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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
#include "fitz.h"
#define QUANT(x,a) (((int)((x) * (a))) / (a))
#define HSUBPIX 5.0
#define VSUBPIX 5.0
typedef struct fz_drawdevice_s fz_drawdevice;
struct fz_drawdevice_s
{
int maskonly;
fz_colorspace *model;
fz_glyphcache *cache;
fz_gel *gel;
fz_ael *ael;
fz_pixmap *dest;
};
void fz_drawfillpath(void *user, fz_path *path, fz_colorspace *colorspace, float *color, float alpha)
{
fz_drawdevice *dev = user;
float expansion = fz_matrixexpansion(path->ctm);
float flatness = 0.3 / expansion;
fz_irect bbox;
fz_irect clip;
unsigned char argb[7];
float rgb[3];
if (flatness < 0.1)
flatness = 0.1;
fz_convertcolor(colorspace, color, dev->model, rgb);
argb[0] = alpha * 255;
argb[1] = rgb[0] * alpha * 255;
argb[2] = rgb[1] * alpha * 255;
argb[3] = rgb[2] * alpha * 255;
argb[4] = rgb[0] * 255;
argb[5] = rgb[1] * 255;
argb[6] = rgb[2] * 255;
clip.x0 = dev->dest->x;
clip.y0 = dev->dest->y;
clip.x1 = dev->dest->x + dev->dest->w;
clip.y1 = dev->dest->y + dev->dest->h;
fz_resetgel(dev->gel, clip);
fz_fillpath(dev->gel, path, path->ctm, flatness);
fz_sortgel(dev->gel);
bbox = fz_boundgel(dev->gel);
bbox = fz_intersectirects(bbox, clip);
if (fz_isemptyrect(bbox))
return;
fz_scanconvert(dev->gel, dev->ael, path->winding == FZ_EVENODD, bbox, dev->dest, argb, 1);
}
void fz_drawstrokepath(void *user, fz_path *path, fz_colorspace *colorspace, float *color, float alpha)
{
fz_drawdevice *dev = user;
float expansion = fz_matrixexpansion(path->ctm);
float flatness = 0.3 / expansion;
float linewidth = path->linewidth;
fz_irect bbox;
fz_irect clip;
unsigned char argb[7];
float rgb[3];
if (flatness < 0.1)
flatness = 0.1;
if (linewidth < 0.1)
linewidth = 1.0 / expansion;
fz_convertcolor(colorspace, color, dev->model, rgb);
argb[0] = alpha * 255;
argb[1] = rgb[0] * alpha * 255;
argb[2] = rgb[1] * alpha * 255;
argb[3] = rgb[2] * alpha * 255;
argb[4] = rgb[0] * 255;
argb[5] = rgb[1] * 255;
argb[6] = rgb[2] * 255;
clip.x0 = dev->dest->x;
clip.y0 = dev->dest->y;
clip.x1 = dev->dest->x + dev->dest->w;
clip.y1 = dev->dest->y + dev->dest->h;
fz_resetgel(dev->gel, clip);
if (path->dashlen > 0)
fz_dashpath(dev->gel, path, path->ctm, flatness, linewidth);
else
fz_strokepath(dev->gel, path, path->ctm, flatness, linewidth);
fz_sortgel(dev->gel);
bbox = fz_boundgel(dev->gel);
bbox = fz_intersectirects(bbox, clip);
if (fz_isemptyrect(bbox))
return;
fz_scanconvert(dev->gel, dev->ael, 0, bbox, dev->dest, argb, 1);
}
void fz_drawclippath(void *user, fz_path *path)
{
fz_drawdevice *dev = user;
fz_printpath(path, 0);
printf("clippath\n");
}
static void drawglyph(unsigned char *argb, fz_pixmap *dst, fz_glyph *src, int xorig, int yorig)
{
unsigned char *dp, *sp;
int w, h;
int dx0 = dst->x;
int dy0 = dst->y;
int dx1 = dst->x + dst->w;
int dy1 = dst->y + dst->h;
int x0 = xorig + src->x;
int y0 = yorig + src->y;
int x1 = x0 + src->w;
int y1 = y0 + src->h;
int sx0 = 0;
int sy0 = 0;
int sx1 = src->w;
int sy1 = src->h;
if (x1 <= dx0 || x0 >= dx1) return;
if (y1 <= dy0 || y0 >= dy1) return;
if (x0 < dx0) { sx0 += dx0 - x0; x0 = dx0; }
if (y0 < dy0) { sy0 += dy0 - y0; y0 = dy0; }
if (x1 > dx1) { sx1 += dx1 - x1; x1 = dx1; }
if (y1 > dy1) { sy1 += dy1 - y1; y1 = dy1; }
sp = src->samples + (sy0 * src->w + sx0);
dp = dst->samples + ((y0 - dst->y) * dst->w + (x0 - dst->x)) * dst->n;
w = sx1 - sx0;
h = sy1 - sy0;
fz_text_w4i1o4(argb, sp, src->w, dp, dst->w * 4, w, h);
}
void fz_drawfilltext(void *user, fz_text *text, fz_colorspace *colorspace, float *color, float alpha)
{
fz_drawdevice *dev = user;
unsigned char argb[7];
float rgb[3];
fz_irect clip;
fz_matrix tm, trm;
fz_glyph glyph;
int i, x, y, gid;
fz_convertcolor(colorspace, color, dev->model, rgb);
argb[0] = alpha * 255;
argb[1] = rgb[0] * alpha * 255;
argb[2] = rgb[1] * alpha * 255;
argb[3] = rgb[2] * alpha * 255;
argb[4] = rgb[0] * 255;
argb[5] = rgb[1] * 255;
argb[6] = rgb[2] * 255;
clip.x0 = dev->dest->x;
clip.y0 = dev->dest->y;
clip.x1 = dev->dest->x + dev->dest->w;
clip.y1 = dev->dest->y + dev->dest->h;
tm = text->trm;
for (i = 0; i < text->len; i++)
{
gid = text->els[i].gid;
tm.e = text->els[i].x;
tm.f = text->els[i].y;
trm = fz_concat(tm, text->ctm);
x = fz_floor(trm.e);
y = fz_floor(trm.f);
trm.e = QUANT(trm.e - fz_floor(trm.e), HSUBPIX);
trm.f = QUANT(trm.f - fz_floor(trm.f), VSUBPIX);
fz_renderglyph(dev->cache, &glyph, text->font, gid, trm);
drawglyph(argb, dev->dest, &glyph, x, y);
}
}
void fz_drawstroketext(void *user, fz_text *text, fz_colorspace *colorspace, float *color, float alpha)
{
printf("/%s setfont\n", text->font->name);
fz_debugtext(text, 0);
printf("charpath stroke\n");
}
void fz_drawcliptext(void *user, fz_text *text)
{
printf("gsave\n");
printf("/%s setfont\n", text->font->name);
fz_debugtext(text, 0);
printf("charpath clip\n");
}
void fz_drawignoretext(void *user, fz_text *text)
{
printf("/%s setfont\n", text->font->name);
fz_debugtext(text, 0);
printf("invisibletext\n");
}
void fz_drawdrawimage(void *user, fz_image *image, fz_matrix *ctm)
{
printf("drawimage\n");
}
void fz_drawdrawshade(void *user, fz_shade *shade, fz_matrix *ctm)
{
printf("drawshade\n");
}
void fz_drawpopclip(void *user)
{
printf("grestore\n");
}
fz_device *fz_newdrawdevice(fz_colorspace *colorspace, fz_pixmap *dest)
{
fz_drawdevice *ddev = fz_malloc(sizeof(fz_drawdevice));
ddev->model = fz_keepcolorspace(colorspace);
ddev->cache = fz_newglyphcache(512, 512 * 512);
ddev->gel = fz_newgel();
ddev->ael = fz_newael();
ddev->dest = dest;
fz_device *dev = fz_malloc(sizeof(fz_device));
dev->user = ddev;
dev->fillpath = fz_drawfillpath;
dev->strokepath = fz_drawstrokepath;
dev->clippath = fz_drawclippath;
dev->filltext = fz_drawfilltext;
dev->stroketext = fz_drawstroketext;
dev->cliptext = fz_drawcliptext;
dev->ignoretext = fz_drawignoretext;
dev->drawimage = fz_drawdrawimage;
dev->drawshade = fz_drawdrawshade;
dev->popclip = fz_drawpopclip;
return dev;
}
void
fz_freedrawdevice(void *user)
{
fz_drawdevice *dev = user;
fz_dropcolorspace(dev->model);
fz_freeglyphcache(dev->cache);
fz_freegel(dev->gel);
fz_freeael(dev->ael);
fz_free(dev);
}
|
