sixel and osc5379 image display protocols can be chosen in options

fm.h

@@ -312,6 +312,10 @@ extern int REV_LB[];
 #define EOL(l) (&(l)->ptr[(l)->length])
 #define IS_EOL(p,l) ((p)==&(l)->ptr[(l)->length])
 
+#define INLINE_IMG_NONE		0
+#define INLINE_IMG_OSC5379	1
+#define INLINE_IMG_SIXEL	2
+
 /* 
  * Types.
  */

image.c

@@ -224,31 +224,34 @@ drawImage()
 		i->sx, i->sy, i->width, i->height,
 		pixel_per_char_i, pixel_per_line_i);
 	#endif
-	    (enable_inline_image == 2 ? put_image_sixel : put_image_osc5379)(
-		((enable_inline_image == 2 /* sixel */ || getenv("WINDOWID")) &&
+	    char *url = ((enable_inline_image == INLINE_IMG_SIXEL || getenv("WINDOWID")) &&
 		 /* XXX I don't know why but sometimes i->cache->file doesn't exist. */
 		 i->cache->touch && stat(i->cache->file,&st) == 0) ?
-			/* local */ i->cache->file : /* remote */ i->cache->url,
-		i->x / pixel_per_char_i,
-		i->y / pixel_per_line_i,
-	    #if 1
-		i->cache->a_width > 0 ?
-			(i->cache->width + i->x % pixel_per_char_i + pixel_per_char_i - 1) /
-				pixel_per_char_i :
-	    #endif
-			0,
+		 /* local */ i->cache->file : /* remote */ i->cache->url;
 
-	    #if 1
-		i->cache->a_height > 0 ?
-			(i->cache->height + i->y % pixel_per_line_i + pixel_per_line_i - 1) /
-				pixel_per_line_i :
-	    #endif
-			0,
-		i->sx / pixel_per_char_i,
-		i->sy / pixel_per_line_i,
-		(i->width + i->sx % pixel_per_char_i + pixel_per_char_i - 1) / pixel_per_char_i,
-		(i->height + i->sy % pixel_per_line_i + pixel_per_line_i - 1) / pixel_per_line_i,
-		n_terminal_image);
+	    int x = i->x / pixel_per_char_i;
+	    int y = i->y / pixel_per_line_i;
+
+	    int w = i->cache->a_width > 0 ? (
+		    (i->cache->width + i->x % pixel_per_char_i + pixel_per_char_i - 1) /
+		    pixel_per_char_i) : 0;
+	    int h = i->cache->a_height > 0 ? (
+		    (i->cache->height + i->y % pixel_per_line_i + pixel_per_line_i - 1) /
+		    pixel_per_line_i) : 0;
+
+	    int sx = i->sx / pixel_per_char_i;
+	    int sy = i->sy / pixel_per_line_i;
+
+	    int sw = (i->width + i->sx % pixel_per_char_i + pixel_per_char_i - 1) /
+		      pixel_per_char_i;
+	    int sh = (i->height + i->sy % pixel_per_line_i + pixel_per_line_i - 1) /
+		      pixel_per_line_i;
+
+	    if (enable_inline_image == INLINE_IMG_SIXEL) {
+		put_image_sixel(url, x, y, w, h, sx, sy, sw, sh, n_terminal_image);
+	    } else {
+		put_image_osc5379(url, x, y, w, h, sx, sy, sw, sh, n_terminal_image);
+	    }
 
 	    continue ;
 	}
@@ -599,7 +602,7 @@ getImage(Image * image, ParsedURL *current, int flag)
 	cache->pid = 0;
 	cache->index = 0;
 	cache->loaded = IMG_FLAG_UNLOADED;
-	if (enable_inline_image == 1) {
+	if (enable_inline_image == INLINE_IMG_OSC5379) {
 	    if (image->width > 0 && image->width % pixel_per_char_i > 0)
 		image->width += (pixel_per_char_i - image->width % pixel_per_char_i);
 

main.c

@@ -123,7 +123,7 @@ static int searchKeyNum(void);
 #define help() fusage(stdout, 0)
 #define usage() fusage(stderr, 1)
 
-int enable_inline_image;	/* 1 == mlterm OSC 5379, 2 == sixel */
+int enable_inline_image;
 
 static void
 fversion(FILE * f)
@@ -692,10 +692,10 @@ main(int argc, char **argv, char **envp)
 	    }
 #endif
 	    else if (!strcmp("-ri", argv[i])) {
-	        enable_inline_image = 1;
+	        enable_inline_image = INLINE_IMG_OSC5379;
 	    }
 	    else if (!strcmp("-sixel", argv[i])) {
-		enable_inline_image = 2;
+		enable_inline_image = INLINE_IMG_SIXEL;
 	    }
 	    else if (!strcmp("-num", argv[i]))
 		showLineNum = TRUE;
@@ -5961,7 +5961,7 @@ deleteFiles()
     }
     while ((f = popText(fileToDelete)) != NULL) {
 	unlink(f);
-	if (enable_inline_image == 2 && strcmp(f+strlen(f)-4, ".gif") == 0) {
+	if (enable_inline_image == INLINE_IMG_SIXEL && strcmp(f+strlen(f)-4, ".gif") == 0) {
 	    Str firstframe = Strnew_charp(f);
 	    Strcat_charp(firstframe, "-1");
 	    unlink(firstframe->ptr);

rc.c

@@ -86,6 +86,7 @@ static int OptionEncode = FALSE;
 #define CMT_IMAGE_SCALE  N_("Scale of image (%)")
 #define CMT_IMGDISPLAY   N_("External command to display image")
 #define CMT_IMAGE_MAP_LIST N_("Use link list of image map")
+#define CMT_INLINE_IMG_PROTOCOL N_("Inline image protocol")
 #endif
 #define CMT_MULTICOL     N_("Display file names in multi-column format")
 #define CMT_ALT_ENTITY   N_("Use ASCII equivalents to display entities")
@@ -363,6 +364,15 @@ static struct sel_c graphic_char_str[] = {
     {0, NULL, NULL}
 };
 
+#ifdef USE_IMAGE
+static struct sel_c inlineimgstr[] = {
+    {N_S(INLINE_IMG_NONE), N_("none")},
+    {N_S(INLINE_IMG_OSC5379), N_("mlterm osc 5379")},
+    {N_S(INLINE_IMG_SIXEL), N_("sixel")},
+    {0, NULL, NULL}
+};
+#endif				/* USE_IMAGE */
+
 struct param_ptr params1[] = {
     {"tabstop", P_NZINT, PI_TEXT, (void *)&Tabstop, CMT_TABSTOP, NULL},
     {"indent_incr", P_NZINT, PI_TEXT, (void *)&IndentIncr, CMT_INDENT_INCR,
@@ -428,6 +438,8 @@ struct param_ptr params1[] = {
      NULL},
     {"image_map_list", P_INT, PI_ONOFF, (void *)&image_map_list,
      CMT_IMAGE_MAP_LIST, NULL},
+    {"inline_img_protocol", P_INT, PI_SEL_C, (void *)&enable_inline_image,
+     CMT_INLINE_IMG_PROTOCOL, (void *)inlineimgstr},
 #endif
     {"fold_line", P_INT, PI_ONOFF, (void *)&FoldLine, CMT_FOLD_LINE, NULL},
     {"show_lnum", P_INT, PI_ONOFF, (void *)&showLineNum, CMT_SHOW_NUM, NULL},
@@ -1223,7 +1235,7 @@ sync_with_option(void)
     init_migemo();
 #endif
 #ifdef USE_IMAGE
-    if (fmInitialized && displayImage)
+    if (fmInitialized && (displayImage || enable_inline_image))
 	initImage();
 #else
     displayImage = FALSE;	/* XXX */