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/***************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (directui@nokia.com)
**
** This file is part of mcompositor.
**
** If you have questions regarding the use of this file, please contact
** Nokia at directui@nokia.com.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation
** and appearing in the file LICENSE.LGPL included in the packaging
** of this file.
**
****************************************************************************/
#ifndef MWINDOWPROPERTYCACHE_H
#define MWINDOWPROPERTYCACHE_H
#include <X11/Xutil.h>
#include <X11/Xlib-xcb.h>
#include <xcb/render.h>
#include <xcb/shape.h>
#include <X11/extensions/shape.h>
#include "mcompatoms_p.h"
#include <QRegion>
/*!
* This is a class for caching window property values for a window.
*/
class MWindowPropertyCache
{
public:
/*! Construct a MWindowPropertyCache
* \param window id to the window whose properties are cached
*/
MWindowPropertyCache(Window window,
xcb_get_window_attributes_reply_t *attrs = 0,
xcb_get_geometry_reply_t *geom = 0);
virtual ~MWindowPropertyCache();
Atom windowTypeAtom() const { return window_type_atom; }
void setWindowTypeAtom(Atom atom) { window_type_atom = atom; }
void setRequestedGeometry(const QRect &rect) {
req_geom = rect;
}
const QRect requestedGeometry() const {
return req_geom;
}
// this is called on ConfigureNotify
void setRealGeometry(const QRect &rect) {
if (!xcb_real_geom)
xcb_real_geom = xcb_get_geometry_reply(xcb_conn,
xcb_real_geom_cookie, 0);
real_geom_valid = true;
real_geom = rect;
// shape needs to be refreshed in case it was the default value
// (i.e. the same as geometry), because there is no ShapeNotify
if ((shape_rects_valid && QRegion(real_geom) != shape_region)
|| !shape_rects_valid)
shapeRefresh();
}
const QRect realGeometry() {
if (!xcb_real_geom) {
xcb_real_geom = xcb_get_geometry_reply(xcb_conn,
xcb_real_geom_cookie, 0);
if (xcb_real_geom && !real_geom_valid) {
real_geom = QRect(xcb_real_geom->x, xcb_real_geom->y,
xcb_real_geom->width, xcb_real_geom->height);
real_geom_valid = true;
}
}
return real_geom;
}
const QRegion &shapeRegion();
void shapeRefresh() {
if (!shape_rects_valid)
shapeRegion();
shape_rects_valid = false;
xcb_shape_rects_cookie = xcb_shape_get_rectangles(xcb_conn, window,
ShapeBounding);
}
Window parentWindow() const { return parent_window; }
void setParentWindow(Window w) { parent_window = w; }
/*!
* Returns value of TRANSIENT_FOR property.
*/
Window transientFor();
/*!
* Returns true if we should give focus to this window.
*/
bool wantsFocus();
/*!
* Returns the window group or 0.
*/
XID windowGroup();
/*!
* Returns list of WM_PROTOCOLS of the window.
*/
const QList<Atom>& supportedProtocols();
/*!
* Returns list of _NET_WM_STATE of the window.
*/
const QList<Atom>& netWmState();
// used to set the atom list now, for immediate effect in e.g. stacking
void setNetWmState(const QList<Atom>& s) {
if (!net_wm_state_valid)
// receive the obsolete query
netWmState();
net_wm_state_valid = true;
net_wm_state = s;
}
/*!
* Returns true if this window has received MapRequest but not
* the MapNotify yet.
*/
bool beingMapped() const { return being_mapped; }
void setBeingMapped(bool s) { being_mapped = s; }
bool isMapped() const { return attrs->map_state == XCB_MAP_STATE_VIEWABLE; }
void setIsMapped(bool s) {
// a bit ugly but avoids a round trip to X...
if (s)
attrs->map_state = XCB_MAP_STATE_VIEWABLE;
else
attrs->map_state = XCB_MAP_STATE_UNVIEWABLE;
}
/*!
* Returns the first cardinal of WM_STATE of this window
*/
int windowState();
void setWindowState(int state) { window_state = state; }
/*!
* Returns whether override_redirect flag was in XWindowAttributes at
* object creation time.
*/
bool isOverrideRedirect() const { return attrs->override_redirect; }
const XWMHints &getWMHints();
const xcb_get_window_attributes_reply_t* windowAttributes() const {
return attrs; };
const QRectF &iconGeometry();
const QRect &homeButtonGeometry();
const QRect &closeButtonGeometry();
/*!
* Returns value of _MEEGO_STACKING_LAYER. The value is between [0, 6].
*/
unsigned int meegoStackingLayer();
/*!
* Called on PropertyNotify for this window.
* Returns true if we should re-check stacking order.
*/
bool propertyEvent(XPropertyEvent *e);
MCompAtoms::Type windowType();
bool hasAlpha();
bool isDecorator();
int globalAlpha();
bool is_valid;
static void set_xcb_connection(xcb_connection_t *c) {
MWindowPropertyCache::xcb_conn = c;
}
private:
void buttonGeometryHelper();
Atom window_type_atom;
Window transient_for;
QList<Atom> wm_protocols;
bool wm_protocols_valid;
bool icon_geometry_valid;
bool decor_buttons_valid;
bool shape_rects_valid;
bool real_geom_valid;
bool net_wm_state_valid;
bool wm_state_query;
QRectF icon_geometry;
int has_alpha;
int global_alpha;
int is_decorator;
QList<Atom> net_wm_state;
QRect req_geom, real_geom;
QRect home_button_geom, close_button_geom;
XWMHints *wmhints;
xcb_get_window_attributes_reply_t *attrs;
int meego_layer, window_state;
MCompAtoms::Type window_type;
Window window, parent_window;
bool being_mapped;
// geometry is requested only once in the beginning, after that, we
// use ConfigureNotifys to update the size through setRealGeometry()
xcb_get_geometry_reply_t *xcb_real_geom;
xcb_get_geometry_cookie_t xcb_real_geom_cookie;
xcb_get_property_cookie_t xcb_transient_for_cookie;
xcb_get_property_cookie_t xcb_meego_layer_cookie;
xcb_get_property_cookie_t xcb_is_decorator_cookie;
xcb_get_property_cookie_t xcb_window_type_cookie;
xcb_get_property_cookie_t xcb_decor_buttons_cookie;
xcb_get_property_cookie_t xcb_wm_protocols_cookie;
xcb_get_property_cookie_t xcb_wm_state_cookie;
xcb_get_property_cookie_t xcb_wm_hints_cookie;
xcb_get_property_cookie_t xcb_icon_geom_cookie;
xcb_get_property_cookie_t xcb_global_alpha_cookie;
xcb_get_property_cookie_t xcb_net_wm_state_cookie;
xcb_render_query_pict_formats_cookie_t xcb_pict_formats_cookie;
xcb_shape_get_rectangles_cookie_t xcb_shape_rects_cookie;
QRegion shape_region;
static xcb_connection_t *xcb_conn;
};
#endif
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