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149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* This is a small demo of the high-performance GUIX graphics framework. */
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#include <stdio.h>
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#include "gx_api.h"
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#include "all_widgets_4bpp_resources.h"
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#include "all_widgets_4bpp_specifications.h"
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#define LINE_LENGTH 100
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#define LINE_WINDOW_LINE_LENGTH 80
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#define LINE_CENTER_X_OFFSET 150
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#define LINE_CENTER_Y_OFFSET 150
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GX_WINDOW *pLineWin = &line_screen.line_screen_line_window;
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int line_angle = 0;
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int line_width = 1;
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GX_BOOL rounded = GX_FALSE;
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int line_x1;
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int line_x2;
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int line_y1;
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int line_y2;
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INT line_pattern;
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VOID calculate_line_ends(VOID)
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{
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INT scaled_angle;
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INT x_dist;
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INT y_dist;
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INT x_center = pLineWin->gx_widget_size.gx_rectangle_left + LINE_CENTER_X_OFFSET;
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INT y_center = pLineWin->gx_widget_size.gx_rectangle_top + LINE_CENTER_Y_OFFSET;
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scaled_angle = GX_FIXED_VAL_MAKE(line_angle);
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x_dist = GX_FIXED_VAL_TO_INT(gx_utility_math_cos(scaled_angle) * LINE_WINDOW_LINE_LENGTH);
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y_dist = GX_FIXED_VAL_TO_INT(gx_utility_math_sin(scaled_angle) * LINE_WINDOW_LINE_LENGTH);
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line_x1 = x_center - x_dist;
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line_x2 = x_center + x_dist;
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line_y1 = y_center - y_dist;
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line_y2 = y_center + y_dist;
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}
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VOID update_width_prompt(VOID)
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{
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GX_PROMPT *pp;
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static GX_CHAR width_val[10];
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GX_STRING string;
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gx_widget_find((GX_WINDOW *)&line_screen, ID_WIDTH_DISPLAY, 0, &pp);
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if (pp)
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{
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gx_utility_ltoa(line_width, width_val, 10);
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string.gx_string_ptr = width_val;
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string.gx_string_length = strnlen(width_val, sizeof(width_val));
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gx_prompt_text_set_ext(pp, &string);
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}
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}
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VOID update_line_angle_prompt(VOID)
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{
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GX_PROMPT *pp;
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static GX_CHAR angle_val[10];
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GX_STRING string;
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gx_widget_find((GX_WINDOW *)&line_screen, ID_ANGLE_PROMPT, 0, &pp);
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if (pp)
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{
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gx_utility_ltoa(line_angle, angle_val, 10);
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string.gx_string_ptr = angle_val;
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string.gx_string_length = strnlen(angle_val, sizeof(angle_val));
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gx_prompt_text_set_ext(pp, &string);
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}
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}
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UINT line_screen_event_handler(GX_WINDOW *window, GX_EVENT *myevent)
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{
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UINT status = 0;
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switch (myevent->gx_event_type)
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{
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case GX_SIGNAL(ID_LINE_WIDTH, GX_EVENT_SLIDER_VALUE):
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line_width = myevent->gx_event_payload.gx_event_longdata;
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update_width_prompt();
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gx_system_dirty_mark(pLineWin);
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break;
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case GX_SIGNAL(ID_LINE_ANGLE, GX_EVENT_SLIDER_VALUE):
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line_angle = myevent->gx_event_payload.gx_event_longdata;
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update_line_angle_prompt();
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calculate_line_ends();
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gx_system_dirty_mark(pLineWin);
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break;
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case GX_SIGNAL(ID_ROUNDED, GX_EVENT_TOGGLE_ON):
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rounded = GX_TRUE;
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gx_system_dirty_mark(pLineWin);
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break;
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case GX_SIGNAL(ID_ROUNDED, GX_EVENT_TOGGLE_OFF):
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rounded = GX_FALSE;
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gx_system_dirty_mark(pLineWin);
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break;
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case GX_SIGNAL(ID_PATTERN, GX_EVENT_TOGGLE_ON):
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line_pattern = 0x0f0f0f0f;
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gx_system_dirty_mark(pLineWin);
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break;
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case GX_SIGNAL(ID_PATTERN, GX_EVENT_TOGGLE_OFF):
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line_pattern = 0;
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gx_system_dirty_mark(pLineWin);
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break;
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default:
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status = next_button_handler(window, myevent);
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break;
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}
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return status;
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}
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VOID line_win_draw(GX_WINDOW *window)
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{
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ULONG brush_style = 0;
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GX_BRUSH *brush = GX_NULL;
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gx_window_draw((GX_WINDOW*)window);
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if (rounded)
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{
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brush_style |= GX_BRUSH_ROUND;
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}
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gx_context_raw_brush_define(0xffffff, 0x555555, brush_style);
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gx_context_brush_width_set(line_width);
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gx_context_brush_get(&brush);
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if (brush)
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{
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brush->gx_brush_line_pattern = line_pattern;
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gx_context_brush_set(brush);
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}
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calculate_line_ends();
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gx_canvas_line_draw(line_x1, line_y1, line_x2, line_y2);
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}
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