1 files changed, 98 insertions, 0 deletions
diff --git a/liveview/liveviewpaintengine.cpp b/liveview/liveviewpaintengine.cpp
new file mode 100644
index 0000000..1785d62
--- /dev/null
+++ b/liveview/liveviewpaintengine.cpp
@@ -0,0 +1,98 @@
+#include "liveviewpaintengine.h"
+
+using namespace sowatch;
+
+LiveViewPaintEngine::LiveViewPaintEngine() :
+    WatchPaintEngine()
+{
+
+}
+
+bool LiveViewPaintEngine::begin(QPaintDevice *pdev)
+{
+	_watch = static_cast<LiveView*>(pdev);
+
+	return WatchPaintEngine::begin(_watch->image());
+}
+
+bool LiveViewPaintEngine::end()
+{
+	bool ret = WatchPaintEngine::end();
+	if (ret) {
+		QRect rect = _damaged.boundingRect();
+		if (!rect.isEmpty()) {
+			QImage sub_image = _watch->image()->copy(rect);
+			_watch->renderImage(rect.x(), rect.y(), sub_image);
+		}
+	}
+	return ret;
+}
+
+void LiveViewPaintEngine::drawRects(const QRectF *rects, int rectCount)
+{
+	int i;
+	for (i = 0; i < rectCount; i++) {
+		const QRectF& r = rects[i];
+		if (_hasBrush && fillsEntireImage(r.toRect()) && _isBrushBlack) {
+			_watch->clear();
+			_damaged = QRegion();
+			continue;
+		}
+		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 LiveViewPaintEngine::drawRects(const QRect *rects, int rectCount)
+{
+	int i;
+	for (i = 0; i < rectCount; i++) {
+		const QRect& r = rects[i];
+		if (_hasBrush && fillsEntireImage(r) && _isBrushBlack) {
+			_watch->clear();
+			_damaged = QRegion();
+			continue;
+		}
+		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 LiveViewPaintEngine::updateState(const QPaintEngineState &state)
+{
+	WatchPaintEngine::updateState(state);
+	if (state.state() & QPaintEngine::DirtyBrush) {
+		QBrush brush = state.brush();
+		_isBrushBlack = false;
+		if (brush.style() == Qt::SolidPattern) {
+			const QColor color = brush.color();
+			if (color == Qt::black) {
+				_isBrushBlack = true;
+			}
+		}
+	}
+}
+
+bool LiveViewPaintEngine::fillsEntireImage(const QRect& rect)
+{
+	return rect == _area &&
+			(!_clipEnabled ||
+			 (_clipRegion.numRects() == 1 && _clipRegion.rects().at(0) == _area));
+}