排忧解难之Ubuntu 安装 Sublime text 解决搜狗输入法问题

Ubuntu安装Sublime text解决搜狗输入法问题

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环境说明：Ubuntu 16.04 LTS版本，安装Sublime text 3，需要解决不能使用搜狗输入法的问题。

安装Sublime text 很简单，参照官网教程很容易装上，但是会出现无法用搜狗输入法输入中文的问题。

1. 创建如下源文件

   cat >> ~/sublime_imfix.c <<EOF
   /*
   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 = 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); 
   }
   EOF

2. 安装编译环境

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

3. 编译为共享库

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

4. 测试效果

   LD_PRELOAD=./libsublime-imfix.so subl

5. 编辑Entry文件

   关键是修改三个Exec项值，注意实际路径和英文双引号问题。

   cd /usr/share/applications
   sudo vi sublime_text.desktop
   [Desktop Entry]
   Version=1.0
   Type=Application
   Name=Sublime Text
   GenericName=Text Editor
   Comment=Sophisticated text editor for code, markup and prose
   Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so /opt/sublime_text/sublime_text %F"
   Terminal=false
   MimeType=text/plain;
   Icon=sublime-text
   Categories=TextEditor;Development;
   StartupNotify=true
   Actions=Window;Document;
   
   [Desktop Action Window]
   Name=New Window
   Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so exec /opt/sublime_text/sublime_text -n"
   OnlyShowIn=Unity;
   
   [Desktop Action Document]
   Name=New File
   Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so exec /opt/sublime_text/sublime_text --command new_file"
   OnlyShowIn=Unity;

   至此，软件已能正常输入中文，但还存在输入框不跟随的问题，目前没找到合适办法，凑合着用吧。希望Sublime text官方能做出优化。
   ​

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