aboutsummaryrefslogtreecommitdiffstats
path: root/swaylock/render.c
diff options
context:
space:
mode:
Diffstat (limited to 'swaylock/render.c')
-rw-r--r--swaylock/render.c150
1 files changed, 150 insertions, 0 deletions
diff --git a/swaylock/render.c b/swaylock/render.c
new file mode 100644
index 00000000..cd387be5
--- /dev/null
+++ b/swaylock/render.c
@@ -0,0 +1,150 @@
1#define _POSIX_C_SOURCE 199506L
2#include <math.h>
3#include <stdlib.h>
4#include <wayland-client.h>
5#include "cairo.h"
6#include "background-image.h"
7#include "swaylock/swaylock.h"
8
9#define M_PI 3.14159265358979323846
10const int ARC_RADIUS = 50;
11const int ARC_THICKNESS = 10;
12const float TYPE_INDICATOR_RANGE = M_PI / 3.0f;
13const float TYPE_INDICATOR_BORDER_THICKNESS = M_PI / 128.0f;
14
15void render_frame(struct swaylock_surface *surface) {
16 struct swaylock_state *state = surface->state;
17
18 int buffer_width = surface->width * surface->scale;
19 int buffer_height = surface->height * surface->scale;
20
21 surface->current_buffer = get_next_buffer(state->shm,
22 surface->buffers, buffer_width, buffer_height);
23 cairo_t *cairo = surface->current_buffer->cairo;
24 cairo_identity_matrix(cairo);
25
26 if (state->args.mode == BACKGROUND_MODE_SOLID_COLOR) {
27 cairo_set_source_u32(cairo, state->args.color);
28 cairo_paint(cairo);
29 } else {
30 render_background_image(cairo, surface->image,
31 state->args.mode, buffer_width, buffer_height);
32 }
33 cairo_identity_matrix(cairo);
34
35 int arc_radius = ARC_RADIUS * surface->scale;
36 int arc_thickness = ARC_THICKNESS * surface->scale;
37 float type_indicator_border_thickness =
38 TYPE_INDICATOR_BORDER_THICKNESS * surface->scale;
39
40 if (state->args.show_indicator && state->auth_state != AUTH_STATE_IDLE) {
41 // Draw circle
42 cairo_set_line_width(cairo, arc_thickness);
43 cairo_arc(cairo, buffer_width / 2, buffer_height / 2, arc_radius, 0, 2 * M_PI);
44 switch (state->auth_state) {
45 case AUTH_STATE_INPUT:
46 case AUTH_STATE_BACKSPACE: {
47 cairo_set_source_rgba(cairo, 0, 0, 0, 0.75);
48 cairo_fill_preserve(cairo);
49 cairo_set_source_rgb(cairo, 51.0 / 255, 125.0 / 255, 0);
50 cairo_stroke(cairo);
51 } break;
52 case AUTH_STATE_VALIDATING: {
53 cairo_set_source_rgba(cairo, 0, 114.0 / 255, 255.0 / 255, 0.75);
54 cairo_fill_preserve(cairo);
55 cairo_set_source_rgb(cairo, 51.0 / 255, 0, 250.0 / 255);
56 cairo_stroke(cairo);
57 } break;
58 case AUTH_STATE_INVALID: {
59 cairo_set_source_rgba(cairo, 250.0 / 255, 0, 0, 0.75);
60 cairo_fill_preserve(cairo);
61 cairo_set_source_rgb(cairo, 125.0 / 255, 51.0 / 255, 0);
62 cairo_stroke(cairo);
63 } break;
64 default: break;
65 }
66
67 // Draw a message
68 char *text = NULL;
69 cairo_set_source_rgb(cairo, 0, 0, 0);
70 cairo_select_font_face(cairo, "sans-serif",
71 CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
72 cairo_set_font_size(cairo, arc_radius / 3.0f);
73 switch (state->auth_state) {
74 case AUTH_STATE_VALIDATING:
75 text = "verifying";
76 break;
77 case AUTH_STATE_INVALID:
78 text = "wrong";
79 break;
80 default: break;
81 }
82
83 if (text) {
84 cairo_text_extents_t extents;
85 double x, y;
86 cairo_text_extents(cairo, text, &extents);
87 x = (buffer_width / 2) -
88 (extents.width / 2 + extents.x_bearing);
89 y = (buffer_height / 2) -
90 (extents.height / 2 + extents.y_bearing);
91
92 cairo_move_to(cairo, x, y);
93 cairo_show_text(cairo, text);
94 cairo_close_path(cairo);
95 cairo_new_sub_path(cairo);
96 }
97
98 // Typing indicator: Highlight random part on keypress
99 if (state->auth_state == AUTH_STATE_INPUT
100 || state->auth_state == AUTH_STATE_BACKSPACE) {
101 static double highlight_start = 0;
102 highlight_start +=
103 (rand() % (int)(M_PI * 100)) / 100.0 + M_PI * 0.5;
104 cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
105 arc_radius, highlight_start,
106 highlight_start + TYPE_INDICATOR_RANGE);
107 if (state->auth_state == AUTH_STATE_INPUT) {
108 cairo_set_source_rgb(cairo, 51.0 / 255, 219.0 / 255, 0);
109 } else {
110 cairo_set_source_rgb(cairo, 219.0 / 255, 51.0 / 255, 0);
111 }
112 cairo_stroke(cairo);
113
114 // Draw borders
115 cairo_set_source_rgb(cairo, 0, 0, 0);
116 cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
117 arc_radius, highlight_start,
118 highlight_start + type_indicator_border_thickness);
119 cairo_stroke(cairo);
120
121 cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
122 arc_radius, highlight_start + TYPE_INDICATOR_RANGE,
123 highlight_start + TYPE_INDICATOR_RANGE +
124 type_indicator_border_thickness);
125 cairo_stroke(cairo);
126 }
127
128 // Draw inner + outer border of the circle
129 cairo_set_source_rgb(cairo, 0, 0, 0);
130 cairo_set_line_width(cairo, 2.0 * surface->scale);
131 cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
132 arc_radius - arc_thickness / 2, 0, 2 * M_PI);
133 cairo_stroke(cairo);
134 cairo_arc(cairo, buffer_width / 2, buffer_height / 2,
135 arc_radius + arc_thickness / 2, 0, 2 * M_PI);
136 cairo_stroke(cairo);
137 }
138
139 wl_surface_set_buffer_scale(surface->surface, surface->scale);
140 wl_surface_attach(surface->surface, surface->current_buffer->buffer, 0, 0);
141 wl_surface_damage(surface->surface, 0, 0, surface->width, surface->height);
142 wl_surface_commit(surface->surface);
143}
144
145void render_frames(struct swaylock_state *state) {
146 struct swaylock_surface *surface;
147 wl_list_for_each(surface, &state->surfaces, link) {
148 render_frame(surface);
149 }
150}
generated by cgit v1.2.3-54-g00ecf (git 2.45.1) at 2024-05-31 23:06:06 +0000