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 <vcl/outdev.hxx>
21 :
22 : #include "gridmerg.hxx"
23 :
24 : //------------------------------------------------------------------
25 :
26 0 : ScGridMerger::ScGridMerger( OutputDevice* pOutDev, long nOnePixelX, long nOnePixelY ) :
27 : pDev( pOutDev ),
28 : nOneX( nOnePixelX ),
29 : nOneY( nOnePixelY ),
30 : nCount( 0 ),
31 0 : bVertical( false )
32 : {
33 : // optimize (DrawGrid) only for pixel MapMode,
34 : // to avoid rounding errors
35 :
36 0 : bOptimize = ( pDev->GetMapMode().GetMapUnit() == MAP_PIXEL );
37 0 : }
38 :
39 0 : ScGridMerger::~ScGridMerger()
40 : {
41 0 : Flush();
42 0 : }
43 :
44 0 : void ScGridMerger::AddLine( long nStart, long nEnd, long nPos )
45 : {
46 0 : if ( nCount )
47 : {
48 : // not first line - test fix position
49 : // more than one previous line - test distance
50 :
51 0 : if ( nStart != nFixStart || nEnd != nFixEnd )
52 : {
53 0 : if ( nCount == 1 && nPos == nVarStart &&
54 : ( nStart == nFixEnd ||
55 : nStart == nFixEnd + ( bVertical ? nOneY : nOneX ) ) )
56 : {
57 : // additional optimization: extend connected lines
58 : // keep nCount at 1
59 0 : nFixEnd = nEnd;
60 : }
61 : else
62 0 : Flush();
63 : }
64 0 : else if ( nCount == 1 )
65 : {
66 0 : nVarDiff = nPos - nVarStart;
67 0 : ++nCount;
68 : }
69 0 : else if ( nPos != nVarStart + nCount * nVarDiff ) //! keep VarEnd?
70 0 : Flush();
71 : else
72 0 : ++nCount;
73 : }
74 :
75 0 : if ( !nCount )
76 : {
77 : // first line (or flushed above) - just store
78 :
79 0 : nFixStart = nStart;
80 0 : nFixEnd = nEnd;
81 0 : nVarStart = nPos;
82 0 : nVarDiff = 0;
83 0 : nCount = 1;
84 : }
85 0 : }
86 :
87 0 : void ScGridMerger::AddHorLine( long nX1, long nX2, long nY )
88 : {
89 0 : if ( bOptimize )
90 : {
91 0 : if ( bVertical )
92 : {
93 0 : Flush();
94 0 : bVertical = false;
95 : }
96 0 : AddLine( nX1, nX2, nY );
97 : }
98 : else
99 0 : pDev->DrawLine( Point( nX1, nY ), Point( nX2, nY ) );
100 0 : }
101 :
102 0 : void ScGridMerger::AddVerLine( long nX, long nY1, long nY2 )
103 : {
104 0 : if ( bOptimize )
105 : {
106 0 : if ( !bVertical )
107 : {
108 0 : Flush();
109 0 : bVertical = sal_True;
110 : }
111 0 : AddLine( nY1, nY2, nX );
112 : }
113 : else
114 0 : pDev->DrawLine( Point( nX, nY1 ), Point( nX, nY2 ) );
115 0 : }
116 :
117 0 : void ScGridMerger::Flush()
118 : {
119 0 : if (nCount)
120 : {
121 0 : if (bVertical)
122 : {
123 0 : if ( nCount == 1 )
124 0 : pDev->DrawLine( Point( nVarStart, nFixStart ), Point( nVarStart, nFixEnd ) );
125 : else
126 : {
127 0 : long nVarEnd = nVarStart + ( nCount - 1 ) * nVarDiff;
128 0 : if ( nVarDiff < 0 )
129 : {
130 : // nVarDiff is negative in RTL layout mode
131 : // Change the positions so DrawGrid is called with a positive distance
132 : // (nVarStart / nVarDiff can be modified, aren't used after Flush)
133 :
134 0 : nVarDiff = -nVarDiff;
135 0 : long nTemp = nVarStart;
136 0 : nVarStart = nVarEnd;
137 0 : nVarEnd = nTemp;
138 : }
139 : pDev->DrawGrid( Rectangle( nVarStart, nFixStart, nVarEnd, nFixEnd ),
140 : Size( nVarDiff, nFixEnd - nFixStart ),
141 0 : GRID_VERTLINES );
142 : }
143 : }
144 : else
145 : {
146 0 : if ( nCount == 1 )
147 0 : pDev->DrawLine( Point( nFixStart, nVarStart ), Point( nFixEnd, nVarStart ) );
148 : else
149 : {
150 0 : long nVarEnd = nVarStart + ( nCount - 1 ) * nVarDiff;
151 : pDev->DrawGrid( Rectangle( nFixStart, nVarStart, nFixEnd, nVarEnd ),
152 : Size( nFixEnd - nFixStart, nVarDiff ),
153 0 : GRID_HORZLINES );
154 : }
155 : }
156 0 : nCount = 0;
157 : }
158 0 : }
159 :
160 :
161 :
162 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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