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Timo Lang
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<a href="screen_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/**************************************************************************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">* Project: discoverpixy</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">* Website: https://github.com/t-moe/discoverpixy</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">* Authors: Aaron Schmocker, Timo Lang</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">* Institution: BFH Bern University of Applied Sciences</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">* File: common/gui/screen.c</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment">* Version History:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment">* Date Autor Email SHA Changes</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment">* 2015-04-27 timolang@gmail.com cf72baa Introduced a Screen (sub) module and divided app into multiple screens.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment">* 2015-04-27 timolang@gmail.com 77e6d0e Fixed screen implementation.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment">* 2015-05-10 timolang@gmail.com b6ab7c8 Fixed compiler warning in tft and screen module.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment">* 2015-05-17 timolang@gmail.com 2d46336 Improved comments in implementation of button, checkbox, numupdown, tft, touch and screen modules/submodules.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment">* 2015-06-01 timolang@gmail.com eb573bc Finalized calibration. Fixed a bug in screen module.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment">* 2015-06-06 timolang@gmail.com c06661d Fixed some outdated comments in source code. Documented Gui Module in docu.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment">*</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment">**************************************************************************************************************************************/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="screen_8h.html">screen.h</a>&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">/* The idea is as follows:</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment"> * We only call screen callbacks from the gui_screen_update() method, which is called from the applications main loop.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment"> * Instructions to switch the screen will be delayed until the gui_screen_update() method is called again.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment"> * This makes it safe to change the screen from an touch interrupt (e.g. button callback)</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment">/* Possible Improvements:</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment"> * Ensure that you can not navigate to a screen which is already in the history (because it will corrupt the list)</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;</div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="screen_8c.html#ad773a80ed58bd458652b3072dedea8e0"> 31</a></span>&#160;<span class="keyword">static</span> <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* <a class="code" href="screen_8c.html#ad773a80ed58bd458652b3072dedea8e0">screen_list</a> = NULL; <span class="comment">//Head of the linked list which stores the screen history.</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="screen_8c.html#ac1cf7544db4ed268dcdb6c084608bce2"> 32</a></span>&#160;<span class="keyword">static</span> <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* <a class="code" href="screen_8c.html#ac1cf7544db4ed268dcdb6c084608bce2">screen_current</a> = NULL; <span class="comment">//Pointer to the current screen (= tail of the list)</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="screen_8c.html#a351887a0341328604386e22e71b1fc1b"> 33</a></span>&#160;<span class="keyword">static</span> <span class="keyword">volatile</span> <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* <a class="code" href="screen_8c.html#a351887a0341328604386e22e71b1fc1b">screen_goto</a> = NULL; <span class="comment">//Screen we should navigate to once we enter the gui_screen_update() method again</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="group__screen.html#gae57813381133ca7d2e50f6823e41aaf9"> 35</a></span>&#160;<a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* <a class="code" href="group__screen.html#gae57813381133ca7d2e50f6823e41aaf9">gui_screen_get_current</a>()</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;{</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordflow">return</span> <a class="code" href="screen_8c.html#ac1cf7544db4ed268dcdb6c084608bce2">screen_current</a>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;}</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="group__screen.html#gab7394734ee1d57093721cbd22b901323"> 41</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__screen.html#gab7394734ee1d57093721cbd22b901323">gui_screen_update</a>()</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;{</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">if</span> (screen_goto != NULL) { <span class="comment">//we received the task to switch the screen</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* go = (<a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>*) screen_goto; <span class="comment">//Backup volatile variable</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; screen_goto = NULL; <span class="comment">//reset the &quot;goto instruction&quot;, since we&#39;re processing it now</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">if</span> (go-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> != NULL) { <span class="comment">//The screen is not the last in the list, so we&#39;re going back</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keywordflow">if</span> (go-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> != screen_current) { <span class="comment">//this condition should always be false</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span>; <span class="comment">//list corrupted?</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; screen_current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a5e8f3db07ddecd10762ce1088cb2fbd8">on_leave</a>(screen_current); <span class="comment">//let the current screen free/unregister it&#39;s resources</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; go-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> = NULL; <span class="comment">//remove the current screen from the list</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; } <span class="keywordflow">else</span> { <span class="comment">//we&#39;re going forward (to a new screen)</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">if</span> (screen_current != NULL) { <span class="comment">//this is not the first screen</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; screen_current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a5e8f3db07ddecd10762ce1088cb2fbd8">on_leave</a>(screen_current); <span class="comment">//let the current screen free/unregister it&#39;s resources</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; screen_current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> = go; <span class="comment">//append the new screen to the end of the list</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; } <span class="keywordflow">else</span> { <span class="comment">//first screen ever seen</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; screen_list = go; <span class="comment">//set the new screen as list-head</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; }</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; go-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#ae6559e38ebbedb8f94a8754256dc454b">on_enter</a>(go); <span class="comment">//let the new screen allocate/register it&#39;s resources</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; screen_current = go; <span class="comment">//the new screen is now the current screen. Transition done</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; }</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">if</span> (screen_current != NULL) { <span class="comment">//A screen has been set</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; screen_current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#ac795215b462e455f4d482f38c05e0b40">on_update</a>(screen_current); <span class="comment">//Update current screen</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;}</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;</div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="group__screen.html#gad4473a16eaf48dab405d23f5f63af3aa"> 74</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="group__screen.html#gad4473a16eaf48dab405d23f5f63af3aa">gui_screen_navigate</a>(<a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* <a class="code" href="screen__filetest_8c.html#a939fdd806f427cc8505ed817e28cce9d">screen</a>)</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;{</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keywordflow">if</span> (screen == NULL || screen == screen_current || screen == screen_goto) { <span class="comment">//invalid argument passed</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; screen-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> = NULL; <span class="comment">//this will become the new tail of the list, so the next pointer must be NULL</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; screen_goto = <a class="code" href="screen__filetest_8c.html#a939fdd806f427cc8505ed817e28cce9d">screen</a>; <span class="comment">//&quot;send message&quot; to main loop, to switch the screen</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;}</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;</div>
<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="group__screen.html#ga8e14bc7ee0214e2926965f9bdb54a866"> 85</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="group__screen.html#ga8e14bc7ee0214e2926965f9bdb54a866">gui_screen_back</a>()</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;{</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordflow">if</span> (screen_list == NULL) { <span class="comment">//the list head is emtpy, nothing to go back to</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* current = <a class="code" href="screen_8c.html#ad773a80ed58bd458652b3072dedea8e0">screen_list</a>;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <a class="code" href="struct_s_c_r_e_e_n___s.html">SCREEN_STRUCT</a>* last = NULL;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="comment">//Find second last element in list</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordflow">while</span> (current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a> != NULL) {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; last = current;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; current = current-&gt;<a class="code" href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">next</a>;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">if</span> (last == NULL) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">//There&#39;s only a single screen, there&#39;s no going back here</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">if</span> (current != screen_current) {</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">//The last entry in the list is not the current screen. List corrupted?</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; screen_goto = last; <span class="comment">//&quot;send message&quot; to main loop, to switch the screen</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;}</div>
<div class="ttc" id="struct_s_c_r_e_e_n___s_html_ae6559e38ebbedb8f94a8754256dc454b"><div class="ttname"><a href="struct_s_c_r_e_e_n___s.html#ae6559e38ebbedb8f94a8754256dc454b">SCREEN_S::on_enter</a></div><div class="ttdeci">SCREEN_CALLBACK on_enter</div><div class="ttdoc">The Callback which is called when the screen is entered. Add/Register all UI-Elements here...</div><div class="ttdef"><b>Definition:</b> <a href="screen_8h_source.html#l00053">screen.h:53</a></div></div>
<div class="ttc" id="struct_s_c_r_e_e_n___s_html_a914e64c0c6cfaf4f7b2b0c3493f0cbf2"><div class="ttname"><a href="struct_s_c_r_e_e_n___s.html#a914e64c0c6cfaf4f7b2b0c3493f0cbf2">SCREEN_S::next</a></div><div class="ttdeci">struct SCREEN_S * next</div><div class="ttdoc">Used internally. do not modify, do not initialize. </div><div class="ttdef"><b>Definition:</b> <a href="screen_8h_source.html#l00057">screen.h:57</a></div></div>
<div class="ttc" id="screen_8h_html"><div class="ttname"><a href="screen_8h.html">screen.h</a></div></div>
<div class="ttc" id="group__screen_html_gab7394734ee1d57093721cbd22b901323"><div class="ttname"><a href="group__screen.html#gab7394734ee1d57093721cbd22b901323">gui_screen_update</a></div><div class="ttdeci">void gui_screen_update()</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00041">screen.c:41</a></div></div>
<div class="ttc" id="screen_8c_html_ac1cf7544db4ed268dcdb6c084608bce2"><div class="ttname"><a href="screen_8c.html#ac1cf7544db4ed268dcdb6c084608bce2">screen_current</a></div><div class="ttdeci">static SCREEN_STRUCT * screen_current</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00032">screen.c:32</a></div></div>
<div class="ttc" id="screen_8c_html_a351887a0341328604386e22e71b1fc1b"><div class="ttname"><a href="screen_8c.html#a351887a0341328604386e22e71b1fc1b">screen_goto</a></div><div class="ttdeci">static volatile SCREEN_STRUCT * screen_goto</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00033">screen.c:33</a></div></div>
<div class="ttc" id="screen_8c_html_ad773a80ed58bd458652b3072dedea8e0"><div class="ttname"><a href="screen_8c.html#ad773a80ed58bd458652b3072dedea8e0">screen_list</a></div><div class="ttdeci">static SCREEN_STRUCT * screen_list</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00031">screen.c:31</a></div></div>
<div class="ttc" id="group__screen_html_gae57813381133ca7d2e50f6823e41aaf9"><div class="ttname"><a href="group__screen.html#gae57813381133ca7d2e50f6823e41aaf9">gui_screen_get_current</a></div><div class="ttdeci">SCREEN_STRUCT * gui_screen_get_current()</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00035">screen.c:35</a></div></div>
<div class="ttc" id="struct_s_c_r_e_e_n___s_html_a5e8f3db07ddecd10762ce1088cb2fbd8"><div class="ttname"><a href="struct_s_c_r_e_e_n___s.html#a5e8f3db07ddecd10762ce1088cb2fbd8">SCREEN_S::on_leave</a></div><div class="ttdeci">SCREEN_CALLBACK on_leave</div><div class="ttdoc">The Callback which is called when the screen is left. Remove/Unregister all UI-Elements here...</div><div class="ttdef"><b>Definition:</b> <a href="screen_8h_source.html#l00054">screen.h:54</a></div></div>
<div class="ttc" id="group__screen_html_gad4473a16eaf48dab405d23f5f63af3aa"><div class="ttname"><a href="group__screen.html#gad4473a16eaf48dab405d23f5f63af3aa">gui_screen_navigate</a></div><div class="ttdeci">bool gui_screen_navigate(SCREEN_STRUCT *screen)</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00074">screen.c:74</a></div></div>
<div class="ttc" id="struct_s_c_r_e_e_n___s_html"><div class="ttname"><a href="struct_s_c_r_e_e_n___s.html">SCREEN_S</a></div><div class="ttdef"><b>Definition:</b> <a href="screen_8h_source.html#l00052">screen.h:52</a></div></div>
<div class="ttc" id="screen__filetest_8c_html_a939fdd806f427cc8505ed817e28cce9d"><div class="ttname"><a href="screen__filetest_8c.html#a939fdd806f427cc8505ed817e28cce9d">screen</a></div><div class="ttdeci">static SCREEN_STRUCT screen</div><div class="ttdef"><b>Definition:</b> <a href="screen__filetest_8c_source.html#l00134">screen_filetest.c:134</a></div></div>
<div class="ttc" id="group__screen_html_ga8e14bc7ee0214e2926965f9bdb54a866"><div class="ttname"><a href="group__screen.html#ga8e14bc7ee0214e2926965f9bdb54a866">gui_screen_back</a></div><div class="ttdeci">bool gui_screen_back()</div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00085">screen.c:85</a></div></div>
<div class="ttc" id="struct_s_c_r_e_e_n___s_html_ac795215b462e455f4d482f38c05e0b40"><div class="ttname"><a href="struct_s_c_r_e_e_n___s.html#ac795215b462e455f4d482f38c05e0b40">SCREEN_S::on_update</a></div><div class="ttdeci">SCREEN_CALLBACK on_update</div><div class="ttdoc">The Callback which is called repeatedly when the screen should be updated. Update/Redraw all UI-Eleme...</div><div class="ttdef"><b>Definition:</b> <a href="screen_8h_source.html#l00055">screen.h:55</a></div></div>
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