qwt__counter_8cpp-source.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Qwt User's Guide: qwt_counter.cpp Source File</title><link href="doxygen.css" rel="stylesheet" type="text/css"><link href="tabs.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.6 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> </ul></div><h1>qwt_counter.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span><a name="l00002"></a>00002 <span class="comment"> * Qwt Widget Library</span><a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span><a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span><a name="l00005"></a>00005 <span class="comment"> *</span><a name="l00006"></a>00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span><a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span><a name="l00008"></a>00008 <span class="comment"> *****************************************************************************/</span><a name="l00009"></a>00009 <a name="l00010"></a>00010 <span class="comment">// vim: expandtab</span><a name="l00011"></a>00011 <a name="l00012"></a>00012 <span class="preprocessor">#include <qlayout.h></span><a name="l00013"></a>00013 <span class="preprocessor">#include <qlineedit.h></span><a name="l00014"></a>00014 <span class="preprocessor">#include <qvalidator.h></span><a name="l00015"></a>00015 <span class="preprocessor">#include <qevent.h></span><a name="l00016"></a>00016 <span class="preprocessor">#include <qstyle.h></span><a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_math.h"</span><a name="l00018"></a>00018 <span class="preprocessor">#include "qwt_counter.h"</span><a name="l00019"></a>00019 <span class="preprocessor">#include "qwt_arrow_button.h"</span><a name="l00020"></a>00020 <a name="l00021"></a>00021 <span class="keyword">class </span>QwtCounter::PrivateData<a name="l00022"></a>00022 {<a name="l00023"></a>00023 <span class="keyword">public</span>:<a name="l00024"></a>00024 PrivateData():<a name="l00025"></a>00025 <a class="code" href="class_qwt_counter.html#8817a2b253273d694b02a81feb76ef64">editable</a>(true)<a name="l00026"></a>00026 {<a name="l00027"></a>00027 increment[Button1] = 1;<a name="l00028"></a>00028 increment[Button2] = 10;<a name="l00029"></a>00029 increment[Button3] = 100;<a name="l00030"></a>00030 }<a name="l00031"></a>00031 <a name="l00032"></a>00032 <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a> *buttonDown[ButtonCnt];<a name="l00033"></a>00033 <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a> *buttonUp[ButtonCnt];<a name="l00034"></a>00034 QLineEdit *valueEdit;<a name="l00035"></a>00035 <a name="l00036"></a>00036 <span class="keywordtype">int</span> increment[ButtonCnt];<a name="l00037"></a>00037 <span class="keywordtype">int</span> nButtons;<a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="keywordtype">bool</span> <a class="code" href="class_qwt_counter.html#8817a2b253273d694b02a81feb76ef64">editable</a>;<a name="l00040"></a>00040 };<a name="l00041"></a>00041 <a name="l00050"></a><a class="code" href="class_qwt_counter.html#ee94cdbaf1f3d22e110fd3535dbca34a">00050</a> <a class="code" href="class_qwt_counter.html#ee94cdbaf1f3d22e110fd3535dbca34a">QwtCounter::QwtCounter</a>(QWidget *parent):<a name="l00051"></a>00051 QWidget(parent) <a name="l00052"></a>00052 {<a name="l00053"></a>00053 initCounter();<a name="l00054"></a>00054 }<a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00057"></a>00057 <span class="preprocessor"></span><a name="l00065"></a>00065 <a class="code" href="class_qwt_counter.html#ee94cdbaf1f3d22e110fd3535dbca34a">QwtCounter::QwtCounter</a>(QWidget *parent, <span class="keyword">const</span> <span class="keywordtype">char</span> *name):<a name="l00066"></a>00066 QWidget(parent, name) <a name="l00067"></a>00067 {<a name="l00068"></a>00068 initCounter();<a name="l00069"></a>00069 }<a name="l00070"></a>00070 <span class="preprocessor">#endif</span><a name="l00071"></a>00071 <span class="preprocessor"></span><a name="l00072"></a>00072 <span class="keywordtype">void</span> QwtCounter::initCounter()<a name="l00073"></a>00073 {<a name="l00074"></a>00074 d_data = <span class="keyword">new</span> PrivateData;<a name="l00075"></a>00075 <a name="l00076"></a>00076 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00077"></a>00077 <span class="preprocessor"></span> <span class="keyword">using namespace </span>Qt;<a name="l00078"></a>00078 <span class="preprocessor">#endif</span><a name="l00079"></a>00079 <span class="preprocessor"></span><a name="l00080"></a>00080 QHBoxLayout *layout = <span class="keyword">new</span> QHBoxLayout(<span class="keyword">this</span>);<a name="l00081"></a>00081 layout->setSpacing(0);<a name="l00082"></a>00082 layout->setMargin(0);<a name="l00083"></a>00083 <a name="l00084"></a>00084 <span class="keywordtype">int</span> i;<a name="l00085"></a>00085 <span class="keywordflow">for</span>(i = ButtonCnt - 1; i >= 0; i--)<a name="l00086"></a>00086 {<a name="l00087"></a>00087 <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a> *btn =<a name="l00088"></a>00088 <span class="keyword">new</span> <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a>(i+1, Qt::DownArrow,<span class="keyword">this</span>);<a name="l00089"></a>00089 btn->setFocusPolicy(NoFocus);<a name="l00090"></a>00090 btn->installEventFilter(<span class="keyword">this</span>);<a name="l00091"></a>00091 layout->addWidget(btn);<a name="l00092"></a>00092 <a name="l00093"></a>00093 connect(btn, SIGNAL(released()), SLOT(btnReleased()));<a name="l00094"></a>00094 connect(btn, SIGNAL(clicked()), SLOT(btnClicked()));<a name="l00095"></a>00095 <a name="l00096"></a>00096 d_data->buttonDown[i] = btn;<a name="l00097"></a>00097 }<a name="l00098"></a>00098 <a name="l00099"></a>00099 d_data->valueEdit = <span class="keyword">new</span> QLineEdit(<span class="keyword">this</span>);<a name="l00100"></a>00100 d_data->valueEdit->setReadOnly(<span class="keyword">false</span>);<a name="l00101"></a>00101 d_data->valueEdit->setValidator(<span class="keyword">new</span> QDoubleValidator(d_data->valueEdit));<a name="l00102"></a>00102 layout->addWidget(d_data->valueEdit);<a name="l00103"></a>00103 <a name="l00104"></a>00104 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00105"></a>00105 <span class="preprocessor"></span> connect( d_data->valueEdit, SIGNAL(editingFinished()), <a name="l00106"></a>00106 SLOT(textChanged()) );<a name="l00107"></a>00107 <span class="preprocessor">#else</span><a name="l00108"></a>00108 <span class="preprocessor"></span> connect( d_data->valueEdit, SIGNAL(returnPressed()), SLOT(textChanged()) );<a name="l00109"></a>00109 connect( d_data->valueEdit, SIGNAL(lostFocus()), SLOT(textChanged()) );<a name="l00110"></a>00110 <span class="preprocessor">#endif</span><a name="l00111"></a>00111 <span class="preprocessor"></span><a name="l00112"></a>00112 layout->setStretchFactor(d_data->valueEdit, 10);<a name="l00113"></a>00113 <a name="l00114"></a>00114 <span class="keywordflow">for</span>(i = 0; i < ButtonCnt; i++)<a name="l00115"></a>00115 {<a name="l00116"></a>00116 #<span class="keywordflow">if</span> QT_VERSION >= 0x040000<a name="l00117"></a>00117 <span class="keyword">using</span> <span class="keyword">namespace</span> Qt;<a name="l00118"></a>00118 <span class="preprocessor">#endif</span><a name="l00119"></a>00119 <span class="preprocessor"></span> <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a> *btn =<a name="l00120"></a>00120 <span class="keyword">new</span> <a class="code" href="class_qwt_arrow_button.html">QwtArrowButton</a>(i+1, Qt::UpArrow, <span class="keyword">this</span>);<a name="l00121"></a>00121 btn->setFocusPolicy(NoFocus);<a name="l00122"></a>00122 btn->installEventFilter(<span class="keyword">this</span>);<a name="l00123"></a>00123 layout->addWidget(btn);<a name="l00124"></a>00124 <a name="l00125"></a>00125 connect(btn, SIGNAL(released()), SLOT(btnReleased()));<a name="l00126"></a>00126 connect(btn, SIGNAL(clicked()), SLOT(btnClicked()));<a name="l00127"></a>00127 <a name="l00128"></a>00128 d_data->buttonUp[i] = btn;<a name="l00129"></a>00129 }<a name="l00130"></a>00130 <a name="l00131"></a>00131 setNumButtons(2);<a name="l00132"></a>00132 setRange(0.0,1.0,0.001);<a name="l00133"></a>00133 setValue(0.0);<a name="l00134"></a>00134 <a name="l00135"></a>00135 setSizePolicy(<a name="l00136"></a>00136 QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));<a name="l00137"></a>00137 <a name="l00138"></a>00138 setFocusProxy(d_data->valueEdit);<a name="l00139"></a>00139 setFocusPolicy(StrongFocus);<a name="l00140"></a>00140 }<a name="l00141"></a>00141 <a name="l00143"></a><a class="code" href="class_qwt_counter.html#6469133eb210b470023a3dcc735aec4d">00143</a> <a class="code" href="class_qwt_counter.html#6469133eb210b470023a3dcc735aec4d">QwtCounter::~QwtCounter</a>()<a name="l00144"></a>00144 {<a name="l00145"></a>00145 <span class="keyword">delete</span> d_data;<a name="l00146"></a>00146 }<a name="l00147"></a>00147 <a name="l00151"></a><a class="code" href="class_qwt_counter.html#19824b7542778b23372fb77fac75beb8">00151</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#19824b7542778b23372fb77fac75beb8">QwtCounter::polish</a>()<a name="l00152"></a>00152 {<a name="l00153"></a>00153 <span class="keyword">const</span> <span class="keywordtype">int</span> w = d_data->valueEdit->fontMetrics().width(<span class="stringliteral">"W"</span>) + 8;<a name="l00154"></a>00154 <a name="l00155"></a>00155 <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < ButtonCnt; i++ )<a name="l00156"></a>00156 {<a name="l00157"></a>00157 d_data->buttonDown[i]->setMinimumWidth(w);<a name="l00158"></a>00158 d_data->buttonUp[i]->setMinimumWidth(w);<a name="l00159"></a>00159 }<a name="l00160"></a>00160 <a name="l00161"></a>00161 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00162"></a>00162 <span class="preprocessor"></span> QWidget::polish();<a name="l00163"></a>00163 <span class="preprocessor">#endif</span><a name="l00164"></a>00164 <span class="preprocessor"></span>}<a name="l00165"></a>00165 <a name="l00167"></a>00167 <span class="keywordtype">void</span> QwtCounter::textChanged() <a name="l00168"></a>00168 {<a name="l00169"></a>00169 <span class="keywordflow">if</span> ( !d_data->editable ) <a name="l00170"></a>00170 <span class="keywordflow">return</span>;<a name="l00171"></a>00171 <a name="l00172"></a>00172 <span class="keywordtype">bool</span> converted = <span class="keyword">false</span>;<a name="l00173"></a>00173 <a name="l00174"></a>00174 <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="class_qwt_counter.html#121194fadd8cea929c1ac9509f27fe58">value</a> = d_data->valueEdit->text().toDouble(&converted);<a name="l00175"></a>00175 <span class="keywordflow">if</span> ( converted ) <a name="l00176"></a>00176 <a class="code" href="class_qwt_counter.html#429a2e986aa46c1231643df5d4c78970">setValue</a>( value );<a name="l00177"></a>00177 }<a name="l00178"></a>00178 <a name="l00185"></a><a class="code" href="class_qwt_counter.html#2d2f4bf2813d2aa30c2fb9ec7a90163c">00185</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_counter.html#2d2f4bf2813d2aa30c2fb9ec7a90163c">QwtCounter::setEditable</a>(<span class="keywordtype">bool</span> editable)<a name="l00186"></a>00186 {<a name="l00187"></a>00187 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00188"></a>00188 <span class="preprocessor"></span> <span class="keyword">using namespace </span>Qt;<a name="l00189"></a>00189 <span class="preprocessor">#endif</span><a name="l00190"></a>00190 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( editable == d_data->editable ) ⌨️ 快捷键说明
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