Package org.gudy.azureus2.ui.swt.mainwindow

Source Code of org.gudy.azureus2.ui.swt.mainwindow.SplashWindow

/*
* Created on Apr 30, 2004
* Created by Olivier Chalouhi
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved.
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.gudy.azureus2.ui.swt.mainwindow;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.ui.swt.Utils;

import com.aelitis.azureus.ui.IUIIntializer;
import com.aelitis.azureus.ui.InitializerListener;
import com.aelitis.azureus.ui.swt.imageloader.ImageLoader;
import com.aelitis.azureus.ui.swt.utils.ColorCache;

/**
* The initial Splash Screen shown while azureus loads
*/
public class SplashWindow
  implements InitializerListener
{
  private static final String IMG_SPLASH = "azureus_splash";

  // config 1 : PB_HEIGHT = 3, PB_INVERTED = false
  // config 2 : PB_HEIGHT = 3, PB_INVERTED = true, PB_INVERTED_BG_HEIGHT = 3
  // config 3 : PB_HEIGHT = 2, PB_INVERTED = true, PB_INVERTED_BG_HEIGHT = 2
  // config 4 : PB_HEIGHT = 3, PB_INVERTED = true, PB_INVERTED_BG_HEIGHT = 1, PB_INVERTED_X_OFFSET = 4
 
  protected static final int OFFSET_LEFT = 10;
  protected static final int OFFSET_RIGHT = 10;
  protected static final int OFFSET_BOTTOM = 12;
  protected static final int PB_HEIGHT = 2;
 
  protected static final boolean PB_INVERTED = true;
  protected static final int PB_INVERTED_BG_HEIGHT = 2;
  protected static final int PB_INVERTED_X_OFFSET = 0;
 
  protected static final boolean DISPLAY_BORDER = true;

  Display display;

  IUIIntializer initializer;

  Shell splash;

  //Label currentTask;
  //ProgressBar percentDone;

  Canvas canvas;

  Image background;

  int width;

  int height;

  Image current;

  Color progressBarColor;

  Color textColor;
 
  Color fadedGreyColor;

  Font textFont;

  private String task;

  private int percent;

  private boolean updating;
 
  int pbX, pbY, pbWidth;

  public SplashWindow(Display display) {
    this(display, null);
  }

  public static void main(String args[]) {
    Display display = new Display();

    final SplashWindow splash = new SplashWindow(display);

    Thread t = new Thread() {
      public void run() {
        try {
          int percent = 0;
          while (percent <= 100) {
            splash.reportPercent(percent++);
            splash.reportCurrentTask(percent
                + "% Loading dbnvsudn vjksfdh fgshdu fbhsduh bvsfd fbsd fbvsdb fsuid opnum supnum boopergood haha text doot subliminal.".substring(
                    0, (int) (1 + Math.random() * 110)));
            Thread.sleep(100);
          }
        } catch (Exception e) {
          // TODO: handle exception
        }
        splash.closeSplash();
      }
    };
    t.start();

    while (!splash.splash.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }

  public SplashWindow(Display _display, IUIIntializer initializer) {
    this.display = _display;
    this.initializer = initializer;

    splash = new Shell(display, SWT.NO_TRIM);
    splash.setText(Constants.APP_NAME);
    Utils.setShellIcon(splash);

    splash.setLayout(new FillLayout());
    canvas = new Canvas(splash, SWT.DOUBLE_BUFFERED);

    ImageLoader imageLoader = ImageLoader.getInstance();
    background = imageLoader.getImage(IMG_SPLASH);
    if (ImageLoader.isRealImage(background)) {
      width = background.getBounds().width;
      height = background.getBounds().height;
     
      width = 500;
      height = 250;

      current = new Image(display, background, SWT.IMAGE_COPY);
    } else {
      width = 400;
      height = 80;
      background = new Image(display, width, height);
      GC gc = new GC(background);
      try {
        gc.setBackground(ColorCache.getColor(display, 255, 255, 255));
        gc.fillRectangle(0, 0, width, height);
        gc.drawRectangle(0, 0, width - 1, height - 1);
        gc.drawText(Constants.APP_NAME, 5, 5, true);
      } finally {
        gc.dispose();
      }
      current = new Image(display, background, SWT.IMAGE_COPY);
    }

    progressBarColor = new Color(display, 21, 92, 198);
    textColor = new Color(display, 90, 90, 90);
    fadedGreyColor = new Color(display, 170, 170, 170);

   
    pbX = OFFSET_LEFT;
    pbY = height - OFFSET_BOTTOM;
    pbWidth = width - OFFSET_LEFT - OFFSET_RIGHT;

    canvas.setSize(width, height);
    Font font = canvas.getFont();
    FontData[] fdata = font.getFontData();
    fdata[0].setHeight(Constants.isOSX ? 9 : 7);
    textFont = new Font(display, fdata);

    canvas.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent event) {
        if (current == null) {
          return;
        }
        Rectangle imgBounds = current.getBounds();
        Rectangle canvasBounds = canvas.getBounds();
        event.gc.drawImage(current, (canvasBounds.width - imgBounds.width) / 2, (canvasBounds.height - imgBounds.height - 30) / 2);

        GC gc = event.gc;
       
        try {
          gc.setAntialias(SWT.ON);
          gc.setTextAntialias(SWT.ON);
        } catch (Exception e) {

        }
       
        int y = pbY;

        if (task != null) {
          gc.setFont(textFont);
          gc.setForeground(textColor);
          Point extent = gc.textExtent(task);
          y = pbY - extent.y - 5;
          gc.setClipping(OFFSET_LEFT, y, width - (OFFSET_LEFT * 2), extent.y);
          gc.drawText(task, OFFSET_LEFT, y, true);
          gc.setClipping((Rectangle) null);
        }

        if(PB_INVERTED){
          gc.setForeground(fadedGreyColor);
          gc.setBackground(fadedGreyColor);
          gc.fillRectangle(pbX-PB_INVERTED_X_OFFSET, pbY + Math.abs(PB_HEIGHT - PB_INVERTED_BG_HEIGHT) / 2, pbWidth+2*PB_INVERTED_X_OFFSET, PB_INVERTED_BG_HEIGHT);
          gc.setForeground(progressBarColor);
          gc.setBackground(progressBarColor);
          gc.fillRectangle(pbX, pbY, percent * pbWidth / 100, PB_HEIGHT);
         
        } else {
          gc.setForeground(progressBarColor);
          gc.setBackground(progressBarColor);
          if(!DISPLAY_BORDER){
            gc.fillRectangle(pbX, pbY, percent * pbWidth / 100, PB_HEIGHT);
          }
        }
       
        if(DISPLAY_BORDER){
          gc.setForeground(fadedGreyColor);
          gc.setBackground(fadedGreyColor);
          canvasBounds.height--;
          canvasBounds.width--;
          gc.drawRectangle(canvasBounds);
        }

     
      }
    });

    //splash.pack();
    splash.setSize(width, height);
    //splash.layout();
    Utils.centreWindow(splash);
    splash.open();
   
    if (initializer != null) {
      initializer.addListener(this);
    }
  }

  public static void create(final Display display, final IUIIntializer initializer) {
    Utils.execSWTThread(new AERunnable() {
      public void runSupport() {
        if (display == null || display.isDisposed())
          return;

        new SplashWindow(display, initializer);
      }
    });
  }

  /*
   * Should be called by the GUI thread
   */
  public void closeSplash() {
    Utils.execSWTThread(new AERunnable() {
      public void runSupport() {
        try {
          if (initializer != null)
            initializer.removeListener(SplashWindow.this);
          if (splash != null && !splash.isDisposed())
            splash.dispose();
          if (current != null && !current.isDisposed()) {
            current.dispose();
          }
          if (progressBarColor != null && !progressBarColor.isDisposed()) {
            progressBarColor.dispose();
          }
          if (fadedGreyColor != null && !fadedGreyColor.isDisposed()) {
            fadedGreyColor.dispose();
          }
          if (textColor != null && !textColor.isDisposed()) {
            textColor.dispose();
          }
          if (textFont != null && !textFont.isDisposed()) {
            textFont.dispose();
          }

          ImageLoader imageLoader = ImageLoader.getInstance();
          imageLoader.releaseImage(IMG_SPLASH);
          imageLoader.collectGarbage();

        } catch (Exception e) {
          //ignore
        }
      }
    });
  }

  /*
   * STProgressListener implementation
   */

  // AzureusCoreListener
  public void reportCurrentTask(final String task) {
    //Ensure that display is set and not disposed
    if (display == null || display.isDisposed())
      return;

    if (this.task == null || this.task.compareTo(task) != 0) {
      this.task = task;
      update();
    }
  }

  /**
   *
   *
   * @since 3.0.0.7
   */
  private void update() {
    if (updating && !Utils.isThisThreadSWT()) {
      return;
    }

    updating = true;
    //Post runnable to SWTThread
    Utils.execSWTThread(new AERunnable() {
      public void runSupport() {
        updating = false;
        if (splash == null || splash.isDisposed()) {
          return;
        }

        canvas.redraw(0, height - 50, width, height, true);
        canvas.update();
      }
    });
  }

  public int getPercent() {
    return percent;
  }

  // AzureusCoreListener
  public void reportPercent(final int percent) {
    //System.out.println("splash: " + percent + " via " + Debug.getCompressedStackTrace());
    //Ensure that display is set and not disposed
    if (display == null || display.isDisposed())
      return;

    //OK Tricky way to close the splash window BUT ... sending a percent > 100 means closing
    if (percent > 100) {
      closeSplash();
      return;
    }

    if (this.percent != percent) {
      this.percent = percent;
      update();
    }
  }

}
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