[w3m-dev 03929] clear image

* image.c (syncImage): added
	(drawImage): rewrite using syncImage()
	(clearImage): use clear image command (6)
* w3mimgdisplay.c: change protocol
	2 => terminate drawing
	6 => clear image
	(main): '2' calls TermImage()
		'6' calls ClearImage()
		TermImage() when exit
	(TermImage): renamed from ClearImage
	(ClearImage): rewritten to call w_op->clear()
* w3mimg.h/w3mimg.h (w3mimg_op): add clear()
* w3mimg/fb/fb.c (fb_clear): added
* w3mimg/fb/fb.h (fb_clear): added
* w3mimg/fb/fb_img.c (fb_image_clear): added
* w3mimg/fb/fb_w3mimg.c (w3mfb_clear): added
	(w3mimg_fbopen): initialize wop->clear
* w3mimg/x11/x11_w3mimg.c (x11_clear): added
	(w3mimg_x11open): initialize wop->clear
From: Hironori SAKAMOTO <hsaka@mth.biglobe.ne.jp>

4 files changed, 45 insertions, 4 deletions

diff --git a/w3mimg/fb/fb.c b/w3mimg/fb/fb.c
index c936784..954525a 100644
--- a/w3mimg/fb/fb.c
+++ b/w3mimg/fb/fb.c
@@ -1,4 +1,4 @@
-/* $Id: fb.c,v 1.9 2002/10/31 09:36:22 ukai Exp $ */
+/* $Id: fb.c,v 1.10 2003/07/07 15:48:17 ukai Exp $ */
 /**************************************************************************
                 fb.c 0.3 Copyright (C) 2002, hito
  **************************************************************************/
@@ -365,6 +365,30 @@ fb_height(void)
     return vscinfo.yres;
 }
 
+int
+fb_clear(int x, int y, int w, int h, int r, int g, int b)
+{
+    unsigned long bg;
+    int i, offset_fb;
+
+    if (is_open != TRUE || x > fb_width() || y > fb_height())
+	return 1;
+    if (x + w > fb_width())
+	w = fb_width() - x;
+    if (y + h > fb_height())
+	h = fb_height() - y;
+
+    offset_fb = fscinfo.line_length * y + pixel_size * x;
+    bg = ((r >> (CHAR_BIT - vscinfo.red.length)) << vscinfo.red.offset) +
+	 ((g >> (CHAR_BIT - vscinfo.green.length)) << vscinfo.green.offset) +
+	 ((b >> (CHAR_BIT - vscinfo.blue.length)) << vscinfo.blue.offset);
+    for (i = 0; i < h; i++) {
+	memcpy(buf + offset_fb, bg, pixel_size * w);
+	offset_fb += fscinfo.line_length;
+    }
+    return 0;
+}
+
 /********* static functions **************/
 static
     int
diff --git a/w3mimg/fb/fb.h b/w3mimg/fb/fb.h
index bec281d..1138bb0 100644
--- a/w3mimg/fb/fb.h
+++ b/w3mimg/fb/fb.h
@@ -1,4 +1,4 @@
-/* $Id: fb.h,v 1.6 2002/10/10 16:16:03 ukai Exp $ */
+/* $Id: fb.h,v 1.7 2003/07/07 15:48:17 ukai Exp $ */
 #ifndef fb_header
 #define fb_header
 #include <linux/fb.h>
@@ -29,5 +29,6 @@ int fb_open(void);
 void fb_close(void);
 int fb_width(void);
 int fb_height(void);
+int fb_clear(int x, int y, int w, int h, int r, int g, int b);
 
 #endif
diff --git a/w3mimg/fb/fb_img.c b/w3mimg/fb/fb_img.c
index aad3847..3547a00 100644
--- a/w3mimg/fb/fb_img.c
+++ b/w3mimg/fb/fb_img.c
@@ -1,4 +1,4 @@
-/* $Id: fb_img.c,v 1.5 2002/10/10 16:16:04 ukai Exp $ */
+/* $Id: fb_img.c,v 1.6 2003/07/07 15:48:17 ukai Exp $ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/types.h>
@@ -24,3 +24,9 @@ fb_image_set_bg(int r, int g, int b)
     bg_g = g;
     bg_b = b;
 }
+
+int
+fb_image_clear(int x, int y, int w, int h)
+{
+    return fb_clear(x, y, w, h, bg_r, bg_g, bg_b);
+}
diff --git a/w3mimg/fb/fb_w3mimg.c b/w3mimg/fb/fb_w3mimg.c
index 5c8fe4c..94674ed 100644
--- a/w3mimg/fb/fb_w3mimg.c
+++ b/w3mimg/fb/fb_w3mimg.c
@@ -1,4 +1,4 @@
-/* $Id: fb_w3mimg.c,v 1.11 2003/04/03 16:35:48 ukai Exp $ */
+/* $Id: fb_w3mimg.c,v 1.12 2003/07/07 15:48:17 ukai Exp $ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -61,6 +61,15 @@ w3mfb_close(w3mimg_op * self)
 }
 
 static int
+w3mfb_clear(w3mimg_op * self, int x, int y, int w, int h)
+{
+    if (self == NULL)
+	return 0;
+    fb_image_clear(x, y, w, h);
+    return 1;
+}
+
+static int
 w3mfb_load_image(w3mimg_op * self, W3MImage * img, char *fname, int w, int h)
 {
     FB_IMAGE **im;
@@ -179,6 +188,7 @@ w3mimg_fbopen()
     wop->set_background = w3mfb_set_background;
     wop->sync = w3mfb_sync;
     wop->close = w3mfb_close;
+    wop->clear = w3mfb_clear;
 
     wop->load_image = w3mfb_load_image;
     wop->show_image = w3mfb_show_image;