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<div class="title">QwtAbstractScaleDraw Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>A abstract base class for drawing scales.
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<a href="class_qwt_abstract_scale_draw.html#details">More...</a></p>
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<p><code>#include <<a class="el" href="qwt__abstract__scale__draw_8h_source.html">qwt_abstract_scale_draw.h</a>></code></p>
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Inheritance diagram for QwtAbstractScaleDraw:</div>
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<area shape="rect" id="node3" href="class_qwt_round_scale_draw.html" title="A class for drawing round scales." alt="" coords="216,80,360,107"/><area shape="rect" id="node9" href="class_qwt_scale_draw.html" title="A class for drawing scales." alt="" coords="393,80,500,107"/><area shape="rect" id="node7" href="class_qwt_compass_scale_draw.html" title="A special scale draw made for QwtCompass." alt="" coords="209,155,367,181"/><area shape="rect" id="node11" href="class_qwt_date_scale_draw.html" title="A class for drawing datetime scales." alt="" coords="391,155,523,181"/></map>
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Public Types</h2></td></tr>
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<tr class="memitem:a26215d06a4d48adf401d0aa05d4193c5"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> { <a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5a61a6c4f4dec2b089edfb655e2b21c3a2">Backbone</a> = 0x01,
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<a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5a1f23d080ce1229a0c4f70469e88acce0">Ticks</a> = 0x02,
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<a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5ad2709d7efbb6f1618f0a8a3b6cafae96">Labels</a> = 0x04
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}</td></tr>
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<tr class="separator:a26215d06a4d48adf401d0aa05d4193c5"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a0dd3ccdfa074fb6b1781b84ed2a4729a"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0dd3ccdfa074fb6b1781b84ed2a4729a"></a>
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typedef QFlags< <a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a0dd3ccdfa074fb6b1781b84ed2a4729a">ScaleComponents</a></td></tr>
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<tr class="memdesc:a0dd3ccdfa074fb6b1781b84ed2a4729a"><td class="mdescLeft"> </td><td class="mdescRight">Scale components. <br/></td></tr>
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<tr class="separator:a0dd3ccdfa074fb6b1781b84ed2a4729a"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:a19c944664a2e36f06ae71b745fbd442e"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a19c944664a2e36f06ae71b745fbd442e">QwtAbstractScaleDraw</a> ()</td></tr>
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<tr class="memdesc:a19c944664a2e36f06ae71b745fbd442e"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#a19c944664a2e36f06ae71b745fbd442e">More...</a><br/></td></tr>
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<tr class="memitem:adc4d3f491b28ee39d728a4a4a9cdd494"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="adc4d3f491b28ee39d728a4a4a9cdd494"></a>
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virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#adc4d3f491b28ee39d728a4a4a9cdd494">~QwtAbstractScaleDraw</a> ()</td></tr>
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<tr class="memdesc:adc4d3f491b28ee39d728a4a4a9cdd494"><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br/></td></tr>
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<tr class="separator:adc4d3f491b28ee39d728a4a4a9cdd494"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a4399aac94a294f5ed6c52114dde00d2f"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a4399aac94a294f5ed6c52114dde00d2f">setScaleDiv</a> (const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &s)</td></tr>
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<tr class="separator:a4399aac94a294f5ed6c52114dde00d2f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a82510027cd5bee269628c9d6302a19a9"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a82510027cd5bee269628c9d6302a19a9">scaleDiv</a> () const </td></tr>
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<tr class="memitem:a732d0e49c9092c48893b4f71cc7357db"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a732d0e49c9092c48893b4f71cc7357db">setTransformation</a> (<a class="el" href="class_qwt_transform.html">QwtTransform</a> *)</td></tr>
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<tr class="separator:a732d0e49c9092c48893b4f71cc7357db"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aac87f593525666a47a57d9e2b4f02c66"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#aac87f593525666a47a57d9e2b4f02c66">scaleMap</a> () const </td></tr>
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<tr class="separator:aac87f593525666a47a57d9e2b4f02c66"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae7488eb63ad73a2e69acb29ff069c904"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ae7488eb63ad73a2e69acb29ff069c904">scaleMap</a> ()</td></tr>
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<tr class="separator:ae7488eb63ad73a2e69acb29ff069c904"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:af975410588db6103f281e49d0b43c6a6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#af975410588db6103f281e49d0b43c6a6">enableComponent</a> (<a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a>, bool enable=true)</td></tr>
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<tr class="separator:af975410588db6103f281e49d0b43c6a6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a95d74d9eaa5520754295efb33a4db50f"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a95d74d9eaa5520754295efb33a4db50f">hasComponent</a> (<a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a>) const </td></tr>
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<tr class="separator:a95d74d9eaa5520754295efb33a4db50f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a7fed388e435aae791d61f48cc9ddf632"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a7fed388e435aae791d61f48cc9ddf632">setTickLength</a> (<a class="el" href="class_qwt_scale_div.html#af21aedaa886dd5e067cf63505838736c">QwtScaleDiv::TickType</a>, double length)</td></tr>
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<tr class="separator:a7fed388e435aae791d61f48cc9ddf632"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aa43034f7ad87c33e9790c730ed48c55d"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#aa43034f7ad87c33e9790c730ed48c55d">tickLength</a> (<a class="el" href="class_qwt_scale_div.html#af21aedaa886dd5e067cf63505838736c">QwtScaleDiv::TickType</a>) const </td></tr>
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<tr class="separator:aa43034f7ad87c33e9790c730ed48c55d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:afac6ad0e98fefd9d103366726542a055"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#afac6ad0e98fefd9d103366726542a055">maxTickLength</a> () const </td></tr>
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<tr class="separator:afac6ad0e98fefd9d103366726542a055"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae5bdaadb303510f7eb9dbec5c52f7a47"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ae5bdaadb303510f7eb9dbec5c52f7a47">setSpacing</a> (double margin)</td></tr>
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<tr class="memdesc:ae5bdaadb303510f7eb9dbec5c52f7a47"><td class="mdescLeft"> </td><td class="mdescRight">Set the spacing between tick and labels. <a href="#ae5bdaadb303510f7eb9dbec5c52f7a47">More...</a><br/></td></tr>
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<tr class="separator:ae5bdaadb303510f7eb9dbec5c52f7a47"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a93561d85e879402086f2607e45e89cc2"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a93561d85e879402086f2607e45e89cc2">spacing</a> () const </td></tr>
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<tr class="memdesc:a93561d85e879402086f2607e45e89cc2"><td class="mdescLeft"> </td><td class="mdescRight">Get the spacing. <a href="#a93561d85e879402086f2607e45e89cc2">More...</a><br/></td></tr>
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<tr class="separator:a93561d85e879402086f2607e45e89cc2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a098e1f813077c9bb0c5f83266035943a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a098e1f813077c9bb0c5f83266035943a">setPenWidth</a> (int width)</td></tr>
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<tr class="memdesc:a098e1f813077c9bb0c5f83266035943a"><td class="mdescLeft"> </td><td class="mdescRight">Specify the width of the scale pen. <a href="#a098e1f813077c9bb0c5f83266035943a">More...</a><br/></td></tr>
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<tr class="separator:a098e1f813077c9bb0c5f83266035943a"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a8933b8da6332a6d4badfa83e67b74865"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a8933b8da6332a6d4badfa83e67b74865">penWidth</a> () const </td></tr>
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<tr class="separator:a8933b8da6332a6d4badfa83e67b74865"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aca3c3a7499112f52616d0ee8518fa5a6"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#aca3c3a7499112f52616d0ee8518fa5a6">draw</a> (QPainter *, const QPalette &) const </td></tr>
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<tr class="memdesc:aca3c3a7499112f52616d0ee8518fa5a6"><td class="mdescLeft"> </td><td class="mdescRight">Draw the scale. <a href="#aca3c3a7499112f52616d0ee8518fa5a6">More...</a><br/></td></tr>
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<tr class="separator:aca3c3a7499112f52616d0ee8518fa5a6"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a4ff88bc827dd6c6ca9298de13483b61f"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_qwt_text.html">QwtText</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a4ff88bc827dd6c6ca9298de13483b61f">label</a> (double) const </td></tr>
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<tr class="memdesc:a4ff88bc827dd6c6ca9298de13483b61f"><td class="mdescLeft"> </td><td class="mdescRight">Convert a value into its representing label. <a href="#a4ff88bc827dd6c6ca9298de13483b61f">More...</a><br/></td></tr>
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<tr class="memitem:a87e21208e981457cde501054319c77e7"><td class="memItemLeft" align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a87e21208e981457cde501054319c77e7">extent</a> (const QFont &font) const =0</td></tr>
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<tr class="memitem:ac174255c334b995ca010a6964597d5f2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ac174255c334b995ca010a6964597d5f2">setMinimumExtent</a> (double)</td></tr>
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<tr class="memdesc:ac174255c334b995ca010a6964597d5f2"><td class="mdescLeft"> </td><td class="mdescRight">Set a minimum for the extent. <a href="#ac174255c334b995ca010a6964597d5f2">More...</a><br/></td></tr>
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<tr class="separator:ac174255c334b995ca010a6964597d5f2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a563f102ef1370ecdfdc47133fb0c78ec"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a563f102ef1370ecdfdc47133fb0c78ec">minimumExtent</a> () const </td></tr>
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<tr class="separator:a563f102ef1370ecdfdc47133fb0c78ec"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
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Protected Member Functions</h2></td></tr>
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<tr class="memitem:a31791e80bf07d23adbe500740aac5a58"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a31791e80bf07d23adbe500740aac5a58">drawTick</a> (QPainter *painter, double value, double len) const =0</td></tr>
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<tr class="memitem:a15994a6033e689c3acdb8d83ae4f2a1c"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a15994a6033e689c3acdb8d83ae4f2a1c">drawBackbone</a> (QPainter *painter) const =0</td></tr>
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<tr class="memitem:aa78dc8bf05a0224450c947af54128d8d"><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#aa78dc8bf05a0224450c947af54128d8d">drawLabel</a> (QPainter *painter, double value) const =0</td></tr>
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<tr class="memitem:a4ed95cd23c5d779c1b05aa5295409aa6"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a4ed95cd23c5d779c1b05aa5295409aa6">invalidateCache</a> ()</td></tr>
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<tr class="memitem:a5e703dcb115a51024f89f92e61c2c8d8"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_text.html">QwtText</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a5e703dcb115a51024f89f92e61c2c8d8">tickLabel</a> (const QFont &, double value) const </td></tr>
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<tr class="memdesc:a5e703dcb115a51024f89f92e61c2c8d8"><td class="mdescLeft"> </td><td class="mdescRight">Convert a value into its representing label and cache it. <a href="#a5e703dcb115a51024f89f92e61c2c8d8">More...</a><br/></td></tr>
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<tr class="separator:a5e703dcb115a51024f89f92e61c2c8d8"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>A abstract base class for drawing scales. </p>
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<p><a class="el" href="class_qwt_abstract_scale_draw.html" title="A abstract base class for drawing scales.">QwtAbstractScaleDraw</a> can be used to draw linear or logarithmic scales.</p>
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<p>After a scale division has been specified as a <a class="el" href="class_qwt_scale_div.html" title="A class representing a scale division.">QwtScaleDiv</a> object using <a class="el" href="class_qwt_abstract_scale_draw.html#a4399aac94a294f5ed6c52114dde00d2f">setScaleDiv()</a>, the scale can be drawn with the <a class="el" href="class_qwt_abstract_scale_draw.html#aca3c3a7499112f52616d0ee8518fa5a6" title="Draw the scale.">draw()</a> member. </p>
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</div><h2 class="groupheader">Member Enumeration Documentation</h2>
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<a class="anchor" id="a26215d06a4d48adf401d0aa05d4193c5"></a>
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<td class="memname">enum <a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">QwtAbstractScaleDraw::ScaleComponent</a></td>
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<p>Components of a scale </p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#af975410588db6103f281e49d0b43c6a6">enableComponent()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a95d74d9eaa5520754295efb33a4db50f">hasComponent</a> </dd></dl>
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<table class="fieldtable">
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><em><a class="anchor" id="a26215d06a4d48adf401d0aa05d4193c5a61a6c4f4dec2b089edfb655e2b21c3a2"></a>Backbone</em> </td><td class="fielddoc">
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<p>Backbone = the line where the ticks are located. </p>
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</td></tr>
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<tr><td class="fieldname"><em><a class="anchor" id="a26215d06a4d48adf401d0aa05d4193c5a1f23d080ce1229a0c4f70469e88acce0"></a>Ticks</em> </td><td class="fielddoc">
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<p>Ticks. </p>
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</td></tr>
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<tr><td class="fieldname"><em><a class="anchor" id="a26215d06a4d48adf401d0aa05d4193c5ad2709d7efbb6f1618f0a8a3b6cafae96"></a>Labels</em> </td><td class="fielddoc">
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<p>Labels. </p>
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</td></tr>
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</table>
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</div>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<a class="anchor" id="a19c944664a2e36f06ae71b745fbd442e"></a>
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<td class="memname">QwtAbstractScaleDraw::QwtAbstractScaleDraw </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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<p>Constructor. </p>
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<p>The range of the scale is initialized to [0, 100], The spacing (distance between ticks and labels) is set to 4, the tick lengths are set to 4,6 and 8 pixels </p>
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</div>
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</div>
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<h2 class="groupheader">Member Function Documentation</h2>
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<a class="anchor" id="aca3c3a7499112f52616d0ee8518fa5a6"></a>
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<td class="memname">void QwtAbstractScaleDraw::draw </td>
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<td>(</td>
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<td class="paramtype">QPainter * </td>
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<td class="paramname"><em>painter</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const QPalette & </td>
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<td class="paramname"><em>palette</em> </td>
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<td>)</td>
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<td></td><td> const</td>
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<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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<p>Draw the scale. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">painter</td><td>The painter</td></tr>
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<tr><td class="paramname">palette</td><td>Palette, text color is used for the labels, foreground color for ticks and backbone </td></tr>
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</dd>
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</dl>
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<td class="memname">virtual void QwtAbstractScaleDraw::drawBackbone </td>
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<td>(</td>
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<td class="paramtype">QPainter * </td>
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<td class="paramname"><em>painter</em></td><td>)</td>
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<td> const</td>
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</td>
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<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span> </td>
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<p>Draws the baseline of the scale </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">painter</td><td>Painter</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a31791e80bf07d23adbe500740aac5a58">drawTick()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#aa78dc8bf05a0224450c947af54128d8d">drawLabel()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#aa53015c17e2abb01b179473cc488f20c">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#a83ed97e96011d331939a3031df29f115">QwtRoundScaleDraw</a>.</p>
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<td class="memname">virtual void QwtAbstractScaleDraw::drawLabel </td>
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<td>(</td>
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<td class="paramtype">QPainter * </td>
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<td class="paramname"><em>painter</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
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<td>)</td>
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<td></td><td> const</td>
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<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span> </td>
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</div><div class="memdoc">
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<p>Draws the label for a major scale tick</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">painter</td><td>Painter </td></tr>
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<tr><td class="paramname">value</td><td>Value</td></tr>
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</table>
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</dd>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a31791e80bf07d23adbe500740aac5a58">drawTick()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a15994a6033e689c3acdb8d83ae4f2a1c">drawBackbone()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#afc02a11a03efde4ea239d77c4d7711f4">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#ad45ba2c90ac205bb9405c028d6498c0f">QwtRoundScaleDraw</a>.</p>
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<td class="memname">virtual void QwtAbstractScaleDraw::drawTick </td>
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<td>(</td>
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<td class="paramtype">QPainter * </td>
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<td class="paramname"><em>painter</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>value</em>, </td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>len</em> </td>
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<td>)</td>
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<td></td><td> const</td>
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<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span> </td>
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</div><div class="memdoc">
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<p>Draw a tick</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">painter</td><td>Painter </td></tr>
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<tr><td class="paramname">value</td><td>Value of the tick </td></tr>
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<tr><td class="paramname">len</td><td>Length of the tick</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a15994a6033e689c3acdb8d83ae4f2a1c">drawBackbone()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#aa78dc8bf05a0224450c947af54128d8d">drawLabel()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#a84badd947ddc95a462ec20fe64922b36">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#aff2f18e7e7cac42805724ab5b0f2aad7">QwtRoundScaleDraw</a>.</p>
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<td class="memname">void QwtAbstractScaleDraw::enableComponent </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> </td>
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<td class="paramname"><em>component</em>, </td>
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<td class="paramtype">bool </td>
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<td class="paramname"><em>enable</em> = <code>true</code> </td>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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<p>En/Disable a component of the scale</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">component</td><td>Scale component </td></tr>
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<tr><td class="paramname">enable</td><td>On/Off</td></tr>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a95d74d9eaa5520754295efb33a4db50f">hasComponent()</a> </dd></dl>
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<td class="memname">virtual double QwtAbstractScaleDraw::extent </td>
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<td>(</td>
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<td class="paramtype">const QFont & </td>
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<td class="paramname"><em>font</em></td><td>)</td>
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<td> const</td>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span> </td>
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<p>Calculate the extent</p>
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<p>The extent is the distance from the baseline to the outermost pixel of the scale draw in opposite to its orientation. It is at least <a class="el" href="class_qwt_abstract_scale_draw.html#a563f102ef1370ecdfdc47133fb0c78ec">minimumExtent()</a> pixels.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">font</td><td>Font used for drawing the tick labels </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Number of pixels</dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#ac174255c334b995ca010a6964597d5f2" title="Set a minimum for the extent.">setMinimumExtent()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a563f102ef1370ecdfdc47133fb0c78ec">minimumExtent()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#a1fa0cebc2b8f69dce72b0514ad7653f0">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#a786fd49ec94ab51bb75d7a2f495b2727">QwtRoundScaleDraw</a>.</p>
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<a class="anchor" id="a95d74d9eaa5520754295efb33a4db50f"></a>
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<td class="memname">bool QwtAbstractScaleDraw::hasComponent </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> </td>
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<td class="paramname"><em>component</em></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Check if a component is enabled</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">component</td><td>Component type </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>true, when component is enabled </dd></dl>
|
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#af975410588db6103f281e49d0b43c6a6">enableComponent()</a> </dd></dl>
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<a class="anchor" id="a4ed95cd23c5d779c1b05aa5295409aa6"></a>
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<div class="memitem">
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<div class="memproto">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">void QwtAbstractScaleDraw::invalidateCache </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">protected</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Invalidate the cache used by <a class="el" href="class_qwt_abstract_scale_draw.html#a5e703dcb115a51024f89f92e61c2c8d8" title="Convert a value into its representing label and cache it.">tickLabel()</a></p>
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<p>The cache is invalidated, when a new <a class="el" href="class_qwt_scale_div.html" title="A class representing a scale division.">QwtScaleDiv</a> is set. If the labels need to be changed. while the same <a class="el" href="class_qwt_scale_div.html" title="A class representing a scale division.">QwtScaleDiv</a> is set, <a class="el" href="class_qwt_abstract_scale_draw.html#a4ed95cd23c5d779c1b05aa5295409aa6">invalidateCache()</a> needs to be called manually. </p>
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</div>
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<a class="anchor" id="a4ff88bc827dd6c6ca9298de13483b61f"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="class_qwt_text.html">QwtText</a> QwtAbstractScaleDraw::label </td>
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<td>(</td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>value</em></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</td>
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<td class="mlabels-right">
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<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Convert a value into its representing label. </p>
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<p>The value is converted to a plain text using QLocale().toString(value). This method is often overloaded by applications to have individual labels.</p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">value</td><td>Value </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Label string. </dd></dl>
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<p>Reimplemented in <a class="el" href="class_qwt_date_scale_draw.html#a16207bc20afaaf6959f11cf0343da82c">QwtDateScaleDraw</a>, and <a class="el" href="class_qwt_compass_scale_draw.html#acb6bfc20d538242fec35b6902dcb8ab1">QwtCompassScaleDraw</a>.</p>
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<a class="anchor" id="afac6ad0e98fefd9d103366726542a055"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">double QwtAbstractScaleDraw::maxTickLength </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section return"><dt>Returns</dt><dd>Length of the longest tick</dd></dl>
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<p>Useful for layout calculations </p>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#aa43034f7ad87c33e9790c730ed48c55d">tickLength()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a7fed388e435aae791d61f48cc9ddf632">setTickLength()</a> </dd></dl>
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<a class="anchor" id="a563f102ef1370ecdfdc47133fb0c78ec"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<td class="memname">double QwtAbstractScaleDraw::minimumExtent </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Get the minimum extent </p>
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<dl class="section return"><dt>Returns</dt><dd>Minimum extent </dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a87e21208e981457cde501054319c77e7">extent()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#ac174255c334b995ca010a6964597d5f2" title="Set a minimum for the extent.">setMinimumExtent()</a> </dd></dl>
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</div>
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<a class="anchor" id="a8933b8da6332a6d4badfa83e67b74865"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">int QwtAbstractScaleDraw::penWidth </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section return"><dt>Returns</dt><dd>Scale pen width </dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a098e1f813077c9bb0c5f83266035943a" title="Specify the width of the scale pen.">setPenWidth()</a> </dd></dl>
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</div>
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</div>
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<a class="anchor" id="a82510027cd5bee269628c9d6302a19a9"></a>
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> & QwtAbstractScaleDraw::scaleDiv </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section return"><dt>Returns</dt><dd>scale division </dd></dl>
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</div>
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</div>
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<a class="anchor" id="aac87f593525666a47a57d9e2b4f02c66"></a>
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">const <a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & QwtAbstractScaleDraw::scaleMap </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section return"><dt>Returns</dt><dd>Map how to translate between scale and pixel values </dd></dl>
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</div>
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<a class="anchor" id="ae7488eb63ad73a2e69acb29ff069c904"></a>
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname"><a class="el" href="class_qwt_scale_map.html">QwtScaleMap</a> & QwtAbstractScaleDraw::scaleMap </td>
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<td>(</td>
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<td class="paramname"></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="section return"><dt>Returns</dt><dd>Map how to translate between scale and pixel values </dd></dl>
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</div>
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</div>
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<a class="anchor" id="ac174255c334b995ca010a6964597d5f2"></a>
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<div class="memproto">
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<table class="memname">
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<td class="memname">void QwtAbstractScaleDraw::setMinimumExtent </td>
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<td>(</td>
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<td class="paramtype">double </td>
|
|
<td class="paramname"><em>minExtent</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Set a minimum for the extent. </p>
|
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<p>The extent is calculated from the components of the scale draw. In situations, where the labels are changing and the layout depends on the extent (f.e scrolling a scale), setting an upper limit as minimum extent will avoid jumps of the layout.</p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
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<tr><td class="paramname">minExtent</td><td>Minimum extent</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a87e21208e981457cde501054319c77e7">extent()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a563f102ef1370ecdfdc47133fb0c78ec">minimumExtent()</a> </dd></dl>
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</div>
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<a class="anchor" id="a098e1f813077c9bb0c5f83266035943a"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void QwtAbstractScaleDraw::setPenWidth </td>
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<td>(</td>
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<td class="paramtype">int </td>
|
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<td class="paramname"><em>width</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Specify the width of the scale pen. </p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
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<tr><td class="paramname">width</td><td>Pen width </td></tr>
|
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</table>
|
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</dd>
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</dl>
|
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a8933b8da6332a6d4badfa83e67b74865">penWidth()</a> </dd></dl>
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</div>
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<a class="anchor" id="a4399aac94a294f5ed6c52114dde00d2f"></a>
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<table class="memname">
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<tr>
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<td class="memname">void QwtAbstractScaleDraw::setScaleDiv </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> & </td>
|
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<td class="paramname"><em>scaleDiv</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Change the scale division </p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
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<tr><td class="paramname">scaleDiv</td><td>New scale division </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a class="anchor" id="ae5bdaadb303510f7eb9dbec5c52f7a47"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void QwtAbstractScaleDraw::setSpacing </td>
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<td>(</td>
|
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<td class="paramtype">double </td>
|
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<td class="paramname"><em>spacing</em></td><td>)</td>
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<td></td>
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</tr>
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</div><div class="memdoc">
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<p>Set the spacing between tick and labels. </p>
|
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<p>The spacing is the distance between ticks and labels. The default spacing is 4 pixels.</p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">spacing</td><td>Spacing</td></tr>
|
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</table>
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</dd>
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</dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a93561d85e879402086f2607e45e89cc2" title="Get the spacing.">spacing()</a> </dd></dl>
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<a class="anchor" id="a7fed388e435aae791d61f48cc9ddf632"></a>
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<td class="memname">void QwtAbstractScaleDraw::setTickLength </td>
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<td>(</td>
|
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<td class="paramtype"><a class="el" href="class_qwt_scale_div.html#af21aedaa886dd5e067cf63505838736c">QwtScaleDiv::TickType</a> </td>
|
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<td class="paramname"><em>tickType</em>, </td>
|
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
|
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<td></td>
|
|
<td class="paramtype">double </td>
|
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<td class="paramname"><em>length</em> </td>
|
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</tr>
|
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<tr>
|
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<td></td>
|
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<td>)</td>
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<td></td><td></td>
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</table>
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</div><div class="memdoc">
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<p>Set the length of the ticks</p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
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<table class="params">
|
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<tr><td class="paramname">tickType</td><td>Tick type </td></tr>
|
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<tr><td class="paramname">length</td><td>New length</td></tr>
|
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</table>
|
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</dd>
|
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</dl>
|
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<dl class="section warning"><dt>Warning</dt><dd>the length is limited to [0..1000] </dd></dl>
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</div>
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<a class="anchor" id="a732d0e49c9092c48893b4f71cc7357db"></a>
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<td class="memname">void QwtAbstractScaleDraw::setTransformation </td>
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<td>(</td>
|
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<td class="paramtype"><a class="el" href="class_qwt_transform.html">QwtTransform</a> * </td>
|
|
<td class="paramname"><em>transformation</em></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Change the transformation of the scale </p>
|
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<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">transformation</td><td>New scale transformation </td></tr>
|
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</table>
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</dd>
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</dl>
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</div>
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<a class="anchor" id="a93561d85e879402086f2607e45e89cc2"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">double QwtAbstractScaleDraw::spacing </td>
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<td>(</td>
|
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<td class="paramname"></td><td>)</td>
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<td> const</td>
|
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Get the spacing. </p>
|
|
<p>The spacing is the distance between ticks and labels. The default spacing is 4 pixels.</p>
|
|
<dl class="section return"><dt>Returns</dt><dd>Spacing </dd></dl>
|
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#ae5bdaadb303510f7eb9dbec5c52f7a47" title="Set the spacing between tick and labels.">setSpacing()</a> </dd></dl>
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<a class="anchor" id="a5e703dcb115a51024f89f92e61c2c8d8"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="mlabels">
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<tr>
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<td class="mlabels-left">
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<table class="memname">
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<tr>
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<td class="memname">const <a class="el" href="class_qwt_text.html">QwtText</a> & QwtAbstractScaleDraw::tickLabel </td>
|
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<td>(</td>
|
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<td class="paramtype">const QFont & </td>
|
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<td class="paramname"><em>font</em>, </td>
|
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</tr>
|
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<tr>
|
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<td class="paramkey"></td>
|
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<td></td>
|
|
<td class="paramtype">double </td>
|
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<td class="paramname"><em>value</em> </td>
|
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</tr>
|
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<tr>
|
|
<td></td>
|
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<td>)</td>
|
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<td></td><td> const</td>
|
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</tr>
|
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</table>
|
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</td>
|
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<td class="mlabels-right">
|
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<span class="mlabels"><span class="mlabel">protected</span></span> </td>
|
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Convert a value into its representing label and cache it. </p>
|
|
<p>The conversion between value and label is called very often in the layout and painting code. Unfortunately the calculation of the label sizes might be slow (really slow for rich text in Qt4), so it's necessary to cache the labels.</p>
|
|
<dl class="params"><dt>Parameters</dt><dd>
|
|
<table class="params">
|
|
<tr><td class="paramname">font</td><td>Font </td></tr>
|
|
<tr><td class="paramname">value</td><td>Value</td></tr>
|
|
</table>
|
|
</dd>
|
|
</dl>
|
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<dl class="section return"><dt>Returns</dt><dd>Tick label </dd></dl>
|
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</div>
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</div>
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<a class="anchor" id="aa43034f7ad87c33e9790c730ed48c55d"></a>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">double QwtAbstractScaleDraw::tickLength </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="class_qwt_scale_div.html#af21aedaa886dd5e067cf63505838736c">QwtScaleDiv::TickType</a> </td>
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<td class="paramname"><em>tickType</em></td><td>)</td>
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<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Length of the ticks </dd></dl>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a7fed388e435aae791d61f48cc9ddf632">setTickLength()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#afac6ad0e98fefd9d103366726542a055">maxTickLength()</a> </dd></dl>
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