Long live Qt!

1 files changed, 244 insertions, 0 deletions

diff --git a/src/gui/painting/qwindowsurface_x11.cpp b/src/gui/painting/qwindowsurface_x11.cpp
new file mode 100644
index 0000000..9e8b498
--- /dev/null
+++ b/src/gui/painting/qwindowsurface_x11.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@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
+    if (d_ptr->translucentBackground) {
+        if (d_ptr->device.depth() != 32)
+            static_cast<QX11PixmapData *>(d_ptr->device.data_ptr())->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;
+    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());
+}
+
+void QX11WindowSurface::setGeometry(const QRect &rect)
+{
+    QWindowSurface::setGeometry(rect);
+
+    const QSize size = rect.size();
+    if (d_ptr->device.size() == size)
+        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());
+        Q_ASSERT(oldData);
+        if (!oldData->uninit && 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->uninit = false;
+
+            d_ptr->device = QPixmap(newData);
+        } else {
+            d_ptr->device = QPixmap(size);
+        }
+    }
+
+    if (gc)
+        XFreeGC(X11->display, gc);
+    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