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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/gwin_keyboard.h
* @brief GWIN Graphic window subsystem header file.
*
* @defgroup VirtualKeyboard VirtualKeyboard
* @ingroup Widgets
*
* @brief Keyboard widget. Used to provide a virtual on-screen keyboard.
*
* @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_KEYBOARD_H
#define _GWIN_KEYBOARD_H
/* This file is included within "src/gwin/gwin_widget.h" */
/**
* @brief The Event Type for a Button Event
*/
#define GEVENT_GWIN_KEYBOARD (GEVENT_GWIN_CTRL_FIRST+6)
/**
* @brief A Keyboard Event
* @note There are currently no GEventGWinButton listening flags - use 0 as the flags to @p gwinAttachListener()
*/
typedef GEventGWin GEventGWinKeyboard;
/**
* @brief The internal keyboard flags and other defines
* @note Used only for writing a custom draw routine.
* @{
*/
#define GKEYBOARD_FLG_REVERTSET 0x01
#define GKEYBOARD_FLG_QUICKUPDATE 0x02
#define GKEY_BAD_ROWCOL 255
/** @} */
/**
* @brief The keyboard widget structure
* @note Do not use the members directly - treat it as a black-box.
*/
typedef struct GKeyboardObject {
GWidgetObject w;
const struct GVKeyTable *keytable;
const char **keyset;
coord_t keyx, keyy;
coord_t keycx, keycy;
uint8_t lastkeyrow, lastkeycol;
uint8_t keyrow, keycol;
uint32_t key;
} GKeyboardObject;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a keyboard 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 GKeyboardObject 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 keyboard 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 keyboard supports mouse input.
*
* @api
*/
GHandle gwinGKeyboardCreate(GDisplay *g, GKeyboardObject *gb, const GWidgetInit *pInit);
#define gwinKeyboardCreate(gb, pInit) gwinGKeyboardCreate(GDISP, gb, pInit)
/**
* @brief Get the keyboard event source for a GWIN virtual keyboard
* @return The event source handle or NULL if this is not a virtual keyboard
*
* @param[in] gh The GWIN virtual keyboard
*
* @note Normal GINPUT Keyboard events are returned by this event source.
*/
GSourceHandle gwinKeyboardGetEventSource(GHandle gh);
/**
* @brief Set the layout for the virtual keyboard
*
* @param[in] gh The GWIN virtual keyboard
* @param[in] layout The keyboard layout to use (described by gwin_keyboard_layout.h)
*
* @note Changing the layout resets the keyboard to key set 0 of the keyboard and cancels any
* pending shifts.
*/
void gwinKeyboardSetLayout(GHandle gh, const struct GVKeyTable *layout);
/**
* @defgroup Renderings_Keyboard Renderings
*
* @brief Built-in rendering functions for the keyboard widget.
*
* @details These function may be passed to @p gwinSetCustomDraw() to get different keyboard drawing styles.
*
* @note In your custom keyboard drawing function you may optionally call these
* standard functions and then draw your extra details on top.
* @note The built-in functions below ignore the param parameter.
* @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.
*
* @{
*/
/**
* @brief The default rendering function for the keyboard widget
*
* @param[in] gw The widget object (must be a keyboard object)
* @param[in] param A parameter passed in from the user. Ignored by this function.
*
* @api
*/
void gwinKeyboardDraw_Normal(GWidgetObject *gw, void *param);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* _GWIN_KEYBOARD_H */
/** @} */
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