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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
#include<stdio.h>
#include<stdlib.h>
#include<stdbool.h>
#include<unistd.h>
#include<string.h>
#include<math.h>
#include<cairo/cairo.h>
#include<wayland-server.h>
#include<wayland-client.h>
#include<wayland-client-protocol.h>
#include"wlclock.h"
#include"surface.h"
#include"output.h"
#include"misc.h"
#include"colour.h"
#include"render.h"
#define PI 3.141592653589793238462643383279502884
static void rounded_rectangle (cairo_t *cairo, uint32_t x, uint32_t y, uint32_t w, uint32_t h,
double tl_r, double tr_r, double bl_r, double br_r)
{
double degrees = PI / 180.0;
cairo_new_sub_path(cairo);
cairo_arc(cairo, x + w - tr_r, y + tr_r, tr_r, -90 * degrees, 0 * degrees);
cairo_arc(cairo, x + w - br_r, y + h - br_r, br_r, 0 * degrees, 90 * degrees);
cairo_arc(cairo, x + bl_r, y + h - bl_r, bl_r, 90 * degrees, 180 * degrees);
cairo_arc(cairo, x + tl_r, y + tl_r, tl_r, 180 * degrees, 270 * degrees);
cairo_close_path(cairo);
}
static void draw_background (cairo_t *cairo, struct Wlclock_dimensions *dimensions,
int32_t scale, struct Wlclock *clock)
{
if ( colour_is_transparent(&clock->background_colour)
&& colour_is_transparent(&clock->border_colour) )
return;
int32_t w = scale * dimensions->w;
int32_t h = scale * dimensions->h;
int32_t center_x = scale * dimensions->center_x;
int32_t center_y = scale * dimensions->center_y;
int32_t center_size = scale * dimensions->center_size;
int32_t radius_top_left = scale * clock->radius_top_left;
int32_t radius_top_right = scale * clock->radius_top_right;
int32_t radius_bottom_left = scale * clock->radius_bottom_left;
int32_t radius_bottom_right = scale * clock->radius_bottom_right;
/* Avoid too radii so big that they cause unexpected drawing behaviour. */
if ( radius_top_left > center_size / 2 )
radius_top_left = center_size / 2;
if ( radius_top_right > center_size / 2 )
radius_top_right = center_size / 2;
if ( radius_bottom_left > center_size / 2 )
radius_bottom_left = center_size / 2;
if ( radius_bottom_right > center_size / 2 )
radius_bottom_right = center_size / 2;
clocklog(clock, 2, "[render] Render dimensions: size=%d cx=%d cy=%d w=%d h=%d\n",
center_size, center_x, center_y, w, h);
cairo_save(cairo);
cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
if ( radius_top_left == 0 && radius_top_right == 0
&& radius_bottom_left == 0 && radius_bottom_right == 0 )
{
if ( center_x == 0 && center_y == 0 && center_size == w && center_size == h )
{
cairo_rectangle(cairo, 0, 0, w, h);
colour_set_cairo_source(cairo, &clock->background_colour);
cairo_fill(cairo);
}
else
{
cairo_rectangle(cairo, 0, 0, w, h);
colour_set_cairo_source(cairo, &clock->border_colour);
cairo_fill(cairo);
cairo_rectangle(cairo, center_x, center_y, center_size, center_size);
colour_set_cairo_source(cairo, &clock->background_colour);
cairo_fill(cairo);
}
}
else
{
if ( center_x == 0 && center_y == 0 && center_size == w && center_size == h )
{
rounded_rectangle(cairo, 0, 0, w, h,
radius_top_left, radius_top_right,
radius_bottom_left, radius_bottom_right);
colour_set_cairo_source(cairo, &clock->background_colour);
cairo_fill(cairo);
}
else
{
rounded_rectangle(cairo, 0, 0, w, h,
radius_top_left, radius_top_right,
radius_bottom_left, radius_bottom_right);
colour_set_cairo_source(cairo, &clock->border_colour);
cairo_fill(cairo);
rounded_rectangle(cairo, center_x, center_y, center_size, center_size,
radius_top_left, radius_top_right,
radius_bottom_left, radius_bottom_right);
colour_set_cairo_source(cairo, &clock->background_colour);
cairo_fill(cairo);
}
}
cairo_restore(cairo);
}
static void draw_clock_face (cairo_t *cairo, struct Wlclock_dimensions *dimensions,
int32_t scale, struct Wlclock *clock)
{
double cx = scale * (dimensions->center_x + (dimensions->center_size / 2));
double cy = scale * (dimensions->center_y + (dimensions->center_size / 2));
double or = scale * 0.9 * dimensions->center_size / 2;
double ir = scale * 0.85 * dimensions->center_size / 2;
double bir = scale * 0.8 * dimensions->center_size / 2;
double phi;
double phi_step = 2 * PI / 60;
cairo_save(cairo);
for (int i = 0; i < 60; i++)
{
phi = i * phi_step;
cairo_move_to(cairo, cx + or * cos(phi), cy + or * sin(phi));
if ( i % 5 == 0 )
cairo_line_to(cairo, cx + bir * cos(phi), cy + bir * sin(phi));
else
cairo_line_to(cairo, cx + ir * cos(phi), cy + ir * sin(phi));
}
cairo_set_line_width(cairo, 1 * scale);
colour_set_cairo_source(cairo, &clock->clock_colour);
cairo_stroke(cairo);
cairo_restore(cairo);
}
static void clear_buffer (cairo_t *cairo)
{
cairo_save(cairo);
cairo_set_operator(cairo, CAIRO_OPERATOR_CLEAR);
cairo_paint(cairo);
cairo_restore(cairo);
}
void render_surface_frame (struct Wlclock_surface *surface)
{
struct Wlclock_output *output = surface->output;
struct Wlclock *clock = output->clock;
uint32_t scale = output->scale;
clocklog(clock, 2, "[render] Render frame: global_name=%d\n", output->global_name);
/* Get new/next buffer. */
if (! next_buffer(&surface->current_buffer, clock->shm, surface->buffers,
surface->dimensions.w * scale,
surface->dimensions.h * scale))
return;
cairo_t *cairo = surface->current_buffer->cairo;
clear_buffer(cairo);
draw_background(cairo, &surface->dimensions, scale, clock);
draw_clock_face(cairo, &surface->dimensions, scale, clock);
// TODO draw clock hands to subsurface
wl_surface_set_buffer_scale(surface->surface, scale);
wl_surface_attach(surface->surface, surface->current_buffer->buffer, 0, 0);
wl_surface_damage_buffer(surface->surface, 0, 0, INT32_MAX, INT32_MAX);
}
|
