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 <span id="projectnumber">3.2.3</span>
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<div class="title">/home/koen/project/wt/public-git/wt/examples/painting/PaintExample.C</div> </div>
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<a href="PaintExample_8C.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * See the LICENSE file for terms of use.</span>
<a name="l00005"></a>00005 <span class="comment"> */</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="preprocessor">#include <Wt/WContainerWidget></span>
<a name="l00008"></a>00008 <span class="preprocessor">#include <Wt/WGridLayout></span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <Wt/WSlider></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <Wt/WText></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#include "<a class="code" href="PaintExample_8h.html">PaintExample.h</a>"</span>
<a name="l00013"></a>00013 <span class="preprocessor">#include "<a class="code" href="ShapesWidget_8h.html">ShapesWidget.h</a>"</span>
<a name="l00014"></a>00014
<a name="l00015"></a>00015 <span class="keyword">using namespace </span>Wt;
<a name="l00016"></a>00016
<a name="l00017"></a><a class="code" href="classPaintExample.html#a0cfbaaa0059b499b578b91e329b4dd15">00017</a> <a class="code" href="classPaintExample.html#a0cfbaaa0059b499b578b91e329b4dd15">PaintExample::PaintExample</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html">WContainerWidget</a> *root, <span class="keywordtype">bool</span> showTitle)
<a name="l00018"></a>00018 : <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html">WContainerWidget</a>(root)
<a name="l00019"></a>00019 {
<a name="l00020"></a>00020 std::string text;
<a name="l00021"></a>00021 <span class="keywordflow">if</span> (showTitle)
<a name="l00022"></a>00022 text += <span class="stringliteral">"<h2>Paint example</h2>"</span>;
<a name="l00023"></a>00023
<a name="l00024"></a>00024 text +=
<a name="l00025"></a>00025 <span class="stringliteral">"<p>A simple example demonstrating cross-browser vector graphics."</span>
<a name="l00026"></a>00026 <span class="stringliteral">"</p>"</span>
<a name="l00027"></a>00027 <span class="stringliteral">"<p>The emweb logo below is painted using the Wt WPainter API from "</span>
<a name="l00028"></a>00028 <span class="stringliteral">"bezier paths, and rendered to the browser using inline SVG, inline VML "</span>
<a name="l00029"></a>00029 <span class="stringliteral">"or the HTML 5 &lt;canvas&gt; element."</span>
<a name="l00030"></a>00030 <span class="stringliteral">"</p>"</span>
<a name="l00031"></a>00031 <span class="stringliteral">"<p>"</span>
<a name="l00032"></a>00032 <span class="stringliteral">"The example also demonstrates the horizontal and vertical "</span>
<a name="l00033"></a>00033 <span class="stringliteral">"<a href=\"http://www.webtoolkit.eu/wt/doc/reference/html/classWt_1_1WSlider.html\" target=\"_blank\">"</span>
<a name="l00034"></a>00034 <span class="stringliteral">"WSlider</a> widgets. Here,"</span>
<a name="l00035"></a>00035 <span class="stringliteral">"the events of the WSlider widgets are used to scale and rotate the "</span>
<a name="l00036"></a>00036 <span class="stringliteral">"emweb logo."</span>
<a name="l00037"></a>00037 <span class="stringliteral">"</p>"</span>
<a name="l00038"></a>00038 <span class="stringliteral">"<p>"</span>
<a name="l00039"></a>00039 <span class="stringliteral">"In non-IE browsers, a different backend is used for positive or negative "</span>
<a name="l00040"></a>00040 <span class="stringliteral">"angles (SVG or HTML canvas)."</span>
<a name="l00041"></a>00041 <span class="stringliteral">"</p>"</span>;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WText.html">WText</a>(text, <span class="keyword">this</span>);
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html">WContainerWidget</a> *emweb = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html#a520ba6e52a36a7f2efbef1a31a69e898">WContainerWidget</a>(<span class="keyword">this</span>);
<a name="l00046"></a>00046 emweb-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WWebWidget.html#a9795c18e926b26b97fcbabc62a1dd4e3">setMargin</a>(WLength::Auto, <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a5a6f4636bcc6ab3c075165d249b3a5a3a6568fecac7c7d7223afaed240bcfdd9e">Left</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a5a6f4636bcc6ab3c075165d249b3a5a3acf431c3ce5eb6f14c0390feb14a68004">Right</a>);
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WGridLayout.html">WGridLayout</a> *<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html#afaba82a27836f4a82bab48e8b26ccca2">layout</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WGridLayout.html">WGridLayout</a>();
<a name="l00049"></a>00049 emweb-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WContainerWidget.html#a1c84e0ffe330d4798f0ce217f75be08c">setLayout</a>(layout);
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html">WSlider</a> *scaleSlider = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html">WSlider</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a2a8d45559e16a0185bf61bfad0a67912ac2ebf22b096a22b18eef23e736aa2e28">Horizontal</a>);
<a name="l00052"></a>00052 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#aea0dad399f79f2014dbd3f06d7cdd6d0">setMinimum</a>(0);
<a name="l00053"></a>00053 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ae1fcddb363795d572da2ae68362771e5">setMaximum</a>(20);
<a name="l00054"></a>00054 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#afc41362dafd1f53f4d0d52385c04d40c">setValue</a>(10);
<a name="l00055"></a>00055 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#a3497303ace2820b3bd457119cec35411">setTickInterval</a>(5);
<a name="l00056"></a>00056 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#a58e4a2a02c31b47040d35d646ad2ec0b">setTickPosition</a>(WSlider::TicksBothSides);
<a name="l00057"></a>00057 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ab2c74e01222219a65b799cd78800a114">resize</a>(300, 50);
<a name="l00058"></a>00058 scaleSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ac7257988652fc39910b1088cf02ecc5a">sliderMoved</a>().connect(<span class="keyword">this</span>, &<a class="code" href="classPaintExample.html#aaa524597bf1b0f0eb24a7def16c8c8d9">PaintExample::scaleShape</a>);
<a name="l00059"></a>00059
<a name="l00060"></a>00060 layout-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WGridLayout.html#a6e64afee237de5665fcd014f407130b2">addWidget</a>(scaleSlider, 0, 1, <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa121104cdbb5db77c7d038813a93998e5">AlignCenter</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html">WSlider</a> *rotateSlider = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html">WSlider</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#a2a8d45559e16a0185bf61bfad0a67912af916b7ec24727db2d972f0770170c7f5">Vertical</a>);
<a name="l00063"></a>00063 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#aea0dad399f79f2014dbd3f06d7cdd6d0">setMinimum</a>(-30);
<a name="l00064"></a>00064 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ae1fcddb363795d572da2ae68362771e5">setMaximum</a>(30);
<a name="l00065"></a>00065 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#afc41362dafd1f53f4d0d52385c04d40c">setValue</a>(0);
<a name="l00066"></a>00066 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#a3497303ace2820b3bd457119cec35411">setTickInterval</a>(10);
<a name="l00067"></a>00067 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#a58e4a2a02c31b47040d35d646ad2ec0b">setTickPosition</a>(WSlider::TicksBothSides);
<a name="l00068"></a>00068 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ab2c74e01222219a65b799cd78800a114">resize</a>(50, 400);
<a name="l00069"></a>00069 rotateSlider-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WSlider.html#ac7257988652fc39910b1088cf02ecc5a">sliderMoved</a>().connect(<span class="keyword">this</span>, &<a class="code" href="classPaintExample.html#a09f675b9dc2cd9c4b7272f687135a28a">PaintExample::rotateShape</a>);
<a name="l00070"></a>00070
<a name="l00071"></a>00071 layout-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WGridLayout.html#a6e64afee237de5665fcd014f407130b2">addWidget</a>(rotateSlider, 1, 0, <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa121104cdbb5db77c7d038813a93998e5">AlignCenter</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a> = <span class="keyword">new</span> <a class="code" href="classShapesWidget.html">ShapesWidget</a>();
<a name="l00074"></a>00074 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="code" href="classShapesWidget.html#a4f089bb4237e928bf5a0f485848456a1">setAngle</a>(0.0);
<a name="l00075"></a>00075 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="code" href="classShapesWidget.html#af2342542ef4b88d14d2c28be5beece31">setRelativeSize</a>(0.5);
<a name="l00076"></a>00076 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WPaintedWidget.html#a2a3a3be8b9a8c6d56fad4b64b370fdd4">setPreferredMethod</a>(WPaintedWidget::HtmlCanvas);
<a name="l00077"></a>00077
<a name="l00078"></a>00078 layout-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WGridLayout.html#a6e64afee237de5665fcd014f407130b2">addWidget</a>(<a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>, 1, 1, <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa121104cdbb5db77c7d038813a93998e5">AlignCenter</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/namespaceWt.html#ab8f772c69bc8180c31f9e4f4593b143fa2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a><a class="code" href="classPaintExample.html#a09f675b9dc2cd9c4b7272f687135a28a">00081</a> <span class="keywordtype">void</span> <a class="code" href="classPaintExample.html#a09f675b9dc2cd9c4b7272f687135a28a">PaintExample::rotateShape</a>(<span class="keywordtype">int</span> v)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="code" href="classShapesWidget.html#a4f089bb4237e928bf5a0f485848456a1">setAngle</a>(v / 2.0);
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// Being silly: test alternate rendering method</span>
<a name="l00086"></a>00086 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html" href="../../reference/html/classWt_1_1WPaintedWidget.html#a2a3a3be8b9a8c6d56fad4b64b370fdd4">setPreferredMethod</a>(v < 0 ? WPaintedWidget::InlineSvgVml
<a name="l00087"></a>00087 : WPaintedWidget::HtmlCanvas);
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a><a class="code" href="classPaintExample.html#aaa524597bf1b0f0eb24a7def16c8c8d9">00090</a> <span class="keywordtype">void</span> <a class="code" href="classPaintExample.html#aaa524597bf1b0f0eb24a7def16c8c8d9">PaintExample::scaleShape</a>(<span class="keywordtype">int</span> v)
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <a class="code" href="classPaintExample.html#a4c67f63f963223828f21a283dbfff0e1">shapes_</a>-><a class="code" href="classShapesWidget.html#af2342542ef4b88d14d2c28be5beece31">setRelativeSize</a>(0.1 + 0.9 * (v/20.0));
<a name="l00093"></a>00093 }
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