/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package gplx.gfui; import gplx.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;

class Swt_img implements ImageAdp {
	public Swt_img(Gfui_kit kit, Image under, int w, int h) {this.kit = kit; this.under = under; this.width = w; this.height = h;}
	public Gfui_kit Kit() {return kit;} Gfui_kit kit;
	public SizeAdp Size() {if (size == null) size = SizeAdp_.new_(width, height); return size;} SizeAdp size;
	public int Width() {return width;} int width;
	public int Height() {return height;} int height;
	public Io_url Url() {return url;} public ImageAdp Url_(Io_url v) {url = v; return this;} Io_url url = Io_url_.Empty;
	public Object Under() {return under;} Image under;
	public boolean Disposed() {return under.isDisposed();}
	public void Rls() {under.dispose();}
	public void SaveAsBmp(Io_url url) {throw Err_.new_unimplemented();}
	public void SaveAsPng(Io_url url) {throw Err_.new_unimplemented();}
	public ImageAdp Resize(int trg_w, int trg_h) {return Extract_image(0, 0, width, height, trg_w, trg_h);}
	public ImageAdp Extract_image(RectAdp src_rect, SizeAdp trg_size) {return Extract_image(src_rect.X(), src_rect.Y(), src_rect.Width(), src_rect.Height(), trg_size.Width(), trg_size.Height());}
	public ImageAdp Extract_image(int src_x, int src_y, int src_w, int src_h, int trg_w, int trg_h) {
		Image trg_img = new Image(Display.getDefault(), trg_w, trg_h);
		GC gc = new GC(trg_img);
		gc.setAntialias(SWT.ON);
		gc.setInterpolation(SWT.HIGH);
		gc.drawImage(under, src_x, src_y, src_w, src_h, 0, 0, trg_w, trg_h);
		gc.dispose();
		return new Swt_img(kit, trg_img, trg_w, trg_h);
	}
}