Ubuntu系统下Sublime Text 2中fcitx中文输入法的解决方法

Linux版本为Ubuntu 13.04 beta 2，顺便安装了fcitx 搜狗输入法，但是发现在sublime text 2中无法输入中文，之前在Ubuntu 12.04.2中fcitx正常输入的，只是有一些小问题。

本着发现问题，解决问题的原则，咱就找解决方法呗，经过Google和论坛发帖，找到了解决方法。

Ubuntu 12.10 安装破解Sublime Text 2 http://www.linuxidc.com/Linux/2013-07/86898.htm

Ubuntu 13.04安装Sublime Text 2 http://www.linuxidc.com/Linux/2013-05/84228.htm

编码神器——Sublime Text 包管理工具及扩展大全 http://www.linuxidc.com/Linux/2013-10/91701.htm

如何开发 Sublime Text 2 的插件 http://www.linuxidc.com/Linux/2013-09/90046.htm

Windows Mac Linux下安装以及破解Sublime Text 2编辑器 http://www.linuxidc.com/Linux/2013-08/89452.htm

文本编辑器Sublime Text 使用体验 http://www.linuxidc.com/Linux/2013-08/89326.htm

编译共享内库

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 sublime_text
*/
#include
#include
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. 启动 Sublime Text 2

好了，现在执行下述命令启动 Sublime Text 2，就可以使用fcitx输入中文了！

LD_PRELOAD=./libsublime-imfix.so sublime_text

但是这样的话，我们每次都要在终端里面使用命令启动sublime text 2，这样很不方便，接下来我们还要通过修改sublime-text-2.desktop达到点击图标启动。

打开终端进入applications修改sublime-text-2.desktop

cd /usr/share/applications

sudo vim sublime-text-2.desktop

打开sublime-text-2.desktop后，将

Exec=/usr/bin/sublime-text-2 %F

修改为

Exec=bash -c 'LD_PRELOAD=/usr/lib/libsublime-imfix.so /usr/bin/sublime-text-2' %F

还有将

Exec=/usr/bin/sublime-text-2 --new-window

修改为

Exec=bash -c 'LD_PRELOAD=/usr/lib/libsublime-imfix.so /usr/bin/sublime-text-2' --new-window

好了，接下来你在dash中点击打开sublime text2吧，开始你的代码之旅吧。

更多Ubuntu相关信息见Ubuntu 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=2

本文永久更新链接地址：http://www.linuxidc.com/Linux/2014-06/103855.htm