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This commit is contained in:
Thorbjørn Lindeijer
2011-04-26 11:46:34 +02:00
parent 68e7c57a99
commit 701742168a
1 changed files with 35 additions and 36 deletions
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71
src/plugins/qmldesigner/components/itemlibrary/customdraganddrop.cpp
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@@ -94,20 +94,20 @@ void CustomDragAndDropIcon::mouseReleaseEvent(QMouseEvent *event)
void CustomDragAndDropIcon::mouseMoveEvent(QMouseEvent *event)
{
QPoint globalPos = event->globalPos();
QWidget * widget = QApplication::topLevelAt(globalPos); //grap the "current" top level widget
QWidget * widget = QApplication::topLevelAt(globalPos); // grap the "current" top level widget
if (widget) {
setParent(widget); //set the current top level widget as parent
setParent(widget); // set the current top level widget as parent
QPoint pos = parentWidget()->mapFromGlobal(globalPos);
if ((pos.y() > 30 && CustomDragAndDrop::isVisible())) //do not allow dragging over the menubar
if ((pos.y() > 30 && CustomDragAndDrop::isVisible())) // do not allow dragging over the menubar
move(pos);
else
move(-1000, -1000); //no hiding because of mouse grabbing
move(-1000, -1000); // no hiding because of mouse grabbing
resize(m_size);
show();
update();
}
else {
move(-1000, -1000); //if no top level widget is found we are out of the main window
move(-1000, -1000); // if no top level widget is found we are out of the main window
}
QWidget* target = QApplication::widgetAt(globalPos - QPoint(2,2)); //-(2, 2) because:
// otherwise we just get this widget
@@ -117,18 +117,18 @@ void CustomDragAndDropIcon::mouseMoveEvent(QMouseEvent *event)
// event was accepted
bool wasAccepted = CustomDragAndDrop::isAccepted();
CustomDragAndDrop::enter(target, globalPos); // create and handle the create enter event
releaseMouse(); //to set the cursor we have to disable the mouse grabber
if (CustomDragAndDrop::isAccepted()) { //setting the right cursor and trigger animation
releaseMouse(); // to set the cursor we have to disable the mouse grabber
if (CustomDragAndDrop::isAccepted()) { // setting the right cursor and trigger animation
setCursor(Qt::CrossCursor);
if (!wasAccepted)
enter(); //trigger animation if enter event was accepted
enter(); // trigger animation if enter event was accepted
} else {
setCursor(Qt::ForbiddenCursor);
if (wasAccepted)
leave(); // trigger animation if we leave a widget that accepted
// the drag enter event
}
//enable the mouse grabber again - after the curser is set
// enable the mouse grabber again - after the curser is set
grabMouseSafely();
} else {
if (CustomDragAndDrop::isAccepted()) // create DragMoveEvents if the current widget
@@ -183,35 +183,35 @@ void CustomDragAndDropIcon::leave()
void CustomDragAndDropIcon::animateDrag(int frame)
{
//interpolation of m_size and alpha values
// interpolation of m_size and alpha values
if (CustomDragAndDrop::isAccepted()) {
//small -> big
m_iconAlpha = 1.0 - qreal(frame) / 10.0;
m_previewAlpha = qreal(frame) / 10.0;
int width = qreal(m_preview.width()) * (qreal(frame) / 10.0) + qreal(m_icon.width()) * (1.0 - qreal(frame) / 10.0);
int height = qreal(m_preview.height()) * (qreal(frame) / 10.0) + qreal(m_icon.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height);
// small -> big
m_iconAlpha = 1.0 - qreal(frame) / 10.0;
m_previewAlpha = qreal(frame) / 10.0;
int width = qreal(m_preview.width()) * (qreal(frame) / 10.0) + qreal(m_icon.width()) * (1.0 - qreal(frame) / 10.0);
int height = qreal(m_preview.height()) * (qreal(frame) / 10.0) + qreal(m_icon.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height);
} else {
//big -> small
m_previewAlpha = 1.0 - qreal(frame) / 10.0;
m_iconAlpha = qreal(frame) / 10.0;
int width = qreal(m_icon.width()) * (qreal(frame) / 10.0) + qreal(m_preview.width()) * (1.0 - qreal(frame) / 10.0);
int height = qreal(m_icon.height()) * (qreal(frame) / 10.0) + qreal(m_preview.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height);
// big -> small
m_previewAlpha = 1.0 - qreal(frame) / 10.0;
m_iconAlpha = qreal(frame) / 10.0;
int width = qreal(m_icon.width()) * (qreal(frame) / 10.0) + qreal(m_preview.width()) * (1.0 - qreal(frame) / 10.0);
int height = qreal(m_icon.height()) * (qreal(frame) / 10.0) + qreal(m_preview.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height);
}
QPoint p = pos();
resize(m_size);
move(p);
update(); //redrawing needed
update(); // redrawing needed
}
class CustomDragAndDropGuard { //This guard destroys the singleton in its destructor
public: //This should avoid that a memory leak is reported
~CustomDragAndDropGuard() {
if (CustomDragAndDrop::m_instance != 0)
delete CustomDragAndDrop::m_instance;
}
class CustomDragAndDropGuard { // This guard destroys the singleton in its destructor
public: // This should avoid that a memory leak is reported
~CustomDragAndDropGuard() {
if (CustomDragAndDrop::m_instance)
delete CustomDragAndDrop::m_instance;
}
};
@@ -228,7 +228,7 @@ CustomDragAndDrop::CustomDragAndDrop() : m_customDragActive(0), m_mimeData(0), m
CustomDragAndDrop* CustomDragAndDrop::instance()
{
static CustomDragAndDropGuard guard; //The destructor destroys the singleton. See above
static CustomDragAndDropGuard guard; // The destructor destroys the singleton. See above
if (m_instance == 0)
m_instance = new CustomDragAndDrop();
return m_instance;
@@ -268,9 +268,9 @@ void CustomDragAndDrop::enter(QWidget *target, QPoint globalPos)
{
if (target) {
QPoint pos = target->mapFromGlobal(globalPos);
QDragEnterEvent event(pos, Qt::MoveAction, instance()->m_mimeData ,Qt::RightButton, Qt::NoModifier);
QApplication::sendEvent(target, &event);
instance()-> m_accepted = event.isAccepted(); //if the event is accepted we enter the "accepted" state
QDragEnterEvent event(pos, Qt::MoveAction, instance()->m_mimeData ,Qt::RightButton, Qt::NoModifier);
QApplication::sendEvent(target, &event);
instance()-> m_accepted = event.isAccepted(); // if the event is accepted we enter the "accepted" state
} else {
instance()-> m_accepted = false;
}
@@ -316,6 +316,5 @@ bool CustomDragAndDrop::isAnimated()
return false;
}
} //namespace QmlDesignerItemLibraryDragAndDrop
} //namespave QmlDesigner
} // namespace QmlDesignerItemLibraryDragAndDrop
} // namespave QmlDesigner