git.gag.com Git - fw/altos/blob - altosuilib/AltosSiteMapImage.java

   1 /*
   2  * Copyright © 2014 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.altosuilib_2;
  19
  20 import java.awt.*;
  21 import java.awt.image.*;
  22 import javax.imageio.ImageIO;
  23 import javax.swing.*;
  24 import java.io.*;
  25 import org.altusmetrum.altoslib_4.*;
  26
  27 public class AltosSiteMapImage {
  28         AltosSiteMapTile        tile;
  29         File                    file;
  30         BufferedImage           image;
  31         int                     width;
  32         int                     height;
  33         long                    used;
  34
  35         Thread  load_thread;
  36
  37         public boolean validate() {
  38                 if (image != null) {
  39                         AltosSiteMap.debug_component(tile, "valid");
  40                         return true;
  41                 } else {
  42                         AltosSiteMap.debug_component(tile, "loading");
  43                         load_thread = new Thread() {
  44                                         public void run() {
  45                                                 image = null;
  46                                                 try {
  47                                                         image = ImageIO.read(file);
  48                                                 } catch (Exception e) {
  49                                                 }
  50                                                 SwingUtilities.invokeLater( new Runnable() {
  51                                                                 public void run() {
  52                                                                         AltosSiteMap.debug_component(tile, "later");
  53                                                                         Graphics2D g2d = (Graphics2D) tile.getGraphics();
  54                                                                         tile.paint_graphics(g2d, image);
  55                                                                         load_thread = null;
  56                                                                 }
  57                                                         });
  58                                         }
  59                                 };
  60                         load_thread.start();
  61                         return false;
  62                 }
  63         }
  64
  65         public void flush() {
  66                 if (load_thread == null) {
  67                         AltosSiteMap.debug_component(tile, "flush");
  68                         image.flush();
  69                         image = null;
  70                 }
  71         }
  72
  73         public AltosSiteMapImage (AltosSiteMapTile tile, File file, int w, int h) throws IOException {
  74                 this.tile = tile;
  75                 this.file = file;
  76                 width = w;
  77                 height = h;
  78                 image = null;
  79                 used = 0;
  80         }
  81 }
  82