1 files changed, 82 insertions, 0 deletions
diff --git a/libsowatch/metawatchpaintengine.cpp b/libsowatch/metawatchpaintengine.cpp
new file mode 100644
index 0000000..71ad452
--- /dev/null
+++ b/libsowatch/metawatchpaintengine.cpp
@@ -0,0 +1,82 @@
+#include "metawatch.h"
+#include "metawatchpaintengine.h"
+
+using namespace sowatch;
+
+MetaWatchPaintEngine::MetaWatchPaintEngine(MetaWatch* watch, QImage* image) :
+	WatchPaintEngine(watch, image),	_watch(watch),
+	_imageRect(image->rect())
+{
+}
+
+void MetaWatchPaintEngine::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 | _isBrushWhite)) {
+			_watch->clear(_isBrushWhite);
+			_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 MetaWatchPaintEngine::drawRects(const QRect *rects, int rectCount)
+{
+	int i;
+	for (i = 0; i < rectCount; i++) {
+		const QRect& r = rects[i];
+		if (_hasBrush && fillsEntireImage(r) && (_isBrushBlack | _isBrushWhite)) {
+			_watch->clear(_isBrushWhite);
+			_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 MetaWatchPaintEngine::updateState(const QPaintEngineState &state)
+{
+	WatchPaintEngine::updateState(state);
+	if (state.state() & QPaintEngine::DirtyBrush) {
+		QBrush brush = state.brush();
+		_isBrushBlack = false;
+		_isBrushWhite = false;
+		if (brush.style() == Qt::SolidPattern) {
+			const QColor color = brush.color();
+			if (color == Qt::black) {
+				_isBrushBlack = true;
+			} else if (color == Qt::white) {
+				_isBrushWhite = true;
+			}
+		}
+	}
+}
+
+bool MetaWatchPaintEngine::fillsEntireImage(const QRect& rect)
+{
+	return rect == _imageRect &&
+			(!_clipEnabled ||
+			 (_clipRegion.numRects() == 1 && _clipRegion.rects().at(0) == _imageRect));
+}