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guix/samples/demo_guix_keyboard/demo_guix_keyboard.c
Scott Larson 4dfb8c3da4 update to v6.1.3
2021-01-07 15:25:36 -08:00

310 lines
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C
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/* This is a small demo of the high-performance GUIX graphics framework. */
#include <stdio.h>
#include "gx_api.h"
#include "guix_keyboard_resources.h"
#include "guix_keyboard_specifications.h"
/* Define prototypes. */
UINT string_length_get(GX_CONST GX_CHAR* input_string, UINT max_string_length);
/* Define constants specific to this implemenation. */
#define KEY_PRESS_EVENT GX_FIRST_APP_EVENT
extern GX_CONST GX_THEME *display_1_theme_table[];
GX_WINDOW_ROOT *root;
/* declare a keyboard_key control block, derived from GX_PIXELMAP_BUTTON */
typedef struct KEY_WIDGET_STRUCT {
GX_PIXELMAP_BUTTON_MEMBERS_DECLARE
GX_RESOURCE_ID icon;
char *text;
USHORT key_val;
} KEY_WIDGET;
/* declare a structure to define one keyboard key */
typedef struct KEY_LAYOUT_ENTRY_STRUCT {
GX_VALUE xoffset;
GX_VALUE yoffset;
GX_RESOURCE_ID normal_background;
GX_RESOURCE_ID selected_background;
GX_RESOURCE_ID icon;
char *text;
USHORT key_val;
} KEY_LAYOUT_ENTRY;
/* define an array of keys. This array can easily be modified or new versions added to define
alternative keyboard layouts and keyboard key values
*/
#define MAX_KEY_LENGTH 5
#define NUM_DEFAULT_KEYS 33
KEY_WIDGET key_control_blocks[NUM_DEFAULT_KEYS];
KEY_LAYOUT_ENTRY key_layout_1[NUM_DEFAULT_KEYS + 1] = {
{ 0, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "A", 'A'},
{ 67, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "B", 'B'},
{134, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "C", 'C'},
{201, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "D", 'D'},
{268, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "E", 'E'},
{335, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "F", 'F'},
{402, 0, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "G", 'G'},
{ 0, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "H", 'H'},
{ 67, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "I", 'I'},
{134, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "J", 'J'},
{201, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "K", 'K'},
{268, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "L", 'L'},
{335, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "M", 'M'},
{402, 37, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "N", 'N'},
{ 0, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "O", 'O'},
{ 67, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "P", 'P'},
{134, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "Q", 'Q'},
{201, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "R", 'R'},
{268, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "S", 'S'},
{335, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "T", 'T'},
{402, 74, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "U", 'U'},
{ 0, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "@", '@'},
{ 67, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "V", 'V'},
{134, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "W", 'W'},
{201, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "X", 'X'},
{268, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "Y", 'Y'},
{335, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "Z", 'Z'},
{402, 111, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "Enter", GX_KEY_SELECT},
{ 0, 148, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "Home", GX_KEY_HOME},
{ 67, 148, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, GX_PIXELMAP_ID_I_LEFTARROW, NULL, GX_KEY_LEFT_ARROW},
{134, 148, GX_PIXELMAP_ID_B_SPACE, GX_PIXELMAP_ID_B_SPACE_H, 0, NULL, GX_KEY_SPACE},
{335, 148, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, GX_PIXELMAP_ID_I_RIGHTARROW, NULL, GX_KEY_RIGHT_ARROW},
{402, 148, GX_PIXELMAP_ID_B_KEYBOARD, GX_PIXELMAP_ID_B_KEYBOARD_H, 0, "End", GX_KEY_END},
{ 0, 0, 0, 0, 0, NULL, 0}
};
/* Define prototypes. */
VOID start_guix(VOID);
VOID PopulateKeyboardButtons(GX_WINDOW *frame, KEY_LAYOUT_ENTRY *layout);
extern UINT win32_graphics_driver_setup_24xrgb(GX_DISPLAY *display);
int main(int argc, char ** argv)
{
tx_kernel_enter();
return(0);
}
VOID tx_application_define(void *first_unused_memory)
{
start_guix();
}
VOID start_guix(VOID)
{
/* Initialize GUIX. */
gx_system_initialize();
gx_studio_display_configure(DISPLAY_1, win32_graphics_driver_setup_24xrgb,
LANGUAGE_ENGLISH, DISPLAY_1_DEFAULT_THEME, &root);
/* create the keyboard screen */
gx_studio_named_widget_create("keyboard_screen", (GX_WIDGET *) root, GX_NULL);
/* populate buttons into keyboard frame */
PopulateKeyboardButtons(&keyboard_screen.keyboard_screen_keyboard_frame,
key_layout_1);
gx_single_line_text_input_style_set(&keyboard_screen.keyboard_screen_keyboard_input_field,
GX_STYLE_ENABLED | GX_STYLE_CURSOR_BLINK | GX_STYLE_CURSOR_ALWAYS);
/* Show the root window to make it visible. */
gx_widget_show(root);
/* start GUIX thread */
gx_system_start();
}
VOID key_widget_draw(KEY_WIDGET *key)
{
INT x_offset = 0;
INT y_offset = 1;
GX_RESOURCE_ID font_id = GX_FONT_ID_MIDSIZE;
GX_PIXELMAP *map;
GX_STRING string;
gx_pixelmap_button_draw((GX_PIXELMAP_BUTTON *) key);
if (key->text)
{
string.gx_string_ptr = key->text;
string.gx_string_length = string_length_get(string.gx_string_ptr, MAX_KEY_LENGTH);
if (string.gx_string_length > 1)
{
font_id = GX_FONT_ID_DEFAULT;
}
if (key ->gx_widget_style & GX_STYLE_BUTTON_PUSHED)
{
x_offset++;
y_offset++;
}
gx_widget_text_draw_ext(key, GX_COLOR_ID_WHITE,
font_id, &string,
x_offset, y_offset);
}
else
{
if (key->icon)
{
gx_context_pixelmap_get(key->icon, &map);
if (map)
{
x_offset = key->gx_widget_size.gx_rectangle_right - key->gx_widget_size.gx_rectangle_left + 1;
x_offset -= map ->gx_pixelmap_width;
x_offset /=2;
x_offset += key->gx_widget_size.gx_rectangle_left;
y_offset = key->gx_widget_size.gx_rectangle_bottom - key->gx_widget_size.gx_rectangle_top + 1;
y_offset -= map ->gx_pixelmap_height;
y_offset /=2;
y_offset += key->gx_widget_size.gx_rectangle_top;
gx_canvas_pixelmap_draw(x_offset, y_offset, map);
}
}
}
}
VOID key_widget_select(GX_WIDGET *widget)
{
GX_BUTTON *button = (GX_BUTTON *) widget;
KEY_WIDGET *key = (KEY_WIDGET *) widget;
GX_EVENT notification;
/* Set style for pen down. */
button -> gx_widget_style |= GX_STYLE_BUTTON_PUSHED;
gx_widget_front_move(widget, NULL);
/* Mark as dirty. */
gx_system_dirty_mark(widget);
/* send notification to parent keyboard frame */
notification.gx_event_type = KEY_PRESS_EVENT;
notification.gx_event_payload.gx_event_ushortdata[0] = key->key_val;
notification.gx_event_target = 0;
widget->gx_widget_parent->gx_widget_event_process_function(widget->gx_widget_parent, &notification);
}
VOID key_widget_deselect(GX_WIDGET *key, GX_BOOL generate_event)
{
/* Set style for pen down. */
key -> gx_widget_style &= ~GX_STYLE_BUTTON_PUSHED;
/* Mark as dirty. */
gx_system_dirty_mark(key);
}
VOID key_widget_create(KEY_WIDGET *key_widget, USHORT id, KEY_LAYOUT_ENTRY *entry, GX_WIDGET *frame)
{
GX_RECTANGLE size;
INT left;
INT top;
const GX_THEME *theme_ptr;
GX_PIXELMAP *map;
theme_ptr = display_1_theme_table[0];
map = theme_ptr->theme_pixelmap_table[entry->selected_background];
left = frame->gx_widget_size.gx_rectangle_left + entry->xoffset;
top = frame->gx_widget_size.gx_rectangle_top + entry->yoffset;
gx_utility_rectangle_define(&size, left, top,
left + map->gx_pixelmap_width - 1,
top + map->gx_pixelmap_height - 1);
/* first create the base pixelmap button */
gx_pixelmap_button_create((GX_PIXELMAP_BUTTON *) key_widget,
NULL, frame,
entry->normal_background,
entry->selected_background,
0, GX_STYLE_HALIGN_CENTER | GX_STYLE_VALIGN_CENTER | GX_STYLE_ENABLED,
id, &size);
/* now initialize the extended fields */
key_widget->icon = entry->icon;
key_widget->text = entry->text;
key_widget->key_val = entry->key_val;
gx_widget_draw_set(key_widget, key_widget_draw);
key_widget->gx_button_select_handler = key_widget_select;
key_widget->gx_button_deselect_handler = key_widget_deselect;
}
VOID PopulateKeyboardButtons(GX_WINDOW *frame, KEY_LAYOUT_ENTRY *entry)
{
INT index = 0;
while(entry ->key_val)
{
key_widget_create(&key_control_blocks[index], index + 1, entry, (GX_WIDGET *) frame);
entry++;
index++;
}
}
UINT keyboard_frame_event_handler(GX_WINDOW *frame, GX_EVENT *event_ptr)
{
GX_EVENT key_event;
switch(event_ptr->gx_event_type)
{
case KEY_PRESS_EVENT:
/* these events arrive from the key buttons. generate keyboard input
events sent to the input field. The key value is held in the gx_event_ushortdata[0] field
*/
key_event.gx_event_target = (GX_WIDGET *)&keyboard_screen.keyboard_screen_keyboard_input_field;
key_event.gx_event_sender = frame ->gx_widget_id;
key_event.gx_event_payload.gx_event_ushortdata[0] = event_ptr->gx_event_payload.gx_event_ushortdata[0];
key_event.gx_event_type = GX_EVENT_KEY_DOWN;
gx_system_event_send(&key_event);
key_event.gx_event_type = GX_EVENT_KEY_UP;
gx_system_event_send(&key_event);
return 0;
default:
return gx_window_event_process(frame, event_ptr);
}
}
UINT input_field_event_process(GX_SINGLE_LINE_TEXT_INPUT *text_input, GX_EVENT *event_ptr)
{
if (event_ptr ->gx_event_type == GX_SIGNAL(IDB_BACKSPACE, GX_EVENT_CLICKED))
{
gx_single_line_text_input_backspace(text_input);
return 0;
}
return gx_single_line_text_input_event_process(text_input, event_ptr);
}
UINT string_length_get(GX_CONST GX_CHAR* input_string, UINT max_string_length)
{
UINT length = 0;
if (input_string)
{
/* Traverse the string. */
for (length = 0; input_string[length]; length++)
{
/* Check if the string length is bigger than the max string length. */
if (length >= max_string_length)
{
break;
}
}
}
return length;
}
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