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Diffstat (limited to 'src/gui/image/qpixmap_raster.cpp')
| -rw-r--r-- | src/gui/image/qpixmap_raster.cpp | 492 |
1 files changed, 492 insertions, 0 deletions
diff --git a/src/gui/image/qpixmap_raster.cpp b/src/gui/image/qpixmap_raster.cpp new file mode 100644 index 0000000000..0a4d921795 --- /dev/null +++ b/src/gui/image/qpixmap_raster.cpp @@ -0,0 +1,492 @@ +/**************************************************************************** +** +** 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 QtGui 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 "qpixmap.h" + +#include <private/qfont_p.h> + +#include "qpixmap_raster_p.h" +#include "qnativeimage_p.h" +#include "qimage_p.h" +#include "qpaintengine.h" + +#include "qbitmap.h" +#include "qimage.h" +#include <QBuffer> +#include <QImageReader> +#include <private/qimage_p.h> +#include <private/qsimd_p.h> +#include <private/qwidget_p.h> +#include <private/qdrawhelper_p.h> + +QT_BEGIN_NAMESPACE + +const uchar qt_pixmap_bit_mask[] = { 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80 }; + +QPixmap qt_toRasterPixmap(const QImage &image) +{ + QPixmapData *data = + new QRasterPixmapData(image.depth() == 1 + ? QPixmapData::BitmapType + : QPixmapData::PixmapType); + + data->fromImage(image, Qt::AutoColor); + + return QPixmap(data); +} + +QPixmap qt_toRasterPixmap(const QPixmap &pixmap) +{ + if (pixmap.isNull()) + return QPixmap(); + + if (QPixmap(pixmap).data_ptr()->classId() == QPixmapData::RasterClass) + return pixmap; + + return qt_toRasterPixmap(pixmap.toImage()); +} + +QRasterPixmapData::QRasterPixmapData(PixelType type) + : QPixmapData(type, RasterClass) +{ +} + +QRasterPixmapData::~QRasterPixmapData() +{ +} + +QPixmapData *QRasterPixmapData::createCompatiblePixmapData() const +{ + return new QRasterPixmapData(pixelType()); +} + +void QRasterPixmapData::resize(int width, int height) +{ + QImage::Format format; +#ifdef Q_WS_QWS + if (pixelType() == BitmapType) { + format = QImage::Format_Mono; + } else { + format = QScreen::instance()->pixelFormat(); + if (format == QImage::Format_Invalid) + format = QImage::Format_ARGB32_Premultiplied; + else if (format == QImage::Format_Indexed8) // currently not supported + format = QImage::Format_RGB444; + } +#else + if (pixelType() == BitmapType) + format = QImage::Format_MonoLSB; + else + format = QNativeImage::systemFormat(); +#endif + + image = QImage(width, height, format); + w = width; + h = height; + d = image.depth(); + is_null = (w <= 0 || h <= 0); + + if (pixelType() == BitmapType && !image.isNull()) { + image.setColorCount(2); + image.setColor(0, QColor(Qt::color0).rgba()); + image.setColor(1, QColor(Qt::color1).rgba()); + } + + setSerialNumber(image.serialNumber()); +} + +bool QRasterPixmapData::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, /* inplace = */true); + return !isNull(); +} + +void QRasterPixmapData::fromImage(const QImage &sourceImage, + Qt::ImageConversionFlags flags) +{ + Q_UNUSED(flags); + QImage image = sourceImage; + createPixmapForImage(image, flags, /* inplace = */false); +} + +void QRasterPixmapData::fromImageReader(QImageReader *imageReader, + Qt::ImageConversionFlags flags) +{ + Q_UNUSED(flags); + QImage image = imageReader->read(); + if (image.isNull()) + return; + + createPixmapForImage(image, flags, /* inplace = */true); +} + +// from qwindowsurface.cpp +extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset); + +void QRasterPixmapData::copy(const QPixmapData *data, const QRect &rect) +{ + fromImage(data->toImage(rect).copy(), Qt::NoOpaqueDetection); +} + +bool QRasterPixmapData::scroll(int dx, int dy, const QRect &rect) +{ + if (!image.isNull()) + qt_scrollRectInImage(image, rect, QPoint(dx, dy)); + return true; +} + +void QRasterPixmapData::fill(const QColor &color) +{ + uint pixel; + + if (image.depth() == 1) { + int gray = qGray(color.rgba()); + // Pick the best approximate color in the image's colortable. + if (qAbs(qGray(image.color(0)) - gray) < qAbs(qGray(image.color(1)) - gray)) + pixel = 0; + else + pixel = 1; + } else if (image.depth() >= 15) { + int alpha = color.alpha(); + if (alpha != 255) { + if (!image.hasAlphaChannel()) { + QImage::Format toFormat; +#if !(defined(QT_HAVE_NEON) || defined(QT_ALWAYS_HAVE_SSE2)) + if (image.format() == QImage::Format_RGB16) + toFormat = QImage::Format_ARGB8565_Premultiplied; + else if (image.format() == QImage::Format_RGB666) + toFormat = QImage::Format_ARGB6666_Premultiplied; + else if (image.format() == QImage::Format_RGB555) + toFormat = QImage::Format_ARGB8555_Premultiplied; + else if (image.format() == QImage::Format_RGB444) + toFormat = QImage::Format_ARGB4444_Premultiplied; + else +#endif + toFormat = QImage::Format_ARGB32_Premultiplied; + + if (!image.isNull() && qt_depthForFormat(image.format()) == qt_depthForFormat(toFormat)) { + image.detach(); + image.d->format = toFormat; + } else { + image = QImage(image.width(), image.height(), toFormat); + } + } + + switch (image.format()) { + case QImage::Format_ARGB8565_Premultiplied: + pixel = qargb8565(color.rgba()).rawValue(); + break; + case QImage::Format_ARGB8555_Premultiplied: + pixel = qargb8555(color.rgba()).rawValue(); + break; + case QImage::Format_ARGB6666_Premultiplied: + pixel = qargb6666(color.rgba()).rawValue(); + break; + case QImage::Format_ARGB4444_Premultiplied: + pixel = qargb4444(color.rgba()).rawValue(); + break; + default: + pixel = PREMUL(color.rgba()); + break; + } + } else { + switch (image.format()) { + case QImage::Format_RGB16: + pixel = qt_colorConvert<quint16, quint32>(color.rgba(), 0); + break; + case QImage::Format_RGB444: + pixel = qrgb444(color.rgba()).rawValue(); + break; + case QImage::Format_RGB555: + pixel = qrgb555(color.rgba()).rawValue(); + break; + case QImage::Format_RGB666: + pixel = qrgb666(color.rgba()).rawValue(); + break; + case QImage::Format_RGB888: + pixel = qrgb888(color.rgba()).rawValue(); + break; + default: + pixel = color.rgba(); + break; + } + } + } else { + pixel = 0; + // ### what about 8 bits + } + + image.fill(pixel); +} + +void QRasterPixmapData::setMask(const QBitmap &mask) +{ + if (mask.size().isEmpty()) { + if (image.depth() != 1) { // hw: ???? + image = image.convertToFormat(QImage::Format_RGB32); + } + } else { + const int w = image.width(); + const int h = image.height(); + + switch (image.depth()) { + case 1: { + const QImage imageMask = mask.toImage().convertToFormat(image.format()); + for (int y = 0; y < h; ++y) { + const uchar *mscan = imageMask.scanLine(y); + uchar *tscan = image.scanLine(y); + int bytesPerLine = image.bytesPerLine(); + for (int i = 0; i < bytesPerLine; ++i) + tscan[i] &= mscan[i]; + } + break; + } + default: { + const QImage imageMask = mask.toImage().convertToFormat(QImage::Format_MonoLSB); + image = image.convertToFormat(QImage::Format_ARGB32_Premultiplied); + for (int y = 0; y < h; ++y) { + const uchar *mscan = imageMask.scanLine(y); + QRgb *tscan = (QRgb *)image.scanLine(y); + for (int x = 0; x < w; ++x) { + if (!(mscan[x>>3] & qt_pixmap_bit_mask[x&7])) + tscan[x] = 0; + } + } + break; + } + } + } +} + +bool QRasterPixmapData::hasAlphaChannel() const +{ + return image.hasAlphaChannel(); +} + +QImage QRasterPixmapData::toImage() const +{ + if (!image.isNull()) { + QImageData *data = const_cast<QImage &>(image).data_ptr(); + if (data->paintEngine && data->paintEngine->isActive() + && data->paintEngine->paintDevice() == &image) + { + return image.copy(); + } + } + + return image; +} + +QImage QRasterPixmapData::toImage(const QRect &rect) const +{ + if (rect.isNull()) + return image; + + QRect clipped = rect.intersected(QRect(0, 0, w, h)); + if (d % 8 == 0) + return QImage(image.scanLine(clipped.y()) + clipped.x() * (d / 8), + clipped.width(), clipped.height(), + image.bytesPerLine(), image.format()); + else + return image.copy(clipped); +} + +void QRasterPixmapData::setAlphaChannel(const QPixmap &alphaChannel) +{ + image.setAlphaChannel(alphaChannel.toImage()); +} + +QPaintEngine* QRasterPixmapData::paintEngine() const +{ + return image.paintEngine(); +} + +int QRasterPixmapData::metric(QPaintDevice::PaintDeviceMetric metric) const +{ + QImageData *d = image.d; + if (!d) + return 0; + + // override the image dpi with the screen dpi when rendering to a pixmap + switch (metric) { + case QPaintDevice::PdmWidth: + return w; + case QPaintDevice::PdmHeight: + return h; + case QPaintDevice::PdmWidthMM: + return qRound(d->width * 25.4 / qt_defaultDpiX()); + case QPaintDevice::PdmHeightMM: + return qRound(d->height * 25.4 / qt_defaultDpiY()); + case QPaintDevice::PdmNumColors: + return d->colortable.size(); + case QPaintDevice::PdmDepth: + return this->d; + case QPaintDevice::PdmDpiX: // fall-through + case QPaintDevice::PdmPhysicalDpiX: + return qt_defaultDpiX(); + case QPaintDevice::PdmDpiY: // fall-through + case QPaintDevice::PdmPhysicalDpiY: + return qt_defaultDpiY(); + default: + qWarning("QRasterPixmapData::metric(): Unhandled metric type %d", metric); + break; + } + + return 0; +} + +void QRasterPixmapData::createPixmapForImage(QImage &sourceImage, Qt::ImageConversionFlags flags, bool inPlace) +{ + QImage::Format format; + if (flags & Qt::NoFormatConversion) + format = sourceImage.format(); + else +#ifdef Q_WS_QWS + if (pixelType() == BitmapType) { + format = QImage::Format_Mono; + } else { + format = QScreen::instance()->pixelFormat(); + if (format == QImage::Format_Invalid) + format = QImage::Format_ARGB32_Premultiplied; + else if (format == QImage::Format_Indexed8) // currently not supported + format = QImage::Format_RGB444; + } + + if (sourceImage.hasAlphaChannel() + && ((flags & Qt::NoOpaqueDetection) + || const_cast<QImage &>(sourceImage).data_ptr()->checkForAlphaPixels())) { + switch (format) { + case QImage::Format_RGB16: + format = QImage::Format_ARGB8565_Premultiplied; + break; + case QImage::Format_RGB666: + format = QImage::Format_ARGB6666_Premultiplied; + break; + case QImage::Format_RGB555: + format = QImage::Format_ARGB8555_Premultiplied; + break; + case QImage::Format_RGB444: + format = QImage::Format_ARGB4444_Premultiplied; + break; + default: + format = QImage::Format_ARGB32_Premultiplied; + break; + } + } else if (format == QImage::Format_Invalid) { + format = QImage::Format_ARGB32_Premultiplied; + } +#else + if (pixelType() == BitmapType) { + format = QImage::Format_MonoLSB; + } else { + if (sourceImage.depth() == 1) { + format = sourceImage.hasAlphaChannel() + ? QImage::Format_ARGB32_Premultiplied + : QImage::Format_RGB32; + } else { + QImage::Format opaqueFormat = QNativeImage::systemFormat(); + QImage::Format alphaFormat = QImage::Format_ARGB32_Premultiplied; + +#if !defined(QT_HAVE_NEON) && !defined(QT_ALWAYS_HAVE_SSE2) + switch (opaqueFormat) { + case QImage::Format_RGB16: + alphaFormat = QImage::Format_ARGB8565_Premultiplied; + break; + default: // We don't care about the others... + break; + } +#endif + + if (!sourceImage.hasAlphaChannel()) { + format = opaqueFormat; + } else if ((flags & Qt::NoOpaqueDetection) == 0 + && !const_cast<QImage &>(sourceImage).data_ptr()->checkForAlphaPixels()) + { + // image has alpha format but is really opaque, so try to do a + // more efficient conversion + if (sourceImage.format() == QImage::Format_ARGB32 + || sourceImage.format() == QImage::Format_ARGB32_Premultiplied) + { + if (!inPlace) + sourceImage.detach(); + sourceImage.d->format = QImage::Format_RGB32; + } + format = opaqueFormat; + } else { + format = alphaFormat; + } + } + } +#endif + + if (inPlace && sourceImage.d->convertInPlace(format, flags)) { + image = sourceImage; + } else { + image = sourceImage.convertToFormat(format); + } + + if (image.d) { + w = image.d->width; + h = image.d->height; + d = image.d->depth; + } else { + w = h = d = 0; + } + is_null = (w <= 0 || h <= 0); + + setSerialNumber(image.serialNumber()); +} + +QImage* QRasterPixmapData::buffer() +{ + return ℑ +} + +QT_END_NAMESPACE |