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/****************************************************************************
**
** 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 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
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