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/*
ChibiOS/GFX - Copyright (C) 2012
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX 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 3 of the License, or
(at your option) any later version.
ChibiOS/GFX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file include/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
#if GWIN_NEED_BUTTON || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define GW_BUTTON 0x0002
#define GEVENT_GWIN_BUTTON (GEVENT_GWIN_FIRST+0)
/*===========================================================================*/
/* Type definitions */
/*===========================================================================*/
typedef struct GEventGWinButton_t {
GEventType type; // The type of this event (GEVENT_GWIN_BUTTON)
GHandle button; // The button that has been depressed (actually triggered on release)
} GEventGWinButton;
// There are currently no GEventGWinButton listening flags - use 0
typedef enum GButtonShape_e {
GBTN_3D, GBTN_SQUARE, GBTN_ROUNDED, GBTN_ELLIPSE
} GButtonShape;
typedef struct GButtonStyle_t {
GButtonShape shape;
color_t color_up_edge;
color_t color_up_fill;
color_t color_up_txt;
color_t color_dn_edge;
color_t color_dn_fill;
color_t color_dn_txt;
} GButtonStyle;
typedef enum GButtonType_e {
GBTN_NORMAL, GBTN_TOGGLE
} GButtonType;
typedef enum GButtonState_e {
GBTN_UP, GBTN_DOWN
} GButtonState;
// A button window
typedef struct GButtonObject_t {
GWindowObject gwin;
GButtonStyle style;
GButtonState state;
GButtonType type;
const char * txt;
GListener listener;
} GButtonObject;
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a button window.
* @return NULL if there is no resultant drawing area, otherwise a window handle.
*
* @param[in] gb The GButtonObject structure to initialise. If this is NULL the structure is dynamically allocated.
* @param[in] x,y The screen co-ordinates for the bottom left corner of the window
* @param[in] width The width of the window
* @param[in] height The height of the window
* @param[in] font The font to use
* @param[in] type The type of button
* @note The drawing color gets set to White and the background drawing color to Black.
* @note The dimensions and position may be changed to fit on the real screen.
* @note The button is not automatically drawn. Call gwinButtonDraw() after changing the button style or setting the text.
*
* @api
*/
GHandle gwinCreateButton(GButtonObject *gb, coord_t x, coord_t y, coord_t width, coord_t height, font_t font, GButtonType type);
/**
* @brief Set the style of a button.
* @details The button style is defined by its shape and colours.
*
* @param[in] gh The window handle (must be a button window)
* @param[in] style The button style to set.
* @note The button is not automatically redrawn. Call gwinButtonDraw() after changing the button style
*
* @api
*/
void gwinSetButtonStyle(GHandle gh, const GButtonStyle *style);
/**
* @brief Set the text of a button.
*
* @param[in] gh The window handle (must be a button window)
* @param[in] txt The button text to set. This must be a constant string unless useAlloc is set.
* @param[in] useAlloc If TRUE the string specified will be copied into dynamically allocated memory.
* @note The button is not automatically redrawn. Call gwinButtonDraw() after changing the button text.
*
* @api
*/
void gwinSetButtonText(GHandle gh, const char *txt, bool_t useAlloc);
/**
* @brief Redraw the button.
*
* @param[in] gh The window handle (must be a button window)
*
* @api
*/
void gwinButtonDraw(GHandle gh);
#define gwinGetButtonState(gh) (((GButtonObject *)(gh))->state)
/**
* @brief Get the source handle of a button
* @details Get the source handle of a button so the application can listen for events
*
* @param[in] gh The Hanlde
*/
#define gwinGetButtonSource(gh) ((GSourceHandle)(gh))
#if defined(GINPUT_NEED_MOUSE) && GINPUT_NEED_MOUSE
/**
* @brief Attach a mouse source
* @details Attach a mouse source to a given button
*
* @param[in] gh The button handle
* @param[in] gsh The source handle
*
* @return
*/
bool_t gwinAttachButtonMouseSource(GHandle gh, GSourceHandle gsh);
#endif
#if defined(GINPUT_NEED_TOGGLE) && GINPUT_NEED_TOGGLE
/**
* @brief Attach a toggle source
* @details Attach a toggle source to this button
*
* @gh The button handle
* @gsh The source handle
*
* @return
*/
bool_t gwinAttachButtonToggleSource(GHandle gh, GSourceHandle gsh);
#endif
#ifdef __cplusplus
}
#endif
#endif /* GWIN_NEED_BUTTON */
#endif /* _GWIN_BUTTON_H */
/** @} */
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