Don't show a negative size canvas.

This is in line with how Rectangle and Image elements
also behave.

Change-Id: I82cd6ecc6d233645bb3fd968f0f81218188a8991
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>

diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp
index 3b1b6d5..1b33680 100644 (file)
--- a/src/quick/items/context2d/qquickcanvasitem.cpp
+++ b/src/quick/items/context2d/qquickcanvasitem.cpp
@@ -683,7 +683,7 @@ QSGNode *QQuickCanvasItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData
 {
     Q_D(QQuickCanvasItem);
 
-    if (!d->context) {
+    if (!d->context || d->canvasWindow.size().isEmpty()) {
         delete oldNode;
         return 0;
     }