gmag-events_8c-source.html

在Linux下实现magnification功能

<a name="l00426"></a>00426         elem = g_queue_peek_head_link (mag_windows_list);
<a name="l00427"></a>00427         <span class="keywordflow">while</span> (elem) {
<a name="l00428"></a>00428                 pgmag_win = (<a class="code" href="struct__GmagWin.html">GmagWinPtr</a>) elem-&gt;data;
<a name="l00429"></a>00429                 if (pgmag_win-&gt;damaged) {
<a name="l00430"></a>00430                         gmag_events_paint_window (pgmag_win,
<a name="l00431"></a>00431                                                   pgmag_win-&gt;damaged_region);
<a name="l00432"></a>00432                         XFixesSetRegion (dpy_conn,
<a name="l00433"></a>00433                                          pgmag_win-&gt;damaged_region, 0, 0);
<a name="l00434"></a>00434                         pgmag_win-&gt;damaged = FALSE;
<a name="l00435"></a>00435                 }
<a name="l00436"></a>00436 
<a name="l00437"></a>00437                 elem = g_list_next (elem);
<a name="l00438"></a>00438         }
<a name="l00439"></a>00439 }
<a name="l00440"></a>00440 
<a name="l00441"></a>00441 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00442"></a>00442 gmag_events_circulate_notify_handler (XEvent *ev)
<a name="l00443"></a>00443 {
<a name="l00444"></a>00444         GList      *elem;
<a name="l00445"></a>00445         <a class="code" href="struct__GmagWin.html">GmagWinPtr</a>  pgmag_win;
<a name="l00446"></a>00446 
<a name="l00447"></a>00447 <span class="preprocessor">#ifdef COMPOSITE_DEBUG</span>
<a name="l00448"></a>00448 <span class="preprocessor"></span>        printf (<span class="stringliteral">"Received CirculateNotify event: 0x%x\n"</span>,
<a name="l00449"></a>00449                 (guint) ev-&gt;xcirculate.window);
<a name="l00450"></a>00450 <span class="preprocessor">#endif </span><span class="comment">/* COMPOSITE_DEBUG */</span>
<a name="l00451"></a>00451         <span class="keywordflow">if</span> (ev-&gt;xcirculate.window == <a class="code" href="gmag-events_8c.html#d64ddbbd54eee237f99ba13f9d5c8655">mag_window</a>) {
<a name="l00452"></a>00452 <span class="preprocessor">#ifdef HAVE_OVERLAY</span>
<a name="l00453"></a>00453 <span class="preprocessor"></span><span class="preprocessor">#ifdef COMPOSITE_DEBUG</span>
<a name="l00454"></a>00454 <span class="preprocessor"></span>                printf (<span class="stringliteral">"Overlay window = 0x%x\n"</span>,
<a name="l00455"></a>00455                         (guint) gmag_events_overlay_window);
<a name="l00456"></a>00456 <span class="preprocessor">#endif </span><span class="comment">/* COMPOSITE_DEBUG */</span>
<a name="l00457"></a>00457 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_OVERLAY */</span>
<a name="l00458"></a>00458                 <span class="keywordflow">return</span>;
<a name="l00459"></a>00459         }
<a name="l00460"></a>00460         elem = g_queue_find_custom (mag_windows_list,
<a name="l00461"></a>00461                                     (gconstpointer) ev-&gt;xcirculate.window,
<a name="l00462"></a>00462                                     (GCompareFunc) gmag_events_g_compare_func);
<a name="l00463"></a>00463         <span class="keywordflow">if</span> (elem) {
<a name="l00464"></a>00464                 pgmag_win = (<a class="code" href="struct__GmagWin.html">GmagWinPtr</a>) elem-&gt;data;
<a name="l00465"></a>00465                 g_queue_remove (mag_windows_list, pgmag_win);
<a name="l00466"></a>00466                 <span class="keywordflow">if</span> (ev-&gt;xcirculate.place == PlaceOnTop) {
<a name="l00467"></a>00467                         g_queue_push_tail (mag_windows_list,
<a name="l00468"></a>00468                                            pgmag_win);
<a name="l00469"></a>00469                         <span class="keywordflow">if</span> (pgmag_win-&gt;attr.map_state == IsViewable) {
<a name="l00470"></a>00470                                 XFixesSubtractRegion (
<a name="l00471"></a>00471                                         dpy_conn,
<a name="l00472"></a>00472                                         tmp_region, pgmag_win-&gt;win_region,
<a name="l00473"></a>00473                                         pgmag_win-&gt;clip);
<a name="l00474"></a>00474                                 XFixesUnionRegion (
<a name="l00475"></a>00475                                         dpy_conn,
<a name="l00476"></a>00476                                         exp_region, exp_region, tmp_region);
<a name="l00477"></a>00477                         }
<a name="l00478"></a>00478                 } <span class="keywordflow">else</span> {
<a name="l00479"></a>00479                         g_queue_push_head (mag_windows_list,
<a name="l00480"></a>00480                                            pgmag_win);
<a name="l00481"></a>00481                         <span class="keywordflow">if</span> (pgmag_win-&gt;attr.map_state == IsViewable)
<a name="l00482"></a>00482                                 XFixesUnionRegion (
<a name="l00483"></a>00483                                         dpy_conn,
<a name="l00484"></a>00484                                         exp_region, exp_region,
<a name="l00485"></a>00485                                         pgmag_win-&gt;clip);
<a name="l00486"></a>00486                 }
<a name="l00487"></a>00487         }
<a name="l00488"></a>00488 }
<a name="l00489"></a>00489 
<a name="l00490"></a>00490 <span class="keyword">static</span> <span class="keywordtype">void</span>
<a name="l00491"></a>00491 gmag_events_configure_notify_handler (XEvent *ev)
<a name="l00492"></a>00492 {
<a name="l00493"></a>00493         GList      *elem;
<a name="l00494"></a>00494         <a class="code" href="struct__GmagWin.html">GmagWinPtr</a>  pgmag_win;
<a name="l00495"></a>00495         
<a name="l00496"></a>00496 <span class="preprocessor">#ifdef COMPOSITE_DEBUG</span>
<a name="l00497"></a>00497 <span class="preprocessor"></span>        printf (<span class="stringliteral">"Received ConfigureNotify event: 0x%x\n"</span>,
<a name="l00498"></a>00498                 (guint) ev-&gt;xconfigure.window);
<a name="l00499"></a>00499 <span class="preprocessor">#endif </span><span class="comment">/* COMPOSITE_DEBUG */</span>
<a name="l00500"></a>00500         <span class="keywordflow">if</span> (ev-&gt;xconfigure.window == <a class="code" href="gmag-events_8c.html#d64ddbbd54eee237f99ba13f9d5c8655">mag_window</a>) {
<a name="l00501"></a>00501 <span class="preprocessor">#ifdef HAVE_OVERLAY</span>
<a name="l00502"></a>00502 <span class="preprocessor"></span><span class="preprocessor">#ifdef COMPOSITE_DEBUG</span>
<a name="l00503"></a>00503 <span class="preprocessor"></span>                printf (<span class="stringliteral">"Overlay window = 0x%x\n"</span>,
<a name="l00504"></a>00504                         (guint) gmag_events_overlay_window);
<a name="l00505"></a>00505 <span class="preprocessor">#endif </span><span class="comment">/* COMPOSITE_DEBUG */</span>
<a name="l00506"></a>00506 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_OVERLAY */</span>
<a name="l00507"></a>00507                 <span class="keywordflow">return</span>;
<a name="l00508"></a>00508         }
<a name="l00509"></a>00509         elem = g_queue_find_custom (mag_windows_list,
<a name="l00510"></a>00510                                     (gconstpointer) ev-&gt;xconfigure.window,
<a name="l00511"></a>00511                                     (GCompareFunc) gmag_events_g_compare_func);
<a name="l00512"></a>00512         <span class="keywordflow">if</span> (elem) {
<a name="l00513"></a>00513                 pgmag_win = (<a class="code" href="struct__GmagWin.html">GmagWinPtr</a>) elem-&gt;data;
<a name="l00514"></a>00514                 if ((pgmag_win-&gt;attr.x != ev-&gt;xconfigure.x) ||
<a name="l00515"></a>00515                     (pgmag_win-&gt;attr.y != ev-&gt;xconfigure.y) ||
<a name="l00516"></a>00516                     (pgmag_win-&gt;attr.width != ev-&gt;xconfigure.width) ||
<a name="l00517"></a>00517                     (pgmag_win-&gt;attr.height != ev-&gt;xconfigure.height) ||
<a name="l00518"></a>00518                     (pgmag_win-&gt;attr.border_width !=
<a name="l00519"></a>00519                      ev-&gt;xconfigure.border_width)) {
<a name="l00520"></a>00520                         <span class="comment">/* If an attribute of the window has changed we could</span>
<a name="l00521"></a>00521 <span class="comment">                         * have an exposed area that is not reported due to the</span>
<a name="l00522"></a>00522 <span class="comment">                         * overlay window. So we subtract the new region, from</span>
<a name="l00523"></a>00523 <span class="comment">                         * the old one, and we have the value of the exposed</span>
<a name="l00524"></a>00524 <span class="comment">                         * region that must be repainted.</span>
<a name="l00525"></a>00525 <span class="comment">                         */</span>
<a name="l00526"></a>00526                         pgmag_win-&gt;attr.x = ev-&gt;xconfigure.x;
<a name="l00527"></a>00527                         pgmag_win-&gt;attr.y = ev-&gt;xconfigure.y;
<a name="l00528"></a>00528                         pgmag_win-&gt;attr.width = ev-&gt;xconfigure.width;
<a name="l00529"></a>00529                         pgmag_win-&gt;attr.height = ev-&gt;xconfigure.height;
<a name="l00530"></a>00530                         pgmag_win-&gt;attr.border_width =
<a name="l00531"></a>00531                                 ev-&gt;xconfigure.border_width;
<a name="l00532"></a>00532                               
<a name="l00533"></a>00533                         <span class="keywordflow">if</span> (pgmag_win-&gt;attr.map_state == IsViewable) {
<a name="l00534"></a>00534                                 XFixesCopyRegion (
<a name="l00535"></a>00535                                         dpy_conn,
<a name="l00536"></a>00536                                         old_region, pgmag_win-&gt;clip);
<a name="l00537"></a>00537                                 gmag_events_calculate_window_clip (pgmag_win);
<a name="l00538"></a>00538                                 XFixesCopyRegion (
<a name="l00539"></a>00539                                         dpy_conn,
<a name="l00540"></a>00540                                         new_region, pgmag_win-&gt;clip);
<a name="l00541"></a>00541                                 XFixesUnionRegion (
<a name="l00542"></a>00542                                         dpy_conn,
<a name="l00543"></a>00543                                         exp_region, exp_region, old_region);
<a name="l00544"></a>00544                                 XFixesUnionRegion (
<a name="l00545"></a>00545                                         dpy_conn,
<a name="l00546"></a>00546                                         exp_region, exp_region, new_region);
<a name="l00547"></a>00547                         }
<a name="l00548"></a>00548                 }
<a name="l00549"></a>00549                 <span class="keywordflow">if</span> (!ev-&gt;xconfigure.above) {
<a name="l00550"></a>00550                         g_queue_remove (mag_windows_list, pgmag_win);
<a name="l00551"></a>00551                         g_queue_push_head (mag_windows_list,
<a name="l00552"></a>00552                                            pgmag_win);
<a name="l00553"></a>00553                         <span class="keywordflow">if</span> (pgmag_win-&gt;attr.map_state == IsViewable) {
<a name="l00554"></a>00554                                 XFixesUnionRegion (
<a name="l00555"></a>00555                                         dpy_conn,
<a name="l00556"></a>00556                                         exp_region, exp_region,
<a name="l00557"></a>00557                                         pgmag_win-&gt;win_region);
<a name="l00558"></a>00558                         }
<a name="l00559"></a>00559                 } <span class="keywordflow">else</span> {
<a name="l00560"></a>00560                         elem = g_queue_find_custom (
<a name="l00561"></a>00561                                 mag_windows_list,
<a name="l00562"></a>00562                                 (gconstpointer) ev-&gt;xconfigure.above,
<a name="l00563"></a>00563                                 (GCompareFunc) gmag_events_g_compare_func);
<a name="l00564"></a>00564                         <span class="keywordflow">if</span> (elem) {
<a name="l00565"></a>00565                                 g_queue_remove (mag_windows_list,
<a name="l00566"></a>00566                                                 pgmag_win);
<a name="l00567"></a>00567                                 g_queue_insert_after (mag_windows_list,
<a name="l00568"></a>00568                                                       elem, pgmag_win);
<a name="l00569"></a>00569                                 <span class="keywordflow">if</span> (pgmag_win-&gt;attr.map_state == IsViewable) {
<a name="l00570"></a>00570                                         XFixesUnionRegion (
<a name="l00571"></a>00571                                                 dpy_conn,
<a name="l00572"></a>00572                                                 exp_region, exp_region,
<a name="l00573"></a>00573                                                 pgmag_win-&gt;win_region);
<a name="l00574"></a>00574                                 }