Image Image::convertedToFormat (PixelFormat newFormat) const
{
if (image == nullptr || newFormat == image->pixelFormat)
return *this;
const int w = image->width, h = image->height;
const ScopedPointer<ImageType> type (image->createType());
Image newImage (type->create (newFormat, w, h, false));
if (newFormat == SingleChannel)
{
if (! hasAlphaChannel())
{
newImage.clear (getBounds(), Colours::black);
}
else
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelARGB* const src = (const PixelARGB*) srcData.getLinePointer (y);
uint8* const dst = destData.getLinePointer (y);
for (int x = 0; x < w; ++x)
dst[x] = src[x].getAlpha();
}
}
}
else if (image->pixelFormat == SingleChannel && newFormat == Image::ARGB)
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelAlpha* const src = (const PixelAlpha*) srcData.getLinePointer (y);
PixelARGB* const dst = (PixelARGB*) destData.getLinePointer (y);
for (int x = 0; x < w; ++x)
dst[x].set (src[x]);
}
}
else
{
if (hasAlphaChannel())
newImage.clear (getBounds());
Graphics g (newImage);
g.drawImageAt (*this, 0, 0);
}
return newImage;
}
void Image::multiplyAllAlphas (const float amountToMultiplyBy)
{
jassert (hasAlphaChannel());
const BitmapData destData (*this, 0, 0, getWidth(), getHeight(), BitmapData::readWrite);
performPixelOp (destData, AlphaMultiplyOp (amountToMultiplyBy));
}
QPaintEngine* QX11GLPixmapData::paintEngine() const
{
// We need to create the context before beginPaint - do it here:
if (!ctx) {
ctx = new QGLContext(glFormat());
if (ctx->d_func()->eglContext == 0)
ctx->d_func()->eglContext = new QEglContext();
ctx->d_func()->eglContext->openDisplay(0); // ;-)
ctx->d_func()->eglContext->setApi(QEgl::OpenGL);
ctx->d_func()->eglContext->setContext(hasAlphaChannel() ? qPixmapARGBSharedEglContext
: qPixmapRGBSharedEglContext);
}
if (!qt_gl2_engine_for_pixmaps)
qt_gl2_engine_for_pixmaps = new QGL2PaintEngineEx();
// Support multiple painters on multiple pixmaps simultaniously
if (qt_gl2_engine_for_pixmaps->isActive()) {
qWarning("Pixmap paint engine already active");
QPaintEngine* engine = new QGL2PaintEngineEx();
engine->setAutoDestruct(true);
return engine;
}
return qt_gl2_engine_for_pixmaps;
}
QImage QDirectFBPixmapData::toImage() const
{
if (!dfbSurface)
return QImage();
#if 0
// In later versions of DirectFB one can set a flag to tell
// DirectFB not to move the surface to videomemory. When that
// happens we can use this (hopefully faster) codepath
#ifndef QT_NO_DIRECTFB_PREALLOCATED
QImage ret(w, h, QDirectFBScreen::getImageFormat(dfbSurface));
if (IDirectFBSurface *imgSurface = screen->createDFBSurface(ret, QDirectFBScreen::DontTrackSurface)) {
if (hasAlphaChannel()) {
imgSurface->SetBlittingFlags(imgSurface, DSBLIT_BLEND_ALPHACHANNEL);
imgSurface->Clear(imgSurface, 0, 0, 0, 0);
} else {
imgSurface->SetBlittingFlags(imgSurface, DSBLIT_NOFX);
}
imgSurface->Blit(imgSurface, dfbSurface, 0, 0, 0);
#if (Q_DIRECTFB_VERSION >= 0x010000)
imgSurface->ReleaseSource(imgSurface);
#endif
imgSurface->Release(imgSurface);
return ret;
}
#endif
#endif
QDirectFBPixmapData *that = const_cast<QDirectFBPixmapData*>(this);
const QImage *img = that->buffer();
return img->copy();
}
void QBlittablePlatformPixmap::fill(const QColor &color)
{
if (blittable()->capabilities() & QBlittable::AlphaFillRectCapability) {
blittable()->unlock();
blittable()->alphaFillRect(QRectF(0,0,w,h),color,QPainter::CompositionMode_Source);
} else if (color.alpha() == 255 && blittable()->capabilities() & QBlittable::SolidRectCapability) {
blittable()->unlock();
blittable()->fillRect(QRectF(0,0,w,h),color);
} else {
// Need to be backed with an alpha channel now. It would be nice
// if we could just change the format, e.g. when going from
// RGB32 -> ARGB8888.
if (color.alpha() != 255 && !hasAlphaChannel()) {
m_blittable.reset(0);
m_engine.reset(0);
m_alpha = true;
}
uint pixel = PREMUL(color.rgba());
const QPixelLayout *layout = &qPixelLayouts[blittable()->lock()->format()];
Q_ASSERT(layout->convertFromARGB32PM);
layout->convertFromARGB32PM(&pixel, &pixel, 1, layout, 0);
//so premultiplied formats are supported and ARGB32 and RGB32
blittable()->lock()->fill(pixel);
}
}
Image Image::convertedToFormat (PixelFormat newFormat) const
{
if (image == nullptr || newFormat == image->format)
return *this;
const int w = image->width, h = image->height;
Image newImage (newFormat, w, h, false, image->getType());
if (newFormat == SingleChannel)
{
if (! hasAlphaChannel())
{
newImage.clear (getBounds(), Colours::black);
}
else
{
const BitmapData destData (newImage, 0, 0, w, h, BitmapData::writeOnly);
const BitmapData srcData (*this, 0, 0, w, h);
for (int y = 0; y < h; ++y)
{
const PixelARGB* src = (const PixelARGB*) srcData.getLinePointer(y);
uint8* dst = destData.getLinePointer (y);
for (int x = w; --x >= 0;)
{
*dst++ = src->getAlpha();
++src;
}
}
}
}
else
{
if (hasAlphaChannel())
newImage.clear (getBounds());
Graphics g (newImage);
g.drawImageAt (*this, 0, 0);
}
return newImage;
}
void Image::multiplyAlphaAt (const int x, const int y, const float multiplier)
{
if (isPositiveAndBelow (x, getWidth()) && isPositiveAndBelow (y, getHeight())
&& hasAlphaChannel())
{
const BitmapData destData (*this, x, y, 1, 1, BitmapData::readWrite);
if (isARGB())
((PixelARGB*) destData.data)->multiplyAlpha (multiplier);
else
*(destData.data) = (uint8) (*(destData.data) * multiplier);
}
}
Image Image::rescaled (const int newWidth, const int newHeight, const Graphics::ResamplingQuality quality) const
{
if (image == nullptr || (image->width == newWidth && image->height == newHeight))
return *this;
Image newImage (image->format, newWidth, newHeight, hasAlphaChannel(), image->getType());
Graphics g (newImage);
g.setImageResamplingQuality (quality);
g.drawImage (*this, 0, 0, newWidth, newHeight, 0, 0, image->width, image->height, false);
return newImage;
}
Image Image::rescaled (const int newWidth, const int newHeight, const Graphics::ResamplingQuality quality) const
{
if (image == nullptr || (image->width == newWidth && image->height == newHeight))
return *this;
const ScopedPointer<ImageType> type (image->createType());
Image newImage (type->create (image->pixelFormat, newWidth, newHeight, hasAlphaChannel()));
Graphics g (newImage);
g.setImageResamplingQuality (quality);
g.drawImage (*this, 0, 0, newWidth, newHeight, 0, 0, image->width, image->height, false);
return newImage;
}
void QDirectFBPixmapData::fill(const QColor &color)
{
if (!serialNumber())
return;
Q_ASSERT(surface);
if (color.alpha() < 255 && !hasAlphaChannel()) {
// convert to surface supporting alpha channel
DFBSurfacePixelFormat format;
surface->GetPixelFormat(surface, &format);
switch (format) {
case DSPF_YUY2:
case DSPF_UYVY:
format = DSPF_AYUV;
break;
#if (Q_DIRECTFB_VERSION >= 0x010100)
case DSPF_RGB444:
format = DSPF_ARGB4444;
break;
case DSPF_RGB555:
#endif
case DSPF_RGB18:
format = DSPF_ARGB6666;
break;
default:
format = DSPF_ARGB;
break;
}
DFBSurfaceDescription description;
description.flags = DFBSurfaceDescriptionFlags(DSDESC_WIDTH |
DSDESC_HEIGHT |
DSDESC_PIXELFORMAT);
surface->GetSize(surface, &description.width, &description.height);
description.pixelformat = format;
surface->Release(surface); // release old surface
IDirectFB *fb = QDirectFBScreen::instance()->dfb();
DFBResult result = fb->CreateSurface(fb, &description, &surface);
if (result != DFB_OK) {
DirectFBError("QDirectFBPixmapData::fill()", result);
setSerialNumber(0);
return;
}
}
surface->Clear(surface, color.red(), color.green(), color.blue(),
color.alpha());
}
void Image::createSolidAreaMask (RectangleList& result, const float alphaThreshold) const
{
if (hasAlphaChannel())
{
const uint8 threshold = (uint8) jlimit (0, 255, roundToInt (alphaThreshold * 255.0f));
SparseSet<int> pixelsOnRow;
const BitmapData srcData (*this, 0, 0, getWidth(), getHeight());
for (int y = 0; y < srcData.height; ++y)
{
pixelsOnRow.clear();
const uint8* lineData = srcData.getLinePointer (y);
if (isARGB())
{
for (int x = 0; x < srcData.width; ++x)
{
if (((const PixelARGB*) lineData)->getAlpha() >= threshold)
pixelsOnRow.addRange (Range<int> (x, x + 1));
lineData += srcData.pixelStride;
}
}
else
{
for (int x = 0; x < srcData.width; ++x)
{
if (*lineData >= threshold)
pixelsOnRow.addRange (Range<int> (x, x + 1));
lineData += srcData.pixelStride;
}
}
for (int i = 0; i < pixelsOnRow.getNumRanges(); ++i)
{
const Range<int> range (pixelsOnRow.getRange (i));
result.add (Rectangle<int> (range.getStart(), y, range.getLength(), 1));
}
result.consolidate();
}
}
else
{
result.add (0, 0, getWidth(), getHeight());
}
}
void QBlittablePixmapData::fill(const QColor &color)
{
if (blittable()->capabilities() & QBlittable::AlphaFillRectCapability) {
blittable()->unlock();
blittable()->alphaFillRect(QRectF(0,0,w,h),color,QPainter::CompositionMode_Source);
} else if (color.alpha() == 255 && blittable()->capabilities() & QBlittable::SolidRectCapability) {
blittable()->unlock();
blittable()->fillRect(QRectF(0,0,w,h),color);
} else {
// Need to be backed with an alpha channel now. It would be nice
// if we could just change the format, e.g. when going from
// RGB32 -> ARGB8888.
if (color.alpha() != 255 && !hasAlphaChannel()) {
m_blittable.reset(0);
m_engine.reset(0);
m_alpha = true;
}
uint pixel;
switch (blittable()->lock()->format()) {
case QImage::Format_ARGB32_Premultiplied:
pixel = PREMUL(color.rgba());
break;
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 = color.rgba();
break;
}
//so premultiplied formats are supported and ARGB32 and RGB32
blittable()->lock()->fill(pixel);
}
}
void GoodThumbSource::generate(base::binary_guard &&guard) {
if (!guard) {
return;
}
const auto data = _document->data();
const auto isWallPaper = _document->isWallPaper();
auto location = _document->location().isEmpty()
? nullptr
: std::make_unique<FileLocation>(_document->location());
if (data.isEmpty() && !location) {
_empty = true;
return;
}
crl::async([
=,
guard = std::move(guard),
location = std::move(location)
]() mutable {
const auto filepath = (location && location->accessEnable())
? location->name()
: QString();
auto result = Prepare(filepath, data, isWallPaper);
auto bytes = QByteArray();
if (!result.isNull()) {
auto buffer = QBuffer(&bytes);
const auto format = (isWallPaper && result.hasAlphaChannel())
? "PNG"
: "JPG";
result.save(&buffer, format, kGoodThumbQuality);
}
if (!filepath.isEmpty()) {
location->accessDisable();
}
const auto bytesSize = bytes.size();
ready(
std::move(guard),
std::move(result),
bytesSize,
std::move(bytes));
});
}
void Image::multiplyAllAlphas (const float amountToMultiplyBy)
{
if (hasAlphaChannel())
{
const BitmapData destData (*this, 0, 0, getWidth(), getHeight(), BitmapData::readWrite);
if (isARGB())
{
for (int y = 0; y < destData.height; ++y)
{
uint8* p = destData.getLinePointer (y);
for (int x = 0; x < destData.width; ++x)
{
((PixelARGB*) p)->multiplyAlpha (amountToMultiplyBy);
p += destData.pixelStride;
}
}
}
else
{
for (int y = 0; y < destData.height; ++y)
{
uint8* p = destData.getLinePointer (y);
for (int x = 0; x < destData.width; ++x)
{
*p = (uint8) (*p * amountToMultiplyBy);
p += destData.pixelStride;
}
}
}
}
else
{
jassertfalse; // can't do this without an alpha-channel!
}
}
