1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* 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_radio.h
* @brief GWIN Graphic window subsystem header file.
*
* @defgroup RadioButton RadioButton
* @ingroup Widgets
*
* @details GWIN allows it to easily create radio buttons with different styles.
*
* @pre GFX_USE_GWIN must be set to TRUE in your gfxconf.h
* @pre GWIN_NEED_RADIO must be set to TRUE in your gfxconf.h
* @{
*/
#ifndef _GWIN_RADIO_H
#define _GWIN_RADIO_H
/* This file is included within "src/gwin/gwin_widget.h" */
/**
* @brief The Event Type for a Radio Event
*/
#define GEVENT_GWIN_RADIO (GEVENT_GWIN_CTRL_FIRST+3)
/**
* @brief A Button Event
* @note There are currently no GEventGWinRadio listening flags - use 0 as the flags to @p gwinAttachListener()
*/
typedef struct GEventGWinRadio {
GEventType type; // The type of this event (GEVENT_GWIN_RADIO)
GHandle gwin; // The radio button that has been depressed
#if GWIN_WIDGET_TAGS
WidgetTag tag; // The radio tag
#endif
uint16_t group; // The group for this radio button
} GEventGWinRadio;
/**
* @brief The radio button widget structure
* @note Do not use the members directly - treat it as a black-box.
*/
typedef struct GRadioObject {
GWidgetObject w;
#if GINPUT_NEED_TOGGLE
uint16_t toggle;
#endif
uint16_t group;
} GRadioObject;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Create a radio 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 GRadioObject structure to initialise. If this is NULL the structure is dynamically allocated.
* @param[in] pInit The initialisation parameters
* @param[in] group The group of radio buttons this radio button belongs to.
*
* @note Only one radio button in any group is ever pressed at one time. Pressing one radio button will
* release all others in the group.
* @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 radio 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 radio 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 gwinGRadioCreate(GDisplay *g, GRadioObject *gb, const GWidgetInit *pInit, uint16_t group);
#define gwinRadioCreate(w, pInit, gr) gwinGRadioCreate(GDISP, w, pInit, gr)
/**
* @brief Press this radio button (and by definition unset any others in the group)
*
* @param[in] gh The window handle (must be a radio widget)
*
* @api
*/
void gwinRadioPress(GHandle gh);
/**
* @brief Is the radio button currently pressed
* @return TRUE if the button is pressed
*
* @param[in] gh The window handle (must be a radio widget)
*
* @api
*/
bool_t gwinRadioIsPressed(GHandle gh);
/**
* @brief Find the currently pressed radio button in the specified group
* @return The handle of the pressed radio button or NULL if none are pressed
*
* @param[in] group The radio button group to be examined
*
* @return The handle of the currently pressed radio button
*
* @api
*/
GHandle gwinRadioGetActive(uint16_t group);
/**
* @brief Some custom radio button drawing routines
* @details These function may be passed to @p gwinSetCustomDraw() to get different radio button drawing styles
*
* @param[in] gw The widget object (in this case a radio button)
* @param[in] param A parameter passed in from the user
*
* @note In your custom radio 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.
* @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 gwinRadioDraw_Radio(GWidgetObject *gw, void *param); // @< A standard radio button
void gwinRadioDraw_Button(GWidgetObject *gw, void *param); // @< Draw as a button
void gwinRadioDraw_Tab(GWidgetObject *gw, void *param); // @< Draw as a tab
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* _GWIN_RADIO_H */
/** @} */
|
