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#include <QtCore/QDebug>
#include <math.h>
#include "watchpaintengine.h"
using namespace sowatch;
#define ENABLE_TRACE 0
#if ENABLE_TRACE
#define TRACE(x) x
#else
#define TRACE(x)
#endif
WatchPaintEngine::WatchPaintEngine()
: QPaintEngine(QPaintEngine::AllFeatures),
_painter()
{
}
WatchPaintEngine::~WatchPaintEngine()
{
}
bool WatchPaintEngine::begin(QPaintDevice *pdev)
{
_damaged = QRegion();
_area = QRect(0, 0, pdev->width(), pdev->height());
_hasPen = false;
_penWidth = 0.0;
_hasBrush = false;
_clipEnabled = false;
_clipRegion = _area;
_transform = QTransform();
TRACE(qDebug() << " -- BEGIN FRAME -----");
return _painter.begin(pdev);
}
bool WatchPaintEngine::end()
{
TRACE(qDebug() << " -- END FRAME -------");
TRACE(qDebug() << _damaged << "------");
return _painter.end();
}
void WatchPaintEngine::damageMappedRect(const QRect &r)
{
if (_clipEnabled) {
TRACE(qDebug() << "Damaging" << _clipRegion.intersected(r));
_damaged += _clipRegion.intersected(r);
} else {
TRACE(qDebug() << "Damaging" << r);
_damaged += r;
}
}
void WatchPaintEngine::damageRect(const QRect &r)
{
damageMappedRect(_transform.mapRect(r));
}
void WatchPaintEngine::damageRect(const QRectF &r)
{
damageMappedRect(_transform.mapRect(r).toAlignedRect());
}
void WatchPaintEngine::damagePenStroke(const QLineF &line)
{
if (!_hasPen) return;
const qreal a = line.angle();
const qreal sn = sinf(a);
const qreal cs = cosf(a);
const qreal w = _penWidth == 0.0 ? 1.0 : _penWidth;
const qreal x1 = line.x1();
const qreal x2 = line.x2();
const qreal y1 = line.y1();
const qreal y2 = line.y2();
QPointF p1(x1-(w*sn/2.0f), y1+(w*cs/2.0f));
QPointF p2(x2+(w*sn/2.0f), y2-(w*cs/2.0f));
QRectF r = QRectF(p1, p2).normalized();
damageRect(r);
}
void WatchPaintEngine::updateClipRegion(const QRegion& region, Qt::ClipOperation op)
{
QRegion mapped = _transform.map(region);
switch (op) {
case Qt::NoClip:
_clipEnabled = false;
_clipRegion = _area;
break;
case Qt::ReplaceClip:
_clipEnabled = true;
_clipRegion = mapped;
break;
case Qt::IntersectClip:
_clipEnabled = true;
_clipRegion &= mapped;
break;
case Qt::UniteClip:
_clipEnabled = true;
_clipRegion |= mapped;
break;
}
}
void WatchPaintEngine::drawEllipse(const QRectF &r)
{
TRACE(qDebug() << __func__ << r);
damageRect(r);
_painter.drawEllipse(r);
}
void WatchPaintEngine::drawEllipse(const QRect &r)
{
TRACE(qDebug() << __func__ << r);
damageRect(r);
_painter.drawEllipse(r);
}
void WatchPaintEngine::drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags flags)
{
TRACE(qDebug() << __func__ << r);
damageRect(r);
_painter.drawImage(r, pm, sr, flags);
}
void WatchPaintEngine::drawLines(const QLineF *lines, int lineCount)
{
TRACE(qDebug() << __func__ << lines << lineCount);
int i;
for (i = 0; i < lineCount; i++) {
const QLineF& line = lines[i];
damagePenStroke(line);
}
_painter.drawLines(lines, lineCount);
}
void WatchPaintEngine::drawLines(const QLine *lines, int lineCount)
{
TRACE(qDebug() << __func__ << lines << lineCount);
int i;
for (i = 0; i < lineCount; i++) {
const QLine& line = lines[i];
damagePenStroke(line);
}
_painter.drawLines(lines, lineCount);
}
void WatchPaintEngine::drawPath(const QPainterPath &path)
{
TRACE(qDebug() << __func__ << path);
damageRect(path.boundingRect());
_painter.drawPath(path);
}
void WatchPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr)
{
TRACE(qDebug() << __func__ << r << pm << sr);
damageRect(r);
_painter.drawPixmap(r, pm, sr);
}
void WatchPaintEngine::drawPoints(const QPointF *points, int pointCount)
{
TRACE(qDebug() << __func__ << points);
int i;
for (i = 0; i < pointCount; i++) {
const QPointF& p = points[i];
damageRect(QRectF(p.x() - _penWidth/2.0f, p.y() - _penWidth/2.0f,
_penWidth, _penWidth));
}
_painter.drawPoints(points, pointCount);
}
void WatchPaintEngine::drawPoints(const QPoint *points, int pointCount)
{
TRACE(qDebug() << __func__ << points);
int i;
for (i = 0; i < pointCount; i++) {
const QPoint& p = points[i];
damageRect(QRect(p.x() - _penWidth/2, p.y() - _penWidth/2,
_penWidth, _penWidth));
}
_painter.drawPoints(points, pointCount);
}
void WatchPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode)
{
TRACE(qDebug() << __func__ << points);
QPolygonF p(pointCount);
int i;
for (i = 0; i < pointCount; i++) {
p[i] = points[i];
}
damageRect(p.boundingRect());
_painter.drawPolygon(points, pointCount,
mode == WindingMode ? Qt::WindingFill : Qt::OddEvenFill);
}
void WatchPaintEngine::drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode)
{
TRACE(qDebug() << __func__ << points);
QPolygon p(pointCount);
int i;
for (i = 0; i < pointCount; i++) {
p[i] = points[i];
}
damageRect(p.boundingRect());
_painter.drawPolygon(points, pointCount,
mode == WindingMode ? Qt::WindingFill : Qt::OddEvenFill);
}
void WatchPaintEngine::drawRects(const QRectF *rects, int rectCount)
{
TRACE(qDebug() << __func__ << rects << rectCount);
int i;
for (i = 0; i < rectCount; i++) {
const QRectF& r = rects[i];
if (_hasBrush) {
damageRect(r);
}
if (_hasPen) {
damagePenStroke(QLineF(r.left(), r.top(), r.right(), r.top()));
damagePenStroke(QLineF(r.right(), r.top(), r.right(), r.bottom()));
damagePenStroke(QLineF(r.left(), r.bottom(), r.right(), r.bottom()));
damagePenStroke(QLineF(r.left(), r.top(), r.left(), r.bottom()));
}
}
_painter.drawRects(rects, rectCount);
}
void WatchPaintEngine::drawRects(const QRect *rects, int rectCount)
{
TRACE(qDebug() << __func__ << rects << rectCount);
int i;
for (i = 0; i < rectCount; i++) {
const QRect& r = rects[i];
if (_hasBrush) {
damageRect(r);
}
if (_hasPen) {
damagePenStroke(QLine(r.left(), r.top(), r.right(), r.top()));
damagePenStroke(QLine(r.right(), r.top(), r.right(), r.bottom()));
damagePenStroke(QLine(r.left(), r.bottom(), r.right(), r.bottom()));
damagePenStroke(QLine(r.left(), r.top(), r.left(), r.bottom()));
}
}
_painter.drawRects(rects, rectCount);
}
void WatchPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
{
TRACE(qDebug() << __func__ << p << textItem.text());
const qreal ascent = textItem.ascent();
const qreal descent = textItem.descent();
const qreal w = textItem.width();
damageRect(QRect(p.x(), p.y() - ascent, w, ascent + descent));
_painter.drawTextItem(p, textItem);
}
void WatchPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s)
{
TRACE(qDebug() << __func__ << r << pixmap << s);
damageRect(r);
_painter.drawTiledPixmap(r, pixmap, s);
}
QPaintEngine::Type WatchPaintEngine::type() const
{
return QPaintEngine::Raster;
}
void WatchPaintEngine::updateState(const QPaintEngineState &state)
{
const QPaintEngine::DirtyFlags flags = state.state();
TRACE(qDebug() << __func__ << flags);
if (flags & QPaintEngine::DirtyTransform)
{
TRACE(qDebug() << " " << "DirtyTransform" << state.transform());
_transform = state.transform();
_painter.setTransform(_transform);
}
if (flags & QPaintEngine::DirtyBackground)
{
_painter.setBackground(state.backgroundBrush());
}
if (flags & QPaintEngine::DirtyBackgroundMode)
{
_painter.setBackgroundMode(state.backgroundMode());
}
if (flags & QPaintEngine::DirtyBrush)
{
QBrush brush = state.brush();
_hasBrush = brush.style() != Qt::NoBrush;
_painter.setBrush(brush);
}
if (flags & QPaintEngine::DirtyBrushOrigin)
{
_painter.setBrushOrigin(state.brushOrigin());
}
if (flags & QPaintEngine::DirtyClipEnabled)
{
TRACE(qDebug() << " " << "DirtyClipEnabled" << state.isClipEnabled());
_clipEnabled = state.isClipEnabled();
_painter.setClipping(_clipEnabled);
}
if (flags & QPaintEngine::DirtyClipPath)
{
TRACE(qDebug() << " " << "DirtyClipPath" << state.clipPath().boundingRect());
QRegion region = state.clipPath().boundingRect().toAlignedRect();
updateClipRegion(region, state.clipOperation());
_painter.setClipPath(state.clipPath(), state.clipOperation());
}
if (flags & QPaintEngine::DirtyClipRegion)
{
TRACE(qDebug() << " " << "DirtyClipRegion" << state.clipRegion());
updateClipRegion(state.clipRegion(), state.clipOperation());
_painter.setClipRegion(state.clipRegion(), state.clipOperation());
}
if (flags & QPaintEngine::DirtyCompositionMode)
{
TRACE(qDebug() << " " << "DirtyCompositionMode" << state.compositionMode());
_painter.setCompositionMode(state.compositionMode());
}
if (flags & QPaintEngine::DirtyFont)
{
_painter.setFont(state.font());
}
if (flags & QPaintEngine::DirtyHints)
{
_painter.setRenderHints(state.renderHints());
}
if (flags & QPaintEngine::DirtyPen)
{
QPen pen = state.pen();
_hasPen = pen.style() != Qt::NoPen;
_penWidth = pen.widthF();
_painter.setPen(pen);
}
TRACE(qDebug() << __func__ << "end");
}
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