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GDK W32: Apply HiDPI scale properly to monitors

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Previously HiDPI scale was retrieved and applied too late in the initialization
process to affect monitor size and monitor workarea size, but the code that
initializes these sizes *did* try to use the scale, even though it was always
getting scale=1.

To fix this, move the too-late code into monitor enumeration routine.
This also fixes a probable semantic bug where width and height were divided
by scale, again.

Now monitor and workarea should be in application pixels (i.e. divided by scale),
as intended.

https://bugzilla.gnome.org/show_bug.cgi?id=778835
This commit is contained in:
Руслан Ижбулатов 2017-02-17 15:59:32 +00:00
parent 27ed9fb11d
commit 3c9b667d3e
2 changed files with 39 additions and 43 deletions
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36
gdk/win32/gdkdisplay-win32.c
View File

@ -199,42 +199,6 @@ _gdk_win32_display_init_monitors (GdkWin32Display *win32_display)
g_ptr_array_insert (win32_display->monitors, 0, primary_to_move);
changed = TRUE;
}
for (i = 0; i < win32_display->monitors->len; i++)
{
GdkMonitor *monitor;
GdkWin32Monitor *win32_monitor;
monitor = GDK_MONITOR (g_ptr_array_index (win32_display->monitors, i));
if (win32_display->has_fixed_scale)
gdk_monitor_set_scale_factor (monitor, win32_display->window_scale);
else
{
/* First acquire the scale using the current screen */
GdkRectangle workarea;
POINT pt;
guint scale = _gdk_win32_display_get_monitor_scale_factor (win32_display, NULL, NULL, NULL);
gdk_monitor_get_workarea (monitor, &workarea);
workarea.x -= _gdk_offset_x;
workarea.y -= _gdk_offset_y;
workarea.x += workarea.width / scale;
workarea.y += workarea.height / scale;
pt.x = workarea.x;
pt.y = workarea.y;
/* acquire the scale using the monitor which the window is nearest on Windows 8.1+ */
if (win32_display->have_at_least_win81)
{
HMONITOR hmonitor = MonitorFromPoint (pt, MONITOR_DEFAULTTONEAREST);
scale = _gdk_win32_display_get_monitor_scale_factor (win32_display, hmonitor, NULL, NULL);
}
gdk_monitor_set_scale_factor (monitor, scale);
}
}
return changed;
}

46
gdk/win32/gdkmonitor-win32.c
View File

@ -33,6 +33,8 @@
#include "config.h"
#include "gdkprivate-win32.h"
#include "gdkdisplay-win32.h"
#include "gdkmonitor-win32.h"
#include <glib.h>
@ -681,7 +683,43 @@ enum_monitor (HMONITOR hmonitor,
/* This is the reason this function exists. This data is not available
* via other functions.
*/
scale = gdk_monitor_get_scale_factor (mon);
rect.x = monitor_info.rcWork.left;
rect.y = monitor_info.rcWork.top;
rect.width = (monitor_info.rcWork.right - monitor_info.rcWork.left);
rect.height = (monitor_info.rcWork.bottom - monitor_info.rcWork.top);
/* This is temporary, scale will be applied below */
w32mon->work_rect = rect;
if (data->display->has_fixed_scale)
scale = data->display->window_scale;
else
{
/* First acquire the scale using the current screen */
scale = _gdk_win32_display_get_monitor_scale_factor (data->display, NULL, NULL, NULL);
/* acquire the scale using the monitor which the window is nearest on Windows 8.1+ */
if (data->display->have_at_least_win81)
{
HMONITOR hmonitor;
POINT pt;
/* Not subtracting _gdk_offset_x and _gdk_offset_y because they will only
* be added later on, in _gdk_win32_display_get_monitor_list().
*/
pt.x = w32mon->work_rect.x + w32mon->work_rect.width / 2;
pt.y = w32mon->work_rect.y + w32mon->work_rect.height / 2;
hmonitor = MonitorFromPoint (pt, MONITOR_DEFAULTTONEAREST);
scale = _gdk_win32_display_get_monitor_scale_factor (data->display, hmonitor, NULL, NULL);
}
}
gdk_monitor_set_scale_factor (mon, scale);
/* Now apply the scale to the work rectangle */
w32mon->work_rect.x /= scale;
w32mon->work_rect.y /= scale;
w32mon->work_rect.width /= scale;
w32mon->work_rect.height /= scale;
rect.x = monitor_info.rcMonitor.left / scale;
rect.y = monitor_info.rcMonitor.top / scale;
rect.width = (monitor_info.rcMonitor.right - monitor_info.rcMonitor.left) / scale;
@ -689,12 +727,6 @@ enum_monitor (HMONITOR hmonitor,
gdk_monitor_set_position (mon, rect.x, rect.y);
gdk_monitor_set_size (mon, rect.width, rect.height);
rect.x = monitor_info.rcWork.left / scale;
rect.y = monitor_info.rcWork.top / scale;
rect.width = (monitor_info.rcWork.right - monitor_info.rcWork.left) / scale;
rect.height = (monitor_info.rcWork.bottom - monitor_info.rcWork.top) / scale;
w32mon->work_rect = rect;
if (monitor_info.dwFlags & MONITORINFOF_PRIMARY && i != 0)
{
/* Put primary monitor at index 0, just in case somebody needs