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| |
| #include "qplatformdrag.h" |
| |
| #include <QtGui/private/qdnd_p.h> |
| #include <QtGui/QKeyEvent> |
| #include <QtGui/QGuiApplication> |
| #include <QtCore/QEventLoop> |
| |
| QT_BEGIN_NAMESPACE |
| |
| #ifdef QDND_DEBUG |
| # include <QtCore/QDebug> |
| #endif |
| |
| QPlatformDropQtResponse::QPlatformDropQtResponse(bool accepted, Qt::DropAction acceptedAction) |
| : m_accepted(accepted) |
| , m_accepted_action(acceptedAction) |
| { |
| } |
| |
| bool QPlatformDropQtResponse::isAccepted() const |
| { |
| return m_accepted; |
| } |
| |
| Qt::DropAction QPlatformDropQtResponse::acceptedAction() const |
| { |
| return m_accepted_action; |
| } |
| |
| QPlatformDragQtResponse::QPlatformDragQtResponse(bool accepted, Qt::DropAction acceptedAction, QRect answerRect) |
| : QPlatformDropQtResponse(accepted,acceptedAction) |
| , m_answer_rect(answerRect) |
| { |
| } |
| |
| QRect QPlatformDragQtResponse::answerRect() const |
| { |
| return m_answer_rect; |
| } |
| |
| class QPlatformDragPrivate { |
| public: |
| QPlatformDragPrivate() : cursor_drop_action(Qt::IgnoreAction) {} |
| |
| Qt::DropAction cursor_drop_action; |
| }; |
| |
| /*! |
| \class QPlatformDrag |
| \since 5.0 |
| \internal |
| \preliminary |
| \ingroup qpa |
| |
| \brief The QPlatformDrag class provides an abstraction for drag. |
| */ |
| QPlatformDrag::QPlatformDrag() : d_ptr(new QPlatformDragPrivate) |
| { |
| } |
| |
| QPlatformDrag::~QPlatformDrag() |
| { |
| delete d_ptr; |
| } |
| |
| QDrag *QPlatformDrag::currentDrag() const |
| { |
| return QDragManager::self()->object(); |
| } |
| |
| Qt::DropAction QPlatformDrag::defaultAction(Qt::DropActions possibleActions, |
| Qt::KeyboardModifiers modifiers) const |
| { |
| #ifdef QDND_DEBUG |
| qDebug() << "QDragManager::defaultAction(Qt::DropActions possibleActions)\nkeyboard modifiers : " << modifiers; |
| #endif |
| |
| Qt::DropAction default_action = Qt::IgnoreAction; |
| |
| if (currentDrag()) { |
| default_action = currentDrag()->defaultAction(); |
| } |
| |
| |
| if (default_action == Qt::IgnoreAction) { |
| //This means that the drag was initiated by QDrag::start and we need to |
| //preserve the old behavior |
| default_action = Qt::CopyAction; |
| } |
| |
| if (modifiers & Qt::ControlModifier && modifiers & Qt::ShiftModifier) |
| default_action = Qt::LinkAction; |
| else if (modifiers & Qt::ControlModifier) |
| default_action = Qt::CopyAction; |
| else if (modifiers & Qt::ShiftModifier) |
| default_action = Qt::MoveAction; |
| else if (modifiers & Qt::AltModifier) |
| default_action = Qt::LinkAction; |
| |
| #ifdef QDND_DEBUG |
| qDebug() << "possible actions : " << possibleActions; |
| #endif |
| |
| // Check if the action determined is allowed |
| if (!(possibleActions & default_action)) { |
| if (possibleActions & Qt::CopyAction) |
| default_action = Qt::CopyAction; |
| else if (possibleActions & Qt::MoveAction) |
| default_action = Qt::MoveAction; |
| else if (possibleActions & Qt::LinkAction) |
| default_action = Qt::LinkAction; |
| else |
| default_action = Qt::IgnoreAction; |
| } |
| |
| #ifdef QDND_DEBUG |
| qDebug() << "default action : " << default_action; |
| #endif |
| |
| return default_action; |
| } |
| |
| /*! |
| \brief Cancels the currently active drag (only for drags of |
| the current application initiated by QPlatformDrag::drag()). |
| |
| The default implementation does nothing. |
| |
| \since 5.7 |
| */ |
| |
| void QPlatformDrag::cancelDrag() |
| { |
| Q_UNIMPLEMENTED(); |
| } |
| |
| /*! |
| \brief Called to notify QDrag about changes of the current action. |
| */ |
| |
| void QPlatformDrag::updateAction(Qt::DropAction action) |
| { |
| Q_D(QPlatformDrag); |
| if (d->cursor_drop_action != action) { |
| d->cursor_drop_action = action; |
| emit currentDrag()->actionChanged(action); |
| } |
| } |
| |
| static const char *const default_pm[] = { |
| "13 9 3 1", |
| ". c None", |
| " c #000000", |
| "X c #FFFFFF", |
| "X X X X X X X", |
| " X X X X X X ", |
| "X ......... X", |
| " X.........X ", |
| "X ......... X", |
| " X.........X ", |
| "X ......... X", |
| " X X X X X X ", |
| "X X X X X X X", |
| }; |
| |
| Q_GLOBAL_STATIC_WITH_ARGS(QPixmap,qt_drag_default_pixmap,(default_pm)) |
| |
| QPixmap QPlatformDrag::defaultPixmap() |
| { |
| return *qt_drag_default_pixmap(); |
| } |
| |
| /*! |
| \since 5.4 |
| \brief Returns bool indicating whether QPlatformDrag takes ownership |
| and therefore responsibility of deleting the QDrag object passed in |
| from QPlatformDrag::drag. This can be useful on platforms where QDrag |
| object has to be kept around. |
| */ |
| bool QPlatformDrag::ownsDragObject() const |
| { |
| return false; |
| } |
| |
| QT_END_NAMESPACE |