--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/designer/src/lib/shared/connectionedit_p.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,324 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// 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 };
+ 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