108 lines
3.4 KiB
C
108 lines
3.4 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License, with */
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/* the special exception on linking described in file ../../LICENSE. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include "libgraph.h"
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#include "image.h"
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#include <alloc.h>
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#include <custom.h>
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static void caml_gr_free_image(value im)
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{
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XFreePixmap(caml_gr_display, Data_im(im));
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if (Mask_im(im) != None) XFreePixmap(caml_gr_display, Mask_im(im));
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}
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static struct custom_operations image_ops = {
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"_image",
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caml_gr_free_image,
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custom_compare_default,
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custom_hash_default,
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custom_serialize_default,
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custom_deserialize_default
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};
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#define Max_image_mem 2000000
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value caml_gr_new_image(int w, int h)
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{
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value res = alloc_custom(&image_ops, sizeof(struct grimage),
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w * h, Max_image_mem);
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Width_im(res) = w;
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Height_im(res) = h;
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Data_im(res) = XCreatePixmap(caml_gr_display, caml_gr_window.win, w, h,
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XDefaultDepth(caml_gr_display, caml_gr_screen));
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Mask_im(res) = None;
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return res;
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}
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value caml_gr_create_image(value vw, value vh)
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{
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caml_gr_check_open();
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return caml_gr_new_image(Int_val(vw), Int_val(vh));
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}
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value caml_gr_blit_image(value im, value vx, value vy)
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{
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int x = Int_val(vx);
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int y = Int_val(vy);
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caml_gr_check_open();
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XCopyArea(caml_gr_display, caml_gr_bstore.win, Data_im(im), caml_gr_bstore.gc,
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x, Bcvt(y) + 1 - Height_im(im),
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Width_im(im), Height_im(im),
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0, 0);
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return Val_unit;
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}
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value caml_gr_draw_image(value im, value vx, value vy)
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{
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int x = Int_val(vx);
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int y = Int_val(vy);
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int wy = Wcvt(y) + 1 - Height_im(im);
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int by = Bcvt(y) + 1 - Height_im(im);
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caml_gr_check_open();
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if (Mask_im(im) != None) {
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if(caml_gr_remember_modeflag) {
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XSetClipOrigin(caml_gr_display, caml_gr_bstore.gc, x, by);
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XSetClipMask(caml_gr_display, caml_gr_bstore.gc, Mask_im(im));
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}
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if(caml_gr_display_modeflag) {
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XSetClipOrigin(caml_gr_display, caml_gr_window.gc, x, wy);
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XSetClipMask(caml_gr_display, caml_gr_window.gc, Mask_im(im));
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}
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}
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if(caml_gr_remember_modeflag)
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XCopyArea(caml_gr_display, Data_im(im), caml_gr_bstore.win, caml_gr_bstore.gc,
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0, 0,
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Width_im(im), Height_im(im),
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x, by);
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if(caml_gr_display_modeflag)
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XCopyArea(caml_gr_display, Data_im(im), caml_gr_window.win, caml_gr_window.gc,
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0, 0,
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Width_im(im), Height_im(im),
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x, wy);
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if (Mask_im(im) != None) {
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if(caml_gr_remember_modeflag)
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XSetClipMask(caml_gr_display, caml_gr_bstore.gc, None);
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if(caml_gr_display_modeflag)
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XSetClipMask(caml_gr_display, caml_gr_window.gc, None);
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}
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if(caml_gr_display_modeflag)
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XFlush(caml_gr_display);
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return Val_unit;
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}
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/* eof $Id$ */
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