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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

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 &image;
+}
+
+QT_END_NAMESPACE