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
|
/* vim: set ts=8 sw=8 noexpandtab: */
#include <stdlib.h>
#include <string.h>
#include <cairo.h>
#include <ccss-cairo/ccss-cairo.h>
#include <gtk/gtk.h>
#include "config.h"
typedef struct {
ccss_property_t base;
char const *font_family; /* Owned by the stylesheet. */
} font_family_t;
static ccss_property_t *
font_family_new (ccss_grammar_t *grammar,
CRTerm const *values,
void *user_data)
{
font_family_t *self;
g_return_val_if_fail (values, NULL);
self = NULL;
switch (values->type) {
case TERM_IDENT:
case TERM_STRING:
self = g_new0 (font_family_t, 1);
self->font_family = cr_string_peek_raw_str (values->content.str);
break;
default:
/* Unhandled, fall thru. */
;
}
return (ccss_property_t *) self;
}
static gboolean
expose_cb (GtkWidget *widget,
GdkEventExpose *event,
ccss_style_t const *style)
{
cairo_t *cr;
font_family_t *property;
cr = gdk_cairo_create (widget->window);
property = NULL;
ccss_style_interpret_property (style, "font-family",
(ccss_property_create_f) font_family_new,
NULL,
(ccss_property_t **) &property);
if (property) {
PangoContext *context;
PangoLayout *layout;
context = gtk_widget_get_pango_context (widget);
layout = pango_layout_new (context);
pango_layout_set_text (layout, property->font_family,
strlen (property->font_family));
pango_cairo_show_layout (cr, layout);
g_object_unref (G_OBJECT (layout)), layout = NULL;
g_free (property);
}
cairo_destroy (cr);
return FALSE;
}
static char const _css[] = " \
box { \
font-family: Helvetica; \
} \
";
int
main (int argc,
char **argv)
{
ccss_grammar_t *grammar;
ccss_stylesheet_t *stylesheet;
ccss_style_t *style;
GtkWidget *window;
gtk_init (&argc, &argv);
grammar = ccss_cairo_grammar_create ();
stylesheet = ccss_grammar_create_stylesheet_from_buffer (grammar,
_css, sizeof (_css),
NULL);
style = ccss_stylesheet_query_type (stylesheet, "box");
g_assert (style);
#ifdef CCSS_DEBUG
ccss_style_dump (style);
#endif
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 160, 90);
gtk_widget_set_app_paintable (window, TRUE);
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (gtk_main_quit), NULL);
g_signal_connect (G_OBJECT (window), "expose-event",
G_CALLBACK (expose_cb), style);
gtk_widget_show_all (window);
gtk_main ();
ccss_style_destroy (style);
ccss_stylesheet_destroy (stylesheet);
ccss_grammar_destroy (grammar);
return EXIT_SUCCESS;
}
|
