source: trunk/src/org/expeditee/agents/ScaleFrameset.java@ 919

/**
 *    ScaleFrameset.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.agents;

import java.util.Collection;

import org.expeditee.gui.Frame;
import org.expeditee.gui.FrameIO;
import org.expeditee.gui.FrameKeyboardActions;
import org.expeditee.gui.Vector;
import org.expeditee.items.Item;
import org.expeditee.items.Line;
import org.expeditee.items.Text;
import org.expeditee.items.UserAppliedPermission;

public class ScaleFrameset extends DefaultAgent {
        private int _firstFrame = 1;

        private float _scale = 1F;

        private int _maxFrame = Integer.MAX_VALUE;

        public ScaleFrameset(float scale, int firstFrame, int maxFrame) {
                super();
                _firstFrame = firstFrame;
                _maxFrame = maxFrame;
                _scale = scale;
        }

        public ScaleFrameset(float scale) {
                this(scale, 1, Integer.MAX_VALUE);
        }

        @Override
        protected Frame process(Frame frame) {
                String framesetName = frame.getFramesetName();

                _maxFrame = Math.min(FrameIO.getLastNumber(framesetName), _maxFrame);

                // Scale each of the frames
                for (int i = _firstFrame; i <= _maxFrame; i++) {
                        scaleFrame(FrameIO.LoadFrame(framesetName + i), _scale);
                }
                // TODO fix this so it actually works properly!!
                // TODO figure out why it doesnt repaint correctly sometimes

                // TODO make this thread safe!
                FrameKeyboardActions.Refresh();

                return null;
        }
        
        public static void scaleFrame(Frame frame, float scaleFactor) {
                
                if (frame == null) {
                        return;
                }
                
                for (Vector v : frame.getVectors()) {
                        v.Source.scale(scaleFactor, 0, 0);
                }
                
                Collection<Item> items = frame.getVisibleItems();
                
                for(Item item : items) {
                        if(item instanceof Text && item.getSize() <= Text.MINIMUM_FONT_SIZE && scaleFactor < 1) {
                                return;
                        }
                }
                
                for (Item item : items) {
                        // This line is only needed for circles!!
                        // Need to really fix up the way this works!!
                        if (item.hasEnclosures())
                                continue;
                        if (!item.hasPermission(UserAppliedPermission.full))
                                continue;
                        item.invalidateAll();
                        if (!(item instanceof Line)) {
                                item.scale(scaleFactor, 0, 0);
                        }
                }

                for (Item item : items) {
                        if (!item.hasPermission(UserAppliedPermission.full))
                                continue;
                        // if (!(item instanceof Line))
                        item.updatePolygon();

                        if (item instanceof Line) {
                                ((Line) item).refreshStroke(item.getThickness());
                        }

                        item.invalidateAll();
                }
        }
}