From 3a755f46d9cf6e3650d40a960d0d0db8c1ad9fa1 Mon Sep 17 00:00:00 2001 From: "Javier S. Pedro" Date: Sat, 17 Sep 2011 03:03:23 +0200 Subject: preparing for library package --- libsowatch/watchpaintengine.cpp | 305 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 305 insertions(+) create mode 100644 libsowatch/watchpaintengine.cpp (limited to 'libsowatch/watchpaintengine.cpp') diff --git a/libsowatch/watchpaintengine.cpp b/libsowatch/watchpaintengine.cpp new file mode 100644 index 0000000..18cfb60 --- /dev/null +++ b/libsowatch/watchpaintengine.cpp @@ -0,0 +1,305 @@ +#include +#include + +#include "watch.h" +#include "watchpaintengine.h" + +using namespace sowatch; + +WatchPaintEngine::WatchPaintEngine(Watch* watch, QImage* image) + : QPaintEngine(QPaintEngine::AllFeatures), + _watch(watch), _painter(), + _hasPen(false), _hasBrush(false), _clipEnabled(false) +{ + Q_UNUSED(image); +} + +bool WatchPaintEngine::begin(QPaintDevice *pdev) +{ + _damaged = QRegion(); + _watch = static_cast(pdev); + + return _painter.begin(&_watch->_image); +} + +bool WatchPaintEngine::end() +{ + bool ret = _painter.end(); + if (ret) { + _watch->update(_damaged.rects().toList()); + } + return ret; +} + +void WatchPaintEngine::damageMappedRect(const QRect &r) +{ + if (_clipEnabled) { + _damaged += _clipRegion.intersected(r); + } else { + _damaged += r; + } +} + +void WatchPaintEngine::damageRect(const QRect &r) +{ + damageMappedRect(_transform.mapRect(r)); +} + +void WatchPaintEngine::damageRect(const QRectF &r) +{ + damageMappedRect(_transform.mapRect(r).toRect()); +} + +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.x1(); + const qreal y2 = line.y2(); + + damageRect(QRectF(x1-(w*sn/2.0f), y1+(w*cs/2.0f), x2+(w*sn/2.0f), y2-(w*cs/2.0f)).normalized()); +} + +void WatchPaintEngine::updateClipRegion(const QRegion& region, Qt::ClipOperation op) +{ + switch(op) { + case Qt::NoClip: + _clipEnabled = false; + _clipRegion = QRegion(0, 0, _watch->width(), _watch->height()); + break; + case Qt::ReplaceClip: + _clipEnabled = true; + _clipRegion = region; + break; + case Qt::IntersectClip: + _clipEnabled = true; + _clipRegion &= region; + break; + case Qt::UniteClip: + _clipEnabled = true; + _clipRegion |= region; + break; + } +} + +void WatchPaintEngine::drawEllipse(const QRectF &r) +{ + damageRect(r); + _painter.drawEllipse(r); +} + +void WatchPaintEngine::drawEllipse(const QRect &r) +{ + damageRect(r); + _painter.drawEllipse(r); +} + +void WatchPaintEngine::drawImage(const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags flags) +{ + damageRect(r); + _painter.drawImage(r, pm, sr, flags); +} + +void WatchPaintEngine::drawLines(const QLineF *lines, int 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) +{ + 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) +{ + damageRect(path.boundingRect()); + _painter.drawPath(path); +} + +void WatchPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) +{ + damageRect(r); + _painter.drawPixmap(r, pm, sr); +} + +void WatchPaintEngine::drawPoints(const QPointF *points, int pointCount) +{ + const qreal penWidth = _painter.pen().widthF(); + int i; + for (i = 0; i < pointCount; i++) { + const QPointF& p = points[i]; + damageRect(QRect(p.x() - penWidth/2, p.y() - penWidth/2, + p.x() + penWidth/2, p.y() + penWidth/2)); + } + _painter.drawPoints(points, pointCount); +} + +void WatchPaintEngine::drawPoints(const QPoint *points, int pointCount) +{ + const qreal penWidth = _painter.pen().widthF(); + int i; + for (i = 0; i < pointCount; i++) { + const QPoint& p = points[i]; + damageRect(QRect(p.x() - penWidth/2, p.y() - penWidth/2, + p.x() + penWidth/2, p.y() + penWidth/2)); + } + _painter.drawPoints(points, pointCount); +} + +void WatchPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) +{ + 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) +{ + 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) +{ + 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) +{ + 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) +{ + const qreal height = textItem.ascent() + textItem.descent(); + damageRect(QRect(p.x(), p.y(), p.x() + textItem.width(), p.y() + height)); + _painter.drawTextItem(p, textItem); +} + +void WatchPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &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(); + 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) + { + _clipEnabled = state.isClipEnabled(); + _painter.setClipping(_clipEnabled); + } + if (flags & QPaintEngine::DirtyClipPath) + { + QRegion region = state.clipPath().boundingRect().toRect(); + updateClipRegion(region, state.clipOperation()); + _painter.setClipPath(state.clipPath(), state.clipOperation()); + } + if (flags & QPaintEngine::DirtyClipRegion) + { + updateClipRegion(state.clipRegion(), state.clipOperation()); + _painter.setClipRegion(state.clipRegion(), state.clipOperation()); + } + if (flags & QPaintEngine::DirtyCompositionMode) + { + _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); + } + if (flags & QPaintEngine::DirtyTransform) + { + _transform = state.transform(); + _painter.setTransform(_transform); + } +} -- cgit v1.2.3