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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
|
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: gcach_rbmp.cxx,v $
* $Revision: 1.10 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_vcl.hxx"
#include <vcl/glyphcache.hxx>
#include <string.h>
//------------------------------------------------------------------------
RawBitmap::RawBitmap()
: mpBits(0), mnAllocated(0)
{}
//------------------------------------------------------------------------
RawBitmap::~RawBitmap()
{
delete[] mpBits;
mpBits = 0;
mnAllocated = 0;
}
//------------------------------------------------------------------------
// used by 90 and 270 degree rotations on 8 bit deep bitmaps
static void ImplRotate8_90( unsigned char* p1, const unsigned char* p2,
int xmax, int ymax, int dx, int dy, int nPad )
{
for( int y = ymax; --y >= 0; p2 += dy )
{
for( int x = xmax; --x >= 0; p2 += dx )
*(p1++) = *p2;
for( int i = nPad; --i >= 0; )
*(p1++) = 0;
}
}
//------------------------------------------------------------------------
// used by inplace 180 degree rotation on 8 bit deep bitmaps
static void ImplRotate8_180( unsigned char* p1, int xmax, int ymax, int nPad )
{
unsigned char* p2 = p1 + ymax * (xmax + nPad);
for( int y = ymax/2; --y >= 0; )
{
p2 -= nPad;
for( int x = xmax; --x >= 0; )
{
unsigned char cTmp = *(--p2);
*p2 = *p1;
*(p1++) = cTmp;
}
p1 += nPad;
}
// reverse middle line
p2 -= nPad;
while( p1 < p2 )
{
unsigned char cTmp = *(--p2);
*p2 = *p1;
*(p1++) = cTmp;
}
}
//------------------------------------------------------------------------
// used by 90 or 270 degree rotations on 1 bit deep bitmaps
static void ImplRotate1_90( unsigned char* p1, const unsigned char* p2,
int xmax, int ymax, int dx, int nShift, int nDeltaShift, int nPad )
{
for( int y = ymax; --y >= 0; )
{
unsigned nTemp = 1;
const unsigned char* p20 = p2;
for( int x = xmax; --x >= 0; p2 += dx )
{
// build bitwise and store when byte finished
nTemp += nTemp + ((*p2 >> nShift) & 1);
if( nTemp >= 0x100U )
{
*(p1++) = (unsigned char)nTemp;
nTemp = 1;
}
}
p2 = p20;
// store left aligned remainder if needed
if( nTemp > 1 )
{
for(; nTemp < 0x100U; nTemp += nTemp );
*(p1++) = (unsigned char)nTemp;
}
// pad scanline with zeroes
for( int i = nPad; --i >= 0;)
*(p1++) = 0;
// increase/decrease shift, but keep bound inside 0 to 7
nShift += nDeltaShift;
if( nShift != (nShift & 7) )
p2 -= nDeltaShift;
nShift &= 7;
}
}
//------------------------------------------------------------------------
// used by 180 degrees rotations on 1 bit deep bitmaps
static void ImplRotate1_180( unsigned char* p1, const unsigned char* p2,
int xmax, int ymax, int nPad )
{
--p2;
for( int y = ymax; --y >= 0; )
{
p2 -= nPad;
unsigned nTemp = 1;
unsigned nInp = (0x100 + *p2) >> (-xmax & 7);
for( int x = xmax; --x >= 0; )
{
// build bitwise and store when byte finished
nTemp += nTemp + (nInp & 1);
if( nTemp >= 0x100 )
{
*(p1++) = (unsigned char)nTemp;
nTemp = 1;
}
// update input byte if needed (and available)
if( (nInp >>= 1) <= 1 && ((y != 0) || (x != 0)) )
nInp = 0x100 + *(--p2);
}
// store left aligned remainder if needed
if( nTemp > 1 )
{
for(; nTemp < 0x100; nTemp += nTemp );
*(p1++) = (unsigned char)nTemp;
}
// scanline pad is already clean
p1 += nPad;
}
}
//------------------------------------------------------------------------
bool RawBitmap::Rotate( int nAngle )
{
ULONG nNewScanlineSize = 0;
ULONG nNewHeight = 0;
ULONG nNewWidth = 0;
// do inplace rotation or prepare double buffered rotation
switch( nAngle )
{
case 0: // nothing to do
case 3600:
return true;
default: // non rectangular angles not allowed
return false;
case 1800: // rotate by 180 degrees
mnXOffset = -(mnXOffset + mnWidth);
mnYOffset = -(mnYOffset + mnHeight);
if( mnBitCount == 8 )
{
ImplRotate8_180( mpBits, mnWidth, mnHeight, mnScanlineSize-mnWidth );
return true;
}
nNewWidth = mnWidth;
nNewHeight = mnHeight;
nNewScanlineSize = mnScanlineSize;
break;
case +900: // left by 90 degrees
case -900:
case 2700: // right by 90 degrees
nNewWidth = mnHeight;
nNewHeight = mnWidth;
if( mnBitCount==1 )
nNewScanlineSize = (nNewWidth + 7) / 8;
else
nNewScanlineSize = (nNewWidth + 3) & -4;
break;
}
unsigned int nBufSize = nNewHeight * nNewScanlineSize;
unsigned char* pBuf = new unsigned char[ nBufSize ];
if( !pBuf )
return false;
memset( pBuf, 0, nBufSize );
int i;
// dispatch non-inplace rotations
switch( nAngle )
{
case 1800: // rotate by 180 degrees
// we know we only need to deal with 1 bit depth
ImplRotate1_180( pBuf, mpBits + mnHeight * mnScanlineSize,
mnWidth, mnHeight, mnScanlineSize - (mnWidth + 7) / 8 );
break;
case +900: // rotate left by 90 degrees
i = mnXOffset;
mnXOffset = mnYOffset;
mnYOffset = -nNewHeight - i;
if( mnBitCount == 8 )
ImplRotate8_90( pBuf, mpBits + mnWidth - 1,
nNewWidth, nNewHeight, +mnScanlineSize, -1-mnHeight*mnScanlineSize,
nNewScanlineSize - nNewWidth );
else
ImplRotate1_90( pBuf, mpBits + (mnWidth - 1) / 8,
nNewWidth, nNewHeight, +mnScanlineSize,
(-mnWidth & 7), +1, nNewScanlineSize - (nNewWidth + 7) / 8 );
break;
case 2700: // rotate right by 90 degrees
case -900:
i = mnXOffset;
mnXOffset = -(nNewWidth + mnYOffset);
mnYOffset = i;
if( mnBitCount == 8 )
ImplRotate8_90( pBuf, mpBits + mnScanlineSize * (mnHeight-1),
nNewWidth, nNewHeight, -mnScanlineSize, +1+mnHeight*mnScanlineSize,
nNewScanlineSize - nNewWidth );
else
ImplRotate1_90( pBuf, mpBits + mnScanlineSize * (mnHeight-1),
nNewWidth, nNewHeight, -mnScanlineSize,
+7, -1, nNewScanlineSize - (nNewWidth + 7) / 8 );
break;
}
mnWidth = nNewWidth;
mnHeight = nNewHeight;
mnScanlineSize = nNewScanlineSize;
if( nBufSize < mnAllocated )
{
memcpy( mpBits, pBuf, nBufSize );
delete[] pBuf;
}
else
{
delete[] mpBits;
mpBits = pBuf;
mnAllocated = nBufSize;
}
return true;
}
//------------------------------------------------------------------------
|
