Ubuntu下Sublime Text 3无法输入中文的解决方案

1. 保存下面的代码到文件sublime_imfix.c中：

/*
 * 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); 
}

2. 将这个源代码编译成共享库libsublime-imfix.so。

命令：

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

3. 将libsublime-imfix.so拷贝到sublime_text所在的目录。

一般是：

sudo mv libsublime-imfix.so /opt/sublime_text/

4. 修改/usr/bin/subl的内容。

将原内容

#!/bin/sh
exec /opt/sublime_text/sublime_text "$@"

修改为：

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

这样，在命令行中执行subl将可以使用中文输入法。

5. 修改sublime_text.desktop的内容。

打开文件：

sudo gedit /usr/share/applications/sublime_text.desktop

将[Desktop Entry]中的字符串

Exec=/opt/sublime_text/sublime_text %F

修改为：

Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so exec /opt/sublime_text/sublime_text %F"

将[Desktop Action Window]中的字符串

Exec=/opt/sublime_text/sublime_text -n

修改为：

Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so exec /opt/sublime_text/sublime_text -n"

将[Desktop Action Document]中的字符串

Exec=/opt/sublime_text/sublime_text --command new_file

修改为

Exec=bash -c "LD_PRELOAD=/opt/sublime_text/libsublime-imfix.so exec /opt/sublime_text/sublime_text --command new_file"

文中代码来自：Cjacker Huang <jianzhong.huang at i-soft.com.cn>