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| author | Thomas Senyk <thomas.senyk@qt.io> | 2022-12-20 10:36:53 +0100 |
|---|---|---|
| committer | Qt Cherry-pick Bot <cherrypick_bot@qt-project.org> | 2023-02-01 16:53:24 +0000 |
| commit | c971455eb6db85ab92e0e15f603b052268cf5caf (patch) | |
| tree | e9aee80baf0e6df8968f711226d5b7a253614782 | |
| parent | a22ea16192495ee7d6cca31b52529c69367f7918 (diff) | |
Fix QQuickCanvasItem in case of invalidateSceneGraph()
Adding requestPaint() at the end of invalidateSceneGraph()
will make sure that painting is trigger properly again,
including the (re-)creation of the painting context.
As that request of painting will also recreate the painting
context, it will also allow the creation of a new QSGNode
Without this patch a nullptr will be returned as QSGNode
until a "proper" dirty or update() happens due to property changes
or explicit update calls.
Change-Id: If1e79d135d3d1f5253cb41a3be1630cfed3865dd
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
(cherry picked from commit 185b0d5f215df0254b38ac8a7dfb72c20ce9bc1e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
| -rw-r--r-- | src/quick/items/context2d/qquickcanvasitem.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp index a6d58fec2c..0eb4fe40d3 100644 --- a/src/quick/items/context2d/qquickcanvasitem.cpp +++ b/src/quick/items/context2d/qquickcanvasitem.cpp @@ -616,6 +616,10 @@ void QQuickCanvasItem::invalidateSceneGraph() d->textureProvider = nullptr; delete d->nodeTexture; d->nodeTexture = nullptr; + + // As we can expect(/hope) that the SG will be "good again", we can requestPaint ( which does 'markDirty(canvasWindow);' ) + // Otherwise this Canvas will be "blank" when SG comes back + requestPaint(); } void QQuickCanvasItem::schedulePolish() |