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GdkWin32: Keep track of the last cursor position in move / resize contexts

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...and avoid doing any work if the position hasn't changed.
This commit is contained in:
Luca Bacci 2023-06-21 15:19:05 +02:00
parent 5dbc5bbf22
commit 412bc1713a
2 changed files with 15 additions and 0 deletions
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9
gdk/win32/gdksurface-win32.c
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@ -3535,6 +3535,8 @@ setup_drag_move_resize_context (GdkSurface *surface,
context->button = button;
context->start_root_x = root_x;
context->start_root_y = root_y;
context->current_root_x = root_x;
context->current_root_y = root_y;
context->timestamp = timestamp;
context->start_rect = rect;
@ -3650,6 +3652,13 @@ gdk_win32_surface_do_move_resize_drag (GdkSurface *window,
if (!_gdk_win32_get_window_rect (window, &rect))
return;
if (context->current_root_x == x &&
context->current_root_y == y)
return;
context->current_root_x = x;
context->current_root_y = y;
new_rect = context->start_rect;
diffx = (x - context->start_root_x) * impl->surface_scale;
diffy = (y - context->start_root_y) * impl->surface_scale;

6
gdk/win32/gdksurface-win32.h
View File

@ -137,6 +137,12 @@ struct _GdkW32DragMoveResizeContext
int start_root_x;
int start_root_y;
/* Last processed cursor position. Values are divided by the window
* scale.
*/
int current_root_x;
int current_root_y;
/* Initial window rectangle (position and size).
* The window is resized/moved relative to this (see start_root_*).
*/