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7715705
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2011-10-10T16:15:56.383
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2013-09-17T18:43:22.340
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2013-09-17T18:43:22.340
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Body
At this point in time, you will probably need to use C++, especially if you want to accept drops from outside the QML application (e.g. the user drags a file from a file manager to your app). Here's an example component class to implement a DropArea item: DropArea.h: <pre><code>#ifndef DropArea_H #define DropArea_H #include <QDeclarativeItem> /** An oversimplified prototype Item which accepts any drop that includes data with mime type of text/plain, and just emits the text. */ class DropArea : public QDeclarativeItem { Q_OBJECT Q_PROPERTY(bool acceptingDrops READ isAcceptingDrops WRITE setAcceptingDrops NOTIFY acceptingDropsChanged) public: DropArea(QDeclarativeItem *parent=0); bool isAcceptingDrops() const { return m_accepting; } void setAcceptingDrops(bool accepting); signals: void textDrop(QString text); void acceptingDropsChanged(); protected: void dragEnterEvent(QGraphicsSceneDragDropEvent *event); void dragLeaveEvent(QGraphicsSceneDragDropEvent *event); void dropEvent(QGraphicsSceneDragDropEvent *event); private: bool m_accepting; }; #endif </code></pre> DropArea.cpp: <pre><code>#include <QGraphicsSceneDragDropEvent> #include <QMimeData> #include "DropArea.h" DropArea::DropArea(QDeclarativeItem *parent) : QDeclarativeItem(parent), m_accepting(true) { setAcceptDrops(m_accepting); } void DropArea::dragEnterEvent(QGraphicsSceneDragDropEvent *event) { event->acceptProposedAction(); setCursor(Qt::DragMoveCursor); } void DropArea::dragLeaveEvent(QGraphicsSceneDragDropEvent *event) { unsetCursor(); } void DropArea::dropEvent(QGraphicsSceneDragDropEvent *event) { emit textDrop(event->mimeData()->text()); unsetCursor(); } void DropArea::setAcceptingDrops(bool accepting) { if (accepting == m_accepting) return; m_accepting = accepting; setAcceptDrops(m_accepting); emit acceptingDropsChanged(); } </code></pre> your QML: <pre><code>DropArea { onTextDrop: ... } </code></pre> And you can implement a DragSourceArea similarly.
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