1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski // MARKER(update_precomp.py): autogen include statement, do not remove
25*b1cdbd2cSJim Jagielski #include "precompiled_vcl.hxx"
26*b1cdbd2cSJim Jagielski
27*b1cdbd2cSJim Jagielski #include <glyphcache.hxx>
28*b1cdbd2cSJim Jagielski #include <string.h>
29*b1cdbd2cSJim Jagielski
30*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
31*b1cdbd2cSJim Jagielski
RawBitmap()32*b1cdbd2cSJim Jagielski RawBitmap::RawBitmap()
33*b1cdbd2cSJim Jagielski : mpBits(0), mnAllocated(0)
34*b1cdbd2cSJim Jagielski {}
35*b1cdbd2cSJim Jagielski
36*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
37*b1cdbd2cSJim Jagielski
~RawBitmap()38*b1cdbd2cSJim Jagielski RawBitmap::~RawBitmap()
39*b1cdbd2cSJim Jagielski {
40*b1cdbd2cSJim Jagielski delete[] mpBits;
41*b1cdbd2cSJim Jagielski mpBits = 0;
42*b1cdbd2cSJim Jagielski mnAllocated = 0;
43*b1cdbd2cSJim Jagielski }
44*b1cdbd2cSJim Jagielski
45*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
46*b1cdbd2cSJim Jagielski
47*b1cdbd2cSJim Jagielski // used by 90 and 270 degree rotations on 8 bit deep bitmaps
ImplRotate8_90(unsigned char * p1,const unsigned char * p2,int xmax,int ymax,int dx,int dy,int nPad)48*b1cdbd2cSJim Jagielski static void ImplRotate8_90( unsigned char* p1, const unsigned char* p2,
49*b1cdbd2cSJim Jagielski int xmax, int ymax, int dx, int dy, int nPad )
50*b1cdbd2cSJim Jagielski {
51*b1cdbd2cSJim Jagielski for( int y = ymax; --y >= 0; p2 += dy )
52*b1cdbd2cSJim Jagielski {
53*b1cdbd2cSJim Jagielski for( int x = xmax; --x >= 0; p2 += dx )
54*b1cdbd2cSJim Jagielski *(p1++) = *p2;
55*b1cdbd2cSJim Jagielski for( int i = nPad; --i >= 0; )
56*b1cdbd2cSJim Jagielski *(p1++) = 0;
57*b1cdbd2cSJim Jagielski }
58*b1cdbd2cSJim Jagielski }
59*b1cdbd2cSJim Jagielski
60*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
61*b1cdbd2cSJim Jagielski
62*b1cdbd2cSJim Jagielski // used by inplace 180 degree rotation on 8 bit deep bitmaps
ImplRotate8_180(unsigned char * p1,int xmax,int ymax,int nPad)63*b1cdbd2cSJim Jagielski static void ImplRotate8_180( unsigned char* p1, int xmax, int ymax, int nPad )
64*b1cdbd2cSJim Jagielski {
65*b1cdbd2cSJim Jagielski unsigned char* p2 = p1 + ymax * (xmax + nPad);
66*b1cdbd2cSJim Jagielski for( int y = ymax/2; --y >= 0; )
67*b1cdbd2cSJim Jagielski {
68*b1cdbd2cSJim Jagielski p2 -= nPad;
69*b1cdbd2cSJim Jagielski for( int x = xmax; --x >= 0; )
70*b1cdbd2cSJim Jagielski {
71*b1cdbd2cSJim Jagielski unsigned char cTmp = *(--p2);
72*b1cdbd2cSJim Jagielski *p2 = *p1;
73*b1cdbd2cSJim Jagielski *(p1++) = cTmp;
74*b1cdbd2cSJim Jagielski }
75*b1cdbd2cSJim Jagielski p1 += nPad;
76*b1cdbd2cSJim Jagielski }
77*b1cdbd2cSJim Jagielski
78*b1cdbd2cSJim Jagielski // reverse middle line
79*b1cdbd2cSJim Jagielski p2 -= nPad;
80*b1cdbd2cSJim Jagielski while( p1 < p2 )
81*b1cdbd2cSJim Jagielski {
82*b1cdbd2cSJim Jagielski unsigned char cTmp = *(--p2);
83*b1cdbd2cSJim Jagielski *p2 = *p1;
84*b1cdbd2cSJim Jagielski *(p1++) = cTmp;
85*b1cdbd2cSJim Jagielski }
86*b1cdbd2cSJim Jagielski }
87*b1cdbd2cSJim Jagielski
88*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
89*b1cdbd2cSJim Jagielski
90*b1cdbd2cSJim Jagielski // used by 90 or 270 degree rotations on 1 bit deep bitmaps
ImplRotate1_90(unsigned char * p1,const unsigned char * p2,int xmax,int ymax,int dx,int nShift,int nDeltaShift,int nPad)91*b1cdbd2cSJim Jagielski static void ImplRotate1_90( unsigned char* p1, const unsigned char* p2,
92*b1cdbd2cSJim Jagielski int xmax, int ymax, int dx, int nShift, int nDeltaShift, int nPad )
93*b1cdbd2cSJim Jagielski {
94*b1cdbd2cSJim Jagielski for( int y = ymax; --y >= 0; )
95*b1cdbd2cSJim Jagielski {
96*b1cdbd2cSJim Jagielski unsigned nTemp = 1;
97*b1cdbd2cSJim Jagielski const unsigned char* p20 = p2;
98*b1cdbd2cSJim Jagielski for( int x = xmax; --x >= 0; p2 += dx )
99*b1cdbd2cSJim Jagielski {
100*b1cdbd2cSJim Jagielski // build bitwise and store when byte finished
101*b1cdbd2cSJim Jagielski nTemp += nTemp + ((*p2 >> nShift) & 1);
102*b1cdbd2cSJim Jagielski if( nTemp >= 0x100U )
103*b1cdbd2cSJim Jagielski {
104*b1cdbd2cSJim Jagielski *(p1++) = (unsigned char)nTemp;
105*b1cdbd2cSJim Jagielski nTemp = 1;
106*b1cdbd2cSJim Jagielski }
107*b1cdbd2cSJim Jagielski }
108*b1cdbd2cSJim Jagielski p2 = p20;
109*b1cdbd2cSJim Jagielski
110*b1cdbd2cSJim Jagielski // store left aligned remainder if needed
111*b1cdbd2cSJim Jagielski if( nTemp > 1 )
112*b1cdbd2cSJim Jagielski {
113*b1cdbd2cSJim Jagielski for(; nTemp < 0x100U; nTemp += nTemp ) ;
114*b1cdbd2cSJim Jagielski *(p1++) = (unsigned char)nTemp;
115*b1cdbd2cSJim Jagielski }
116*b1cdbd2cSJim Jagielski // pad scanline with zeroes
117*b1cdbd2cSJim Jagielski for( int i = nPad; --i >= 0;)
118*b1cdbd2cSJim Jagielski *(p1++) = 0;
119*b1cdbd2cSJim Jagielski
120*b1cdbd2cSJim Jagielski // increase/decrease shift, but keep bound inside 0 to 7
121*b1cdbd2cSJim Jagielski nShift += nDeltaShift;
122*b1cdbd2cSJim Jagielski if( nShift != (nShift & 7) )
123*b1cdbd2cSJim Jagielski p2 -= nDeltaShift;
124*b1cdbd2cSJim Jagielski nShift &= 7;
125*b1cdbd2cSJim Jagielski }
126*b1cdbd2cSJim Jagielski }
127*b1cdbd2cSJim Jagielski
128*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
129*b1cdbd2cSJim Jagielski
130*b1cdbd2cSJim Jagielski // used by 180 degrees rotations on 1 bit deep bitmaps
ImplRotate1_180(unsigned char * p1,const unsigned char * p2,int xmax,int ymax,int nPad)131*b1cdbd2cSJim Jagielski static void ImplRotate1_180( unsigned char* p1, const unsigned char* p2,
132*b1cdbd2cSJim Jagielski int xmax, int ymax, int nPad )
133*b1cdbd2cSJim Jagielski {
134*b1cdbd2cSJim Jagielski --p2;
135*b1cdbd2cSJim Jagielski for( int y = ymax; --y >= 0; )
136*b1cdbd2cSJim Jagielski {
137*b1cdbd2cSJim Jagielski p2 -= nPad;
138*b1cdbd2cSJim Jagielski
139*b1cdbd2cSJim Jagielski unsigned nTemp = 1;
140*b1cdbd2cSJim Jagielski unsigned nInp = (0x100 + *p2) >> (-xmax & 7);
141*b1cdbd2cSJim Jagielski for( int x = xmax; --x >= 0; )
142*b1cdbd2cSJim Jagielski {
143*b1cdbd2cSJim Jagielski // build bitwise and store when byte finished
144*b1cdbd2cSJim Jagielski nTemp += nTemp + (nInp & 1);
145*b1cdbd2cSJim Jagielski if( nTemp >= 0x100 )
146*b1cdbd2cSJim Jagielski {
147*b1cdbd2cSJim Jagielski *(p1++) = (unsigned char)nTemp;
148*b1cdbd2cSJim Jagielski nTemp = 1;
149*b1cdbd2cSJim Jagielski }
150*b1cdbd2cSJim Jagielski // update input byte if needed (and available)
151*b1cdbd2cSJim Jagielski if( (nInp >>= 1) <= 1 && ((y != 0) || (x != 0)) )
152*b1cdbd2cSJim Jagielski nInp = 0x100 + *(--p2);
153*b1cdbd2cSJim Jagielski }
154*b1cdbd2cSJim Jagielski
155*b1cdbd2cSJim Jagielski // store left aligned remainder if needed
156*b1cdbd2cSJim Jagielski if( nTemp > 1 )
157*b1cdbd2cSJim Jagielski {
158*b1cdbd2cSJim Jagielski for(; nTemp < 0x100; nTemp += nTemp ) ;
159*b1cdbd2cSJim Jagielski *(p1++) = (unsigned char)nTemp;
160*b1cdbd2cSJim Jagielski }
161*b1cdbd2cSJim Jagielski // scanline pad is already clean
162*b1cdbd2cSJim Jagielski p1 += nPad;
163*b1cdbd2cSJim Jagielski }
164*b1cdbd2cSJim Jagielski }
165*b1cdbd2cSJim Jagielski
166*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
167*b1cdbd2cSJim Jagielski
Rotate(int nAngle)168*b1cdbd2cSJim Jagielski bool RawBitmap::Rotate( int nAngle )
169*b1cdbd2cSJim Jagielski {
170*b1cdbd2cSJim Jagielski sal_uLong nNewScanlineSize = 0;
171*b1cdbd2cSJim Jagielski sal_uLong nNewHeight = 0;
172*b1cdbd2cSJim Jagielski sal_uLong nNewWidth = 0;
173*b1cdbd2cSJim Jagielski
174*b1cdbd2cSJim Jagielski // do inplace rotation or prepare double buffered rotation
175*b1cdbd2cSJim Jagielski switch( nAngle )
176*b1cdbd2cSJim Jagielski {
177*b1cdbd2cSJim Jagielski case 0: // nothing to do
178*b1cdbd2cSJim Jagielski case 3600:
179*b1cdbd2cSJim Jagielski return true;
180*b1cdbd2cSJim Jagielski default: // non rectangular angles not allowed
181*b1cdbd2cSJim Jagielski return false;
182*b1cdbd2cSJim Jagielski case 1800: // rotate by 180 degrees
183*b1cdbd2cSJim Jagielski mnXOffset = -(mnXOffset + mnWidth);
184*b1cdbd2cSJim Jagielski mnYOffset = -(mnYOffset + mnHeight);
185*b1cdbd2cSJim Jagielski if( mnBitCount == 8 )
186*b1cdbd2cSJim Jagielski {
187*b1cdbd2cSJim Jagielski ImplRotate8_180( mpBits, mnWidth, mnHeight, mnScanlineSize-mnWidth );
188*b1cdbd2cSJim Jagielski return true;
189*b1cdbd2cSJim Jagielski }
190*b1cdbd2cSJim Jagielski nNewWidth = mnWidth;
191*b1cdbd2cSJim Jagielski nNewHeight = mnHeight;
192*b1cdbd2cSJim Jagielski nNewScanlineSize = mnScanlineSize;
193*b1cdbd2cSJim Jagielski break;
194*b1cdbd2cSJim Jagielski case +900: // left by 90 degrees
195*b1cdbd2cSJim Jagielski case -900:
196*b1cdbd2cSJim Jagielski case 2700: // right by 90 degrees
197*b1cdbd2cSJim Jagielski nNewWidth = mnHeight;
198*b1cdbd2cSJim Jagielski nNewHeight = mnWidth;
199*b1cdbd2cSJim Jagielski if( mnBitCount==1 )
200*b1cdbd2cSJim Jagielski nNewScanlineSize = (nNewWidth + 7) / 8;
201*b1cdbd2cSJim Jagielski else
202*b1cdbd2cSJim Jagielski nNewScanlineSize = (nNewWidth + 3) & -4;
203*b1cdbd2cSJim Jagielski break;
204*b1cdbd2cSJim Jagielski }
205*b1cdbd2cSJim Jagielski
206*b1cdbd2cSJim Jagielski unsigned int nBufSize = nNewHeight * nNewScanlineSize;
207*b1cdbd2cSJim Jagielski unsigned char* pBuf = new unsigned char[ nBufSize ];
208*b1cdbd2cSJim Jagielski if( !pBuf )
209*b1cdbd2cSJim Jagielski return false;
210*b1cdbd2cSJim Jagielski
211*b1cdbd2cSJim Jagielski memset( pBuf, 0, nBufSize );
212*b1cdbd2cSJim Jagielski int i;
213*b1cdbd2cSJim Jagielski
214*b1cdbd2cSJim Jagielski // dispatch non-inplace rotations
215*b1cdbd2cSJim Jagielski switch( nAngle )
216*b1cdbd2cSJim Jagielski {
217*b1cdbd2cSJim Jagielski case 1800: // rotate by 180 degrees
218*b1cdbd2cSJim Jagielski // we know we only need to deal with 1 bit depth
219*b1cdbd2cSJim Jagielski ImplRotate1_180( pBuf, mpBits + mnHeight * mnScanlineSize,
220*b1cdbd2cSJim Jagielski mnWidth, mnHeight, mnScanlineSize - (mnWidth + 7) / 8 );
221*b1cdbd2cSJim Jagielski break;
222*b1cdbd2cSJim Jagielski case +900: // rotate left by 90 degrees
223*b1cdbd2cSJim Jagielski i = mnXOffset;
224*b1cdbd2cSJim Jagielski mnXOffset = mnYOffset;
225*b1cdbd2cSJim Jagielski mnYOffset = -nNewHeight - i;
226*b1cdbd2cSJim Jagielski if( mnBitCount == 8 )
227*b1cdbd2cSJim Jagielski ImplRotate8_90( pBuf, mpBits + mnWidth - 1,
228*b1cdbd2cSJim Jagielski nNewWidth, nNewHeight, +mnScanlineSize, -1-mnHeight*mnScanlineSize,
229*b1cdbd2cSJim Jagielski nNewScanlineSize - nNewWidth );
230*b1cdbd2cSJim Jagielski else
231*b1cdbd2cSJim Jagielski ImplRotate1_90( pBuf, mpBits + (mnWidth - 1) / 8,
232*b1cdbd2cSJim Jagielski nNewWidth, nNewHeight, +mnScanlineSize,
233*b1cdbd2cSJim Jagielski (-mnWidth & 7), +1, nNewScanlineSize - (nNewWidth + 7) / 8 );
234*b1cdbd2cSJim Jagielski break;
235*b1cdbd2cSJim Jagielski case 2700: // rotate right by 90 degrees
236*b1cdbd2cSJim Jagielski case -900:
237*b1cdbd2cSJim Jagielski i = mnXOffset;
238*b1cdbd2cSJim Jagielski mnXOffset = -(nNewWidth + mnYOffset);
239*b1cdbd2cSJim Jagielski mnYOffset = i;
240*b1cdbd2cSJim Jagielski if( mnBitCount == 8 )
241*b1cdbd2cSJim Jagielski ImplRotate8_90( pBuf, mpBits + mnScanlineSize * (mnHeight-1),
242*b1cdbd2cSJim Jagielski nNewWidth, nNewHeight, -mnScanlineSize, +1+mnHeight*mnScanlineSize,
243*b1cdbd2cSJim Jagielski nNewScanlineSize - nNewWidth );
244*b1cdbd2cSJim Jagielski else
245*b1cdbd2cSJim Jagielski ImplRotate1_90( pBuf, mpBits + mnScanlineSize * (mnHeight-1),
246*b1cdbd2cSJim Jagielski nNewWidth, nNewHeight, -mnScanlineSize,
247*b1cdbd2cSJim Jagielski +7, -1, nNewScanlineSize - (nNewWidth + 7) / 8 );
248*b1cdbd2cSJim Jagielski break;
249*b1cdbd2cSJim Jagielski }
250*b1cdbd2cSJim Jagielski
251*b1cdbd2cSJim Jagielski mnWidth = nNewWidth;
252*b1cdbd2cSJim Jagielski mnHeight = nNewHeight;
253*b1cdbd2cSJim Jagielski mnScanlineSize = nNewScanlineSize;
254*b1cdbd2cSJim Jagielski
255*b1cdbd2cSJim Jagielski if( nBufSize < mnAllocated )
256*b1cdbd2cSJim Jagielski {
257*b1cdbd2cSJim Jagielski memcpy( mpBits, pBuf, nBufSize );
258*b1cdbd2cSJim Jagielski delete[] pBuf;
259*b1cdbd2cSJim Jagielski }
260*b1cdbd2cSJim Jagielski else
261*b1cdbd2cSJim Jagielski {
262*b1cdbd2cSJim Jagielski delete[] mpBits;
263*b1cdbd2cSJim Jagielski mpBits = pBuf;
264*b1cdbd2cSJim Jagielski mnAllocated = nBufSize;
265*b1cdbd2cSJim Jagielski }
266*b1cdbd2cSJim Jagielski
267*b1cdbd2cSJim Jagielski return true;
268*b1cdbd2cSJim Jagielski }
269*b1cdbd2cSJim Jagielski
270*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------
271