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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qdebug.h>
#include <qglobal.h> // for Q_WS_WIN define (non-PCH)
#ifdef Q_WS_WIN
#include <qlibrary.h>
#include <qt_windows.h>
#endif
#include <QtGui/qpaintdevice.h>
#include <QtGui/qwidget.h>
#include "private/qwindowsurface_raster_p.h"
#include "private/qnativeimage_p.h"
#include "private/qwidget_p.h"
#ifdef Q_WS_X11
#include "private/qpixmap_x11_p.h"
#include "private/qt_x11_p.h"
#include "private/qwidget_p.h"
#include "qx11info_x11.h"
#endif
#include "private/qdrawhelper_p.h"
#ifdef Q_WS_MAC
#include <private/qt_cocoa_helpers_mac_p.h>
#endif
QT_BEGIN_NAMESPACE
class QRasterWindowSurfacePrivate
{
public:
QNativeImage *image;
#ifdef Q_WS_X11
GC gc;
#ifndef QT_NO_XRENDER
uint translucentBackground : 1;
#endif
#endif
uint inSetGeometry : 1;
};
QRasterWindowSurface::QRasterWindowSurface(QWidget *window)
: QWindowSurface(window), d_ptr(new QRasterWindowSurfacePrivate)
{
#ifdef Q_WS_X11
d_ptr->gc = XCreateGC(X11->display, window->handle(), 0, 0);
#ifndef QT_NO_XRENDER
d_ptr->translucentBackground = X11->use_xrender
&& window->x11Info().depth() == 32;
#endif
#endif
d_ptr->image = 0;
d_ptr->inSetGeometry = false;
setStaticContentsSupport(true);
}
QRasterWindowSurface::~QRasterWindowSurface()
{
#ifdef Q_WS_X11
XFreeGC(X11->display, d_ptr->gc);
#endif
if (d_ptr->image)
delete d_ptr->image;
}
QPaintDevice *QRasterWindowSurface::paintDevice()
{
return &d_ptr->image->image;
}
void QRasterWindowSurface::beginPaint(const QRegion &rgn)
{
#if (defined(Q_WS_X11) && !defined(QT_NO_XRENDER)) || (defined(Q_WS_WIN) && !defined(Q_WS_WINCE))
if (!qt_widget_private(window())->isOpaque && window()->testAttribute(Qt::WA_TranslucentBackground)) {
#if defined(Q_WS_WIN) && !defined(Q_WS_WINCE)
if (d_ptr->image->image.format() != QImage::Format_ARGB32_Premultiplied)
prepareBuffer(QImage::Format_ARGB32_Premultiplied, window());
#endif
QPainter p(&d_ptr->image->image);
p.setCompositionMode(QPainter::CompositionMode_Source);
const QVector<QRect> rects = rgn.rects();
const QColor blank = Qt::transparent;
for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
p.fillRect(*it, blank);
}
}
#else
Q_UNUSED(rgn);
#endif
}
void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
{
Q_D(QRasterWindowSurface);
// Not ready for painting yet, bail out. This can happen in
// QWidget::create_sys()
if (!d->image)
return;
#ifdef Q_WS_WIN
QRect br = rgn.boundingRect();
#ifndef Q_WS_WINCE
if (!qt_widget_private(window())->isOpaque && window()->testAttribute(Qt::WA_TranslucentBackground)) {
QRect r = window()->frameGeometry();
QPoint frameOffset = qt_widget_private(window())->frameStrut().topLeft();
QRect dirtyRect = br.translated(offset + frameOffset);
SIZE size = {r.width(), r.height()};
POINT ptDst = {r.x(), r.y()};
POINT ptSrc = {0, 0};
BLENDFUNCTION blend = {AC_SRC_OVER, 0, (int)(255.0 * window()->windowOpacity()), Q_AC_SRC_ALPHA};
RECT dirty = {dirtyRect.x(), dirtyRect.y(),
dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()};
Q_UPDATELAYEREDWINDOWINFO info = {sizeof(info), NULL, &ptDst, &size, d->image->hdc, &ptSrc, 0, &blend, Q_ULW_ALPHA, &dirty};
ptrUpdateLayeredWindowIndirect(window()->internalWinId(), &info);
} else
#endif
{
QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();
HDC widget_dc = widget->getDC();
QRect wbr = br.translated(-wOffset);
BitBlt(widget_dc, wbr.x(), wbr.y(), wbr.width(), wbr.height(),
d->image->hdc, br.x() + offset.x(), br.y() + offset.y(), SRCCOPY);
widget->releaseDC(widget_dc);
}
#ifndef QT_NO_DEBUG
static bool flush = !qgetenv("QT_FLUSH_WINDOWSURFACE").isEmpty();
if (flush) {
SelectObject(qt_win_display_dc(), GetStockObject(BLACK_BRUSH));
Rectangle(qt_win_display_dc(), 0, 0, d->image->width() + 2, d->image->height() + 2);
BitBlt(qt_win_display_dc(), 1, 1, d->image->width(), d->image->height(),
d->image->hdc, 0, 0, SRCCOPY);
}
#endif
#endif
#ifdef Q_WS_X11
extern void *qt_getClipRects(const QRegion &r, int &num); // in qpaintengine_x11.cpp
extern QWidgetData* qt_widget_data(QWidget *);
QPoint wOffset = qt_qwidget_data(widget)->wrect.topLeft();
if (widget->window() != window()) {
XFreeGC(X11->display, d_ptr->gc);
d_ptr->gc = XCreateGC(X11->display, widget->handle(), 0, 0);
}
QRegion wrgn(rgn);
if (!wOffset.isNull())
wrgn.translate(-wOffset);
QRect wbr = wrgn.boundingRect();
int num;
XRectangle *rects = (XRectangle *)qt_getClipRects(wrgn, num);
XSetClipRectangles(X11->display, d_ptr->gc, 0, 0, rects, num, YXBanded);
QRect br = rgn.boundingRect().translated(offset);
#ifndef QT_NO_MITSHM
if (d_ptr->image->xshmpm) {
XCopyArea(X11->display, d_ptr->image->xshmpm, widget->handle(), d_ptr->gc,
br.x(), br.y(), br.width(), br.height(), wbr.x(), wbr.y());
XSync(X11->display, False);
} else
#endif
{
const QImage &src = d->image->image;
br = br.intersected(src.rect());
if (src.format() != QImage::Format_RGB32 || widget->x11Info().depth() < 24) {
QX11PixmapData *data = new QX11PixmapData(QPixmapData::PixmapType);
data->xinfo = widget->x11Info();
data->fromImage(src, Qt::AutoColor);
QPixmap pm = QPixmap(data);
XCopyArea(X11->display, pm.handle(), widget->handle(), d_ptr->gc, br.x() , br.y() , br.width(), br.height(), wbr.x(), wbr.y());
} else {
// qpaintengine_x11.cpp
extern void qt_x11_drawImage(const QRect &rect, const QPoint &pos, const QImage &image, Drawable hd, GC gc, Display *dpy, Visual *visual, int depth);
qt_x11_drawImage(br, wbr.topLeft(), src, widget->handle(), d_ptr->gc, X11->display, (Visual *)widget->x11Info().visual(), widget->x11Info().depth());
}
}
#endif // FALCON
#ifdef Q_WS_MAC
// qDebug() << "Flushing" << widget << rgn << offset;
// d->image->image.save("flush.png");
Q_UNUSED(offset);
// Get a context for the widget.
#ifndef QT_MAC_USE_COCOA
CGContextRef context;
CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
QDBeginCGContext(port, &context);
#else
extern CGContextRef qt_mac_graphicsContextFor(QWidget *);
CGContextRef context = qt_mac_graphicsContextFor(widget);
#endif
CGContextSaveGState(context);
// Flip context.
CGContextTranslateCTM(context, 0, widget->height());
CGContextScaleCTM(context, 1, -1);
// Clip to region.
const QVector<QRect> &rects = rgn.rects();
for (int i = 0; i < rects.size(); ++i) {
const QRect &rect = rects.at(i);
CGContextAddRect(context, CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()));
}
CGContextClip(context);
QRect r = rgn.boundingRect();
const CGRect area = CGRectMake(r.x(), r.y(), r.width(), r.height());
CGImageRef image = CGBitmapContextCreateImage(d->image->cg);
CGImageRef subImage = CGImageCreateWithImageInRect(image, area);
qt_mac_drawCGImage(context, &area, subImage);
CGImageRelease(subImage);
CGImageRelease(image);
// CGSize size = { d->image->image.width(), d->image->image.height() };
// CGLayerRef layer = CGLayerCreateWithContext(d->image->cg, size, 0);
// CGPoint pt = { 0, 0 };
// CGContextDrawLayerAtPoint(context, pt, layer);
// CGLayerRelease(layer);
// Restore context.
CGContextRestoreGState(context);
#ifndef QT_MAC_USE_COCOA
QDEndCGContext(port, &context);
#else
CGContextFlush(context);
#endif
#endif
#ifdef Q_OS_SYMBIAN
Q_UNUSED(widget);
Q_UNUSED(rgn);
Q_UNUSED(offset);
#endif
}
void QRasterWindowSurface::setGeometry(const QRect &rect)
{
QWindowSurface::setGeometry(rect);
Q_D(QRasterWindowSurface);
d->inSetGeometry = true;
if (d->image == 0 || d->image->width() < rect.width() || d->image->height() < rect.height()) {
#if (defined(Q_WS_X11) && !defined(QT_NO_XRENDER)) || (defined(Q_WS_WIN) && !defined(Q_WS_WINCE))
#ifndef Q_WS_WIN
if (d_ptr->translucentBackground)
#else
if (!qt_widget_private(window())->isOpaque)
#endif
prepareBuffer(QImage::Format_ARGB32_Premultiplied, window());
else
#endif
prepareBuffer(QNativeImage::systemFormat(), window());
}
d->inSetGeometry = false;
}
// from qwindowsurface.cpp
extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset);
bool QRasterWindowSurface::scroll(const QRegion &area, int dx, int dy)
{
#ifdef Q_WS_WIN
Q_D(QRasterWindowSurface);
if (!d->image || !d->image->hdc)
return false;
QRect rect = area.boundingRect();
BitBlt(d->image->hdc, rect.x()+dx, rect.y()+dy, rect.width(), rect.height(),
d->image->hdc, rect.x(), rect.y(), SRCCOPY);
return true;
#else
Q_D(QRasterWindowSurface);
if (!d->image || d->image->image.isNull())
return false;
const QVector<QRect> rects = area.rects();
for (int i = 0; i < rects.size(); ++i)
qt_scrollRectInImage(d->image->image, rects.at(i), QPoint(dx, dy));
return true;
#endif
}
void QRasterWindowSurface::prepareBuffer(QImage::Format format, QWidget *widget)
{
Q_D(QRasterWindowSurface);
int width = window()->width();
int height = window()->height();
if (d->image) {
width = qMax(d->image->width(), width);
height = qMax(d->image->height(), height);
}
if (width == 0 || height == 0) {
delete d->image;
d->image = 0;
return;
}
QNativeImage *oldImage = d->image;
d->image = new QNativeImage(width, height, format, false, widget);
if (oldImage && d->inSetGeometry && hasStaticContents()) {
// Make sure we use the const version of bits() (no detach).
const uchar *src = const_cast<const QImage &>(oldImage->image).bits();
uchar *dst = d->image->image.bits();
const int srcBytesPerLine = oldImage->image.bytesPerLine();
const int dstBytesPerLine = d->image->image.bytesPerLine();
const int bytesPerPixel = oldImage->image.depth() >> 3;
QRegion staticRegion(staticContents());
// Make sure we're inside the boundaries of the old image.
staticRegion &= QRect(0, 0, oldImage->image.width(), oldImage->image.height());
const QVector<QRect> &rects = staticRegion.rects();
const QRect *srcRect = rects.constData();
// Copy the static content of the old image into the new one.
int numRectsLeft = rects.size();
do {
const int bytesOffset = srcRect->x() * bytesPerPixel;
const int dy = srcRect->y();
// Adjust src and dst to point to the right offset.
const uchar *s = src + dy * srcBytesPerLine + bytesOffset;
uchar *d = dst + dy * dstBytesPerLine + bytesOffset;
const int numBytes = srcRect->width() * bytesPerPixel;
int numScanLinesLeft = srcRect->height();
do {
::memcpy(d, s, numBytes);
d += dstBytesPerLine;
s += srcBytesPerLine;
} while (--numScanLinesLeft);
++srcRect;
} while (--numRectsLeft);
}
delete oldImage;
}
QT_END_NAMESPACE
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