Improve how notifications look

1 files changed, 21 insertions, 3 deletions

diff --git a/src/metawatch.cpp b/src/metawatch.cpp
index 9b0bae2..ff05aca 100644
--- a/src/metawatch.cpp
+++ b/src/metawatch.cpp
@@ -155,15 +155,33 @@ void MetaWatch::updateWidgetList(const QList<WidgetInfo> &widgets)
 	}
 }
 
+void MetaWatch::clearModeImage(WatchMode mode, bool black)
+{
+	_transport->sendMessage(MessageLoadTemplate,
+							mode & 0x3,
+							QByteArray(1, black ? 1 : 0));
+}
+
 void MetaWatch::sendModeImage(WatchMode mode, const QImage &image)
 {
+	const int bytesPerLine = image.bytesPerLine();
 	Q_ASSERT(image.width() == 96 && image.height() == 96);
-	Q_ASSERT(image.bytesPerLine() == 12);
-	QByteArray data(1 + image.bytesPerLine(), '\0');//Qt::Uninitialized);
+	Q_ASSERT(bytesPerLine == 12);
+	QByteArray data(1 + bytesPerLine, '\0');
 
 	for (int i = 0; i < image.height(); i++) {
+		const uchar *scanline = image.scanLine(i);
+
+		bool empty = true;
+		for (int j = 0; j < bytesPerLine; j++) {
+			empty &= scanline[j] == 0;
+		}
+		if (empty) {
+			continue;
+		}
+
 		data[0] = i;
-		memcpy(data.data() + 1, image.scanLine(i), image.bytesPerLine());
+		memcpy(data.data() + 1, scanline, bytesPerLine);
 
 		_transport->sendMessage(MessageWriteLcdBuffer,
 								0x10 | (mode & 0x3),