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
|
#include <arpa/inet.h>
#include <cairo/cairo.h>
#include <glib.h>
#include <pango/pangocairo.h>
#include <pango/pango.h>
#include <wchar.h>
#include "entry.h"
#include "log.h"
#include "nelem.h"
void entry_init(struct entry *entry, uint32_t width, uint32_t height, uint32_t scale)
{
entry->image.width = width;
entry->image.height = height;
width /= scale;
height /= scale;
/*
* Cairo uses native 32 bit integers for pixels, so if this processor
* is little endian we have to tell OpenGL to swizzle the texture.
*/
if (htonl(0xFFu) != 0xFFu) {
entry->image.swizzle = true;
}
/*
* Create the cairo surface and context we'll be using.
*/
cairo_surface_t *surface = cairo_image_surface_create(
CAIRO_FORMAT_ARGB32,
width * scale,
height * scale
);
cairo_surface_set_device_scale(surface, scale, scale);
cairo_t *cr = cairo_create(surface);
/* Draw the outer outline */
struct color color = entry->border.outline_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within this outline */
cairo_translate(
cr,
entry->border.outline_width,
entry->border.outline_width);
width -= 2 * entry->border.outline_width;
height -= 2 * entry->border.outline_width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the border */
color = entry->border.color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within the border */
cairo_translate(cr, entry->border.width, entry->border.width);
width -= 2 * entry->border.width;
height -= 2 * entry->border.width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the inner outline */
color = entry->border.outline_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within this outline */
cairo_translate(
cr,
entry->border.outline_width,
entry->border.outline_width);
width -= 2 * entry->border.outline_width;
height -= 2 * entry->border.outline_width;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Draw the entry background */
color = entry->background_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Move and clip following draws to be within the specified padding */
cairo_translate(cr, entry->padding, entry->padding);
width -= 2 * entry->padding;
height -= 2 * entry->padding;
cairo_rectangle(cr, 0, 0, width, height);
cairo_clip(cr);
/* Setup Pango. */
PangoContext *context = pango_cairo_create_context(cr);
PangoFontDescription *font_description =
pango_font_description_from_string(entry->font_name);
pango_font_description_set_size(
font_description,
entry->font_size * PANGO_SCALE);
pango_context_set_font_description(context, font_description);
pango_font_description_free(font_description);
entry->pango.entry_layout = pango_layout_new(context);
pango_layout_set_text(entry->pango.entry_layout, "", -1);
for (size_t i = 0; i < 5; i++) {
PangoLayout *layout = pango_layout_new(context);
pango_layout_set_text(layout, "", -1);
entry->pango.result_layouts[i] = layout;
}
entry->pango.context = context;
entry->cairo.surface = surface;
entry->cairo.cr = cr;
entry->image.buffer = cairo_image_surface_get_data(surface);
}
void entry_destroy(struct entry *entry)
{
for (size_t i = 0; i < 5; i++) {
g_object_unref(entry->pango.result_layouts[i]);
}
g_object_unref(entry->pango.entry_layout);
g_object_unref(entry->pango.context);
cairo_destroy(entry->cairo.cr);
cairo_surface_destroy(entry->cairo.surface);
}
void entry_update(struct entry *entry)
{
cairo_t *cr = entry->cairo.cr;
cairo_save(cr);
entry->image.redraw = true;
/* Clear the image. */
struct color color = entry->background_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
cairo_paint(cr);
/* Draw our text. */
color = entry->foreground_color;
cairo_set_source_rgba(cr, color.r, color.g, color.b, color.a);
pango_layout_set_text(entry->pango.entry_layout, entry->input_mb, -1);
pango_cairo_update_layout(cr, entry->pango.entry_layout);
pango_cairo_show_layout(cr, entry->pango.entry_layout);
for (size_t i = 0; i < 5; i++) {
cairo_translate(cr, 0, 50);
PangoLayout *layout = entry->pango.result_layouts[i];
const char *str;
if (i < entry->results.count) {
str = entry->results.buf[i];
} else {
str = "";
}
pango_layout_set_text(layout, str, -1);
pango_cairo_update_layout(cr, layout);
pango_cairo_show_layout(cr, layout);
}
cairo_restore(cr);
}
void entry_set_scale(struct entry *entry, uint32_t scale)
{
cairo_surface_set_device_scale(entry->cairo.surface, scale, scale);
}
|
