gtk/gdk/gdkscreenprivate.h
Owen W. Taylor fc6e2cc4b2 Handle resolution changes in the GDK backend code
gdk_x11_display_set_window_scale() affects the interpretation of the
Xft/DPI XSETTING - it is substituted inside GDK with the value of
Gdk/UnscaledDPI xsetting. However, this change is not propagated to
GTK+ and from GTK+ back to gdk_screen_set_resolution() until the
main loop is run.

Fix this by handling the screen resolution directly in gdk/x11.
This requires duplication of code between GDK and GTK+ since we still
have to handle DPI in GTK+ in the case that GdkSettings:gtk-xft-dpi
is set by the application.

https://bugzilla.gnome.org/show_bug.cgi?id=733076
2014-07-13 15:35:23 -04:00

107 lines
4.9 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 2010 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 <http://www.gnu.org/licenses/>.
*/
#ifndef __GDK_SCREEN_PRIVATE_H__
#define __GDK_SCREEN_PRIVATE_H__
#include "gdkscreen.h"
#include "gdkvisual.h"
G_BEGIN_DECLS
#define GDK_SCREEN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_SCREEN, GdkScreenClass))
#define GDK_IS_SCREEN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_SCREEN))
#define GDK_SCREEN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_SCREEN, GdkScreenClass))
typedef struct _GdkScreenClass GdkScreenClass;
struct _GdkScreen
{
GObject parent_instance;
cairo_font_options_t *font_options;
gdouble resolution; /* pixels/points scale factor for fonts */
guint resolution_set : 1; /* resolution set through public API */
guint closed : 1;
};
struct _GdkScreenClass
{
GObjectClass parent_class;
GdkDisplay * (* get_display) (GdkScreen *screen);
gint (* get_width) (GdkScreen *screen);
gint (* get_height) (GdkScreen *screen);
gint (* get_width_mm) (GdkScreen *screen);
gint (* get_height_mm) (GdkScreen *screen);
gint (* get_number) (GdkScreen *screen);
GdkWindow * (* get_root_window) (GdkScreen *screen);
gint (* get_n_monitors) (GdkScreen *screen);
gint (* get_primary_monitor) (GdkScreen *screen);
gint (* get_monitor_width_mm) (GdkScreen *screen,
gint monitor_num);
gint (* get_monitor_height_mm) (GdkScreen *screen,
gint monitor_num);
gchar * (* get_monitor_plug_name) (GdkScreen *screen,
gint monitor_num);
void (* get_monitor_geometry) (GdkScreen *screen,
gint monitor_num,
GdkRectangle *dest);
void (* get_monitor_workarea) (GdkScreen *screen,
gint monitor_num,
GdkRectangle *dest);
GList * (* list_visuals) (GdkScreen *screen);
GdkVisual * (* get_system_visual) (GdkScreen *screen);
GdkVisual * (* get_rgba_visual) (GdkScreen *screen);
gboolean (* is_composited) (GdkScreen *screen);
gchar * (* make_display_name) (GdkScreen *screen);
GdkWindow * (* get_active_window) (GdkScreen *screen);
GList * (* get_window_stack) (GdkScreen *screen);
void (* broadcast_client_message) (GdkScreen *screen,
GdkEvent *event);
gboolean (* get_setting) (GdkScreen *screen,
const gchar *name,
GValue *value);
gint (* visual_get_best_depth) (GdkScreen *screen);
GdkVisualType (* visual_get_best_type) (GdkScreen *screen);
GdkVisual * (* visual_get_best) (GdkScreen *screen);
GdkVisual * (* visual_get_best_with_depth) (GdkScreen *screen,
gint depth);
GdkVisual * (* visual_get_best_with_type) (GdkScreen *screen,
GdkVisualType visual_type);
GdkVisual * (* visual_get_best_with_both) (GdkScreen *screen,
gint depth,
GdkVisualType visual_type);
void (* query_depths) (GdkScreen *screen,
gint **depths,
gint *count);
void (* query_visual_types) (GdkScreen *screen,
GdkVisualType **visual_types,
gint *count);
gint (* get_monitor_scale_factor) (GdkScreen *screen,
gint monitor_num);
/* Signals: */
void (*size_changed) (GdkScreen *screen);
void (*composited_changed) (GdkScreen *screen);
void (*monitors_changed) (GdkScreen *screen);
};
G_END_DECLS
#endif /* __GDK_SCREEN_PRIVATE_H__ */