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Fix saving/restoring TLW position on HiDPI X11 display with GTK+3

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X11 frame extents need to be converted to GTK+ "logical" units
This commit is contained in:
Paul Cornett 2018-04-25 09:19:18 -07:00
parent aaa9670dd1
commit 91919f4514
1 changed files with 11 additions and 5 deletions
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16
src/gtk/toplevel.cpp
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@ -470,7 +470,7 @@ bool wxGetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int*
Atom type;
int format;
gulong nitems, bytes_after;
guchar* data;
guchar* data = NULL;
Status status = XGetWindowProperty(
GDK_DISPLAY_XDISPLAY(display),
GDK_WINDOW_XID(window),
@ -480,11 +480,17 @@ bool wxGetFrameExtents(GdkWindow* window, int* left, int* right, int* top, int*
const bool success = status == Success && data && nitems == 4;
if (success)
{
// We need to convert the X11 physical extents to GTK+ "logical" units
int scale = 1;
#if GTK_CHECK_VERSION(3,10,0)
if (wx_is_at_least_gtk3(10))
scale = gdk_window_get_scale_factor(window);
#endif
long* p = (long*)data;
if (left) *left = int(p[0]);
if (right) *right = int(p[1]);
if (top) *top = int(p[2]);
if (bottom) *bottom = int(p[3]);
if (left) *left = int(p[0]) / scale;
if (right) *right = int(p[1]) / scale;
if (top) *top = int(p[2]) / scale;
if (bottom) *bottom = int(p[3]) / scale;
}
if (data)
XFree(data);