📄 qwt__panner_8cpp-source.html
字号:
<!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_panner.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_panner.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 <qpainter.h></span><a name="l00013"></a>00013 <span class="preprocessor">#include <qpixmap.h></span><a name="l00014"></a>00014 <span class="preprocessor">#include <qevent.h></span><a name="l00015"></a>00015 <span class="preprocessor">#include <qframe.h></span><a name="l00016"></a>00016 <span class="preprocessor">#include <qcursor.h></span><a name="l00017"></a>00017 <span class="preprocessor">#include "qwt_panner.h"</span><a name="l00018"></a>00018 <a name="l00019"></a>00019 <span class="keyword">class </span>QwtPanner::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 button(Qt::LeftButton),<a name="l00024"></a>00024 buttonState(Qt::NoButton),<a name="l00025"></a>00025 abortKey(Qt::Key_Escape),<a name="l00026"></a>00026 abortKeyState(Qt::NoButton),<a name="l00027"></a>00027 #ifndef QT_NO_CURSOR<a name="l00028"></a>00028 <a class="code" href="class_qwt_panner.html#05a9ded33442da7f18c30bd06d45b55b">cursor</a>(NULL),<a name="l00029"></a>00029 restoreCursor(NULL),<a name="l00030"></a>00030 #endif<a name="l00031"></a>00031 <a class="code" href="class_qwt_panner.html#7b0bae829d1ee12208ab8722d52d15a1">isEnabled</a>(false)<a name="l00032"></a>00032 {<a name="l00033"></a>00033 }<a name="l00034"></a>00034 <a name="l00035"></a>00035 ~PrivateData()<a name="l00036"></a>00036 {<a name="l00037"></a>00037 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00038"></a>00038 <span class="preprocessor"></span> <span class="keyword">delete</span> <a class="code" href="class_qwt_panner.html#05a9ded33442da7f18c30bd06d45b55b">cursor</a>;<a name="l00039"></a>00039 <span class="keyword">delete</span> restoreCursor;<a name="l00040"></a>00040 <span class="preprocessor">#endif</span><a name="l00041"></a>00041 <span class="preprocessor"></span> }<a name="l00042"></a>00042 <a name="l00043"></a>00043 <span class="keywordtype">int</span> button;<a name="l00044"></a>00044 <span class="keywordtype">int</span> buttonState;<a name="l00045"></a>00045 <span class="keywordtype">int</span> abortKey;<a name="l00046"></a>00046 <span class="keywordtype">int</span> abortKeyState;<a name="l00047"></a>00047 <a name="l00048"></a>00048 QPoint initialPos;<a name="l00049"></a>00049 QPoint pos;<a name="l00050"></a>00050 <a name="l00051"></a>00051 QPixmap pixmap;<a name="l00052"></a>00052 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00053"></a>00053 <span class="preprocessor"></span> QCursor *<a class="code" href="class_qwt_panner.html#05a9ded33442da7f18c30bd06d45b55b">cursor</a>;<a name="l00054"></a>00054 QCursor *restoreCursor;<a name="l00055"></a>00055 <span class="preprocessor">#endif</span><a name="l00056"></a>00056 <span class="preprocessor"></span> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_panner.html#7b0bae829d1ee12208ab8722d52d15a1">isEnabled</a>;<a name="l00057"></a>00057 };<a name="l00058"></a>00058 <a name="l00064"></a><a class="code" href="class_qwt_panner.html#f5482be26d69a64c3880653265240736">00064</a> <a class="code" href="class_qwt_panner.html#f5482be26d69a64c3880653265240736">QwtPanner::QwtPanner</a>(QWidget *parent):<a name="l00065"></a>00065 QWidget(parent)<a name="l00066"></a>00066 {<a name="l00067"></a>00067 d_data = <span class="keyword">new</span> PrivateData();<a name="l00068"></a>00068 <a name="l00069"></a>00069 <span class="preprocessor">#if QT_VERSION >= 0x040000</span><a name="l00070"></a>00070 <span class="preprocessor"></span> setAttribute(Qt::WA_TransparentForMouseEvents);<a name="l00071"></a>00071 setAttribute(Qt::WA_NoSystemBackground);<a name="l00072"></a>00072 <span class="preprocessor">#if 0</span><a name="l00073"></a>00073 <span class="preprocessor"></span> setAttribute(Qt::WA_PaintOnScreen);<a name="l00074"></a>00074 <span class="preprocessor">#endif</span><a name="l00075"></a>00075 <span class="preprocessor"></span> setFocusPolicy(Qt::NoFocus);<a name="l00076"></a>00076 <span class="preprocessor">#else</span><a name="l00077"></a>00077 <span class="preprocessor"></span> setBackgroundMode(Qt::NoBackground);<a name="l00078"></a>00078 setFocusPolicy(QWidget::NoFocus);<a name="l00079"></a>00079 <span class="preprocessor">#endif</span><a name="l00080"></a>00080 <span class="preprocessor"></span> hide();<a name="l00081"></a>00081 <a name="l00082"></a>00082 <a class="code" href="class_qwt_panner.html#43e06c262c945fc7faeb729539bbde58">setEnabled</a>(<span class="keyword">true</span>);<a name="l00083"></a>00083 }<a name="l00084"></a>00084 <a name="l00086"></a><a class="code" href="class_qwt_panner.html#19c9b9a08da05649f6d2ef5bf6fb391c">00086</a> <a class="code" href="class_qwt_panner.html#19c9b9a08da05649f6d2ef5bf6fb391c">QwtPanner::~QwtPanner</a>()<a name="l00087"></a>00087 {<a name="l00088"></a>00088 <span class="keyword">delete</span> d_data;<a name="l00089"></a>00089 }<a name="l00090"></a>00090 <a name="l00095"></a><a class="code" href="class_qwt_panner.html#a2b37fa4cb48abf82ae0308b3e5992c5">00095</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#a2b37fa4cb48abf82ae0308b3e5992c5">QwtPanner::setMouseButton</a>(<span class="keywordtype">int</span> button, <span class="keywordtype">int</span> buttonState)<a name="l00096"></a>00096 {<a name="l00097"></a>00097 d_data->button = button;<a name="l00098"></a>00098 d_data->buttonState = buttonState;<a name="l00099"></a>00099 }<a name="l00100"></a>00100 <a name="l00102"></a><a class="code" href="class_qwt_panner.html#a73f227e3337b0ff66da78ca42968d85">00102</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#a73f227e3337b0ff66da78ca42968d85">QwtPanner::getMouseButton</a>(<span class="keywordtype">int</span> &button, <span class="keywordtype">int</span> &buttonState)<span class="keyword"> const</span><a name="l00103"></a>00103 <span class="keyword"></span>{<a name="l00104"></a>00104 button = d_data->button;<a name="l00105"></a>00105 buttonState = d_data->buttonState;<a name="l00106"></a>00106 }<a name="l00107"></a>00107 <a name="l00112"></a><a class="code" href="class_qwt_panner.html#4545ea538c2a6946b1027f95cfb51c9f">00112</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#4545ea538c2a6946b1027f95cfb51c9f">QwtPanner::setAbortKey</a>(<span class="keywordtype">int</span> key, <span class="keywordtype">int</span> state)<a name="l00113"></a>00113 {<a name="l00114"></a>00114 d_data->abortKey = key;<a name="l00115"></a>00115 d_data->abortKeyState = state;<a name="l00116"></a>00116 }<a name="l00117"></a>00117 <a name="l00119"></a><a class="code" href="class_qwt_panner.html#c91ce9e6162515c710875e639f242119">00119</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#c91ce9e6162515c710875e639f242119">QwtPanner::getAbortKey</a>(<span class="keywordtype">int</span> &key, <span class="keywordtype">int</span> &state)<span class="keyword"> const</span><a name="l00120"></a>00120 <span class="keyword"></span>{<a name="l00121"></a>00121 key = d_data->abortKey;<a name="l00122"></a>00122 state = d_data->abortKeyState;<a name="l00123"></a>00123 }<a name="l00124"></a>00124 <a name="l00133"></a>00133 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00134"></a><a class="code" href="class_qwt_panner.html#c8b0625fe155fff0132df85727f54a3e">00134</a> <span class="preprocessor"></span><span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#c8b0625fe155fff0132df85727f54a3e">QwtPanner::setCursor</a>(<span class="keyword">const</span> QCursor &cursor)<a name="l00135"></a>00135 {<a name="l00136"></a>00136 d_data->cursor = <span class="keyword">new</span> QCursor(cursor);<a name="l00137"></a>00137 }<a name="l00138"></a>00138 <span class="preprocessor">#endif</span><a name="l00139"></a>00139 <span class="preprocessor"></span><a name="l00144"></a>00144 <span class="preprocessor">#ifndef QT_NO_CURSOR</span><a name="l00145"></a><a class="code" href="class_qwt_panner.html#05a9ded33442da7f18c30bd06d45b55b">00145</a> <span class="preprocessor"></span><span class="keyword">const</span> QCursor <a class="code" href="class_qwt_panner.html#05a9ded33442da7f18c30bd06d45b55b">QwtPanner::cursor</a>()<span class="keyword"> const</span><a name="l00146"></a>00146 <span class="keyword"></span>{<a name="l00147"></a>00147 <span class="keywordflow">if</span> ( d_data->cursor )<a name="l00148"></a>00148 <span class="keywordflow">return</span> *d_data->cursor;<a name="l00149"></a>00149 <a name="l00150"></a>00150 <span class="keywordflow">if</span> ( parentWidget() )<a name="l00151"></a>00151 <span class="keywordflow">return</span> parentWidget()->cursor();<a name="l00152"></a>00152 <a name="l00153"></a>00153 <span class="keywordflow">return</span> QCursor();<a name="l00154"></a>00154 }<a name="l00155"></a>00155 <span class="preprocessor">#endif</span><a name="l00156"></a>00156 <span class="preprocessor"></span><a name="l00166"></a><a class="code" href="class_qwt_panner.html#43e06c262c945fc7faeb729539bbde58">00166</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#43e06c262c945fc7faeb729539bbde58">QwtPanner::setEnabled</a>(<span class="keywordtype">bool</span> on)<a name="l00167"></a>00167 {<a name="l00168"></a>00168 <span class="keywordflow">if</span> ( d_data->isEnabled != on )<a name="l00169"></a>00169 {<a name="l00170"></a>00170 d_data->isEnabled = on;<a name="l00171"></a>00171 <a name="l00172"></a>00172 QWidget *w = parentWidget();<a name="l00173"></a>00173 <span class="keywordflow">if</span> ( w )<a name="l00174"></a>00174 {<a name="l00175"></a>00175 <span class="keywordflow">if</span> ( d_data->isEnabled )<a name="l00176"></a>00176 {<a name="l00177"></a>00177 w->installEventFilter(<span class="keyword">this</span>);<a name="l00178"></a>00178 }<a name="l00179"></a>00179 <span class="keywordflow">else</span><a name="l00180"></a>00180 {<a name="l00181"></a>00181 w->removeEventFilter(<span class="keyword">this</span>);<a name="l00182"></a>00182 hide();<a name="l00183"></a>00183 }<a name="l00184"></a>00184 }<a name="l00185"></a>00185 }<a name="l00186"></a>00186 }<a name="l00187"></a>00187 <a name="l00192"></a><a class="code" href="class_qwt_panner.html#7b0bae829d1ee12208ab8722d52d15a1">00192</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_panner.html#7b0bae829d1ee12208ab8722d52d15a1">QwtPanner::isEnabled</a>()<span class="keyword"> const</span><a name="l00193"></a>00193 <span class="keyword"></span>{<a name="l00194"></a>00194 <span class="keywordflow">return</span> d_data->isEnabled;<a name="l00195"></a>00195 }<a name="l00196"></a>00196 <a name="l00205"></a><a class="code" href="class_qwt_panner.html#cd76ea518bd9267a45115d2c6ce19353">00205</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_panner.html#cd76ea518bd9267a45115d2c6ce19353">QwtPanner::paintEvent</a>(QPaintEvent *pe)<a name="l00206"></a>00206 {<a name="l00207"></a>00207 QPixmap pm(size());<a name="l00208"></a>00208 <a name="l00209"></a>00209 QPainter painter(&pm);<a name="l00210"></a>00210 <a name="l00211"></a>00211 <span class="keyword">const</span> QColor bg =<a name="l00212"></a>00212 <span class="preprocessor">#if QT_VERSION < 0x040000</span><a name="l00213"></a>00213 <span class="preprocessor"></span> parentWidget()->palette().color(<a name="l00214"></a>00214 QPalette::Normal, QColorGroup::Background);<a name="l00215"></a>00215 <span class="preprocessor">#else</span><a name="l00216"></a>00216 <span class="preprocessor"></span> parentWidget()->palette().color(<a name="l00217"></a>00217 QPalette::Normal, QPalette::Background);<a name="l00218"></a>00218 <span class="preprocessor">#endif</span><a name="l00219"></a>00219 <span class="preprocessor"></span><a name="l00220"></a>00220 painter.setPen(Qt::NoPen);<a name="l00221"></a>00221 painter.setBrush(QBrush(bg));<a name="l00222"></a>00222 painter.drawRect(0, 0, pm.width(), pm.height());<a name="l00223"></a>00223 ⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -