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Simplify the frame testing logic in callers to grab borders

Browse Source 
A lot of code did something similar to:

  MetaFrameBorders borders;

  if (window->frame)
    meta_frame_calc_borders (window->frame, &borders);
  else
    meta_frame_borders_clear (&borders);

Sometimes, the else part was omitted and we were unknowingly using
uninitalized values for OR windows. Clean this up by just testing
for a NULL frame in meta_frame_calc_borders and clearing for the
caller if so.

https://bugzilla.gnome.org/show_bug.cgi?id=643606
This commit is contained in:
Jasper St. Pierre 2012-03-12 23:11:07 -04:00
parent 578b1c06c7
commit 8c1b2d5eda
4 changed files with 53 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
src/compositor/meta-window-actor.c
View File

@ -1616,24 +1616,16 @@ meta_window_actor_update_bounding_region_and_borders (MetaWindowActor *self,
int height)
{
MetaWindowActorPrivate *priv = self->priv;
MetaFrame *frame;
MetaFrameBorders borders;
cairo_rectangle_int_t bounding_rectangle;
bounding_rectangle.x = 0;
bounding_rectangle.y = 0;
frame = priv->window->frame;
if (frame != NULL)
{
meta_frame_calc_borders (frame, &borders);
meta_frame_calc_borders (priv->window->frame, &borders);
bounding_rectangle.x = borders.invisible.left;
bounding_rectangle.y = borders.invisible.top;
width -= borders.invisible.left + borders.invisible.right;
height -= borders.invisible.top + borders.invisible.bottom;
}
bounding_rectangle.width = width;
bounding_rectangle.height = height;
@ -2163,10 +2155,7 @@ check_needs_reshape (MetaWindowActor *self)
meta_shaped_texture_set_shape_region (META_SHAPED_TEXTURE (priv->actor), NULL);
meta_window_actor_clear_shape_region (self);
if (priv->window->frame)
meta_frame_calc_borders (priv->window->frame, &borders);
else
meta_frame_borders_clear (&borders);
region = meta_window_get_frame_bounds (priv->window);
if (region != NULL)

2
src/core/constraints.c
View File

@ -573,7 +573,7 @@ place_window_if_needed(MetaWindow *window,
META_MAXIMIZE_VERTICAL : 0), &info->current);
/* maximization may have changed frame geometry */
if (window->frame && !window->fullscreen)
if (!window->fullscreen)
meta_frame_calc_borders (window->frame, info->borders);
if (window->fullscreen_after_placement)

5
src/core/frame.c
View File

@ -322,6 +322,11 @@ void
meta_frame_calc_borders (MetaFrame *frame,
MetaFrameBorders *borders)
{
/* Save on if statements and potential uninitialized values
* in callers -- if there's no frame, then zero the borders. */
if (frame == NULL)
meta_frame_borders_clear (borders);
else
meta_ui_get_frame_borders (frame->window->screen->ui,
frame->xwindow,
borders);

24
src/core/window.c
View File

@ -3704,6 +3704,7 @@ meta_window_can_tile_side_by_side (MetaWindow *window)
{
const MetaMonitorInfo *monitor;
MetaRectangle tile_area;
MetaFrameBorders borders;
if (!meta_window_can_tile_maximized (window))
return FALSE;
@ -3717,15 +3718,10 @@ meta_window_can_tile_side_by_side (MetaWindow *window)
tile_area.width /= 2;
if (window->frame)
{
MetaFrameBorders borders;
meta_frame_calc_borders (window->frame, &borders);
tile_area.width -= (borders.visible.left + borders.visible.right);
tile_area.height -= (borders.visible.top + borders.visible.bottom);
}
return tile_area.width >= window->size_hints.min_width &&
tile_area.height >= window->size_hints.min_height;
@ -4646,7 +4642,6 @@ meta_window_move_resize_internal (MetaWindow *window,
is_user_action ? " (user move/resize)" : "",
old_rect.x, old_rect.y, old_rect.width, old_rect.height);
if (window->frame)
meta_frame_calc_borders (window->frame,
&borders);
@ -5109,10 +5104,8 @@ meta_window_move_frame (MetaWindow *window,
{
int x = root_x_nw;
int y = root_y_nw;
if (window->frame)
{
MetaFrameBorders borders;
meta_frame_calc_borders (window->frame, &borders);
/* root_x_nw and root_y_nw correspond to where the top of
@ -5122,7 +5115,7 @@ meta_window_move_frame (MetaWindow *window,
*/
x += window->frame->child_x - borders.invisible.left;
y += window->frame->child_y - borders.invisible.top;
}
meta_window_move (window, user_op, x, y);
}
@ -5170,10 +5163,9 @@ meta_window_move_resize_frame (MetaWindow *window,
int root_y_nw,
int w,
int h)
{
if (window->frame)
{
MetaFrameBorders borders;
meta_frame_calc_borders (window->frame, &borders);
/* offset by the distance between the origin of the window
* and the origin of the enclosing window decorations ( + border)
@ -5182,7 +5174,7 @@ meta_window_move_resize_frame (MetaWindow *window,
root_y_nw += borders.visible.top;
w -= borders.visible.left + borders.visible.right;
h -= borders.visible.top + borders.visible.bottom;
}
meta_window_move_resize (window, user_op, root_x_nw, root_y_nw, w, h);
}
@ -5814,10 +5806,7 @@ meta_window_get_net_wm_desktop (MetaWindow *window)
static void
update_net_frame_extents (MetaWindow *window)
{
unsigned long data[4] = { 0, 0, 0, 0 };
if (window->frame)
{
unsigned long data[4];
MetaFrameBorders borders;
meta_frame_calc_borders (window->frame, &borders);
@ -5829,7 +5818,6 @@ update_net_frame_extents (MetaWindow *window)
data[2] = borders.visible.top;
/* Bottom */
data[3] = borders.visible.bottom;
}
meta_topic (META_DEBUG_GEOMETRY,
"Setting _NET_FRAME_EXTENTS on managed window 0x%lx "