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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 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 "qpixmapdata_p.h"
#include <QtCore/qbuffer.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)
: w(0),
h(0),
d(0),
is_null(true),
ref(0),
detach_no(0),
type(pixelType),
id(objectId),
ser_no(0),
is_cached(false)
{
}
QPixmapData::~QPixmapData()
{
}
static QImage makeBitmapCompliantIfNeeded(QPixmapData *d, const QImage &image, Qt::ImageConversionFlags flags)
{
if (d->pixelType() == QPixmapData::BitmapType) {
QImage img = image.convertToFormat(QImage::Format_MonoLSB, flags);
// make sure image.color(0) == Qt::color0 (white)
// and image.color(1) == Qt::color1 (black)
const QRgb c0 = QColor(Qt::black).rgb();
const QRgb c1 = QColor(Qt::white).rgb();
if (img.color(0) == c0 && img.color(1) == c1) {
img.invertPixels();
img.setColor(0, c1);
img.setColor(1, c0);
}
return img;
}
return image;
}
bool QPixmapData::fromFile(const QString &fileName, const char *format,
Qt::ImageConversionFlags flags)
{
QImage image = QImageReader(fileName, format).read();
if (image.isNull())
return false;
fromImage(makeBitmapCompliantIfNeeded(this, image, flags), flags);
return !isNull();
}
bool QPixmapData::fromData(const uchar *buf, uint len, const char *format, Qt::ImageConversionFlags flags)
{
QByteArray a = QByteArray::fromRawData(reinterpret_cast<const char *>(buf), len);
QBuffer b(&a);
b.open(QIODevice::ReadOnly);
QImage image = QImageReader(&b, format).read();
fromImage(makeBitmapCompliantIfNeeded(this, image, flags), flags);
return !isNull();
}
void QPixmapData::copy(const QPixmapData *data, const QRect &rect)
{
fromImage(data->toImage().copy(rect), Qt::AutoColor);
}
bool QPixmapData::scroll(int dx, int dy, const QRect &rect)
{
Q_UNUSED(dx);
Q_UNUSED(dy);
Q_UNUSED(rect);
return false;
}
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
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