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266 lines
8 KiB
C++
266 lines
8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qpixmapdata_p.h"
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#include <QtCore/qbuffer.h>
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#include <QtGui/qbitmap.h>
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#include <QtGui/qimagereader.h>
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#include <qgraphicssystem_p.h>
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#include <qapplication_p.h>
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#include "qguicommon_p.h"
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QT_BEGIN_NAMESPACE
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QPixmapData *QPixmapData::create(int w, int h, PixelType type)
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{
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QPixmapData *data;
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QGraphicsSystem* gs = QApplicationPrivate::graphics_system;
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if (gs)
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data = gs->createPixmapData(static_cast<QPixmapData::PixelType>(type));
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else
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data = QGraphicsSystem::createDefaultPixmapData(static_cast<QPixmapData::PixelType>(type));
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data->resize(w, h);
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return data;
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}
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QPixmapData::QPixmapData(PixelType pixelType, int objectId)
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: w(0),
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h(0),
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d(0),
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is_null(true),
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ref(0),
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detach_no(0),
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type(pixelType),
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id(objectId),
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ser_no(0)
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{
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}
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QPixmapData::~QPixmapData()
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{
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}
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QPixmapData *QPixmapData::createCompatiblePixmapData() const
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{
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QGraphicsSystem *gs = QApplicationPrivate::graphics_system;
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if (gs)
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return gs->createPixmapData(pixelType());
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return QGraphicsSystem::createDefaultPixmapData(pixelType());
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}
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static QImage makeBitmapCompliantIfNeeded(QPixmapData *d, const QImage &image, Qt::ImageConversionFlags flags)
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{
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if (d->pixelType() == QPixmapData::BitmapType) {
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QImage img = image.convertToFormat(QImage::Format_MonoLSB, flags);
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// make sure image.color(0) == Qt::color0 (white)
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// and image.color(1) == Qt::color1 (black)
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const QRgb c0 = QColor(Qt::black).rgb();
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const QRgb c1 = QColor(Qt::white).rgb();
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if (img.color(0) == c0 && img.color(1) == c1) {
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img.invertPixels();
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img.setColor(0, c1);
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img.setColor(1, c0);
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}
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return img;
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}
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return image;
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}
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void QPixmapData::fromImageReader(QImageReader *imageReader,
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Qt::ImageConversionFlags flags)
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{
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const QImage image = imageReader->read();
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fromImage(image, flags);
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}
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bool QPixmapData::fromFile(const QString &fileName, const char *format,
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Qt::ImageConversionFlags flags)
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{
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QImage image = QImageReader(fileName, format).read();
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if (image.isNull())
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return false;
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fromImage(makeBitmapCompliantIfNeeded(this, image, flags), flags);
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return !isNull();
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}
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bool QPixmapData::fromData(const uchar *buf, uint len, const char *format, Qt::ImageConversionFlags flags)
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{
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QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buf), len);
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QBuffer b(&a);
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b.open(QIODevice::ReadOnly);
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QImage image = QImageReader(&b, format).read();
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fromImage(makeBitmapCompliantIfNeeded(this, image, flags), flags);
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return !isNull();
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}
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void QPixmapData::copy(const QPixmapData *data, const QRect &rect)
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{
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fromImage(data->toImage(rect), Qt::NoOpaqueDetection);
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}
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bool QPixmapData::scroll(int dx, int dy, const QRect &rect)
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{
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Q_UNUSED(dx);
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Q_UNUSED(dy);
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Q_UNUSED(rect);
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return false;
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}
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void QPixmapData::setMask(const QBitmap &mask)
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{
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if (mask.size().isEmpty()) {
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if (depth() != 1)
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fromImage(toImage().convertToFormat(QImage::Format_RGB32),
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Qt::AutoColor);
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} else {
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QImage image = toImage();
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const int w = image.width();
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const int h = image.height();
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switch (image.depth()) {
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case 1: {
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const QImage imageMask = mask.toImage().convertToFormat(image.format());
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for (int y = 0; y < h; ++y) {
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const uchar *mscan = imageMask.scanLine(y);
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uchar *tscan = image.scanLine(y);
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int bytesPerLine = image.bytesPerLine();
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for (int i = 0; i < bytesPerLine; ++i)
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tscan[i] &= mscan[i];
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}
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break;
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}
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default: {
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const QImage imageMask = mask.toImage().convertToFormat(QImage::Format_MonoLSB);
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image = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
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for (int y = 0; y < h; ++y) {
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const uchar *mscan = imageMask.scanLine(y);
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QRgb *tscan = (QRgb *)image.scanLine(y);
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for (int x = 0; x < w; ++x) {
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if (!(mscan[x>>3] & qt_pixmap_bit_mask[x&7]))
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tscan[x] = 0;
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}
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}
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break;
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}
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}
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fromImage(image, Qt::AutoColor);
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}
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}
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QBitmap QPixmapData::mask() const
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{
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if (!hasAlphaChannel())
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return QBitmap();
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const QImage img = toImage();
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const QImage image = (img.depth() < 32 ? img.convertToFormat(QImage::Format_ARGB32_Premultiplied) : img);
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const int w = image.width();
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const int h = image.height();
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QImage mask(w, h, QImage::Format_MonoLSB);
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if (mask.isNull()) // allocation failed
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return QBitmap();
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mask.setColorCount(2);
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mask.setColor(0, QColor(Qt::color0).rgba());
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mask.setColor(1, QColor(Qt::color1).rgba());
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const int bpl = mask.bytesPerLine();
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for (int y = 0; y < h; ++y) {
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const QRgb *src = reinterpret_cast<const QRgb*>(image.scanLine(y));
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uchar *dest = mask.scanLine(y);
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memset(dest, 0, bpl);
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for (int x = 0; x < w; ++x) {
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if (qAlpha(*src) > 0)
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dest[x >> 3] |= qt_pixmap_bit_mask[x & 7];
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++src;
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}
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}
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return QBitmap::fromImage(mask);
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}
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QPixmap QPixmapData::transformed(const QTransform &matrix,
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Qt::TransformationMode mode) const
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{
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return QPixmap::fromImage(toImage().transformed(matrix, mode));
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}
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void QPixmapData::setAlphaChannel(const QPixmap &alphaChannel)
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{
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QImage image = toImage();
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image.setAlphaChannel(alphaChannel.toImage());
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fromImage(image, Qt::AutoColor);
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}
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QPixmap QPixmapData::alphaChannel() const
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{
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return QPixmap::fromImage(toImage().alphaChannel());
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}
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void QPixmapData::setSerialNumber(int serNo)
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{
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ser_no = serNo;
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}
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QImage QPixmapData::toImage(const QRect &rect) const
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{
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if (rect.contains(QRect(0, 0, w, h)))
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return toImage();
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else
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return toImage().copy(rect);
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}
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QImage* QPixmapData::buffer()
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{
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return 0;
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}
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QT_END_NAMESPACE
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