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Diffstat (limited to 'src/gui/image/qpixmapdata.cpp')
| -rw-r--r-- | src/gui/image/qpixmapdata.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/gui/image/qpixmapdata.cpp b/src/gui/image/qpixmapdata.cpp new file mode 100644 index 0000000..3d88f4b --- /dev/null +++ b/src/gui/image/qpixmapdata.cpp @@ -0,0 +1,179 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qpixmapdata_p.h" +#include <QtGui/qbitmap.h> +#include <QtGui/qimagereader.h> + +QT_BEGIN_NAMESPACE + +const uchar qt_pixmap_bit_mask[] = { 0x01, 0x02, 0x04, 0x08, + 0x10, 0x20, 0x40, 0x80 }; + +QPixmapData::QPixmapData(PixelType pixelType, int objectId) + : ref(0), detach_no(0), type(pixelType), id(objectId), ser_no(0), is_cached(false) +{ + +} + +QPixmapData::~QPixmapData() +{ +} + +void QPixmapData::fromFile(const QString &fileName, const char *format, + Qt::ImageConversionFlags flags) +{ + const QImage image = QImageReader(fileName, format).read(); + if (image.isNull()) + return; + + fromImage(image, flags); +} + +void QPixmapData::copy(const QPixmapData *data, const QRect &rect) +{ + fromImage(data->toImage().copy(rect), Qt::AutoColor); +} + +void QPixmapData::setMask(const QBitmap &mask) +{ + if (mask.size().isEmpty()) { + if (depth() != 1) + fromImage(toImage().convertToFormat(QImage::Format_RGB32), + Qt::AutoColor); + } else { + QImage image = toImage(); + 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; + } + } + fromImage(image, Qt::AutoColor); + } +} + +QBitmap QPixmapData::mask() const +{ + if (!hasAlphaChannel()) + return QBitmap(); + + const QImage img = toImage(); + const QImage image = (img.depth() < 32 ? img.convertToFormat(QImage::Format_ARGB32_Premultiplied) : img); + const int w = image.width(); + const int h = image.height(); + + QImage mask(w, h, QImage::Format_MonoLSB); + if (mask.isNull()) // allocation failed + return QBitmap(); + + mask.setNumColors(2); + mask.setColor(0, QColor(Qt::color0).rgba()); + mask.setColor(1, QColor(Qt::color1).rgba()); + + const int bpl = mask.bytesPerLine(); + + for (int y = 0; y < h; ++y) { + const QRgb *src = reinterpret_cast<const QRgb*>(image.scanLine(y)); + uchar *dest = mask.scanLine(y); + memset(dest, 0, bpl); + for (int x = 0; x < w; ++x) { + if (qAlpha(*src) > 0) + dest[x >> 3] |= qt_pixmap_bit_mask[x & 7]; + ++src; + } + } + + return QBitmap::fromImage(mask); +} + +QPixmap QPixmapData::transformed(const QTransform &matrix, + Qt::TransformationMode mode) const +{ + return QPixmap::fromImage(toImage().transformed(matrix, mode)); +} + +void QPixmapData::setAlphaChannel(const QPixmap &alphaChannel) +{ + QImage image = toImage(); + image.setAlphaChannel(alphaChannel.toImage()); + fromImage(image, Qt::AutoColor); +} + +QPixmap QPixmapData::alphaChannel() const +{ + return QPixmap::fromImage(toImage().alphaChannel()); +} + +void QPixmapData::setSerialNumber(int serNo) +{ + ser_no = serNo; +} + +QImage* QPixmapData::buffer() +{ + return 0; +} + +QT_END_NAMESPACE |