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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_abstract_slider.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_abstract_slider.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="preprocessor">#include <qevent.h></span><a name="l00011"></a>00011 <span class="preprocessor">#include <qdatetime.h></span><a name="l00012"></a>00012 <span class="preprocessor">#include "qwt_abstract_slider.h"</span><a name="l00013"></a>00013 <span class="preprocessor">#include "qwt_math.h"</span><a name="l00014"></a>00014 <a name="l00015"></a>00015 <span class="preprocessor">#ifndef WHEEL_DELTA</span><a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#define WHEEL_DELTA 120</span><a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#endif</span><a name="l00018"></a>00018 <span class="preprocessor"></span><a name="l00019"></a>00019 <span class="keyword">class </span>QwtAbstractSlider::PrivateData<a name="l00020"></a>00020 {<a name="l00021"></a>00021 <span class="keyword">public</span>:<a name="l00022"></a>00022 PrivateData():<a name="l00023"></a>00023 <a class="code" href="class_qwt_abstract_slider.html#4a1b9e022180a8567f09632388002396">scrollMode</a>(ScrNone),<a name="l00024"></a>00024 <a class="code" href="class_qwt_abstract_slider.html#138397a755057932b5da72f526fc74e6">mouseOffset</a>(0.0),<a name="l00025"></a>00025 tracking(true),<a name="l00026"></a>00026 tmrID(0),<a name="l00027"></a>00027 updTime(150),<a name="l00028"></a>00028 <a class="code" href="class_qwt_abstract_slider.html#130105fc2001c53cea65f21b03f0b5db">mass</a>(0.0),<a name="l00029"></a>00029 readOnly(false)<a name="l00030"></a>00030 {<a name="l00031"></a>00031 }<a name="l00032"></a>00032 <a name="l00033"></a>00033 <span class="keywordtype">int</span> <a class="code" href="class_qwt_abstract_slider.html#4a1b9e022180a8567f09632388002396">scrollMode</a>;<a name="l00034"></a>00034 <span class="keywordtype">double</span> <a class="code" href="class_qwt_abstract_slider.html#138397a755057932b5da72f526fc74e6">mouseOffset</a>;<a name="l00035"></a>00035 <span class="keywordtype">int</span> direction;<a name="l00036"></a>00036 <span class="keywordtype">int</span> tracking;<a name="l00037"></a>00037 <a name="l00038"></a>00038 <span class="keywordtype">int</span> tmrID;<a name="l00039"></a>00039 <span class="keywordtype">int</span> updTime;<a name="l00040"></a>00040 <span class="keywordtype">int</span> timerTick;<a name="l00041"></a>00041 QTime time;<a name="l00042"></a>00042 <span class="keywordtype">double</span> speed;<a name="l00043"></a>00043 <span class="keywordtype">double</span> <a class="code" href="class_qwt_abstract_slider.html#130105fc2001c53cea65f21b03f0b5db">mass</a>;<a name="l00044"></a>00044 Qt::Orientation <a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">orientation</a>;<a name="l00045"></a>00045 <span class="keywordtype">bool</span> readOnly;<a name="l00046"></a>00046 };<a name="l00047"></a>00047 <a name="l00054"></a><a class="code" href="class_qwt_abstract_slider.html#5d23c0db6786757d7523b7fbfb3c34c9">00054</a> <a class="code" href="class_qwt_abstract_slider.html#5d23c0db6786757d7523b7fbfb3c34c9">QwtAbstractSlider::QwtAbstractSlider</a>(<a name="l00055"></a>00055 Qt::Orientation <a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">orientation</a>, QWidget *parent): <a name="l00056"></a>00056 QWidget(parent, NULL)<a name="l00057"></a>00057 {<a name="l00058"></a>00058 d_data = <span class="keyword">new</span> QwtAbstractSlider::PrivateData;<a name="l00059"></a>00059 d_data->orientation = orientation;<a name="l00060"></a>00060 <a name="l00061"></a>00061 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00062"></a>00062 <span class="preprocessor"></span> <span class="keyword">using namespace </span>Qt;<a name="l00063"></a>00063 <span class="preprocessor">#endif</span><a name="l00064"></a>00064 <span class="preprocessor"></span> setFocusPolicy(TabFocus);<a name="l00065"></a>00065 }<a name="l00066"></a>00066 <a name="l00068"></a><a class="code" href="class_qwt_abstract_slider.html#31b9e0314988b7d547c9ded625014bbb">00068</a> <a class="code" href="class_qwt_abstract_slider.html#31b9e0314988b7d547c9ded625014bbb">QwtAbstractSlider::~QwtAbstractSlider</a>()<a name="l00069"></a>00069 {<a name="l00070"></a>00070 <span class="keywordflow">if</span>(d_data->tmrID) <a name="l00071"></a>00071 killTimer(d_data->tmrID);<a name="l00072"></a>00072 <a name="l00073"></a>00073 <span class="keyword">delete</span> d_data;<a name="l00074"></a>00074 }<a name="l00075"></a>00075 <a name="l00085"></a><a class="code" href="class_qwt_abstract_slider.html#9cc63283a2d4f0bcbb67fd331629a318">00085</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#9cc63283a2d4f0bcbb67fd331629a318">QwtAbstractSlider::setReadOnly</a>(<span class="keywordtype">bool</span> readOnly)<a name="l00086"></a>00086 {<a name="l00087"></a>00087 d_data->readOnly = readOnly;<a name="l00088"></a>00088 update();<a name="l00089"></a>00089 }<a name="l00090"></a>00090 <a name="l00098"></a><a class="code" href="class_qwt_abstract_slider.html#040fd1fd03592c524314bf4b5539608d">00098</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_abstract_slider.html#040fd1fd03592c524314bf4b5539608d">QwtAbstractSlider::isReadOnly</a>()<span class="keyword"> const</span><a name="l00099"></a>00099 <span class="keyword"></span>{<a name="l00100"></a>00100 <span class="keywordflow">return</span> d_data->readOnly;<a name="l00101"></a>00101 }<a name="l00102"></a>00102 <a name="l00108"></a><a class="code" href="class_qwt_abstract_slider.html#6b0fdc50bfbb0a8bb40f0dc6bf493b2c">00108</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#6b0fdc50bfbb0a8bb40f0dc6bf493b2c">QwtAbstractSlider::setOrientation</a>(Qt::Orientation o)<a name="l00109"></a>00109 {<a name="l00110"></a>00110 d_data->orientation = o;<a name="l00111"></a>00111 }<a name="l00112"></a>00112 <a name="l00117"></a><a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">00117</a> Qt::Orientation <a class="code" href="class_qwt_abstract_slider.html#4d2521b9c31ec64b71d8e1771b156d88">QwtAbstractSlider::orientation</a>()<span class="keyword"> const</span><a name="l00118"></a>00118 <span class="keyword"></span>{<a name="l00119"></a>00119 <span class="keywordflow">return</span> d_data->orientation;<a name="l00120"></a>00120 }<a name="l00121"></a>00121 <a name="l00123"></a>00123 <a name="l00124"></a><a class="code" href="class_qwt_abstract_slider.html#b648229c972d0c3258d30b0c43eb5efc">00124</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#b648229c972d0c3258d30b0c43eb5efc">QwtAbstractSlider::stopMoving</a>() <a name="l00125"></a>00125 {<a name="l00126"></a>00126 <span class="keywordflow">if</span>(d_data->tmrID)<a name="l00127"></a>00127 {<a name="l00128"></a>00128 killTimer(d_data->tmrID);<a name="l00129"></a>00129 d_data->tmrID = 0;<a name="l00130"></a>00130 }<a name="l00131"></a>00131 }<a name="l00132"></a>00132 <a name="l00138"></a><a class="code" href="class_qwt_abstract_slider.html#945ba36e1b8e20d362083f6737b0601d">00138</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#945ba36e1b8e20d362083f6737b0601d">QwtAbstractSlider::setUpdateTime</a>(<span class="keywordtype">int</span> t) <a name="l00139"></a>00139 {<a name="l00140"></a>00140 <span class="keywordflow">if</span> (t < 50) <a name="l00141"></a>00141 t = 50;<a name="l00142"></a>00142 d_data->updTime = t;<a name="l00143"></a>00143 }<a name="l00144"></a>00144 <a name="l00145"></a>00145 <a name="l00147"></a><a class="code" href="class_qwt_abstract_slider.html#60e33a71d34b23e9ebefebaa24cdd8c2">00147</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_abstract_slider.html#60e33a71d34b23e9ebefebaa24cdd8c2">QwtAbstractSlider::mousePressEvent</a>(QMouseEvent *e) <a name="l00148"></a>00148 {<a name="l00149"></a>00149 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_abstract_slider.html#040fd1fd03592c524314bf4b5539608d">isReadOnly</a>() )<a name="l00150"></a>00150 {<a name="l00151"></a>00151 e->ignore();<a name="l00152"></a>00152 <span class="keywordflow">return</span>;<a name="l00153"></a>00153 }<a name="l00154"></a>00154 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_abstract_slider.html#87c750f098cb5f70306a7908339cb88e">isValid</a>() )<a name="l00155"></a>00155 <span class="keywordflow">return</span>;<a name="l00156"></a>00156 <a name="l00157"></a>00157 <span class="keyword">const</span> QPoint &p = e->pos();<a name="l00158"></a>00158 <a name="l00159"></a>00159 d_data->timerTick = 0;<a name="l00160"></a>00160 <a name="l00161"></a>00161 <a class="code" href="class_qwt_abstract_slider.html#dcb6819c88cfa27e9ea3d8828479ea0b">getScrollMode</a>(p, d_data->scrollMode, d_data->direction);<a name="l00162"></a>00162 <a class="code" href="class_qwt_abstract_slider.html#b648229c972d0c3258d30b0c43eb5efc">stopMoving</a>();<a name="l00163"></a>00163 <a name="l00164"></a>00164 <span class="keywordflow">switch</span>(d_data->scrollMode)<a name="l00165"></a>00165 {<a name="l00166"></a>00166 <span class="keywordflow">case</span> ScrPage:<a name="l00167"></a>00167 <span class="keywordflow">case</span> ScrTimer:<a name="l00168"></a>00168 d_data->mouseOffset = 0;<a name="l00169"></a>00169 d_data->tmrID = startTimer(qwtMax(250, 2 * d_data->updTime));<a name="l00170"></a>00170 <span class="keywordflow">break</span>;<a name="l00171"></a>00171 <a name="l00172"></a>00172 <span class="keywordflow">case</span> ScrMouse:<a name="l00173"></a>00173 d_data->time.start();<a name="l00174"></a>00174 d_data->speed = 0;<a name="l00175"></a>00175 d_data->mouseOffset = <a class="code" href="class_qwt_abstract_slider.html#6e26a993536813c2d9846a28f3c27aa7">getValue</a>(p) - <a class="code" href="class_qwt_double_range.html#7777cf257c812579c4891512f1b6cad0">value</a>();<a name="l00176"></a>00176 emit <a class="code" href="class_qwt_abstract_slider.html#fd92a0c79c113b3c5e9952d12cff80f5">sliderPressed</a>();<a name="l00177"></a>00177 <span class="keywordflow">break</span>;<a name="l00178"></a>00178 <a name="l00179"></a>00179 <span class="keywordflow">default</span>:<a name="l00180"></a>00180 d_data->mouseOffset = 0;<a name="l00181"></a>00181 d_data->direction = 0;<a name="l00182"></a>00182 <span class="keywordflow">break</span>;⌨️ 快捷键说明
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