/* GDK - The GIMP Drawing Kit * 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 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 1997-2005. 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 "gdkwindow.h" #include "gdkinternals.h" #include "gdkwindowimpl.h" #include #include "fallback-c89.c" /* LIMITATIONS: * * Offscreen windows can’t be the child of a foreign window, * nor contain foreign windows * GDK_POINTER_MOTION_HINT_MASK isn't effective */ typedef struct _GdkOffscreenWindow GdkOffscreenWindow; typedef struct _GdkOffscreenWindowClass GdkOffscreenWindowClass; struct _GdkOffscreenWindow { GdkWindowImpl parent_instance; GdkWindow *wrapper; cairo_surface_t *surface; GdkWindow *embedder; }; struct _GdkOffscreenWindowClass { GdkWindowImplClass parent_class; }; #define GDK_TYPE_OFFSCREEN_WINDOW (gdk_offscreen_window_get_type()) #define GDK_OFFSCREEN_WINDOW(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindow)) #define GDK_IS_OFFSCREEN_WINDOW(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_OFFSCREEN_WINDOW)) #define GDK_OFFSCREEN_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindowClass)) #define GDK_IS_OFFSCREEN_WINDOW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_OFFSCREEN_WINDOW)) #define GDK_OFFSCREEN_WINDOW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_OFFSCREEN_WINDOW, GdkOffscreenWindowClass)) static void gdk_offscreen_window_hide (GdkWindow *window); G_DEFINE_TYPE (GdkOffscreenWindow, gdk_offscreen_window, GDK_TYPE_WINDOW_IMPL) static void gdk_offscreen_window_finalize (GObject *object) { GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (object); if (offscreen->surface) cairo_surface_destroy (offscreen->surface); G_OBJECT_CLASS (gdk_offscreen_window_parent_class)->finalize (object); } static void gdk_offscreen_window_init (GdkOffscreenWindow *window) { } static void gdk_offscreen_window_destroy (GdkWindow *window, gboolean recursing, gboolean foreign_destroy) { gdk_offscreen_window_set_embedder (window, NULL); if (!recursing) gdk_offscreen_window_hide (window); } static cairo_surface_t * get_surface (GdkOffscreenWindow *offscreen) { if (! offscreen->surface) { GdkWindow *window = offscreen->wrapper; g_signal_emit_by_name (window, "create-surface", window->width, window->height, &offscreen->surface); } return offscreen->surface; } static gboolean is_parent_of (GdkWindow *parent, GdkWindow *child) { GdkWindow *w; w = child; while (w != NULL) { if (w == parent) return TRUE; w = gdk_window_get_parent (w); } return FALSE; } static cairo_surface_t * gdk_offscreen_window_ref_cairo_surface (GdkWindow *window) { GdkOffscreenWindow *offscreen = GDK_OFFSCREEN_WINDOW (window->impl); return cairo_surface_reference (get_surface (offscreen)); } cairo_surface_t * _gdk_offscreen_window_create_surface (GdkWindow *offscreen, gint width, gint height) { g_return_val_if_fail (GDK_IS_OFFSCREEN_WINDOW (offscreen->impl), NULL); return gdk_window_create_similar_surface (offscreen->parent, CAIRO_CONTENT_COLOR_ALPHA, width, height); } void _gdk_offscreen_window_new (GdkWindow *window, GdkWindowAttr *attributes, gint attributes_mask) { GdkOffscreenWindow *offscreen; g_return_if_fail (attributes != NULL); if (attributes->wclass != GDK_INPUT_OUTPUT) return; /* Can't support input only offscreens */ if (window->parent != NULL && GDK_WINDOW_DESTROYED (window->parent)) return; window->impl = g_object_new (GDK_TYPE_OFFSCREEN_WINDOW, NULL); offscreen = GDK_OFFSCREEN_WINDOW (window->impl); offscreen->wrapper = window; } static gboolean gdk_offscreen_window_reparent (GdkWindow *window, GdkWindow *new_parent, gint x, gint y) { GdkWindow *old_parent; gboolean was_mapped; if (new_parent) { /* No input-output children of input-only windows */ if (new_parent->input_only && !window->input_only) return FALSE; /* Don't create loops in hierarchy */ if (is_parent_of (window, new_parent)) return FALSE; } was_mapped = GDK_WINDOW_IS_MAPPED (window); gdk_window_hide (window); if (window->parent) window->parent->children = g_list_remove (window->parent->children, window); old_parent = window->parent; window->parent = new_parent; window->x = x; window->y = y; if (new_parent) window->parent->children = g_list_prepend (window->parent->children, window); _gdk_synthesize_crossing_events_for_geometry_change (window); if (old_parent) _gdk_synthesize_crossing_events_for_geometry_change (old_parent); return was_mapped; } static void gdk_offscreen_window_set_device_cursor (GdkWindow *window, GdkDevice *device, GdkCursor *cursor) { } static void from_embedder (GdkWindow *window, double embedder_x, double embedder_y, double *offscreen_x, double *offscreen_y) { g_signal_emit_by_name (window->impl_window, "from-embedder", embedder_x, embedder_y, offscreen_x, offscreen_y, NULL); } static void to_embedder (GdkWindow *window, double offscreen_x, double offscreen_y, double *embedder_x, double *embedder_y) { g_signal_emit_by_name (window->impl_window, "to-embedder", offscreen_x, offscreen_y, embedder_x, embedder_y, NULL); } static void gdk_offscreen_window_get_root_coords (GdkWindow *window, gint x, gint y, gint *root_x, gint *root_y) { GdkOffscreenWindow *offscreen; int tmpx, tmpy; tmpx = x; tmpy = y; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); if (offscreen->embedder) { double dx, dy; to_embedder (window, x, y, &dx, &dy); tmpx = floor (dx + 0.5); tmpy = floor (dy + 0.5); gdk_window_get_root_coords (offscreen->embedder, tmpx, tmpy, &tmpx, &tmpy); } if (root_x) *root_x = tmpx; if (root_y) *root_y = tmpy; } static gboolean gdk_offscreen_window_get_device_state (GdkWindow *window, GdkDevice *device, gdouble *x, gdouble *y, GdkModifierType *mask) { GdkOffscreenWindow *offscreen; double tmpx, tmpy; double dtmpx, dtmpy; GdkModifierType tmpmask; tmpx = 0; tmpy = 0; tmpmask = 0; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); if (offscreen->embedder != NULL) { gdk_window_get_device_position_double (offscreen->embedder, device, &tmpx, &tmpy, &tmpmask); from_embedder (window, tmpx, tmpy, &dtmpx, &dtmpy); tmpx = dtmpx; tmpy = dtmpy; } if (x) *x = round (tmpx); if (y) *y = round (tmpy); if (mask) *mask = tmpmask; return TRUE; } /** * gdk_offscreen_window_get_surface: * @window: a #GdkWindow * * Gets the offscreen surface that an offscreen window renders into. * If you need to keep this around over window resizes, you need to * add a reference to it. * * Returns: (nullable) (transfer none): The offscreen surface, or * %NULL if not offscreen */ cairo_surface_t * gdk_offscreen_window_get_surface (GdkWindow *window) { GdkOffscreenWindow *offscreen; g_return_val_if_fail (GDK_IS_WINDOW (window), FALSE); if (!GDK_IS_OFFSCREEN_WINDOW (window->impl)) return NULL; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); return get_surface (offscreen); } static void gdk_offscreen_window_raise (GdkWindow *window) { /* gdk_window_raise already changed the stacking order */ _gdk_synthesize_crossing_events_for_geometry_change (window); } static void gdk_offscreen_window_lower (GdkWindow *window) { /* gdk_window_lower already changed the stacking order */ _gdk_synthesize_crossing_events_for_geometry_change (window); } static void gdk_offscreen_window_move_resize_internal (GdkWindow *window, gint x, gint y, gint width, gint height, gboolean send_expose_events) { GdkOffscreenWindow *offscreen; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); if (width < 1) width = 1; if (height < 1) height = 1; if (window->destroyed) return; window->x = x; window->y = y; if (window->width != width || window->height != height) { window->width = width; window->height = height; if (offscreen->surface) { cairo_surface_t *old_surface; cairo_t *cr; old_surface = offscreen->surface; offscreen->surface = NULL; offscreen->surface = get_surface (offscreen); cr = cairo_create (offscreen->surface); cairo_set_source_surface (cr, old_surface, 0, 0); cairo_paint (cr); cairo_destroy (cr); cairo_surface_destroy (old_surface); } } if (GDK_WINDOW_IS_MAPPED (window)) { /* TODO: Only invalidate new area, i.e. for larger windows */ gdk_window_invalidate_rect (window, NULL, TRUE); _gdk_synthesize_crossing_events_for_geometry_change (window); } } static void gdk_offscreen_window_move_resize (GdkWindow *window, gboolean with_move, gint x, gint y, gint width, gint height) { if (!with_move) { x = window->x; y = window->y; } if (width < 0) width = window->width; if (height < 0) height = window->height; gdk_offscreen_window_move_resize_internal (window, x, y, width, height, TRUE); } static void gdk_offscreen_window_show (GdkWindow *window, gboolean already_mapped) { GdkRectangle area = { 0, 0, window->width, window->height }; gdk_window_invalidate_rect (window, &area, FALSE); } static void gdk_offscreen_window_hide (GdkWindow *window) { /* TODO: This needs updating to the new grab world */ #if 0 GdkOffscreenWindow *offscreen; GdkDisplay *display; g_return_if_fail (window != NULL); offscreen = GDK_OFFSCREEN_WINDOW (window->impl); /* May need to break grabs on children */ display = gdk_window_get_display (window); if (display->pointer_grab.window != NULL) { if (is_parent_of (window, display->pointer_grab.window)) { /* Call this ourselves, even though gdk_display_pointer_ungrab does so too, since we want to pass implicit == TRUE so the broken grab event is generated */ _gdk_display_unset_has_pointer_grab (display, TRUE, FALSE, GDK_CURRENT_TIME); gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME); } } #endif } static void gdk_offscreen_window_withdraw (GdkWindow *window) { } static GdkEventMask gdk_offscreen_window_get_events (GdkWindow *window) { return 0; } static void gdk_offscreen_window_set_events (GdkWindow *window, GdkEventMask event_mask) { } static void gdk_offscreen_window_set_background (GdkWindow *window, cairo_pattern_t *pattern) { } static void gdk_offscreen_window_shape_combine_region (GdkWindow *window, const cairo_region_t *shape_region, gint offset_x, gint offset_y) { } static void gdk_offscreen_window_input_shape_combine_region (GdkWindow *window, const cairo_region_t *shape_region, gint offset_x, gint offset_y) { } static gboolean gdk_offscreen_window_set_static_gravities (GdkWindow *window, gboolean use_static) { return TRUE; } static void gdk_offscreen_window_get_geometry (GdkWindow *window, gint *x, gint *y, gint *width, gint *height) { if (!GDK_WINDOW_DESTROYED (window)) { if (x) *x = window->x; if (y) *y = window->y; if (width) *width = window->width; if (height) *height = window->height; } } static gboolean gdk_offscreen_window_queue_antiexpose (GdkWindow *window, cairo_region_t *area) { return FALSE; } static gboolean gdk_offscreen_window_resize_cairo_surface (GdkWindow *window, cairo_surface_t *surface, gint width, gint height) { /* No-op. The surface gets resized in * gdk_offscreen_window_move_resize_internal(). */ return TRUE; } /** * gdk_offscreen_window_set_embedder: * @window: a #GdkWindow * @embedder: the #GdkWindow that @window gets embedded in * * Sets @window to be embedded in @embedder. * * To fully embed an offscreen window, in addition to calling this * function, it is also necessary to handle the #GdkWindow::pick-embedded-child * signal on the @embedder and the #GdkWindow::to-embedder and * #GdkWindow::from-embedder signals on @window. * * Since: 2.18 */ void gdk_offscreen_window_set_embedder (GdkWindow *window, GdkWindow *embedder) { GdkOffscreenWindow *offscreen; g_return_if_fail (GDK_IS_WINDOW (window)); if (!GDK_IS_OFFSCREEN_WINDOW (window->impl)) return; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); if (embedder) { g_object_ref (embedder); embedder->num_offscreen_children++; } if (offscreen->embedder) { g_object_unref (offscreen->embedder); offscreen->embedder->num_offscreen_children--; } offscreen->embedder = embedder; } /** * gdk_offscreen_window_get_embedder: * @window: a #GdkWindow * * Gets the window that @window is embedded in. * * Returns: (nullable) (transfer none): the embedding #GdkWindow, or * %NULL if @window is not an mbedded offscreen window * * Since: 2.18 */ GdkWindow * gdk_offscreen_window_get_embedder (GdkWindow *window) { GdkOffscreenWindow *offscreen; g_return_val_if_fail (GDK_IS_WINDOW (window), NULL); if (!GDK_IS_OFFSCREEN_WINDOW (window->impl)) return NULL; offscreen = GDK_OFFSCREEN_WINDOW (window->impl); return offscreen->embedder; } static void gdk_offscreen_window_do_nothing (GdkWindow *window) { } static void gdk_offscreen_window_set_boolean (GdkWindow *window, gboolean setting) { } static void gdk_offscreen_window_set_string (GdkWindow *window, const gchar *setting) { } static void gdk_offscreen_window_set_list (GdkWindow *window, GList *list) { } static void gdk_offscreen_window_set_wmfunctions (GdkWindow *window, GdkWMFunction functions) { } static void gdk_offscreen_window_set_transient_for (GdkWindow *window, GdkWindow *another) { } static void gdk_offscreen_window_process_updates_recurse (GdkWindow *window, cairo_region_t *region) { _gdk_window_process_updates_recurse (window, region); } static void gdk_offscreen_window_get_frame_extents (GdkWindow *window, GdkRectangle *rect) { rect->x = window->x; rect->y = window->y; rect->width = window->width; rect->height = window->height; } static gint gdk_offscreen_window_get_scale_factor (GdkWindow *window) { if (GDK_WINDOW_DESTROYED (window)) return 1; return gdk_window_get_scale_factor (window->parent); } static void gdk_offscreen_window_set_opacity (GdkWindow *window, gdouble opacity) { } static void gdk_offscreen_window_class_init (GdkOffscreenWindowClass *klass) { GdkWindowImplClass *impl_class = GDK_WINDOW_IMPL_CLASS (klass); GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = gdk_offscreen_window_finalize; impl_class->ref_cairo_surface = gdk_offscreen_window_ref_cairo_surface; impl_class->show = gdk_offscreen_window_show; impl_class->hide = gdk_offscreen_window_hide; impl_class->withdraw = gdk_offscreen_window_withdraw; impl_class->set_events = gdk_offscreen_window_set_events; impl_class->get_events = gdk_offscreen_window_get_events; impl_class->raise = gdk_offscreen_window_raise; impl_class->lower = gdk_offscreen_window_lower; impl_class->restack_under = NULL; impl_class->restack_toplevel = NULL; impl_class->move_resize = gdk_offscreen_window_move_resize; impl_class->set_background = gdk_offscreen_window_set_background; impl_class->reparent = gdk_offscreen_window_reparent; impl_class->set_device_cursor = gdk_offscreen_window_set_device_cursor; impl_class->get_geometry = gdk_offscreen_window_get_geometry; impl_class->get_root_coords = gdk_offscreen_window_get_root_coords; impl_class->get_device_state = gdk_offscreen_window_get_device_state; impl_class->shape_combine_region = gdk_offscreen_window_shape_combine_region; impl_class->input_shape_combine_region = gdk_offscreen_window_input_shape_combine_region; impl_class->set_static_gravities = gdk_offscreen_window_set_static_gravities; impl_class->queue_antiexpose = gdk_offscreen_window_queue_antiexpose; impl_class->destroy = gdk_offscreen_window_destroy; impl_class->destroy_foreign = NULL; impl_class->resize_cairo_surface = gdk_offscreen_window_resize_cairo_surface; impl_class->get_shape = NULL; impl_class->get_input_shape = NULL; impl_class->beep = NULL; impl_class->focus = NULL; impl_class->set_type_hint = NULL; impl_class->get_type_hint = NULL; impl_class->set_modal_hint = NULL; impl_class->set_skip_taskbar_hint = gdk_offscreen_window_set_boolean; impl_class->set_skip_pager_hint = gdk_offscreen_window_set_boolean; impl_class->set_urgency_hint = gdk_offscreen_window_set_boolean; impl_class->set_geometry_hints = NULL; impl_class->set_title = gdk_offscreen_window_set_string; impl_class->set_role = gdk_offscreen_window_set_string; impl_class->set_startup_id = gdk_offscreen_window_set_string; impl_class->set_transient_for = gdk_offscreen_window_set_transient_for; impl_class->get_frame_extents = gdk_offscreen_window_get_frame_extents; impl_class->set_override_redirect = NULL; impl_class->set_accept_focus = NULL; impl_class->set_focus_on_map = gdk_offscreen_window_set_boolean; impl_class->set_icon_list = gdk_offscreen_window_set_list; impl_class->set_icon_name = gdk_offscreen_window_set_string; impl_class->iconify = gdk_offscreen_window_do_nothing; impl_class->deiconify = gdk_offscreen_window_do_nothing; impl_class->stick = gdk_offscreen_window_do_nothing; impl_class->unstick = gdk_offscreen_window_do_nothing; impl_class->maximize = gdk_offscreen_window_do_nothing; impl_class->unmaximize = gdk_offscreen_window_do_nothing; impl_class->fullscreen = gdk_offscreen_window_do_nothing; impl_class->unfullscreen = gdk_offscreen_window_do_nothing; impl_class->set_keep_above = gdk_offscreen_window_set_boolean; impl_class->set_keep_below = gdk_offscreen_window_set_boolean; impl_class->get_group = NULL; impl_class->set_group = NULL; impl_class->set_decorations = NULL; impl_class->get_decorations = NULL; impl_class->set_functions = gdk_offscreen_window_set_wmfunctions; impl_class->begin_resize_drag = NULL; impl_class->begin_move_drag = NULL; impl_class->enable_synchronized_configure = gdk_offscreen_window_do_nothing; impl_class->configure_finished = NULL; impl_class->set_opacity = gdk_offscreen_window_set_opacity; impl_class->set_composited = NULL; impl_class->destroy_notify = NULL; impl_class->register_dnd = gdk_offscreen_window_do_nothing; impl_class->drag_begin = NULL; impl_class->process_updates_recurse = gdk_offscreen_window_process_updates_recurse; impl_class->sync_rendering = NULL; impl_class->simulate_key = NULL; impl_class->simulate_button = NULL; impl_class->get_property = NULL; impl_class->change_property = NULL; impl_class->delete_property = NULL; impl_class->get_scale_factor = gdk_offscreen_window_get_scale_factor; }