diff options
Diffstat (limited to 'sublime_text_3_imfix.c')
| -rw-r--r-- | sublime_text_3_imfix.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/sublime_text_3_imfix.c b/sublime_text_3_imfix.c new file mode 100644 index 000000000000..9a90f1f3d755 --- /dev/null +++ b/sublime_text_3_imfix.c @@ -0,0 +1,263 @@ +/* +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> +By whitequark@whitequark.org + +How to compile: +gcc -shared -o libsublime-imfix.so sublime_imfix.c `pkg-config --libs --cflags gtk+-2.0` -fPIC +How to use: +LD_PRELOAD=./libsublime-imfix.so sublime_text + +Changes: +2014 06-09 +1, Fix cursor position update for sublime text 3. +2, Combine the codes from whitequark(fix for xim immodule) and add cursor update support for XIM immodule. +*/ + +/*for RTLD_NEXT*/ +#define _GNU_SOURCE + +#include <gtk/gtk.h> +#include <gdk/gdkx.h> +#include <assert.h> +#include <dlfcn.h> +#include <stdio.h> +#include <string.h> +#include <gtk/gtk.h> +#include <X11/Xlib.h> +#include <X11/Xutil.h> + +#ifdef VERBOSE +#define DEBUG(fmt, ...) do { \ + FILE* err = fopen("/tmp/libsublime-immethod-fix.log", "a"); \ + if (err) { \ + fprintf(err, fmt, __VA_ARGS__); \ + fclose(err); \ + } \ + } while(0) +#else +#define DEBUG(fmt, ...) +#endif + + +typedef GdkSegment GdkRegionBox; + +struct _GdkRegion +{ + long size; + long numRects; + GdkRegionBox *rects; + GdkRegionBox extents; +}; + +GtkIMContext *local_context; + + +//this func is interposed to support cursor position update. +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 in sublime text 2 + //And is 1 in sublime text 3. + //Maybe sometimes we will make a mistake, but for most of the time, it should be the caret. + if((rectangle->width == 2 || rectangle->width == 1) && 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); + + //below is our interposed codes to save the context to local_context. + 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; + } + //only add this event_filter when using 'fcitx' immodule. + //for xim immodule, this function is as same as original from gtk2. + const gchar * immodule = g_getenv("GTK_IM_MODULE"); + if(immodule && !strcmp(immodule, "fcitx")) { + gdk_window_add_filter (window, event_filter, context); + } +} + + +/*below codes is from whitequark, fix for xim immodule*/ + +/* See gtkimcontextxim.c */ +GType gtk_type_im_context_xim = 0; + +#define GTK_TYPE_IM_CONTEXT_XIM (gtk_type_im_context_xim) +#define GTK_IM_CONTEXT_XIM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_IM_CONTEXT_XIM, GtkIMContextXIM)) +#define GTK_IM_CONTEXT_XIM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_IM_CONTEXT_XIM, GtkIMContextXIMClass)) +#define GTK_IS_IM_CONTEXT_XIM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_IM_CONTEXT_XIM)) +#define GTK_IS_IM_CONTEXT_XIM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IM_CONTEXT_XIM)) +#define GTK_IM_CONTEXT_XIM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IM_CONTEXT_XIM, GtkIMContextXIMClass)) + +typedef struct _GtkIMContextXIM GtkIMContextXIM; +typedef struct _GtkIMContextXIMClass GtkIMContextXIMClass; + +struct _GtkIMContextXIMClass +{ + GtkIMContextClass parent_class; +}; + +typedef struct _StatusWindow StatusWindow; +typedef struct _GtkXIMInfo GtkXIMInfo; + +struct _GtkIMContextXIM +{ + GtkIMContext object; + + GtkXIMInfo *im_info; + + gchar *locale; + gchar *mb_charset; + + GdkWindow *client_window; + GtkWidget *client_widget; + + /* The status window for this input context; we claim the +* * status window when we are focused and have created an XIC +* */ + StatusWindow *status_window; + + gint preedit_size; + gint preedit_length; + gunichar *preedit_chars; + XIMFeedback *feedbacks; + + gint preedit_cursor; + + XIMCallback preedit_start_callback; + XIMCallback preedit_done_callback; + XIMCallback preedit_draw_callback; + XIMCallback preedit_caret_callback; + + XIMCallback status_start_callback; + XIMCallback status_done_callback; + XIMCallback status_draw_callback; + + XIMCallback string_conversion_callback; + + XIC ic; + + guint filter_key_release : 1; + guint use_preedit : 1; + guint finalizing : 1; + guint in_toplevel : 1; + guint has_focus : 1; +}; + +static GClassInitFunc orig_gtk_im_context_xim_class_init; +static GType (*orig_g_type_module_register_type)(GTypeModule *, + GType, const gchar *, + const GTypeInfo *, GTypeFlags); +static gboolean (*orig_gtk_im_context_xim_filter_keypress)(GtkIMContext *context, + GdkEventKey *event); + +static gboolean +hook_gtk_im_context_xim_filter_keypress(GtkIMContext *context, GdkEventKey *event) { + GtkIMContextXIM *im_context_xim = GTK_IM_CONTEXT_XIM(context); + if (!im_context_xim->client_window) { + DEBUG("im_context_xim == %p\n", im_context_xim); + DEBUG("event->window == %p\n", event->window); + + gtk_im_context_set_client_window(context, event->window); + } + + return orig_gtk_im_context_xim_filter_keypress(context, event); +} + +static void +hook_gtk_im_context_xim_class_init (GtkIMContextXIMClass *class) { + orig_gtk_im_context_xim_class_init(class, NULL); /* wat? */ + + GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (class); + + assert(!orig_gtk_im_context_xim_filter_keypress); + orig_gtk_im_context_xim_filter_keypress = im_context_class->filter_keypress; + im_context_class->filter_keypress = hook_gtk_im_context_xim_filter_keypress; + DEBUG("orig_gtk_im_context_xim_filter_keypress: %p\n", + orig_gtk_im_context_xim_filter_keypress); +} + +GType +g_type_module_register_type (GTypeModule *module, + GType parent_type, + const gchar *type_name, + const GTypeInfo *type_info, + GTypeFlags flags) { + if (!orig_g_type_module_register_type) { + orig_g_type_module_register_type = dlsym(RTLD_NEXT, "g_type_module_register_type"); + assert(orig_g_type_module_register_type); + } + + if (type_name && !strcmp(type_name, "GtkIMContextXIM")) { + assert(!orig_gtk_im_context_xim_class_init); + orig_gtk_im_context_xim_class_init = type_info->class_init; + + assert(sizeof(GtkIMContextXIM) == type_info->instance_size); + + const GTypeInfo hook_im_context_xim_info = + { + type_info->class_size, + type_info->base_init, + type_info->base_finalize, + (GClassInitFunc) hook_gtk_im_context_xim_class_init, + type_info->class_finalize, + type_info->class_data, + type_info->instance_size, + type_info->n_preallocs, + type_info->instance_init, + }; + + DEBUG("orig_gtk_im_context_xim_class_init: %p\n", orig_gtk_im_context_xim_class_init); + + gtk_type_im_context_xim = + orig_g_type_module_register_type(module, parent_type, type_name, + &hook_im_context_xim_info, flags); + + return gtk_type_im_context_xim; + } + + return orig_g_type_module_register_type(module, parent_type, type_name, type_info, flags); +} |