merge w3m-img for framebuffer support

* w3mimg/w3mimg.h: created
* w3mimg/x11/x11_w3mimg.c: created
* w3mimg/fb/fb_w3mimg.c: created
* w3mimgsize.c w3mimgdisplay.c: modified
* configure: modified
* XMakefile: modified
* config.h.dist: updated
From: Fumitoshi UKAI  <ukai@debian.or.jp>

w3m-img for framebuffer support
* http://homepage3.nifty.com/slokar/fb/
* w3mimg/fb/fb.c w3mimg/fb/fb.h
  w3mimg/fb/fb_img.c w3mimg/fb/fb_img.h
  w3mimg/fb/fb_gdkpixbuf.c w3mimg/fb/fb_gdkpixbuf.h
  w3mimg/fb/fb_imlib2.c w3mimg/fb/fb_imlib.h
  w3mimg/fb/readme.txt w3mimg/fb/license.txt: added
From: Hiroshi Kawashima <kei@sm.sony.co.jp>

w3mimg/fb/fb_w3mimg.c

@@ -0,0 +1,133 @@
+/* $Id: fb_w3mimg.c,v 1.1 2002/07/17 20:58:48 ukai Exp $ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "w3mimg/fb/fb.h"
+#include "w3mimg/fb/fb_img.h"
+#include "w3mimg/w3mimg.h"
+
+static int
+w3mfb_init(w3mimg_op *self)
+{
+    if (self == NULL)
+	return 0;
+    return 1;
+}
+
+static int
+w3mfb_finish(w3mimg_op *self)
+{
+    if (self == NULL)
+	return 0;
+    return 1;
+}
+
+static int
+w3mfb_active(w3mimg_op *self)
+{
+    if (self == NULL)
+	return 0;
+    return 1;
+}
+
+static void
+w3mfb_set_background(w3mimg_op *self, char *background)
+{
+    if (self == NULL)
+	return;
+    if (background) {
+	int r, g, b;
+	if (sscanf(background, "#%02x%02x%02x", &r, &g, &b) == 3)
+	    fb_set_bg(r, g, b);
+    }
+}
+
+static void
+w3mfb_sync(w3mimg_op *self)
+{
+    return;
+}
+
+static void
+w3mfb_close(w3mimg_op *self)
+{
+    fb_close();
+}
+
+static int
+w3mfb_load_image(w3mimg_op *self, W3MImage *img, char *fname, int w, int h)
+{
+    IMAGE *im;
+
+    if (self == NULL)
+	return 0;
+    im = fb_load_image(fname, w, h);
+    if (!im)
+	return 0;
+    img->pixmap = im;
+    img->width = im->width;
+    img->height = im->height;
+    return 1;
+}
+
+static int
+w3mfb_show_image(w3mimg_op *self, W3MImage *img, int sx, int sy, 
+		 int sw, int sh,
+		 int x, int y)
+{
+    if (self == NULL)
+	return 0;
+
+    fb_draw_image((IMAGE *)img->pixmap,
+		  x + self->offset_x, y + self->offset_y,
+		  sx, sy,
+		  (sw ? sw : img->width),
+		  (sh ? sh : img->height));
+    return 1;
+}
+
+static void
+w3mfb_free_image(w3mimg_op *self, W3MImage *img)
+{
+    if (self == NULL)
+	return;
+    if (img && img->pixmap) {
+	fb_free_image((IMAGE *)img->pixmap);
+	img->pixmap = NULL;
+	img->width = 0;
+	img->height = 0;
+    }
+}
+
+w3mimg_op *
+w3mimg_fbopen()
+{
+    w3mimg_op *wop = NULL;
+    wop = (w3mimg_op *)malloc(sizeof(w3mimg_op));
+    if (wop == NULL)
+	return NULL;
+    memset(wop, 0, sizeof(w3mimg_op));
+
+    if (fb_open())
+	goto error;
+
+    wop->width = fb_width();
+    wop->height = fb_height();
+    
+    wop->init = w3mfb_init;
+    wop->finish = w3mfb_finish;
+    wop->active = w3mfb_active;
+    wop->set_background = w3mfb_set_background;
+    wop->sync = w3mfb_sync;
+    wop->close = w3mfb_close;
+
+    wop->load_image = w3mfb_load_image;
+    wop->show_image = w3mfb_show_image;
+    wop->free_image = w3mfb_free_image;
+
+    return wop;
+error:
+    free(wop);
+    return NULL;
+}