/* xscreensaver, Copyright (c) 2001-2018 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
/* This file contains code for drawing NTSC colorbars.
A couple of things use this.
*/
#include "utils.h"
#include "resources.h"
#include "colorbars.h"
#include "../hacks/ximage-loader.h"
static const char * const colors[7][18] = {
{ "#CCCCCC", "#FFFF00", "#00FFFF", "#00FF00", /* tall bars */
"#FF00FF", "#FF0000", "#0000FF", "#000000",
0
}, {
"#000000", "#0000FF", "#FF0000", "#FF00FF", /* short rev bars */
"#00FF00", "#00FFFF", "#FFFF00", "#CCCCCC",
0
}, {
"#000000", 0 /* blank */
}, {
"#FFFFFF", "#EEEEEE", "#DDDDDD", "#CCCCCC", /* gray ramp */
"#BBBBBB", "#AAAAAA", "#999999", "#888888",
"#777777", "#666666", "#555555", "#444444",
"#333333", "#222222", "#111111", "#000000"
}, {
"#000000", "#111111", "#222222", "#333333", /* gray rev ramp */
"#444444", "#555555", "#666666", "#777777",
"#888888", "#999999", "#AAAAAA", "#BBBBBB",
"#CCCCCC", "#DDDDDD", "#EEEEEE", "#FFFFFF"
}, {
"#000000", 0 /* blank */
}, {
"#FF00FF", "#FF00FF", "#FF00FF", /* blacklevel row */
"#FFFFFF", "#FFFFFF", "#FFFFFF",
"#0000AD", "#0000AD", "#0000AD",
"#131313", "#131313", "#131313",
"#000000", "#000000", "#262626",
"#000000", "#000000", "#000000"
}
};
static const int heights[7] = { 63, 10, 1, 5, 5, 1, 15 }; /* percentages */
void
draw_colorbars (Screen *screen, Visual *visual,
Drawable drawable, Colormap cmap,
int x, int y, int width, int height,
Pixmap logo, Pixmap logo_mask)
{
Display *dpy = DisplayOfScreen (screen);
int ypct = 0;
int j;
XGCValues gcv;
GC gc = XCreateGC (dpy, drawable, 0, &gcv);
if (width <= 0 || height <= 0)
{
Window root;
int xx, yy;
unsigned int bw, d;
XGetGeometry (dpy, drawable,
&root, &xx, &yy,
(unsigned int *) &width,
(unsigned int *) &height,
&bw, &d);
}
for (j = 0; j < sizeof(colors) / sizeof(*colors); j++)
{
int i, h, ncols;
int x1 = 0;
int y2;
for (ncols = 0; ncols < sizeof(*colors) / sizeof(**colors); ncols++)
if (!colors[j][ncols]) break;
ypct += heights[j];
y2 = height * ypct / 100;
h = y2 - y; /* avoid roundoff fencepost */
for (i = 0; i < ncols; i++)
{
XColor xcolor;
const char *color = colors[j][i];
int x2 = x + (width * (i+1) / ncols);
int w = x2 - x1; /* avoid roundoff fencepost */
if (! XParseColor (dpy, cmap, color, &xcolor))
abort();
xcolor.flags = DoRed|DoGreen|DoBlue;
if (!XAllocColor (dpy, cmap, &xcolor))
continue;
XSetForeground (dpy, gc, xcolor.pixel);
XFillRectangle (dpy, drawable, gc, x1, y, w, h);
x1 = x2;
}
y = y2;
}
/* Add in the xscreensaver logo */
if (logo)
{
Window r;
int x, y;
unsigned int logo_width, logo_height, bw, d;
int x1, y1, w, h;
XGetGeometry (dpy, logo, &r, &x, &y, &logo_width, &logo_height, &bw, &d);
w = width;
h = height * heights[0] / 100;
x1 = x + (w - (int) logo_width) / 2;
y1 = y + (h - (int) logo_height) / 2;
if (logo_mask)
{
XSetClipMask (dpy, gc, logo_mask);
XSetClipOrigin (dpy, gc, x1, y1);
}
XCopyArea (dpy, logo, drawable, gc, 0, 0,
logo_width, logo_height, x1, y1);
}
XFreeGC(dpy, gc);
}
