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<h1>qwt_layout_metrics.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
21
<a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span>
22
<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
23
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
24
<a name="l00005"></a>00005 <span class="comment"> * </span>
25
<a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
26
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
27
<a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span>
28
<a name="l00009"></a>00009
29
<a name="l00010"></a>00010 <span class="preprocessor">#include <qapplication.h></span>
30
<a name="l00011"></a>00011 <span class="preprocessor">#include <qpainter.h></span>
31
<a name="l00012"></a>00012 <span class="preprocessor">#if QT_VERSION < 0x040000</span>
32
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#include <qpaintdevicemetrics.h></span>
33
<a name="l00014"></a>00014 <span class="preprocessor">#include <qwmatrix.h></span>
34
<a name="l00015"></a>00015 <span class="preprocessor">#define QwtMatrix QWMatrix</span>
35
<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#else</span>
36
<a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#include <qmatrix.h></span>
37
<a name="l00018"></a>00018 <span class="preprocessor">#define QwtMatrix QMatrix</span>
38
<a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
39
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#include <qpaintdevice.h></span>
40
<a name="l00021"></a>00021 <span class="preprocessor">#include <qdesktopwidget.h></span>
41
<a name="l00022"></a>00022 <span class="preprocessor">#include "qwt_math.h"</span>
42
<a name="l00023"></a>00023 <span class="preprocessor">#include "qwt_polygon.h"</span>
43
<a name="l00024"></a>00024 <span class="preprocessor">#include "qwt_layout_metrics.h"</span>
44
<a name="l00025"></a>00025
45
<a name="l00026"></a>00026 <span class="keyword">static</span> QSize deviceDpi(<span class="keyword">const</span> QPaintDevice *device)
46
<a name="l00027"></a>00027 {
47
<a name="l00028"></a>00028 QSize dpi;
48
<a name="l00029"></a>00029 <span class="preprocessor">#if QT_VERSION < 0x040000</span>
49
<a name="l00030"></a>00030 <span class="preprocessor"></span> <span class="keyword">const</span> QPaintDeviceMetrics metrics(device);
50
<a name="l00031"></a>00031 dpi.setWidth(metrics.logicalDpiX());
51
<a name="l00032"></a>00032 dpi.setHeight(metrics.logicalDpiY());
52
<a name="l00033"></a>00033 <span class="preprocessor">#else</span>
53
<a name="l00034"></a>00034 <span class="preprocessor"></span> dpi.setWidth(device->logicalDpiX());
54
<a name="l00035"></a>00035 dpi.setHeight(device->logicalDpiY());
55
<a name="l00036"></a>00036 <span class="preprocessor">#endif</span>
56
<a name="l00037"></a>00037 <span class="preprocessor"></span>
57
<a name="l00038"></a>00038 <span class="keywordflow">return</span> dpi;
58
<a name="l00039"></a>00039 }
59
<a name="l00040"></a>00040
60
<a name="l00041"></a>00041 <span class="preprocessor">#if QT_VERSION < 0x040000</span>
61
<a name="l00042"></a>00042 <span class="preprocessor"></span>
62
<a name="l00043"></a>00043 <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keyword">const</span> QWMatrix &matrix(<span class="keyword">const</span> QPainter *painter)
63
<a name="l00044"></a>00044 {
64
<a name="l00045"></a>00045 <span class="keywordflow">return</span> painter->worldMatrix();
65
<a name="l00046"></a>00046 }
66
<a name="l00047"></a>00047 <span class="keyword">inline</span> <span class="keyword">static</span> QWMatrix invMatrix(<span class="keyword">const</span> QPainter *painter)
67
<a name="l00048"></a>00048 {
68
<a name="l00049"></a>00049 <span class="keywordflow">return</span> painter->worldMatrix().invert();
69
<a name="l00050"></a>00050 }
70
<a name="l00051"></a>00051
71
<a name="l00052"></a>00052 <span class="preprocessor">#else // QT_VERSION >= 0x040000</span>
72
<a name="l00053"></a>00053 <span class="preprocessor"></span>
73
<a name="l00054"></a>00054 <span class="keyword">inline</span> <span class="keyword">static</span> <span class="keyword">const</span> QMatrix &matrix(<span class="keyword">const</span> QPainter *painter)
74
<a name="l00055"></a>00055 {
75
<a name="l00056"></a>00056 <span class="keywordflow">return</span> painter->matrix();
76
<a name="l00057"></a>00057 }
77
<a name="l00058"></a>00058 <span class="keyword">inline</span> <span class="keyword">static</span> QMatrix invMatrix(<span class="keyword">const</span> QPainter *painter)
78
<a name="l00059"></a>00059 {
79
<a name="l00060"></a>00060 <span class="keywordflow">return</span> painter->matrix().inverted();
80
<a name="l00061"></a>00061 }
81
<a name="l00062"></a>00062
82
<a name="l00063"></a>00063 <span class="preprocessor">#endif</span>
83
<a name="l00064"></a>00064 <span class="preprocessor"></span>
84
<a name="l00065"></a><a class="code" href="class_qwt_metrics_map.html#4f3938efa354940cf3e505265ef95352">00065</a> <a class="code" href="class_qwt_metrics_map.html#4f3938efa354940cf3e505265ef95352">QwtMetricsMap::QwtMetricsMap</a>()
85
<a name="l00066"></a>00066 {
86
<a name="l00067"></a>00067 d_screenToLayoutX = d_screenToLayoutY =
87
<a name="l00068"></a>00068 d_deviceToLayoutX = d_deviceToLayoutY = 1.0;
88
<a name="l00069"></a>00069 }
89
<a name="l00070"></a>00070
90
<a name="l00071"></a><a class="code" href="class_qwt_metrics_map.html#5890baf34ffa9e2bcd18f5e559821ad0">00071</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_metrics_map.html#5890baf34ffa9e2bcd18f5e559821ad0">QwtMetricsMap::setMetrics</a>(<span class="keyword">const</span> QPaintDevice *layoutDevice,
91
<a name="l00072"></a>00072 <span class="keyword">const</span> QPaintDevice *paintDevice)
92
<a name="l00073"></a>00073 {
93
<a name="l00074"></a>00074 <span class="keyword">const</span> QSize screenDpi = deviceDpi(QApplication::desktop());
94
<a name="l00075"></a>00075 <span class="keyword">const</span> QSize layoutDpi = deviceDpi(layoutDevice);
95
<a name="l00076"></a>00076 <span class="keyword">const</span> QSize paintDpi = deviceDpi(paintDevice);
96
<a name="l00077"></a>00077
97
<a name="l00078"></a>00078 d_screenToLayoutX = double(layoutDpi.width()) /
98
<a name="l00079"></a>00079 <span class="keywordtype">double</span>(screenDpi.width());
99
<a name="l00080"></a>00080 d_screenToLayoutY = double(layoutDpi.height()) /
100
<a name="l00081"></a>00081 <span class="keywordtype">double</span>(screenDpi.height());
101
<a name="l00082"></a>00082
102
<a name="l00083"></a>00083 d_deviceToLayoutX = double(layoutDpi.width()) /
103
<a name="l00084"></a>00084 <span class="keywordtype">double</span>(paintDpi.width());
104
<a name="l00085"></a>00085 d_deviceToLayoutY = double(layoutDpi.height()) /
105
<a name="l00086"></a>00086 <span class="keywordtype">double</span>(paintDpi.height());
106
<a name="l00087"></a>00087 }
107
<a name="l00088"></a>00088
108
<a name="l00089"></a>00089 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
109
<a name="l00090"></a><a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">00090</a> <span class="preprocessor"></span>QPoint <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QPoint &point,
110
<a name="l00091"></a>00091 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
111
<a name="l00092"></a>00092 <span class="preprocessor">#else</span>
112
<a name="l00093"></a>00093 <span class="preprocessor"></span>QPoint <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QPoint &point,
113
<a name="l00094"></a>00094 <span class="keyword">const</span> QPainter *) const
114
<a name="l00095"></a>00095 <span class="preprocessor">#endif</span>
115
<a name="l00096"></a>00096 <span class="preprocessor"></span>{
116
<a name="l00097"></a>00097 <span class="keywordflow">if</span> ( isIdentity() )
117
<a name="l00098"></a>00098 <span class="keywordflow">return</span> point;
118
<a name="l00099"></a>00099
119
<a name="l00100"></a>00100 QPoint mappedPoint(point);
120
<a name="l00101"></a>00101
121
<a name="l00102"></a>00102 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
122
<a name="l00103"></a>00103 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
123
<a name="l00104"></a>00104 mappedPoint = matrix(painter).map(mappedPoint);
124
<a name="l00105"></a>00105 <span class="preprocessor">#endif</span>
125
<a name="l00106"></a>00106 <span class="preprocessor"></span>
126
<a name="l00107"></a>00107 mappedPoint.setX(layoutToDeviceX(mappedPoint.x()));
127
<a name="l00108"></a>00108 mappedPoint.setY(layoutToDeviceY(mappedPoint.y()));
128
<a name="l00109"></a>00109
129
<a name="l00110"></a>00110 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
130
<a name="l00111"></a>00111 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
131
<a name="l00112"></a>00112 mappedPoint = invMatrix(painter).map(mappedPoint);
132
<a name="l00113"></a>00113 <span class="preprocessor">#endif</span>
133
<a name="l00114"></a>00114 <span class="preprocessor"></span>
134
<a name="l00115"></a>00115 <span class="keywordflow">return</span> mappedPoint;
135
<a name="l00116"></a>00116 }
136
<a name="l00117"></a>00117
137
<a name="l00118"></a>00118 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
138
<a name="l00119"></a><a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">00119</a> <span class="preprocessor"></span>QPoint <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QPoint &point,
139
<a name="l00120"></a>00120 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
140
<a name="l00121"></a>00121 <span class="preprocessor">#else</span>
141
<a name="l00122"></a>00122 <span class="preprocessor"></span>QPoint <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QPoint &point,
142
<a name="l00123"></a>00123 <span class="keyword">const</span> QPainter *) const
143
<a name="l00124"></a>00124 <span class="preprocessor">#endif</span>
144
<a name="l00125"></a>00125 <span class="preprocessor"></span>{
145
<a name="l00126"></a>00126 <span class="keywordflow">if</span> ( isIdentity() )
146
<a name="l00127"></a>00127 <span class="keywordflow">return</span> point;
147
<a name="l00128"></a>00128
148
<a name="l00129"></a>00129 QPoint mappedPoint(point);
149
<a name="l00130"></a>00130
150
<a name="l00131"></a>00131 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
151
<a name="l00132"></a>00132 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
152
<a name="l00133"></a>00133 mappedPoint = matrix(painter).map(mappedPoint);
153
<a name="l00134"></a>00134 <span class="preprocessor">#endif</span>
154
<a name="l00135"></a>00135 <span class="preprocessor"></span>
155
<a name="l00136"></a>00136 mappedPoint.setX(deviceToLayoutX(mappedPoint.x()));
156
<a name="l00137"></a>00137 mappedPoint.setY(deviceToLayoutY(mappedPoint.y()));
157
<a name="l00138"></a>00138
158
<a name="l00139"></a>00139 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
159
<a name="l00140"></a>00140 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
160
<a name="l00141"></a>00141 mappedPoint = invMatrix(painter).map(mappedPoint);
161
<a name="l00142"></a>00142 <span class="preprocessor">#endif</span>
162
<a name="l00143"></a>00143 <span class="preprocessor"></span>
163
<a name="l00144"></a>00144 <span class="keywordflow">return</span> mappedPoint;
164
<a name="l00145"></a>00145 }
165
<a name="l00146"></a>00146
166
<a name="l00147"></a><a class="code" href="class_qwt_metrics_map.html#b201003ff9f1ecebfb6403be5f98a57c">00147</a> QPoint <a class="code" href="class_qwt_metrics_map.html#b201003ff9f1ecebfb6403be5f98a57c">QwtMetricsMap::screenToLayout</a>(<span class="keyword">const</span> QPoint &point)<span class="keyword"> const</span>
167
<a name="l00148"></a>00148 <span class="keyword"></span>{
168
<a name="l00149"></a>00149 <span class="keywordflow">if</span> ( d_screenToLayoutX == 1.0 && d_screenToLayoutY == 1.0 )
169
<a name="l00150"></a>00150 <span class="keywordflow">return</span> point;
170
<a name="l00151"></a>00151
171
<a name="l00152"></a>00152 <span class="keywordflow">return</span> QPoint(<a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">screenToLayoutX</a>(point.x()), <a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">screenToLayoutY</a>(point.y()));
172
<a name="l00153"></a>00153 }
173
<a name="l00154"></a>00154
174
<a name="l00155"></a><a class="code" href="class_qwt_metrics_map.html#1ca11de58fd61315957ff62adea5af76">00155</a> QPoint <a class="code" href="class_qwt_metrics_map.html#1ca11de58fd61315957ff62adea5af76">QwtMetricsMap::layoutToScreen</a>(<span class="keyword">const</span> QPoint &point)<span class="keyword"> const</span>
175
<a name="l00156"></a>00156 <span class="keyword"></span>{
176
<a name="l00157"></a>00157 <span class="keywordflow">if</span> ( d_screenToLayoutX == 1.0 && d_screenToLayoutY == 1.0 )
177
<a name="l00158"></a>00158 <span class="keywordflow">return</span> point;
178
<a name="l00159"></a>00159
179
<a name="l00160"></a>00160 <span class="keywordflow">return</span> QPoint(<a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">layoutToScreenX</a>(point.x()), <a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">layoutToScreenY</a>(point.y()));
180
<a name="l00161"></a>00161 }
181
<a name="l00162"></a>00162
182
<a name="l00163"></a>00163 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
183
<a name="l00164"></a><a class="code" href="class_qwt_metrics_map.html#73a4425cf6b9e15df43eaca43a51b0e7">00164</a> <span class="preprocessor"></span>QRect <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QRect &rect,
184
<a name="l00165"></a>00165 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
185
<a name="l00166"></a>00166 <span class="preprocessor">#else</span>
186
<a name="l00167"></a>00167 <span class="preprocessor"></span>QRect <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QRect &rect,
187
<a name="l00168"></a>00168 <span class="keyword">const</span> QPainter *) const
188
<a name="l00169"></a>00169 <span class="preprocessor">#endif</span>
189
<a name="l00170"></a>00170 <span class="preprocessor"></span>{
190
<a name="l00171"></a>00171 <span class="keywordflow">if</span> ( isIdentity() )
191
<a name="l00172"></a>00172 <span class="keywordflow">return</span> rect;
192
<a name="l00173"></a>00173
193
<a name="l00174"></a>00174 QRect mappedRect(rect);
194
<a name="l00175"></a>00175 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
195
<a name="l00176"></a>00176 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
196
<a name="l00177"></a>00177 mappedRect = translate(matrix(painter), mappedRect);
197
<a name="l00178"></a>00178 <span class="preprocessor">#endif</span>
198
<a name="l00179"></a>00179 <span class="preprocessor"></span>
199
<a name="l00180"></a>00180 mappedRect = QRect(
200
<a name="l00181"></a>00181 layoutToDevice(mappedRect.topLeft()),
201
<a name="l00182"></a>00182 layoutToDevice(mappedRect.bottomRight())
202
<a name="l00183"></a>00183 );
203
<a name="l00184"></a>00184
204
<a name="l00185"></a>00185 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
205
<a name="l00186"></a>00186 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
206
<a name="l00187"></a>00187 mappedRect = translate(invMatrix(painter), mappedRect);
207
<a name="l00188"></a>00188 <span class="preprocessor">#endif</span>
208
<a name="l00189"></a>00189 <span class="preprocessor"></span>
209
<a name="l00190"></a>00190 <span class="keywordflow">return</span> mappedRect;
210
<a name="l00191"></a>00191 }
211
<a name="l00192"></a>00192
212
<a name="l00193"></a>00193 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
213
<a name="l00194"></a><a class="code" href="class_qwt_metrics_map.html#449a9454c88618207330a96de33d86cd">00194</a> <span class="preprocessor"></span>QRect <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QRect &rect,
214
<a name="l00195"></a>00195 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
215
<a name="l00196"></a>00196 <span class="preprocessor">#else</span>
216
<a name="l00197"></a>00197 <span class="preprocessor"></span>QRect <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QRect &rect,
217
<a name="l00198"></a>00198 <span class="keyword">const</span> QPainter *) const
218
<a name="l00199"></a>00199 <span class="preprocessor">#endif</span>
219
<a name="l00200"></a>00200 <span class="preprocessor"></span>{
220
<a name="l00201"></a>00201 <span class="keywordflow">if</span> ( isIdentity() )
221
<a name="l00202"></a>00202 <span class="keywordflow">return</span> rect;
222
<a name="l00203"></a>00203
223
<a name="l00204"></a>00204 QRect mappedRect(rect);
224
<a name="l00205"></a>00205 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
225
<a name="l00206"></a>00206 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
226
<a name="l00207"></a>00207 mappedRect = translate(matrix(painter), mappedRect);
227
<a name="l00208"></a>00208 <span class="preprocessor">#endif</span>
228
<a name="l00209"></a>00209 <span class="preprocessor"></span>
229
<a name="l00210"></a>00210 mappedRect = QRect(
230
<a name="l00211"></a>00211 deviceToLayout(mappedRect.topLeft()),
231
<a name="l00212"></a>00212 deviceToLayout(mappedRect.bottomRight())
232
<a name="l00213"></a>00213 );
233
<a name="l00214"></a>00214
234
<a name="l00215"></a>00215 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
235
<a name="l00216"></a>00216 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
236
<a name="l00217"></a>00217 mappedRect = translate(invMatrix(painter), mappedRect);
237
<a name="l00218"></a>00218 <span class="preprocessor">#endif</span>
238
<a name="l00219"></a>00219 <span class="preprocessor"></span>
239
<a name="l00220"></a>00220 <span class="keywordflow">return</span> mappedRect;
240
<a name="l00221"></a>00221 }
241
<a name="l00222"></a>00222
242
<a name="l00223"></a><a class="code" href="class_qwt_metrics_map.html#1bc5445fafa636f44754cb49edb8be80">00223</a> QRect <a class="code" href="class_qwt_metrics_map.html#b201003ff9f1ecebfb6403be5f98a57c">QwtMetricsMap::screenToLayout</a>(<span class="keyword">const</span> QRect &rect)<span class="keyword"> const</span>
243
<a name="l00224"></a>00224 <span class="keyword"></span>{
244
<a name="l00225"></a>00225 <span class="keywordflow">if</span> ( d_screenToLayoutX == 1.0 && d_screenToLayoutY == 1.0 )
245
<a name="l00226"></a>00226 <span class="keywordflow">return</span> rect;
246
<a name="l00227"></a>00227
247
<a name="l00228"></a>00228 <span class="keywordflow">return</span> QRect(<a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">screenToLayoutX</a>(rect.x()), <a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">screenToLayoutY</a>(rect.y()),
248
<a name="l00229"></a>00229 <a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">screenToLayoutX</a>(rect.width()), <a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">screenToLayoutY</a>(rect.height()));
249
<a name="l00230"></a>00230 }
250
<a name="l00231"></a>00231
251
<a name="l00232"></a><a class="code" href="class_qwt_metrics_map.html#65aac9d0e6528210dca47c350f71bd27">00232</a> QRect <a class="code" href="class_qwt_metrics_map.html#1ca11de58fd61315957ff62adea5af76">QwtMetricsMap::layoutToScreen</a>(<span class="keyword">const</span> QRect &rect)<span class="keyword"> const</span>
252
<a name="l00233"></a>00233 <span class="keyword"></span>{
253
<a name="l00234"></a>00234 <span class="keywordflow">if</span> ( d_screenToLayoutX == 1.0 && d_screenToLayoutY == 1.0 )
254
<a name="l00235"></a>00235 <span class="keywordflow">return</span> rect;
255
<a name="l00236"></a>00236
256
<a name="l00237"></a>00237 <span class="keywordflow">return</span> QRect(<a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">layoutToScreenX</a>(rect.x()), <a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">layoutToScreenY</a>(rect.y()),
257
<a name="l00238"></a>00238 <a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">layoutToScreenX</a>(rect.width()), <a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">layoutToScreenY</a>(rect.height()));
258
<a name="l00239"></a>00239 }
259
<a name="l00240"></a>00240
260
<a name="l00241"></a>00241 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
261
<a name="l00242"></a><a class="code" href="class_qwt_metrics_map.html#649c594fb52c6a122afd5fb93c4070c4">00242</a> <span class="preprocessor"></span>QwtPolygon <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QwtPolygon &pa,
262
<a name="l00243"></a>00243 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
263
<a name="l00244"></a>00244 <span class="preprocessor">#else</span>
264
<a name="l00245"></a>00245 <span class="preprocessor"></span>QwtPolygon <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QwtPolygon &pa,
265
<a name="l00246"></a>00246 <span class="keyword">const</span> QPainter *) const
266
<a name="l00247"></a>00247 <span class="preprocessor">#endif</span>
267
<a name="l00248"></a>00248 <span class="preprocessor"></span>{
268
<a name="l00249"></a>00249 <span class="keywordflow">if</span> ( isIdentity() )
269
<a name="l00250"></a>00250 <span class="keywordflow">return</span> pa;
270
<a name="l00251"></a>00251
271
<a name="l00252"></a>00252 QwtPolygon mappedPa(pa);
272
<a name="l00253"></a>00253
273
<a name="l00254"></a>00254 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
274
<a name="l00255"></a>00255 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
275
<a name="l00256"></a>00256 mappedPa = translate(matrix(painter), mappedPa);
276
<a name="l00257"></a>00257 <span class="preprocessor">#endif</span>
277
<a name="l00258"></a>00258 <span class="preprocessor"></span>
278
<a name="l00259"></a>00259 QwtMatrix m;
279
<a name="l00260"></a>00260 m.scale(1.0 / d_deviceToLayoutX, 1.0 / d_deviceToLayoutY);
280
<a name="l00261"></a>00261 mappedPa = translate(m, mappedPa);
281
<a name="l00262"></a>00262
282
<a name="l00263"></a>00263 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
283
<a name="l00264"></a>00264 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
284
<a name="l00265"></a>00265 mappedPa = translate(invMatrix(painter), mappedPa);
285
<a name="l00266"></a>00266 <span class="preprocessor">#endif</span>
286
<a name="l00267"></a>00267 <span class="preprocessor"></span>
287
<a name="l00268"></a>00268 <span class="keywordflow">return</span> mappedPa;
288
<a name="l00269"></a>00269 }
289
<a name="l00270"></a>00270
290
<a name="l00271"></a>00271 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
291
<a name="l00272"></a><a class="code" href="class_qwt_metrics_map.html#7b87013da256cc63d21e39cbdc3f68f9">00272</a> <span class="preprocessor"></span>QwtPolygon <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QwtPolygon &pa,
292
<a name="l00273"></a>00273 <span class="keyword">const</span> QPainter *painter) <span class="keyword">const</span>
293
<a name="l00274"></a>00274 <span class="preprocessor">#else</span>
294
<a name="l00275"></a>00275 <span class="preprocessor"></span>QwtPolygon <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QwtPolygon &pa,
295
<a name="l00276"></a>00276 <span class="keyword">const</span> QPainter *) const
296
<a name="l00277"></a>00277 <span class="preprocessor">#endif</span>
297
<a name="l00278"></a>00278 <span class="preprocessor"></span>{
298
<a name="l00279"></a>00279 <span class="keywordflow">if</span> ( isIdentity() )
299
<a name="l00280"></a>00280 <span class="keywordflow">return</span> pa;
300
<a name="l00281"></a>00281
301
<a name="l00282"></a>00282 QwtPolygon mappedPa(pa);
302
<a name="l00283"></a>00283
303
<a name="l00284"></a>00284 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
304
<a name="l00285"></a>00285 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
305
<a name="l00286"></a>00286 mappedPa = translate(matrix(painter), mappedPa);
306
<a name="l00287"></a>00287 <span class="preprocessor">#endif</span>
307
<a name="l00288"></a>00288 <span class="preprocessor"></span>
308
<a name="l00289"></a>00289 QwtMatrix m;
309
<a name="l00290"></a>00290 m.scale(d_deviceToLayoutX, d_deviceToLayoutY);
310
<a name="l00291"></a>00291 mappedPa = translate(m, mappedPa);
311
<a name="l00292"></a>00292
312
<a name="l00293"></a>00293 <span class="preprocessor">#ifndef QT_NO_TRANSFORMATIONS</span>
313
<a name="l00294"></a>00294 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( painter )
314
<a name="l00295"></a>00295 mappedPa = translate(invMatrix(painter), mappedPa);
315
<a name="l00296"></a>00296 <span class="preprocessor">#endif</span>
316
<a name="l00297"></a>00297 <span class="preprocessor"></span>
317
<a name="l00298"></a>00298 <span class="keywordflow">return</span> mappedPa;
318
<a name="l00299"></a>00299 }
319
<a name="l00300"></a>00300
320
<a name="l00309"></a><a class="code" href="class_qwt_metrics_map.html#e76d93ed750aedee3c66b5ea96729d8c">00309</a> QRect <a class="code" href="class_qwt_metrics_map.html#17f3e22f42b4f0e44096a9ac4e9e19fc">QwtMetricsMap::translate</a>(
321
<a name="l00310"></a>00310 <span class="keyword">const</span> QwtMatrix &m, <span class="keyword">const</span> QRect &rect)
322
<a name="l00311"></a>00311 {
323
<a name="l00312"></a>00312 <span class="keywordflow">return</span> m.mapRect(rect);
324
<a name="l00313"></a>00313 }
325
<a name="l00314"></a>00314
326
<a name="l00322"></a><a class="code" href="class_qwt_metrics_map.html#17f3e22f42b4f0e44096a9ac4e9e19fc">00322</a> QwtPolygon <a class="code" href="class_qwt_metrics_map.html#17f3e22f42b4f0e44096a9ac4e9e19fc">QwtMetricsMap::translate</a>(
327
<a name="l00323"></a>00323 <span class="keyword">const</span> QwtMatrix &m, <span class="keyword">const</span> QwtPolygon &pa)
328
<a name="l00324"></a>00324 {
329
<a name="l00325"></a>00325 <span class="keywordflow">return</span> m.map(pa);
330
<a name="l00326"></a>00326 }
331
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Mar 22 16:54:07 2009 for Qwt User's Guide by
332
<a href="http://www.doxygen.org/index.html">
333
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.0 </small></address>
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qwt-5.1.2/doc/html/qwt__layout__metrics_8cpp-source.html
