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<h1>Source code for TermTk.TTkAbstract.abstractscrollarea</h1><div class="highlight"><pre>
<span></span><span class="c1"># MIT License</span>
<span class="c1">#</span>
<span class="c1"># Copyright (c) 2021 Eugenio Parodi &lt;ceccopierangiolieugenio AT googlemail DOT com&gt;</span>
<span class="c1">#</span>
<span class="c1"># Permission is hereby granted, free of charge, to any person obtaining a copy</span>
<span class="c1"># of this software and associated documentation files (the &quot;Software&quot;), to deal</span>
<span class="c1"># in the Software without restriction, including without limitation the rights</span>
<span class="c1"># to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
<span class="c1"># copies of the Software, and to permit persons to whom the Software is</span>
<span class="c1"># furnished to do so, subject to the following conditions:</span>
<span class="c1">#</span>
<span class="c1"># The above copyright notice and this permission notice shall be included in all</span>
<span class="c1"># copies or substantial portions of the Software.</span>
<span class="c1">#</span>
<span class="c1"># THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
<span class="c1"># IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
<span class="c1"># FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
<span class="c1"># AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
<span class="c1"># LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
<span class="c1"># OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span>
<span class="c1"># SOFTWARE.</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;TTkAbstractScrollArea&#39;</span><span class="p">]</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkCore.constant</span> <span class="kn">import</span> <span class="n">TTkK</span>
<span class="c1"># from TermTk.TTkCore.log import TTkLog</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkCore.signal</span> <span class="kn">import</span> <span class="n">pyTTkSlot</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkWidgets.widget</span> <span class="kn">import</span> <span class="n">TTkWidget</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkWidgets.container</span> <span class="kn">import</span> <span class="n">TTkContainer</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkWidgets.scrollbar</span> <span class="kn">import</span> <span class="n">TTkScrollBar</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkLayouts.gridlayout</span> <span class="kn">import</span> <span class="n">TTkGridLayout</span>
<span class="kn">from</span> <span class="nn">TermTk.TTkAbstract.abstractscrollview</span> <span class="kn">import</span> <span class="n">TTkAbstractScrollViewInterface</span>
<div class="viewcode-block" id="TTkAbstractScrollArea"><a class="viewcode-back" href="../../../autogen.TermTk/TermTk.TTkAbstract.abstractscrollarea.html#TermTk.TTkAbstract.abstractscrollarea.TTkAbstractScrollArea">[docs]</a><span class="k">class</span> <span class="nc">TTkAbstractScrollArea</span><span class="p">(</span><span class="n">TTkContainer</span><span class="p">):</span>
<span class="vm">__slots__</span> <span class="o">=</span> <span class="p">(</span>
<span class="s1">&#39;_processing&#39;</span><span class="p">,</span> <span class="c1"># this flag is required to avoid unnecessary loop on edge cases</span>
<span class="s1">&#39;_viewport&#39;</span><span class="p">,</span>
<span class="s1">&#39;_verticalScrollBar&#39;</span><span class="p">,</span> <span class="s1">&#39;_verticalScrollBarPolicy&#39;</span><span class="p">,</span>
<span class="s1">&#39;_horizontalScrollBar&#39;</span><span class="p">,</span> <span class="s1">&#39;_horizontalScrollBarPolicy&#39;</span><span class="p">,)</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_processing</span> <span class="o">=</span> <span class="kc">False</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span> <span class="o">=</span> <span class="kc">None</span>
<span class="c1"># self.setLayout(TTkGridLayout())</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span> <span class="o">=</span> <span class="n">TTkScrollBar</span><span class="p">(</span><span class="n">orientation</span><span class="o">=</span><span class="n">TTkK</span><span class="o">.</span><span class="n">VERTICAL</span><span class="p">,</span> <span class="n">visible</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span> <span class="o">=</span> <span class="n">TTkScrollBar</span><span class="p">(</span><span class="n">orientation</span><span class="o">=</span><span class="n">TTkK</span><span class="o">.</span><span class="n">HORIZONTAL</span><span class="p">,</span> <span class="n">visible</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBarPolicy</span> <span class="o">=</span> <span class="n">kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;verticalScrollBarPolicy&quot;</span><span class="p">,</span> <span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAsNeeded</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBarPolicy</span> <span class="o">=</span> <span class="n">kwargs</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;horizontalScrollBarPolicy&quot;</span><span class="p">,</span><span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAsNeeded</span><span class="p">)</span>
<span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">addWidget</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">addWidget</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_resizeEvent</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_processing</span><span class="p">:</span> <span class="k">return</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_processing</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">w</span><span class="p">,</span><span class="n">h</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()</span>
<span class="n">vert</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">isVisible</span><span class="p">()</span> <span class="k">else</span> <span class="mi">0</span>
<span class="n">hori</span> <span class="o">=</span> <span class="mi">1</span> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">isVisible</span><span class="p">()</span> <span class="k">else</span> <span class="mi">0</span>
<span class="k">if</span> <span class="n">vert</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">setGeometry</span><span class="p">(</span><span class="n">w</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="n">h</span><span class="o">-</span><span class="n">hori</span><span class="p">)</span>
<span class="k">if</span> <span class="n">hori</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">setGeometry</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="n">h</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span><span class="n">w</span><span class="o">-</span><span class="n">vert</span><span class="p">,</span><span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">setGeometry</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="n">w</span><span class="o">-</span><span class="n">vert</span><span class="p">,</span><span class="n">h</span><span class="o">-</span><span class="n">hori</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_processing</span> <span class="o">=</span> <span class="kc">False</span>
<div class="viewcode-block" id="TTkAbstractScrollArea.resizeEvent"><a class="viewcode-back" href="../../../autogen.TermTk/TermTk.TTkAbstract.abstractscrollarea.html#TermTk.TTkAbstract.abstractscrollarea.TTkAbstractScrollArea.resizeEvent">[docs]</a> <span class="k">def</span> <span class="nf">resizeEvent</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">w</span><span class="p">:</span> <span class="nb">int</span><span class="p">,</span> <span class="n">h</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_resizeEvent</span><span class="p">()</span></div>
<span class="nd">@pyTTkSlot</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">_viewportChanged</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">isVisible</span><span class="p">():</span> <span class="k">return</span>
<span class="n">w</span><span class="p">,</span><span class="n">h</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()</span>
<span class="n">fw</span><span class="p">,</span> <span class="n">fh</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewFullAreaSize</span><span class="p">()</span>
<span class="n">dw</span><span class="p">,</span> <span class="n">dh</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewDisplayedSize</span><span class="p">()</span>
<span class="n">ox</span><span class="p">,</span> <span class="n">oy</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">getViewOffsets</span><span class="p">()</span>
<span class="k">if</span> <span class="mi">0</span> <span class="ow">in</span> <span class="p">[</span><span class="n">fw</span><span class="p">,</span><span class="n">fh</span><span class="p">,</span><span class="n">dw</span><span class="p">,</span><span class="n">dh</span><span class="p">]:</span>
<span class="k">return</span>
<span class="n">hpage</span> <span class="o">=</span> <span class="n">dw</span>
<span class="n">vpage</span> <span class="o">=</span> <span class="n">dh</span>
<span class="n">hrange</span> <span class="o">=</span> <span class="n">fw</span> <span class="o">-</span> <span class="n">dw</span>
<span class="n">vrange</span> <span class="o">=</span> <span class="n">fh</span> <span class="o">-</span> <span class="n">dh</span>
<span class="c1"># TTkLog.debug(f&quot;f:{fw,fh=}, d:{dw,dh=}, o:{ox,oy=}&quot;)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">setPageStep</span><span class="p">(</span><span class="n">vpage</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">setRange</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">vrange</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">setValue</span><span class="p">(</span><span class="n">oy</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">setPageStep</span><span class="p">(</span><span class="n">hpage</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">setRange</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">hrange</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">setValue</span><span class="p">(</span><span class="n">ox</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBarPolicy</span> <span class="o">==</span> <span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAsNeeded</span><span class="p">:</span>
<span class="k">if</span> <span class="n">h</span><span class="o">&lt;=</span><span class="mi">4</span> <span class="ow">or</span> <span class="n">w</span><span class="o">&lt;=</span><span class="mi">1</span> <span class="ow">or</span> <span class="n">vrange</span><span class="o">&lt;=</span><span class="mi">0</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">hide</span><span class="p">()</span>
<span class="k">elif</span> <span class="n">dh</span><span class="o">&gt;</span><span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">minimumHeight</span><span class="p">()</span><span class="o">+</span><span class="mi">1</span><span class="p">:</span>
<span class="c1"># we need enough space to display the bar to avoid endless loop</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
<span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBarPolicy</span> <span class="o">==</span> <span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAlwaysOn</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">hide</span><span class="p">()</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBarPolicy</span> <span class="o">==</span> <span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAsNeeded</span><span class="p">:</span>
<span class="k">if</span> <span class="n">w</span><span class="o">&lt;=</span><span class="mi">4</span> <span class="ow">or</span> <span class="n">h</span><span class="o">&lt;=</span><span class="mi">1</span> <span class="ow">or</span> <span class="n">hrange</span><span class="o">&lt;=</span><span class="mi">0</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">hide</span><span class="p">()</span>
<span class="k">elif</span> <span class="n">dw</span><span class="o">&gt;</span><span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">minimumWidth</span><span class="p">()</span><span class="o">+</span><span class="mi">1</span><span class="p">:</span>
<span class="c1"># we need enough space to display the bar to avoid endless loop</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
<span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBarPolicy</span> <span class="o">==</span> <span class="n">TTkK</span><span class="o">.</span><span class="n">ScrollBarAlwaysOn</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">hide</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_resizeEvent</span><span class="p">()</span>
<span class="nd">@pyTTkSlot</span><span class="p">(</span><span class="nb">int</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_vscrollMoved</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">):</span>
<span class="n">ox</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">getViewOffsets</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewMoveTo</span><span class="p">(</span><span class="n">ox</span><span class="p">,</span> <span class="n">val</span><span class="p">)</span>
<span class="nd">@pyTTkSlot</span><span class="p">(</span><span class="nb">int</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_hscrollMoved</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">):</span>
<span class="n">_</span><span class="p">,</span> <span class="n">oy</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">getViewOffsets</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewMoveTo</span><span class="p">(</span><span class="n">val</span><span class="p">,</span> <span class="n">oy</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">setViewport</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">viewport</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">viewport</span><span class="p">,</span> <span class="n">TTkAbstractScrollViewInterface</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">&quot;TTkAbstractScrollViewInterface is required in TTkAbstractScrollArea.setVewport(viewport)&quot;</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewChanged</span><span class="o">.</span><span class="n">disconnect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_viewportChanged</span><span class="p">)</span>
<span class="c1"># TODO: Remove this check once</span>
<span class="c1"># unified &quot;addWidget&quot; and &quot;addItem&quot; in the TTKGridLayout</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">viewport</span><span class="p">,</span> <span class="n">TTkWidget</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">removeWidget</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">removeItem</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span> <span class="o">=</span> <span class="n">viewport</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">viewChanged</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_viewportChanged</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBar</span><span class="o">.</span><span class="n">sliderMoved</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_vscrollMoved</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBar</span><span class="o">.</span><span class="n">sliderMoved</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_hscrollMoved</span><span class="p">)</span>
<span class="c1"># TODO: Remove this check once</span>
<span class="c1"># unified &quot;addWidget&quot; and &quot;addItem&quot; in the TTKGridLayout</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">viewport</span><span class="p">,</span> <span class="n">TTkWidget</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">addWidget</span><span class="p">(</span><span class="n">viewport</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">layout</span><span class="p">()</span><span class="o">.</span><span class="n">addItem</span><span class="p">(</span><span class="n">viewport</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_resizeEvent</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setVerticalScrollBarPolicy</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">policy</span><span class="p">):</span>
<span class="k">if</span> <span class="n">policy</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBarPolicy</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_verticalScrollBarPolicy</span> <span class="o">=</span> <span class="n">policy</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewportChanged</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">setHorizontalScrollBarPolicy</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">policy</span><span class="p">):</span>
<span class="k">if</span> <span class="n">policy</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBarPolicy</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_horizontalScrollBarPolicy</span> <span class="o">=</span> <span class="n">policy</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewportChanged</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">viewport</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span>
<span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">repaint</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">updateLayout</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">updateParent</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_viewport</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">repaint</span><span class="p">,</span> <span class="n">updateLayout</span><span class="p">,</span> <span class="n">updateParent</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">repaint</span><span class="p">,</span> <span class="n">updateLayout</span><span class="p">,</span> <span class="n">updateParent</span><span class="p">)</span></div>
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