You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
357 lines
9.4 KiB
357 lines
9.4 KiB
/****************************************************************************
|
|
**
|
|
** Implementation of TQDesktopWidget class.
|
|
**
|
|
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of the kernel module of the TQt GUI Toolkit.
|
|
**
|
|
** This file may be used under the terms of the GNU General
|
|
** Public License versions 2.0 or 3.0 as published by the Free
|
|
** Software Foundation and appearing in the files LICENSE.GPL2
|
|
** and LICENSE.GPL3 included in the packaging of this file.
|
|
** Alternatively you may (at your option) use any later version
|
|
** of the GNU General Public License if such license has been
|
|
** publicly approved by Trolltech ASA (or its successors, if any)
|
|
** and the KDE Free TQt Foundation.
|
|
**
|
|
** Please review the following information to ensure GNU General
|
|
** Public Licensing requirements will be met:
|
|
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
|
|
** If you are unsure which license is appropriate for your use, please
|
|
** review the following information:
|
|
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
|
|
** or contact the sales department at sales@trolltech.com.
|
|
**
|
|
** This file may be used under the terms of the Q Public License as
|
|
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
|
|
** included in the packaging of this file. Licensees holding valid TQt
|
|
** Commercial licenses may use this file in accordance with the TQt
|
|
** Commercial License Agreement provided with the Software.
|
|
**
|
|
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
|
|
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
|
|
** herein.
|
|
**
|
|
**********************************************************************/
|
|
|
|
#include "ntqdesktopwidget.h"
|
|
#include "ntqapplication.h"
|
|
#include "ntqobjectlist.h"
|
|
#include "qt_x11_p.h"
|
|
#include <cstdlib>
|
|
|
|
// defined in qwidget_x11.cpp
|
|
extern int qt_x11_create_desktop_on_screen;
|
|
|
|
// defined in qapplication_x11.cpp
|
|
extern Atom qt_net_workarea;
|
|
extern bool qt_net_supports(Atom atom);
|
|
|
|
// function to update the workarea of the screen
|
|
static bool qt_desktopwidget_workarea_dirty = TRUE;
|
|
void qt_desktopwidget_update_workarea()
|
|
{
|
|
qt_desktopwidget_workarea_dirty = TRUE;
|
|
}
|
|
|
|
|
|
class TQSingleDesktopWidget : public TQWidget
|
|
{
|
|
public:
|
|
TQSingleDesktopWidget();
|
|
~TQSingleDesktopWidget();
|
|
};
|
|
|
|
TQSingleDesktopWidget::TQSingleDesktopWidget()
|
|
: TQWidget( 0, "desktop", WType_Desktop )
|
|
{
|
|
}
|
|
|
|
TQSingleDesktopWidget::~TQSingleDesktopWidget()
|
|
{
|
|
while ( children() )
|
|
removeChild( children()->getFirst() );
|
|
}
|
|
|
|
|
|
class TQDesktopWidgetPrivate
|
|
{
|
|
public:
|
|
TQDesktopWidgetPrivate();
|
|
~TQDesktopWidgetPrivate();
|
|
|
|
void init();
|
|
|
|
bool use_xinerama;
|
|
int defaultScreen;
|
|
int screenCount;
|
|
|
|
TQWidget **screens;
|
|
TQRect *rects;
|
|
TQRect *workareas;
|
|
};
|
|
|
|
TQDesktopWidgetPrivate::TQDesktopWidgetPrivate()
|
|
: use_xinerama(FALSE), defaultScreen(0), screenCount(1),
|
|
screens( 0 ), rects( 0 ), workareas( 0 )
|
|
{
|
|
}
|
|
|
|
TQDesktopWidgetPrivate::~TQDesktopWidgetPrivate()
|
|
{
|
|
if ( screens ) {
|
|
for ( int i = 0; i < screenCount; ++i ) {
|
|
if (i == defaultScreen) continue;
|
|
delete screens[i];
|
|
screens[i] = 0;
|
|
}
|
|
|
|
free(screens);
|
|
}
|
|
|
|
if ( rects ) delete [] rects;
|
|
if ( workareas ) delete [] workareas;
|
|
}
|
|
|
|
void TQDesktopWidgetPrivate::init()
|
|
{
|
|
// get the screen count
|
|
int newScreenCount;
|
|
|
|
#ifndef QT_NO_XINERAMA
|
|
XineramaScreenInfo *xinerama_screeninfo = 0;
|
|
int unused;
|
|
use_xinerama = (XineramaQueryExtension(TQPaintDevice::x11AppDisplay(),
|
|
&unused, &unused) &&
|
|
XineramaIsActive(TQPaintDevice::x11AppDisplay()));
|
|
|
|
if (use_xinerama) {
|
|
xinerama_screeninfo =
|
|
XineramaQueryScreens(TQPaintDevice::x11AppDisplay(), &newScreenCount);
|
|
|
|
if (xinerama_screeninfo)
|
|
defaultScreen = 0;
|
|
} else
|
|
#endif // QT_NO_XINERAMA
|
|
{
|
|
defaultScreen = DefaultScreen(TQPaintDevice::x11AppDisplay());
|
|
newScreenCount = ScreenCount(TQPaintDevice::x11AppDisplay());
|
|
use_xinerama = false;
|
|
}
|
|
|
|
delete [] rects;
|
|
rects = new TQRect[ newScreenCount ];
|
|
delete [] workareas;
|
|
workareas = new TQRect[ newScreenCount ];
|
|
|
|
// get the geometry of each screen
|
|
int i, j, x, y, w, h;
|
|
for ( i = 0, j = 0; i < newScreenCount; i++ ) {
|
|
|
|
#ifndef QT_NO_XINERAMA
|
|
if (use_xinerama) {
|
|
x = xinerama_screeninfo[i].x_org;
|
|
y = xinerama_screeninfo[i].y_org;
|
|
w = xinerama_screeninfo[i].width;
|
|
h = xinerama_screeninfo[i].height;
|
|
} else
|
|
#endif // QT_NO_XINERAMA
|
|
{
|
|
x = 0;
|
|
y = 0;
|
|
w = WidthOfScreen(ScreenOfDisplay(TQPaintDevice::x11AppDisplay(), i));
|
|
h = HeightOfScreen(ScreenOfDisplay(TQPaintDevice::x11AppDisplay(), i));
|
|
}
|
|
|
|
workareas[i] = TQRect();
|
|
rects[j].setRect(x, y, w, h);
|
|
|
|
// overlapping?
|
|
if (j > 0 && rects[j-1].intersects(rects[j])) {
|
|
// pick the bigger one, ignore the other
|
|
if ((rects[j].width()*rects[j].height()) >
|
|
(rects[j-1].width()*rects[j-1].height()))
|
|
rects[j-1] = rects[j];
|
|
}
|
|
else
|
|
j++;
|
|
}
|
|
|
|
if (screens) {
|
|
// leaks TQWidget* pointers on purpose, can't delete them as pointer escapes
|
|
screens = (TQWidget**) realloc(screens, j * sizeof(TQWidget*));
|
|
if (j > screenCount)
|
|
memset(&screens[screenCount], 0, (j-screenCount) * sizeof(TQWidget*));
|
|
}
|
|
|
|
screenCount = j;
|
|
|
|
#ifndef QT_NO_XINERAMA
|
|
if (use_xinerama && screenCount == 1)
|
|
use_xinerama = false;
|
|
|
|
if (xinerama_screeninfo)
|
|
XFree(xinerama_screeninfo);
|
|
#endif // QT_NO_XINERAMA
|
|
|
|
}
|
|
|
|
// the TQDesktopWidget itself will be created on the default screen
|
|
// as qt_x11_create_desktop_on_screen defaults to -1
|
|
TQDesktopWidget::TQDesktopWidget()
|
|
: TQWidget( 0, "desktop", WType_Desktop )
|
|
{
|
|
d = new TQDesktopWidgetPrivate();
|
|
|
|
/*
|
|
we don't call d->init() here, since the initial resize event
|
|
will end up calling init() a second time, which is inefficient.
|
|
instead, for the sending of all posted event to the desktop
|
|
widget (including the initial resize event, which calls
|
|
d->init()).
|
|
*/
|
|
TQApplication::sendPostedEvents( this, 0 );
|
|
}
|
|
|
|
TQDesktopWidget::~TQDesktopWidget()
|
|
{
|
|
delete d;
|
|
}
|
|
|
|
bool TQDesktopWidget::isVirtualDesktop() const
|
|
{
|
|
return d->use_xinerama;
|
|
}
|
|
|
|
int TQDesktopWidget::primaryScreen() const
|
|
{
|
|
return d->defaultScreen;
|
|
}
|
|
|
|
int TQDesktopWidget::numScreens() const
|
|
{
|
|
return d->screenCount;
|
|
}
|
|
|
|
TQWidget *TQDesktopWidget::screen( int screen )
|
|
{
|
|
if (d->use_xinerama)
|
|
return this;
|
|
|
|
if ( screen < 0 || screen >= d->screenCount )
|
|
screen = d->defaultScreen;
|
|
|
|
if ( ! d->screens ) {
|
|
d->screens = (TQWidget**) calloc( d->screenCount, sizeof(TQWidget*));
|
|
d->screens[ d->defaultScreen ] = this;
|
|
}
|
|
|
|
if ( ! d->screens[screen] || // not created yet
|
|
! d->screens[screen]->isDesktop() ) { // reparented away
|
|
qt_x11_create_desktop_on_screen = screen;
|
|
d->screens[screen] = new TQSingleDesktopWidget;
|
|
qt_x11_create_desktop_on_screen = -1;
|
|
}
|
|
|
|
return d->screens[screen];
|
|
}
|
|
|
|
const TQRect& TQDesktopWidget::availableGeometry( int screen ) const
|
|
{
|
|
if ( qt_desktopwidget_workarea_dirty ) {
|
|
// the workareas are dirty, invalidate them
|
|
for ( int i = 0; i < d->screenCount; ++i )
|
|
d->workareas[i] = TQRect();
|
|
qt_desktopwidget_workarea_dirty = FALSE;
|
|
}
|
|
|
|
if ( screen < 0 || screen >= d->screenCount )
|
|
screen = d->defaultScreen;
|
|
|
|
if ( d->workareas[screen].isValid() )
|
|
return d->workareas[screen];
|
|
|
|
if ( ! isVirtualDesktop() && qt_net_supports( qt_net_workarea ) ) {
|
|
Atom ret;
|
|
int format, e;
|
|
unsigned char *data = 0;
|
|
unsigned long nitems, after;
|
|
|
|
e = XGetWindowProperty( TQPaintDevice::x11AppDisplay(),
|
|
TQPaintDevice::x11AppRootWindow( screen ),
|
|
qt_net_workarea, 0, 4, False, XA_CARDINAL,
|
|
&ret, &format, &nitems, &after, &data );
|
|
|
|
if (e == Success && ret == XA_CARDINAL &&
|
|
format == 32 && nitems == 4) {
|
|
long *workarea = (long *) data;
|
|
d->workareas[screen].setRect( workarea[0], workarea[1],
|
|
workarea[2], workarea[3] );
|
|
} else {
|
|
d->workareas[screen] = screenGeometry(screen);
|
|
}
|
|
if ( data )
|
|
XFree( data );
|
|
} else {
|
|
d->workareas[screen] = screenGeometry(screen);
|
|
}
|
|
|
|
return d->workareas[screen];
|
|
}
|
|
|
|
const TQRect& TQDesktopWidget::screenGeometry( int screen ) const
|
|
{
|
|
if ( screen < 0 || screen >= d->screenCount )
|
|
screen = d->defaultScreen;
|
|
|
|
return d->rects[ screen ];
|
|
}
|
|
|
|
int TQDesktopWidget::screenNumber( TQWidget *widget ) const
|
|
{
|
|
if ( !widget )
|
|
return d->defaultScreen;
|
|
|
|
#ifndef QT_NO_XINERAMA
|
|
if (d->use_xinerama) {
|
|
// this is how we do it for xinerama
|
|
TQRect frame = widget->frameGeometry();
|
|
if ( !widget->isTopLevel() )
|
|
frame.moveTopLeft( widget->mapToGlobal( TQPoint( 0, 0 ) ) );
|
|
|
|
int maxSize = -1;
|
|
int maxScreen = -1;
|
|
|
|
for ( int i = 0; i < d->screenCount; ++i ) {
|
|
TQRect sect = d->rects[i].intersect( frame );
|
|
int size = sect.width() * sect.height();
|
|
if ( size > maxSize && sect.width() > 0 && sect.height() > 0 ) {
|
|
maxSize = size;
|
|
maxScreen = i;
|
|
}
|
|
}
|
|
return maxScreen;
|
|
}
|
|
#endif // QT_NO_XINERAMA
|
|
|
|
return widget->x11Screen();
|
|
}
|
|
|
|
int TQDesktopWidget::screenNumber( const TQPoint &point ) const
|
|
{
|
|
for ( int i = 0; i < d->screenCount; ++i ) {
|
|
if ( d->rects[i].contains( point ) )
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
void TQDesktopWidget::resizeEvent( TQResizeEvent *event )
|
|
{
|
|
d->init();
|
|
qt_desktopwidget_workarea_dirty = TRUE;
|
|
TQWidget::resizeEvent( event );
|
|
}
|