From e9e9684117719204929821028ba9dbb7915ea119 Mon Sep 17 00:00:00 2001
From: kraxel <kraxel>
Date: Sun, 28 Mar 2004 11:31:57 +0000
Subject: Initial revision

---
 fb-gui.c | 189 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 189 insertions(+)
 create mode 100644 fb-gui.c

(limited to 'fb-gui.c')

diff --git a/fb-gui.c b/fb-gui.c
new file mode 100644
index 0000000..3c6328c
--- /dev/null
+++ b/fb-gui.c
@@ -0,0 +1,189 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <linux/fb.h>
+
+#include "fbtools.h"
+#include "fs.h"
+#include "fb-gui.h"
+
+/* public */
+int visible = 1;
+
+/* private */
+static struct fs_font *f;
+static char *x11_font = "10x20";
+
+static int ys =  3;
+static int xs = 10;
+
+/* ---------------------------------------------------------------------- */
+/* clear screen (areas)                                                   */
+
+void fb_clear_mem(void)
+{
+    if (visible)
+	fb_memset(fb_mem,0,fb_fix.smem_len);
+}
+
+void fb_clear_screen(void)
+{
+    if (visible)
+	fb_memset(fb_mem,0,fb_fix.line_length * fb_var.yres);
+}
+
+static void fb_clear_rect(int x1, int x2, int y1,int y2)
+{
+    unsigned char *ptr;
+    int y,h;
+
+    if (!visible)
+	return;
+
+    if (x2 < x1)
+	h = x2, x2 = x1, x1 = h;
+    if (y2 < y1)
+	h = y2, y2 = y1, y1 = h;
+    ptr  = fb_mem;
+    ptr += y1 * fb_fix.line_length;
+    ptr += x1 * fs_bpp;
+
+    for (y = y1; y <= y2; y++) {
+	fb_memset(ptr, 0, (x2 - x1 + 1) * fs_bpp);
+	ptr += fb_fix.line_length;
+    }
+}
+
+/* ---------------------------------------------------------------------- */
+/* draw lines                                                             */
+
+static void fb_setpixel(int x, int y, unsigned int color)
+{
+    unsigned char *ptr;
+
+    ptr  = fb_mem;
+    ptr += y * fb_fix.line_length;
+    ptr += x * fs_bpp;
+    fs_setpixel(ptr, color);
+}
+
+static void fb_line(int x1, int x2, int y1,int y2)
+{
+    int x,y,h;
+    float inc;
+
+    if (x2 < x1)
+	h = x2, x2 = x1, x1 = h;
+    if (y2 < y1)
+	h = y2, y2 = y1, y1 = h;
+
+    if (x2 - x1 < y2 - y1) {
+	inc = (float)(x2-x1)/(float)(y2-y1);
+	for (y = y1; y <= y2; y++) {
+	    x = x1 + inc * (y - y1);
+	    fb_setpixel(x,y,fs_white);
+	}
+    } else {
+	inc = (float)(y2-y1)/(float)(x2-x1);
+	for (x = x1; x <= x2; x++) {
+	    y = y1 + inc * (x - x1);
+	    fb_setpixel(x,y,fs_white);
+	}
+    }
+}
+
+static void fb_rect(int x1, int x2, int y1,int y2)
+{
+    fb_line(x1, x2, y1, y1);
+    fb_line(x1, x2, y2, y2);
+    fb_line(x1, x1, y1, y2);
+    fb_line(x2, x2, y1, y2);
+}
+
+/* ---------------------------------------------------------------------- */
+/* text stuff                                                             */
+
+void fb_text_init1(char *font)
+{
+    char   *fonts[2] = { font, NULL };
+
+    if (NULL == f)
+	f = fs_consolefont(font ? fonts : NULL);
+#ifndef X_DISPLAY_MISSING
+    if (NULL == f && 0 == fs_connect(NULL))
+	f = fs_open(font ? font : x11_font);
+#endif
+    if (NULL == f) {
+	fprintf(stderr,"no font available\n");
+	exit(1);
+    }
+}
+
+void fb_text_init2(void)
+{
+    fs_init_fb(255);
+}
+
+int  fb_font_width(void)
+{
+    return f->width;
+}
+
+void fb_status_line(unsigned char *msg)
+{
+    int y;
+    
+    if (!visible)
+	return;
+    y = fb_var.yres - f->height - ys;
+    fb_memset(fb_mem + fb_fix.line_length * y, 0,
+	      fb_fix.line_length * (f->height+ys));
+    fb_line(0, fb_var.xres, y, y);
+    fs_puts(f, 0, y+ys, msg);
+}
+
+void fb_edit_line(unsigned char *str, int pos)
+{
+    int x,y;
+    
+    if (!visible)
+	return;
+    y = fb_var.yres - f->height - ys;
+    x = pos * f->width;
+    fb_memset(fb_mem + fb_fix.line_length * y, 0,
+	      fb_fix.line_length * (f->height+ys));
+    fb_line(0, fb_var.xres, y, y);
+    fs_puts(f, 0, y+ys, str);
+    fb_line(x, x + f->width, fb_var.yres-1, fb_var.yres-1);
+    fb_line(x, x + f->width, fb_var.yres-2, fb_var.yres-2);
+}
+
+void fb_text_box(int x, int y, char *lines[], unsigned int count)
+{
+    unsigned int i,len,max, x1, x2, y1, y2;
+
+    if (!visible)
+	return;
+
+    max = 0;
+    for (i = 0; i < count; i++) {
+	len = strlen(lines[i]);
+	if (max < len)
+	    max = len;
+    }
+    x1 = x;
+    x2 = x + max * f->width;
+    y1 = y;
+    y2 = y + count * f->height;
+
+    x += xs; x2 += 2*xs;
+    y += ys; y2 += 2*ys;
+    
+    fb_clear_rect(x1, x2, y1, y2);
+    fb_rect(x1, x2, y1, y2);
+    for (i = 0; i < count; i++) {
+	fs_puts(f,x,y,lines[i]);
+	y += f->height;
+    }
+}
+
-- 
cgit