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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file src/gwin/button.h
* @brief GWIN Graphic window subsystem header file.
*
* @defgroup Button Button
* @ingroup GWIN
*
* @details GWIN allows it to easily create buttons with different styles
* and check for different meta states such as: PRESSED, CLICKED,
* RELEASED etc.
*
* @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
* @pre GWIN_NEED_BUTTON must be set to TRUE in your gfxconf.h
* @{
*/
#ifndef _GWIN_BUTTON_H
#define _GWIN_BUTTON_H
/* This file is included within "gwin/gwidget.h" */
/**
* @brief The Event Type for a Button Event
*/
#define GEVENT_GWIN_BUTTON (GEVENT_GWIN_FIRST+0)
/**
* @brief A Button Event
* @note There are currently no GEventGWinButton listening flags - use 0 as the flags to @p gwinAttachListener()
*/
typedef struct GEventGWinButton {
GEventType type; // The type of this event (GEVENT_GWIN_BUTTON)
GHandle button; // The button that has been depressed (actually triggered on release)
} GEventGWinButton;
/**
* @brief The button widget structure
* @note Do not use the members directly - treat it as a black-box.
*/
typedef struct GButtonObject {
GWidgetObject w;
#if GINPUT_NEED_TOGGLE
uint16_t toggle;
#endif
} GButtonObject;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a button widget.
* @return NULL if there is no resultant drawing area, otherwise a window handle.
*
* @param[in] g The GDisplay to display this window on
* @param[in] gb The GButtonObject structure to initialise. If this is NULL the structure is dynamically allocated.
* @param[in] pInit The initialisation parameters
*
* @note The drawing color and the background color get set to the current defaults. If you haven't called
* @p gwinSetDefaultColor() or @p gwinSetDefaultBgColor() then these are White and Black respectively.
* @note The font gets set to the current default font. If you haven't called @p gwinSetDefaultFont() then there
* is no default font and text drawing operations will no nothing.
* @note A button remembers its normal drawing state. If there is a window manager then it is automatically
* redrawn if the window is moved or its visibility state is changed.
* @note A button supports mouse and a toggle input.
* @note When assigning a toggle, only one toggle is supported. If you try to assign more than one toggle it will
* forget the previous toggle. When assigning a toggle the role parameter must be 0.
*
* @api
*/
GHandle gwinGButtonCreate(GDisplay *g, GButtonObject *gb, const GWidgetInit *pInit);
#define gwinButtonCreate(gb, pInit) gwinGButtonCreate(GDISP, gb, pInit)
/**
* @brief Is the button current pressed
* @return TRUE if the button is depressed
*
* @param[in] gh The window handle (must be a button widget)
*
* @api
*/
bool_t gwinButtonIsPressed(GHandle gh);
/**
* @brief Some custom button drawing routines
* @details These function may be passed to @p gwinSetCustomDraw() to get different button drawing styles
*
* @param[in] gw The widget object (in this case a button)
* @param[in] param A parameter passed in from the user
*
* @note In your custom button drawing function you may optionally call these
* standard functions and then draw your extra details on top.
* @note The standard functions below ignore the param parameter except for @p gwinButtonDraw_Image().
* @note The image custom draw function @p gwinButtonDraw_Image() uses param to pass in the gdispImage pointer.
* The image must be already opened before calling @p gwinSetCustomDraw(). The image should be 3
* times the height of the button. The button image is repeated 3 times vertically, the first (top) for
* the "up" image, the 2nd for the "down" image, and the third (bottom) image for the disabled state. If
* the disabled state is never going to be used then the image can be just 2 times the button height.
* No checking is done to compare the size of the button to the size of the image.
* Note text is drawn on top of the image.
* @note These custom drawing routines don't have to worry about setting clipping as the framework
* sets clipping to the object window prior to calling these routines.
*
* @api
* @{
*/
void gwinButtonDraw_Normal(GWidgetObject *gw, void *param); // @< A standard button
#if GDISP_NEED_ARC || defined(__DOXYGEN__)
void gwinButtonDraw_Rounded(GWidgetObject *gw, void *param); // @< A rounded rectangle button
#endif
#if GDISP_NEED_ELLIPSE || defined(__DOXYGEN__)
void gwinButtonDraw_Ellipse(GWidgetObject *gw, void *param); // @< A circular button
#endif
#if GDISP_NEED_CONVEX_POLYGON || defined(__DOXYGEN__)
void gwinButtonDraw_ArrowUp(GWidgetObject *gw, void *param); // @< An up arrow button
void gwinButtonDraw_ArrowDown(GWidgetObject *gw, void *param); // @< A down arrow button
void gwinButtonDraw_ArrowLeft(GWidgetObject *gw, void *param); // @< A left arrow button
void gwinButtonDraw_ArrowRight(GWidgetObject *gw, void *param); // @< A right arrow button
#endif
#if GDISP_NEED_IMAGE || defined(__DOXYGEN__)
void gwinButtonDraw_Image(GWidgetObject *gw, void *param); // @< An image button - see the notes above on the param.
#endif
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* _GWIN_BUTTON_H */
/** @} */
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