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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used 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. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui/QPaintDevice>
#include <QtGui/QPainter>
#include <QtGui/QPixmap>
#include <QtGui/QWidget>
#include "private/qt_x11_p.h"
#include "private/qpixmap_x11_p.h"
#include "private/qwidget_p.h"
#include "qx11info_x11.h"
#include "qwindowsurface_x11_p.h"
QT_BEGIN_NAMESPACE
extern void *qt_getClipRects(const QRegion &r, int &num); // in qpaintengine_x11.cpp
struct QX11WindowSurfacePrivate
{
QWidget *widget;
QPixmap device;
#ifndef QT_NO_XRENDER
bool translucentBackground;
#endif
};
QX11WindowSurface::QX11WindowSurface(QWidget *widget)
: QWindowSurface(widget), d_ptr(new QX11WindowSurfacePrivate), gc(0)
{
d_ptr->widget = widget;
#ifndef QT_NO_XRENDER
d_ptr->translucentBackground = X11->use_xrender
&& widget->x11Info().depth() == 32;
setStaticContentsSupport(!d_ptr->translucentBackground);
#else
setStaticContentsSupport(true);
#endif
}
QX11WindowSurface::~QX11WindowSurface()
{
delete d_ptr;
if (gc) {
XFreeGC(X11->display, gc);
gc = 0;
}
}
QPaintDevice *QX11WindowSurface::paintDevice()
{
return &d_ptr->device;
}
void QX11WindowSurface::beginPaint(const QRegion &rgn)
{
#ifndef QT_NO_XRENDER
Q_ASSERT(!d_ptr->device.isNull());
if (d_ptr->translucentBackground) {
if (d_ptr->device.depth() != 32)
static_cast<QX11PixmapData *>(d_ptr->device.data_ptr().data())->convertToARGB32();
::Picture src = X11->getSolidFill(d_ptr->device.x11Info().screen(), Qt::transparent);
::Picture dst = d_ptr->device.x11PictureHandle();
const QVector<QRect> rects = rgn.rects();
const int w = d_ptr->device.width();
const int h = d_ptr->device.height();
for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it)
XRenderComposite(X11->display, PictOpSrc, src, 0, dst,
0, 0, w, h, it->x(), it->y(),
it->width(), it->height());
}
#endif
}
void QX11WindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
if (d_ptr->device.isNull())
return;
QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();
QRegion wrgn(rgn);
QRect br = rgn.boundingRect();
if (!wOffset.isNull())
wrgn.translate(-wOffset);
QRect wbr = wrgn.boundingRect();
int num;
XRectangle *rects = (XRectangle *)qt_getClipRects(wrgn, num);
if (num <= 0)
return;
// qDebug() << "XSetClipRectangles";
// for (int i = 0; i < num; ++i)
// qDebug() << ' ' << i << rects[i].x << rects[i].x << rects[i].y << rects[i].width << rects[i].height;
if (num != 1)
XSetClipRectangles(X11->display, gc, 0, 0, rects, num, YXBanded);
XCopyArea(X11->display, d_ptr->device.handle(), widget->handle(), gc,
br.x() + offset.x(), br.y() + offset.y(), br.width(), br.height(), wbr.x(), wbr.y());
if (num != 1)
XSetClipMask(X11->display, gc, XNone);
}
void QX11WindowSurface::setGeometry(const QRect &rect)
{
QWindowSurface::setGeometry(rect);
const QSize size = rect.size();
if (d_ptr->device.size() == size || size.width() <= 0 || size.height() <= 0)
return;
#ifndef QT_NO_XRENDER
if (d_ptr->translucentBackground) {
QX11PixmapData *data = new QX11PixmapData(QPixmapData::PixmapType);
data->xinfo = d_ptr->widget->x11Info();
data->resize(size.width(), size.height());
d_ptr->device = QPixmap(data);
} else
#endif
{
QPixmap::x11SetDefaultScreen(d_ptr->widget->x11Info().screen());
QX11PixmapData *oldData = static_cast<QX11PixmapData *>(d_ptr->device.pixmapData());
if (oldData && !(oldData->flags & QX11PixmapData::Uninitialized) && hasStaticContents()) {
// Copy the content of the old pixmap into the new one.
QX11PixmapData *newData = new QX11PixmapData(QPixmapData::PixmapType);
newData->resize(size.width(), size.height());
Q_ASSERT(oldData->d == newData->d);
QRegion staticRegion(staticContents());
// Make sure we're inside the boundaries of the old pixmap.
staticRegion &= QRect(0, 0, oldData->w, oldData->h);
const QRect boundingRect(staticRegion.boundingRect());
const int dx = boundingRect.x();
const int dy = boundingRect.y();
int num;
XRectangle *rects = (XRectangle *)qt_getClipRects(staticRegion, num);
GC tmpGc = XCreateGC(X11->display, oldData->hd, 0, 0);
XSetClipRectangles(X11->display, tmpGc, 0, 0, rects, num, YXBanded);
XCopyArea(X11->display, oldData->hd, newData->hd, tmpGc,
dx, dy, qMin(boundingRect.width(), size.width()),
qMin(boundingRect.height(), size.height()), dx, dy);
XFreeGC(X11->display, tmpGc);
newData->flags &= ~QX11PixmapData::Uninitialized;
d_ptr->device = QPixmap(newData);
} else {
d_ptr->device = QPixmap(size);
}
}
if (gc) {
XFreeGC(X11->display, gc);
gc = 0;
}
if (!d_ptr->device.isNull()) {
gc = XCreateGC(X11->display, d_ptr->device.handle(), 0, 0);
XSetGraphicsExposures(X11->display, gc, False);
}
}
bool QX11WindowSurface::scroll(const QRegion &area, int dx, int dy)
{
QRect rect = area.boundingRect();
if (d_ptr->device.isNull())
return false;
GC gc = XCreateGC(X11->display, d_ptr->device.handle(), 0, 0);
XCopyArea(X11->display, d_ptr->device.handle(), d_ptr->device.handle(), gc,
rect.x(), rect.y(), rect.width(), rect.height(),
rect.x()+dx, rect.y()+dy);
XFreeGC(X11->display, gc);
return true;
}
QPixmap QX11WindowSurface::grabWidget(const QWidget *widget,
const QRect& rect) const
{
if (!widget || d_ptr->device.isNull())
return QPixmap();
QRect srcRect;
// make sure the rect is inside the widget & clip to widget's rect
if (!rect.isEmpty())
srcRect = rect & widget->rect();
else
srcRect = widget->rect();
if (srcRect.isEmpty())
return QPixmap();
// If it's a child widget we have to translate the coordinates
if (widget != window())
srcRect.translate(widget->mapTo(window(), QPoint(0, 0)));
QPixmap::x11SetDefaultScreen(widget->x11Info().screen());
QPixmap px(srcRect.width(), srcRect.height());
GC tmpGc = XCreateGC(X11->display, d_ptr->device.handle(), 0, 0);
// Copy srcRect from the backing store to the new pixmap
XSetGraphicsExposures(X11->display, tmpGc, False);
XCopyArea(X11->display, d_ptr->device.handle(), px.handle(), tmpGc,
srcRect.x(), srcRect.y(), srcRect.width(), srcRect.height(), 0, 0);
XFreeGC(X11->display, tmpGc);
return px;
}
QT_END_NAMESPACE
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