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<section id="proverbs-py">
<span id="proverbs"></span><h1>proverbs.py<a class="headerlink" href="#proverbs-py" title="Link to this heading"></a></h1>
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<img alt="../_images/proverbs.jpg" src="../_images/proverbs.jpg" />
<figcaption>
<p><span class="caption-text">Test for TrueType write_font_converter.</span><a class="headerlink" href="#id1" title="Link to this image"></a></p>
</figcaption>
</figure>
<p>Displays what I hope are chinese proverbs in simplified chinese to test UTF-8 font support.
The fonts were converted from True Type fonts using the
<a class="reference internal" href="../utilities/write_font_converter.html#write-font-converter"><span class="std std-ref">write_font_converter.py</span></a> utility.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/bin/sh</span>
<span class="o">../../</span><span class="n">utils</span><span class="o">/</span><span class="n">write_font_converter</span><span class="o">.</span><span class="n">py</span> \
<span class="o">-</span><span class="n">s</span> <span class="s2">&quot;万事起头难。熟能生巧。冰冻三尺，非一日之寒。三个臭皮匠，胜过诸葛亮。今日事，今日毕。师父领进门，修行在个人。一口吃不成胖子。欲速则不达。百闻不如一见。不入虎穴，焉得虎子。&quot;</span> \
<span class="n">NotoSansSC</span><span class="o">-</span><span class="n">Regular</span><span class="o">.</span><span class="n">otf</span> <span class="mi">20</span> <span class="o">&gt;</span><span class="n">proverbs_20</span><span class="o">.</span><span class="n">py</span>
<span class="o">../../</span><span class="n">utils</span><span class="o">/</span><span class="n">write_font_converter</span><span class="o">.</span><span class="n">py</span> \
<span class="o">-</span><span class="n">s</span> <span class="s2">&quot;万事起头难。熟能生巧。冰冻三尺，非一日之寒。三个臭皮匠，胜过诸葛亮。今日事，今日毕。师父领进门，修行在个人。一口吃不成胖子。欲速则不达。百闻不如一见。不入虎穴，焉得虎子。&quot;</span> \
<span class="n">NotoSansSC</span><span class="o">-</span><span class="n">Regular</span><span class="o">.</span><span class="n">otf</span> <span class="mi">30</span> <span class="o">&gt;</span><span class="n">proverbs_30</span><span class="o">.</span><span class="n">py</span>
</pre></div>
</div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>This example requires the following modules:</p>
<table class="hlist"><tr><td><ul class="simple">
<li><p><cite>st7789py</cite></p></li>
<li><p><cite>tft_config</cite></p></li>
</ul>
</td><td><ul class="simple">
<li><p><cite>proverbs_20</cite></p></li>
</ul>
</td><td><ul class="simple">
<li><p><cite>proverbs_30</cite></p></li>
</ul>
</td></tr></table>
</div>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="linenos"> 1</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos"> 2</span><span class="sd">proverbs.py</span>
<span class="linenos"> 3</span><span class="sd">===========</span>
<span class="linenos"> 4</span>
<span class="linenos"> 5</span><span class="sd">.. figure:: ../_static/proverbs.jpg</span>
<span class="linenos"> 6</span><span class="sd"> :align: center</span>
<span class="linenos"> 7</span>
<span class="linenos"> 8</span><span class="sd"> Test for TrueType write_font_converter.</span>
<span class="linenos"> 9</span>
<span class="linenos">10</span><span class="sd">Displays what I hope are chinese proverbs in simplified chinese to test UTF-8 font support.</span>
<span class="linenos">11</span><span class="sd">The fonts were converted from True Type fonts using the</span>
<span class="linenos">12</span><span class="sd">:ref:`write_font_converter.py&lt;write_font_converter&gt;` utility.</span>
<span class="linenos">13</span>
<span class="linenos">14</span><span class="sd">.. literalinclude:: ../../../examples/proverbs/make_proverbs_fonts.sh</span>
<span class="linenos">15</span>
<span class="linenos">16</span>
<span class="linenos">17</span><span class="sd">.. note:: This example requires the following modules:</span>
<span class="linenos">18</span>
<span class="linenos">19</span><span class="sd"> .. hlist::</span>
<span class="linenos">20</span><span class="sd"> :columns: 3</span>
<span class="linenos">21</span>
<span class="linenos">22</span><span class="sd"> - `st7789py`</span>
<span class="linenos">23</span><span class="sd"> - `tft_config`</span>
<span class="linenos">24</span><span class="sd"> - `proverbs_20`</span>
<span class="linenos">25</span><span class="sd"> - `proverbs_30`</span>
<span class="linenos">26</span>
<span class="linenos">27</span><span class="sd">&quot;&quot;&quot;</span>
<span class="linenos">28</span>
<span class="linenos">29</span><span class="kn">import</span> <span class="nn">utime</span>
<span class="linenos">30</span><span class="kn">import</span> <span class="nn">st7789py</span> <span class="k">as</span> <span class="nn">st7789</span>
<span class="linenos">31</span><span class="kn">import</span> <span class="nn">tft_config</span>
<span class="linenos">32</span><span class="kn">import</span> <span class="nn">proverbs_20</span> <span class="k">as</span> <span class="nn">font20</span>
<span class="linenos">33</span><span class="kn">import</span> <span class="nn">proverbs_30</span> <span class="k">as</span> <span class="nn">font30</span>
<span class="linenos">34</span>
<span class="linenos">35</span>
<span class="linenos">36</span><span class="n">tft</span> <span class="o">=</span> <span class="n">tft_config</span><span class="o">.</span><span class="n">config</span><span class="p">(</span><span class="n">tft_config</span><span class="o">.</span><span class="n">WIDE</span><span class="p">)</span>
<span class="linenos">37</span>
<span class="linenos">38</span>
<span class="linenos">39</span><span class="k">def</span> <span class="nf">color_wheel</span><span class="p">(</span><span class="n">WheelPos</span><span class="p">):</span>
<span class="linenos">40</span><span class="w"> </span><span class="sd">&quot;&quot;&quot;returns a 565 color from the given position of the color wheel&quot;&quot;&quot;</span>
<span class="linenos">41</span> <span class="n">WheelPos</span> <span class="o">=</span> <span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="n">WheelPos</span><span class="p">)</span> <span class="o">%</span> <span class="mi">255</span>
<span class="linenos">42</span>
<span class="linenos">43</span> <span class="k">if</span> <span class="n">WheelPos</span> <span class="o">&lt;</span> <span class="mi">85</span><span class="p">:</span>
<span class="linenos">44</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="mi">255</span> <span class="o">-</span> <span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">)</span>
<span class="linenos">45</span>
<span class="linenos">46</span> <span class="k">if</span> <span class="n">WheelPos</span> <span class="o">&lt;</span> <span class="mi">170</span><span class="p">:</span>
<span class="linenos">47</span> <span class="n">WheelPos</span> <span class="o">-=</span> <span class="mi">85</span>
<span class="linenos">48</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">255</span> <span class="o">-</span> <span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">)</span>
<span class="linenos">49</span>
<span class="linenos">50</span> <span class="n">WheelPos</span> <span class="o">-=</span> <span class="mi">170</span>
<span class="linenos">51</span> <span class="k">return</span> <span class="n">st7789</span><span class="o">.</span><span class="n">color565</span><span class="p">(</span><span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">255</span> <span class="o">-</span> <span class="n">WheelPos</span> <span class="o">*</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="linenos">52</span>
<span class="linenos">53</span>
<span class="linenos">54</span><span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
<span class="linenos">55</span> <span class="n">proverbs</span> <span class="o">=</span> <span class="p">[</span>
<span class="linenos">56</span> <span class="s2">&quot;万事起头难&quot;</span><span class="p">,</span>
<span class="linenos">57</span> <span class="s2">&quot;熟能生巧&quot;</span><span class="p">,</span>
<span class="linenos">58</span> <span class="s2">&quot;冰冻三尺，非一日之寒&quot;</span><span class="p">,</span>
<span class="linenos">59</span> <span class="s2">&quot;三个臭皮匠，胜过诸葛亮&quot;</span><span class="p">,</span>
<span class="linenos">60</span> <span class="s2">&quot;今日事，今日毕&quot;</span><span class="p">,</span>
<span class="linenos">61</span> <span class="s2">&quot;师父领进门，修行在个人&quot;</span><span class="p">,</span>
<span class="linenos">62</span> <span class="s2">&quot;一口吃不成胖子&quot;</span><span class="p">,</span>
<span class="linenos">63</span> <span class="s2">&quot;欲速则不达&quot;</span><span class="p">,</span>
<span class="linenos">64</span> <span class="s2">&quot;百闻不如一见&quot;</span><span class="p">,</span>
<span class="linenos">65</span> <span class="s2">&quot;不入虎穴，焉得虎子&quot;</span><span class="p">,</span>
<span class="linenos">66</span> <span class="p">]</span>
<span class="linenos">67</span>
<span class="linenos">68</span> <span class="n">font</span> <span class="o">=</span> <span class="n">font20</span> <span class="k">if</span> <span class="n">tft</span><span class="o">.</span><span class="n">width</span> <span class="o">&lt;</span> <span class="mi">239</span> <span class="k">else</span> <span class="n">font30</span>
<span class="linenos">69</span> <span class="n">line_height</span> <span class="o">=</span> <span class="n">font</span><span class="o">.</span><span class="n">HEIGHT</span> <span class="o">+</span> <span class="mi">8</span>
<span class="linenos">70</span> <span class="n">half_height</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">height</span> <span class="o">//</span> <span class="mi">2</span>
<span class="linenos">71</span> <span class="n">half_width</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">width</span> <span class="o">//</span> <span class="mi">2</span>
<span class="linenos">72</span> <span class="n">wheel</span> <span class="o">=</span> <span class="mi">0</span>
<span class="linenos">73</span>
<span class="linenos">74</span> <span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="linenos">75</span> <span class="k">for</span> <span class="n">proverb</span> <span class="ow">in</span> <span class="n">proverbs</span><span class="p">:</span>
<span class="linenos">76</span> <span class="n">proverb_lines</span> <span class="o">=</span> <span class="n">proverb</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s2">&quot;，&quot;</span><span class="p">)</span>
<span class="linenos">77</span> <span class="n">half_lines_height</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">proverb_lines</span><span class="p">)</span> <span class="o">*</span> <span class="n">line_height</span> <span class="o">//</span> <span class="mi">2</span>
<span class="linenos">78</span>
<span class="linenos">79</span> <span class="n">tft</span><span class="o">.</span><span class="n">fill</span><span class="p">(</span><span class="n">st7789</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
<span class="linenos">80</span>
<span class="linenos">81</span> <span class="k">for</span> <span class="n">count</span><span class="p">,</span> <span class="n">proverb_line</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">proverb_lines</span><span class="p">):</span>
<span class="linenos">82</span> <span class="n">half_length</span> <span class="o">=</span> <span class="n">tft</span><span class="o">.</span><span class="n">write_width</span><span class="p">(</span><span class="n">font</span><span class="p">,</span> <span class="n">proverb_line</span><span class="p">)</span> <span class="o">//</span> <span class="mi">2</span>
<span class="linenos">83</span>
<span class="linenos">84</span> <span class="n">tft</span><span class="o">.</span><span class="n">write</span><span class="p">(</span>
<span class="linenos">85</span> <span class="n">font</span><span class="p">,</span>
<span class="linenos">86</span> <span class="n">proverb_line</span><span class="p">,</span>
<span class="linenos">87</span> <span class="n">half_width</span> <span class="o">-</span> <span class="n">half_length</span><span class="p">,</span>
<span class="linenos">88</span> <span class="n">half_height</span> <span class="o">-</span> <span class="n">half_lines_height</span> <span class="o">+</span> <span class="n">count</span> <span class="o">*</span> <span class="n">line_height</span><span class="p">,</span>
<span class="linenos">89</span> <span class="n">color_wheel</span><span class="p">(</span><span class="n">wheel</span><span class="p">),</span>
<span class="linenos">90</span> <span class="p">)</span>
<span class="linenos">91</span>
<span class="linenos">92</span> <span class="n">wheel</span> <span class="o">=</span> <span class="p">(</span><span class="n">wheel</span> <span class="o">+</span> <span class="mi">5</span><span class="p">)</span> <span class="o">%</span> <span class="mi">256</span>
<span class="linenos">93</span>
<span class="linenos">94</span> <span class="c1"># pause to slow down scrolling</span>
<span class="linenos">95</span> <span class="n">utime</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
<span class="linenos">96</span>
<span class="linenos">97</span>
<span class="linenos">98</span><span class="n">main</span><span class="p">()</span>
</pre></div>
</div>
</section>
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