48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
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diff --git a/gdk/quartz/gdkscreen-quartz.c b/gdk/quartz/gdkscreen-quartz.c
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index e6f0c44e7..3daad2d6e 100644
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--- a/gdk/quartz/gdkscreen-quartz.c
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+++ b/gdk/quartz/gdkscreen-quartz.c
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@@ -83,13 +83,16 @@ _gdk_screen_quartz_init (GdkScreenQuartz *screen_quartz)
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{
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GdkScreen *screen = GDK_SCREEN (screen_quartz);
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NSScreen *nsscreen;
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+ NSDictionary *dd;
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+ NSSize size;
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gdk_screen_set_default_colormap (screen,
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gdk_screen_get_system_colormap (screen));
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nsscreen = [[NSScreen screens] objectAtIndex:0];
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- gdk_screen_set_resolution (screen,
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- 72.0 * [nsscreen userSpaceScaleFactor]);
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+ dd = [nsscreen deviceDescription];
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+ size = [[dd valueForKey:NSDeviceResolution] sizeValue];
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+ gdk_screen_set_resolution (screen, size.width / [nsscreen backingScaleFactor]);
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gdk_screen_quartz_calculate_layout (screen_quartz);
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@@ -357,17 +360,12 @@ gdk_screen_get_height (GdkScreen *screen)
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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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- /* userSpaceScaleFactor is in "pixels per point",
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- * 72 is the number of points per inch,
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- * and 25.4 is the number of millimeters per inch.
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- */
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-#if MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_3
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- float dpi = [screen userSpaceScaleFactor] * 72.0;
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-#else
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- float dpi = 96.0 / 72.0;
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-#endif
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-
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- return (pixels / dpi) * 25.4;
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+ const float mm_per_inch = 25.4;
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+ NSScreen *nsscreen = [[NSScreen screens] objectAtIndex:0];
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+ NSDictionary *dd = [nsscreen deviceDescription];
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+ NSSize size = [[dd valueForKey:NSDeviceResolution] sizeValue];
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+ float dpi = size.width / [nsscreen backingScaleFactor];
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+ return (pixels / dpi) * mm_per_inch;
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}
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static NSScreen *
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