wg__listbox_8cpp-source.html

一个小巧的嵌入式图形系统wGUI, 可以用VC编译

00227                {
00228                     <span class="keywordflow">switch</span> (pKeyMsg-&gt;<a class="code" href="classwGui_1_1CKeyboardMessage.html#m2">Key</a>)
00229                     {
00230                          <span class="keywordflow">case</span> SDLK_DOWN:
00231                          {
00232                               <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> + 1 &lt; <a class="code" href="classwGui_1_1CListBox.html#a8">Size</a>())
00233                               {
00234                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>++;
00235                                    <span class="keywordtype">int</span> diff = <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> - <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a6">GetPosition</a>();
00236                                    <a class="code" href="classwGui_1_1CRect.html">CRect</a> ClientRect(<a class="code" href="classwGui_1_1CWindow.html#a5">GetClientRect</a>());
00237                                    <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CListBox.html#n2">m_iItemHeight</a> * (<a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a6">GetPosition</a>() + diff + 1) &gt; (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>) ClientRect.<a class="code" href="classwGui_1_1CRect.html#a24">Height</a>())
00238                                    {
00239                                         <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a5">SetPosition</a>(<a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a6">GetPosition</a>() + 1);
00240                                    }
00241 
00242                                    <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00243                                    bHandled = <span class="keyword">true</span>;
00244                               }
00245                               <span class="keywordflow">break</span>;
00246                          }
00247                          <span class="keywordflow">case</span> SDLK_UP:
00248                          {
00249                               <span class="keywordflow">if</span> ( <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> &gt; 0 )
00250                               {
00251                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>--;
00252                                    <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> &lt; <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a6">GetPosition</a>())
00253                                    {
00254                                         <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a5">SetPosition</a>(<a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a6">GetPosition</a>() - 1);
00255                                    }
00256                                    <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00257                                    bHandled = <span class="keyword">true</span>;
00258                               }
00259                               <span class="keywordflow">break</span>;
00260                          }
00261                          <span class="keywordflow">case</span> SDLK_PAGEDOWN:
00262                          {
00263                               <a class="code" href="classwGui_1_1CRect.html">CRect</a> ClientRect(<a class="code" href="classwGui_1_1CWindow.html#a5">GetClientRect</a>());
00264                               <span class="keywordtype">int</span> nSize = <a class="code" href="classwGui_1_1CListBox.html#a8">Size</a>() - 1;
00265                               <span class="keywordtype">int</span> nItemsPerPage = ClientRect.<a class="code" href="classwGui_1_1CRect.html#a24">Height</a>() / <a class="code" href="classwGui_1_1CListBox.html#n2">m_iItemHeight</a>;
00266                               <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> + nItemsPerPage &lt; nSize)
00267                               {
00268                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> += nItemsPerPage;
00269                               }
00270                               <span class="keywordflow">else</span>
00271                               {
00272                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> = nSize;
00273                               }
00274                               <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a5">SetPosition</a>(<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>);
00275                               <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00276                               bHandled=<span class="keyword">true</span>;
00277                               <span class="keywordflow">break</span>;
00278                          }
00279                          <span class="keywordflow">case</span> SDLK_PAGEUP:
00280                          {
00281                               <a class="code" href="classwGui_1_1CRect.html">CRect</a> ClientRect(<a class="code" href="classwGui_1_1CWindow.html#a5">GetClientRect</a>());
00282                               <span class="keywordtype">int</span> nItemsPerPage = ClientRect.<a class="code" href="classwGui_1_1CRect.html#a24">Height</a>() / <a class="code" href="classwGui_1_1CListBox.html#n2">m_iItemHeight</a>;
00283                               <span class="keywordflow">if</span> (<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> - nItemsPerPage &gt; 0)
00284                               {
00285                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> -= nItemsPerPage;
00286                               }
00287                               <span class="keywordflow">else</span>
00288                               {
00289                                    <a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a> = 0;
00290                               }
00291                               <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>-&gt;<a class="code" href="classwGui_1_1CScrollBar.html#a5">SetPosition</a>(<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>);
00292                               <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00293                               bHandled=<span class="keyword">true</span>;
00294                               <span class="keywordflow">break</span>;
00295                          }
00296                          <span class="keywordflow">case</span> SDLK_SPACE:
00297                          {
00298                               <span class="keywordflow">if</span> (! <a class="code" href="classwGui_1_1CListBox.html#n4">m_Items</a>.empty())
00299                               {
00300                                    <a class="code" href="classwGui_1_1CListBox.html#a10">SetSelection</a>(<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>, !<a class="code" href="classwGui_1_1CListBox.html#a9">IsSelected</a>(<a class="code" href="classwGui_1_1CListBox.html#n3">m_iFocusedItem</a>));
00301                                    <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00302                               }
00303                               bHandled = <span class="keyword">true</span>;
00304                               <span class="keywordflow">break</span>;
00305                          }
00306                          <span class="keywordflow">default</span>:
00307                          {
00308                               bHandled=<span class="keyword">false</span>;
00309                               <span class="keywordflow">break</span>;
00310                          }
00311                     }
00312                }
00313                <span class="keywordflow">break</span>;
00314           }
00315           <span class="keywordflow">case</span> CMessage::CTRL_VALUECHANGE:
00316           <span class="keywordflow">case</span> CMessage::CTRL_VALUECHANGING:
00317           {
00318                <span class="keywordflow">if</span> (pMessage-&gt;<a class="code" href="classwGui_1_1CMessage.html#a4">Source</a>() == <a class="code" href="classwGui_1_1CListBox.html#n1">m_pVScrollbar</a>)
00319                {
00320                     <a class="code" href="classwGui_1_1CWindow.html#a23">StartDrawProc</a>();
00321                     bHandled = <span class="keyword">true</span>;
00322                }
00323                <span class="keywordflow">break</span>;
00324           }
00325           <span class="keywordflow">default</span> :
00326                bHandled = CWindow::HandleMessage(pMessage);
00327                <span class="keywordflow">break</span>;
00328           }
00329      }
00330 
00331      <span class="keywordflow">return</span> bHandled;
00332 }
00333 
00334 }
</pre></div><hr><address style="align: right;"><small>Generated on Sat Oct 25 12:43:23 2003 for wGui by
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