legato_widget_button.h

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/*******************************************************************************
 Module for Microchip Graphics Library - Legato User Interface Library
 
  Company:
    Microchip Technology Inc.
 
  File Name:
    legato_widget_button.h
 
  Summary:
    Defines a button widget
*******************************************************************************/
 
#ifndef LEGATO_BUTTON_H
#define LEGATO_BUTTON_H
 
#include "gfx/legato/common/legato_common.h"
 
#if LE_BUTTON_WIDGET_ENABLED == 1
 
#include "gfx/legato/widget/legato_widget.h"
 
#include "gfx/legato/image/legato_image.h"
#include "gfx/legato/string/legato_string.h"
 
// *****************************************************************************
// *****************************************************************************
// Section: Data Types and Constants
// *****************************************************************************
// *****************************************************************************
 
// *****************************************************************************
/* Enumeration:
    leButtonState
 
  Summary:
    Controls the button pressed state
*/
typedef enum leButtonState
{
    LE_BUTTON_STATE_UP,
    LE_BUTTON_STATE_DOWN,
    LE_BUTTON_STATE_TOGGLED
} leButtonState;
 
typedef struct leButtonWidget leButtonWidget;
 
// *****************************************************************************
/* Function Pointer:
    leButtonWidget_PressedEvent
 
  Summary:
    Button pressed event function callback type
*/
typedef void (*leButtonWidget_PressedEvent)(leButtonWidget*);
 
// *****************************************************************************
/* Function Pointer:
    leButtonWidget_ReleasedEvent
 
  Summary:
    Button released event function callback type
*/
typedef void (*leButtonWidget_ReleasedEvent)(leButtonWidget*);
 
 
/* internal use only */
typedef struct leButtonWidget leButtonWidget;
 
#define LE_BUTTONWIDGET_VTABLE(THIS_TYPE) \
    LE_WIDGET_VTABLE(THIS_TYPE) \
    \
    leBool                       (*getToggleable)(const THIS_TYPE* _this); \
    leResult                     (*setToggleable)(THIS_TYPE* _this, leBool toggleable); \
    leBool                       (*getPressed)(const THIS_TYPE* _this); \
    leResult                     (*setPressed)(THIS_TYPE* _this, leBool pressed); \
    leString*                    (*getString)(const THIS_TYPE* _this); \
    leResult                     (*setString)(THIS_TYPE* _this, const leString* str); \
    leImage*                     (*getPressedImage)(const THIS_TYPE* _this); \
    leResult                     (*setPressedImage)(THIS_TYPE* _this, leImage* img); \
    leImage*                     (*getReleasedImage)(const THIS_TYPE* _this); \
    leResult                     (*setReleasedImage)(THIS_TYPE* _this, leImage* img); \
    leRelativePosition           (*getImagePosition)(const THIS_TYPE* _this); \
    leResult                     (*setImagePosition)(THIS_TYPE* _this, leRelativePosition pos); \
    uint32_t                     (*getImageMargin)(const THIS_TYPE* _this); \
    leResult                     (*setImageMargin)(THIS_TYPE* _this, uint32_t mg); \
    int32_t                      (*getPressedOffset)(const THIS_TYPE* _this); \
    leResult                     (*setPressedOffset)(THIS_TYPE* _this, int32_t offs); \
    leButtonWidget_PressedEvent  (*getPressedEventCallback)(const THIS_TYPE* _this); \
    leResult                     (*setPressedEventCallback)(THIS_TYPE* _this, leButtonWidget_PressedEvent cb); \
    leButtonWidget_ReleasedEvent (*getReleasedEventCallback)(const THIS_TYPE* _this); \
    leResult                     (*setReleasedEventCallback)(THIS_TYPE* _this, leButtonWidget_ReleasedEvent cb); \
    
    
typedef struct leButtonWidgetVTable
{
    LE_BUTTONWIDGET_VTABLE(leButtonWidget)
} leButtonWidgetVTable; 
 
// *****************************************************************************
/* Structure:
    leButtonWidget
 
  Summary:
    Implementation of a button widget.  A button is an interactive element
    that simulates a typical button with a pressed an released state.
 
  Description:
 
 
  Remarks:
    None.
*/
typedef struct leButtonWidget
{
    leWidget widget;  // base widget header
 
    const leButtonWidgetVTable* fn;
 
    leButtonState state; // button state
    uint8_t toggleable; // indicates if the button is toggleable
 
    const leString* string; // the string that holds the button text
 
    const leImage* pressedImage; // button pressed icon image
    const leImage* releasedImage; // button released icon image
 
    leRelativePosition imagePosition; // icon position in relation to text
    uint32_t imageMargin; // distance between text and icon
    int32_t pressedOffset; // pressed text offset distance
 
    leButtonWidget_PressedEvent pressedEvent; // pressed event callback
    leButtonWidget_ReleasedEvent releasedEvent; // released event callback
} leButtonWidget;
 
// *****************************************************************************
// *****************************************************************************
// Section: Routines
// *****************************************************************************
// *****************************************************************************
 
LIB_EXPORT leButtonWidget* leButtonWidget_New();
 
LIB_EXPORT void leButtonWidget_Constructor(leButtonWidget* wgt);
 
#ifdef _DOXYGEN_
#define THIS_TYPE struct leWidget
 
virtual leBool getToggleable(const leButtonWidget* _this);
 
virtual leResult setToggleable(leButtonWidget* _this,
                               leBool toggleable);
 
virtual leBool getPressed(const leButtonWidget* _this);
 
virtual leResult setPressed(leButtonWidget* _this,
                            leBool pressed);
 
 
virtual leString* getString(const leButtonWidget* _this);
 
 
virtual leResult setString(leButtonWidget* _this,
                           const leString* str);
 
virtual leImage* getPressedImage(const leButtonWidget* _this);
 
 
virtual leResult setPressedImage(leButtonWidget* _this,
                                 leImage* img);
 
 
virtual leImage* getReleasedImage(const leButtonWidget* _this);
 
virtual leResult setReleasedImage(leButtonWidget* _this,
                                  leImage* img);
 
 
virtual leRelativePosition getImagePosition(const leButtonWidget* _this);
 
virtual leResult setImagePosition(leButtonWidget* _this,
                                  leRelativePosition pos);
 
virtual uint32_t getImageMargin(const leButtonWidget* _this);
 
virtual leResult setImageMargin(leButtonWidget* _this,
                                  uint32_t mg);
 
 
virtual int32_t getPressedOffset(const leButtonWidget* _this);
 
 
virtual leResult setPressedOffset(leButtonWidget* _this,
                                  int32_t offs);
 
virtual leButtonWidget_PressedEvent getPressedEventCallback(const leButtonWidget* _this);
 
virtual leResult setPressedEventCallback(leButtonWidget* _this,
                                         leButtonWidget_PressedEvent cb);
 
virtual leButtonWidget_ReleasedEvent getReleasedEventCallback(const leButtonWidget* _this);
 
 
virtual leResult setReleasedEventCallback(leButtonWidget* _this,
                                          leButtonWidget_ReleasedEvent cb);
 
#undef THIS_TYPE
#endif
 
 
#endif /* LE_BUTTON_WIDGET_ENABLED */
#endif /* LEGATO_BUTTON_H */