Add a new window surface which utilises QX11GLPixmapData

The new surface uses XCopyArea to post updates to the window and thus,
supports partial updates.

5 files changed, 239 insertions, 4 deletions

diff --git a/src/opengl/opengl.pro b/src/opengl/opengl.pro
index 961c781..a212675 100644
--- a/src/opengl/opengl.pro
+++ b/src/opengl/opengl.pro
@@ -83,11 +83,12 @@ x11 {
         SOURCES +=  qgl_x11egl.cpp \
                     qglpixelbuffer_egl.cpp \
                     qgl_egl.cpp \
-                    qpixmapdata_x11gl_egl.cpp
+                    qpixmapdata_x11gl_egl.cpp \
+                    qwindowsurface_x11gl.cpp
 
         HEADERS +=  qgl_egl_p.h \
-                    qpixmapdata_x11gl_p.h
-
+                    qpixmapdata_x11gl_p.h \
+                    qwindowsurface_x11gl_p.h
 
     } else {
         SOURCES +=  qgl_x11.cpp \
diff --git a/src/opengl/qgraphicssystem_gl.cpp b/src/opengl/qgraphicssystem_gl.cpp
index 0ee1e82..c0d9233 100644
--- a/src/opengl/qgraphicssystem_gl.cpp
+++ b/src/opengl/qgraphicssystem_gl.cpp
@@ -47,8 +47,9 @@
 #include "private/qgl_p.h"
 #include <private/qwindowsurface_raster_p.h>
 
-#ifdef Q_WS_X11
+#if defined(Q_WS_X11) && defined(QT_OPENGL_ES)
 #include "private/qpixmapdata_x11gl_p.h"
+#include "private/qwindowsurface_x11gl_p.h"
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -75,6 +76,11 @@ QWindowSurface *QGLGraphicsSystem::createWindowSurface(QWidget *widget) const
         return new QRasterWindowSurface(widget);
 #endif
 
+#if defined(Q_WS_X11) && defined(QT_OPENGL_ES)
+    if (QX11GLPixmapData::hasX11GLPixmaps())
+        return new QX11GLWindowSurface(widget);
+#endif
+
     return new QGLWindowSurface(widget);
 }
 
diff --git a/src/opengl/qwindowsurface_gl.cpp b/src/opengl/qwindowsurface_gl.cpp
index 2816eca..4547416 100644
--- a/src/opengl/qwindowsurface_gl.cpp
+++ b/src/opengl/qwindowsurface_gl.cpp
@@ -364,6 +364,7 @@ void QGLWindowSurface::hijackWindow(QWidget *widget)
     if (ctxpriv->eglSurface == EGL_NO_SURFACE) {
         qWarning() << "hijackWindow() could not create EGL surface";
     }
+    qDebug("QGLWindowSurface - using EGLConfig %d", ctxpriv->eglContext->config());
 #endif
 
     widgetPrivate->extraData()->glContext = ctx;
diff --git a/src/opengl/qwindowsurface_x11gl.cpp b/src/opengl/qwindowsurface_x11gl.cpp
new file mode 100644
index 0000000..2e05ab3
--- /dev/null
+++ b/src/opengl/qwindowsurface_x11gl.cpp
@@ -0,0 +1,146 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL 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 <QTime>
+#include <QDebug>
+
+#include <private/qt_x11_p.h>
+#include <private/qimagepixmapcleanuphooks_p.h>
+
+#include "qwindowsurface_x11gl_p.h"
+#include "qpixmapdata_x11gl_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QX11GLWindowSurface::QX11GLWindowSurface(QWidget* window)
+    : QWindowSurface(window), m_GC(0), m_window(window)
+{
+    QImagePixmapCleanupHooks::instance();
+}
+
+QX11GLWindowSurface::~QX11GLWindowSurface()
+{
+
+    if (m_GC)
+        XFree(m_GC);
+}
+
+QPaintDevice *QX11GLWindowSurface::paintDevice()
+{
+    return &m_backBuffer;
+}
+
+extern void *qt_getClipRects(const QRegion &r, int &num); // in qpaintengine_x11.cpp
+
+void QX11GLWindowSurface::flush(QWidget *widget, const QRegion &widgetRegion, const QPoint &offset)
+{
+//    qDebug("QX11GLWindowSurface::flush()");
+    QTime startTime = QTime::currentTime();
+    if (m_backBuffer.isNull()) {
+        qDebug("QHarmattanWindowSurface::flush() - backBuffer is null, not flushing anything");
+        return;
+    }
+
+    QPoint widgetOffset = qt_qwidget_data(widget)->wrect.topLeft();
+    QRegion windowRegion(widgetRegion);
+    QRect boundingRect = widgetRegion.boundingRect();
+    if (!widgetOffset.isNull())
+        windowRegion.translate(-widgetOffset);
+    QRect windowBoundingRect = windowRegion.boundingRect();
+
+    int rectCount;
+    XRectangle *rects = (XRectangle *)qt_getClipRects(windowRegion, rectCount);
+    if (rectCount <= 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 (m_GC == 0) {
+        m_GC = XCreateGC(X11->display, m_window->handle(), 0, 0);
+        XSetGraphicsExposures(X11->display, m_GC, False);
+    }
+
+    XSetClipRectangles(X11->display, m_GC, 0, 0, rects, rectCount, YXBanded);
+    XCopyArea(X11->display, m_backBuffer.handle(), m_window->handle(), m_GC,
+              boundingRect.x() + offset.x(), boundingRect.y() + offset.y(),
+              boundingRect.width(), boundingRect.height(),
+              windowBoundingRect.x(), windowBoundingRect.y());
+}
+
+void QX11GLWindowSurface::setGeometry(const QRect &rect)
+{
+    if (rect.width() > m_backBuffer.size().width() || rect.height() > m_backBuffer.size().height()) {
+        QSize newSize = rect.size();
+//        QSize newSize(1024,512);
+        qDebug() << "QX11GLWindowSurface::setGeometry() - creating a pixmap of size" << newSize;
+        QX11GLPixmapData *pd = new QX11GLPixmapData;
+        pd->resize(newSize.width(), newSize.height());
+        m_backBuffer = QPixmap(pd);
+    }
+
+//    if (gc)
+//        XFreeGC(X11->display, gc);
+//    gc = XCreateGC(X11->display, d_ptr->device.handle(), 0, 0);
+//    XSetGraphicsExposures(X11->display, gc, False);
+    QWindowSurface::setGeometry(rect);
+}
+
+bool QX11GLWindowSurface::scroll(const QRegion &area, int dx, int dy)
+{
+    return false;
+}
+
+/*
+void QX11GLWindowSurface::beginPaint(const QRegion &region)
+{
+}
+
+void QX11GLWindowSurface::endPaint(const QRegion &region)
+{
+}
+
+QImage *QX11GLWindowSurface::buffer(const QWidget *widget)
+{
+}
+*/
+
+QT_END_NAMESPACE
diff --git a/src/opengl/qwindowsurface_x11gl_p.h b/src/opengl/qwindowsurface_x11gl_p.h
new file mode 100644
index 0000000..5ba4dc5
--- /dev/null
+++ b/src/opengl/qwindowsurface_x11gl_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSURFACE_X11GL_P_H
+#define QWINDOWSURFACE_X11GL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwindowsurface_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QX11GLWindowSurface : public QWindowSurface
+{
+public:
+    QX11GLWindowSurface(QWidget* window);
+    virtual ~QX11GLWindowSurface();
+
+    // Inherreted from QWindowSurface
+    QPaintDevice *paintDevice();
+    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
+    void setGeometry(const QRect &rect);
+    bool scroll(const QRegion &area, int dx, int dy);
+
+private:
+    GC      m_GC;
+    QPixmap m_backBuffer;
+    QWidget *m_window;
+};
+
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSURFACE_X11GL_P_H