File: | xftextent.c |
Location: | line 50, column 6 |
Description: | Function call argument is an uninitialized value |
1 | /* | |||
2 | * Copyright © 2000 Keith Packard | |||
3 | * | |||
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |||
5 | * documentation for any purpose is hereby granted without fee, provided that | |||
6 | * the above copyright notice appear in all copies and that both that | |||
7 | * copyright notice and this permission notice appear in supporting | |||
8 | * documentation, and that the name of Keith Packard not be used in | |||
9 | * advertising or publicity pertaining to distribution of the software without | |||
10 | * specific, written prior permission. Keith Packard makes no | |||
11 | * representations about the suitability of this software for any purpose. It | |||
12 | * is provided "as is" without express or implied warranty. | |||
13 | * | |||
14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |||
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |||
16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |||
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |||
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |||
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |||
20 | * PERFORMANCE OF THIS SOFTWARE. | |||
21 | */ | |||
22 | ||||
23 | #include "xftint.h" | |||
24 | ||||
25 | _X_EXPORT__attribute__((visibility("default"))) void | |||
26 | XftGlyphExtents (Display *dpy, | |||
27 | XftFont *pub, | |||
28 | _Xconstconst FT_UInt *glyphs, | |||
29 | int nglyphs, | |||
30 | XGlyphInfo *extents) | |||
31 | { | |||
32 | XftFontInt *font = (XftFontInt *) pub; | |||
33 | FT_UInt missing[XFT_NMISSING256]; | |||
34 | int nmissing; | |||
35 | int n; | |||
36 | _Xconstconst FT_UInt *g; | |||
37 | FT_UInt glyph; | |||
38 | XftGlyph *xftg; | |||
39 | FcBool glyphs_loaded; | |||
40 | int x, y; | |||
41 | int left, right, top, bottom; | |||
42 | int overall_left, overall_right; | |||
43 | int overall_top, overall_bottom; | |||
44 | ||||
45 | g = glyphs; | |||
46 | n = nglyphs; | |||
47 | nmissing = 0; | |||
48 | glyphs_loaded = FcFalse0; | |||
49 | while (n--) | |||
50 | if (XftFontCheckGlyph (dpy, pub, FcFalse0, *g++, missing, &nmissing)) | |||
| ||||
51 | glyphs_loaded = FcTrue1; | |||
52 | if (nmissing) | |||
53 | XftFontLoadGlyphs (dpy, pub, FcFalse0, missing, nmissing); | |||
54 | g = glyphs; | |||
55 | n = nglyphs; | |||
56 | xftg = NULL((void*)0); | |||
57 | while (n) | |||
58 | { | |||
59 | glyph = *g++; | |||
60 | n--; | |||
61 | if (glyph < font->num_glyphs && | |||
62 | (xftg = font->glyphs[glyph])) | |||
63 | break; | |||
64 | } | |||
65 | if (n == 0) | |||
66 | { | |||
67 | if (xftg) | |||
68 | *extents = xftg->metrics; | |||
69 | else | |||
70 | memset (extents, '\0', sizeof (*extents))__builtin___memset_chk (extents, '\0', sizeof (*extents), __builtin_object_size (extents, 0)); | |||
71 | } | |||
72 | else | |||
73 | { | |||
74 | x = 0; | |||
75 | y = 0; | |||
76 | overall_left = x - xftg->metrics.x; | |||
77 | overall_top = y - xftg->metrics.y; | |||
78 | overall_right = overall_left + (int) xftg->metrics.width; | |||
79 | overall_bottom = overall_top + (int) xftg->metrics.height; | |||
80 | x += xftg->metrics.xOff; | |||
81 | y += xftg->metrics.yOff; | |||
82 | while (n--) | |||
83 | { | |||
84 | glyph = *g++; | |||
85 | if (glyph < font->num_glyphs && (xftg = font->glyphs[glyph])) | |||
86 | { | |||
87 | left = x - xftg->metrics.x; | |||
88 | top = y - xftg->metrics.y; | |||
89 | right = left + (int) xftg->metrics.width; | |||
90 | bottom = top + (int) xftg->metrics.height; | |||
91 | if (left < overall_left) | |||
92 | overall_left = left; | |||
93 | if (top < overall_top) | |||
94 | overall_top = top; | |||
95 | if (right > overall_right) | |||
96 | overall_right = right; | |||
97 | if (bottom > overall_bottom) | |||
98 | overall_bottom = bottom; | |||
99 | x += xftg->metrics.xOff; | |||
100 | y += xftg->metrics.yOff; | |||
101 | } | |||
102 | } | |||
103 | extents->x = -overall_left; | |||
104 | extents->y = -overall_top; | |||
105 | extents->width = overall_right - overall_left; | |||
106 | extents->height = overall_bottom - overall_top; | |||
107 | extents->xOff = x; | |||
108 | extents->yOff = y; | |||
109 | } | |||
110 | if (glyphs_loaded) | |||
111 | _XftFontManageMemory (dpy, pub); | |||
112 | } | |||
113 | ||||
114 | #define NUM_LOCAL1024 1024 | |||
115 | ||||
116 | _X_EXPORT__attribute__((visibility("default"))) void | |||
117 | XftTextExtents8 (Display *dpy, | |||
118 | XftFont *pub, | |||
119 | _Xconstconst FcChar8 *string, | |||
120 | int len, | |||
121 | XGlyphInfo *extents) | |||
122 | { | |||
123 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
124 | int i; | |||
125 | ||||
126 | if (len <= NUM_LOCAL1024) | |||
127 | glyphs = glyphs_local; | |||
128 | else | |||
129 | { | |||
130 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
131 | if (!glyphs) | |||
132 | { | |||
133 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
134 | return; | |||
135 | } | |||
136 | } | |||
137 | for (i = 0; i < len; i++) | |||
138 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
139 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
140 | if (glyphs != glyphs_local) | |||
141 | free (glyphs); | |||
142 | } | |||
143 | ||||
144 | _X_EXPORT__attribute__((visibility("default"))) void | |||
145 | XftTextExtents16 (Display *dpy, | |||
146 | XftFont *pub, | |||
147 | _Xconstconst FcChar16 *string, | |||
148 | int len, | |||
149 | XGlyphInfo *extents) | |||
150 | { | |||
151 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
152 | int i; | |||
153 | ||||
154 | if (len <= NUM_LOCAL1024) | |||
155 | glyphs = glyphs_local; | |||
156 | else | |||
157 | { | |||
158 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
159 | if (!glyphs) | |||
160 | { | |||
161 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
162 | return; | |||
163 | } | |||
164 | } | |||
165 | for (i = 0; i < len; i++) | |||
166 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
167 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
168 | if (glyphs != glyphs_local) | |||
169 | free (glyphs); | |||
170 | } | |||
171 | ||||
172 | _X_EXPORT__attribute__((visibility("default"))) void | |||
173 | XftTextExtents32 (Display *dpy, | |||
174 | XftFont *pub, | |||
175 | _Xconstconst FcChar32 *string, | |||
176 | int len, | |||
177 | XGlyphInfo *extents) | |||
178 | { | |||
179 | FT_UInt *glyphs, glyphs_local[NUM_LOCAL1024]; | |||
180 | int i; | |||
181 | ||||
182 | if (len <= NUM_LOCAL1024) | |||
| ||||
183 | glyphs = glyphs_local; | |||
184 | else | |||
185 | { | |||
186 | glyphs = malloc (len * sizeof (FT_UInt)); | |||
187 | if (!glyphs) | |||
188 | { | |||
189 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
190 | return; | |||
191 | } | |||
192 | } | |||
193 | for (i = 0; i < len; i++) | |||
194 | glyphs[i] = XftCharIndex (dpy, pub, string[i]); | |||
195 | XftGlyphExtents (dpy, pub, glyphs, len, extents); | |||
196 | if (glyphs != glyphs_local) | |||
197 | free (glyphs); | |||
198 | } | |||
199 | ||||
200 | _X_EXPORT__attribute__((visibility("default"))) void | |||
201 | XftTextExtentsUtf8 (Display *dpy, | |||
202 | XftFont *pub, | |||
203 | _Xconstconst FcChar8 *string, | |||
204 | int len, | |||
205 | XGlyphInfo *extents) | |||
206 | { | |||
207 | FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL1024]; | |||
208 | FcChar32 ucs4; | |||
209 | int i; | |||
210 | int l; | |||
211 | int size; | |||
212 | ||||
213 | i = 0; | |||
214 | glyphs = glyphs_local; | |||
215 | size = NUM_LOCAL1024; | |||
216 | while (len && (l = FcUtf8ToUcs4 (string, &ucs4, len)) > 0) | |||
217 | { | |||
218 | if (i == size) | |||
219 | { | |||
220 | glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); | |||
221 | if (!glyphs_new) | |||
222 | { | |||
223 | if (glyphs != glyphs_local) | |||
224 | free (glyphs); | |||
225 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
226 | return; | |||
227 | } | |||
228 | memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt))__builtin___memcpy_chk (glyphs_new, glyphs, size * sizeof (FT_UInt ), __builtin_object_size (glyphs_new, 0)); | |||
229 | size *= 2; | |||
230 | if (glyphs != glyphs_local) | |||
231 | free (glyphs); | |||
232 | glyphs = glyphs_new; | |||
233 | } | |||
234 | glyphs[i++] = XftCharIndex (dpy, pub, ucs4); | |||
235 | string += l; | |||
236 | len -= l; | |||
237 | } | |||
238 | XftGlyphExtents (dpy, pub, glyphs, i, extents); | |||
239 | if (glyphs != glyphs_local) | |||
240 | free (glyphs); | |||
241 | } | |||
242 | ||||
243 | _X_EXPORT__attribute__((visibility("default"))) void | |||
244 | XftTextExtentsUtf16 (Display *dpy, | |||
245 | XftFont *pub, | |||
246 | _Xconstconst FcChar8 *string, | |||
247 | FcEndian endian, | |||
248 | int len, | |||
249 | XGlyphInfo *extents) | |||
250 | { | |||
251 | FT_UInt *glyphs, *glyphs_new, glyphs_local[NUM_LOCAL1024]; | |||
252 | FcChar32 ucs4; | |||
253 | int i; | |||
254 | int l; | |||
255 | int size; | |||
256 | ||||
257 | i = 0; | |||
258 | glyphs = glyphs_local; | |||
259 | size = NUM_LOCAL1024; | |||
260 | while (len && (l = FcUtf16ToUcs4 (string, endian, &ucs4, len)) > 0) | |||
261 | { | |||
262 | if (i == size) | |||
263 | { | |||
264 | glyphs_new = malloc (size * 2 * sizeof (FT_UInt)); | |||
265 | if (!glyphs_new) | |||
266 | { | |||
267 | if (glyphs != glyphs_local) | |||
268 | free (glyphs); | |||
269 | memset (extents, '\0', sizeof (XGlyphInfo))__builtin___memset_chk (extents, '\0', sizeof (XGlyphInfo), __builtin_object_size (extents, 0)); | |||
270 | return; | |||
271 | } | |||
272 | memcpy (glyphs_new, glyphs, size * sizeof (FT_UInt))__builtin___memcpy_chk (glyphs_new, glyphs, size * sizeof (FT_UInt ), __builtin_object_size (glyphs_new, 0)); | |||
273 | size *= 2; | |||
274 | if (glyphs != glyphs_local) | |||
275 | free (glyphs); | |||
276 | glyphs = glyphs_new; | |||
277 | } | |||
278 | glyphs[i++] = XftCharIndex (dpy, pub, ucs4); | |||
279 | string += l; | |||
280 | len -= l; | |||
281 | } | |||
282 | XftGlyphExtents (dpy, pub, glyphs, i, extents); | |||
283 | if (glyphs != glyphs_local) | |||
284 | free (glyphs); | |||
285 | } |