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a09e091a JB |
1 | /*********************************************************** |
2 | ||
3 | Copyright 1987, 1998 The Open Group | |
4 | ||
5 | Permission to use, copy, modify, distribute, and sell this software and its | |
6 | documentation for any purpose is hereby granted without fee, provided that | |
7 | the above copyright notice appear in all copies and that both that | |
8 | copyright notice and this permission notice appear in supporting | |
9 | documentation. | |
10 | ||
11 | The above copyright notice and this permission notice shall be included in | |
12 | all copies or substantial portions of the Software. | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN | |
18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
20 | ||
21 | Except as contained in this notice, the name of The Open Group shall not be | |
22 | used in advertising or otherwise to promote the sale, use or other dealings | |
23 | in this Software without prior written authorization from The Open Group. | |
24 | ||
25 | Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. | |
26 | ||
27 | All Rights Reserved | |
28 | ||
29 | Permission to use, copy, modify, and distribute this software and its | |
30 | documentation for any purpose and without fee is hereby granted, | |
31 | provided that the above copyright notice appear in all copies and that | |
32 | both that copyright notice and this permission notice appear in | |
33 | supporting documentation, and that the name of Digital not be | |
34 | used in advertising or publicity pertaining to distribution of the | |
35 | software without specific, written prior permission. | |
36 | ||
37 | DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
38 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
39 | DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
40 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
41 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
42 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
43 | SOFTWARE. | |
44 | ||
45 | ******************************************************************/ | |
46 | #ifdef HAVE_DIX_CONFIG_H | |
47 | #include <dix-config.h> | |
48 | #endif | |
49 | ||
50 | #include <X11/X.h> | |
51 | #include "gcstruct.h" | |
52 | #include "scrnintstr.h" | |
53 | #include "pixmapstr.h" | |
54 | #include "regionstr.h" | |
55 | #include "mi.h" | |
56 | #include "servermd.h" | |
57 | ||
58 | #define NPT 128 | |
59 | ||
60 | /* These were stolen from mfb. They don't really belong here. */ | |
61 | #define LONG2CHARSSAMEORDER(x) ((MiBits)(x)) | |
62 | #define LONG2CHARSDIFFORDER( x ) ( ( ( ( x ) & (MiBits)0x000000FF ) << 0x18 ) \ | |
63 | | ( ( ( x ) & (MiBits)0x0000FF00 ) << 0x08 ) \ | |
64 | | ( ( ( x ) & (MiBits)0x00FF0000 ) >> 0x08 ) \ | |
65 | | ( ( ( x ) & (MiBits)0xFF000000 ) >> 0x18 ) ) | |
66 | ||
67 | #define PGSZB 4 | |
68 | #define PPW (PGSZB<<3) /* assuming 8 bits per byte */ | |
69 | #define PGSZ PPW | |
70 | #define PLST (PPW-1) | |
71 | #define PIM PLST | |
72 | #define PWSH 5 | |
73 | ||
74 | /* miPushPixels -- squeegees the fill style of pGC through pBitMap | |
75 | * into pDrawable. pBitMap is a stencil (dx by dy of it is used, it may | |
76 | * be bigger) which is placed on the drawable at xOrg, yOrg. Where a 1 bit | |
77 | * is set in the bitmap, the fill style is put onto the drawable using | |
78 | * the GC's logical function. The drawable is not changed where the bitmap | |
79 | * has a zero bit or outside the area covered by the stencil. | |
80 | ||
81 | WARNING: | |
82 | this code works if the 1-bit deep pixmap format returned by GetSpans | |
83 | is the same as the format defined by the mfb code (i.e. 32-bit padding | |
84 | per scanline, scanline unit = 32 bits; later, this might mean | |
85 | bitsizeof(int) padding and sacnline unit == bitsizeof(int).) | |
86 | ||
87 | */ | |
88 | ||
89 | /* | |
90 | * in order to have both (MSB_FIRST and LSB_FIRST) versions of this | |
91 | * in the server, we need to rename one of them | |
92 | */ | |
93 | void | |
94 | miPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDrawable, | |
95 | int dx, int dy, int xOrg, int yOrg) | |
96 | { | |
97 | int h, dxDivPPW, ibEnd; | |
98 | MiBits *pwLineStart; | |
99 | MiBits *pw, *pwEnd; | |
100 | MiBits msk; | |
101 | int ib, w; | |
102 | int ipt; /* index into above arrays */ | |
103 | Bool fInBox; | |
104 | DDXPointRec pt[NPT], ptThisLine; | |
105 | int width[NPT]; | |
106 | ||
107 | #if 1 | |
108 | MiBits startmask; | |
109 | ||
110 | if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER) | |
111 | if (screenInfo.bitmapBitOrder == LSBFirst) | |
112 | startmask = (MiBits) (-1) ^ LONG2CHARSSAMEORDER((MiBits) (-1) << 1); | |
113 | else | |
114 | startmask = (MiBits) (-1) ^ LONG2CHARSSAMEORDER((MiBits) (-1) >> 1); | |
115 | else if (screenInfo.bitmapBitOrder == LSBFirst) | |
116 | startmask = (MiBits) (-1) ^ LONG2CHARSDIFFORDER((MiBits) (-1) << 1); | |
117 | else | |
118 | startmask = (MiBits) (-1) ^ LONG2CHARSDIFFORDER((MiBits) (-1) >> 1); | |
119 | #endif | |
120 | ||
121 | pwLineStart = malloc(BitmapBytePad(dx)); | |
122 | if (!pwLineStart) | |
123 | return; | |
124 | ipt = 0; | |
125 | dxDivPPW = dx / PPW; | |
126 | ||
127 | for (h = 0, ptThisLine.x = 0, ptThisLine.y = 0; h < dy; h++, ptThisLine.y++) { | |
128 | ||
129 | (*pBitMap->drawable.pScreen->GetSpans) ((DrawablePtr) pBitMap, dx, | |
130 | &ptThisLine, &dx, 1, | |
131 | (char *) pwLineStart); | |
132 | ||
133 | pw = pwLineStart; | |
134 | /* Process all words which are fully in the pixmap */ | |
135 | ||
136 | fInBox = FALSE; | |
137 | pwEnd = pwLineStart + dxDivPPW; | |
138 | while (pw < pwEnd) { | |
139 | w = *pw; | |
140 | #if 1 | |
141 | msk = startmask; | |
142 | #else | |
143 | msk = (MiBits) (-1) ^ SCRRIGHT((MiBits) (-1), 1); | |
144 | #endif | |
145 | for (ib = 0; ib < PPW; ib++) { | |
146 | if (w & msk) { | |
147 | if (!fInBox) { | |
148 | pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg; | |
149 | pt[ipt].y = h + yOrg; | |
150 | /* start new box */ | |
151 | fInBox = TRUE; | |
152 | } | |
153 | } | |
154 | else { | |
155 | if (fInBox) { | |
156 | width[ipt] = ((pw - pwLineStart) << PWSH) + | |
157 | ib + xOrg - pt[ipt].x; | |
158 | if (++ipt >= NPT) { | |
159 | (*pGC->ops->FillSpans) (pDrawable, pGC, | |
160 | NPT, pt, width, TRUE); | |
161 | ipt = 0; | |
162 | } | |
163 | /* end box */ | |
164 | fInBox = FALSE; | |
165 | } | |
166 | } | |
167 | #if 1 | |
168 | /* This is not quite right, but it'll do for now */ | |
169 | if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER) | |
170 | if (screenInfo.bitmapBitOrder == LSBFirst) | |
171 | msk = | |
172 | LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) << 1); | |
173 | else | |
174 | msk = | |
175 | LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) >> 1); | |
176 | else if (screenInfo.bitmapBitOrder == LSBFirst) | |
177 | msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) << 1); | |
178 | else | |
179 | msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1); | |
180 | #else | |
181 | msk = SCRRIGHT(msk, 1); | |
182 | #endif | |
183 | } | |
184 | pw++; | |
185 | } | |
186 | ibEnd = dx & PIM; | |
187 | if (ibEnd) { | |
188 | /* Process final partial word on line */ | |
189 | w = *pw; | |
190 | #if 1 | |
191 | msk = startmask; | |
192 | #else | |
193 | msk = (MiBits) (-1) ^ SCRRIGHT((MiBits) (-1), 1); | |
194 | #endif | |
195 | for (ib = 0; ib < ibEnd; ib++) { | |
196 | if (w & msk) { | |
197 | if (!fInBox) { | |
198 | /* start new box */ | |
199 | pt[ipt].x = ((pw - pwLineStart) << PWSH) + ib + xOrg; | |
200 | pt[ipt].y = h + yOrg; | |
201 | fInBox = TRUE; | |
202 | } | |
203 | } | |
204 | else { | |
205 | if (fInBox) { | |
206 | /* end box */ | |
207 | width[ipt] = ((pw - pwLineStart) << PWSH) + | |
208 | ib + xOrg - pt[ipt].x; | |
209 | if (++ipt >= NPT) { | |
210 | (*pGC->ops->FillSpans) (pDrawable, | |
211 | pGC, NPT, pt, width, TRUE); | |
212 | ipt = 0; | |
213 | } | |
214 | fInBox = FALSE; | |
215 | } | |
216 | } | |
217 | #if 1 | |
218 | /* This is not quite right, but it'll do for now */ | |
219 | if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER) | |
220 | if (screenInfo.bitmapBitOrder == LSBFirst) | |
221 | msk = | |
222 | LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) << 1); | |
223 | else | |
224 | msk = | |
225 | LONG2CHARSSAMEORDER(LONG2CHARSSAMEORDER(msk) >> 1); | |
226 | else if (screenInfo.bitmapBitOrder == LSBFirst) | |
227 | msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) << 1); | |
228 | else | |
229 | msk = LONG2CHARSDIFFORDER(LONG2CHARSDIFFORDER(msk) >> 1); | |
230 | #else | |
231 | msk = SCRRIGHT(msk, 1); | |
232 | #endif | |
233 | } | |
234 | } | |
235 | /* If scanline ended with last bit set, end the box */ | |
236 | if (fInBox) { | |
237 | width[ipt] = dx + xOrg - pt[ipt].x; | |
238 | if (++ipt >= NPT) { | |
239 | (*pGC->ops->FillSpans) (pDrawable, pGC, NPT, pt, width, TRUE); | |
240 | ipt = 0; | |
241 | } | |
242 | } | |
243 | } | |
244 | free(pwLineStart); | |
245 | /* Flush any remaining spans */ | |
246 | if (ipt) { | |
247 | (*pGC->ops->FillSpans) (pDrawable, pGC, ipt, pt, width, TRUE); | |
248 | } | |
249 | } |