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GdkWin32: Do not clear surface contents when restoring from minimize

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The code does not work anyway since we dropped WS_EX_LAYERED windows.
This commit is contained in:
Luca Bacci
2024-04-06 10:53:46 +02:00
committed by Mat
parent cde8ceae49
commit 64e512054c
1 changed files with 1 additions and 70 deletions
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71
gdk/win32/gdksurface-win32.c
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@@ -4200,82 +4200,13 @@ BOOL WINAPI
GtkShowWindow (GdkSurface *window,
int cmd_show)
{
cairo_t *cr;
cairo_surface_t *surface;
RECT window_rect;
HDC hdc;
POINT window_position;
SIZE window_size;
POINT source_point;
BLENDFUNCTION blender;
HWND hwnd = GDK_SURFACE_HWND (window);
GdkWin32Surface *impl = GDK_WIN32_SURFACE (window);
switch (cmd_show)
{
case SW_FORCEMINIMIZE:
case SW_HIDE:
case SW_MINIMIZE:
break;
case SW_MAXIMIZE:
case SW_RESTORE:
case SW_SHOW:
case SW_SHOWDEFAULT:
case SW_SHOWMINIMIZED:
case SW_SHOWMINNOACTIVE:
case SW_SHOWNA:
case SW_SHOWNOACTIVATE:
case SW_SHOWNORMAL:
if (IsWindowVisible (hwnd))
break;
/* Window was hidden, will be shown. Erase it, GDK will repaint soon,
* but not soon enough, so it's possible to see old content before
* the next redraw, unless we erase the window first.
*/
GetWindowRect (hwnd, &window_rect);
source_point.x = source_point.y = 0;
window_position.x = window_rect.left;
window_position.y = window_rect.top;
window_size.cx = window_rect.right - window_rect.left;
window_size.cy = window_rect.bottom - window_rect.top;
blender.BlendOp = AC_SRC_OVER;
blender.BlendFlags = 0;
blender.AlphaFormat = AC_SRC_ALPHA;
blender.SourceConstantAlpha = 255;
/* Create a surface of appropriate size and clear it */
surface = cairo_win32_surface_create_with_dib (CAIRO_FORMAT_ARGB32,
window_size.cx,
window_size.cy);
cairo_surface_set_device_scale (surface, impl->surface_scale, impl->surface_scale);
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_flush (surface);
hdc = cairo_win32_surface_get_dc (surface);
/* No API_CALL() wrapper, don't check for errors */
UpdateLayeredWindow (hwnd, NULL,
&window_position, &window_size,
hdc, &source_point,
0, &blender, ULW_ALPHA);
cairo_surface_destroy (surface);
break;
}
/* Ensure that maximized window size is corrected later on */
if (cmd_show == SW_MAXIMIZE)
impl->maximizing = TRUE;
return ShowWindow (hwnd, cmd_show);
return ShowWindow (GDK_SURFACE_HWND (window), cmd_show);
}
static void