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<h1>qwt_layout_metrics.h</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">#ifndef QWT_LAYOUT_METRICS_H</span>
30
<a name="l00011"></a>00011 <span class="preprocessor"></span><span class="preprocessor">#define QWT_LAYOUT_METRICS_H</span>
31
<a name="l00012"></a>00012 <span class="preprocessor"></span>
32
<a name="l00013"></a>00013 <span class="preprocessor">#include <qsize.h></span>
33
<a name="l00014"></a>00014 <span class="preprocessor">#include <qrect.h></span>
34
<a name="l00015"></a>00015 <span class="preprocessor">#include "qwt_polygon.h"</span>
35
<a name="l00016"></a>00016 <span class="preprocessor">#include "qwt_global.h"</span>
36
<a name="l00017"></a>00017
37
<a name="l00018"></a>00018 <span class="keyword">class </span>QPainter;
38
<a name="l00019"></a>00019 <span class="keyword">class </span>QString;
39
<a name="l00020"></a>00020 <span class="keyword">class </span>QFontMetrics;
40
<a name="l00021"></a>00021 <span class="preprocessor">#if QT_VERSION < 0x040000</span>
41
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="keyword">class </span>QWMatrix;
42
<a name="l00023"></a>00023 <span class="preprocessor">#else</span>
43
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="keyword">class </span>QMatrix;
44
<a name="l00025"></a>00025 <span class="preprocessor">#endif</span>
45
<a name="l00026"></a>00026 <span class="preprocessor"></span><span class="keyword">class </span>QPaintDevice;
46
<a name="l00027"></a>00027
47
<a name="l00031"></a><a class="code" href="class_qwt_metrics_map.html">00031</a> <span class="keyword">class </span>QWT_EXPORT <a class="code" href="class_qwt_metrics_map.html">QwtMetricsMap</a>
48
<a name="l00032"></a>00032 {
49
<a name="l00033"></a>00033 <span class="keyword">public</span>:
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<a name="l00034"></a>00034 <a class="code" href="class_qwt_metrics_map.html">QwtMetricsMap</a>();
51
<a name="l00035"></a>00035
52
<a name="l00036"></a>00036 <span class="keywordtype">bool</span> isIdentity() <span class="keyword">const</span>;
53
<a name="l00037"></a>00037
54
<a name="l00038"></a>00038 <span class="keywordtype">void</span> setMetrics(<span class="keyword">const</span> QPaintDevice *layoutMetrics,
55
<a name="l00039"></a>00039 <span class="keyword">const</span> QPaintDevice *deviceMetrics);
56
<a name="l00040"></a>00040
57
<a name="l00041"></a>00041 <span class="keywordtype">int</span> layoutToDeviceX(<span class="keywordtype">int</span> x) <span class="keyword">const</span>;
58
<a name="l00042"></a>00042 <span class="keywordtype">int</span> deviceToLayoutX(<span class="keywordtype">int</span> x) <span class="keyword">const</span>;
59
<a name="l00043"></a>00043 <span class="keywordtype">int</span> screenToLayoutX(<span class="keywordtype">int</span> x) <span class="keyword">const</span>;
60
<a name="l00044"></a>00044 <span class="keywordtype">int</span> layoutToScreenX(<span class="keywordtype">int</span> x) <span class="keyword">const</span>;
61
<a name="l00045"></a>00045
62
<a name="l00046"></a>00046 <span class="keywordtype">int</span> layoutToDeviceY(<span class="keywordtype">int</span> y) <span class="keyword">const</span>;
63
<a name="l00047"></a>00047 <span class="keywordtype">int</span> deviceToLayoutY(<span class="keywordtype">int</span> y) <span class="keyword">const</span>;
64
<a name="l00048"></a>00048 <span class="keywordtype">int</span> screenToLayoutY(<span class="keywordtype">int</span> y) <span class="keyword">const</span>;
65
<a name="l00049"></a>00049 <span class="keywordtype">int</span> layoutToScreenY(<span class="keywordtype">int</span> y) <span class="keyword">const</span>;
66
<a name="l00050"></a>00050
67
<a name="l00051"></a>00051 QPoint layoutToDevice(<span class="keyword">const</span> QPoint &, <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
68
<a name="l00052"></a>00052 QPoint deviceToLayout(<span class="keyword">const</span> QPoint &, <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
69
<a name="l00053"></a>00053 QPoint screenToLayout(<span class="keyword">const</span> QPoint &) <span class="keyword">const</span>;
70
<a name="l00054"></a>00054 QPoint layoutToScreen(<span class="keyword">const</span> QPoint &point) <span class="keyword">const</span>;
71
<a name="l00055"></a>00055
72
<a name="l00056"></a>00056
73
<a name="l00057"></a>00057 QSize layoutToDevice(<span class="keyword">const</span> QSize &) <span class="keyword">const</span>;
74
<a name="l00058"></a>00058 QSize deviceToLayout(<span class="keyword">const</span> QSize &) <span class="keyword">const</span>;
75
<a name="l00059"></a>00059 QSize screenToLayout(<span class="keyword">const</span> QSize &) <span class="keyword">const</span>;
76
<a name="l00060"></a>00060 QSize layoutToScreen(<span class="keyword">const</span> QSize &) <span class="keyword">const</span>;
77
<a name="l00061"></a>00061
78
<a name="l00062"></a>00062 QRect layoutToDevice(<span class="keyword">const</span> QRect &, <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
79
<a name="l00063"></a>00063 QRect deviceToLayout(<span class="keyword">const</span> QRect &, <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
80
<a name="l00064"></a>00064 QRect screenToLayout(<span class="keyword">const</span> QRect &) <span class="keyword">const</span>;
81
<a name="l00065"></a>00065 QRect layoutToScreen(<span class="keyword">const</span> QRect &) <span class="keyword">const</span>;
82
<a name="l00066"></a>00066
83
<a name="l00067"></a>00067 QwtPolygon layoutToDevice(<span class="keyword">const</span> QwtPolygon &,
84
<a name="l00068"></a>00068 <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
85
<a name="l00069"></a>00069 QwtPolygon deviceToLayout(<span class="keyword">const</span> QwtPolygon &,
86
<a name="l00070"></a>00070 <span class="keyword">const</span> QPainter * = NULL) <span class="keyword">const</span>;
87
<a name="l00071"></a>00071
88
<a name="l00072"></a>00072 <span class="preprocessor">#if QT_VERSION < 0x040000</span>
89
<a name="l00073"></a>00073 <span class="preprocessor"></span> <span class="keyword">static</span> QwtPolygon translate(<span class="keyword">const</span> QWMatrix &, <span class="keyword">const</span> QwtPolygon &);
90
<a name="l00074"></a>00074 <span class="keyword">static</span> QRect translate(<span class="keyword">const</span> QWMatrix &, <span class="keyword">const</span> QRect &);
91
<a name="l00075"></a>00075 <span class="preprocessor">#else</span>
92
<a name="l00076"></a>00076 <span class="preprocessor"></span> <span class="keyword">static</span> QwtPolygon translate(<span class="keyword">const</span> QMatrix &, <span class="keyword">const</span> QwtPolygon &);
93
<a name="l00077"></a>00077 <span class="keyword">static</span> QRect translate(<span class="keyword">const</span> QMatrix &, <span class="keyword">const</span> QRect &);
94
<a name="l00078"></a>00078 <span class="preprocessor">#endif</span>
95
<a name="l00079"></a>00079 <span class="preprocessor"></span>
96
<a name="l00080"></a>00080 <span class="keyword">private</span>:
97
<a name="l00081"></a>00081 <span class="keywordtype">double</span> d_screenToLayoutX;
98
<a name="l00082"></a>00082 <span class="keywordtype">double</span> d_screenToLayoutY;
99
<a name="l00083"></a>00083
100
<a name="l00084"></a>00084 <span class="keywordtype">double</span> d_deviceToLayoutX;
101
<a name="l00085"></a>00085 <span class="keywordtype">double</span> d_deviceToLayoutY;
102
<a name="l00086"></a>00086 };
103
<a name="l00087"></a>00087
104
<a name="l00088"></a><a class="code" href="class_qwt_metrics_map.html#ed458d83b2d59f6f64e0a6d29a290275">00088</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_metrics_map.html#ed458d83b2d59f6f64e0a6d29a290275">QwtMetricsMap::isIdentity</a>()<span class="keyword"> const</span>
105
<a name="l00089"></a>00089 <span class="keyword"></span>{
106
<a name="l00090"></a>00090 <span class="keywordflow">return</span> d_deviceToLayoutX == 1.0 && d_deviceToLayoutY == 1.0;
107
<a name="l00091"></a>00091 }
108
<a name="l00092"></a>00092
109
<a name="l00093"></a><a class="code" href="class_qwt_metrics_map.html#2f77f9158506d7e21f95d17df19e6c56">00093</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#2f77f9158506d7e21f95d17df19e6c56">QwtMetricsMap::layoutToDeviceX</a>(<span class="keywordtype">int</span> x)<span class="keyword"> const</span>
110
<a name="l00094"></a>00094 <span class="keyword"></span>{
111
<a name="l00095"></a>00095 <span class="keywordflow">return</span> qRound(x / d_deviceToLayoutX);
112
<a name="l00096"></a>00096 }
113
<a name="l00097"></a>00097
114
<a name="l00098"></a><a class="code" href="class_qwt_metrics_map.html#524d8cc81e862c47bef26887703037d2">00098</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#524d8cc81e862c47bef26887703037d2">QwtMetricsMap::deviceToLayoutX</a>(<span class="keywordtype">int</span> x)<span class="keyword"> const</span>
115
<a name="l00099"></a>00099 <span class="keyword"></span>{
116
<a name="l00100"></a>00100 <span class="keywordflow">return</span> qRound(x * d_deviceToLayoutX);
117
<a name="l00101"></a>00101 }
118
<a name="l00102"></a>00102
119
<a name="l00103"></a><a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">00103</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">QwtMetricsMap::screenToLayoutX</a>(<span class="keywordtype">int</span> x)<span class="keyword"> const</span>
120
<a name="l00104"></a>00104 <span class="keyword"></span>{
121
<a name="l00105"></a>00105 <span class="keywordflow">return</span> qRound(x * d_screenToLayoutX);
122
<a name="l00106"></a>00106 }
123
<a name="l00107"></a>00107
124
<a name="l00108"></a><a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">00108</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">QwtMetricsMap::layoutToScreenX</a>(<span class="keywordtype">int</span> x)<span class="keyword"> const</span>
125
<a name="l00109"></a>00109 <span class="keyword"></span>{
126
<a name="l00110"></a>00110 <span class="keywordflow">return</span> qRound(x / d_screenToLayoutX);
127
<a name="l00111"></a>00111 }
128
<a name="l00112"></a>00112
129
<a name="l00113"></a><a class="code" href="class_qwt_metrics_map.html#6daa9dd815525565ad32b924a55f5fa0">00113</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#6daa9dd815525565ad32b924a55f5fa0">QwtMetricsMap::layoutToDeviceY</a>(<span class="keywordtype">int</span> y)<span class="keyword"> const</span>
130
<a name="l00114"></a>00114 <span class="keyword"></span>{
131
<a name="l00115"></a>00115 <span class="keywordflow">return</span> qRound(y / d_deviceToLayoutY);
132
<a name="l00116"></a>00116 }
133
<a name="l00117"></a>00117
134
<a name="l00118"></a><a class="code" href="class_qwt_metrics_map.html#66048ed9347d760d5e1d6beb3de28ee9">00118</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#66048ed9347d760d5e1d6beb3de28ee9">QwtMetricsMap::deviceToLayoutY</a>(<span class="keywordtype">int</span> y)<span class="keyword"> const</span>
135
<a name="l00119"></a>00119 <span class="keyword"></span>{
136
<a name="l00120"></a>00120 <span class="keywordflow">return</span> qRound(y * d_deviceToLayoutY);
137
<a name="l00121"></a>00121 }
138
<a name="l00122"></a>00122
139
<a name="l00123"></a><a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">00123</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">QwtMetricsMap::screenToLayoutY</a>(<span class="keywordtype">int</span> y)<span class="keyword"> const</span>
140
<a name="l00124"></a>00124 <span class="keyword"></span>{
141
<a name="l00125"></a>00125 <span class="keywordflow">return</span> qRound(y * d_screenToLayoutY);
142
<a name="l00126"></a>00126 }
143
<a name="l00127"></a>00127
144
<a name="l00128"></a><a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">00128</a> <span class="keyword">inline</span> <span class="keywordtype">int</span> <a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">QwtMetricsMap::layoutToScreenY</a>(<span class="keywordtype">int</span> y)<span class="keyword"> const</span>
145
<a name="l00129"></a>00129 <span class="keyword"></span>{
146
<a name="l00130"></a>00130 <span class="keywordflow">return</span> qRound(y / d_screenToLayoutY);
147
<a name="l00131"></a>00131 }
148
<a name="l00132"></a>00132
149
<a name="l00133"></a><a class="code" href="class_qwt_metrics_map.html#eebdf604d985e200d8fc8cdd40df39b3">00133</a> <span class="keyword">inline</span> QSize <a class="code" href="class_qwt_metrics_map.html#f54f053fcfcb7dc595725a3caa3fb433">QwtMetricsMap::layoutToDevice</a>(<span class="keyword">const</span> QSize &size)<span class="keyword"> const</span>
150
<a name="l00134"></a>00134 <span class="keyword"></span>{
151
<a name="l00135"></a>00135 <span class="keywordflow">return</span> QSize(<a class="code" href="class_qwt_metrics_map.html#2f77f9158506d7e21f95d17df19e6c56">layoutToDeviceX</a>(size.width()),
152
<a name="l00136"></a>00136 <a class="code" href="class_qwt_metrics_map.html#6daa9dd815525565ad32b924a55f5fa0">layoutToDeviceY</a>(size.height()));
153
<a name="l00137"></a>00137 }
154
<a name="l00138"></a>00138
155
<a name="l00139"></a><a class="code" href="class_qwt_metrics_map.html#7e2ef6b4f255eb6b384ab0fdd2bcac61">00139</a> <span class="keyword">inline</span> QSize <a class="code" href="class_qwt_metrics_map.html#6fc1ff27a1faf1736c28a72ac46e2c63">QwtMetricsMap::deviceToLayout</a>(<span class="keyword">const</span> QSize &size)<span class="keyword"> const</span>
156
<a name="l00140"></a>00140 <span class="keyword"></span>{
157
<a name="l00141"></a>00141 <span class="keywordflow">return</span> QSize(<a class="code" href="class_qwt_metrics_map.html#524d8cc81e862c47bef26887703037d2">deviceToLayoutX</a>(size.width()),
158
<a name="l00142"></a>00142 <a class="code" href="class_qwt_metrics_map.html#66048ed9347d760d5e1d6beb3de28ee9">deviceToLayoutY</a>(size.height()));
159
<a name="l00143"></a>00143 }
160
<a name="l00144"></a>00144
161
<a name="l00145"></a><a class="code" href="class_qwt_metrics_map.html#121b279b60244db1a4aed7f250c8be0a">00145</a> <span class="keyword">inline</span> QSize <a class="code" href="class_qwt_metrics_map.html#b201003ff9f1ecebfb6403be5f98a57c">QwtMetricsMap::screenToLayout</a>(<span class="keyword">const</span> QSize &size)<span class="keyword"> const</span>
162
<a name="l00146"></a>00146 <span class="keyword"></span>{
163
<a name="l00147"></a>00147 <span class="keywordflow">return</span> QSize(<a class="code" href="class_qwt_metrics_map.html#201cdd547c8572a45571e587e7e0d121">screenToLayoutX</a>(size.width()),
164
<a name="l00148"></a>00148 <a class="code" href="class_qwt_metrics_map.html#c6725a1a71c48bdc40844ad526ef8833">screenToLayoutY</a>(size.height()));
165
<a name="l00149"></a>00149 }
166
<a name="l00150"></a>00150
167
<a name="l00151"></a><a class="code" href="class_qwt_metrics_map.html#889d79ca034da4fd9679116575c44d64">00151</a> <span class="keyword">inline</span> QSize <a class="code" href="class_qwt_metrics_map.html#1ca11de58fd61315957ff62adea5af76">QwtMetricsMap::layoutToScreen</a>(<span class="keyword">const</span> QSize &size)<span class="keyword"> const</span>
168
<a name="l00152"></a>00152 <span class="keyword"></span>{
169
<a name="l00153"></a>00153 <span class="keywordflow">return</span> QSize(<a class="code" href="class_qwt_metrics_map.html#64c0e33e4904e968388d1c2c909f362b">layoutToScreenX</a>(size.width()),
170
<a name="l00154"></a>00154 <a class="code" href="class_qwt_metrics_map.html#5f493327a54ada7d07b5167c1a6c8f87">layoutToScreenY</a>(size.height()));
171
<a name="l00155"></a>00155 }
172
<a name="l00156"></a>00156
173
<a name="l00157"></a>00157 <span class="preprocessor">#endif</span>
174
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sat May 24 18:47:39 2008 for Qwt User's Guide by
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<a href="http://www.doxygen.org/index.html">
176
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.0 </small></address>
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qwt-5.1.1/doc/html/qwt__layout__metrics_8h-source.html
