255 lines
9.0 KiB
C
255 lines
9.0 KiB
C
/*
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ChibiOS/GFX - Copyright (C) 2012, 2013
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Joel Bodenmann aka Tectu <joel@unormal.org>
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This file is part of ChibiOS/GFX.
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ChibiOS/GFX is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/GFX is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file include/gwin/button.h
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* @brief GWIN Graphic window subsystem header file.
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*
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* @defgroup Button Button
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* @ingroup GWIN
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*
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* @details GWIN allows it to easily create buttons with different styles
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* and check for different meta states such as: PRESSED, CLICKED,
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* RELEASED etc.
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*
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* @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
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* @pre GWIN_NEED_BUTTON must be set to TRUE in your gfxconf.h
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* @{
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*/
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#ifndef _GWIN_BUTTON_H
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#define _GWIN_BUTTON_H
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#if GWIN_NEED_BUTTON || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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#define GW_BUTTON 0x0002
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#define GEVENT_GWIN_BUTTON (GEVENT_GWIN_FIRST+0)
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/*===========================================================================*/
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/* Type definitions */
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/*===========================================================================*/
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typedef struct GEventGWinButton_t {
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GEventType type; // The type of this event (GEVENT_GWIN_BUTTON)
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GHandle button; // The button that has been depressed (actually triggered on release)
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} GEventGWinButton;
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// There are currently no GEventGWinButton listening flags - use 0
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typedef enum GButtonShape_e {
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GBTN_3D, GBTN_SQUARE, GBTN_ROUNDED, GBTN_ELLIPSE, GBTN_CUSTOM,
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GBTN_ARROW_UP, GBTN_ARROW_DOWN, GBTN_ARROW_LEFT, GBTN_ARROW_RIGHT,
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} GButtonShape;
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typedef struct GButtonDrawStyle_t {
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color_t color_edge;
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color_t color_fill;
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color_t color_txt;
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} GButtonDrawStyle;
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typedef enum GButtonType_e {
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GBTN_NORMAL, GBTN_TOGGLE
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} GButtonType;
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typedef enum GButtonState_e {
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GBTN_UP, GBTN_DOWN
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} GButtonState;
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typedef void (*GButtonDrawFunction)(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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// A button window
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typedef struct GButtonObject_t {
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GWindowObject gwin;
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GButtonDrawStyle up;
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GButtonDrawStyle dn;
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GButtonState state;
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GButtonType type;
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const char *txt;
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GButtonDrawFunction fn;
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void *param;
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GListener listener;
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} GButtonObject;
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Create a button window.
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* @return NULL if there is no resultant drawing area, otherwise a window handle.
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*
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* @param[in] gb The GButtonObject structure to initialise. If this is NULL the structure is dynamically allocated.
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* @param[in] x,y The screen co-ordinates for the bottom left corner of the window
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* @param[in] width The width of the window
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* @param[in] height The height of the window
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* @param[in] font The font to use
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* @param[in] type The type of button
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* @note The drawing color gets set to White and the background drawing color to Black.
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* @note The dimensions and position may be changed to fit on the real screen.
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* @note The button is not automatically drawn. Call gwinButtonDraw() after changing the button style or setting the text.
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*
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* @api
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*/
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GHandle gwinCreateButton(GButtonObject *gb, coord_t x, coord_t y, coord_t width, coord_t height, font_t font, GButtonType type);
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/**
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* @brief Set the style of a button.
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* @details The button style is defined by its shape and colours.
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*
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* @param[in] gh The window handle (must be a button window)
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* @param[in] shape The shape of the button.
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* @param[in] pUp The styling for the button when in the up state.
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* @param[in] pDown The styling for the button when in the down state.
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*
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* @note The button is not automatically redrawn. Call gwinButtonDraw() after changing the button style
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* @note The button style is copied into the internal button structure - there is no need to
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* maintain a static style structures.
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* @note The pUp and pDown parameters can be NULL. If they are then the existing color styles
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* are not changed for that button state.
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*
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* @api
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*/
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void gwinSetButtonStyle(GHandle gh, GButtonShape shape, const GButtonDrawStyle *pUp, const GButtonDrawStyle *pDown);
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/**
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* @brief Set the text of a button.
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*
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* @param[in] gh The window handle (must be a button window)
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* @param[in] txt The button text to set. This must be a constant string unless useAlloc is set.
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* @param[in] useAlloc If TRUE the string specified will be copied into dynamically allocated memory.
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* @note The button is not automatically redrawn. Call gwinButtonDraw() after changing the button text.
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*
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* @api
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*/
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void gwinSetButtonText(GHandle gh, const char *txt, bool_t useAlloc);
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/**
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* @brief Redraw the button.
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*
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* @param[in] gh The window handle (must be a button window)
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*
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* @api
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*/
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void gwinButtonDraw(GHandle gh);
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/**
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* @brief Set the callback routine to perform a custom button drawing.
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*
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* @param[in] gh The window handle (must be a button window)
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* @param[in] fn The function to use to draw the button
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* @param[in] param A parameter to pass to the button drawing function
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*
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* @api
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*/
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void gwinSetButtonCustom(GHandle gh, GButtonDrawFunction fn, void *param);
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#define gwinGetButtonState(gh) (((GButtonObject *)(gh))->state)
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/**
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* @brief Get the source handle of a button
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* @details Get the source handle of a button so the application can listen for events
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*
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* @param[in] gh The window handle
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*
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* @api
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*/
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#define gwinGetButtonSource(gh) ((GSourceHandle)(gh))
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#if defined(GINPUT_NEED_MOUSE) && GINPUT_NEED_MOUSE
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/**
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* @brief Attach a mouse source
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* @details Attach a mouse source to a given button
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*
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* @param[in] gh The button handle
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* @param[in] gsh The source handle
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*
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* @api
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*/
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bool_t gwinAttachButtonMouseSource(GHandle gh, GSourceHandle gsh);
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#endif
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#if defined(GINPUT_NEED_TOGGLE) && GINPUT_NEED_TOGGLE
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/**
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* @brief Attach a toggle source
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* @details Attach a toggle source to this button
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*
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* @param[in] gh The button handle
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* @param[in] gsh The source handle
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*
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* @api
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*/
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bool_t gwinAttachButtonToggleSource(GHandle gh, GSourceHandle gsh);
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#endif
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/**
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* @brief Standard button drawing routines
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* @details These routines are called to draw the standard button styles.
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*
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* @param[in] gh The button handle
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* @param[in] isdown Is the button currently down (depressed)
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* @param[in] txt The text to be display inside the button
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* @param[in] pstyle The current drawing style for the state we are in
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* @param[in] param A parameter passed in from the user
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*
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* @note In your custom button drawing function you may optionally call these
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* standard functions and then draw your extra details on top.
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* @note The standard functions below ignore the param parameter. It is there
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* only to ensure the functions match the GButtonDrawFunction type.
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* @note When called by a button press/release the framework ensure that it is
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* a button object and sets up clipping to the button object window. These
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* drawing routines then don't have to worry about explicitly doing that.
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*
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* @api
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* @{
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*/
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void gwinButtonDraw_3D(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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void gwinButtonDraw_Square(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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#if GDISP_NEED_ARC || defined(__DOXYGEN__)
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void gwinButtonDraw_Rounded(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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#endif
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#if GDISP_NEED_ELLIPSE || defined(__DOXYGEN__)
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void gwinButtonDraw_Ellipse(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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#endif
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#if GDISP_NEED_CONVEX_POLYGON || defined(__DOXYGEN__)
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void gwinButtonDraw_ArrowUp(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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void gwinButtonDraw_ArrowDown(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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void gwinButtonDraw_ArrowLeft(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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void gwinButtonDraw_ArrowRight(GHandle gh, bool_t isdown, const char *txt, const GButtonDrawStyle *pstyle, void *param);
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#endif
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* GWIN_NEED_BUTTON */
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#endif /* _GWIN_BUTTON_H */
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/** @} */
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