forked from AuroraMiddleware/gtk
28b8bbda45
Moving the initialization of the GdkQuartzMonitors to GdkQuartzDisplay from the now-obsolete GdkQuartzScreen. Use QuartzDisplayServices for monitor enumeration and to populate the GdkMonitor properties. This is better aligned with acting on the Quartz Services callbacks for monitor changes and with Cairo which also uses CoreGraphics for drawing.
423 lines
14 KiB
C
423 lines
14 KiB
C
/* gdkscreen-quartz.c
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*
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* Copyright (C) 2005 Imendio AB
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* Copyright (C) 2009,2010 Kristian Rietveld <kris@gtk.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gdk/gdk.h>
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#include "gdkprivate-quartz.h"
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#include "gdkdisplay-quartz.h"
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#include "gdkmonitor-quartz.h"
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/* A couple of notes about this file are in order. In GDK, a
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* GdkScreen can contain multiple monitors. A GdkScreen has an
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* associated root window, in which the monitors are placed. The
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* root window "spans" all monitors. The origin is at the top-left
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* corner of the root window.
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*
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* Cocoa works differently. The system has a "screen" (NSScreen) for
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* each monitor that is connected (note the conflicting definitions
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* of screen). The screen containing the menu bar is screen 0 and the
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* bottom-left corner of this screen is the origin of the "monitor
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* coordinate space". All other screens are positioned according to this
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* origin. If the menu bar is on a secondary screen (for example on
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* a monitor hooked up to a laptop), then this screen is screen 0 and
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* other monitors will be positioned according to the "secondary screen".
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* The main screen is the monitor that shows the window that is currently
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* active (has focus), the position of the menu bar does not have influence
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* on this!
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*
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* Upon start up and changes in the layout of screens, we calculate the
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* size of the GdkScreen root window that is needed to be able to place
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* all monitors in the root window. Once that size is known, we iterate
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* over the monitors and translate their Cocoa position to a position
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* in the root window of the GdkScreen. This happens below in the
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* function gdk_quartz_screen_calculate_layout().
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*
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* A Cocoa coordinate is always relative to the origin of the monitor
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* coordinate space. Such coordinates are mapped to their respective
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* position in the GdkScreen root window (_gdk_quartz_window_xy_to_gdk_xy)
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* and vice versa (_gdk_quartz_window_gdk_xy_to_xy). Both functions can
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* be found in gdkwindow-quartz.c. Note that Cocoa coordinates can have
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* negative values (in case a monitor is located left or below of screen 0),
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* but GDK coordinates can *not*!
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*/
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static void gdk_quartz_screen_dispose (GObject *object);
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static void gdk_quartz_screen_finalize (GObject *object);
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static void gdk_quartz_screen_calculate_layout (GdkQuartzScreen *screen);
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static void display_reconfiguration_callback (CGDirectDisplayID display,
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CGDisplayChangeSummaryFlags flags,
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void *userInfo);
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static const double dpi = 72.0;
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static gint get_mm_from_pixels (NSScreen *screen, int pixels);
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G_DEFINE_TYPE (GdkQuartzScreen, gdk_quartz_screen, GDK_TYPE_SCREEN);
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static void
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gdk_quartz_screen_init (GdkQuartzScreen *quartz_screen)
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{
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GdkScreen *screen = GDK_SCREEN (quartz_screen);
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/* Screen resolution is used exclusively to pass to Pango for font
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* scaling. There's a long discussion in
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* https://bugzilla.gnome.org/show_bug.cgi?id=787867 exploring how
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* screen resolution and pangocairo-coretext interact. The summary
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* is that MacOS takes care of scaling fonts for Retina screens and
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* that while the Apple Documentation goes on about "points" they're
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* CSS points (96/in), not typeography points (72/in) and
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* pangocairo-coretext needs to default to that scaling factor.
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*/
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_gdk_screen_set_resolution (screen, dpi);
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gdk_quartz_screen_calculate_layout (quartz_screen);
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CGDisplayRegisterReconfigurationCallback (display_reconfiguration_callback,
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screen);
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quartz_screen->emit_monitors_changed = FALSE;
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}
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static void
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gdk_quartz_screen_dispose (GObject *object)
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{
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GdkQuartzScreen *screen = GDK_QUARTZ_SCREEN (object);
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if (screen->screen_changed_id)
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{
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g_source_remove (screen->screen_changed_id);
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screen->screen_changed_id = 0;
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}
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CGDisplayRemoveReconfigurationCallback (display_reconfiguration_callback,
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screen);
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G_OBJECT_CLASS (gdk_quartz_screen_parent_class)->dispose (object);
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}
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static void
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gdk_quartz_screen_finalize (GObject *object)
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{
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G_OBJECT_CLASS (gdk_quartz_screen_parent_class)->finalize (object);
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}
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/* Protocol to build cleanly for OSX < 10.7 */
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@protocol ScaleFactor
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- (CGFloat) backingScaleFactor;
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@end
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static void
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gdk_quartz_screen_calculate_layout (GdkQuartzScreen *screen)
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{
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NSArray *array;
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int i;
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int max_x, max_y;
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GdkDisplay *display = gdk_screen_get_display (GDK_SCREEN (screen));
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GDK_QUARTZ_ALLOC_POOL;
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array = [NSScreen screens];
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screen->width = 0;
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screen->height = 0;
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screen->min_x = 0;
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screen->min_y = 0;
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max_x = max_y = 0;
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/* We determine the minimum and maximum x and y coordinates
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* covered by the monitors. From this we can deduce the width
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* and height of the root screen.
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*/
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for (i = 0; i < [array count]; i++)
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{
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GdkQuartzMonitor *monitor = gdk_display_get_monitor (display, i);
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monitor->monitor_num = i;
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NSRect rect = [[array objectAtIndex:i] frame];
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screen->min_x = MIN (screen->min_x, rect.origin.x);
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max_x = MAX (max_x, rect.origin.x + rect.size.width);
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screen->min_y = MIN (screen->min_y, rect.origin.y);
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max_y = MAX (max_y, rect.origin.y + rect.size.height);
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}
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screen->width = max_x - screen->min_x;
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screen->height = max_y - screen->min_y;
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for (i = 0; i < [array count] ; i++)
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{
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NSScreen *nsscreen;
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NSRect rect;
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GdkMonitor *monitor;
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monitor = gdk_display_get_monitor (display, i);
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nsscreen = [array objectAtIndex:i];
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rect = [nsscreen frame];
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monitor->geometry.x = rect.origin.x - screen->min_x;
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monitor->geometry.y
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= screen->height - (rect.origin.y + rect.size.height) + screen->min_y;
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monitor->geometry.width = rect.size.width;
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monitor->geometry.height = rect.size.height;
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if (gdk_quartz_osx_version() >= GDK_OSX_LION)
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monitor->scale_factor = [(id <ScaleFactor>) nsscreen backingScaleFactor];
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else
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monitor->scale_factor = 1;
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}
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GDK_QUARTZ_RELEASE_POOL;
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}
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void
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_gdk_quartz_screen_update_window_sizes (GdkScreen *screen)
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{
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GList *windows, *list;
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/* The size of the root window is so that it can contain all
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* monitors attached to this machine. The monitors are laid out
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* within this root window. We calculate the size of the root window
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* and the positions of the different monitors in gdkscreen-quartz.c.
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*
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* This data is updated when the monitor configuration is changed.
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*/
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/* FIXME: At some point, fetch the root window from GdkScreen. But
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* on OS X will we only have a single root window anyway.
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*/
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_gdk_root->x = 0;
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_gdk_root->y = 0;
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_gdk_root->abs_x = 0;
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_gdk_root->abs_y = 0;
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_gdk_root->width = gdk_screen_get_width (screen);
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_gdk_root->height = gdk_screen_get_height (screen);
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windows = gdk_screen_get_toplevel_windows (screen);
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for (list = windows; list; list = list->next)
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{
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if (GDK_WINDOW_TYPE(list->data) == GDK_WINDOW_OFFSCREEN)
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continue;
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_gdk_quartz_window_update_position (list->data);
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}
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g_list_free (windows);
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}
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static void
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process_display_reconfiguration (GdkQuartzScreen *screen)
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{
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int width, height;
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width = gdk_screen_get_width (GDK_SCREEN (screen));
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height = gdk_screen_get_height (GDK_SCREEN (screen));
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gdk_quartz_screen_calculate_layout (GDK_QUARTZ_SCREEN (screen));
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_gdk_quartz_screen_update_window_sizes (GDK_SCREEN (screen));
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if (screen->emit_monitors_changed)
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{
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g_signal_emit_by_name (screen, "monitors-changed");
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screen->emit_monitors_changed = FALSE;
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}
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if (width != gdk_screen_get_width (GDK_SCREEN (screen))
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|| height != gdk_screen_get_height (GDK_SCREEN (screen)))
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g_signal_emit_by_name (screen, "size-changed");
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}
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static gboolean
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screen_changed_idle (gpointer data)
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{
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GdkQuartzScreen *screen = data;
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process_display_reconfiguration (data);
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screen->screen_changed_id = 0;
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return FALSE;
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}
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static void
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display_reconfiguration_callback (CGDirectDisplayID display,
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CGDisplayChangeSummaryFlags flags,
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void *userInfo)
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{
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GdkQuartzScreen *screen = userInfo;
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if (flags & kCGDisplayBeginConfigurationFlag)
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{
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/* Ignore the begin configuration signal. */
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return;
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}
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else
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{
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/* We save information about the changes, so we can emit
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* ::monitors-changed when appropriate. This signal must be
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* emitted when the number, size of position of one of the
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* monitors changes.
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*/
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if (flags & kCGDisplayMovedFlag
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|| flags & kCGDisplayAddFlag
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|| flags & kCGDisplayRemoveFlag
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|| flags & kCGDisplayEnabledFlag
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|| flags & kCGDisplayDisabledFlag)
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screen->emit_monitors_changed = TRUE;
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/* At this point Cocoa does not know about the new screen data
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* yet, so we delay our refresh into an idle handler.
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*/
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if (!screen->screen_changed_id)
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{
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screen->screen_changed_id = gdk_threads_add_idle (screen_changed_idle,
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screen);
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g_source_set_name_by_id (screen->screen_changed_id, "[gtk+] screen_changed_idle");
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}
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}
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}
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static GdkDisplay *
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gdk_quartz_screen_get_display (GdkScreen *screen)
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{
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return _gdk_display;
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}
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static GdkWindow *
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gdk_quartz_screen_get_root_window (GdkScreen *screen)
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{
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return _gdk_root;
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}
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static gint
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gdk_quartz_screen_get_number (GdkScreen *screen)
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{
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return 0;
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}
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static gint
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gdk_quartz_screen_get_width (GdkScreen *screen)
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{
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return GDK_QUARTZ_SCREEN (screen)->width;
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}
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static gint
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gdk_quartz_screen_get_height (GdkScreen *screen)
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{
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return GDK_QUARTZ_SCREEN (screen)->height;
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}
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static gint
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get_mm_from_pixels (NSScreen *screen, int pixels)
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{
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const float mm_per_inch = 25.4;
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return (pixels / dpi) * mm_per_inch;
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}
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static gchar *
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gdk_quartz_screen_make_display_name (GdkScreen *screen)
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{
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return g_strdup (gdk_display_get_name (_gdk_display));
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}
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static GdkWindow *
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gdk_quartz_screen_get_active_window (GdkScreen *screen)
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{
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return NULL;
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}
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static GList *
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gdk_quartz_screen_get_window_stack (GdkScreen *screen)
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{
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return NULL;
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}
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static gboolean
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gdk_quartz_screen_is_composited (GdkScreen *screen)
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{
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return TRUE;
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}
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static NSScreen *
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get_nsscreen_for_monitor (gint monitor_num)
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{
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NSArray *array;
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NSScreen *screen;
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GDK_QUARTZ_ALLOC_POOL;
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array = [NSScreen screens];
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screen = [array objectAtIndex:monitor_num];
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GDK_QUARTZ_RELEASE_POOL;
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return screen;
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}
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static gint
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gdk_quartz_screen_get_width_mm (GdkScreen *screen)
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{
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return get_mm_from_pixels (get_nsscreen_for_monitor (0),
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GDK_QUARTZ_SCREEN (screen)->width);
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}
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static gint
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gdk_quartz_screen_get_height_mm (GdkScreen *screen)
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{
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return get_mm_from_pixels (get_nsscreen_for_monitor (0),
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GDK_QUARTZ_SCREEN (screen)->height);
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}
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static void
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gdk_quartz_screen_class_init (GdkQuartzScreenClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GdkScreenClass *screen_class = GDK_SCREEN_CLASS (klass);
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object_class->dispose = gdk_quartz_screen_dispose;
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object_class->finalize = gdk_quartz_screen_finalize;
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screen_class->get_display = gdk_quartz_screen_get_display;
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screen_class->get_width = gdk_quartz_screen_get_width;
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screen_class->get_height = gdk_quartz_screen_get_height;
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screen_class->get_width_mm = gdk_quartz_screen_get_width_mm;
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screen_class->get_height_mm = gdk_quartz_screen_get_height_mm;
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screen_class->get_number = gdk_quartz_screen_get_number;
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screen_class->get_root_window = gdk_quartz_screen_get_root_window;
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screen_class->is_composited = gdk_quartz_screen_is_composited;
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screen_class->make_display_name = gdk_quartz_screen_make_display_name;
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screen_class->get_active_window = gdk_quartz_screen_get_active_window;
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screen_class->get_window_stack = gdk_quartz_screen_get_window_stack;
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screen_class->broadcast_client_message = _gdk_quartz_screen_broadcast_client_message;
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screen_class->get_setting = _gdk_quartz_screen_get_setting;
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screen_class->get_rgba_visual = _gdk_quartz_screen_get_rgba_visual;
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screen_class->get_system_visual = _gdk_quartz_screen_get_system_visual;
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screen_class->visual_get_best_depth = _gdk_quartz_screen_visual_get_best_depth;
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screen_class->visual_get_best_type = _gdk_quartz_screen_visual_get_best_type;
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screen_class->visual_get_best = _gdk_quartz_screen_visual_get_best;
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screen_class->visual_get_best_with_depth = _gdk_quartz_screen_visual_get_best_with_depth;
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screen_class->visual_get_best_with_type = _gdk_quartz_screen_visual_get_best_with_type;
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screen_class->visual_get_best_with_both = _gdk_quartz_screen_visual_get_best_with_both;
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screen_class->query_depths = _gdk_quartz_screen_query_depths;
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screen_class->query_visual_types = _gdk_quartz_screen_query_visual_types;
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screen_class->list_visuals = _gdk_quartz_screen_list_visuals;
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}
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