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iOS: fix crash when focusWindow changes while keyboard is open

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It turns out we cannot rely on QGuiApplication::focusWindow() to
be non-zero at all times (e.g when pop-ups are closing etc).
So instead use m_focusView.qwindow which points to a
valid QWindow. This window is the same as QGuiApplication::focusWindow
most of the time, except when a focus window closes.
For those cases we get a new call to scrollRootView immediately
after with m_focusView updated to reflect the new focusWindow.

Task-number: QTBUG-35339

Change-Id: Icb3a8d3140af1f1904495a9289c8c26ab79e70f6
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
This commit is contained in:
Richard Moe Gustavsen 2013-12-02 22:32:13 +01:00 committed by The Qt Project
parent 32f71db1bd
commit bd9cf0b7b9
1 changed files with 1 additions and 1 deletions
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2
src/plugins/platforms/ios/qiosinputcontext.mm
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@ -270,7 +270,7 @@ void QIOSInputContext::scrollRootView()
&& m_keyboardListener->m_keyboardVisibleAndDocked
&& m_focusView.window == view.window) {
QRectF cursorRect = qGuiApp->inputMethod()->cursorRectangle();
cursorRect.translate(qGuiApp->focusWindow()->geometry().topLeft());
cursorRect.translate(m_focusView.qwindow->geometry().topLeft());
qreal keyboardY = m_keyboardListener->m_keyboardEndRect.y();
int statusBarY = qGuiApp->primaryScreen()->availableGeometry().y();
const int margin = 20;