mirror of
https://github.com/dmolony/DiskBrowser.git
synced 2024-06-27 08:29:31 +00:00
309 lines
8.2 KiB
Java
309 lines
8.2 KiB
Java
package com.bytezone.diskbrowser.gui;
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import java.awt.*;
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import java.awt.event.InputEvent;
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import java.awt.event.KeyAdapter;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.geom.AffineTransform;
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import java.util.List;
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import javax.swing.JPanel;
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import javax.swing.Scrollable;
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import javax.swing.SwingConstants;
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import com.bytezone.diskbrowser.disk.Disk;
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import com.bytezone.diskbrowser.disk.DiskAddress;
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import com.bytezone.diskbrowser.disk.FormattedDisk;
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import com.bytezone.diskbrowser.disk.SectorType;
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import com.bytezone.diskbrowser.gui.DiskLayoutPanel.LayoutDetails;
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import com.bytezone.diskbrowser.gui.RedoHandler.RedoEvent;
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import com.bytezone.diskbrowser.gui.RedoHandler.RedoListener;
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class DiskLayoutImage extends JPanel implements Scrollable, RedoListener
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{
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private static final Cursor crosshairCursor = new Cursor (Cursor.CROSSHAIR_CURSOR);
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private static final Color[] lightColors =
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{ Color.WHITE, Color.YELLOW, Color.PINK, Color.CYAN, Color.ORANGE, Color.GREEN };
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private FormattedDisk disk;
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private LayoutDetails layoutDetails;
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private boolean showFreeSectors;
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private final DiskLayoutSelection selectionHandler = new DiskLayoutSelection ();
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private boolean redo;
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private boolean isRetina;
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// set defaults (used until a real disk is set)
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private int bw = 30;
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private int bh = 15;
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private int gw = 8;
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private int gh = 35;
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public DiskLayoutImage ()
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{
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setPreferredSize (new Dimension (240 + 1, 525 + 1));
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addMouseListener (new MyMouseListener ());
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setBackground (new Color (0xE0, 0xE0, 0xE0));
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setOpaque (true);
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addKeyListener (new MyKeyListener ());
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}
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public void setDisk (FormattedDisk disk, LayoutDetails details)
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{
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this.disk = disk;
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layoutDetails = details;
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bw = layoutDetails.block.width;
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bh = layoutDetails.block.height;
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gw = layoutDetails.grid.width;
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gh = layoutDetails.grid.height;
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setPreferredSize (new Dimension (gw * bw + 1, gh * bh + 1));
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selectionHandler.setSelection (null);
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Graphics2D g = (Graphics2D) this.getGraphics ();
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if (g != null) // panel might not be showing
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isRetina = g.getFontRenderContext ().getTransform ()
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.equals (AffineTransform.getScaleInstance (2.0, 2.0));
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repaint ();
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}
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public FormattedDisk getDisk ()
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{
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return disk;
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}
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public void setShowFreeSectors (boolean showFree)
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{
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showFreeSectors = showFree;
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repaint ();
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}
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void setSelection (List<DiskAddress> sectors)
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{
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selectionHandler.setSelection (sectors);
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if (sectors != null && sectors.size () > 0)
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{
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DiskAddress da = sectors.size () == 1 ? sectors.get (0) : sectors.get (1);
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// if (da != null)
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scrollRectToVisible (layoutDetails.getLocation (da));
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}
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repaint ();
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}
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@Override
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protected void paintComponent (Graphics g)
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{
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super.paintComponent (g);
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if (disk == null)
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return;
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Rectangle clipRect = g.getClipBounds ();
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Point p1 = new Point (clipRect.x / bw * bw, clipRect.y / bh * bh);
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Point p2 = new Point ((clipRect.x + clipRect.width - 1) / bw * bw,
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(clipRect.y + clipRect.height - 1) / bh * bh);
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int maxBlock = gw * gh;
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Disk d = disk.getDisk ();
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// this stops an index error when using alt-5 to switch to 512-byte blocks
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// if (maxBlock > d.getTotalBlocks ())
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// maxBlock = d.getTotalBlocks ();
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// the index error is caused by not recalculating the grid layout
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Graphics2D g2d = (Graphics2D) g;
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for (int y = p1.y; y <= p2.y; y += bh)
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for (int x = p1.x; x <= p2.x; x += bw)
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{
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int blockNo = y / bh * gw + x / bw;
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if (blockNo < maxBlock)
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{
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DiskAddress da = d.getDiskAddress (blockNo);
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boolean free = showFreeSectors && disk.isSectorFree (da);
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boolean selected = selectionHandler.isSelected (da);
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drawBlock (g2d, blockNo, x, y, free, selected);
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}
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}
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}
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private void drawBlock (Graphics2D g, int blockNo, int x, int y, boolean flagFree,
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boolean selected)
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{
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SectorType type = disk.getSectorType (blockNo);
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if (type == null)
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{
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System.out.println ("Sector type is null " + blockNo);
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return;
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}
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int offset = (bw - 4) / 2 + 1;
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Rectangle rect = new Rectangle (x, y, bw, bh);
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int width = rect.width - (isRetina ? 2 : 3) + 1;
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int height = rect.height - (isRetina ? 2 : 3) + 1;
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int offset2 = isRetina ? 1 : 2;
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// draw frame
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// if (false)
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// {
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// g.setColor (Color.GRAY);
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// // g.drawRect (rect.x, rect.y, rect.width, rect.height);
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// g.draw (rect);
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// }
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// draw blocks
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g.setColor (type.colour);
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g.fillRect (rect.x + offset2, rect.y + offset2, width, height);
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// draw an indicator in free blocks
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if (flagFree)
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{
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g.setColor (getContrastColor (type));
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g.drawOval (rect.x + offset - 2, rect.y + 4, 7, 7);
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}
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// draw an indicator in selected blocks
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if (selected)
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{
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g.setColor (getContrastColor (type));
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g.fillOval (rect.x + offset, rect.y + 6, 3, 3);
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}
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}
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private Color getContrastColor (SectorType type)
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{
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for (Color color : lightColors)
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if (type.colour == color)
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return Color.BLACK;
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return Color.WHITE;
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}
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@Override
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public Dimension getPreferredScrollableViewportSize ()
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{
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return new Dimension (240 + 1, 525 + 1); // floppy disk size
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}
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@Override
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public int getScrollableUnitIncrement (Rectangle visibleRect, int orientation,
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int direction)
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{
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return orientation == SwingConstants.HORIZONTAL ? bw : bh;
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}
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@Override
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public int getScrollableBlockIncrement (Rectangle visibleRect, int orientation,
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int direction)
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{
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return orientation == SwingConstants.HORIZONTAL ? bw * 4 : bh * 10;
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}
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@Override
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public boolean getScrollableTracksViewportHeight ()
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{
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return false;
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}
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@Override
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public boolean getScrollableTracksViewportWidth ()
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{
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return false;
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}
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@Override
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public void redo (RedoEvent redoEvent)
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{
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redo = true;
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SectorSelectedEvent event = (SectorSelectedEvent) redoEvent.value;
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setSelection (event.getSectors ());
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fireSectorSelectionEvent (event);
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redo = false;
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requestFocusInWindow ();
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}
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private void fireSectorSelectionEvent ()
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{
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SectorSelectedEvent event =
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new SectorSelectedEvent (this, selectionHandler.getHighlights (), disk);
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fireSectorSelectionEvent (event);
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}
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private void fireSectorSelectionEvent (SectorSelectedEvent event)
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{
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event.redo = redo;
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SectorSelectionListener[] listeners =
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(listenerList.getListeners (SectorSelectionListener.class));
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for (SectorSelectionListener listener : listeners)
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listener.sectorSelected (event);
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}
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public void addSectorSelectionListener (SectorSelectionListener listener)
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{
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listenerList.add (SectorSelectionListener.class, listener);
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}
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public void removeSectorSelectionListener (SectorSelectionListener listener)
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{
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listenerList.remove (SectorSelectionListener.class, listener);
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}
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class MyKeyListener extends KeyAdapter
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{
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@Override
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public void keyPressed (KeyEvent e)
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{
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switch (e.getKeyCode ())
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{
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case KeyEvent.VK_LEFT:
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case KeyEvent.VK_RIGHT:
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case KeyEvent.VK_UP:
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case KeyEvent.VK_DOWN:
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selectionHandler.cursorMove (disk, e);
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fireSectorSelectionEvent ();
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repaint ();
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}
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}
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}
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class MyMouseListener extends MouseAdapter
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{
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private Cursor currentCursor;
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@Override
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public void mouseClicked (MouseEvent e)
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{
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int x = e.getX () / bw;
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int y = e.getY () / bh;
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int blockNo = y * gw + x;
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DiskAddress da = disk.getDisk ().getDiskAddress (blockNo);
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boolean extend = ((e.getModifiersEx () & InputEvent.SHIFT_DOWN_MASK) > 0);
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boolean append = ((e.getModifiersEx () & InputEvent.CTRL_DOWN_MASK) > 0);
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selectionHandler.doClick (disk.getDisk (), da, extend, append);
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fireSectorSelectionEvent ();
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repaint ();
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requestFocusInWindow ();
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}
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@Override
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public void mouseEntered (MouseEvent e)
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{
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currentCursor = getCursor ();
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setCursor (crosshairCursor);
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}
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@Override
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public void mouseExited (MouseEvent e)
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{
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setCursor (currentCursor);
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}
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}
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} |