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|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Qwt User's Guide: qwt_sldbase.cpp Source File</title>
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<h1>qwt_sldbase.cpp</h1><pre class="fragment"><div>00001 <span class="comment">/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************</span>
00002 <span class="comment"> * Qwt Widget Library</span>
00003 <span class="comment"> * Copyright (C) 1997 Josef Wilgen</span>
00004 <span class="comment"> * Copyright (C) 2002 Uwe Rathmann</span>
00005 <span class="comment"> * </span>
00006 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
00007 <span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span>
00008 <span class="comment"> *****************************************************************************/</span>
00009
00010 <span class="preprocessor">#include <qevent.h></span>
00011 <span class="preprocessor">#include "qwt_sldbase.h"</span>
00012 <span class="preprocessor">#include "<a class="code" href="qwt__math_8h.html">qwt_math.h</a>"</span>
00013
00014 <span class="preprocessor">#ifndef WHEEL_DELTA</span>
00015 <span class="preprocessor"></span><span class="preprocessor">#define WHEEL_DELTA 120</span>
00016 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
00017 <span class="preprocessor"></span>
<a name="l00019"></a><a class="code" href="class_qwt_slider_base.html#a0">00019</a> <a class="code" href="class_qwt_slider_base.html#a0">QwtSliderBase::QwtSliderBase</a>(Qt::Orientation orient,
00020 QWidget *parent, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, Qt::WFlags f):
00021 QWidget(parent, name, f),
00022 d_scrollMode(ScrNone),
00023 d_orientation(orient),
00024 d_readOnly(FALSE)
00025 {
00026 d_tmrID = 0;
00027 d_updTime = 150;
00028 d_mass = 0.0;
00029 d_tracking = TRUE;
00030 d_mouseOffset = 0.0;
00031 <a class="code" href="class_qwt_dbl_range.html#a2">setRange</a>(0.0,100.0, 1.0);
00032 <a class="code" href="class_qwt_slider_base.html#i0">setValue</a>(0.0);
00033
00034 setFocusPolicy(QWidget::TabFocus);
00035 }
00036
<a name="l00038"></a><a class="code" href="class_qwt_slider_base.html#a1">00038</a> <a class="code" href="class_qwt_slider_base.html#a1">QwtSliderBase::~QwtSliderBase</a>()
00039 {
00040 <span class="keywordflow">if</span>(d_tmrID)
00041 killTimer(d_tmrID);
00042 }
00043
<a name="l00053"></a><a class="code" href="class_qwt_slider_base.html#i3">00053</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#i3">QwtSliderBase::setReadOnly</a>(<span class="keywordtype">bool</span> readOnly)
00054 {
00055 d_readOnly = readOnly;
00056 update();
00057 }
00058
<a name="l00066"></a><a class="code" href="class_qwt_slider_base.html#a9">00066</a> <span class="keywordtype">bool</span> <a class="code" href="class_qwt_slider_base.html#a9">QwtSliderBase::isReadOnly</a>()<span class="keyword"> const</span>
00067 <span class="keyword"></span>{
00068 <span class="keywordflow">return</span> d_readOnly;
00069 }
00070
<a name="l00076"></a><a class="code" href="class_qwt_slider_base.html#a7">00076</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#a7">QwtSliderBase::setOrientation</a>(Orientation o)
00077 {
00078 d_orientation = o;
00079 }
00080
<a name="l00085"></a><a class="code" href="class_qwt_slider_base.html#a8">00085</a> Qt::Orientation <a class="code" href="class_qwt_slider_base.html#a8">QwtSliderBase::orientation</a>()<span class="keyword"> const</span>
00086 <span class="keyword"></span>{
00087 <span class="keywordflow">return</span> d_orientation;
00088 }
00089
00091
<a name="l00092"></a><a class="code" href="class_qwt_slider_base.html#a3">00092</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#a3">QwtSliderBase::stopMoving</a>()
00093 {
00094 <span class="keywordflow">if</span>(d_tmrID)
00095 {
00096 killTimer(d_tmrID);
00097 d_tmrID = 0;
00098 }
00099 }
00100
<a name="l00106"></a><a class="code" href="class_qwt_slider_base.html#a2">00106</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#a2">QwtSliderBase::setUpdateTime</a>(<span class="keywordtype">int</span> t)
00107 {
00108 <span class="keywordflow">if</span> (t < 50)
00109 t = 50;
00110 d_updTime = t;
00111 }
00112
00113
<a name="l00115"></a><a class="code" href="class_qwt_slider_base.html#b3">00115</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b3">QwtSliderBase::mousePressEvent</a>(QMouseEvent *e)
00116 {
00117 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>() )
00118 {
00119 <span class="preprocessor">#if QT_VERSION >= 300</span>
00120 <span class="preprocessor"></span> e->ignore();
00121 <span class="preprocessor">#endif</span>
00122 <span class="preprocessor"></span> <span class="keywordflow">return</span>;
00123 }
00124 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00125 <span class="keywordflow">return</span>;
00126
00127 <span class="keyword">const</span> QPoint &p = e->pos();
00128
00129 d_timerTick = 0;
00130
00131 <a class="code" href="class_qwt_slider_base.html#b9">getScrollMode</a>(p, d_scrollMode, d_direction);
00132 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00133
00134 <span class="keywordflow">switch</span>(d_scrollMode)
00135 {
00136 <span class="keywordflow">case</span> ScrPage:
00137 <span class="keywordflow">case</span> ScrTimer:
00138 d_mouseOffset = 0;
00139 d_tmrID = startTimer(qwtMax(250, 2 * d_updTime));
00140 <span class="keywordflow">break</span>;
00141
00142 <span class="keywordflow">case</span> ScrMouse:
00143 d_time.start();
00144 d_speed = 0;
00145 d_mouseOffset = <a class="code" href="class_qwt_slider_base.html#b8">getValue</a>(p) - <a class="code" href="class_qwt_dbl_range.html#a6">value</a>();
00146 emit <a class="code" href="class_qwt_slider_base.html#l1">sliderPressed</a>();
00147 <span class="keywordflow">break</span>;
00148
00149 <span class="keywordflow">default</span>:
00150 d_mouseOffset = 0;
00151 d_direction = 0;
00152 <span class="keywordflow">break</span>;
00153 }
00154 }
00155
00156
00158 <span class="keywordtype">void</span> QwtSliderBase::buttonReleased()
00159 {
00160 <span class="keywordflow">if</span> ((!d_tracking) || (<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() != <a class="code" href="class_qwt_dbl_range.html#b2">prevValue</a>()))
00161 emit <a class="code" href="class_qwt_slider_base.html#l0">valueChanged</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>());
00162 }
00163
00164
<a name="l00166"></a><a class="code" href="class_qwt_slider_base.html#b4">00166</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b4">QwtSliderBase::mouseReleaseEvent</a>(QMouseEvent *e)
00167 {
00168 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>() )
00169 {
00170 <span class="preprocessor">#if QT_VERSION >= 300</span>
00171 <span class="preprocessor"></span> e->ignore();
00172 <span class="preprocessor">#endif</span>
00173 <span class="preprocessor"></span> <span class="keywordflow">return</span>;
00174 }
00175 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00176 <span class="keywordflow">return</span>;
00177
00178 <span class="keyword">const</span> <span class="keywordtype">double</span> inc = <a class="code" href="class_qwt_dbl_range.html#a10">step</a>();
00179
00180 <span class="keywordflow">switch</span>(d_scrollMode)
00181 {
00182 <span class="keywordflow">case</span> ScrMouse:
00183 {
00184 <a class="code" href="class_qwt_slider_base.html#b0">setPosition</a>(e->pos());
00185 d_direction = 0;
00186 d_mouseOffset = 0;
00187 <span class="keywordflow">if</span> (d_mass > 0.0)
00188 {
00189 <span class="keyword">const</span> <span class="keywordtype">int</span> ms = d_time.elapsed();
00190 <span class="keywordflow">if</span> ((fabs(d_speed) > 0.0) && (ms < 50))
00191 d_tmrID = startTimer(d_updTime);
00192 }
00193 <span class="keywordflow">else</span>
00194 {
00195 d_scrollMode = ScrNone;
00196 buttonReleased();
00197 }
00198 emit <a class="code" href="class_qwt_slider_base.html#l2">sliderReleased</a>();
00199
00200 <span class="keywordflow">break</span>;
00201 }
00202
00203 <span class="keywordflow">case</span> ScrDirect:
00204 {
00205 <a class="code" href="class_qwt_slider_base.html#b0">setPosition</a>(e->pos());
00206 d_direction = 0;
00207 d_mouseOffset = 0;
00208 d_scrollMode = ScrNone;
00209 buttonReleased();
00210 <span class="keywordflow">break</span>;
00211 }
00212
00213 <span class="keywordflow">case</span> ScrPage:
00214 {
00215 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00216 <span class="keywordflow">if</span> (!d_timerTick)
00217 <a class="code" href="class_qwt_dbl_range.html#a15">QwtDblRange::incPages</a>(d_direction);
00218 d_timerTick = 0;
00219 buttonReleased();
00220 d_scrollMode = ScrNone;
00221 <span class="keywordflow">break</span>;
00222 }
00223
00224 <span class="keywordflow">case</span> ScrTimer:
00225 {
00226 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00227 <span class="keywordflow">if</span> (!d_timerTick)
00228 <a class="code" href="class_qwt_dbl_range.html#a16">QwtDblRange::fitValue</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() + <span class="keywordtype">double</span>(d_direction) * inc);
00229 d_timerTick = 0;
00230 buttonReleased();
00231 d_scrollMode = ScrNone;
00232 <span class="keywordflow">break</span>;
00233 }
00234
00235 <span class="keywordflow">default</span>:
00236 {
00237 d_scrollMode = ScrNone;
00238 buttonReleased();
00239 }
00240 }
00241 }
00242
00243
<a name="l00248"></a><a class="code" href="class_qwt_slider_base.html#b0">00248</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b0">QwtSliderBase::setPosition</a>(<span class="keyword">const</span> QPoint &p)
00249 {
00250 <a class="code" href="class_qwt_dbl_range.html#a16">QwtDblRange::fitValue</a>(<a class="code" href="class_qwt_slider_base.html#b8">getValue</a>(p) - d_mouseOffset);
00251 }
00252
00253
<a name="l00268"></a><a class="code" href="class_qwt_slider_base.html#a4">00268</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#a4">QwtSliderBase::setTracking</a>(<span class="keywordtype">bool</span> enable)
00269 {
00270 d_tracking = enable;
00271 }
00272
<a name="l00274"></a><a class="code" href="class_qwt_slider_base.html#b5">00274</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b5">QwtSliderBase::mouseMoveEvent</a>(QMouseEvent *e)
00275 {
00276 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>() )
00277 {
00278 <span class="preprocessor">#if QT_VERSION >= 300</span>
00279 <span class="preprocessor"></span> e->ignore();
00280 <span class="preprocessor">#endif</span>
00281 <span class="preprocessor"></span> <span class="keywordflow">return</span>;
00282 }
00283
00284 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00285 <span class="keywordflow">return</span>;
00286
00287 <span class="keywordflow">if</span> (d_scrollMode == ScrMouse )
00288 {
00289 <a class="code" href="class_qwt_slider_base.html#b0">setPosition</a>(e->pos());
00290 <span class="keywordflow">if</span> (d_mass > 0.0)
00291 {
00292 <span class="keywordtype">double</span> ms = double(d_time.elapsed());
00293 <span class="keywordflow">if</span> (ms < 1.0)
00294 ms = 1.0;
00295 d_speed = (<a class="code" href="class_qwt_dbl_range.html#b0">exactValue</a>() - <a class="code" href="class_qwt_dbl_range.html#b1">exactPrevValue</a>()) / ms;
00296 d_time.start();
00297 }
00298 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() != <a class="code" href="class_qwt_dbl_range.html#b2">prevValue</a>())
00299 emit <a class="code" href="class_qwt_slider_base.html#l3">sliderMoved</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>());
00300 }
00301 }
00302
<a name="l00304"></a><a class="code" href="class_qwt_slider_base.html#b7">00304</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b7">QwtSliderBase::wheelEvent</a>(QWheelEvent *e)
00305 {
00306 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>() )
00307 {
00308 <span class="preprocessor">#if QT_VERSION >= 300</span>
00309 <span class="preprocessor"></span> e->ignore();
00310 <span class="preprocessor">#endif</span>
00311 <span class="preprocessor"></span> <span class="keywordflow">return</span>;
00312 }
00313
00314 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00315 <span class="keywordflow">return</span>;
00316
00317 <span class="keywordtype">int</span> mode = ScrNone, direction = 0;
00318
00319 <span class="comment">// Give derived classes a chance to say ScrNone</span>
00320 <a class="code" href="class_qwt_slider_base.html#b9">getScrollMode</a>(e->pos(), mode, direction);
00321 <span class="keywordflow">if</span> ( mode != ScrNone )
00322 {
00323 <span class="keyword">const</span> <span class="keywordtype">int</span> inc = e->delta() / WHEEL_DELTA;
00324 <a class="code" href="class_qwt_dbl_range.html#a15">QwtDblRange::incPages</a>(inc);
00325 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() != <a class="code" href="class_qwt_dbl_range.html#b2">prevValue</a>())
00326 emit <a class="code" href="class_qwt_slider_base.html#l3">sliderMoved</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>());
00327 }
00328 }
00329
<a name="l00341"></a><a class="code" href="class_qwt_slider_base.html#b6">00341</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b6">QwtSliderBase::keyPressEvent</a>(QKeyEvent *e)
00342 {
00343 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a9">isReadOnly</a>() )
00344 {
00345 <span class="preprocessor">#if QT_VERSION >= 300</span>
00346 <span class="preprocessor"></span> e->ignore();
00347 <span class="preprocessor">#endif</span>
00348 <span class="preprocessor"></span> <span class="keywordflow">return</span>;
00349 }
00350
00351 <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_slider_base.html#a10">isValid</a>() )
00352 <span class="keywordflow">return</span>;
00353
00354 <span class="keywordtype">int</span> increment = 0;
00355 <span class="keywordflow">switch</span> ( e->key() )
00356 {
00357 <span class="keywordflow">case</span> Qt::Key_Down:
00358 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a8">orientation</a>() == Qt::Vertical )
00359 increment = -1;
00360 <span class="keywordflow">break</span>;
00361 <span class="keywordflow">case</span> Qt::Key_Up:
00362 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a8">orientation</a>() == Qt::Vertical )
00363 increment = 1;
00364 <span class="keywordflow">break</span>;
00365 <span class="keywordflow">case</span> Qt::Key_Left:
00366 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a8">orientation</a>() == Qt::Horizontal )
00367 increment = -1;
00368 <span class="keywordflow">break</span>;
00369 <span class="keywordflow">case</span> Qt::Key_Right:
00370 <span class="keywordflow">if</span> ( <a class="code" href="class_qwt_slider_base.html#a8">orientation</a>() == Qt::Horizontal )
00371 increment = 1;
00372 <span class="keywordflow">break</span>;
00373 <span class="keywordflow">default</span>:;
00374 <span class="preprocessor">#if QT_VERSION >= 300</span>
00375 <span class="preprocessor"></span> e->ignore();
00376 <span class="preprocessor">#endif</span>
00377 <span class="preprocessor"></span> }
00378
00379 <span class="keywordflow">if</span> ( increment != 0 )
00380 {
00381 <a class="code" href="class_qwt_dbl_range.html#a14">QwtDblRange::incValue</a>(increment);
00382 <span class="keywordflow">if</span> (<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() != <a class="code" href="class_qwt_dbl_range.html#b2">prevValue</a>())
00383 emit <a class="code" href="class_qwt_slider_base.html#l3">sliderMoved</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>());
00384 }
00385 }
00386
<a name="l00388"></a><a class="code" href="class_qwt_slider_base.html#b2">00388</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b2">QwtSliderBase::timerEvent</a>(QTimerEvent *)
00389 {
00390 <span class="keyword">const</span> <span class="keywordtype">double</span> inc = <a class="code" href="class_qwt_dbl_range.html#a10">step</a>();
00391
00392 <span class="keywordflow">switch</span> (d_scrollMode)
00393 {
00394 <span class="keywordflow">case</span> ScrMouse:
00395 {
00396 <span class="keywordflow">if</span> (d_mass > 0.0)
00397 {
00398 d_speed *= exp( - <span class="keywordtype">double</span>(d_updTime) * 0.001 / d_mass );
00399 <span class="keyword">const</span> <span class="keywordtype">double</span> newval =
00400 <a class="code" href="class_qwt_dbl_range.html#b0">exactValue</a>() + d_speed * double(d_updTime);
00401 <a class="code" href="class_qwt_dbl_range.html#a16">QwtDblRange::fitValue</a>(newval);
00402 <span class="comment">// stop if d_speed < one step per second</span>
00403 <span class="keywordflow">if</span> (fabs(d_speed) < 0.001 * fabs(<a class="code" href="class_qwt_dbl_range.html#a10">step</a>()))
00404 {
00405 d_speed = 0;
00406 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00407 buttonReleased();
00408 }
00409
00410 }
00411 <span class="keywordflow">else</span>
00412 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00413 <span class="keywordflow">break</span>;
00414 }
00415
00416 <span class="keywordflow">case</span> ScrPage:
00417 {
00418 <a class="code" href="class_qwt_dbl_range.html#a15">QwtDblRange::incPages</a>(d_direction);
00419 <span class="keywordflow">if</span> (!d_timerTick)
00420 {
00421 killTimer(d_tmrID);
00422 d_tmrID = startTimer(d_updTime);
00423 }
00424 <span class="keywordflow">break</span>;
00425 }
00426 <span class="keywordflow">case</span> ScrTimer:
00427 {
00428 <a class="code" href="class_qwt_dbl_range.html#a16">QwtDblRange::fitValue</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>() + <span class="keywordtype">double</span>(d_direction) * inc);
00429 <span class="keywordflow">if</span> (!d_timerTick)
00430 {
00431 killTimer(d_tmrID);
00432 d_tmrID = startTimer(d_updTime);
00433 }
00434 <span class="keywordflow">break</span>;
00435 }
00436 <span class="keywordflow">default</span>:
00437 {
00438 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00439 <span class="keywordflow">break</span>;
00440 }
00441 }
00442
00443 d_timerTick = 1;
00444 }
00445
00446
<a name="l00455"></a><a class="code" href="class_qwt_slider_base.html#b1">00455</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#b1">QwtSliderBase::valueChange</a>()
00456 {
00457 <span class="keywordflow">if</span> (d_tracking)
00458 emit <a class="code" href="class_qwt_slider_base.html#l0">valueChanged</a>(<a class="code" href="class_qwt_dbl_range.html#a6">value</a>());
00459 }
00460
<a name="l00478"></a><a class="code" href="class_qwt_slider_base.html#a5">00478</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#a5">QwtSliderBase::setMass</a>(<span class="keywordtype">double</span> val)
00479 {
00480 <span class="keywordflow">if</span> (val < 0.001)
00481 d_mass = 0.0;
00482 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (val > 100.0)
00483 d_mass = 100.0;
00484 <span class="keywordflow">else</span>
00485 d_mass = val;
00486 }
00487
<a name="l00492"></a><a class="code" href="class_qwt_slider_base.html#a6">00492</a> <span class="keywordtype">double</span> <a class="code" href="class_qwt_slider_base.html#a6">QwtSliderBase::mass</a>()<span class="keyword"> const</span>
00493 <span class="keyword"></span>{
00494 <span class="keywordflow">return</span> d_mass;
00495 }
00496
00497
<a name="l00506"></a><a class="code" href="class_qwt_slider_base.html#i0">00506</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#i0">QwtSliderBase::setValue</a>(<span class="keywordtype">double</span> val)
00507 {
00508 <span class="keywordflow">if</span> (d_scrollMode == ScrMouse)
00509 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00510 <a class="code" href="class_qwt_dbl_range.html#a5">QwtDblRange::setValue</a>(val);
00511 }
00512
00513
<a name="l00519"></a><a class="code" href="class_qwt_slider_base.html#i1">00519</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#i1">QwtSliderBase::fitValue</a>(<span class="keywordtype">double</span> val)
00520 {
00521 <span class="keywordflow">if</span> (d_scrollMode == ScrMouse)
00522 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00523 <a class="code" href="class_qwt_dbl_range.html#a16">QwtDblRange::fitValue</a>(val);
00524 }
00525
00526
<a name="l00531"></a><a class="code" href="class_qwt_slider_base.html#i2">00531</a> <span class="keywordtype">void</span> <a class="code" href="class_qwt_slider_base.html#i2">QwtSliderBase::incValue</a>(<span class="keywordtype">int</span> steps)
00532 {
00533 <span class="keywordflow">if</span> (d_scrollMode == ScrMouse)
00534 <a class="code" href="class_qwt_slider_base.html#a3">stopMoving</a>();
00535 <a class="code" href="class_qwt_dbl_range.html#a14">QwtDblRange::incValue</a>(steps);
00536 }
</div></pre><hr size="1"><address style="align: right;"><small>Generated on Tue Nov 16 21:12:21 2004 for Qwt User's Guide by
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