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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 193 insertions, 0 deletions

diff --git a/src/plugins/platforms/openvglite/qgraphicssystem_vglite.cpp b/src/plugins/platforms/openvglite/qgraphicssystem_vglite.cpp
new file mode 100644
index 0000000000..5f7106e616
--- /dev/null
+++ b/src/plugins/platforms/openvglite/qgraphicssystem_vglite.cpp
@@ -0,0 +1,193 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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 "qgraphicssystem_vglite.h"
+#include "qwindowsurface_vglite.h"
+#include <QtOpenVG/private/qpixmapdata_vg_p.h>
+#include <QtGui/private/qegl_p.h>
+#include <QtCore/qdebug.h>
+#ifdef OPENVG_USBHP_INIT
+extern "C" {
+#include <linuxusbhp.h>
+};
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QVGLiteGraphicsSystem::QVGLiteGraphicsSystem()
+    : w(0), h(0), d(0), dw(0), dh(0), physWidth(0), physHeight(0),
+      surface(0), context(0), rootWindow(0),
+      screenFormat(QImage::Format_RGB16), preservedSwap(false)
+{
+#ifdef OPENVG_USBHP_INIT
+    initLibrary();
+#endif
+
+    // The graphics system is also the screen definition.
+    mScreens.append(this);
+
+    QString displaySpec = QString::fromLatin1(qgetenv("QWS_DISPLAY"));
+    QStringList displayArgs = displaySpec.split(QLatin1Char(':'));
+
+    // Initialize EGL and create the global EGL context.
+    context = qt_vg_create_context(0);
+    if (!context) {
+        qFatal("QVGLiteGraphicsSystem: could not initialize EGL");
+        return;
+    }
+
+    // Get the root window handle to use.  Default to zero.
+    QRegExp winidRx(QLatin1String("winid=?(\\d+)"));
+    int winidIdx = displayArgs.indexOf(winidRx);
+    int handle = 0;
+    if (winidIdx >= 0) {
+        winidRx.exactMatch(displayArgs.at(winidIdx));
+        handle = winidRx.cap(1).toInt();
+    }
+
+    // Create a full-screen window based on the native handle.
+    // If the context is premultiplied, the window should be too.
+    QEglProperties props;
+#ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
+    EGLint surfaceType = 0;
+    if (context->configAttrib(EGL_SURFACE_TYPE, &surfaceType) &&
+        (surfaceType & EGL_VG_ALPHA_FORMAT_PRE_BIT) != 0)
+        props.setValue(EGL_VG_ALPHA_FORMAT, EGL_VG_ALPHA_FORMAT_PRE);
+#endif
+    rootWindow = eglCreateWindowSurface
+        (context->display(), context->config(),
+         (EGLNativeWindowType)handle, props.properties());
+    if (rootWindow == EGL_NO_SURFACE) {
+        delete context;
+        context = 0;
+        qFatal("QVGLiteGraphicsSystem: could not create full-screen window");
+        return;
+    }
+
+    // Try to turn on preserved swap behaviour on the root window.
+    // This will allow us to optimize compositing to focus on just
+    // the screen region that has changed.  Otherwise we must
+    // re-composite the entire screen every frame.
+#if !defined(QVG_NO_PRESERVED_SWAP)
+    eglGetError();  // Clear error state first.
+    eglSurfaceAttrib(context->display(), rootWindow,
+                     EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED);
+    preservedSwap = (eglGetError() == EGL_SUCCESS);
+#else
+    preservedSwap = false;
+#endif
+
+    // Fetch the root window properties.
+    eglQuerySurface(context->display(), rootWindow, EGL_WIDTH, &w);
+    eglQuerySurface(context->display(), rootWindow, EGL_HEIGHT, &h);
+    screenFormat = qt_vg_config_to_image_format(context);
+    switch (screenFormat) {
+        case QImage::Format_ARGB32_Premultiplied:
+        case QImage::Format_ARGB32:
+        case QImage::Format_RGB32:
+        default:
+            d = 32;
+            break;
+        case QImage::Format_RGB16:
+        case QImage::Format_ARGB4444_Premultiplied:
+            d = 16;
+            break;
+    }
+    dw = w;
+    dh = h;
+    qDebug("screen size: %dx%dx%d", w, h, d);
+
+    // Handle display physical size spec.  From qscreenlinuxfb_qws.cpp.
+    QRegExp mmWidthRx(QLatin1String("mmWidth=?(\\d+)"));
+    int dimIdxW = displayArgs.indexOf(mmWidthRx);
+    QRegExp mmHeightRx(QLatin1String("mmHeight=?(\\d+)"));
+    int dimIdxH = displayArgs.indexOf(mmHeightRx);
+    if (dimIdxW >= 0) {
+        mmWidthRx.exactMatch(displayArgs.at(dimIdxW));
+        physWidth = mmWidthRx.cap(1).toInt();
+        if (dimIdxH < 0)
+            physHeight = dh*physWidth/dw;
+    }
+    if (dimIdxH >= 0) {
+        mmHeightRx.exactMatch(displayArgs.at(dimIdxH));
+        physHeight = mmHeightRx.cap(1).toInt();
+        if (dimIdxW < 0)
+            physWidth = dw*physHeight/dh;
+    }
+    if (dimIdxW < 0 && dimIdxH < 0) {
+        const int dpi = 72;
+        physWidth = qRound(dw * 25.4 / dpi);
+        physHeight = qRound(dh * 25.4 / dpi);
+    }
+}
+
+QVGLiteGraphicsSystem::~QVGLiteGraphicsSystem()
+{
+}
+
+QPixmapData *QVGLiteGraphicsSystem::createPixmapData(QPixmapData::PixelType type) const
+{
+#if !defined(QVGLite_NO_SINGLE_CONTEXT) && !defined(QVGLite_NO_PIXMAP_DATA)
+    // Pixmaps can use QVGLitePixmapData; bitmaps must use raster.
+    if (type == QPixmapData::PixmapType)
+        return new QVGPixmapData(type);
+    else
+        return new QRasterPixmapData(type);
+#else
+    return new QRasterPixmapData(type);
+#endif
+}
+
+QWindowSurface *QVGLiteGraphicsSystem::createWindowSurface(QWidget *widget) const
+{
+    if (widget->windowType() == Qt::Desktop)
+        return 0;   // Don't create an explicit window surface for the destkop.
+    if (surface) {
+        qWarning() << "QVGLiteGraphicsSystem: only one window surface "
+                      "is supported at a time";
+        return 0;
+    }
+    surface = new QVGLiteWindowSurface
+        (const_cast<QVGLiteGraphicsSystem *>(this), widget);
+    return surface;
+}
+
+QT_END_NAMESPACE