magnifier-main_8c-source.html

在Linux下实现magnification功能

<a name="l00264"></a>00264                   <a class="code" href="magnifier_8c.html#ca7d287432d79d9d72aef38adb4fa3eb">magnifier_get_root</a> (magnifier),
<a name="l00265"></a>00265                   &amp;mouse_x_return,
<a name="l00266"></a>00266                   &amp;mouse_y_return,
<a name="l00267"></a>00267                   &amp;mask_return);
<a name="l00268"></a>00268           
<a name="l00269"></a>00269           <span class="keywordflow">if</span> (<a class="code" href="magnifier-main_8c.html#bbf254766520cad4d7fe189eb184194c">last_x</a> != mouse_x_return || <a class="code" href="magnifier-main_8c.html#31e24c11fe7b55913887a78bff6ed30e">last_y</a> != mouse_y_return)
<a name="l00270"></a>00270           {
<a name="l00271"></a>00271                   <a class="code" href="magnifier-main_8c.html#bbf254766520cad4d7fe189eb184194c">last_x</a> = mouse_x_return;
<a name="l00272"></a>00272                   <a class="code" href="magnifier-main_8c.html#31e24c11fe7b55913887a78bff6ed30e">last_y</a> = mouse_y_return;
<a name="l00273"></a>00273                   w = (magnifier-&gt;target_bounds.x2 - magnifier-&gt;target_bounds.x1);
<a name="l00274"></a>00274                   h = (magnifier-&gt;target_bounds.y2 - magnifier-&gt;target_bounds.y1);
<a name="l00275"></a>00275                   roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#da72b580c4e14d8f1dcd85b2da3a8759">x1</a> = mouse_x_return;
<a name="l00276"></a>00276                   roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#24de0d98768b0b42dc53ab51950760c0">y1</a> = mouse_y_return;
<a name="l00277"></a>00277                   roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#721fd6fb9a4c3c6c3813402b31de633a">x2</a> = roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#da72b580c4e14d8f1dcd85b2da3a8759">x1</a> + 1;
<a name="l00278"></a>00278                   roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#3ba20b4c1f0db87a1b9f21169e20b5f3">y2</a> = roi.<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#24de0d98768b0b42dc53ab51950760c0">y1</a> + 1;
<a name="l00279"></a>00279                   
<a name="l00280"></a>00280                   zoom_regions =
<a name="l00281"></a>00281                           <a class="code" href="GNOME__Magnifier-stubs_8c.html#c33a7910d9b85a8028dcca5cbd95641d">GNOME_Magnifier_Magnifier_getZoomRegions</a> (
<a name="l00282"></a>00282                                   BONOBO_OBJREF (magnifier),
<a name="l00283"></a>00283                                   &amp;ev);
<a name="l00284"></a>00284                   <span class="keywordflow">if</span> (zoom_regions &amp;&amp; (zoom_regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#1c9d5e101124da8d205b44b0cec055fd">_length</a> &gt; 0))
<a name="l00285"></a>00285                   {
<a name="l00286"></a>00286                           <span class="keywordtype">int</span> i;
<a name="l00287"></a>00287                           <span class="keywordflow">for</span> (i = 0; i &lt; zoom_regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#1c9d5e101124da8d205b44b0cec055fd">_length</a>; ++i)
<a name="l00288"></a>00288                           {
<a name="l00289"></a>00289                                   <span class="comment">/* fprintf (stderr, "panning region %d\n", i);*/</span>
<a name="l00290"></a>00290                                   zoom_region =
<a name="l00291"></a>00291                                           CORBA_Object_duplicate (
<a name="l00292"></a>00292                                                   ( (CORBA_Object *)
<a name="l00293"></a>00293                                                     (zoom_regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#83bd7017c176eb283bae20b433c602dd">_buffer</a>))[i], &amp;ev);
<a name="l00294"></a>00294                                   if (zoom_region != CORBA_OBJECT_NIL) {
<a name="l00295"></a>00295                                           <a class="code" href="GNOME__Magnifier-stubs_8c.html#83228cd517d6b914e6b19ed5ead36171">GNOME_Magnifier_ZoomRegion_setROI</a> (zoom_region,
<a name="l00296"></a>00296                                                                              &amp;roi,
<a name="l00297"></a>00297                                                                              &amp;ev);
<a name="l00298"></a>00298                                   } <span class="keywordflow">else</span> fprintf (stderr, <span class="stringliteral">"nil region!\n"</span>);
<a name="l00299"></a>00299                           }
<a name="l00300"></a>00300                   }
<a name="l00301"></a>00301           }
<a name="l00302"></a>00302           <span class="keywordflow">return</span> TRUE;
<a name="l00303"></a>00303   }
<a name="l00304"></a>00304   
<a name="l00305"></a>00305   <span class="keywordflow">return</span> FALSE;
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307 
<a name="l00308"></a>00308 <span class="keyword">static</span> <span class="keywordtype">int</span>
<a name="l00309"></a><a class="code" href="magnifier-main_8c.html#ea0d2476dd6ff120c88d930c0a529996">00309</a> <a class="code" href="magnifier-main_8c.html#ea0d2476dd6ff120c88d930c0a529996">magnifier_main_refresh_all</a> (gpointer data)
<a name="l00310"></a>00310 {
<a name="l00311"></a>00311         <span class="keywordtype">int</span> i;
<a name="l00312"></a>00312         <a class="code" href="structMagnifier.html">Magnifier</a> *magnifier = data;
<a name="l00313"></a>00313         CORBA_any *dirty_bounds_any;
<a name="l00314"></a>00314         CORBA_Environment ev;
<a name="l00315"></a>00315         <a class="code" href="GNOME__Magnifier_8h.html#7804bd3fd4edd2aae1f9daf2dfc94524">Bonobo_PropertyBag</a> properties;
<a name="l00316"></a>00316         <a class="code" href="structGNOME__Magnifier__RectBounds__type.html">GNOME_Magnifier_RectBounds</a> *dirty_bounds;
<a name="l00317"></a>00317         <a class="code" href="structCORBA__sequence__CORBA__Object.html">GNOME_Magnifier_ZoomRegionList</a> *regions;
<a name="l00318"></a>00318         
<a name="l00319"></a>00319         CORBA_exception_init (&amp;ev);
<a name="l00320"></a>00320 
<a name="l00321"></a>00321         <span class="keywordflow">if</span> (!<a class="code" href="magnifier_8h.html#971fc276bc83e8071c4b450136ac5d5c">IS_MAGNIFIER</a> (magnifier))
<a name="l00322"></a>00322                 <span class="keywordflow">return</span> FALSE;
<a name="l00323"></a>00323         
<a name="l00324"></a>00324         regions = <a class="code" href="GNOME__Magnifier-stubs_8c.html#c33a7910d9b85a8028dcca5cbd95641d">GNOME_Magnifier_Magnifier_getZoomRegions</a> (
<a name="l00325"></a>00325                 BONOBO_OBJREF (magnifier),
<a name="l00326"></a>00326                 &amp;ev);
<a name="l00327"></a>00327 
<a name="l00328"></a>00328 <span class="preprocessor">#ifdef DEBUG_REFRESH</span>
<a name="l00329"></a>00329 <span class="preprocessor"></span>        fprintf (stderr, <span class="stringliteral">"refreshing %d regions\n"</span>, regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#1c9d5e101124da8d205b44b0cec055fd">_length</a>);
<a name="l00330"></a>00330 <span class="preprocessor">#endif</span>
<a name="l00331"></a>00331 <span class="preprocessor"></span>
<a name="l00332"></a>00332         properties = <a class="code" href="GNOME__Magnifier-stubs_8c.html#62aeeb56b52c87b55cdf6ab803040dea">GNOME_Magnifier_Magnifier_getProperties</a> (BONOBO_OBJREF (magnifier), &amp;ev);
<a name="l00333"></a>00333 
<a name="l00334"></a>00334         dirty_bounds_any = <a class="code" href="GNOME__Magnifier-stubs_8c.html#d092cc0c337ec7d6fe72b30835083188">Bonobo_PropertyBag_getValue</a> (properties, <span class="stringliteral">"source-display-bounds"</span>, &amp;ev);
<a name="l00335"></a>00335         <span class="keywordflow">if</span> (BONOBO_EX (&amp;ev)) {
<a name="l00336"></a>00336                 g_warning (<span class="stringliteral">"Error getting source-display-bounds"</span>);
<a name="l00337"></a>00337                 bonobo_main_quit ();
<a name="l00338"></a>00338                 <span class="keywordflow">return</span> FALSE;
<a name="l00339"></a>00339         }
<a name="l00340"></a>00340 
<a name="l00341"></a>00341         dirty_bounds = (<a class="code" href="structGNOME__Magnifier__RectBounds__type.html">GNOME_Magnifier_RectBounds</a> *) dirty_bounds_any-&gt;_value;
<a name="l00342"></a>00342 
<a name="l00343"></a>00343           fprintf (stderr, <span class="stringliteral">"region to update: %d %d %d %d\n"</span>,
<a name="l00344"></a>00344                  dirty_bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#da72b580c4e14d8f1dcd85b2da3a8759">x1</a>, dirty_bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#24de0d98768b0b42dc53ab51950760c0">y1</a>, dirty_bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#721fd6fb9a4c3c6c3813402b31de633a">x2</a>, dirty_bounds-&gt;<a class="code" href="structGNOME__Magnifier__RectBounds__type.html#3ba20b4c1f0db87a1b9f21169e20b5f3">y2</a>);
<a name="l00345"></a>00345 
<a name="l00346"></a>00346         <span class="keywordflow">for</span> (i = 0; i &lt; regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#1c9d5e101124da8d205b44b0cec055fd">_length</a>; ++i)
<a name="l00347"></a>00347                 <a class="code" href="GNOME__Magnifier-stubs_8c.html#2ddf6526a713e2daaa1894da204c1a40">GNOME_Magnifier_ZoomRegion_markDirty</a> (
<a name="l00348"></a>00348                         regions-&gt;<a class="code" href="structCORBA__sequence__CORBA__Object.html#83bd7017c176eb283bae20b433c602dd">_buffer</a> [i], dirty_bounds, &amp;ev);
<a name="l00349"></a>00349 
<a name="l00350"></a>00350         bonobo_object_release_unref (properties, NULL);
<a name="l00351"></a>00351 
<a name="l00352"></a>00352         <span class="keywordflow">return</span> TRUE;
<a name="l00353"></a>00353 }
<a name="l00354"></a>00354 
<a name="l00355"></a>00355 <span class="keywordtype">int</span>
<a name="l00356"></a><a class="code" href="magnifier-main_8c.html#3c04138a5bfe5d72780bb7e82a18e627">00356</a> <a class="code" href="magnifier-main_8c.html#3c04138a5bfe5d72780bb7e82a18e627">main</a> (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>** argv)
<a name="l00357"></a>00357 {
<a name="l00358"></a>00358   GOptionContext *context;