add tiling support to liveview

2 files changed, 19 insertions, 9 deletions

diff --git a/liveview/liveview.cpp b/liveview/liveview.cpp
index c36f944..58bfb83 100644
--- a/liveview/liveview.cpp
+++ b/liveview/liveview.cpp
@@ -54,9 +54,9 @@ int LiveView::metric(PaintDeviceMetric metric) const
 	case PdmHeightMM:
 		return 24;
 	case PdmNumColors:
-		return 65536;
+		return 256;
 	case PdmDepth:
-		return 16;
+		return 8;
 	case PdmDpiX:
 	case PdmPhysicalDpiX:
 		return 136;
@@ -167,7 +167,8 @@ QImage* LiveView::image()
 
 void LiveView::renderImage(int x, int y, const QImage &image)
 {
-	QByteArray data = encodeImage(image);
+	qDebug() << "Rendering image at" << x << 'x' << y << "of size" << image.size();
+	QByteArray data = encodeImage(image.copy(0,0,64,64));
 	if (!data.isEmpty()) {
 		displayBitmap(x, y, data);
 	}
@@ -226,7 +227,7 @@ QByteArray LiveView::encodeImage(const QImage& image) const
 {
 	QBuffer buffer;
 	buffer.open(QIODevice::WriteOnly);
-	if (image.save(&buffer, "PNG")) {
+	if (image.save(&buffer, "PNG", 0)) {
 		return buffer.buffer();
 	} else {
 		qWarning() << "Failed to encode image";
@@ -286,6 +287,7 @@ void LiveView::displayBitmap(unsigned char x, unsigned char y, const QByteArray
 	data[1] = y;
 	data[2] = 1; // TODO Figure out what this is. Maybe format?
 	data.append(image);
+	qDebug() << "Trying to send" << image.size() << "bytes";
 	send(Message(DisplayBitmap, data));
 }
 
diff --git a/liveview/liveviewpaintengine.cpp b/liveview/liveviewpaintengine.cpp
index 9f7ffec..2370477 100644
--- a/liveview/liveviewpaintengine.cpp
+++ b/liveview/liveviewpaintengine.cpp
@@ -21,9 +21,17 @@ 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);
+
+		const int tile_size = 64;
+		// Have to make tiles
+		for (int x = rect.left(); x < rect.right(); x += tile_size) {
+			for (int y = rect.top(); y < rect.bottom(); y += tile_size) {
+				QRect tile(x, y,
+						   qMin(x + tile_size, rect.right()),
+						   qMin(y + tile_size, rect.bottom()));
+				QImage sub_image = _watch->image()->copy(tile);
+				_watch->renderImage(tile.x(), tile.y(), sub_image);
+			}
 		}
 	}
 	return ret;
@@ -35,7 +43,7 @@ void LiveViewPaintEngine::drawRects(const QRectF *rects, int rectCount)
 	for (i = 0; i < rectCount; i++) {
 		const QRectF& r = rects[i];
 		if (_hasBrush && fillsEntireImage(r.toRect()) && _isBrushBlack) {
-			//_watch->clear();
+			_watch->clear();
 			_damaged = QRegion();
 			continue;
 		}
@@ -58,7 +66,7 @@ void LiveViewPaintEngine::drawRects(const QRect *rects, int rectCount)
 	for (i = 0; i < rectCount; i++) {
 		const QRect& r = rects[i];
 		if (_hasBrush && fillsEntireImage(r) && _isBrushBlack) {
-			//_watch->clear();
+			_watch->clear();
 			_damaged = QRegion();
 			continue;
 		}