1017 lines
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1017 lines
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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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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
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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:af900d3a139451b70e6ce5acee5e2df7e"><td class="memItemLeft" align="right" valign="top">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#af900d3a139451b70e6ce5acee5e2df7e">ScaleComponents</a></td></tr>
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<tr class="separator:af900d3a139451b70e6ce5acee5e2df7e"><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="class_qwt_abstract_scale_draw.html#a19c944664a2e36f06ae71b745fbd442e">More...</a><br /></td></tr>
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<tr class="separator:a19c944664a2e36f06ae71b745fbd442e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:adc4d3f491b28ee39d728a4a4a9cdd494"><td class="memItemLeft" align="right" valign="top"><a 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:a149792f955cc3f05c16362338bcc98c4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a149792f955cc3f05c16362338bcc98c4">setScaleDiv</a> (const <a class="el" href="class_qwt_scale_div.html">QwtScaleDiv</a> &)</td></tr>
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<tr class="separator:a149792f955cc3f05c16362338bcc98c4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad15e796d2fd8bd1e2cfa66715bf58e2e"><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#ad15e796d2fd8bd1e2cfa66715bf58e2e">scaleDiv</a> () const</td></tr>
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<tr class="separator:ad15e796d2fd8bd1e2cfa66715bf58e2e"><td class="memSeparator" colspan="2"> </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:a2582c30e82f8977877ac8044253f1fb8"><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#a2582c30e82f8977877ac8044253f1fb8">scaleMap</a> () const</td></tr>
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<tr class="separator:a2582c30e82f8977877ac8044253f1fb8"><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:a8a69a890d349a9e03c145b20b5835e8a"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a8a69a890d349a9e03c145b20b5835e8a">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:a8a69a890d349a9e03c145b20b5835e8a"><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:a52fe17714fe96564b0d88af27e96e58f"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a52fe17714fe96564b0d88af27e96e58f">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:a52fe17714fe96564b0d88af27e96e58f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ab3713ea053eb3d6327b18a3d14c7b820"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ab3713ea053eb3d6327b18a3d14c7b820">maxTickLength</a> () const</td></tr>
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<tr class="separator:ab3713ea053eb3d6327b18a3d14c7b820"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a074675cd805656f0ae158f84745074af"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a074675cd805656f0ae158f84745074af">setSpacing</a> (double)</td></tr>
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<tr class="memdesc:a074675cd805656f0ae158f84745074af"><td class="mdescLeft"> </td><td class="mdescRight">Set the spacing between tick and labels. <a href="class_qwt_abstract_scale_draw.html#a074675cd805656f0ae158f84745074af">More...</a><br /></td></tr>
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<tr class="separator:a074675cd805656f0ae158f84745074af"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad3b290a76426a1a22a870e84c1655666"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ad3b290a76426a1a22a870e84c1655666">spacing</a> () const</td></tr>
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<tr class="memdesc:ad3b290a76426a1a22a870e84c1655666"><td class="mdescLeft"> </td><td class="mdescRight">Get the spacing. <a href="class_qwt_abstract_scale_draw.html#ad3b290a76426a1a22a870e84c1655666">More...</a><br /></td></tr>
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<tr class="separator:ad3b290a76426a1a22a870e84c1655666"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6401e26332d65433e0b881400a1ce03b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#a6401e26332d65433e0b881400a1ce03b">setPenWidthF</a> (qreal width)</td></tr>
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<tr class="memdesc:a6401e26332d65433e0b881400a1ce03b"><td class="mdescLeft"> </td><td class="mdescRight">Specify the width of the scale pen. <a href="class_qwt_abstract_scale_draw.html#a6401e26332d65433e0b881400a1ce03b">More...</a><br /></td></tr>
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<tr class="separator:a6401e26332d65433e0b881400a1ce03b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ad0e889e3a5b5af8adb0d6a507e7fbc95"><td class="memItemLeft" align="right" valign="top">qreal </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#ad0e889e3a5b5af8adb0d6a507e7fbc95">penWidthF</a> () const</td></tr>
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<tr class="separator:ad0e889e3a5b5af8adb0d6a507e7fbc95"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ac4442d7480db1288971e7eac15142467"><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#ac4442d7480db1288971e7eac15142467">draw</a> (QPainter *, const QPalette &) const</td></tr>
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<tr class="memdesc:ac4442d7480db1288971e7eac15142467"><td class="mdescLeft"> </td><td class="mdescRight">Draw the scale. <a href="class_qwt_abstract_scale_draw.html#ac4442d7480db1288971e7eac15142467">More...</a><br /></td></tr>
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<tr class="memitem:ac1d855f856b746559c41f4f06ec5442d"><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#ac1d855f856b746559c41f4f06ec5442d">label</a> (double) const</td></tr>
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<tr class="memdesc:ac1d855f856b746559c41f4f06ec5442d"><td class="mdescLeft"> </td><td class="mdescRight">Convert a value into its representing label. <a href="class_qwt_abstract_scale_draw.html#ac1d855f856b746559c41f4f06ec5442d">More...</a><br /></td></tr>
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<tr class="separator:ac1d855f856b746559c41f4f06ec5442d"><td class="memSeparator" colspan="2"> </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="class_qwt_abstract_scale_draw.html#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:abdd97b4bedda111df8208ec96a894f8f"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_abstract_scale_draw.html#abdd97b4bedda111df8208ec96a894f8f">minimumExtent</a> () const</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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</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:a9325b265f351e9135cdbb9368e53f68a"><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#a9325b265f351e9135cdbb9368e53f68a">tickLabel</a> (const QFont &, double value) const</td></tr>
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<tr class="memdesc:a9325b265f351e9135cdbb9368e53f68a"><td class="mdescLeft"> </td><td class="mdescRight">Convert a value into its representing label and cache it. <a href="class_qwt_abstract_scale_draw.html#a9325b265f351e9135cdbb9368e53f68a">More...</a><br /></td></tr>
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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#a149792f955cc3f05c16362338bcc98c4">setScaleDiv()</a>, the scale can be drawn with the <a class="el" href="class_qwt_abstract_scale_draw.html#ac4442d7480db1288971e7eac15142467" title="Draw the scale.">draw()</a> member. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8h_source.html#l00031">31</a> of file <a class="el" href="qwt__abstract__scale__draw_8h_source.html">qwt_abstract_scale_draw.h</a>.</p>
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</div><h2 class="groupheader">Member Typedef Documentation</h2>
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<a id="af900d3a139451b70e6ce5acee5e2df7e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#af900d3a139451b70e6ce5acee5e2df7e">◆ </a></span>ScaleComponents</h2>
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<td class="memname">typedef QFlags<<a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> > <a class="el" href="class_qwt_abstract_scale_draw.html#af900d3a139451b70e6ce5acee5e2df7e">QwtAbstractScaleDraw::ScaleComponents</a></td>
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<p>An ORed combination of <a class="el" href="class_qwt_abstract_scale_draw.html#a26215d06a4d48adf401d0aa05d4193c5">ScaleComponent</a> values. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8h_source.html#l00051">51</a> of file <a class="el" href="qwt__abstract__scale__draw_8h_source.html">qwt_abstract_scale_draw.h</a>.</p>
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<h2 class="groupheader">Member Enumeration Documentation</h2>
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<a id="a26215d06a4d48adf401d0aa05d4193c5"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a26215d06a4d48adf401d0aa05d4193c5">◆ </a></span>ScaleComponent</h2>
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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><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#a8a69a890d349a9e03c145b20b5835e8a">hasComponent</a> </dd></dl>
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a26215d06a4d48adf401d0aa05d4193c5a61a6c4f4dec2b089edfb655e2b21c3a2"></a>Backbone </td><td class="fielddoc"><p>Backbone = the line where the ticks are located. </p>
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<tr><td class="fieldname"><a id="a26215d06a4d48adf401d0aa05d4193c5a1f23d080ce1229a0c4f70469e88acce0"></a>Ticks </td><td class="fielddoc"><p>Ticks. </p>
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<tr><td class="fieldname"><a id="a26215d06a4d48adf401d0aa05d4193c5ad2709d7efbb6f1618f0a8a3b6cafae96"></a>Labels </td><td class="fielddoc"><p>Labels. </p>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8h_source.html#l00039">39</a> of file <a class="el" href="qwt__abstract__scale__draw_8h_source.html">qwt_abstract_scale_draw.h</a>.</p>
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<h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a19c944664a2e36f06ae71b745fbd442e">◆ </a></span>QwtAbstractScaleDraw()</h2>
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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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<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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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00060">60</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ac4442d7480db1288971e7eac15142467">◆ </a></span>draw()</h2>
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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="paramtype">const QPalette & </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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<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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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00169">169</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a15994a6033e689c3acdb8d83ae4f2a1c">◆ </a></span>drawBackbone()</h2>
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<td class="memname">virtual void QwtAbstractScaleDraw::drawBackbone </td>
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<td>(</td>
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<p>Draws the baseline of the scale </p><dl class="params"><dt>Parameters</dt><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#aa78dc8bf05a0224450c947af54128d8d">drawLabel()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#a825368302b9ef93cea86ae46f847ab1b">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#a3c274c4a3bb5fdfbfb211b2b44da5465">QwtRoundScaleDraw</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#aa78dc8bf05a0224450c947af54128d8d">◆ </a></span>drawLabel()</h2>
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<p>Draws the label for a major scale tick</p>
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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#a27ce455f6a69f7db3815d796e6b94ebc">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#a4e09df3cb4c1868264653a32ccaebebf">QwtRoundScaleDraw</a>.</p>
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<p>Draw a tick</p>
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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#a546b94ae4cf4726e00ea9a99edfb6143">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#afe622c468eb6229b40adde688de21432">QwtRoundScaleDraw</a>.</p>
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<p>En/Disable a component of the 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#a8a69a890d349a9e03c145b20b5835e8a">hasComponent()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00079">79</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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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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<td class="mlabels-right">
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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#abdd97b4bedda111df8208ec96a894f8f">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#abdd97b4bedda111df8208ec96a894f8f">minimumExtent()</a> </dd></dl>
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<p>Implemented in <a class="el" href="class_qwt_scale_draw.html#a33767dec0793b7061058e3ec80913a0d">QwtScaleDraw</a>, and <a class="el" href="class_qwt_round_scale_draw.html#a20e3ae2b75f28c8d015ad21ad61f8b49">QwtRoundScaleDraw</a>.</p>
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<a id="a8a69a890d349a9e03c145b20b5835e8a"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a8a69a890d349a9e03c145b20b5835e8a">◆ </a></span>hasComponent()</h2>
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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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<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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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00095">95</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="a4ed95cd23c5d779c1b05aa5295409aa6"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a4ed95cd23c5d779c1b05aa5295409aa6">◆ </a></span>invalidateCache()</h2>
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<td class="memname">void QwtAbstractScaleDraw::invalidateCache </td>
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<td>(</td>
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<p>Invalidate the cache used by <a class="el" href="class_qwt_abstract_scale_draw.html#a9325b265f351e9135cdbb9368e53f68a" 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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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00417">417</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ac1d855f856b746559c41f4f06ec5442d"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ac1d855f856b746559c41f4f06ec5442d">◆ </a></span>label()</h2>
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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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<span class="mlabels"><span class="mlabel">virtual</span></span> </td>
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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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</dd>
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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#ad8d7deafeb00ee3e316ac1e6bfe1db1b">QwtDateScaleDraw</a>, and <a class="el" href="class_qwt_compass_scale_draw.html#a4fd750901f43b37bdfbfc8eb784ba185">QwtCompassScaleDraw</a>.</p>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00375">375</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ab3713ea053eb3d6327b18a3d14c7b820"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ab3713ea053eb3d6327b18a3d14c7b820">◆ </a></span>maxTickLength()</h2>
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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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<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><dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_abstract_scale_draw.html#a52fe17714fe96564b0d88af27e96e58f">tickLength()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#a7fed388e435aae791d61f48cc9ddf632">setTickLength()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00355">355</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="abdd97b4bedda111df8208ec96a894f8f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#abdd97b4bedda111df8208ec96a894f8f">◆ </a></span>minimumExtent()</h2>
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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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<p>Get the minimum extent </p><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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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00302">302</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ad0e889e3a5b5af8adb0d6a507e7fbc95"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad0e889e3a5b5af8adb0d6a507e7fbc95">◆ </a></span>penWidthF()</h2>
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<td class="memname">qreal QwtAbstractScaleDraw::penWidthF </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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</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>setPenWidth() </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00156">156</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ad15e796d2fd8bd1e2cfa66715bf58e2e"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad15e796d2fd8bd1e2cfa66715bf58e2e">◆ </a></span>scaleDiv()</h2>
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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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<dl class="section return"><dt>Returns</dt><dd>scale division </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00133">133</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ae7488eb63ad73a2e69acb29ff069c904"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ae7488eb63ad73a2e69acb29ff069c904">◆ </a></span>scaleMap() <span class="overload">[1/2]</span></h2>
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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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<dl class="section return"><dt>Returns</dt><dd>Map how to translate between scale and pixel values </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00127">127</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="a2582c30e82f8977877ac8044253f1fb8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a2582c30e82f8977877ac8044253f1fb8">◆ </a></span>scaleMap() <span class="overload">[2/2]</span></h2>
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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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<dl class="section return"><dt>Returns</dt><dd>Map how to translate between scale and pixel values </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00121">121</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ac174255c334b995ca010a6964597d5f2"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ac174255c334b995ca010a6964597d5f2">◆ </a></span>setMinimumExtent()</h2>
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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>
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<td class="paramname"><em>minExtent</em></td><td>)</td>
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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>
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<table class="params">
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<tr><td class="paramname">minExtent</td><td>Minimum extent</td></tr>
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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#a87e21208e981457cde501054319c77e7">extent()</a>, <a class="el" href="class_qwt_abstract_scale_draw.html#abdd97b4bedda111df8208ec96a894f8f">minimumExtent()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00289">289</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="a6401e26332d65433e0b881400a1ce03b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a6401e26332d65433e0b881400a1ce03b">◆ </a></span>setPenWidthF()</h2>
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<td class="memname">void QwtAbstractScaleDraw::setPenWidthF </td>
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<td>(</td>
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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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<dl class="section see"><dt>See also</dt><dd>penWidth() </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00144">144</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a149792f955cc3f05c16362338bcc98c4">◆ </a></span>setScaleDiv()</h2>
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<td class="memname">void QwtAbstractScaleDraw::setScaleDiv </td>
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<p>Change the scale division </p><dl class="params"><dt>Parameters</dt><dd>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00104">104</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a074675cd805656f0ae158f84745074af">◆ </a></span>setSpacing()</h2>
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<td class="memname">void QwtAbstractScaleDraw::setSpacing </td>
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<td>(</td>
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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>
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<table class="params">
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<tr><td class="paramname">spacing</td><td>Spacing</td></tr>
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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#ad3b290a76426a1a22a870e84c1655666" title="Get the spacing.">spacing()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00254">254</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a7fed388e435aae791d61f48cc9ddf632">◆ </a></span>setTickLength()</h2>
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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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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">double </td>
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<td class="paramname"><em>length</em> </td>
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<td></td>
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<td>)</td>
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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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<dl class="section warning"><dt>Warning</dt><dd>the length is limited to [0..1000] </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00315">315</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="a732d0e49c9092c48893b4f71cc7357db"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a732d0e49c9092c48893b4f71cc7357db">◆ </a></span>setTransformation()</h2>
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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>
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<td class="paramname"><em>transformation</em></td><td>)</td>
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<p>Change the transformation of the scale </p><dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">transformation</td><td>New scale transformation </td></tr>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00115">115</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="ad3b290a76426a1a22a870e84c1655666"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ad3b290a76426a1a22a870e84c1655666">◆ </a></span>spacing()</h2>
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<td class="memname">double QwtAbstractScaleDraw::spacing </td>
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<td class="paramname"></td><td>)</td>
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<td> const</td>
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<p>Get the spacing. </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="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#a074675cd805656f0ae158f84745074af" title="Set the spacing between tick and labels.">setSpacing()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00271">271</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9325b265f351e9135cdbb9368e53f68a">◆ </a></span>tickLabel()</h2>
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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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<td class="paramtype">double </td>
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<span class="mlabels"><span class="mlabel">protected</span></span> </td>
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<p>Convert a value into its representing label and cache it. </p>
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<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>
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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 </td></tr>
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<tr><td class="paramname">value</td><td>Value</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Tick label </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00393">393</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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<a id="a52fe17714fe96564b0d88af27e96e58f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#a52fe17714fe96564b0d88af27e96e58f">◆ </a></span>tickLength()</h2>
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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#ab3713ea053eb3d6327b18a3d14c7b820">maxTickLength()</a> </dd></dl>
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<p class="definition">Definition at line <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html#l00338">338</a> of file <a class="el" href="qwt__abstract__scale__draw_8cpp_source.html">qwt_abstract_scale_draw.cpp</a>.</p>
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