Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <tools/poly.hxx>
21 :
22 : #include <vcl/salbtype.hxx>
23 : #include <vcl/bitmap.hxx>
24 : #include <vcl/region.hxx>
25 : #include <vcl/bmpacc.hxx>
26 :
27 : #include <bmpfast.hxx>
28 :
29 0 : void BitmapWriteAccess::SetLineColor( const Color& rColor )
30 : {
31 0 : delete mpLineColor;
32 :
33 0 : if( rColor.GetTransparency() == 255 )
34 0 : mpLineColor = NULL;
35 : else
36 0 : mpLineColor = ( HasPalette() ? new BitmapColor( (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
37 0 : }
38 :
39 0 : void BitmapWriteAccess::SetFillColor( const Color& rColor )
40 : {
41 0 : delete mpFillColor;
42 :
43 0 : if( rColor.GetTransparency() == 255 )
44 0 : mpFillColor = NULL;
45 : else
46 0 : mpFillColor = ( HasPalette() ? new BitmapColor( (sal_uInt8) GetBestPaletteIndex( rColor ) ) : new BitmapColor( rColor ) );
47 0 : }
48 :
49 0 : void BitmapWriteAccess::Erase( const Color& rColor )
50 : {
51 : // convert the color format from RGB to palette index if needed
52 : // TODO: provide and use Erase( BitmapColor& method)
53 0 : BitmapColor aColor = rColor;
54 0 : if( HasPalette() )
55 0 : aColor = BitmapColor( (sal_uInt8)GetBestPaletteIndex( rColor) );
56 : // try fast bitmap method first
57 0 : if( ImplFastEraseBitmap( *mpBuffer, aColor ) )
58 0 : return;
59 :
60 : // use the canonical method to clear the bitmap
61 0 : BitmapColor* pOldFillColor = mpFillColor ? new BitmapColor( *mpFillColor ) : NULL;
62 0 : const Point aPoint;
63 0 : const Rectangle aRect( aPoint, maBitmap.GetSizePixel() );
64 :
65 0 : SetFillColor( rColor );
66 0 : FillRect( aRect );
67 0 : delete mpFillColor;
68 0 : mpFillColor = pOldFillColor;
69 : }
70 :
71 0 : void BitmapWriteAccess::DrawLine( const Point& rStart, const Point& rEnd )
72 : {
73 0 : if( mpLineColor )
74 : {
75 0 : const BitmapColor& rLineColor = *mpLineColor;
76 : long nX, nY;
77 :
78 0 : if ( rStart.X() == rEnd.X() )
79 : {
80 : // Vertical Line
81 0 : const long nEndY = rEnd.Y();
82 :
83 0 : nX = rStart.X();
84 0 : nY = rStart.Y();
85 :
86 0 : if ( nEndY > nY )
87 : {
88 0 : for (; nY <= nEndY; nY++ )
89 0 : SetPixel( nY, nX, rLineColor );
90 : }
91 : else
92 : {
93 0 : for (; nY >= nEndY; nY-- )
94 0 : SetPixel( nY, nX, rLineColor );
95 : }
96 : }
97 0 : else if ( rStart.Y() == rEnd.Y() )
98 : {
99 : // Horizontal Line
100 0 : const long nEndX = rEnd.X();
101 :
102 0 : nX = rStart.X();
103 0 : nY = rStart.Y();
104 :
105 0 : if ( nEndX > nX )
106 : {
107 0 : for (; nX <= nEndX; nX++ )
108 0 : SetPixel( nY, nX, rLineColor );
109 : }
110 : else
111 : {
112 0 : for (; nX >= nEndX; nX-- )
113 0 : SetPixel( nY, nX, rLineColor );
114 : }
115 : }
116 : else
117 : {
118 0 : const long nDX = labs( rEnd.X() - rStart.X() );
119 0 : const long nDY = labs( rEnd.Y() - rStart.Y() );
120 : long nX1;
121 : long nY1;
122 : long nX2;
123 : long nY2;
124 :
125 0 : if ( nDX >= nDY )
126 : {
127 0 : if ( rStart.X() < rEnd.X() )
128 : {
129 0 : nX1 = rStart.X();
130 0 : nY1 = rStart.Y();
131 0 : nX2 = rEnd.X();
132 0 : nY2 = rEnd.Y();
133 : }
134 : else
135 : {
136 0 : nX1 = rEnd.X();
137 0 : nY1 = rEnd.Y();
138 0 : nX2 = rStart.X();
139 0 : nY2 = rStart.Y();
140 : }
141 :
142 0 : const long nDYX = ( nDY - nDX ) << 1;
143 0 : const long nDY2 = nDY << 1;
144 0 : long nD = nDY2 - nDX;
145 0 : bool bPos = nY1 < nY2;
146 :
147 0 : for ( nX = nX1, nY = nY1; nX <= nX2; nX++ )
148 : {
149 0 : SetPixel( nY, nX, rLineColor );
150 :
151 0 : if ( nD < 0 )
152 0 : nD += nDY2;
153 : else
154 : {
155 0 : nD += nDYX;
156 :
157 0 : if ( bPos )
158 0 : nY++;
159 : else
160 0 : nY--;
161 : }
162 : }
163 : }
164 : else
165 : {
166 0 : if ( rStart.Y() < rEnd.Y() )
167 : {
168 0 : nX1 = rStart.X();
169 0 : nY1 = rStart.Y();
170 0 : nX2 = rEnd.X();
171 0 : nY2 = rEnd.Y();
172 : }
173 : else
174 : {
175 0 : nX1 = rEnd.X();
176 0 : nY1 = rEnd.Y();
177 0 : nX2 = rStart.X();
178 0 : nY2 = rStart.Y();
179 : }
180 :
181 0 : const long nDYX = ( nDX - nDY ) << 1;
182 0 : const long nDY2 = nDX << 1;
183 0 : long nD = nDY2 - nDY;
184 0 : bool bPos = nX1 < nX2;
185 :
186 0 : for ( nX = nX1, nY = nY1; nY <= nY2; nY++ )
187 : {
188 0 : SetPixel( nY, nX, rLineColor );
189 :
190 0 : if ( nD < 0 )
191 0 : nD += nDY2;
192 : else
193 : {
194 0 : nD += nDYX;
195 :
196 0 : if ( bPos )
197 0 : nX++;
198 : else
199 0 : nX--;
200 : }
201 : }
202 : }
203 : }
204 : }
205 0 : }
206 :
207 0 : void BitmapWriteAccess::FillRect( const Rectangle& rRect )
208 : {
209 0 : if( mpFillColor )
210 : {
211 0 : const BitmapColor& rFillColor = *mpFillColor;
212 0 : Point aPoint;
213 0 : Rectangle aRect( aPoint, maBitmap.GetSizePixel() );
214 :
215 0 : aRect.Intersection( rRect );
216 :
217 0 : if( !aRect.IsEmpty() )
218 : {
219 0 : const long nStartX = rRect.Left();
220 0 : const long nStartY = rRect.Top();
221 0 : const long nEndX = rRect.Right();
222 0 : const long nEndY = rRect.Bottom();
223 :
224 0 : for( long nY = nStartY; nY <= nEndY; nY++ )
225 0 : for( long nX = nStartX; nX <= nEndX; nX++ )
226 0 : SetPixel( nY, nX, rFillColor );
227 : }
228 : }
229 0 : }
230 :
231 0 : void BitmapWriteAccess::DrawRect( const Rectangle& rRect )
232 : {
233 0 : if( mpFillColor )
234 0 : FillRect( rRect );
235 :
236 0 : if( mpLineColor && ( !mpFillColor || ( *mpFillColor != *mpLineColor ) ) )
237 : {
238 0 : DrawLine( rRect.TopLeft(), rRect.TopRight() );
239 0 : DrawLine( rRect.TopRight(), rRect.BottomRight() );
240 0 : DrawLine( rRect.BottomRight(), rRect.BottomLeft() );
241 0 : DrawLine( rRect.BottomLeft(), rRect.TopLeft() );
242 : }
243 0 : }
244 :
245 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
