| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the Qt Designer of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of Qt Designer. This header |
| // file may change from version to version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| |
| #ifndef CONNECTIONEDIT_H |
| #define CONNECTIONEDIT_H |
| |
| #include "shared_global_p.h" |
| |
| #include <QtCore/QMultiMap> |
| #include <QtCore/QList> |
| #include <QtCore/QPointer> |
| |
| #include <QtGui/QWidget> |
| #include <QtGui/QPixmap> |
| #include <QtGui/QPolygonF> |
| |
| #include <QtGui/QUndoCommand> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QDesignerFormWindowInterface; |
| class QUndoStack; |
| class QMenu; |
| |
| namespace qdesigner_internal { |
| |
| class Connection; |
| class ConnectionEdit; |
| |
| class QDESIGNER_SHARED_EXPORT CETypes |
| { |
| public: |
| typedef QList<Connection*> ConnectionList; |
| typedef QMap<Connection*, Connection*> ConnectionSet; |
| typedef QMap<QWidget*, QWidget*> WidgetSet; |
| |
| class EndPoint { |
| public: |
| enum Type { Source, Target }; |
| explicit EndPoint(Connection *_con = 0, Type _type = Source) : con(_con), type(_type) {} |
| bool isNull() const { return con == 0; } |
| bool operator == (const EndPoint &other) const { return con == other.con && type == other.type; } |
| bool operator != (const EndPoint &other) const { return !operator == (other); } |
| Connection *con; |
| Type type; |
| }; |
| enum LineDir { UpDir = 0, DownDir, RightDir, LeftDir }; |
| }; |
| |
| class QDESIGNER_SHARED_EXPORT Connection : public CETypes |
| { |
| public: |
| explicit Connection(ConnectionEdit *edit); |
| explicit Connection(ConnectionEdit *edit, QObject *source, QObject *target); |
| virtual ~Connection() {} |
| |
| QObject *object(EndPoint::Type type) const |
| { |
| return (type == EndPoint::Source ? m_source : m_target); |
| } |
| |
| QWidget *widget(EndPoint::Type type) const |
| { |
| return qobject_cast<QWidget*>(object(type)); |
| } |
| |
| QPoint endPointPos(EndPoint::Type type) const; |
| QRect endPointRect(EndPoint::Type) const; |
| void setEndPoint(EndPoint::Type type, QObject *w, const QPoint &pos) |
| { type == EndPoint::Source ? setSource(w, pos) : setTarget(w, pos); } |
| |
| bool isVisible() const; |
| virtual void updateVisibility(); |
| void setVisible(bool b); |
| |
| virtual QRegion region() const; |
| bool contains(const QPoint &pos) const; |
| virtual void paint(QPainter *p) const; |
| |
| void update(bool update_widgets = true) const; |
| void checkWidgets(); |
| |
| QString label(EndPoint::Type type) const |
| { return type == EndPoint::Source ? m_source_label : m_target_label; } |
| void setLabel(EndPoint::Type type, const QString &text); |
| QRect labelRect(EndPoint::Type type) const; |
| QPixmap labelPixmap(EndPoint::Type type) const |
| { return type == EndPoint::Source ? m_source_label_pm : m_target_label_pm; } |
| |
| ConnectionEdit *edit() const { return m_edit; } |
| |
| virtual void inserted() {} |
| virtual void removed() {} |
| |
| private: |
| QPoint m_source_pos, m_target_pos; |
| QObject *m_source, *m_target; |
| QList<QPoint> m_knee_list; |
| QPolygonF m_arrow_head; |
| ConnectionEdit *m_edit; |
| QString m_source_label, m_target_label; |
| QPixmap m_source_label_pm, m_target_label_pm; |
| QRect m_source_rect, m_target_rect; |
| bool m_visible; |
| |
| void setSource(QObject *source, const QPoint &pos); |
| void setTarget(QObject *target, const QPoint &pos); |
| void updateKneeList(); |
| void trimLine(); |
| void updatePixmap(EndPoint::Type type); |
| LineDir labelDir(EndPoint::Type type) const; |
| bool ground() const; |
| QRect groundRect() const; |
| }; |
| |
| class QDESIGNER_SHARED_EXPORT ConnectionEdit : public QWidget, public CETypes |
| { |
| Q_OBJECT |
| public: |
| ConnectionEdit(QWidget *parent, QDesignerFormWindowInterface *form); |
| virtual ~ConnectionEdit(); |
| |
| inline const QPointer<QWidget> &background() const { return m_bg_widget; } |
| |
| void setSelected(Connection *con, bool sel); |
| bool selected(const Connection *con) const; |
| |
| int connectionCount() const { return m_con_list.size(); } |
| Connection *connection(int i) const { return m_con_list.at(i); } |
| int indexOfConnection(Connection *con) const { return m_con_list.indexOf(con); } |
| |
| virtual void setSource(Connection *con, const QString &obj_name); |
| virtual void setTarget(Connection *con, const QString &obj_name); |
| |
| QUndoStack *undoStack() const { return m_undo_stack; } |
| |
| void clear(); |
| |
| void showEvent(QShowEvent * /*e*/) |
| { |
| updateBackground(); |
| } |
| |
| signals: |
| void aboutToAddConnection(int idx); |
| void connectionAdded(Connection *con); |
| void aboutToRemoveConnection(Connection *con); |
| void connectionRemoved(int idx); |
| void connectionSelected(Connection *con); |
| void widgetActivated(QWidget *wgt); |
| void connectionChanged(Connection *con); |
| |
| public slots: |
| void selectNone(); |
| void selectAll(); |
| virtual void deleteSelected(); |
| virtual void setBackground(QWidget *background); |
| virtual void updateBackground(); |
| virtual void widgetRemoved(QWidget *w); |
| virtual void objectRemoved(QObject *o); |
| |
| void updateLines(); |
| void enableUpdateBackground(bool enable); |
| |
| protected: |
| virtual void paintEvent(QPaintEvent *e); |
| virtual void mouseMoveEvent(QMouseEvent *e); |
| virtual void mousePressEvent(QMouseEvent *e); |
| virtual void mouseReleaseEvent(QMouseEvent *e); |
| virtual void keyPressEvent(QKeyEvent *e); |
| virtual void mouseDoubleClickEvent(QMouseEvent *e); |
| virtual void resizeEvent(QResizeEvent *e); |
| virtual void contextMenuEvent(QContextMenuEvent * event); |
| |
| virtual Connection *createConnection(QWidget *source, QWidget *target); |
| virtual void modifyConnection(Connection *con); |
| |
| virtual QWidget *widgetAt(const QPoint &pos) const; |
| virtual void createContextMenu(QMenu &menu); |
| void addConnection(Connection *con); |
| QRect widgetRect(QWidget *w) const; |
| |
| enum State { Editing, Connecting, Dragging }; |
| State state() const; |
| |
| virtual void endConnection(QWidget *target, const QPoint &pos); |
| |
| const ConnectionList &connectionList() const { return m_con_list; } |
| const ConnectionSet &selection() const { return m_sel_con_set; } |
| Connection *takeConnection(Connection *con); |
| Connection *newlyAddedConnection() { return m_tmp_con; } |
| void clearNewlyAddedConnection(); |
| |
| void findObjectsUnderMouse(const QPoint &pos); |
| |
| private: |
| void startConnection(QWidget *source, const QPoint &pos); |
| void continueConnection(QWidget *target, const QPoint &pos); |
| void abortConnection(); |
| |
| void startDrag(const EndPoint &end_point, const QPoint &pos); |
| void continueDrag(const QPoint &pos); |
| void endDrag(const QPoint &pos); |
| void adjustHotSopt(const EndPoint &end_point, const QPoint &pos); |
| Connection *connectionAt(const QPoint &pos) const; |
| EndPoint endPointAt(const QPoint &pos) const; |
| void paintConnection(QPainter *p, Connection *con, |
| WidgetSet *heavy_highlight_set, |
| WidgetSet *light_highlight_set) const; |
| void paintLabel(QPainter *p, EndPoint::Type type, Connection *con); |
| |
| |
| QPointer<QWidget> m_bg_widget; |
| QUndoStack *m_undo_stack; |
| bool m_enable_update_background; |
| |
| Connection *m_tmp_con; // the connection we are currently editing |
| ConnectionList m_con_list; |
| bool m_start_connection_on_drag; |
| EndPoint m_end_point_under_mouse; |
| QPointer<QWidget> m_widget_under_mouse; |
| |
| EndPoint m_drag_end_point; |
| QPoint m_old_source_pos, m_old_target_pos; |
| ConnectionSet m_sel_con_set; |
| const QColor m_inactive_color; |
| const QColor m_active_color; |
| |
| private: |
| friend class Connection; |
| friend class AddConnectionCommand; |
| friend class DeleteConnectionsCommand; |
| friend class SetEndPointCommand; |
| }; |
| |
| class QDESIGNER_SHARED_EXPORT CECommand : public QUndoCommand, public CETypes |
| { |
| public: |
| explicit CECommand(ConnectionEdit *edit) |
| : m_edit(edit) {} |
| |
| virtual bool mergeWith(const QUndoCommand *) { return false; } |
| |
| ConnectionEdit *edit() const { return m_edit; } |
| |
| private: |
| ConnectionEdit *m_edit; |
| }; |
| |
| class QDESIGNER_SHARED_EXPORT AddConnectionCommand : public CECommand |
| { |
| public: |
| AddConnectionCommand(ConnectionEdit *edit, Connection *con); |
| virtual void redo(); |
| virtual void undo(); |
| private: |
| Connection *m_con; |
| }; |
| |
| class QDESIGNER_SHARED_EXPORT DeleteConnectionsCommand : public CECommand |
| { |
| public: |
| DeleteConnectionsCommand(ConnectionEdit *edit, const ConnectionList &con_list); |
| virtual void redo(); |
| virtual void undo(); |
| private: |
| ConnectionList m_con_list; |
| }; |
| |
| } // namespace qdesigner_internal |
| |
| QT_END_NAMESPACE |
| |
| #endif // CONNECTIONEDIT_H |