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drawin: Don't unconditionally redraw when made visible

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Before this commit, we always threw away the drawin's cairo surface whenever it
was made visible and thus forced a redraw.

This commit changes this so that we only force a redraw if the drawin was
resized why it wasn't visible. To remember when this happens, we free the
drawin's cairo surface without allocating a new one when the drawin is resized
while not being visible. Thus, we then only have to allocate a new surface if
the drawin doesn't have one when it is being made visible.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2014-03-16 09:11:00 +01:00
parent a82b15d805
commit 346034c6b6
1 changed files with 14 additions and 5 deletions
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19
objects/drawin.c
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@ -92,15 +92,22 @@ drawin_unref_simplified(drawin_t **item)
static void
drawin_update_drawing(drawin_t *w, int widx)
{
/* If this drawin isn't visible, we don't need an up-to-date cairo surface
* for it. (drawin_map() will later make sure we are called again) */
if(!w->visible)
return;
/* Clean up old stuff */
luaA_object_push_item(globalconf.L, widx, w->drawable);
drawable_unset_surface(w->drawable);
if(w->pixmap)
{
xcb_free_pixmap(globalconf.connection, w->pixmap);
w->pixmap = XCB_NONE;
}
/* If this drawin isn't visible, we don't need an up-to-date cairo surface
* for it. (drawin_map() will later make sure we are called again) */
if(!w->visible)
{
lua_pop(globalconf.L, 1);
return;
}
/* Create a pixmap */
xcb_screen_t *s = globalconf.screen;
@ -217,13 +224,15 @@ drawin_map(drawin_t *drawin, int widx)
client_ignore_enterleave_events();
/* Map the drawin */
xcb_map_window(globalconf.connection, drawin->window);
drawin_update_drawing(drawin, widx);
/* Deactivate BMA */
client_restore_enterleave_events();
/* Stack this drawin correctly */
stack_windows();
/* Add it to the list of visible drawins */
drawin_array_append(&globalconf.drawins, drawin);
/* Make sure it has a surface */
if(drawin->drawable->surface == NULL)
drawin_update_drawing(drawin, widx);
}
static void