Merge branch '4.7-upstream' into 4.7-doc

1 files changed, 287 insertions, 0 deletions

diff --git a/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp b/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp
new file mode 100644
index 0000000..405b765
--- /dev/null
+++ b/src/plugins/graphicssystems/meego/qmeegolivepixmapdata.cpp
@@ -0,0 +1,287 @@
+/****************************************************************************
+**
+** 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 plugins 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 "qmeegolivepixmapdata.h"
+#include "qmeegoextensions.h"
+#include "qmeegorasterpixmapdata.h"
+#include <private/qimage_p.h>
+#include <private/qwindowsurface_gl_p.h>
+#include <private/qeglcontext_p.h>
+#include <private/qapplication_p.h>
+#include <private/qgraphicssystem_runtime_p.h>
+#include <private/qpixmap_x11_p.h>
+#include <stdio.h>
+
+static EGLint lock_attribs[] = {
+    EGL_MAP_PRESERVE_PIXELS_KHR, EGL_TRUE,
+    EGL_LOCK_USAGE_HINT_KHR, EGL_READ_SURFACE_BIT_KHR | EGL_WRITE_SURFACE_BIT_KHR,
+    EGL_NONE
+};
+
+static EGLint preserved_attribs[] = {
+    EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
+    EGL_NONE
+};
+
+// as copied from qwindowsurface.cpp
+void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset)
+{
+    // make sure we don't detach
+    uchar *mem = const_cast<uchar*>(const_cast<const QImage &>(img).bits());
+
+    int lineskip = img.bytesPerLine();
+    int depth = img.depth() >> 3;
+
+    const QRect imageRect(0, 0, img.width(), img.height());
+    const QRect r = rect & imageRect & imageRect.translated(-offset);
+    const QPoint p = rect.topLeft() + offset;
+
+    if (r.isEmpty())
+        return;
+
+    const uchar *src;
+    uchar *dest;
+
+    if (r.top() < p.y()) {
+        src = mem + r.bottom() * lineskip + r.left() * depth;
+        dest = mem + (p.y() + r.height() - 1) * lineskip + p.x() * depth;
+        lineskip = -lineskip;
+    } else {
+        src = mem + r.top() * lineskip + r.left() * depth;
+        dest = mem + p.y() * lineskip + p.x() * depth;
+    }
+
+    const int w = r.width();
+    int h = r.height();
+    const int bytes = w * depth;
+
+    // overlapping segments?
+    if (offset.y() == 0 && qAbs(offset.x()) < w) {
+        do {
+            ::memmove(dest, src, bytes);
+            dest += lineskip;
+            src += lineskip;
+        } while (--h);
+    } else {
+        do {
+            ::memcpy(dest, src, bytes);
+            dest += lineskip;
+            src += lineskip;
+        } while (--h);
+    }
+}
+
+/* Public */
+
+QMeeGoLivePixmapData::QMeeGoLivePixmapData(int w, int h, QImage::Format format) : QGLPixmapData(QPixmapData::PixmapType)
+{
+    QImage image(w, h, format);
+    QX11PixmapData *pmd = new QX11PixmapData(QPixmapData::PixmapType);
+    pmd->fromImage(image, Qt::NoOpaqueDetection);
+    backingX11Pixmap = new QPixmap(pmd);
+
+    initializeThroughEGLImage();
+}
+
+QMeeGoLivePixmapData::QMeeGoLivePixmapData(Qt::HANDLE h) : QGLPixmapData(QPixmapData::PixmapType)
+{
+    backingX11Pixmap = new QPixmap(QPixmap::fromX11Pixmap(h));
+    initializeThroughEGLImage();
+}
+
+QMeeGoLivePixmapData::~QMeeGoLivePixmapData()
+{
+    delete backingX11Pixmap;
+}
+
+void QMeeGoLivePixmapData::initializeThroughEGLImage()
+{
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    QMeeGoExtensions::ensureInitialized();
+
+    EGLImageKHR eglImage = EGL_NO_IMAGE_KHR;
+    GLuint newTextureId = 0;
+
+    eglImage = QEgl::eglCreateImageKHR(QEgl::display(), EGL_NO_CONTEXT, EGL_NATIVE_PIXMAP_KHR,
+                                       (EGLClientBuffer) backingX11Pixmap->handle(), preserved_attribs);
+
+    if (eglImage == EGL_NO_IMAGE_KHR) {
+        qWarning("eglCreateImageKHR failed (live texture)!");
+        return;
+    }
+
+    glGenTextures(1, &newTextureId);
+    glBindTexture(GL_TEXTURE_2D, newTextureId);
+
+    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (EGLImageKHR) eglImage);
+    if (glGetError() == GL_NO_ERROR) {
+        resize(backingX11Pixmap->width(), backingX11Pixmap->height());
+        texture()->id = newTextureId;
+        texture()->options &= ~QGLContext::InvertedYBindOption;
+        m_hasAlpha = backingX11Pixmap->hasAlphaChannel();
+    } else {
+        qWarning("Failed to create a texture from an egl image (live texture)!");
+        glDeleteTextures(1, &newTextureId);
+    }
+
+    QEgl::eglDestroyImageKHR(QEgl::display(), eglImage);
+}
+
+QPixmapData *QMeeGoLivePixmapData::createCompatiblePixmapData() const
+{
+    qWarning("Create compatible called on live pixmap! Expect fail soon...");
+    return new QMeeGoRasterPixmapData(pixelType());
+}
+
+QImage* QMeeGoLivePixmapData::lock()
+{
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    QMeeGoExtensions::ensureInitialized();
+
+    void *data = 0;
+    int pitch = 0;
+    EGLSurface surface = 0;
+    QImage::Format format;
+    lockedImage = QImage();
+
+    surface = getSurfaceForBackingPixmap();
+    if (! QMeeGoExtensions::eglLockSurfaceKHR(QEgl::display(), surface, lock_attribs)) {
+        qWarning("Failed to lock surface (live texture)!");
+        return &lockedImage;
+    }
+
+    eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_POINTER_KHR, (EGLint*) &data);
+    eglQuerySurface(QEgl::display(), surface, EGL_BITMAP_PITCH_KHR, (EGLint*) &pitch);
+
+    // Ok, here we know we just support those two formats. Real solution would be:
+    // uqery also the format.
+    if (backingX11Pixmap->depth() > 16)
+        format = QImage::Format_ARGB32_Premultiplied;
+    else
+        format = QImage::Format_RGB16;
+
+    if (data == NULL || pitch == 0) {
+        qWarning("Failed to query the live texture!");
+        return &lockedImage;
+    }
+
+    lockedImage = QImage((uchar *) data, width(), height(), format);
+    return &lockedImage;
+}
+
+bool QMeeGoLivePixmapData::release(QImage* /*img*/)
+{
+    QGLShareContextScope ctx(qt_gl_share_widget()->context());
+    QMeeGoExtensions::ensureInitialized();
+
+    if (QMeeGoExtensions::eglUnlockSurfaceKHR(QEgl::display(), getSurfaceForBackingPixmap())) {
+        lockedImage = QImage();
+        glFinish();
+        return true;
+    } else {
+        lockedImage = QImage();
+        return false;
+    }
+}
+
+Qt::HANDLE QMeeGoLivePixmapData::handle()
+{
+    return backingX11Pixmap->handle();
+}
+
+bool QMeeGoLivePixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    lock();
+
+    if (!lockedImage.isNull())
+        qt_scrollRectInImage(lockedImage, rect, QPoint(dx, dy));
+
+    release(&lockedImage);
+    return true;
+}
+
+EGLSurface QMeeGoLivePixmapData::getSurfaceForBackingPixmap()
+{
+    // This code is a crative remix of the stuff that can be found in the
+    // Qt's TFP implementation in /src/opengl/qgl_x11egl.cpp ::bindiTextureFromNativePixmap
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(backingX11Pixmap->data_ptr().data());
+    Q_ASSERT(pixmapData->classId() == QPixmapData::X11Class);
+    bool hasAlpha = pixmapData->hasAlphaChannel();
+
+    if (pixmapData->gl_surface &&
+        hasAlpha == (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
+        return pixmapData->gl_surface;
+
+    // Check to see if the surface is still valid
+    if (pixmapData->gl_surface &&
+        hasAlpha != ((pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha) > 0)) {
+        // Surface is invalid!
+        destroySurfaceForPixmapData(pixmapData);
+    }
+
+    if (pixmapData->gl_surface == 0) {
+        EGLConfig config = QEgl::defaultConfig(QInternal::Pixmap,
+                                               QEgl::OpenGL,
+                                               hasAlpha ? QEgl::Translucent : QEgl::NoOptions);
+
+        pixmapData->gl_surface = (void*)QEgl::createSurface(backingX11Pixmap, config);
+
+        if (hasAlpha)
+            pixmapData->flags |= QX11PixmapData::GlSurfaceCreatedWithAlpha;
+        else
+            pixmapData->flags &= ~QX11PixmapData::GlSurfaceCreatedWithAlpha;
+
+        if (pixmapData->gl_surface == (void*)EGL_NO_SURFACE)
+            return NULL;
+    }
+
+    return pixmapData->gl_surface;
+}
+
+void QMeeGoLivePixmapData::destroySurfaceForPixmapData(QPixmapData* pmd)
+{
+    Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
+    QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
+    if (pixmapData->gl_surface) {
+        eglDestroySurface(QEgl::display(), (EGLSurface)pixmapData->gl_surface);
+        pixmapData->gl_surface = 0;
+    }
+}