File indexing completed on 2024-05-19 09:39:36

0001 /***************************************************************************
0002  *   Copyright (C) 2005 by David Saxton                                    *
0003  *   david@bluehaze.org                                                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  ***************************************************************************/
0010 
0011 #ifndef CIWIDGETMGR_H
0012 #define CIWIDGETMGR_H
0013 
0014 #include <QIcon>
0015 #include <QMap>
0016 #include <QString>
0017 
0018 #include "eventinfo.h"
0019 
0020 class Button;
0021 class CNItem;
0022 class Slider;
0023 class KtlQCanvas;
0024 class Widget;
0025 
0026 typedef QMap<QString, Widget *> WidgetMap;
0027 
0028 /**
0029 This class handles the widgets (those things associated with CNItems that use QWidgets.
0030 This class is pretty much to maintain a tidy interface: the functions could just as well be
0031 all shoved in CNItem, but that gets messy.
0032 @author David Saxton
0033 */
0034 class CIWidgetMgr
0035 {
0036 public:
0037     CIWidgetMgr(KtlQCanvas *canvas, CNItem *item);
0038     virtual ~CIWidgetMgr();
0039 
0040     /**
0041      * Set the top-left position from which mouse events are interpreted and the
0042      * widgets are drawn from.
0043      */
0044     void setWidgetsPos(const QPoint &pos);
0045     /**
0046      * Returns a pointer to the widget with the given id, or nullptr if no such
0047      * widgets are found.
0048      */
0049     Widget *widgetWithID(const QString &id) const;
0050     Button *button(const QString &id) const;
0051     Slider *slider(const QString &id) const;
0052     void setButtonState(const QString &id, int state);
0053     /**
0054      * Adds a slider with the given id and values to the position
0055      */
0056     Slider *addSlider(const QString &id, int minValue, int maxValue, int pageStep, int value, Qt::Orientation orientation, const QRect &pos);
0057     /**
0058      * Essentially the same as addDisplayText, but displays a button with
0059      * text on it. The virtual functions buttonPressed( const QString &id ) and
0060      * buttonReleased( const QString &id ) are called as appropriate with button id
0061      */
0062     Button *addButton(const QString &id, const QRect &pos, const QString &display, bool toggle = false);
0063     /**
0064      * Adds a button with a QIcon icon on it instead of text
0065      * @see void addButton( const QString &id, QRect pos, const QString &display )
0066      */
0067     Button *addButton(const QString &id, const QRect &pos, const QIcon &icon, bool toggle = false);
0068     /**
0069      * Removes the widget with the given id.
0070      */
0071     void removeWidget(const QString &id);
0072     /**
0073      * Sets whether or not to draw the widgets (drawing widgets mucks up SVG
0074      * export). This function just calls either hide() or show() in each widget.
0075      */
0076     void setDrawWidgets(bool draw);
0077 
0078     bool mousePressEvent(const EventInfo &info);
0079     bool mouseReleaseEvent(const EventInfo &info);
0080     bool mouseDoubleClickEvent(const EventInfo &info);
0081     bool mouseMoveEvent(const EventInfo &info);
0082     bool wheelEvent(const EventInfo &info);
0083     void enterEvent(QEvent *);
0084     void leaveEvent(QEvent *);
0085 
0086     virtual void buttonStateChanged(const QString & /*id*/, bool /*on*/) {};
0087     virtual void sliderValueChanged(const QString & /*id*/, int /*value*/) {};
0088 
0089     int mgrX() const
0090     {
0091         return m_pos.x();
0092     }
0093     int mgrY() const
0094     {
0095         return m_pos.y();
0096     }
0097     /**
0098      * Draw the widgets using the given painter. This function isn't actually
0099      * used to draw the widgets on the canvas, as they are QCanvasItems
0100      * themselves, but allows other classes (e.g. ItemLibrary) to draw them
0101      * using a special painter.
0102      */
0103     void drawWidgets(QPainter &p);
0104 
0105 protected:
0106     WidgetMap m_widgetMap;
0107     QPoint m_pos;
0108     KtlQCanvas *p_canvas;
0109     CNItem *p_cnItem;
0110 };
0111 
0112 #endif