105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/***********************************************************************/
|
|
/* */
|
|
/* Objective Caml */
|
|
/* */
|
|
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
|
|
/* */
|
|
/* Copyright 1996 Institut National de Recherche en Informatique et */
|
|
/* en Automatique. All rights reserved. This file is distributed */
|
|
/* under the terms of the GNU Library General Public License. */
|
|
/* */
|
|
/***********************************************************************/
|
|
|
|
/* $Id$ */
|
|
|
|
#include "libgraph.h"
|
|
#include "image.h"
|
|
#include <alloc.h>
|
|
#include <custom.h>
|
|
|
|
static void gr_free_image(value im)
|
|
{
|
|
XFreePixmap(grdisplay, Data_im(im));
|
|
if (Mask_im(im) != None) XFreePixmap(grdisplay, Mask_im(im));
|
|
}
|
|
|
|
static struct custom_operations image_ops = {
|
|
"_image",
|
|
gr_free_image,
|
|
custom_compare_default,
|
|
custom_hash_default,
|
|
custom_serialize_default,
|
|
custom_deserialize_default
|
|
};
|
|
|
|
#define Max_image_mem 2000000
|
|
|
|
value gr_new_image(int w, int h)
|
|
{
|
|
value res = alloc_custom(&image_ops, sizeof(struct grimage),
|
|
w * h, Max_image_mem);
|
|
Width_im(res) = w;
|
|
Height_im(res) = h;
|
|
Data_im(res) = XCreatePixmap(grdisplay, grwindow.win, w, h,
|
|
XDefaultDepth(grdisplay, grscreen));
|
|
Mask_im(res) = None;
|
|
return res;
|
|
}
|
|
|
|
value gr_create_image(value vw, value vh)
|
|
{
|
|
gr_check_open();
|
|
return gr_new_image(Int_val(vw), Int_val(vh));
|
|
}
|
|
|
|
value gr_blit_image(value im, value vx, value vy)
|
|
{
|
|
int x = Int_val(vx);
|
|
int y = Int_val(vy);
|
|
gr_check_open();
|
|
XCopyArea(grdisplay, grbstore.win, Data_im(im), grbstore.gc,
|
|
x, Bcvt(y) + 1 - Height_im(im),
|
|
Width_im(im), Height_im(im),
|
|
0, 0);
|
|
return Val_unit;
|
|
}
|
|
|
|
value gr_draw_image(value im, value vx, value vy)
|
|
{
|
|
int x = Int_val(vx);
|
|
int y = Int_val(vy);
|
|
int wy = Wcvt(y) + 1 - Height_im(im);
|
|
int by = Bcvt(y) + 1 - Height_im(im);
|
|
|
|
gr_check_open();
|
|
if (Mask_im(im) != None) {
|
|
if(grremember_mode) {
|
|
XSetClipOrigin(grdisplay, grbstore.gc, x, by);
|
|
XSetClipMask(grdisplay, grbstore.gc, Mask_im(im));
|
|
}
|
|
if(grdisplay_mode) {
|
|
XSetClipOrigin(grdisplay, grwindow.gc, x, wy);
|
|
XSetClipMask(grdisplay, grwindow.gc, Mask_im(im));
|
|
}
|
|
}
|
|
if(grremember_mode)
|
|
XCopyArea(grdisplay, Data_im(im), grbstore.win, grbstore.gc,
|
|
0, 0,
|
|
Width_im(im), Height_im(im),
|
|
x, by);
|
|
if(grdisplay_mode)
|
|
XCopyArea(grdisplay, Data_im(im), grwindow.win, grwindow.gc,
|
|
0, 0,
|
|
Width_im(im), Height_im(im),
|
|
x, wy);
|
|
if (Mask_im(im) != None) {
|
|
if(grremember_mode)
|
|
XSetClipMask(grdisplay, grbstore.gc, None);
|
|
if(grdisplay_mode)
|
|
XSetClipMask(grdisplay, grwindow.gc, None);
|
|
}
|
|
if(grdisplay_mode)
|
|
XFlush(grdisplay);
|
|
return Val_unit;
|
|
}
|