Widget demo application
[Applications]

This application demonstrates most of the available widgets in the Widget toolkit. More...

Collaboration diagram for Widget demo application:

Data Structures

struct  widget_context
 Widget application context. More...

Enumerations

enum  command_id {
  RADIO_DEC_ID = 123, RADIO_HEX_ID, BUTTON_EXIT_ID, DUMMY_ID,
  SLIDER_ID, CHECK_BOX_ID, RADIO_BUTTON_1_ID, RADIO_BUTTON_2_ID,
  BUTTON_QUIT_ID
}
 

Command event IDs.

More...

Functions

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

Variables

static const char demo_string [] = "Demonstrating widgets"
 Description for label.
static const char checkbox_string [] = "Invert colors"
 Description for check box.
static const char rb1_string [] = "Color scheme 1"
 Description for radio buttons.
static const char rb2_string [] = "Color scheme 2"
 Description for radio buttons.
static struct widget_context * widget_ctx
 Statically allocated context pointer.

Color scheme



#define COLOR_SCHEME_0_FG   GFX_COLOR(255,255,0)
 Color scheme 0 foreground color.
#define COLOR_SCHEME_0_BG   GFX_COLOR(0,50,0)
 Color scheme 0 background color.
#define COLOR_SCHEME_1_FG   GFX_COLOR(0,255,0)
 Color scheme 1 foreground color.
#define COLOR_SCHEME_1_BG   GFX_COLOR(0,100,100)
 Color scheme 1 background color.
#define APP_BACKGROUND_COLOR   GFX_COLOR(0,0,0)
 Background color for application.
#define SUBFRAME_BACKGROUND_COLOR   GFX_COLOR(90,90,90)
 Background color for subframe.

Widget positions and sizes



#define LABEL_POS_X   10
 Label X coordinate.
#define LABEL_POS_Y   10
 Label Y coordinate.
#define SUBFRAME_HORIZONTAL_SPACING   45
 Spacing on each side of the subframe.
#define SUBFRAME_TOP_SPACING   10
 Spacing from label to subframe.
#define SUBFRAME_BOTTOM_SPACING   30
 Spacing from subframe to bottom of screen.
#define WIDGET_POS_X   10
 Leftmost X coordinate in subframe for the widgets.
#define SLIDER_POS_Y   10
 Slider X coordinate, inside subframe.
#define SLIDER_SIZE_X   80
 Width of slider.
#define SLIDER_SIZE_Y   40
 Height of slider.
#define SLIDER_PB_SPACING_X   10
 Spacing between the slider and progress bars.
#define PB_SIZE_X   SLIDER_SIZE_X
 Width of progress bar.
#define PB_SIZE_Y   SLIDER_SIZE_Y
 Height of progress bar.
#define CHECK_BOX_SPACING_Y   20
 Spacing above check box to slider and progress bars.
#define RADIO_BUTTON_SPACING_Y   5
 Spacing above each radio button.

Detailed Description

This application demonstrates most of the available widgets in the Widget toolkit.

The application consists of a slider and progress bar, a check box and two radio buttons. The user can change the progress bar by moving the slider, and change the colors of the progress bar by use of the check box and radio buttons.

Define Documentation

#define APP_BACKGROUND_COLOR   GFX_COLOR(0,0,0)

Background color for application.

Definition at line 96 of file app_widget.c.

#define CHECK_BOX_SPACING_Y   20

Spacing above check box to slider and progress bars.

Definition at line 138 of file app_widget.c.

#define COLOR_SCHEME_0_BG   GFX_COLOR(0,50,0)

Color scheme 0 background color.

Definition at line 90 of file app_widget.c.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_0_FG   GFX_COLOR(255,255,0)

Color scheme 0 foreground color.

Definition at line 88 of file app_widget.c.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_1_BG   GFX_COLOR(0,100,100)

Color scheme 1 background color.

Definition at line 94 of file app_widget.c.

Referenced by app_widget_update_colors().

#define COLOR_SCHEME_1_FG   GFX_COLOR(0,255,0)

Color scheme 1 foreground color.

Definition at line 92 of file app_widget.c.

Referenced by app_widget_update_colors().

#define LABEL_POS_X   10

Label X coordinate.

Definition at line 109 of file app_widget.c.

#define LABEL_POS_Y   10

Label Y coordinate.

Definition at line 111 of file app_widget.c.

#define PB_SIZE_X   SLIDER_SIZE_X

Width of progress bar.

Definition at line 133 of file app_widget.c.

#define PB_SIZE_Y   SLIDER_SIZE_Y

Height of progress bar.

Definition at line 135 of file app_widget.c.

#define RADIO_BUTTON_SPACING_Y   5

Spacing above each radio button.

Definition at line 141 of file app_widget.c.

#define SLIDER_PB_SPACING_X   10

Spacing between the slider and progress bars.

Definition at line 131 of file app_widget.c.

#define SLIDER_POS_Y   10

Slider X coordinate, inside subframe.

Definition at line 124 of file app_widget.c.

#define SLIDER_SIZE_X   80

Width of slider.

Definition at line 126 of file app_widget.c.

#define SLIDER_SIZE_Y   40

Height of slider.

Definition at line 128 of file app_widget.c.

#define SUBFRAME_BACKGROUND_COLOR   GFX_COLOR(90,90,90)

Background color for subframe.

Definition at line 98 of file app_widget.c.

#define SUBFRAME_BOTTOM_SPACING   30

Spacing from subframe to bottom of screen.

Definition at line 118 of file app_widget.c.

#define SUBFRAME_HORIZONTAL_SPACING   45

Spacing on each side of the subframe.

Definition at line 114 of file app_widget.c.

#define SUBFRAME_TOP_SPACING   10

Spacing from label to subframe.

Definition at line 116 of file app_widget.c.

#define WIDGET_POS_X   10

Leftmost X coordinate in subframe for the widgets.

Definition at line 121 of file app_widget.c.

Enumeration Type Documentation

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:
RADIO_DEC_ID 

Command event ID for DEC radio button.

RADIO_HEX_ID 

Command event ID for HEX radio button.

BUTTON_EXIT_ID 

Command event ID for exit button.

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 button 1.

RADIO_BUTTON_2_ID 

Command event ID for button 2.

BUTTON_QUIT_ID 

Command event ID for quit button.

Definition at line 66 of file app_widget.c.

Function Documentation

void app_widget_launch ( struct workqueue_task *  task  ) 

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.

Parameters:
task Workqueue task used to start the application.
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

Definition at line 185 of file app_widget.c.

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, win_redraw(), wtk_progress_bar_as_child(), and wtk_progress_bar_set_colors().

Referenced by 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

Definition at line 227 of file app_widget.c.

References app_desktop_restart(), app_widget_update_colors(), BUTTON_QUIT_ID, CHECK_BOX_ID, widget_context::color_invert, widget_context::color_scheme, membag_free(), memcpy(), widget_context::old_sysfont, widget_context::pb, RADIO_BUTTON_1_ID, RADIO_BUTTON_2_ID, widget_context::slider, SLIDER_ID, sysfont, wtk_basic_frame_get_custom_data(), wtk_progress_bar_set_value(), and wtk_slider_get_value().

Variable Documentation

const char checkbox_string[] = "Invert colors" [static]

Description for check box.

Definition at line 148 of file app_widget.c.

const char demo_string[] = "Demonstrating widgets" [static]

Description for label.

Definition at line 146 of file app_widget.c.

const char rb1_string[] = "Color scheme 1" [static]

Description for radio buttons.

Definition at line 150 of file app_widget.c.

const char rb2_string[] = "Color scheme 2" [static]

Description for radio buttons.

Definition at line 152 of file app_widget.c.

struct widget_context* widget_ctx [static]

Statically allocated context pointer.

Definition at line 176 of file app_widget.c.

Generated on Thu Apr 29 14:09:59 2010 for display-demo by  doxygen 1.6.3