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
|
#include "mupdf/fitz-internal.h"
fz_text *
fz_new_text(fz_context *ctx, fz_font *font, const fz_matrix *trm, int wmode)
{
fz_text *text;
text = fz_malloc_struct(ctx, fz_text);
text->font = fz_keep_font(ctx, font);
text->trm = *trm;
text->wmode = wmode;
text->len = 0;
text->cap = 0;
text->items = NULL;
return text;
}
void
fz_free_text(fz_context *ctx, fz_text *text)
{
if (text != NULL)
{
fz_drop_font(ctx, text->font);
fz_free(ctx, text->items);
}
fz_free(ctx, text);
}
fz_text *
fz_clone_text(fz_context *ctx, fz_text *old)
{
fz_text *text;
text = fz_malloc_struct(ctx, fz_text);
text->len = old->len;
fz_try(ctx)
{
text->items = fz_malloc_array(ctx, text->len, sizeof(fz_text_item));
}
fz_catch(ctx)
{
fz_free(ctx, text);
fz_rethrow(ctx);
}
memcpy(text->items, old->items, text->len * sizeof(fz_text_item));
text->font = fz_keep_font(ctx, old->font);
text->trm = old->trm;
text->wmode = old->wmode;
text->cap = text->len;
return text;
}
fz_rect *
fz_bound_text(fz_context *ctx, fz_text *text, const fz_stroke_state *stroke, const fz_matrix *ctm, fz_rect *bbox)
{
fz_matrix tm, trm;
fz_rect gbox;
int i;
if (text->len == 0)
{
*bbox = fz_empty_rect;
return bbox;
}
// TODO: stroke state
tm = text->trm;
tm.e = text->items[0].x;
tm.f = text->items[0].y;
fz_concat(&trm, &tm, ctm);
fz_bound_glyph(ctx, text->font, text->items[0].gid, &trm, bbox);
for (i = 1; i < text->len; i++)
{
if (text->items[i].gid >= 0)
{
tm.e = text->items[i].x;
tm.f = text->items[i].y;
fz_concat(&trm, &tm, ctm);
fz_bound_glyph(ctx, text->font, text->items[i].gid, &trm, &gbox);
bbox->x0 = fz_min(bbox->x0, gbox.x0);
bbox->y0 = fz_min(bbox->y0, gbox.y0);
bbox->x1 = fz_max(bbox->x1, gbox.x1);
bbox->y1 = fz_max(bbox->y1, gbox.y1);
}
}
if (stroke)
fz_adjust_rect_for_stroke(bbox, stroke, ctm);
/* Compensate for the glyph cache limited positioning precision */
bbox->x0 -= 1;
bbox->y0 -= 1;
bbox->x1 += 1;
bbox->y1 += 1;
return bbox;
}
static void
fz_grow_text(fz_context *ctx, fz_text *text, int n)
{
int new_cap = text->cap;
if (text->len + n < new_cap)
return;
while (text->len + n > new_cap)
new_cap = new_cap + 36;
text->items = fz_resize_array(ctx, text->items, new_cap, sizeof(fz_text_item));
text->cap = new_cap;
}
void
fz_add_text(fz_context *ctx, fz_text *text, int gid, int ucs, float x, float y)
{
fz_grow_text(ctx, text, 1);
text->items[text->len].ucs = ucs;
text->items[text->len].gid = gid;
text->items[text->len].x = x;
text->items[text->len].y = y;
text->len++;
}
static int
isxmlmeta(int c)
{
return c < 32 || c >= 128 || c == '&' || c == '<' || c == '>' || c == '\'' || c == '"';
}
static void
do_print_text(FILE *out, fz_text *text, int indent)
{
int i, n;
for (i = 0; i < text->len; i++)
{
for (n = 0; n < indent; n++)
fputc(' ', out);
if (!isxmlmeta(text->items[i].ucs))
fprintf(out, "<g ucs=\"%c\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n",
text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y);
else
fprintf(out, "<g ucs=\"U+%04X\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n",
text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y);
}
}
void fz_print_text(fz_context *ctx, FILE *out, fz_text *text)
{
do_print_text(out, text, 0);
}
|
