Linux下sublime text中文输入问题

1. 保存下述代码为 sublime-imfix.c 文件

   /*
   sublime-imfix.c
   Use LD_PRELOAD to interpose some function to fix sublime input method support for linux.
   By Cjacker Huang
    
   gcc -shared -o libsublime-imfix.so sublime-imfix.c `pkg-config --libs --cflags gtk+-2.0` -fPIC
   LD_PRELOAD=./libsublime-imfix.so subl
   */
   #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 = 0;
     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 == 2 && 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 != 0 && height !=0) {
       gtk_im_context_focus_in(context);
       local_context = context;
     }
     gdk_window_add_filter (window, event_filter, context);
   }

2. 安装C/C++的编译环境和gtk,libgtk2.0-dev

   sudo apt-get install build-essential sudo apt-get install libgtk2.0-dev

3. 编译共享内库

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

4. 设置 LD_PRELOAD 并启动 Sublime Text

   LD_PRELOAD=./libsublime-imfix.so subl

5. 修改 /usr/share/applications/sublime_text.desktop 为

   [Desktop Entry]
   [...]
   Exec=env LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so /opt/sublime_text/sublime_text %F
   [...]
    
   [Desktop Action Window]
   [...]
   Exec=env LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so /opt/sublime_text/sublime_text -n
   [...]
    
   [Desktop Action Document]
   [...]
   Exec=env LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so /opt/sublime_text/sublime_text --command new_file
   [...]

   不要忘了把 libsublime-imfix.so 放到 /opt/sublime_text/ 中

6. 修改 /usr/bin/subl 为

   #!/bin/sh
    
   export LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so
   exec /opt/sublime_text/sublime_text "$@"