1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
#include "draw.h"
#include <string.h>
#define place_pixel(_p, _w, _h) \
{ *(uint32_t *)(disp->back_buffer + BPP * (_w) + (WIDTH * BPP * (_h))) = _p; }
#define place_pixel_pos(_p, _pos) \
{ *(uint32_t *)(disp->back_buffer + BPP * (_pos)) = _p; }
int mx;
int my;
void update_display(DISPLAY *disp) {
for (int i = 0; i < 20; i++) {
place_pixel(0xFFFFFFFF, mx + i, my + i);
place_pixel(0xFFFFFFFF, mx, my + i / 2);
place_pixel(0xFFFFFFFF, mx + i / 2, my);
}
uint32_t *dst = disp->true_buffer;
uint32_t *src = disp->back_buffer;
for (int i = 0; i < disp->size / BPP; i++) {
*dst = *src;
dst++;
src++;
}
}
void draw_wallpaper(DISPLAY *disp) {
uint32_t *dst = disp->back_buffer;
uint32_t *src = disp->wallpaper_buffer;
for (int i = 0; i < disp->size / BPP; i++) {
*dst = *src;
dst++;
src++;
}
}
void draw_mouse(DISPLAY *disp, int mouse_x, int mouse_y) {
mx = mouse_x;
my = mouse_y;
update_full_display(disp, mouse_x, mouse_y);
}
void draw_line(DISPLAY *disp, int sx, int sy, int dx, int dy, uint32_t color) {
int x = sx;
int y = sy;
for (;;) {
// Bounds checking
if (y * WIDTH + x > HEIGHT * WIDTH)
break;
if (x >= dx - 1 && y >= dy - 1)
break;
uint32_t *ptr = disp->back_buffer + (BPP * y * WIDTH) + (x * BPP);
*ptr = color;
if (x < dx - 1)
x++;
if (y < dy - 1)
y++;
}
}
void draw_window(DISPLAY *disp, const WINDOW *w) {
int x, y;
uint8_t border_size = disp->border_size;
const int px = w->x + border_size;
const int py = w->y;
const int sx = w->sx;
const int sy = w->sy;
x = px;
y = py;
// Draw a border around the current selected window
if (w == disp->active_window) {
// Top
draw_line(disp, px - 1, py - 1, px + sx + 1, py - 1, 0xFF00FF);
// Bottom
draw_line(disp, px - 1, py + sy, px + sx + 1, py + sy, 0xFF00FF);
// Left
draw_line(disp, px - 1, py - 1, px - 1, py + sy + 1, 0xFF00FF);
// Right
draw_line(disp, px + sx, py - 1, px + sx, py + sy + 1, 0xFF00FF);
}
for (int i = 0; i < sy; i++) {
if ((i + py) * WIDTH + px > HEIGHT * WIDTH)
break;
uint32_t *ptr = disp->back_buffer + BPP * ((i + py) * WIDTH) + px * BPP;
if (i * sx > HEIGHT * WIDTH)
break;
uint32_t *bm = &w->bitmap_ptr[i * sx];
for (int j = 0; j < sx; j++) {
ptr[j] = bm[j];
}
}
}
void update_active_window(DISPLAY *disp) {
for (int i = 0; i < 100; i++) {
if (!disp->windows[i])
continue;
if (!disp->windows[i]->bitmap_ptr)
continue;
draw_window(disp, disp->windows[i]);
}
}
void update_full_display(DISPLAY *disp, int mouse_x, int mouse_y) {
draw_wallpaper(disp);
update_active_window(disp);
update_display(disp);
}
|
