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safer sizehint propagation

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This commit is contained in:
Marco Martin 2014-01-31 16:56:16 +01:00
parent 9e65dbc789
commit 856e16e803
1 changed files with 28 additions and 11 deletions
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39
src/scriptengines/qml/plasmoid/appletloader.cpp
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@ -90,7 +90,6 @@ void AppletLoader::init()
Q_ASSERT(m_appletScriptEngine);
//Initialize the main QML file
QQmlEngine *engine = m_qmlObject->engine();
@ -401,7 +400,19 @@ void AppletLoader::connectLayoutAttached(QObject *item)
//HACK: check the Layout properties we wrote
QQmlProperty p(this, "Layout.minimumWidth", QtQml::qmlContext(m_qmlObject->rootObject()));
QObject *ownLayout = p.object();
QObject *ownLayout = 0;
foreach (QObject *child, children()) {
//find for the needed property of Layout: minimum/maximum/preferred sizes and fillWidth/fillHeight
if (child->property("minimumWidth").isValid() && child->property("minimumHeight").isValid() &&
child->property("preferredWidth").isValid() && child->property("preferredHeight").isValid() &&
child->property("maximumWidth").isValid() && child->property("maximumHeight").isValid() &&
child->property("fillWidth").isValid() && child->property("fillHeight").isValid()
) {
ownLayout = child;
}
}
//this should never happen, since we ask to create it if doesn't exists
if (!ownLayout) {
@ -409,12 +420,13 @@ void AppletLoader::connectLayoutAttached(QObject *item)
}
//if the representation didn't change, don't do anything
if (m_representationLayout.data() == layout ||
m_ownLayout.data() == ownLayout) {
if (m_representationLayout.data() == layout) {
return;
}
disconnect(layout, 0, this, 0);
if (m_representationLayout) {
disconnect(m_representationLayout.data(), 0, this, 0);
}
//Here we can't use the new connect syntax because we can't link against QtQuick layouts
connect(layout, SIGNAL(minimumWidthChanged()),
@ -439,17 +451,22 @@ void AppletLoader::connectLayoutAttached(QObject *item)
m_representationLayout = layout;
m_ownLayout = ownLayout;
propagateSizeHint("minimumWidth");
propagateSizeHint("minimumHeight");
propagateSizeHint("preferredWidth");
propagateSizeHint("preferredHeight");
propagateSizeHint("maximumWidth");
propagateSizeHint("maximumHeight");
propagateSizeHint("fillWidth");
propagateSizeHint("fillHeight");
}
void AppletLoader::propagateSizeHint(const QByteArray &layoutProperty)
{
if (!m_currentRepresentationItem) {
return;
if (m_ownLayout && m_representationLayout) {
m_ownLayout.data()->setProperty(layoutProperty, m_representationLayout.data()->property(layoutProperty));
}
QQmlExpression *expr = new QQmlExpression(QtQml::qmlContext(m_currentRepresentationItem.data()), m_currentRepresentationItem.data(), "Layout."+layoutProperty);
QQmlProperty prop(this, "Layout."+layoutProperty, QtQml::qmlContext(m_currentRepresentationItem.data()));
prop.write(expr->evaluate());
}
void AppletLoader::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)