1 /* This is a small demo of the high-performance GUIX graphics framework. */
2
3 #include <stdio.h>
4 #include "gx_api.h"
5 #include "partial_frame_buffer_16bpp_resources.h"
6 #include "partial_frame_buffer_16bpp_specifications.h"
7
8
9 #define LINE_LENGTH 100
10 #define LINE_CENTER_X_OFFSET 159
11 #define LINE_CENTER_Y_OFFSET 159
12
13 GX_WINDOW *pLineWin = &line_screen.line_screen_line_window;
14 int line_angle = 0;
15 int line_width = 1;
16 GX_BOOL rounded = GX_FALSE;
17 GX_BOOL anti_alised_line = GX_FALSE;
18 int line_x1;
19 int line_x2;
20 int line_y1;
21 int line_y2;
22 INT line_pattern;
23
24
calculate_line_ends(VOID)25 VOID calculate_line_ends(VOID)
26 {
27 INT scaled_angle;
28 INT x_dist;
29 INT y_dist;
30
31 INT x_center = pLineWin->gx_widget_size.gx_rectangle_left + LINE_CENTER_X_OFFSET;
32 INT y_center = pLineWin->gx_widget_size.gx_rectangle_top + LINE_CENTER_Y_OFFSET;
33
34 scaled_angle = GX_FIXED_VAL_MAKE(line_angle);
35 x_dist = GX_FIXED_VAL_TO_INT(gx_utility_math_cos(scaled_angle) * LINE_LENGTH);
36 y_dist = GX_FIXED_VAL_TO_INT(gx_utility_math_sin(scaled_angle) * LINE_LENGTH);
37
38 line_x1 = x_center - x_dist;
39 line_x2 = x_center + x_dist;
40 line_y1 = y_center - y_dist;
41 line_y2 = y_center + y_dist;
42 }
43
line_screen_event_handler(GX_WINDOW * window,GX_EVENT * myevent)44 UINT line_screen_event_handler(GX_WINDOW *window, GX_EVENT *myevent)
45 {
46 UINT status = 0;
47
48 switch (myevent->gx_event_type)
49 {
50 case GX_SIGNAL(ID_LINE_WIDTH, GX_EVENT_SLIDER_VALUE):
51 line_width = myevent->gx_event_payload.gx_event_longdata;
52 gx_numeric_prompt_value_set(&line_screen.line_screen_line_width, line_width);
53 gx_system_dirty_mark(pLineWin);
54 break;
55
56 case GX_SIGNAL(ID_LINE_ANGLE, GX_EVENT_SLIDER_VALUE):
57 line_angle = myevent->gx_event_payload.gx_event_longdata;
58 gx_numeric_prompt_value_set(&line_screen.line_screen_line_angle, line_angle);
59 calculate_line_ends();
60 gx_system_dirty_mark(pLineWin);
61 break;
62
63 case GX_SIGNAL(ID_ROUNDED, GX_EVENT_TOGGLE_ON):
64 rounded = GX_TRUE;
65 gx_system_dirty_mark(pLineWin);
66 break;
67
68 case GX_SIGNAL(ID_ROUNDED, GX_EVENT_TOGGLE_OFF):
69 rounded = GX_FALSE;
70 gx_system_dirty_mark(pLineWin);
71 break;
72
73 case GX_SIGNAL(ID_PATTERN, GX_EVENT_TOGGLE_ON):
74 line_pattern = 0x0f0f0f0f;
75 gx_system_dirty_mark(pLineWin);
76 break;
77
78 case GX_SIGNAL(ID_PATTERN, GX_EVENT_TOGGLE_OFF):
79 line_pattern = 0;
80 gx_system_dirty_mark(pLineWin);
81 break;
82
83 case GX_SIGNAL(ID_ANTI_ALIASED_LINE, GX_EVENT_TOGGLE_ON):
84 anti_alised_line = GX_TRUE;
85 gx_system_dirty_mark(pLineWin);
86 break;
87
88 case GX_SIGNAL(ID_ANTI_ALIASED_LINE, GX_EVENT_TOGGLE_OFF):
89 anti_alised_line = GX_FALSE;
90 gx_system_dirty_mark(pLineWin);
91 break;
92
93 default:
94 status = gx_window_event_process(window, myevent);
95 break;
96 }
97 return status;
98 }
99
100
101
line_win_draw(GX_WINDOW * window)102 VOID line_win_draw(GX_WINDOW *window)
103 {
104 ULONG brush_style = 0;
105 GX_BRUSH *brush = GX_NULL;
106
107 gx_window_draw((GX_WINDOW*)window);
108
109
110 if (anti_alised_line)
111 {
112 brush_style |= GX_BRUSH_ALIAS;
113 }
114
115 if (rounded)
116 {
117 brush_style |= GX_BRUSH_ROUND;
118 gx_context_brush_define(GX_COLOR_ID_WHITE, window->gx_widget_normal_fill_color, brush_style);
119 }
120 else
121 {
122 /* Use different function to set brush color. But color value is same. */
123 gx_context_raw_brush_define(0xffffff, 0x9696ff, brush_style);
124 }
125
126 gx_context_brush_width_set(line_width);
127 gx_context_brush_get(&brush);
128 if (brush)
129 {
130 brush->gx_brush_line_pattern = line_pattern;
131 gx_context_brush_set(brush);
132 }
133 calculate_line_ends();
134 gx_canvas_line_draw(line_x1, line_y1, line_x2, line_y2);
135 }
136
