File indexing completed on 2024-09-29 05:04:10

 /***************************************************************************
  *   Copyright (C) 2003-2005 by David Saxton                               *
  *   david@bluehaze.org                                                    *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  ***************************************************************************/
 
 #ifndef CANVASITEMPARTS_H
 #define CANVASITEMPARTS_H
 
 //#include <canvas.h> // 2018.10.16 - not needed
 #include "canvasitems.h"
 #include <QIcon>
 #include <QPointer>
 #include <QSlider>
 #include <QToolButton>
 
 class Cells;
 class CIWidgetMgr;
 class CNItem;
 class SliderWidget;
 class ToolButton;
 class QString;
 
 class GuiPart : /* public QObject, */ public KtlQCanvasRectangle
 {
     Q_OBJECT
 public:
     /**
      * Create a GuiPart. Control the position using setGuiPartSize, instead
      * of calling KtlQCanvasRectangle::setSize. This allows GuiPart to know
      * when its size has been changed
      */
     GuiPart(CNItem *parent, const QRect &r, KtlQCanvas *canvas);
     ~GuiPart() override;
 
     virtual QRect recommendedRect() const
     {
         return m_originalRect;
     }
     void setOriginalRect(const QRect &r)
     {
         m_originalRect = r;
     }
 
     virtual void updateConnectorPoints(bool add);
 
     /**
      * Set the angle that the GuiPart draws itself (if the GuiPart chooses
      * to use it by calling initPainter and deinitPainter from drawShape).
      * Note that this doesn't affect the rectangle position that the
      * GuiPart is in. The rotation is taken to be about the center of the
      * rectangle.
      */
     void setAngleDegrees(int angleDegrees);
     /**
      * Control the size. Call this instead of KtlQCanvasRectangle::setSize. In
      * turn, this function will notify subclasses via posChanged();
      */
     void setGuiPartSize(int width, int height);
     /**
      * Returns the rectangle to draw in to compensate for rotation of
      * the QPainter
      */
     QRect drawRect();
 
     int angleDegrees() const
     {
         return m_angleDegrees;
     }
     CNItem *parent() const
     {
         return p_parent;
     }
 
 protected:
     /**
      * Called when the size or angle changes
      */
     virtual void posChanged()
     {
         ;
     }
     /**
      * Rotate / etc the painter. You must call deinitPainter after
      * calling this function.
      */
     void initPainter(QPainter &p);
     /**
      * Complement function to initPainter - restores painter to normal
      * transform
      */
     void deinitPainter(QPainter &p);
     int m_angleDegrees;
     CNItem *p_parent;
     bool b_pointsAdded;
     QRect m_originalRect;
 
 private slots:
     void slotMoveBy(double dx, double dy);
 };
 
 /**
 @short Stores internal information about text associated with CNItem
 @author David Saxton
 */
 class Text : public GuiPart
 {
     Q_OBJECT
 public:
     Text(const QString &text, CNItem *parent, const QRect &r, KtlQCanvas *canvas, int flags = Qt::AlignHCenter | Qt::AlignVCenter);
     ~Text() override;
 
     /**
      * Set the text, returning true if the size of this Text on the canvas
      * has changed.
      */
     bool setText(const QString &text);
     QRect recommendedRect() const override;
     void drawShape(QPainter &p) override;
     /**
      * The text flags (see QPainter::drawText) - Qt::AlignmentFlags and
      * Qt::TextFlags OR'd together.
      */
     int flags() const
     {
         return m_flags;
     }
     /**
      * @see flags
      */
     void setFlags(int flags);
 
 protected:
     QString m_text;
     int m_flags;
 };
 typedef QMap<QString, QPointer<Text>> TextMap;
 
 /**
 @short Base class for embedding Qt Widgets into the canvas
 @author David Saxton
 */
 class Widget : public GuiPart
 {
 public:
     Widget(const QString &id, CNItem *parent, const QRect &r, KtlQCanvas *canvas);
     ~Widget() override;
 
     virtual QWidget *widget() const = 0;
     QString id() const
     {
         return m_id;
     }
 
     /**
      * Set the widget enabled/disabled
      */
     void setEnabled(bool enabled);
 
     virtual void enterEvent(QEvent *) {};
     virtual void leaveEvent(QEvent *) {};
 
     /**
      * Mouse was pressed. pos is given relative to CNItem position.
      */
     virtual void mousePressEvent(QMouseEvent *e)
     {
         Q_UNUSED(e);
     }
     /**
      * Mouse was released. pos is given relative to CNItem position.
      */
     virtual void mouseReleaseEvent(QMouseEvent *e)
     {
         Q_UNUSED(e);
     }
     /**
      * Mouse was double clicked. pos is given relative to CNItem position.
      */
     virtual void mouseDoubleClickEvent(QMouseEvent *e)
     {
         Q_UNUSED(e);
     }
     /**
      * Mouse was moved. pos is given relative to CNItem position.
      */
     virtual void mouseMoveEvent(QMouseEvent *e)
     {
         Q_UNUSED(e);
     }
     /**
      * Mouse was scrolled. pos is given relative to CNItem position.
      */
     virtual void wheelEvent(QWheelEvent *e)
     {
         Q_UNUSED(e);
     }
 
     void drawShape(QPainter &p) override;
 
 protected:
     void posChanged() override;
     QString m_id;
 };
 
 class ToolButton : public QToolButton
 {
 public:
     ToolButton(QWidget *parent);
 
     void mousePressEvent(QMouseEvent *e) override
     {
         QToolButton::mousePressEvent(e);
     }
     void mouseReleaseEvent(QMouseEvent *e) override
     {
         QToolButton::mouseReleaseEvent(e);
     }
     void mouseDoubleClickEvent(QMouseEvent *e) override
     {
         QToolButton::mouseDoubleClickEvent(e);
     }
     void mouseMoveEvent(QMouseEvent *e) override
     {
         QToolButton::mouseMoveEvent(e);
     }
     void wheelEvent(QWheelEvent *e) override
     {
         QToolButton::wheelEvent(e);
     }
     void enterEvent(QEvent *) override
     {
         QToolButton::enterEvent(nullptr);
     }
     void leaveEvent(QEvent *) override
     {
         QToolButton::leaveEvent(nullptr);
     }
 
     // Not overriding because it complains about it being wrong for some
     // reason, so just wrap the function.
     void initStyleOpt(QStyleOptionToolButton *option) const
     {
         QToolButton::initStyleOption(option);
     }
 
     void setAngleDegrees(int angleDegrees)
     {
         m_angleDegrees = angleDegrees;
     }
 
 protected:
     virtual void drawButtonLabel(QPainter *p);
 
     int m_angleDegrees;
     QFont m_font;
 };
 
 /**
 @short Stores internal information about button associated with CNItem
 @author David Saxton
 */
 class Button : public Widget
 {
     Q_OBJECT
 public:
     Button(const QString &id, CNItem *parent, bool isToggle, const QRect &r, KtlQCanvas *canvas);
     ~Button() override;
 
     void mousePressEvent(QMouseEvent *e) override;
     void mouseReleaseEvent(QMouseEvent *e) override;
     void enterEvent(QEvent *) override;
     void leaveEvent(QEvent *) override;
 
     /**
      * Set the text displayed inside the button
      */
     void setText(const QString &text);
     void setToggle(bool toggle);
     bool isToggle() const
     {
         return b_isToggle;
     }
     QWidget *widget() const override;
     bool state() const;
     void setIcon(const QIcon &);
     void setState(bool state);
     QRect recommendedRect() const override;
 
     void drawShape(QPainter &p) override;
 
 protected:
     void posChanged() override;
 
 private slots:
     void slotStateChanged();
 
 private:
     bool b_isToggle; // i.e. whether it should be depressed when the mouse is released
     ToolButton *m_button;
 };
 
 class SliderWidget : public QSlider
 {
 public:
     SliderWidget(QWidget *parent);
 
     void mousePressEvent(QMouseEvent *e) override
     {
         QSlider::mousePressEvent(e);
     }
     void mouseReleaseEvent(QMouseEvent *e) override
     {
         QSlider::mouseReleaseEvent(e);
     }
     void mouseDoubleClickEvent(QMouseEvent *e) override
     {
         QSlider::mouseDoubleClickEvent(e);
     }
     void mouseMoveEvent(QMouseEvent *e) override
     {
         QSlider::mouseMoveEvent(e);
     }
     void wheelEvent(QWheelEvent *e) override
     {
         QSlider::wheelEvent(e);
     }
     void enterEvent(QEvent *) override
     {
         QSlider::enterEvent(nullptr);
     }
     void leaveEvent(QEvent *) override
     {
         QSlider::leaveEvent(nullptr);
     }
 
     // Not overriding because it complains about it being wrong for some
     // reason, so just wrap the function.
     void initStyleOpt(QStyleOptionSlider *option) const
     {
         QSlider::initStyleOption(option);
     }
 };
 
 /**
 @short Stores internal information about a QSlider associated with CNItem
 @author David Saxton
 */
 class Slider : public Widget
 {
     Q_OBJECT
 public:
     Slider(const QString &id, CNItem *parent, const QRect &r, KtlQCanvas *canvas);
     ~Slider() override;
 
     void mousePressEvent(QMouseEvent *e) override;
     void mouseReleaseEvent(QMouseEvent *e) override;
     void mouseDoubleClickEvent(QMouseEvent *e) override;
     void mouseMoveEvent(QMouseEvent *e) override;
     void wheelEvent(QWheelEvent *e) override;
     void enterEvent(QEvent *) override;
     void leaveEvent(QEvent *) override;
 
     QWidget *widget() const override;
     int value() const;
     void setValue(int value);
     void setOrientation(Qt::Orientation o);
 
     void drawShape(QPainter &p) override;
 
 protected:
     void posChanged() override;
 
 private slots:
     void slotValueChanged(int value);
 
 private:
     bool m_bSliderInverted; ///< In some orientations, the slider is reflected
     SliderWidget *m_slider;
     Qt::Orientation m_orientation;
 };
 
 #endif