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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) void CustomDragAndDropIcon::mouseMoveEvent(QMouseEvent *event)
{ {
QPoint globalPos = event->globalPos(); 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) { 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); 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); move(pos);
else else
move(-1000, -1000); //no hiding because of mouse grabbing move(-1000, -1000); // no hiding because of mouse grabbing
resize(m_size); resize(m_size);
show(); show();
update(); update();
} }
else { 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: QWidget* target = QApplication::widgetAt(globalPos - QPoint(2,2)); //-(2, 2) because:
// otherwise we just get this widget // otherwise we just get this widget
@@ -117,18 +117,18 @@ void CustomDragAndDropIcon::mouseMoveEvent(QMouseEvent *event)
// event was accepted // event was accepted
bool wasAccepted = CustomDragAndDrop::isAccepted(); bool wasAccepted = CustomDragAndDrop::isAccepted();
CustomDragAndDrop::enter(target, globalPos); // create and handle the create enter event CustomDragAndDrop::enter(target, globalPos); // create and handle the create enter event
releaseMouse(); //to set the cursor we have to disable the mouse grabber releaseMouse(); // to set the cursor we have to disable the mouse grabber
if (CustomDragAndDrop::isAccepted()) { //setting the right cursor and trigger animation if (CustomDragAndDrop::isAccepted()) { // setting the right cursor and trigger animation
setCursor(Qt::CrossCursor); setCursor(Qt::CrossCursor);
if (!wasAccepted) if (!wasAccepted)
enter(); //trigger animation if enter event was accepted enter(); // trigger animation if enter event was accepted
} else { } else {
setCursor(Qt::ForbiddenCursor); setCursor(Qt::ForbiddenCursor);
if (wasAccepted) if (wasAccepted)
leave(); // trigger animation if we leave a widget that accepted leave(); // trigger animation if we leave a widget that accepted
// the drag enter event // 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(); grabMouseSafely();
} else { } else {
if (CustomDragAndDrop::isAccepted()) // create DragMoveEvents if the current widget if (CustomDragAndDrop::isAccepted()) // create DragMoveEvents if the current widget
@@ -183,35 +183,35 @@ void CustomDragAndDropIcon::leave()
void CustomDragAndDropIcon::animateDrag(int frame) void CustomDragAndDropIcon::animateDrag(int frame)
{ {
//interpolation of m_size and alpha values // interpolation of m_size and alpha values
if (CustomDragAndDrop::isAccepted()) { if (CustomDragAndDrop::isAccepted()) {
//small -> big // small -> big
m_iconAlpha = 1.0 - qreal(frame) / 10.0; m_iconAlpha = 1.0 - qreal(frame) / 10.0;
m_previewAlpha = 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 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); int height = qreal(m_preview.height()) * (qreal(frame) / 10.0) + qreal(m_icon.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height); m_size = QSize(width, height);
} else { } else {
//big -> small // big -> small
m_previewAlpha = 1.0 - qreal(frame) / 10.0; m_previewAlpha = 1.0 - qreal(frame) / 10.0;
m_iconAlpha = 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 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); int height = qreal(m_icon.height()) * (qreal(frame) / 10.0) + qreal(m_preview.height()) * (1 - qreal(frame) / 10.0);
m_size = QSize(width, height); m_size = QSize(width, height);
} }
QPoint p = pos(); QPoint p = pos();
resize(m_size); resize(m_size);
move(p); move(p);
update(); //redrawing needed update(); // redrawing needed
} }
class CustomDragAndDropGuard { //This guard destroys the singleton in its destructor class CustomDragAndDropGuard { // This guard destroys the singleton in its destructor
public: //This should avoid that a memory leak is reported public: // This should avoid that a memory leak is reported
~CustomDragAndDropGuard() { ~CustomDragAndDropGuard() {
if (CustomDragAndDrop::m_instance != 0) if (CustomDragAndDrop::m_instance)
delete CustomDragAndDrop::m_instance; delete CustomDragAndDrop::m_instance;
} }
}; };
@@ -228,7 +228,7 @@ CustomDragAndDrop::CustomDragAndDrop() : m_customDragActive(0), m_mimeData(0), m
CustomDragAndDrop* CustomDragAndDrop::instance() 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) if (m_instance == 0)
m_instance = new CustomDragAndDrop(); m_instance = new CustomDragAndDrop();
return m_instance; return m_instance;
@@ -268,9 +268,9 @@ void CustomDragAndDrop::enter(QWidget *target, QPoint globalPos)
{ {
if (target) { if (target) {
QPoint pos = target->mapFromGlobal(globalPos); QPoint pos = target->mapFromGlobal(globalPos);
QDragEnterEvent event(pos, Qt::MoveAction, instance()->m_mimeData ,Qt::RightButton, Qt::NoModifier); QDragEnterEvent event(pos, Qt::MoveAction, instance()->m_mimeData ,Qt::RightButton, Qt::NoModifier);
QApplication::sendEvent(target, &event); QApplication::sendEvent(target, &event);
instance()-> m_accepted = event.isAccepted(); //if the event is accepted we enter the "accepted" state instance()-> m_accepted = event.isAccepted(); // if the event is accepted we enter the "accepted" state
} else { } else {
instance()-> m_accepted = false; instance()-> m_accepted = false;
} }
@@ -316,6 +316,5 @@ bool CustomDragAndDrop::isAnimated()
return false; return false;
} }
} //namespace QmlDesignerItemLibraryDragAndDrop } // namespace QmlDesignerItemLibraryDragAndDrop
} //namespave QmlDesigner } // namespave QmlDesigner