TGPainter.java

package org.herac.tuxguitar.gui.editors;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Path;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;

public class TGPainter {

  public static final int PATH_DRAW = 0x01;

  public static final int PATH_FILL = 0x02;

  private GC gc;

  private Path path;

  private boolean pathEmpty;

  private int style;
  
  public TGPainter(final GC gc) {
    if (this.gc != null && !this.gc.isDisposed()) {
      this.gc.dispose();
    }
    this.gc = gc;
  }

  public TGPainter(final Image image) {
    this(new GC(image));
  }

  public void addArc(float arg0, float arg1, float arg2, float arg3,
      float arg4, float arg5) {
    this.path.addArc(arg0, arg1, arg2, arg3, arg4, arg5);
    this.pathEmpty = false;
  }

  public void addOval(float arg0, float arg1, float arg2, float arg3) {
    this.path.addArc(arg0, arg1, arg2, arg3, 0, 360);
    this.pathEmpty = false;
  }

  public void addRectangle(float x, float y, float width, float height) {
    this.path.addRectangle(x, y, width, height);
    this.pathEmpty = false;
  }

  public void addRectangle(Rectangle rectangle) {
    this.path.addRectangle(rectangle.x, rectangle.y, rectangle.width,
        rectangle.height);
    this.pathEmpty = false;
  }

  public void addString(String arg0, float arg1, float arg2, Font arg3) {
    this.path.addString(arg0, arg1, arg2, arg3);
    this.pathEmpty = false;
  }

  public void closePath() {
    if (!this.pathEmpty) {
      if ((this.style & PATH_DRAW) != 0) {
        this.gc.drawPath(this.path);
      }
      if ((this.style & PATH_FILL) != 0) {
        this.gc.fillPath(this.path);
      }
    }
    this.style = 0;
    this.path.dispose();
    this.pathEmpty = true;
    this.setAntialias(false);
  }

  public void copyArea(Image image, int x, int y) {
    this.gc.copyArea(image, x, y);
  }

  public void cubicTo(float arg0, float arg1, float arg2, float arg3,
      float arg4, float arg5) {
    this.path.cubicTo(arg0, arg1, arg2, arg3, arg4, arg5);
    this.pathEmpty = false;
  }

  public void dispose() {
    this.gc.dispose();
  }

  public void drawImage(Image image, int x, int y) {
    this.setAdvanced(false);
    this.gc.drawImage(image, x, y);
  }

  public void drawImage(Image image, int srcX, int srcY, int srcWidth,
      int srcHeight, int destX, int destY, int destWidth, int destHeight) {
    this.setAdvanced(false);
    this.gc.drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY,
        destWidth, destHeight);
  }

  public void drawPolygon(int[] arg0) {
    this.gc.drawPolygon(arg0);
  }

  public void drawString(String string, int x, int y) {
    this.setAdvanced(false);
    this.gc.drawString(string, x, y);
  }

  public void drawString(String string, int x, int y, boolean isTransparent) {
    this.setAdvanced(false);
    this.gc.drawString(string, x, y, isTransparent);
  }

  public void fillPolygon(int[] arg0) {
    this.gc.fillPolygon(arg0);
  }

  public GC getGC() {
    return this.gc;
  }

  public Point getStringExtent(String string) {
    this.setAdvanced(false);
    return this.gc.stringExtent(string);
  }

  public void initPath() {
    this.initPath(PATH_DRAW);
  }

  public void initPath(int style) {
    this.style = style;
    this.path = new Path(this.gc.getDevice());
    this.pathEmpty = true;
    this.setAntialias(true);
  }

  public void lineTo(float arg0, float arg1) {
    this.path.lineTo(arg0, arg1);
    this.pathEmpty = false;
  }

  public void moveTo(float arg0, float arg1) {
    this.path.moveTo(arg0, arg1);
    this.pathEmpty = false;
  }

  public void setAdvanced(boolean advanced) {
    if (!TGPainterUtils.FORCE_OS_DEFAULTS) {
      this.gc.setAdvanced(advanced);
    }
  }

  public void setAlpha(int alpha) {
    this.gc.setAlpha(alpha);
  }

  public void setAntialias(boolean enabled) {
    if (!TGPainterUtils.FORCE_OS_DEFAULTS) {
      this.gc.setAntialias(enabled ? SWT.ON : SWT.OFF);
    }
  }

  public void setBackground(Color arg0) {
    this.gc.setBackground(arg0);
  }

  public void setFont(Font arg0) {
    this.gc.setFont(arg0);
  }

  public void setForeground(Color arg0) {
    this.gc.setForeground(arg0);
  }

  public void setLineStyle(int arg0) {
    this.gc.setLineStyle(arg0);
  }

  public void setLineWidth(int arg0) {
    this.gc.setLineWidth(arg0);
  }
}