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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 <private/qemulationpaintengine_p.h>
#include <private/qpainter_p.h>
#include <private/qtextengine_p.h>
#include <qdebug.h>
QT_BEGIN_NAMESPACE
QEmulationPaintEngine::QEmulationPaintEngine(QPaintEngineEx *engine)
: real_engine(engine)
{
QPaintEngine::state = real_engine->state();
}
QPaintEngine::Type QEmulationPaintEngine::type() const
{
return real_engine->type();
}
bool QEmulationPaintEngine::begin(QPaintDevice *)
{
return true;
}
bool QEmulationPaintEngine::end()
{
return true;
}
QPainterState *QEmulationPaintEngine::createState(QPainterState *orig) const
{
return real_engine->createState(orig);
}
static inline void combineXForm(QBrush *brush, const QRectF &r)
{
QTransform t(r.width(), 0, 0, r.height(), r.x(), r.y());
if (brush->gradient() && brush->gradient()->coordinateMode() != QGradient::ObjectMode)
brush->setTransform(t * brush->transform()); // compat mode
else
brush->setTransform(brush->transform() * t);
}
void QEmulationPaintEngine::fill(const QVectorPath &path, const QBrush &brush)
{
QPainterState *s = state();
if (s->bgMode == Qt::OpaqueMode) {
Qt::BrushStyle style = brush.style();
if ((style >= Qt::Dense1Pattern && style <= Qt::DiagCrossPattern) || (style == Qt::TexturePattern ))
real_engine->fill(path, s->bgBrush);
}
Qt::BrushStyle style = qbrush_style(brush);
if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern) {
QGradient::CoordinateMode coMode = brush.gradient()->coordinateMode();
if (coMode > QGradient::LogicalMode) {
QBrush copy = brush;
const QPaintDevice *d = real_engine->painter()->device();
QRectF r = (coMode == QGradient::StretchToDeviceMode) ? QRectF(0, 0, d->width(), d->height()) : path.controlPointRect();
combineXForm(©, r);
real_engine->fill(path, copy);
return;
}
} else if (style == Qt::TexturePattern) {
qreal dpr = qHasPixmapTexture(brush) ? brush.texture().devicePixelRatio() : brush.textureImage().devicePixelRatio();
if (!qFuzzyCompare(dpr, qreal(1.0))) {
QBrush copy = brush;
combineXForm(©, QRectF(0, 0, 1.0/dpr, 1.0/dpr));
real_engine->fill(path, copy);
return;
}
}
real_engine->fill(path, brush);
}
void QEmulationPaintEngine::stroke(const QVectorPath &path, const QPen &pen)
{
QPainterState *s = state();
if (s->bgMode == Qt::OpaqueMode && pen.style() > Qt::SolidLine) {
QPen bgPen = pen;
bgPen.setBrush(s->bgBrush);
bgPen.setStyle(Qt::SolidLine);
real_engine->stroke(path, bgPen);
}
QBrush brush = pen.brush();
QPen copy = pen;
Qt::BrushStyle style = qbrush_style(brush);
if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern ) {
QGradient::CoordinateMode coMode = brush.gradient()->coordinateMode();
if (coMode > QGradient::LogicalMode) {
const QPaintDevice *d = real_engine->painter()->device();
QRectF r = (coMode == QGradient::StretchToDeviceMode) ? QRectF(0, 0, d->width(), d->height()) : path.controlPointRect();
combineXForm(&brush, r);
copy.setBrush(brush);
real_engine->stroke(path, copy);
return;
}
}
real_engine->stroke(path, pen);
}
void QEmulationPaintEngine::clip(const QVectorPath &path, Qt::ClipOperation op)
{
real_engine->clip(path, op);
}
void QEmulationPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
{
if (state()->bgMode == Qt::OpaqueMode && pm.isQBitmap())
fillBGRect(r);
real_engine->drawPixmap(r, pm, sr);
}
void QEmulationPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
{
if (state()->bgMode == Qt::OpaqueMode) {
const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
QRectF rect(p.x(), p.y() - ti.ascent.toReal(), ti.width.toReal(), (ti.ascent + ti.descent).toReal());
fillBGRect(rect);
}
QPainterState *s = state();
Qt::BrushStyle style = qbrush_style(s->pen.brush());
if (style >= Qt::LinearGradientPattern && style <= Qt::ConicalGradientPattern)
{
QPen savedPen = s->pen;
QGradient g = *s->pen.brush().gradient();
if (g.coordinateMode() > QGradient::LogicalMode) {
QBrush copy = s->pen.brush();
const QPaintDevice *d = real_engine->painter()->device();
const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
QRectF r = (g.coordinateMode() == QGradient::StretchToDeviceMode) ?
QRectF(0, 0, d->width(), d->height()) :
QRectF(p.x(), p.y() - ti.ascent.toReal(), ti.width.toReal(), (ti.ascent + ti.descent + 1).toReal());
combineXForm(©, r);
g.setCoordinateMode(QGradient::LogicalMode);
QBrush brush(g);
brush.setTransform(copy.transform());
s->pen.setBrush(brush);
penChanged();
real_engine->drawTextItem(p, textItem);
s->pen = savedPen;
penChanged();
return;
}
}
real_engine->drawTextItem(p, textItem);
}
void QEmulationPaintEngine::drawStaticTextItem(QStaticTextItem *item)
{
real_engine->drawStaticTextItem(item);
}
void QEmulationPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s)
{
if (state()->bgMode == Qt::OpaqueMode && pixmap.isQBitmap())
fillBGRect(r);
real_engine->drawTiledPixmap(r, pixmap, s);
}
void QEmulationPaintEngine::drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags flags)
{
real_engine->drawImage(r, pm, sr, flags);
}
void QEmulationPaintEngine::clipEnabledChanged()
{
real_engine->clipEnabledChanged();
}
void QEmulationPaintEngine::penChanged()
{
real_engine->penChanged();
}
void QEmulationPaintEngine::brushChanged()
{
real_engine->brushChanged();
}
void QEmulationPaintEngine::brushOriginChanged()
{
real_engine->brushOriginChanged();
}
void QEmulationPaintEngine::opacityChanged()
{
real_engine->opacityChanged();
}
void QEmulationPaintEngine::compositionModeChanged()
{
real_engine->compositionModeChanged();
}
void QEmulationPaintEngine::renderHintsChanged()
{
real_engine->renderHintsChanged();
}
void QEmulationPaintEngine::transformChanged()
{
real_engine->transformChanged();
}
void QEmulationPaintEngine::setState(QPainterState *s)
{
QPaintEngine::state = s;
real_engine->setState(s);
}
void QEmulationPaintEngine::beginNativePainting()
{
real_engine->beginNativePainting();
}
void QEmulationPaintEngine::endNativePainting()
{
real_engine->endNativePainting();
}
void QEmulationPaintEngine::fillBGRect(const QRectF &r)
{
qreal pts[] = { r.x(), r.y(), r.x() + r.width(), r.y(),
r.x() + r.width(), r.y() + r.height(), r.x(), r.y() + r.height() };
QVectorPath vp(pts, 4, nullptr, QVectorPath::RectangleHint);
real_engine->fill(vp, state()->bgBrush);
}
QT_END_NAMESPACE
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