = range_rect.height; /* screw the trough border */ if (n_steppers == 0) stepper_width = 0; /* avoid divide by n_steppers */ else stepper_width = MIN (stepper_size, (range_rect.width / n_steppers)); /* Stepper A */ priv->stepper_a.x = range_rect.x + focus_width + trough_border * trough_under_steppers; priv->stepper_a.y = range_rect.y + focus_width + trough_border * trough_under_steppers; if (priv->has_stepper_a) { priv->stepper_a.width = stepper_width; priv->stepper_a.height = stepper_height; } else { priv->stepper_a.width = 0; priv->stepper_a.height = 0; } /* Stepper B */ priv->stepper_b.x = priv->stepper_a.x + priv->stepper_a.width; priv->stepper_b.y = priv->stepper_a.y; if (priv->has_stepper_b) { priv->stepper_b.width = stepper_width; priv->stepper_b.height = stepper_height; } else { priv->stepper_b.width = 0; priv->stepper_b.height = 0; } /* Stepper D */ if (priv->has_stepper_d) { priv->stepper_d.width = stepper_width; priv->stepper_d.height = stepper_height; } else { priv->stepper_d.width = 0; priv->stepper_d.height = 0; } priv->stepper_d.x = range_rect.x + range_rect.width - priv->stepper_d.width - focus_width - trough_border * trough_under_steppers; priv->stepper_d.y = priv->stepper_a.y; /* Stepper C */ if (priv->has_stepper_c) { priv->stepper_c.width = stepper_width; priv->stepper_c.height = stepper_height; } else { priv->stepper_c.width = 0; priv->stepper_c.height = 0; } priv->stepper_c.x = priv->stepper_d.x - priv->stepper_c.width; priv->stepper_c.y = priv->stepper_a.y; /* Now the trough is the remaining space between steppers B and C, * if any */ priv->trough.x = priv->stepper_b.x + priv->stepper_b.width + stepper_spacing * has_steppers_ab; priv->trough.y = range_rect.y; priv->trough.width = priv->stepper_c.x - priv->trough.x - stepper_spacing * has_steppers_cd; priv->trough.height = range_rect.height; /* Slider fits into the trough, with stepper_spacing on either side, * and the size/position based on the adjustment or fixed, depending. */ priv->slider.y = priv->trough.y + focus_width + trough_border; priv->slider.height = priv->trough.height - (focus_width + trough_border) * 2; /* Compute slider position/length */ { gint x, left, right, width; left = priv->trough.x; right = priv->trough.x + priv->trough.width; if (! trough_under_steppers) { left += trough_border; right -= trough_border; } /* slider width is the fraction (page_size / * total_adjustment_range) times the trough width in pixels */ if (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) != 0) width = ((right - left) * (gtk_adjustment_get_page_size (priv->adjustment) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment)))); else width = priv->min_slider_size; if (width < priv->min_slider_size || priv->slider_size_fixed) width = priv->min_slider_size; width = MIN (width, priv->trough.width); x = left; if (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment) != 0) x += (right - left - width) * ((adjustment_value - gtk_adjustment_get_lower (priv->adjustment)) / (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_lower (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment))); x = CLAMP (x, left, right); if (should_invert (range)) x = right - (x - left + width); priv->slider.x = x; priv->slider.width = width; /* These are publically exported */ priv->slider_start = priv->slider.x; priv->slider_end = priv->slider.x + priv->slider.width; } } gtk_range_update_mouse_location (range); switch (priv->upper_sensitivity) { case GTK_SENSITIVITY_AUTO: priv->upper_sensitive = (gtk_adjustment_get_value (priv->adjustment) < (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment))); break; case GTK_SENSITIVITY_ON: priv->upper_sensitive = TRUE; break; case GTK_SENSITIVITY_OFF: priv->upper_sensitive = FALSE; break; } switch (priv->lower_sensitivity) { case GTK_SENSITIVITY_AUTO: priv->lower_sensitive = (gtk_adjustment_get_value (priv->adjustment) > gtk_adjustment_get_lower (priv->adjustment)); break; case GTK_SENSITIVITY_ON: priv->lower_sensitive = TRUE; break; case GTK_SENSITIVITY_OFF: priv->lower_sensitive = FALSE; break; } } static GdkRectangle* get_area (GtkRange *range, MouseLocation location) { GtkRangePrivate *priv = range->priv; switch (location) { case MOUSE_STEPPER_A: return &priv->stepper_a; case MOUSE_STEPPER_B: return &priv->stepper_b; case MOUSE_STEPPER_C: return &priv->stepper_c; case MOUSE_STEPPER_D: return &priv->stepper_d; case MOUSE_TROUGH: return &priv->trough; case MOUSE_SLIDER: return &priv->slider; case MOUSE_WIDGET: case MOUSE_OUTSIDE: break; } g_warning (G_STRLOC": bug"); return NULL; } static void gtk_range_calc_marks (GtkRange *range) { GtkRangePrivate *priv = range->priv; gint i; if (!priv->recalc_marks) return; priv->recalc_marks = FALSE; for (i = 0; i < priv->n_marks; i++) { priv->need_recalc = TRUE; gtk_range_calc_layout (range, priv->marks[i]); if (priv->orientation == GTK_ORIENTATION_HORIZONTAL) priv->mark_pos[i] = priv->slider.x + priv->slider.width / 2; else priv->mark_pos[i] = priv->slider.y + priv->slider.height / 2; } priv->need_recalc = TRUE; } static gboolean gtk_range_real_change_value (GtkRange *range, GtkScrollType scroll, gdouble value) { GtkRangePrivate *priv = range->priv; /* potentially adjust the bounds _before_ we clamp */ g_signal_emit (range, signals[ADJUST_BOUNDS], 0, value); if (priv->restrict_to_fill_level) value = MIN (value, MAX (gtk_adjustment_get_lower (priv->adjustment), priv->fill_level)); value = CLAMP (value, gtk_adjustment_get_lower (priv->adjustment), (gtk_adjustment_get_upper (priv->adjustment) - gtk_adjustment_get_page_size (priv->adjustment))); if (priv->round_digits >= 0) { gdouble power; gint i; i = priv->round_digits; power = 1; while (i--) power *= 10; value = floor ((value * power) + 0.5) / power; } if (gtk_adjustment_get_value (priv->adjustment) != value) { priv->need_recalc = TRUE; gtk_widget_queue_draw (GTK_WIDGET (range)); gtk_adjustment_set_value (priv->adjustment, value); } return FALSE; } struct _GtkRangeStepTimer { guint timeout_id; GtkScrollType step; }; static gboolean second_timeout (gpointer data) { GtkRange *range = GTK_RANGE (data); GtkRangePrivate *priv = range->priv; gtk_range_scroll (range, priv->timer->step); return TRUE; } static gboolean initial_timeout (gpointer data) { GtkRange *range = GTK_RANGE (data); GtkRangePrivate *priv = range->priv; GtkSettings *settings; guint timeout; settings = gtk_widget_get_settings (GTK_WIDGET (data)); g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL); priv->timer->timeout_id = gdk_threads_add_timeout (timeout * SCROLL_DELAY_FACTOR, second_timeout, range); /* remove self */ return FALSE; } static void gtk_range_add_step_timer (GtkRange *range, GtkScrollType step) { GtkRangePrivate *priv = range->priv; GtkSettings *settings; guint timeout; g_return_if_fail (priv->timer == NULL); g_return_if_fail (step != GTK_SCROLL_NONE); settings = gtk_widget_get_settings (GTK_WIDGET (range)); g_object_get (settings, "gtk-timeout-initial", &timeout, NULL); priv->timer = g_new (GtkRangeStepTimer, 1); priv->timer->timeout_id = gdk_threads_add_timeout (timeout, initial_timeout, range); priv->timer->step = step; gtk_range_scroll (range, priv->timer->step); } static void gtk_range_remove_step_timer (GtkRange *range) { GtkRangePrivate *priv = range->priv; if (priv->timer) { if (priv->timer->timeout_id != 0) g_source_remove (priv->timer->timeout_id); g_free (priv->timer); priv->timer = NULL; } } void _gtk_range_set_has_origin (GtkRange *range, gboolean has_origin) { range->priv->has_origin = has_origin; } gboolean _gtk_range_get_has_origin (GtkRange *range) { return range->priv->has_origin; } void _gtk_range_set_stop_values (GtkRange *range, gdouble *values, gint n_values) { GtkRangePrivate *priv = range->priv; gint i; g_free (priv->marks); priv->marks = g_new (gdouble, n_values); g_free (priv->mark_pos); priv->mark_pos = g_new (gint, n_values); priv->n_marks = n_values; for (i = 0; i < n_values; i++) priv->marks[i] = values[i]; priv->recalc_marks = TRUE; } gint _gtk_range_get_stop_positions (GtkRange *range, gint **values) { GtkRangePrivate *priv = range->priv; gtk_range_calc_marks (range); if (values) *values = g_memdup (priv->mark_pos, priv->n_marks * sizeof (gint)); return priv->n_marks; } /** * gtk_range_set_round_digits: * @range: a #GtkRange * @round_digits: the precision in digits, or -1 * * Sets the number of digits to round the value to when * it changes. See #GtkRange::change-value. * * Since: 2.24 */ void gtk_range_set_round_digits (GtkRange *range, gint round_digits) { g_return_if_fail (GTK_IS_RANGE (range)); g_return_if_fail (round_digits >= -1); range->priv->round_digits = round_digits; g_object_notify (G_OBJECT (range), "round-digits"); } /** * gtk_range_get_round_digits: * @range: a #GtkRange * * Gets the number of digits to round the value to when * it changes. See #GtkRange::change-value. * * Return value: the number of digits to round to * * Since: 2.24 */ gint gtk_range_get_round_digits (GtkRange *range) { g_return_val_if_fail (GTK_IS_RANGE (range), -1); return range->priv->round_digits; } void _gtk_range_set_steppers (GtkRange *range, gboolean has_a, gboolean has_b, gboolean has_c, gboolean has_d) { range->priv->has_stepper_a = has_a; range->priv->has_stepper_b = has_b; range->priv->has_stepper_c = has_c; range->priv->has_stepper_d = has_d; }