[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>

7 files changed, 101 insertions, 12 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;
diff --git a/w3mimg/w3mimg.h b/w3mimg/w3mimg.h
index 0e7bc26..03158db 100644
--- a/w3mimg/w3mimg.h
+++ b/w3mimg/w3mimg.h
@@ -1,4 +1,4 @@
-/* $Id: w3mimg.h,v 1.6 2003/03/24 15:45:58 ukai Exp $ */
+/* $Id: w3mimg.h,v 1.7 2003/07/07 15:48:17 ukai Exp $ */
 #include "config.h"
 
 #ifdef USE_W3MIMG_FB
@@ -32,6 +32,7 @@ typedef struct _w3mimg_op {
     void (*free_image) (struct _w3mimg_op * self, W3MImage * img);
     int (*get_image_size) (struct _w3mimg_op * self, W3MImage * img,
 			   char *fname, int *w, int *h);
+    int (*clear) (struct _w3mimg_op * self, int x, int y, int w, int h);
 } w3mimg_op;
 
 #ifdef USE_W3MIMG_X11
diff --git a/w3mimg/x11/x11_w3mimg.c b/w3mimg/x11/x11_w3mimg.c
index b2e529f..88be7b1 100644
--- a/w3mimg/x11/x11_w3mimg.c
+++ b/w3mimg/x11/x11_w3mimg.c
@@ -1,4 +1,4 @@
-/* $Id: x11_w3mimg.c,v 1.22 2003/06/13 15:04:00 ukai Exp $ */
+/* $Id: x11_w3mimg.c,v 1.23 2003/07/07 15:48:17 ukai Exp $ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -123,6 +123,19 @@ x11_finish(w3mimg_op * self)
 }
 
 static int
+x11_clear(w3mimg_op * self, int x, int y, int w, int h)
+{
+    struct x11_info *xi;
+    if (self == NULL)
+	return 0;
+    xi = (struct x11_info *)self->priv;
+    if (xi == NULL)
+	return 0;
+    XClearArea(xi->display, xi->window, x, y, w, h, FALSE);
+    return 1;
+}
+
+static int
 x11_active(w3mimg_op * self)
 {
     struct x11_info *xi;
@@ -688,6 +701,7 @@ w3mimg_x11open()
     wop->set_background = x11_set_background;
     wop->sync = x11_sync;
     wop->close = x11_close;
+    wop->clear = x11_clear;
 
     wop->load_image = x11_load_image;
     wop->show_image = x11_show_image;
diff --git a/w3mimgdisplay.c b/w3mimgdisplay.c
index 4534246..6ec24cc 100644
--- a/w3mimgdisplay.c
+++ b/w3mimgdisplay.c
@@ -1,4 +1,4 @@
-/* $Id: w3mimgdisplay.c,v 1.13 2003/03/24 15:45:57 ukai Exp $ */
+/* $Id: w3mimgdisplay.c,v 1.14 2003/07/07 15:48:16 ukai Exp $ */
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -21,7 +21,8 @@ static int maxImage = 0, maxAnim = 100;
 
 static void GetOption(int argc, char **argv);
 static void DrawImage(char *buf, int redraw);
-static void ClearImage(void);
+static void TermImage(void);
+static void ClearImage(char *buf);
 
 int
 main(int argc, char **argv)
@@ -100,15 +101,18 @@ main(int argc, char **argv)
 	 * op	args
 	 *  0;  params		draw image
 	 *  1;  params		redraw image
-	 *  2;  -none-		clear image
+	 *  2;  -none-		terminate drawing
 	 *  3;  -none-		sync drawing
 	 *  4;  -none-		nop, sync communication
 	 *			response '\n'
 	 *  5;  path		get size of image,
 	 *			response "<width> <height>\n"
+	 *  6;  params(6)	clear image
 	 *
 	 * params
 	 *	<n>;<x>;<y>;<w>;<h>;<sx>;<sy>;<sw>;<sh>;<path>
+	 * params(6)
+	 *	<x>;<y>;<w>;<h>
 	 *   
 	 */
 	switch (buf[0]) {
@@ -119,7 +123,7 @@ main(int argc, char **argv)
 	    DrawImage(&buf[2], 1);
 	    break;
 	case '2':
-	    ClearImage();
+	    TermImage();
 	    break;
 	case '3':
 	    w_op->sync(w_op);
@@ -144,9 +148,12 @@ main(int argc, char **argv)
 		fflush(stdout);
 	    }
 	    break;
+	case '6':
+	    ClearImage(&buf[2]);
+	    break;
 	}
     }
-    ClearImage();
+    TermImage();
     w_op->close(w_op);
     exit(0);
 }
@@ -278,7 +285,7 @@ DrawImage(char *buf, int redraw)
 }
 
 void
-ClearImage(void)
+TermImage(void)
 {
     w_op->finish(w_op);
     if (imageBuf) {
@@ -291,3 +298,29 @@ ClearImage(void)
     }
     maxImage = 0;
 }
+
+void
+ClearImage(char *buf)
+{
+    char *p = buf;
+    int x = 0, y = 0, w = 0, h = 0;
+
+    if (!p)
+	return;
+    for (; isdigit(*p); p++)
+	x = 10 * x + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	y = 10 * y + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	w = 10 * w + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	h = 10 * h + (*p - '0');
+
+    w_op->clear(w_op, x, y, w, h);
+}