[Tuxpaint-devel] SDL_im and tuxpaint-0.9.15b for Windows.

[Shocky H. <sho...@ya...>]

Hi,

I and my daughter want to input Korean characters in tuxpaint-0.9.15b for
Windows.

I finally found the SDL_im project which aims to be an Input Method support
in SDL project.
<http://sdl-im.csie.net/>

I can patch the <http://sdl-im.csie.net/download/SDL_im-1.2.8-20050828.diff.
gz> files into the current SDL-1.2.9 branch without difficulties.
The major modifications for tuxpaint.c is follows - you will notice you
should define the ENABLE_IM_EVENT first.

@@ -2777,6 +2793,10 @@
   Uint32 last_cursor_blink, cur_cursor_blink,
     pre_event_time, current_event_time;
 
+#ifdef ENABLE_IM_EVENT
+  wchar_t wbuf[256];
+  int buf_len = 0;
+#endif
@@ -2838,7 +2858,14 @@
 	    {
 	      key = event.key.keysym.sym;
 	      mod = event.key.keysym.mod;
-	      
+
+#ifdef ENABLE_IM_EVENT
+		  SDL_SetIMPosition(cursor_x - 2, cursor_y - 2 +
TTF_FontHeight(getfonthandle(cur_font)));
+		  if (buf_len = SDL_FlushIMString(wbuf))
+			  SDL_FlushIMString(wbuf);
+		  wbuf[buf_len] = 0;
+#endif
+
 	      handle_keymouse(key, SDL_KEYDOWN);
 
 	      if (key == SDLK_ESCAPE && !disable_quit)
@@ -2991,6 +3018,10 @@
 		  if (cur_tool == TOOL_TEXT &&
 		      cursor_x != -1 && cursor_y != -1)
 		    {
+#ifdef ENABLE_IM_EVENT
+				if (buf_len > 0)
+					event.key.keysym.unicode = wbuf[0];
+#endif
 		      key_down = key;
 		      key_unicode = event.key.keysym.unicode;
 
@@ -3004,8 +3035,13 @@
 
 			  if (texttool_len > 0)
 			    {
+#ifdef ENABLE_IM_EVENT
+				  texttool_len =
utf8_remove_last_char(texttool_str, texttool_len);
+			      texttool_str[texttool_len] = '\0';
+#else
 			      texttool_len--;
 			      texttool_str[texttool_len] = '\0';
+#endif
 			      playsound(0, SND_KEYCLICK, 0);
 	        
 			      do_render_cur_text(0);
@@ -3040,8 +3076,12 @@
 			      cursor_textwidth = 0;
 			    }
 		        }
+#ifdef ENABLE_IM_EVENT
+		      else //if (isprint(key_unicode))
+#else
 		      else if (isprint(key_unicode))
-			{
+#endif
+			  {
 			  if (texttool_len < sizeof(texttool_str) -
MAX_UTF8_CHAR_LENGTH)
 			    {
 			      int old_cursor_textwidth = cursor_textwidth;
@@ -3050,9 +3090,18 @@
 				     "unicode = %c (%d)\n\n",
 				     key_down, key_unicode, key_unicode);
 #endif
-	  	     
+
+#ifdef ENABLE_IM_EVENT
+				  if (buf_len > 0) {
+					  texttool_len +=
unicode_to_utf8(&texttool_str[texttool_len], key_unicode);
+				  } else if (key_unicode != 0) {
 			        texttool_str[texttool_len++] = key_unicode;
-		
+				  }
+#else
+				  if (key_unicode != 0) {
+			        texttool_str[texttool_len++] = key_unicode;
+				  }
+#endif
 			      texttool_str[texttool_len] = '\0';
 			      do_render_cur_text(0);

Of course, there are unicode_to_utf8() and utf8_remove_last_char() function
implementations.
And I must fix several tuxpaint-0.9.15b source files to build with
Microsoft Visual Studio .Net 2003.

You can get results in following URL's:
1. screenshot <http://kldp.org/files/tuxpaint+SDL_im.PNG>
2. diff source <http://kldp.org/files/tuxpaint-0.9.15b+SDL_im-1.2.9-
20060329.diff.txt>
3. Windows XP binary files <http://kldp.org/files/tuxpaint-0.9.15b+SDL_im-1.
2.9-20060329.zip>

I hope this could help people who want to use the Windows IME with tuxpaint-
0.9.15b for Windows.

Best regards.

PS: I use the Korean font downloaded from the tuxpaint website.


		
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