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
|
/************************************************************************
Copyright 1987, 1998 The Open Group
All Rights Reserved.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
************************************************************************/
/* $TOG: glyphcurs.c /main/29 1998/02/09 14:19:46 kaleb $ */
#include "misc.h"
#include "fontstruct.h"
#include "dixfontstr.h"
#include "scrnintstr.h"
#include "gcstruct.h"
#include "resource.h"
#include "dix.h"
#include "cursorstr.h"
#include "opaque.h"
#include "servermd.h"
/*
get the bits out of the font in a portable way. to avoid
dealing with padding and such-like, we draw the glyph into
a bitmap, then read the bits out with GetImage, which
uses server-natural format.
since all screens return the same bitmap format, we'll just use
the first one we find.
the character origin lines up with the hotspot in the
cursor metrics.
*/
int
ServerBitsFromGlyph(pfont, ch, cm, ppbits)
FontPtr pfont;
unsigned int ch;
register CursorMetricPtr cm;
unsigned char **ppbits;
{
register ScreenPtr pScreen;
register GCPtr pGC;
xRectangle rect;
PixmapPtr ppix;
long nby;
char *pbits;
ChangeGCVal gcval[3];
unsigned char char2b[2];
/* turn glyph index into a protocol-format char2b */
char2b[0] = (unsigned char)(ch >> 8);
char2b[1] = (unsigned char)(ch & 0xff);
pScreen = screenInfo.screens[0];
nby = BitmapBytePad(cm->width) * (long)cm->height;
pbits = (char *)xalloc(nby);
if (!pbits)
return BadAlloc;
/* zeroing the (pad) bits seems to help some ddx cursor handling */
bzero(pbits, nby);
ppix = (PixmapPtr)(*pScreen->CreatePixmap)(pScreen, cm->width,
cm->height, 1);
pGC = GetScratchGC(1, pScreen);
if (!ppix || !pGC)
{
if (ppix)
(*pScreen->DestroyPixmap)(ppix);
if (pGC)
FreeScratchGC(pGC);
xfree(pbits);
return BadAlloc;
}
rect.x = 0;
rect.y = 0;
rect.width = cm->width;
rect.height = cm->height;
/* fill the pixmap with 0 */
gcval[0].val = GXcopy;
gcval[1].val = 0;
gcval[2].ptr = (pointer)pfont;
dixChangeGC(NullClient, pGC, GCFunction | GCForeground | GCFont,
NULL, gcval);
ValidateGC((DrawablePtr)ppix, pGC);
(*pGC->ops->PolyFillRect)((DrawablePtr)ppix, pGC, 1, &rect);
/* draw the glyph */
gcval[0].val = 1;
dixChangeGC(NullClient, pGC, GCForeground, NULL, gcval);
ValidateGC((DrawablePtr)ppix, pGC);
(*pGC->ops->PolyText16)((DrawablePtr)ppix, pGC, cm->xhot, cm->yhot,
1, (unsigned short *)char2b);
(*pScreen->GetImage)((DrawablePtr)ppix, 0, 0, cm->width, cm->height,
XYPixmap, 1, pbits);
*ppbits = (unsigned char *)pbits;
FreeScratchGC(pGC);
(*pScreen->DestroyPixmap)(ppix);
return Success;
}
Bool
CursorMetricsFromGlyph( pfont, ch, cm)
register FontPtr pfont;
unsigned ch;
register CursorMetricPtr cm;
{
CharInfoPtr pci;
unsigned long nglyphs;
CARD8 chs[2];
FontEncoding encoding;
chs[0] = ch >> 8;
chs[1] = ch;
encoding = (FONTLASTROW(pfont) == 0) ? Linear16Bit : TwoD16Bit;
if (encoding == Linear16Bit)
{
if (ch < pfont->info.firstCol || pfont->info.lastCol < ch)
return FALSE;
}
else
{
if (chs[0] < pfont->info.firstRow || pfont->info.lastRow < chs[0])
return FALSE;
if (chs[1] < pfont->info.firstCol || pfont->info.lastCol < chs[1])
return FALSE;
}
(*pfont->get_glyphs) (pfont, 1, chs, encoding, &nglyphs, &pci);
if (nglyphs == 0)
return FALSE;
cm->width = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
cm->height = pci->metrics.descent + pci->metrics.ascent;
if (pci->metrics.leftSideBearing > 0)
{
cm->width += pci->metrics.leftSideBearing;
cm->xhot = 0;
}
else
{
cm->xhot = -pci->metrics.leftSideBearing;
if (pci->metrics.rightSideBearing < 0)
cm->width -= pci->metrics.rightSideBearing;
}
if (pci->metrics.ascent < 0)
{
cm->height -= pci->metrics.ascent;
cm->yhot = 0;
}
else
{
cm->yhot = pci->metrics.ascent;
if (pci->metrics.descent < 0)
cm->height -= pci->metrics.descent;
}
return TRUE;
}
|
