1 files changed, 436 insertions, 0 deletions

diff --git a/gtk/gtkhscale.c b/gtk/gtkhscale.c
new file mode 100644
index 0000000000..3bebd30fca
--- /dev/null
+++ b/gtk/gtkhscale.c
@@ -0,0 +1,436 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include "gtkhscale.h"
+#include "gtksignal.h"
+#include "gdk/gdkkeysyms.h"
+
+
+#define SCALE_CLASS(w)  GTK_SCALE_CLASS (GTK_OBJECT (w)->klass)
+#define RANGE_CLASS(w)  GTK_RANGE_CLASS (GTK_OBJECT (w)->klass)
+
+
+static void gtk_hscale_class_init    (GtkHScaleClass *klass);
+static void gtk_hscale_init          (GtkHScale      *hscale);
+static void gtk_hscale_realize       (GtkWidget      *widget);
+static void gtk_hscale_size_request  (GtkWidget      *widget,
+				      GtkRequisition *requisition);
+static void gtk_hscale_size_allocate (GtkWidget      *widget,
+				      GtkAllocation  *allocation);
+static void gtk_hscale_pos_trough    (GtkHScale      *hscale,
+				      gint           *x,
+				      gint           *y,
+				      gint           *w,
+				      gint           *h);
+static void gtk_hscale_draw_slider   (GtkRange       *range);
+static void gtk_hscale_draw_value    (GtkScale       *scale);
+static gint gtk_hscale_trough_keys   (GtkRange *range,
+				      GdkEventKey *key,
+				      GtkScrollType *scroll,
+				      GtkTroughType *pos);
+
+guint
+gtk_hscale_get_type ()
+{
+  static guint hscale_type = 0;
+
+  if (!hscale_type)
+    {
+      GtkTypeInfo hscale_info =
+      {
+	"GtkHScale",
+	sizeof (GtkHScale),
+	sizeof (GtkHScaleClass),
+	(GtkClassInitFunc) gtk_hscale_class_init,
+	(GtkObjectInitFunc) gtk_hscale_init,
+	(GtkArgFunc) NULL,
+      };
+
+      hscale_type = gtk_type_unique (gtk_scale_get_type (), &hscale_info);
+    }
+
+  return hscale_type;
+}
+
+static void
+gtk_hscale_class_init (GtkHScaleClass *class)
+{
+  GtkWidgetClass *widget_class;
+  GtkRangeClass *range_class;
+  GtkScaleClass *scale_class;
+
+  widget_class = (GtkWidgetClass*) class;
+  range_class = (GtkRangeClass*) class;
+  scale_class = (GtkScaleClass*) class;
+
+  widget_class->realize = gtk_hscale_realize;
+  widget_class->size_request = gtk_hscale_size_request;
+  widget_class->size_allocate = gtk_hscale_size_allocate;
+
+  range_class->slider_update = gtk_range_default_hslider_update;
+  range_class->trough_click = gtk_range_default_htrough_click;
+  range_class->motion = gtk_range_default_hmotion;
+  range_class->draw_slider = gtk_hscale_draw_slider;
+  range_class->trough_keys = gtk_hscale_trough_keys;
+
+  scale_class->draw_value = gtk_hscale_draw_value;
+}
+
+static void
+gtk_hscale_init (GtkHScale *hscale)
+{
+}
+
+GtkWidget*
+gtk_hscale_new (GtkAdjustment *adjustment)
+{
+  GtkHScale *hscale;
+
+  hscale = gtk_type_new (gtk_hscale_get_type ());
+
+  if (!adjustment)
+    adjustment = (GtkAdjustment*) gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+
+  gtk_range_set_adjustment (GTK_RANGE (hscale), adjustment);
+
+  return GTK_WIDGET (hscale);
+}
+
+
+static void
+gtk_hscale_realize (GtkWidget *widget)
+{
+  GtkRange *range;
+  GdkWindowAttr attributes;
+  gint attributes_mask;
+  gint x, y, w, h;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (widget));
+
+  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+  range = GTK_RANGE (widget);
+
+  attributes.x = widget->allocation.x;
+  attributes.y = widget->allocation.y;
+  attributes.width = widget->allocation.width;
+  attributes.height = widget->allocation.height;
+  attributes.wclass = GDK_INPUT_OUTPUT;
+  attributes.window_type = GDK_WINDOW_CHILD;
+  attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
+  attributes.visual = gtk_widget_get_visual (widget);
+  attributes.colormap = gtk_widget_get_colormap (widget);
+
+  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+  widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
+
+  gtk_hscale_pos_trough (GTK_HSCALE (widget), &x, &y, &w, &h);
+  attributes.x = x;
+  attributes.y = y;
+  attributes.width = w;
+  attributes.height = h;
+  attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
+			    GDK_BUTTON_RELEASE_MASK |
+			    GDK_ENTER_NOTIFY_MASK |
+			    GDK_LEAVE_NOTIFY_MASK);
+
+  range->trough = gdk_window_new (widget->window, &attributes, attributes_mask);
+
+  attributes.width = SCALE_CLASS (range)->slider_length;
+  attributes.height = RANGE_CLASS (range)->slider_width;
+  attributes.event_mask |= (GDK_BUTTON_MOTION_MASK |
+			    GDK_POINTER_MOTION_HINT_MASK);
+
+  range->slider = gdk_window_new (range->trough, &attributes, attributes_mask);
+
+  widget->style = gtk_style_attach (widget->style, widget->window);
+
+  gdk_window_set_user_data (widget->window, widget);
+  gdk_window_set_user_data (range->trough, widget);
+  gdk_window_set_user_data (range->slider, widget);
+
+  gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+  gtk_style_set_background (widget->style, range->trough, GTK_STATE_ACTIVE);
+  gtk_style_set_background (widget->style, range->slider, GTK_STATE_NORMAL);
+
+  gtk_range_slider_update (GTK_RANGE (widget));
+
+  gdk_window_show (range->slider);
+  gdk_window_show (range->trough);
+}
+
+static void
+gtk_hscale_size_request (GtkWidget      *widget,
+			 GtkRequisition *requisition)
+{
+  GtkScale *scale;
+  gint value_width;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (widget));
+  g_return_if_fail (requisition != NULL);
+
+  scale = GTK_SCALE (widget);
+
+  requisition->width = (SCALE_CLASS (scale)->slider_length +
+			widget->style->klass->xthickness) * 2;
+  requisition->height = (RANGE_CLASS (scale)->slider_width +
+			 widget->style->klass->ythickness * 2);
+
+  if (scale->draw_value)
+    {
+      value_width = gtk_scale_value_width (scale);
+
+      if ((scale->value_pos == GTK_POS_LEFT) ||
+	  (scale->value_pos == GTK_POS_RIGHT))
+	{
+	  requisition->width += value_width + SCALE_CLASS (scale)->value_spacing;
+	  if (requisition->height < (widget->style->font->ascent + widget->style->font->descent))
+	    requisition->height = widget->style->font->ascent + widget->style->font->descent;
+	}
+      else if ((scale->value_pos == GTK_POS_TOP) ||
+	       (scale->value_pos == GTK_POS_BOTTOM))
+	{
+	  if (requisition->width < value_width)
+	    requisition->width = value_width;
+	  requisition->height += widget->style->font->ascent + widget->style->font->descent;
+	}
+    }
+}
+
+static void
+gtk_hscale_size_allocate (GtkWidget     *widget,
+			  GtkAllocation *allocation)
+{
+  GtkRange *range;
+  GtkScale *scale;
+  gint width, height;
+  gint x, y;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (widget));
+  g_return_if_fail (allocation != NULL);
+
+  widget->allocation = *allocation;
+  if (GTK_WIDGET_REALIZED (widget))
+    {
+      range = GTK_RANGE (widget);
+      scale = GTK_SCALE (widget);
+
+      gdk_window_move_resize (widget->window,
+			      allocation->x, allocation->y,
+			      allocation->width, allocation->height);
+
+      gtk_hscale_pos_trough (GTK_HSCALE (widget), &x, &y, &width, &height);
+
+      gdk_window_move_resize (range->trough, x, y, width, height);
+      gtk_range_slider_update (GTK_RANGE (widget));
+    }
+}
+
+static void
+gtk_hscale_pos_trough (GtkHScale *hscale,
+		       gint      *x,
+		       gint      *y,
+		       gint      *w,
+		       gint      *h)
+{
+  GtkWidget *widget;
+  GtkScale *scale;
+
+  g_return_if_fail (hscale != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (hscale));
+  g_return_if_fail ((x != NULL) && (y != NULL) && (w != NULL) && (h != NULL));
+
+  widget = GTK_WIDGET (hscale);
+  scale = GTK_SCALE (hscale);
+
+  *w = widget->allocation.width;
+  *h = (RANGE_CLASS (scale)->slider_width +
+	widget->style->klass->ythickness * 2);
+
+  if (scale->draw_value)
+    {
+      *x = 0;
+      *y = 0;
+
+      switch (scale->value_pos)
+	{
+	case GTK_POS_LEFT:
+	  *x += gtk_scale_value_width (scale) + SCALE_CLASS (scale)->value_spacing;
+	  *y = (widget->allocation.height - *h) / 2;
+	  *w -= *x;
+	  break;
+	case GTK_POS_RIGHT:
+	  *w -= gtk_scale_value_width (scale) + SCALE_CLASS (scale)->value_spacing;
+	  *y = (widget->allocation.height - *h) / 2;
+	  break;
+	case GTK_POS_TOP:
+	  *y = (widget->style->font->ascent + widget->style->font->descent +
+		(widget->allocation.height - widget->requisition.height) / 2);
+	  break;
+	case GTK_POS_BOTTOM:
+	  *y = (widget->allocation.height - widget->requisition.height) / 2;
+	  break;
+	}
+    }
+  else
+    {
+      *x = 0;
+      *y = (widget->allocation.height - *h) / 2;
+    }
+  *x += 1;
+  *w -= 2;
+}
+
+static void
+gtk_hscale_draw_slider (GtkRange *range)
+{
+  GtkStateType state_type;
+  gint width, height;
+
+  g_return_if_fail (range != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (range));
+
+  if (range->slider)
+    {
+      if ((range->in_child == RANGE_CLASS (range)->slider) ||
+          (range->click_child == RANGE_CLASS (range)->slider))
+        state_type = GTK_STATE_PRELIGHT;
+      else
+        state_type = GTK_STATE_NORMAL;
+
+      gtk_style_set_background (GTK_WIDGET (range)->style, range->slider, state_type);
+      gdk_window_clear (range->slider);
+
+      gdk_window_get_size (range->slider, &width, &height);
+      gtk_draw_vline (GTK_WIDGET (range)->style, range->slider,
+		      state_type, 1, height - 2, width / 2);
+
+      gtk_draw_shadow (GTK_WIDGET (range)->style, range->slider,
+                       state_type, GTK_SHADOW_OUT,
+                       0, 0, -1, -1);
+    }
+}
+
+static void
+gtk_hscale_draw_value (GtkScale *scale)
+{
+  GtkStateType state_type;
+  gchar buffer[16];
+  gint text_width;
+  gint width, height;
+  gint x, y;
+
+  g_return_if_fail (scale != NULL);
+  g_return_if_fail (GTK_IS_HSCALE (scale));
+
+  if (scale->draw_value)
+    {
+      gdk_window_get_size (GTK_WIDGET (scale)->window, &width, &height);
+      gdk_window_clear_area (GTK_WIDGET (scale)->window, 1, 1, width - 2, height - 2);
+
+      sprintf (buffer, "%0.*f", GTK_RANGE (scale)->digits, GTK_RANGE (scale)->adjustment->value);
+      text_width = gdk_string_measure (GTK_WIDGET (scale)->style->font, buffer);
+
+      switch (scale->value_pos)
+	{
+	case GTK_POS_LEFT:
+	  gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
+	  gdk_window_get_size (GTK_RANGE (scale)->trough, &width, &height);
+
+	  x -= SCALE_CLASS (scale)->value_spacing + text_width;
+	  y += ((height -
+		 (GTK_WIDGET (scale)->style->font->ascent +
+		  GTK_WIDGET (scale)->style->font->descent)) / 2 +
+		GTK_WIDGET (scale)->style->font->ascent);
+	  break;
+	case GTK_POS_RIGHT:
+	  gdk_window_get_position (GTK_RANGE (scale)->trough, &x, &y);
+	  gdk_window_get_size (GTK_RANGE (scale)->trough, &width, &height);
+
+	  x += width + SCALE_CLASS (scale)->value_spacing;
+	  y += ((height -
+		 (GTK_WIDGET (scale)->style->font->ascent +
+		  GTK_WIDGET (scale)->style->font->descent)) / 2 +
+		GTK_WIDGET (scale)->style->font->ascent);
+	  break;
+	case GTK_POS_TOP:
+	  gdk_window_get_position (GTK_RANGE (scale)->slider, &x, NULL);
+	  gdk_window_get_position (GTK_RANGE (scale)->trough, NULL, &y);
+	  gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
+	  gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
+
+	  x += (width - text_width) / 2;
+	  y -= GTK_WIDGET (scale)->style->font->descent;
+	  break;
+	case GTK_POS_BOTTOM:
+	  gdk_window_get_position (GTK_RANGE (scale)->slider, &x, NULL);
+	  gdk_window_get_position (GTK_RANGE (scale)->trough, NULL, &y);
+	  gdk_window_get_size (GTK_RANGE (scale)->slider, &width, NULL);
+	  gdk_window_get_size (GTK_RANGE (scale)->trough, NULL, &height);
+
+	  x += (width - text_width) / 2;
+	  y += height + GTK_WIDGET (scale)->style->font->ascent;
+	  break;
+	}
+
+      state_type = GTK_STATE_NORMAL;
+      if (!GTK_WIDGET_IS_SENSITIVE (scale))
+	state_type = GTK_STATE_INSENSITIVE;
+
+      gtk_draw_string (GTK_WIDGET (scale)->style,
+		       GTK_WIDGET (scale)->window,
+		       state_type, x, y, buffer);
+    }
+}
+
+static gint
+gtk_hscale_trough_keys(GtkRange *range,
+		       GdkEventKey *key,
+		       GtkScrollType *scroll,
+		       GtkTroughType *pos)
+{
+  gint return_val = FALSE;
+  switch (key->keyval)
+    {
+    case GDK_Left:
+      return_val = TRUE;
+      if (key->state & GDK_CONTROL_MASK)
+	*scroll = GTK_SCROLL_PAGE_BACKWARD;
+      else
+	*scroll = GTK_SCROLL_STEP_BACKWARD;
+      break;
+    case GDK_Right:
+      return_val = TRUE;
+      if (key->state & GDK_CONTROL_MASK)
+	*scroll = GTK_SCROLL_PAGE_FORWARD;
+      else
+	*scroll = GTK_SCROLL_STEP_FORWARD;
+      break;
+    case GDK_Home:
+      return_val = TRUE;
+      *pos = GTK_TROUGH_START;
+      break;
+    case GDK_End:
+      return_val = TRUE;
+      *pos = GTK_TROUGH_END;
+      break;
+    }
+  return return_val;
+}