From b0ced704bcaeb6dc71622c9ce87b78f3b5bd827c Mon Sep 17 00:00:00 2001 From: Andy Nichols Date: Thu, 2 Feb 2017 14:22:08 +0100 Subject: Canvas Item: Prevent polish loop when calling requestAnimationFrame Currently if you call requestAnimationFrame within the callback given by requestAnimationFrame there is a polish loop. This is however the common way when using Canvas2D in the browser to get screen refresh rate animations. This patch makes sure that polish won't be called when processing polish items by calling polish indirectly. Task-number: QTBUG-55778 Change-Id: Ib96e39f7ca3cecc33609976e9049cc309768f9f7 Reviewed-by: Laszlo Agocs --- src/quick/items/context2d/qquickcanvasitem.cpp | 20 +++++++++++++++++++- src/quick/items/context2d/qquickcanvasitem_p.h | 2 ++ 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'src/quick/items/context2d') diff --git a/src/quick/items/context2d/qquickcanvasitem.cpp b/src/quick/items/context2d/qquickcanvasitem.cpp index b772ed97d2..1167f408f5 100644 --- a/src/quick/items/context2d/qquickcanvasitem.cpp +++ b/src/quick/items/context2d/qquickcanvasitem.cpp @@ -640,6 +640,17 @@ void QQuickCanvasItem::releaseResources() } } +bool QQuickCanvasItem::event(QEvent *event) +{ + switch (event->type()) { + case QEvent::PolishRequest: + polish(); + return true; + default: + return QQuickItem::event(event); + } +} + void QQuickCanvasItem::invalidateSceneGraph() { Q_D(QQuickCanvasItem); @@ -651,6 +662,12 @@ void QQuickCanvasItem::invalidateSceneGraph() d->textureProvider = 0; } +void QQuickCanvasItem::schedulePolish() +{ + auto polishRequestEvent = new QEvent(QEvent::PolishRequest); + QCoreApplication::postEvent(this, polishRequestEvent); +} + void QQuickCanvasItem::componentComplete() { QQuickItem::componentComplete(); @@ -892,8 +909,9 @@ void QQuickCanvasItem::requestAnimationFrame(QQmlV4Function *args) d->animationCallbacks.insert(++id, QV4::PersistentValue(scope.engine, f->asReturnedValue())); + // QTBUG-55778: Calling polish directly here can lead to a polish loop if (isVisible()) - polish(); + schedulePolish(); args->setReturnValue(QV4::Encode(id)); } diff --git a/src/quick/items/context2d/qquickcanvasitem_p.h b/src/quick/items/context2d/qquickcanvasitem_p.h index 8af84d0e7c..217ae9bb69 100644 --- a/src/quick/items/context2d/qquickcanvasitem_p.h +++ b/src/quick/items/context2d/qquickcanvasitem_p.h @@ -182,6 +182,7 @@ private Q_SLOTS: void sceneGraphInitialized(); void checkAnimationCallbacks(); void invalidateSceneGraph(); + void schedulePolish(); protected: void componentComplete() Q_DECL_OVERRIDE; @@ -190,6 +191,7 @@ protected: QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) Q_DECL_OVERRIDE; void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) Q_DECL_OVERRIDE; void releaseResources() Q_DECL_OVERRIDE; + bool event(QEvent *event) Q_DECL_OVERRIDE; private: Q_DECLARE_PRIVATE(QQuickCanvasItem) Q_INVOKABLE void delayedCreate(); -- cgit v1.2.3 From eea43b5cc5aa6fab0d7523f92a83a5f75849782d Mon Sep 17 00:00:00 2001 From: Lars Knoll Date: Tue, 7 Feb 2017 13:37:44 +0100 Subject: Fix a crash in canvas2d when calling some methods This fixes a regression introduced in change 4d23faf34192cef372f846dcf02fd8cc398b14c0, where some return values from functions weren't properly encoded as QV4::Value. Task-number: QTBUG-58683 Change-Id: I9dc5f1eb8f5779c58f8b062b9ae3d02284ab2678 Reviewed-by: Simon Hausmann Reviewed-by: J-P Nurmi --- src/quick/items/context2d/qquickcontext2d.cpp | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'src/quick/items/context2d') diff --git a/src/quick/items/context2d/qquickcontext2d.cpp b/src/quick/items/context2d/qquickcontext2d.cpp index b0c1d50907..e25cc5ccbe 100644 --- a/src/quick/items/context2d/qquickcontext2d.cpp +++ b/src/quick/items/context2d/qquickcontext2d.cpp @@ -1879,7 +1879,7 @@ void QQuickJSContext2D::method_get_lineWidth(const QV4::BuiltinFunction *, QV4:: QV4::Scoped r(scope, callData->thisObject); CHECK_CONTEXT(r) - RETURN_RESULT(r->d()->context->state.lineWidth); + RETURN_RESULT(QV4::Encode(r->d()->context->state.lineWidth)); } void QQuickJSContext2D::method_set_lineWidth(const QV4::BuiltinFunction *, QV4::Scope &scope, QV4::CallData *callData) @@ -1906,7 +1906,7 @@ void QQuickJSContext2D::method_get_miterLimit(const QV4::BuiltinFunction *, QV4: QV4::Scoped r(scope, callData->thisObject); CHECK_CONTEXT(r) - RETURN_RESULT(r->d()->context->state.miterLimit); + RETURN_RESULT(QV4::Encode(r->d()->context->state.miterLimit)); } void QQuickJSContext2D::method_set_miterLimit(const QV4::BuiltinFunction *, QV4::Scope &scope, QV4::CallData *callData) @@ -1933,7 +1933,7 @@ void QQuickJSContext2D::method_get_shadowBlur(const QV4::BuiltinFunction *, QV4: QV4::Scoped r(scope, callData->thisObject); CHECK_CONTEXT(r) - RETURN_RESULT(r->d()->context->state.shadowBlur); + RETURN_RESULT(QV4::Encode(r->d()->context->state.shadowBlur)); } void QQuickJSContext2D::method_set_shadowBlur(const QV4::BuiltinFunction *, QV4::Scope &scope, QV4::CallData *callData) @@ -1990,7 +1990,7 @@ void QQuickJSContext2D::method_get_shadowOffsetX(const QV4::BuiltinFunction *, Q QV4::Scoped r(scope, callData->thisObject); CHECK_CONTEXT(r) - RETURN_RESULT(r->d()->context->state.shadowOffsetX); + RETURN_RESULT(QV4::Encode(r->d()->context->state.shadowOffsetX)); } void QQuickJSContext2D::method_set_shadowOffsetX(const QV4::BuiltinFunction *, QV4::Scope &scope, QV4::CallData *callData) @@ -2016,7 +2016,7 @@ void QQuickJSContext2D::method_get_shadowOffsetY(const QV4::BuiltinFunction *, Q QV4::Scoped r(scope, callData->thisObject); CHECK_CONTEXT(r) - RETURN_RESULT(r->d()->context->state.shadowOffsetY); + RETURN_RESULT(QV4::Encode(r->d()->context->state.shadowOffsetY)); } void QQuickJSContext2D::method_set_shadowOffsetY(const QV4::BuiltinFunction *, QV4::Scope &scope, QV4::CallData *callData) @@ -3043,7 +3043,7 @@ void QQuickJSContext2DPixelData::proto_get_length(const QV4::BuiltinFunction *, if (!r || r->d()->image->isNull()) RETURN_UNDEFINED(); - RETURN_RESULT(r->d()->image->width() * r->d()->image->height() * 4); + RETURN_RESULT(QV4::Encode(r->d()->image->width() * r->d()->image->height() * 4)); } QV4::ReturnedValue QQuickJSContext2DPixelData::getIndexed(const QV4::Managed *m, uint index, bool *hasProperty) -- cgit v1.2.3