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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qplatformpixmap.h"
#include <qpa/qplatformintegration.h>
#include <QtCore/qbuffer.h>
#include <QtGui/qbitmap.h>
#include <QtGui/qimagereader.h>
#include <private/qguiapplication_p.h>
#include <private/qimagepixmapcleanuphooks_p.h>
QT_BEGIN_NAMESPACE
/*!
\class QPlatformPixmap
\since 5.0
\internal
\preliminary
\ingroup qpa
\brief The QPlatformPixmap class provides an abstraction for native pixmaps.
*/
QPlatformPixmap *QPlatformPixmap::create(int w, int h, PixelType type)
{
if (Q_UNLIKELY(!QGuiApplicationPrivate::platformIntegration()))
qFatal("QPlatformPixmap: QGuiApplication required");
QPlatformPixmap *data = QGuiApplicationPrivate::platformIntegration()->createPlatformPixmap(static_cast<QPlatformPixmap::PixelType>(type));
data->resize(w, h);
return data;
}
QPlatformPixmap::QPlatformPixmap(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)
{
}
QPlatformPixmap::~QPlatformPixmap()
{
// Sometimes the pixmap cleanup hooks will be called from derived classes, which will
// then set is_cached to false. For example, on X11 Qt GUI needs to delete the GLXPixmap
// or EGL Pixmap Surface for a given pixmap _before_ the native X11 pixmap is deleted,
// otherwise some drivers will leak the GL surface. In this case, QX11PlatformPixmap will
// call the cleanup hooks itself before deleting the native pixmap and set is_cached to
// false.
if (is_cached) {
QImagePixmapCleanupHooks::executePlatformPixmapDestructionHooks(this);
is_cached = false;
}
}
QPlatformPixmap *QPlatformPixmap::createCompatiblePlatformPixmap() const
{
QPlatformPixmap *d = QGuiApplicationPrivate::platformIntegration()->createPlatformPixmap(pixelType());
return d;
}
static QImage makeBitmapCompliantIfNeeded(QPlatformPixmap *d, QImage image, Qt::ImageConversionFlags flags)
{
if (d->pixelType() == QPlatformPixmap::BitmapType) {
QImage img = std::move(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;
}
void QPlatformPixmap::fromImageReader(QImageReader *imageReader,
Qt::ImageConversionFlags flags)
{
const QImage image = imageReader->read();
fromImage(image, flags);
}
bool QPlatformPixmap::fromFile(const QString &fileName, const char *format,
Qt::ImageConversionFlags flags)
{
QImage image = QImageReader(fileName, format).read();
if (image.isNull())
return false;
fromImage(makeBitmapCompliantIfNeeded(this, std::move(image), flags), flags);
return !isNull();
}
bool QPlatformPixmap::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();
if (image.isNull())
return false;
fromImage(makeBitmapCompliantIfNeeded(this, std::move(image), flags), flags);
return !isNull();
}
void QPlatformPixmap::copy(const QPlatformPixmap *data, const QRect &rect)
{
fromImage(data->toImage(rect), Qt::NoOpaqueDetection);
}
bool QPlatformPixmap::scroll(int dx, int dy, const QRect &rect)
{
Q_UNUSED(dx);
Q_UNUSED(dy);
Q_UNUSED(rect);
return false;
}
QBitmap QPlatformPixmap::mask() const
{
if (!hasAlphaChannel())
return QBitmap();
QImage img = toImage();
bool shouldConvert = (img.format() != QImage::Format_ARGB32 && img.format() != QImage::Format_ARGB32_Premultiplied);
const QImage image = (shouldConvert ? std::move(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.setDevicePixelRatio(devicePixelRatio());
mask.setColorCount(2);
mask.setColor(0, QColor(Qt::color0).rgba());
mask.setColor(1, QColor(Qt::color1).rgba());
const qsizetype 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] |= (1 << (x & 7));
++src;
}
}
return QBitmap::fromImage(std::move(mask));
}
void QPlatformPixmap::setMask(const QBitmap &mask)
{
QImage image = toImage();
if (mask.size().isEmpty()) {
if (image.depth() != 1) { // hw: ????
image = std::move(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);
qsizetype 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 = std::move(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] & (1 << (x&7))))
tscan[x] = 0;
}
}
break;
}
}
}
fromImage(image, Qt::AutoColor);
}
QPixmap QPlatformPixmap::transformed(const QTransform &matrix,
Qt::TransformationMode mode) const
{
return QPixmap::fromImage(toImage().transformed(matrix, mode));
}
void QPlatformPixmap::setSerialNumber(int serNo)
{
ser_no = serNo;
}
void QPlatformPixmap::setDetachNumber(int detNo)
{
detach_no = detNo;
}
QImage QPlatformPixmap::toImage(const QRect &rect) const
{
if (rect.contains(QRect(0, 0, w, h)))
return toImage();
else
return toImage().copy(rect);
}
QImage* QPlatformPixmap::buffer()
{
return nullptr;
}
QT_END_NAMESPACE
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