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https://github.com/awesomeWM/awesome
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86f3b7f11f
The X11 server tells us about things that need to be redrawn via expose events. When we get such an expose event before lua drew the drawable, we just fill the exposed area with old data (which is black for newly-created drawables). Fix this by tracking if we have any usable data in a drawable's double buffering pixmap. This flag is unset whenever we throw away the old content (e.g. due to a resize) and is set when lua gave us some new content to display. Signed-off-by: Uli Schlachter <psychon@znc.in>
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* drawable.h - drawable functions header
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*
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* Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
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* Copyright © 2010-2012 Uli Schlachter <psychon@znc.in>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef AWESOME_OBJECTS_DRAWABLE_H
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#define AWESOME_OBJECTS_DRAWABLE_H
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#include "common/luaclass.h"
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#include "globalconf.h"
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typedef void drawable_refresh_callback(void *);
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/** drawable type */
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struct drawable_t
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{
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LUA_OBJECT_HEADER
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/** The pixmap we are drawing to. */
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xcb_pixmap_t pixmap;
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/** Surface for drawing. */
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cairo_surface_t *surface;
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/** The geometry of the drawable (in root window coordinates). */
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area_t geometry;
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/** Surface contents are undefined if this is false. */
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bool refreshed;
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/** Callback for refreshing. */
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drawable_refresh_callback *refresh_callback;
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/** Data for refresh callback. */
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void *refresh_data;
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};
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drawable_t *drawable_allocator(lua_State *, drawable_refresh_callback *, void *);
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void drawable_set_geometry(drawable_t *, int, area_t);
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void drawable_class_setup(lua_State *);
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#endif
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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