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QmlProfiler: Try harder to obtain a canvas context

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The QML canvas is notoriously bad at keeping its context around. This
workaround gives us a valid context in many of these cases.

Change-Id: I6c23aa2b44c10a48cdb89c66a2861ab8d31bcfc8
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
This commit is contained in:
Ulf Hermann
2014-09-09 17:42:35 +02:00
parent f3bdba6c77
commit 82793e7339
3 changed files with 3 additions and 7 deletions
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3
src/plugins/qmlprofiler/qml/Overview.qml
View File

@@ -112,8 +112,7 @@ Canvas {
// ***** slots
onPaint: {
if (context === null)
return; // canvas isn't ready
var context = (canvas.context === null) ? getContext("2d") : canvas.context;
Plotter.qmlProfilerModelProxy = qmlProfilerModelProxy;

3
src/plugins/qmlprofiler/qml/TimeDisplay.qml
View File

@@ -48,8 +48,7 @@ Canvas {
}
onPaint: {
if (context === null)
return; // canvas isn't ready
var context = (timeDisplay.context === null) ? getContext("2d") : timeDisplay.context;
context.reset();
context.fillStyle = "white";

4
src/plugins/qmlprofiler/qml/TimeMarks.qml
View File

@@ -51,9 +51,7 @@ Canvas {
onYChanged: requestPaint()
onPaint: {
if (context === null)
return; // canvas isn't ready
var context = (timeMarks.context === null) ? getContext("2d") : timeMarks.context;
context.reset();
drawBackgroundBars( context, region );