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Diffstat (limited to 'src/openvg/qpixmapdata_vg.cpp')
| -rw-r--r-- | src/openvg/qpixmapdata_vg.cpp | 575 |
1 files changed, 0 insertions, 575 deletions
diff --git a/src/openvg/qpixmapdata_vg.cpp b/src/openvg/qpixmapdata_vg.cpp deleted file mode 100644 index de22db8fa9..0000000000 --- a/src/openvg/qpixmapdata_vg.cpp +++ /dev/null @@ -1,575 +0,0 @@ -/**************************************************************************** -** -** 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 QtOpenVG module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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. -** -** 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. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qpixmapdata_vg_p.h" -#include "qpaintengine_vg_p.h" -#include <QtGui/private/qdrawhelper_p.h> -#if !defined(QT_NO_EGL) -#include <QtGui/private/qegl_p.h> -#endif -#include "qvg_p.h" -#include "qvgimagepool_p.h" -#include <QBuffer> -#include <QImageReader> -#include <QtGui/private/qimage_p.h> -#include <QtGui/private/qnativeimagehandleprovider_p.h> -#include <QtGui/private/qfont_p.h> - -QT_BEGIN_NAMESPACE - -static int qt_vg_pixmap_serial = 0; - -QVGPixmapData::QVGPixmapData(PixelType type) - : QPixmapData(type, OpenVGClass) -{ - Q_ASSERT(type == QPixmapData::PixmapType); - vgImage = VG_INVALID_HANDLE; - vgImageOpacity = VG_INVALID_HANDLE; - cachedOpacity = 1.0f; - recreate = true; - inImagePool = false; - inLRU = false; - failedToAlloc = false; -#if defined(Q_OS_SYMBIAN) - nativeImageHandleProvider = 0; - nativeImageHandle = 0; -#endif -#if !defined(QT_NO_EGL) - context = 0; - qt_vg_register_pixmap(this); -#endif - updateSerial(); -} - -QVGPixmapData::~QVGPixmapData() -{ - destroyImageAndContext(); -#if !defined(QT_NO_EGL) - qt_vg_unregister_pixmap(this); -#endif -} - -void QVGPixmapData::destroyImages() -{ - if (inImagePool) { - QVGImagePool *pool = QVGImagePool::instance(); - if (vgImage != VG_INVALID_HANDLE) - pool->releaseImage(this, vgImage); - if (vgImageOpacity != VG_INVALID_HANDLE) - pool->releaseImage(this, vgImageOpacity); - } else { - if (vgImage != VG_INVALID_HANDLE) - vgDestroyImage(vgImage); - if (vgImageOpacity != VG_INVALID_HANDLE) - vgDestroyImage(vgImageOpacity); - } - vgImage = VG_INVALID_HANDLE; - vgImageOpacity = VG_INVALID_HANDLE; - inImagePool = false; - -#if defined(Q_OS_SYMBIAN) - releaseNativeImageHandle(); -#endif -} - -void QVGPixmapData::destroyImageAndContext() -{ - if (vgImage != VG_INVALID_HANDLE) { - // We need to have a context current to destroy the image. -#if !defined(QT_NO_EGL) - if (!context) - context = qt_vg_create_context(0, QInternal::Pixmap); - if (context->isCurrent()) { - destroyImages(); - } else { - // We don't currently have a widget surface active, but we - // need a surface to make the context current. So use the - // shared pbuffer surface instead. - context->makeCurrent(qt_vg_shared_surface()); - destroyImages(); - context->lazyDoneCurrent(); - } -#else - destroyImages(); -#endif - } else { -#if defined(Q_OS_SYMBIAN) - releaseNativeImageHandle(); -#endif - } -#if !defined(QT_NO_EGL) - if (context) { - qt_vg_destroy_context(context, QInternal::Pixmap); - context = 0; - } -#endif - recreate = true; -} - -QPixmapData *QVGPixmapData::createCompatiblePixmapData() const -{ - return new QVGPixmapData(pixelType()); -} - -bool QVGPixmapData::isValid() const -{ - return (w > 0 && h > 0); -} - -void QVGPixmapData::updateSerial() -{ - setSerialNumber(++qt_vg_pixmap_serial); -} - -void QVGPixmapData::resize(int wid, int ht) -{ - if (w == wid && h == ht) { - updateSerial(); - return; - } - - w = wid; - h = ht; - d = 32; // We always use ARGB_Premultiplied for VG pixmaps. - is_null = (w <= 0 || h <= 0); - source = QVolatileImage(); - recreate = true; - - updateSerial(); -} - -void QVGPixmapData::fromImage(const QImage &image, Qt::ImageConversionFlags flags) -{ - if (image.isNull()) - return; - - QImage img = image; - createPixmapForImage(img, flags, false); -} - -void QVGPixmapData::fromImageReader(QImageReader *imageReader, - Qt::ImageConversionFlags flags) -{ - QImage image = imageReader->read(); - if (image.isNull()) - return; - - createPixmapForImage(image, flags, true); -} - -bool QVGPixmapData::fromFile(const QString &filename, const char *format, - Qt::ImageConversionFlags flags) -{ - QImage image = QImageReader(filename, format).read(); - if (image.isNull()) - return false; - - createPixmapForImage(image, flags, true); - - return !isNull(); -} - -bool QVGPixmapData::fromData(const uchar *buffer, uint len, const char *format, - Qt::ImageConversionFlags flags) -{ - QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buffer), len); - QBuffer b(&a); - b.open(QIODevice::ReadOnly); - QImage image = QImageReader(&b, format).read(); - if (image.isNull()) - return false; - - createPixmapForImage(image, flags, true); - - return !isNull(); -} - -QImage::Format QVGPixmapData::idealFormat(QImage *image, Qt::ImageConversionFlags flags) const -{ - QImage::Format format = sourceFormat(); - int d = image->depth(); - if (d == 1 || d == 16 || d == 24 || (d == 32 && !image->hasAlphaChannel())) - format = QImage::Format_RGB32; - else if (!(flags & Qt::NoOpaqueDetection) && image->data_ptr()->checkForAlphaPixels()) - format = sourceFormat(); - else - format = image->hasAlphaChannel() ? sourceFormat() : QImage::Format_RGB32; - return format; -} - -void QVGPixmapData::createPixmapForImage(QImage &image, Qt::ImageConversionFlags flags, bool inPlace) -{ - resize(image.width(), image.height()); - - QImage::Format format = idealFormat(&image, flags); - - if (inPlace && image.data_ptr()->convertInPlace(format, flags)) { - source = QVolatileImage(image); - } else { - QImage convertedImage = image.convertToFormat(format); - // convertToFormat won't detach the image if format stays the - // same. Detaching is needed to prevent issues with painting - // onto this QPixmap later on. - convertedImage.detach(); - source = QVolatileImage(convertedImage); - } - - recreate = true; -} - -void QVGPixmapData::fill(const QColor &color) -{ - if (!isValid()) - return; - forceToImage(); - if (source.depth() == 1) { - // Pick the best approximate color in the image's colortable. - int gray = qGray(color.rgba()); - if (qAbs(qGray(source.imageRef().color(0)) - gray) - < qAbs(qGray(source.imageRef().color(1)) - gray)) - source.fill(0); - else - source.fill(1); - } else { - source.fill(PREMUL(color.rgba())); - } -} - -bool QVGPixmapData::hasAlphaChannel() const -{ - ensureReadback(true); - if (!source.isNull()) - return source.hasAlphaChannel(); - else - return isValid(); -} - -void QVGPixmapData::setAlphaChannel(const QPixmap &alphaChannel) -{ - if (!isValid()) - return; - forceToImage(); - source.setAlphaChannel(alphaChannel); -} - -QImage QVGPixmapData::toImage() const -{ - if (!isValid()) - return QImage(); - ensureReadback(true); - if (source.isNull()) { - source = QVolatileImage(w, h, sourceFormat()); - recreate = true; - } - return source.toImage(); -} - -void QVGPixmapData::copy(const QPixmapData *data, const QRect &rect) -{ - // toImage() is potentially expensive with QVolatileImage so provide a - // more efficient implementation of copy() that does not rely on it. - if (!data) { - return; - } - if (data->classId() != OpenVGClass) { - fromImage(data->toImage(rect), Qt::NoOpaqueDetection); - return; - } - const QVGPixmapData *pd = static_cast<const QVGPixmapData *>(data); - QRect r = rect; - if (r.isNull() || r.contains(QRect(0, 0, pd->w, pd->h))) { - r = QRect(0, 0, pd->w, pd->h); - } - resize(r.width(), r.height()); - recreate = true; - if (!pd->source.isNull()) { - source = QVolatileImage(r.width(), r.height(), pd->source.format()); - source.copyFrom(&pd->source, r); - } -} - -QImage *QVGPixmapData::buffer() -{ - // Cannot be safely implemented and QVGPixmapData is not (must not be) RasterClass anyway. - return 0; -} - -QPaintEngine* QVGPixmapData::paintEngine() const -{ - // If the application wants to paint into the QPixmap, we first - // force it to QImage format and then paint into that. - // This is simpler than juggling multiple VG contexts. - const_cast<QVGPixmapData *>(this)->forceToImage(); - return source.paintEngine(); -} - -VGImage QVGPixmapData::toVGImage() -{ - if (!isValid() || failedToAlloc) - return VG_INVALID_HANDLE; - -#if !defined(QT_NO_EGL) - // Increase the reference count on the shared context. - if (!context) - context = qt_vg_create_context(0, QInternal::Pixmap); -#endif - - if (recreate && prevSize != QSize(w, h)) - destroyImages(); - else if (recreate) - cachedOpacity = -1.0f; // Force opacity image to be refreshed later. - -#if defined(Q_OS_SYMBIAN) - if (recreate && nativeImageHandleProvider && !nativeImageHandle) { - createFromNativeImageHandleProvider(); - } -#endif - - if (vgImage == VG_INVALID_HANDLE) { - vgImage = QVGImagePool::instance()->createImageForPixmap - (qt_vg_image_to_vg_format(source.format()), w, h, VG_IMAGE_QUALITY_FASTER, this); - - // Bail out if we run out of GPU memory - try again next time. - if (vgImage == VG_INVALID_HANDLE) { - failedToAlloc = true; - return VG_INVALID_HANDLE; - } - - inImagePool = true; - } else if (inImagePool) { - QVGImagePool::instance()->useImage(this); - } - - if (!source.isNull() && recreate) { - source.beginDataAccess(); - vgImageSubData - (vgImage, - source.constBits(), source.bytesPerLine(), - qt_vg_image_to_vg_format(source.format()), 0, 0, w, h); - source.endDataAccess(true); - } - - recreate = false; - prevSize = QSize(w, h); - - return vgImage; -} - -VGImage QVGPixmapData::toVGImage(qreal opacity) -{ -#if !defined(QT_SHIVAVG) - // Force the primary VG image to be recreated if necessary. - if (toVGImage() == VG_INVALID_HANDLE) - return VG_INVALID_HANDLE; - - if (opacity == 1.0f) - return vgImage; - - // Create an alternative image for the selected opacity. - if (vgImageOpacity == VG_INVALID_HANDLE || cachedOpacity != opacity) { - if (vgImageOpacity == VG_INVALID_HANDLE) { - if (inImagePool) { - vgImageOpacity = QVGImagePool::instance()->createImageForPixmap - (VG_sARGB_8888_PRE, w, h, VG_IMAGE_QUALITY_FASTER, this); - } else { - vgImageOpacity = vgCreateImage - (VG_sARGB_8888_PRE, w, h, VG_IMAGE_QUALITY_FASTER); - } - - // Bail out if we run out of GPU memory - try again next time. - if (vgImageOpacity == VG_INVALID_HANDLE) - return VG_INVALID_HANDLE; - } - VGfloat matrix[20] = { - 1.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 1.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 1.0f, 0.0f, - 0.0f, 0.0f, 0.0f, opacity, - 0.0f, 0.0f, 0.0f, 0.0f - }; - vgColorMatrix(vgImageOpacity, vgImage, matrix); - cachedOpacity = opacity; - } - - return vgImageOpacity; -#else - // vgColorMatrix() doesn't work with ShivaVG, so ignore the opacity. - Q_UNUSED(opacity); - return toVGImage(); -#endif -} - -void QVGPixmapData::detachImageFromPool() -{ - if (inImagePool) { - QVGImagePool::instance()->detachImage(this); - inImagePool = false; - } -} - -void QVGPixmapData::hibernate() -{ - // If the image was imported (e.g, from an SgImage under Symbian), then - // skip the hibernation, there is no sense in copying it back to main - // memory because the data is most likely shared between several processes. - bool skipHibernate = (vgImage != VG_INVALID_HANDLE && source.isNull()); -#if defined(Q_OS_SYMBIAN) - // However we have to proceed normally if the image was retrieved via - // a handle provider. - skipHibernate &= !nativeImageHandleProvider; -#endif - if (skipHibernate) - return; - - forceToImage(false); // no readback allowed here - destroyImageAndContext(); -} - -void QVGPixmapData::reclaimImages() -{ - if (!inImagePool) - return; - forceToImage(); - destroyImages(); -} - -int QVGPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const -{ - switch (metric) { - case QPaintDevice::PdmWidth: - return w; - case QPaintDevice::PdmHeight: - return h; - case QPaintDevice::PdmNumColors: - return 0; - case QPaintDevice::PdmDepth: - return d; - case QPaintDevice::PdmWidthMM: - return qRound(w * 25.4 / qt_defaultDpiX()); - case QPaintDevice::PdmHeightMM: - return qRound(h * 25.4 / qt_defaultDpiY()); - case QPaintDevice::PdmDpiX: - case QPaintDevice::PdmPhysicalDpiX: - return qt_defaultDpiX(); - case QPaintDevice::PdmDpiY: - case QPaintDevice::PdmPhysicalDpiY: - return qt_defaultDpiY(); - default: - qWarning("QVGPixmapData::metric(): Invalid metric"); - return 0; - } -} - -// Ensures that the pixmap is backed by some valid data and forces the data to -// be re-uploaded to the VGImage when toVGImage() is called next time. -void QVGPixmapData::forceToImage(bool allowReadback) -{ - if (!isValid()) - return; - - if (allowReadback) - ensureReadback(false); - - if (source.isNull()) - source = QVolatileImage(w, h, sourceFormat()); - - recreate = true; -} - -void QVGPixmapData::ensureReadback(bool readOnly) const -{ - if (vgImage != VG_INVALID_HANDLE && source.isNull()) { - source = QVolatileImage(w, h, sourceFormat()); - source.beginDataAccess(); - vgGetImageSubData(vgImage, source.bits(), source.bytesPerLine(), - qt_vg_image_to_vg_format(source.format()), - 0, 0, w, h); - source.endDataAccess(); - if (readOnly) { - recreate = false; - } else { - // Once we did a readback, the original VGImage must be destroyed - // because it may be shared (e.g. created via SgImage) and a subsequent - // upload of the image data may produce unexpected results. - const_cast<QVGPixmapData *>(this)->destroyImages(); -#if defined(Q_OS_SYMBIAN) - // There is now an own copy of the data so drop the handle provider, - // otherwise toVGImage() would request the handle again, which is wrong. - nativeImageHandleProvider = 0; -#endif - recreate = true; - } - } -} - -QImage::Format QVGPixmapData::sourceFormat() const -{ - return QImage::Format_ARGB32_Premultiplied; -} - -/* - \internal - - Returns the VGImage that is storing the contents of \a pixmap. - Returns VG_INVALID_HANDLE if \a pixmap is not owned by the OpenVG - graphics system or \a pixmap is invalid. - - This function is typically used to access the backing store - for a pixmap when executing raw OpenVG calls. It must only - be used when a QPainter is active and the OpenVG paint engine - is in use by the QPainter. - - \sa {QtOpenVG Module} -*/ -Q_OPENVG_EXPORT VGImage qPixmapToVGImage(const QPixmap& pixmap) -{ - QPixmapData *pd = pixmap.pixmapData(); - if (!pd) - return VG_INVALID_HANDLE; // null QPixmap - if (pd->classId() == QPixmapData::OpenVGClass) { - QVGPixmapData *vgpd = static_cast<QVGPixmapData *>(pd); - if (vgpd->isValid()) - return vgpd->toVGImage(); - } - return VG_INVALID_HANDLE; -} - -QT_END_NAMESPACE |