101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "../config.h"
|
|
#endif // HAVE_CONFIG_H
|
|
|
|
#include "truerendercontrol.hh"
|
|
#include "display.hh"
|
|
#include "screeninfo.hh"
|
|
|
|
extern "C" {
|
|
#ifdef HAVE_STDLIB_H
|
|
# include <stdlib.h>
|
|
#endif // HAVE_STDLIB_H
|
|
|
|
#include "gettext.h"
|
|
#define _(str) gettext(str)
|
|
}
|
|
|
|
namespace otk {
|
|
|
|
TrueRenderControl::TrueRenderControl(const ScreenInfo *screen)
|
|
: RenderControl(screen)
|
|
{
|
|
printf("Initializing TrueColor RenderControl\n");
|
|
|
|
unsigned long red_mask, green_mask, blue_mask;
|
|
|
|
// find the offsets for each color in the visual's masks
|
|
red_mask = screen->visual()->red_mask;
|
|
green_mask = screen->visual()->green_mask;
|
|
blue_mask = screen->visual()->blue_mask;
|
|
|
|
while (! (red_mask & 1)) { _red_offset++; red_mask >>= 1; }
|
|
while (! (green_mask & 1)) { _green_offset++; green_mask >>= 1; }
|
|
while (! (blue_mask & 1)) { _blue_offset++; blue_mask >>= 1; }
|
|
|
|
// use the mask to determine the number of bits for each shade of color
|
|
// so, best case, red_mask == 0xff (255), with each bit as a different
|
|
// shade!
|
|
_red_bits = 255 / red_mask;
|
|
_green_bits = 255 / green_mask;
|
|
_blue_bits = 255 / blue_mask;
|
|
|
|
// compute color tables, based on the number of bits for each shade
|
|
for (int i = 0; i < 256; i++) {
|
|
_red_color_table[i] = i / _red_bits;
|
|
_green_color_table[i] = i / _green_bits;
|
|
_blue_color_table[i] = i / _blue_bits;
|
|
}
|
|
}
|
|
|
|
TrueRenderControl::~TrueRenderControl()
|
|
{
|
|
printf("Destroying TrueColor RenderControl\n");
|
|
|
|
|
|
}
|
|
|
|
void TrueRenderControl::render(::Drawable d)
|
|
{
|
|
XGCValues gcv;
|
|
gcv.cap_style = CapProjecting;
|
|
|
|
int w = 255, h = 32;
|
|
Pixmap p = XCreatePixmap(**display, d, w, h, _screen->depth());
|
|
XImage *im = XCreateImage(**display, _screen->visual(), _screen->depth(),
|
|
ZPixmap, 0, NULL, w, h, 32, 0);
|
|
//GC gc = XCreateGC(**display, _screen->rootWindow(), GCCapStyle, &gcv);
|
|
|
|
im->data = new char[im->bytes_per_line * (h + 1)]; // XXX + 1?
|
|
char *dp = im->data;
|
|
|
|
for (int x = 0; x < w; ++x, ++dp)
|
|
*dp = 0;
|
|
for (int y = 0; y < 10; ++h)
|
|
for (int x = 0; x < w; ++x, ++dp)
|
|
*dp = _red_color_table[x] << _red_offset;
|
|
for (int y = 0; y < 10; ++h)
|
|
for (int x = 0; x < w; ++x, ++dp)
|
|
*dp = _green_color_table[x] << _green_offset;
|
|
for (int y = 0; y < 10; ++h)
|
|
for (int x = 0; x < w; ++x, ++dp)
|
|
*dp = _blue_color_table[x] << _blue_offset;
|
|
for (int x = 0; x < w; ++x, ++dp)
|
|
*dp = 0;
|
|
|
|
XPutImage(**display, p, DefaultGC(**display, _screen->screen()),
|
|
im, 0, 0, 0, 0, w, h);
|
|
|
|
//delete [] image->data;
|
|
//image->data = NULL;
|
|
XDestroyImage(im);
|
|
|
|
XCopyArea(**display, p, d, DefaultGC(**display, _screen->screen()),
|
|
0, 0, w, h, 0, 0);
|
|
|
|
XFreePixmap(**display, p);
|
|
}
|
|
|
|
}
|