/*

 sublime-imfix.c

 Use LD_PRELOAD to interpose some function to fix sublime input method support for linux.

 By Cjacker Huang <jianzhong.huang at i-soft.com.cn>

 gcc -shared -o libsublime-imfix.so sublime_imfix.c  `pkg-config --libs --cflags gtk+-2.0` -fPIC

 LD_PRELOAD=./libsublime-imfix.so sublime_text

 */

 #include <gtk/gtk.h>

 #include <gdk/gdkx.h>

 typedef GdkSegment GdkRegionBox;

 struct _GdkRegion

 {

   long size;

   long numRects;

   GdkRegionBox *rects;

   GdkRegionBox extents;

 };

 GtkIMContext *local_context;

 void

 gdk_region_get_clipbox (const GdkRegion *region,

             GdkRectangle    *rectangle)

 {

   g_return_if_fail (region != NULL);

   g_return_if_fail (rectangle != NULL);

   rectangle->x = region->extents.x1;

   rectangle->y = region->extents.y1;

   rectangle->width = region->extents.x2 - region->extents.x1;

   rectangle->height = region->extents.y2 - region->extents.y1;

   GdkRectangle rect;

   rect.x = rectangle->x;

   rect.y = rectangle->y;

   rect.width = ;

   rect.height = rectangle->height;

   //The caret width is 2;

   //Maybe sometimes we will make a mistake, but for most of the time, it should be the caret.

   if(rectangle->width ==  && GTK_IS_IM_CONTEXT(local_context)) {

         gtk_im_context_set_cursor_location(local_context, rectangle);

   }

 }

 //this is needed, for example, if you input something in file dialog and return back the edit area

 //context will lost, so here we set it again.

 static GdkFilterReturn event_filter (GdkXEvent *xevent, GdkEvent *event, gpointer im_context)

 {

     XEvent *xev = (XEvent *)xevent;

     if(xev->type == KeyRelease && GTK_IS_IM_CONTEXT(im_context)) {

        GdkWindow * win = g_object_get_data(G_OBJECT(im_context),"window");

        if(GDK_IS_WINDOW(win))

          gtk_im_context_set_client_window(im_context, win);

     }

     return GDK_FILTER_CONTINUE;

 }

 void gtk_im_context_set_client_window (GtkIMContext *context,

           GdkWindow    *window)

 {

   GtkIMContextClass *klass;

   g_return_if_fail (GTK_IS_IM_CONTEXT (context));

   klass = GTK_IM_CONTEXT_GET_CLASS (context);

   if (klass->set_client_window)

     klass->set_client_window (context, window);

   if(!GDK_IS_WINDOW (window))

     return;

   g_object_set_data(G_OBJECT(context),"window",window);

   int width = gdk_window_get_width(window);

   int height = gdk_window_get_height(window);

   if(width !=  && height !=) {

     gtk_im_context_focus_in(context);

     local_context = context;

   }

   gdk_window_add_filter (window, event_filter, context);

 }

 sudo apt-get install build-essential

 sudo apt-get install libgtk2.-dev

 gcc -shared -o libsublime-imfix.so sublime_imfix.c  `pkg-config --libs --cflags gtk+-2.0` -fPIC

 LD_PRELOAD=./libsublime-imfix.so ./sublime_text

 alias sublime='LD_PRELOAD=~/Sublime_Text_2/libsublime-imfix.so ~/Sublime_Text_2/sublime_text'