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Diffstat (limited to 'src/designer/src/lib/shared/connectionedit_p.h')
| -rw-r--r-- | src/designer/src/lib/shared/connectionedit_p.h | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/src/designer/src/lib/shared/connectionedit_p.h b/src/designer/src/lib/shared/connectionedit_p.h new file mode 100644 index 000000000..553fbe188 --- /dev/null +++ b/src/designer/src/lib/shared/connectionedit_p.h @@ -0,0 +1,324 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 }; + 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 |