App_widget_group

Data Structures
struct	widget_context
	Widget application context. More...

Enumerations
enum	command_id {   DUMMY_ID,   SLIDER_ID,   CHECK_BOX_ID,   RADIO_BUTTON_1_ID,   RADIO_BUTTON_2_ID,   BUTTON_ID }
	Command event IDs. More...

Functions
bool	app_widget_launch (void)
	Setup widget demo. More...
static void	app_widget_update_colors (struct widget_context *widget)
	Update colors. More...
static bool	widget_frame_command_handler (struct wtk_basic_frame *frame, win_command_t command_data)
	Frame handler for the application. More...

Variables
static const char	btn_string [] = "Reset Slider"
	Description for the button. More...
static const char	checkbox_string [] = "Invert colors"
	Description for the check box. More...
static const char	rb1_string [] = "Color scheme 1"
	Description for the first radio button. More...
static const char	rb2_string [] = "Color scheme 2"
	Description for the second radio button. More...
static struct widget_context *	widget_ctx
	Statically allocated context pointer. More...

Color scheme
#define	COLOR_SCHEME_0_FG   GFX_COLOR(30, 30, 200)
	Color scheme 0 foreground color. More...
#define	COLOR_SCHEME_0_BG   GFX_COLOR(255, 255, 255)
	Color scheme 0 background color. More...
#define	COLOR_SCHEME_1_FG   GFX_COLOR(0, 255, 0)
	Color scheme 1 foreground color. More...
#define	COLOR_SCHEME_1_BG   GFX_COLOR(0, 100, 100)
	Color scheme 1 background color. More...
#define	APP_BACKGROUND_COLOR   GFX_COLOR(220, 220, 220)
	Background color of the application frame. More...

Widget positions and sizes
#define	WIDGET_POS_X   14
	Leftmost X coordinate in frame for the widgets. More...
#define	WIDGET_POS_Y   5
	Topmost Y coordinate in frame for the widgets. More...
#define	SLIDER_POS_Y   10
	Slider X coordinate, inside frame. More...
#define	SLIDER_SIZE_X   120
	Width of slider. More...
#define	SLIDER_SIZE_Y   40
	Height of slider. More...
#define	SLIDER_PB_SPACING_X   10
	Spacing between the slider and progress bars. More...
#define	PB_SIZE_X   SLIDER_SIZE_X
	Width of progress bar. More...
#define	PB_SIZE_Y   SLIDER_SIZE_Y
	Height of progress bar. More...
#define	CHECK_BOX_SPACING_Y   20
	Spacing above check box to slider and progress bars. More...
#define	RADIO_BUTTON_SPACING_Y   10
	Spacing above each radio button. More...
#define	BUTTON_SPACING_Y   20
	Spacing above the button. More...
#define	BUTTON_SIZE_Y   30
	Height of the button. More...

#define APP_BACKGROUND_COLOR   GFX_COLOR(220, 220, 220)

Background color of the application frame.

Referenced by app_widget_launch().

#define BUTTON_SIZE_Y   30

Height of the button.

Referenced by app_widget_launch().

#define BUTTON_SPACING_Y   20

Spacing above the button.

Referenced by app_widget_launch().

#define CHECK_BOX_SPACING_Y   20

Spacing above check box to slider and progress bars.

Referenced by app_widget_launch().

#define COLOR_SCHEME_0_BG   GFX_COLOR(255, 255, 255)

Color scheme 0 background color.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_0_FG   GFX_COLOR(30, 30, 200)

Color scheme 0 foreground color.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_1_BG   GFX_COLOR(0, 100, 100)

Color scheme 1 background color.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_1_FG   GFX_COLOR(0, 255, 0)

Color scheme 1 foreground color.

Referenced by app_widget_update_colors().

#define PB_SIZE_X   SLIDER_SIZE_X

Width of progress bar.

Referenced by app_widget_launch().

#define PB_SIZE_Y   SLIDER_SIZE_Y

Height of progress bar.

Referenced by app_widget_launch().

#define RADIO_BUTTON_SPACING_Y   10

Spacing above each radio button.

Referenced by app_widget_launch().

#define SLIDER_PB_SPACING_X   10

Spacing between the slider and progress bars.

Referenced by app_widget_launch().

#define SLIDER_POS_Y   10

Slider X coordinate, inside frame.

Referenced by app_widget_launch().

#define SLIDER_SIZE_X   120

Width of slider.

Referenced by app_widget_launch().

#define SLIDER_SIZE_Y   40

Height of slider.

Referenced by app_widget_launch().

#define WIDGET_POS_X   14

Leftmost X coordinate in frame for the widgets.

Referenced by app_widget_launch().

#define WIDGET_POS_Y   5

Topmost Y coordinate in frame for the widgets.

Referenced by app_widget_launch().

enum command_id

Command event IDs.

Note

The first entry in this enum is zero-valued, and therefore reserved for widgets that should not issue command events.

See Also

Widget toolkit

Enumerator
DUMMY_ID	Unused command event ID.
SLIDER_ID	Command event ID for slider.
CHECK_BOX_ID	Command event ID for check box.
RADIO_BUTTON_1_ID	Command event ID for radio button 1.
RADIO_BUTTON_2_ID	Command event ID for radio button 2.
BUTTON_ID	Command event ID for button.

bool app_widget_launch

(

void

)

Setup widget demo.

Allocates memory for the application context, and creates all widgets that make up its interface. If memory allocation or widget creation fails, the application exits immediately.

Returns

Boolean true if the application was launched successfully, false if a memory allocation occurred.

References APP_BACKGROUND_COLOR, app_widget_update_colors(), win_attributes::area, btn_string, BUTTON_ID, BUTTON_SIZE_Y, BUTTON_SPACING_Y, CHECK_BOX_ID, CHECK_BOX_SPACING_Y, checkbox_string, gfx_bitmap::color, widget_context::color_invert, widget_context::color_scheme, gfx_bitmap::data, widget_context::frame, widget_context::frame_bg, GFX_BITMAP_SOLID, GFX_COLOR_BLACK, membag_alloc(), membag_free(), NULL, win_window::parent, widget_context::pb, PB_SIZE_X, PB_SIZE_Y, win_area::pos, RADIO_BUTTON_1_ID, RADIO_BUTTON_2_ID, RADIO_BUTTON_SPACING_Y, rb1_string, rb2_string, win_area::size, widget_context::slider, SLIDER_ID, SLIDER_PB_SPACING_X, SLIDER_POS_Y, SLIDER_SIZE_X, SLIDER_SIZE_Y, gfx_bitmap::type, widget_frame_command_handler(), WIDGET_POS_X, WIDGET_POS_Y, win_destroy(), win_get_attributes(), win_get_root(), win_inflate_area(), win_show(), wtk_basic_frame_as_child(), wtk_basic_frame_create(), wtk_button_as_child(), wtk_button_create(), wtk_button_size_hint(), wtk_check_box_as_child(), wtk_check_box_create(), wtk_check_box_size_hint(), wtk_progress_bar_as_child(), wtk_progress_bar_create(), WTK_PROGRESS_BAR_HORIZONTAL, wtk_radio_button_as_child(), wtk_radio_button_create(), wtk_radio_button_size_hint(), wtk_radio_group_create(), wtk_slider_as_child(), WTK_SLIDER_CMD_MOVE, WTK_SLIDER_CMD_RELEASE, wtk_slider_create(), WTK_SLIDER_HORIZONTAL, win_point::x, and win_point::y.

Referenced by main().

static void app_widget_update_colors ( struct widget_context *  widget )

static

Update colors.

Updates the colors for the progress bar and issues redrawing of the widgets.

Parameters

widget

Context for widget application

References widget_context::color_invert, widget_context::color_scheme, COLOR_SCHEME_0_BG, COLOR_SCHEME_0_FG, COLOR_SCHEME_1_BG, COLOR_SCHEME_1_FG, widget_context::pb, temp, win_redraw(), wtk_progress_bar_as_child(), and wtk_progress_bar_set_colors().

Referenced by app_widget_launch(), and widget_frame_command_handler().

static bool widget_frame_command_handler ( struct wtk_basic_frame *  frame, win_command_t  command_data  )

static

Frame handler for the application.

Handles all command events from the widgets in the application frame.

See Also

wtk_basic_frame_command_handler_t

Parameters

frame	Pointer to the application frame
command_data	Command event ID

Returns

True if exiting, to destroy the window

References app_widget_update_colors(), BUTTON_ID, CHECK_BOX_ID, widget_context::color_invert, widget_context::color_scheme, widget_context::pb, RADIO_BUTTON_1_ID, RADIO_BUTTON_2_ID, widget_context::slider, SLIDER_ID, wtk_basic_frame_get_custom_data(), wtk_progress_bar_set_value(), wtk_slider_get_value(), and wtk_slider_set_value().

Referenced by app_widget_launch().

const char btn_string[] = "Reset Slider"

static

Description for the button.

Referenced by app_widget_launch().

const char checkbox_string[] = "Invert colors"

static

Description for the check box.

Referenced by app_widget_launch().

const char rb1_string[] = "Color scheme 1"

static

Description for the first radio button.

Referenced by app_widget_launch().

const char rb2_string[] = "Color scheme 2"

static

Description for the second radio button.

Referenced by app_widget_launch().

struct widget_context* widget_ctx

static

Statically allocated context pointer.