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256 lines
7.4 KiB
256 lines
7.4 KiB
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/*
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Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef KP_VIEW_SCROLLABLE_CONTAINER_H
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#define KP_VIEW_SCROLLABLE_CONTAINER_H
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#include <qpoint.h>
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#include <qscrollview.h>
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#include <qsize.h>
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class QCursor;
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class QRect;
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class QTimer;
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class kpGrip;
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class kpView;
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class kpMainWindow;
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// TODO: refactor by sharing iface's with kpTool
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class kpGrip : public QWidget
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{
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Q_OBJECT
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public:
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enum GripType
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{
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Right = 1, Bottom = 2,
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BottomRight = Right | Bottom
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};
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kpGrip (GripType type,
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QWidget *parent, const char *name = 0);
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virtual ~kpGrip ();
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GripType type () const;
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static const QCursor &cursorForType (GripType type);
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QRect hotRect (bool toGlobal = false) const;
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bool isDrawing () const;
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signals:
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void beganDraw ();
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void continuedDraw (int viewDX, int viewDY, bool dueToDragScroll);
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void cancelledDraw ();
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void endedDraw (int viewDX, int viewDY);
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void statusMessageChanged (const QString &string);
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void releasedAllButtons ();
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public:
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QString haventBegunDrawUserMessage () const;
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QString userMessage () const;
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void setUserMessage (const QString &message);
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protected:
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void updatePixmap ();
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void cancel ();
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protected:
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virtual void keyReleaseEvent (QKeyEvent *e);
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virtual void mousePressEvent (QMouseEvent *e);
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public:
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QPoint viewDeltaPoint () const;
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void mouseMovedTo (const QPoint &point, bool dueToDragScroll);
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protected:
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virtual void mouseMoveEvent (QMouseEvent *e);
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virtual void mouseReleaseEvent (QMouseEvent *e);
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virtual void resizeEvent (QResizeEvent *e);
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virtual void enterEvent (QEvent *e);
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virtual void leaveEvent (QEvent *e);
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virtual void paintEvent (QPaintEvent *e);
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protected:
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GripType m_type;
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QPoint m_startPoint, m_currentPoint;
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QString m_userMessage;
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bool m_shouldReleaseMouseButtons;
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};
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class kpViewScrollableContainer : public QScrollView
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{
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Q_OBJECT
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public:
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kpViewScrollableContainer (kpMainWindow *parent, const char *name = 0);
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virtual ~kpViewScrollableContainer ();
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// Same as contentsX() and contentsY() except that after
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// contentsMovingSoon() is emitted and before the scrollview actually
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// scrolls, they return the would be values of contentsX() and
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// contentsY() after scrolling.
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int contentsXSoon ();
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int contentsYSoon ();
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signals:
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// connect to this instead of contentsMoving(int,int) so that
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// contentsXSoon() and contentsYSoon() work
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void contentsMovingSoon (int contentsX, int contentsY);
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void beganDocResize ();
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void continuedDocResize (const QSize &size);
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void cancelledDocResize ();
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void endedDocResize (const QSize &size);
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// (string.isEmpty() if kpViewScrollableContainer has nothing to say)
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void statusMessageChanged (const QString &string);
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void resized ();
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public:
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QSize newDocSize () const;
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bool haveMovedFromOriginalDocSize () const;
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QString statusMessage () const;
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void clearStatusMessage ();
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protected:
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void connectGripSignals (kpGrip *grip);
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QSize newDocSize (int viewDX, int viewDY) const;
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void calculateDocResizingGrip ();
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kpGrip *docResizingGrip () const;
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int bottomResizeLineWidth () const;
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int rightResizeLineWidth () const;
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QRect bottomResizeLineRect () const;
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QRect rightResizeLineRect () const;
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QRect bottomRightResizeLineRect () const;
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QPoint mapViewToViewport (const QPoint &viewPoint);
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QRect mapViewToViewport (const QRect &viewRect);
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QRect mapViewportToGlobal (const QRect &viewportRect);
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QRect mapViewToGlobal (const QRect &viewRect);
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void repaintWidgetAtResizeLineViewRect (QWidget *widget,
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const QRect &resizeLineViewRect);
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void repaintWidgetAtResizeLines (QWidget *widget);
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void eraseResizeLines ();
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void drawResizeLines ();
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void updateResizeLines (int viewX, int viewY,
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int viewDX, int viewDY);
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protected slots:
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void slotGripBeganDraw ();
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void slotGripContinuedDraw (int viewDX, int viewDY, bool dueToScrollView);
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void slotGripCancelledDraw ();
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void slotGripEndedDraw (int viewDX, int viewDY);
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void slotGripStatusMessageChanged (const QString &string);
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public slots:
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void recalculateStatusMessage ();
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protected slots:
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void slotContentsMoving (int x, int y);
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void slotContentsMoved ();
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protected:
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void disconnectViewSignals ();
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void connectViewSignals ();
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public:
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// Calls setView(<widget>) after adding <widget> if it's a kpView.
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virtual void addChild (QWidget *widget, int x = 0, int y = 0);
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kpView *view () const;
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void setView (kpView *view);
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public slots:
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void updateGrips ();
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protected slots:
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void slotViewDestroyed ();
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public slots:
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// TODO: Why the QPoint's?
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// Why the need for view's zoomLevel? We have the view() anyway.
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bool beginDragScroll (const QPoint &, const QPoint &,
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int zoomLevel,
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bool *didSomething);
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bool beginDragScroll (const QPoint &, const QPoint &,
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int zoomLevel);
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bool endDragScroll ();
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protected slots:
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bool slotDragScroll (bool *didSomething);
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bool slotDragScroll ();
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protected:
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QRect noDragScrollRect () const;
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virtual void contentsDragMoveEvent (QDragMoveEvent *e);
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virtual void contentsMouseMoveEvent (QMouseEvent *e);
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virtual void contentsWheelEvent (QWheelEvent *e);
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virtual void mouseMoveEvent (QMouseEvent *e);
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virtual bool eventFilter (QObject *watchedObject, QEvent *e);
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virtual void viewportPaintEvent (QPaintEvent *e);
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virtual void paintEvent (QPaintEvent *e);
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virtual void resizeEvent (QResizeEvent *e);
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protected:
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kpMainWindow *m_mainWindow;
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int m_contentsXSoon, m_contentsYSoon;
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kpView *m_view;
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kpGrip *m_bottomGrip, *m_rightGrip, *m_bottomRightGrip;
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kpGrip *m_docResizingGrip;
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QTimer *m_dragScrollTimer;
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int m_zoomLevel;
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bool m_scrollTimerRunOnce;
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int m_resizeRoundedLastViewX, m_resizeRoundedLastViewY;
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int m_resizeRoundedLastViewDX, m_resizeRoundedLastViewDY;
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bool m_haveMovedFromOriginalDocSize;
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QString m_gripStatusMessage;
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};
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#endif // KP_VIEW_SCROLLABLE_CONTAINER_H
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