SoView2DButton.h

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/*************************************************************************************
**
** Copyright 2016, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#pragma once
 
#include "SoView2DSystem.h"
#include "SoView2DInteractionExtension.h"
#include "SoView2D.h"
 
#include "../View2DIcons.h"
 
 
enum DeviceCoordinateMode
{
  DEVICE_COORDINATES_RELATIVE,
  DEVICE_COORDINATES_ABSOLUTE
};
 
enum ButtonState
{
  BUTTON_DEFAULT,
  BUTTON_PRESSED,
  BUTTON_MOUSE_OVER,
  BUTTON_PRESSED_AND_MOUSE_OVER
};
 
class SOVIEW2D_API SoView2DButton : public SoView2DInteractionExtension
{
  SO_NODE_HEADER(SoView2DButton);
 
public:
  SoView2DButton();
  ~SoView2DButton() override;
 
  static void initClass();
 
  SoSFTypedEnum<DeviceCoordinateMode> deviceCoordinateMode;
  SoSFVec2f deviceCoordinatePosition;
  SoSFVec2f deviceSize;
 
  SoSFString defaultIconFile;
  SoSFString pressedIconFile;
  SoSFString mouseOverIconFile;
  SoSFString pressedAndMouseOverIconFile;
 
  SoSFString defaultInternalIconFile;
  SoSFString pressedInternalIconFile;
  SoSFString mouseOverInternalIconFile;
  SoSFString pressedAndMouseOverInternalIconFile;
 
  SoSFTrigger clickedTrigger;
  SoSFBool isPressed;
  SoSFBool isMouseOver;
 
protected:
  void draw(View2DSliceList* dsl, View2DSlice* dslice, int slice) override;
  bool evalEvent(SoView2D* , View2DSliceList* , View2DEvent* , View2DEventPhase ) override { return false; }
  bool ignoreEvent(View2DEvent* ) override { return false; }
  bool implementsManagedInteractionAndClassicEventHandling() const override { return false; }
 
  bool isSensitiveAt(const SoPointerPosition& pos) override;
  void unsetHighlight() override;
  void startPressAt(const SoPointerPosition& pos) override;
  void dragMoveTo(const SoPointerPosition& pos) override;
  SoPointingAction* endPress(int clickCount) override;
 
  bool isMouseOverButton(const SoPointerPosition& pos);
 
  View2DIcons* _defaultIcon;
  View2DIcons* _pressedIcon;
  View2DIcons* _mouseOverIcon;
  View2DIcons* _pressedAndMouseOverIcon;
 
  void defaultIconChanged(SoField*);
  void pressedIconChanged(SoField*);
  void mouseOverIconChanged(SoField*);
  void pressedAndMouseOverIconChanged(SoField*);
 
  ButtonState _buttonRenderingState;
 
  void setupDefaultIcon();
  void setupPressedIcon();
  void setupMouseOverIcon();
  void setupPressedAndMouseOverIcon();
 
  void setupIcon(View2DIcons* & icons, const std::string& filename);
  bool computeIconPosition(View2DSliceList* sliceList, int z, SbVec2f& minIconPosition, SbVec2f& maxIconPosition);
  bool fillVisibleDeviceRect(View2DSliceList* sliceList, int z, SbVec2f& minDeviceRect, SbVec2f& maxDeviceRect);
};