org.apache.poi.hssf.usermodel.EscherGraphics2d Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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distributed under the License is distributed on an "AS IS" BASIS,
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See the License for the specific language governing permissions and
limitations under the License.
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package org.apache.poi.hssf.usermodel;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.image.BufferedImage;
import java.awt.image.BufferedImageOp;
import java.awt.image.ImageObserver;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderableImage;
import java.text.AttributedCharacterIterator;
import java.util.Map;
/**
* Translates Graphics2d calls into escher calls. The translation is lossy so
* many features are not supported and some just aren't implemented yet. If
* in doubt test the specific calls you wish to make. Graphics calls are
* always drawn into an EscherGroup so one will need to be created.
*
* Important:
*
* One important concept worth considering is that of font size. One of the
* difficulties in converting Graphics calls into escher drawing calls is that
* Excel does not have the concept of absolute pixel positions. It measures
* it's cell widths in 'characters' and the cell heights in points.
* Unfortunately it's not defined exactly what a type of character it's
* measuring. Presumably this is due to the fact that the Excel will be
* using different fonts on different platforms or even within the same
* platform.
*
* Because of this constraint you have to calculate the verticalPointsPerPixel.
* This the amount the font should be scaled by when
* you issue commands such as drawString(). A good way to calculate this
* is to use the follow formula:
*
*
* multipler = groupHeightInPoints / heightOfGroup
*
*
* The height of the group is calculated fairly simply by calculating the
* difference between the y coordinates of the bounding box of the shape. The
* height of the group can be calculated by using a convenience called
* HSSFClientAnchor.getAnchorHeightInPoints().
*
*
* @author Glen Stampoultzis (glens at apache.org)
*/
public final class EscherGraphics2d extends Graphics2D {
private EscherGraphics _escherGraphics;
private BufferedImage _img;
private AffineTransform _trans;
private Stroke _stroke;
private Paint _paint;
private Shape _deviceclip;
private POILogger logger = POILogFactory.getLogger(getClass());
/**
* Constructs one escher graphics object from an escher graphics object.
*
* @param escherGraphics the original EscherGraphics2d object to copy
*/
public EscherGraphics2d(EscherGraphics escherGraphics)
{
this._escherGraphics = escherGraphics;
setImg( new BufferedImage(1, 1, 2) );
setColor(Color.black);
}
public void addRenderingHints(Map map)
{
getG2D().addRenderingHints(map);
}
public void clearRect(int i, int j, int k, int l)
{
Paint paint1 = getPaint();
setColor(getBackground());
fillRect(i, j, k, l);
setPaint(paint1);
}
public void clip(Shape shape)
{
if(getDeviceclip() != null)
{
Area area = new Area(getClip());
if(shape != null)
area.intersect(new Area(shape));
shape = area;
}
setClip(shape);
}
public void clipRect(int x, int y, int width, int height)
{
clip(new Rectangle(x,y,width,height));
}
public void copyArea(int x, int y, int width, int height,
int dx, int dy)
{
getG2D().copyArea(x,y,width,height,dx,dy);
}
public Graphics create()
{
EscherGraphics2d g2d = new EscherGraphics2d(_escherGraphics);
return g2d;
}
public void dispose()
{
getEscherGraphics().dispose();
getG2D().dispose();
getImg().flush();
}
public void draw(Shape shape)
{
if (shape instanceof Line2D)
{
Line2D shape2d = (Line2D) shape;
int width = 0;
if (_stroke != null && _stroke instanceof BasicStroke) {
width = (int) ((BasicStroke)_stroke).getLineWidth() * 12700;
}
drawLine((int)shape2d.getX1(), (int)shape2d.getY1(), (int)shape2d.getX2(), (int)shape2d.getY2(), width);
}
else
{
if (logger.check(POILogger.WARN))
logger.log(POILogger.WARN, "draw not fully supported");
}
}
public void drawArc(int x, int y, int width, int height,
int startAngle, int arcAngle)
{
draw(new java.awt.geom.Arc2D.Float(x, y, width, height, startAngle, arcAngle, 0));
}
public void drawGlyphVector(GlyphVector g, float x, float y)
{
fill(g.getOutline(x, y));
}
public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
int sx2, int sy2, Color bgColor, ImageObserver imageobserver)
{
if (logger.check( POILogger.WARN ))
logger.log(POILogger.WARN,"drawImage() not supported");
return true;
}
public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
int sx2, int sy2, ImageObserver imageobserver)
{
if (logger.check( POILogger.WARN ))
logger.log(POILogger.WARN,"drawImage() not supported");
return drawImage(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2, null, imageobserver);
}
public boolean drawImage(Image image, int dx1, int dy1, int dx2, int dy2, Color bgColor, ImageObserver imageobserver)
{
if (logger.check( POILogger.WARN ))
logger.log(POILogger.WARN,"drawImage() not supported");
return true;
}
public boolean drawImage(Image img, int x, int y,
int width, int height,
ImageObserver observer)
{
return drawImage(img, x,y,width,height, null, observer);
}
public boolean drawImage(Image image, int x, int y, Color bgColor, ImageObserver imageobserver)
{
return drawImage(image, x, y, image.getWidth(imageobserver), image.getHeight(imageobserver), bgColor, imageobserver);
}
public boolean drawImage(Image image, int x, int y, ImageObserver imageobserver)
{
return drawImage(image, x, y, image.getWidth(imageobserver), image.getHeight(imageobserver), imageobserver);
}
public boolean drawImage(Image image, AffineTransform affinetransform, ImageObserver imageobserver)
{
AffineTransform affinetransform1 = (AffineTransform)getTrans().clone();
getTrans().concatenate(affinetransform);
drawImage(image, 0, 0, imageobserver);
setTrans( affinetransform1 );
return true;
}
public void drawImage(BufferedImage bufferedimage, BufferedImageOp op, int x, int y)
{
BufferedImage img = op.filter(bufferedimage, null);
drawImage(img, new AffineTransform(1.0F, 0.0F, 0.0F, 1.0F, x, y), null);
}
public void drawLine(int x1, int y1, int x2, int y2, int width)
{
getEscherGraphics().drawLine(x1,y1,x2,y2, width);
}
public void drawLine(int x1, int y1, int x2, int y2)
{
int width = 0;
if (_stroke != null && _stroke instanceof BasicStroke) {
width = (int) ((BasicStroke)_stroke).getLineWidth() * 12700;
}
getEscherGraphics().drawLine(x1,y1,x2,y2, width);
// draw(new GeneralPath(new java.awt.geom.Line2D.Float(x1, y1, x2, y2)));
}
public void drawOval(int x, int y, int width, int height)
{
getEscherGraphics().drawOval(x,y,width,height);
// draw(new java.awt.geom.Ellipse2D.Float(x, y, width, height));
}
public void drawPolygon(int xPoints[], int yPoints[],
int nPoints)
{
getEscherGraphics().drawPolygon(xPoints, yPoints, nPoints);
}
public void drawPolyline(int xPoints[], int yPoints[], int nPoints)
{
if(nPoints > 0)
{
GeneralPath generalpath = new GeneralPath();
generalpath.moveTo(xPoints[0], yPoints[0]);
for(int j = 1; j < nPoints; j++)
generalpath.lineTo(xPoints[j], yPoints[j]);
draw(generalpath);
}
}
public void drawRect(int x, int y, int width, int height)
{
_escherGraphics.drawRect(x,y,width,height);
}
public void drawRenderableImage(RenderableImage renderableimage, AffineTransform affinetransform)
{
drawRenderedImage(renderableimage.createDefaultRendering(), affinetransform);
}
public void drawRenderedImage(RenderedImage renderedimage, AffineTransform affinetransform)
{
BufferedImage bufferedimage = new BufferedImage(renderedimage.getColorModel(), renderedimage.getData().createCompatibleWritableRaster(), false, null);
bufferedimage.setData(renderedimage.getData());
drawImage(bufferedimage, affinetransform, null);
}
public void drawRoundRect(int i, int j, int k, int l, int i1, int j1)
{
draw(new java.awt.geom.RoundRectangle2D.Float(i, j, k, l, i1, j1));
}
public void drawString(String string, float x, float y)
{
getEscherGraphics().drawString(string, (int)x, (int)y);
}
public void drawString(String string, int x, int y)
{
getEscherGraphics().drawString(string, x, y);
}
public void drawString(AttributedCharacterIterator attributedcharacteriterator, float x, float y)
{
TextLayout textlayout = new TextLayout(attributedcharacteriterator, getFontRenderContext());
Paint paint1 = getPaint();
setColor(getColor());
fill(textlayout.getOutline(AffineTransform.getTranslateInstance(x, y)));
setPaint(paint1);
}
public void drawString(AttributedCharacterIterator attributedcharacteriterator, int x, int y)
{
getEscherGraphics().drawString(attributedcharacteriterator, x, y);
}
public void fill(Shape shape)
{
if (logger.check( POILogger.WARN ))
logger.log(POILogger.WARN,"fill(Shape) not supported");
}
public void fillArc(int i, int j, int k, int l, int i1, int j1)
{
fill(new java.awt.geom.Arc2D.Float(i, j, k, l, i1, j1, 2));
}
public void fillOval(int x, int y, int width, int height)
{
_escherGraphics.fillOval(x,y,width,height);
}
/**
* Fills a (closed) polygon, as defined by a pair of arrays, which
* hold the x and y coordinates.
*
* This draws the polygon, with nPoint line segments.
* The first nPoint - 1 line segments are
* drawn between sequential points
* (xPoints[i],yPoints[i],xPoints[i+1],yPoints[i+1]).
* The final line segment is a closing one, from the last point to
* the first (assuming they are different).
*
* The area inside of the polygon is defined by using an
* even-odd fill rule (also known as the alternating rule), and
* the area inside of it is filled.
* @param xPoints array of the x coordinates.
* @param yPoints array of the y coordinates.
* @param nPoints the total number of points in the polygon.
* @see java.awt.Graphics#drawPolygon(int[], int[], int)
*/
public void fillPolygon(int xPoints[], int yPoints[], int nPoints)
{
_escherGraphics.fillPolygon(xPoints, yPoints, nPoints);
}
public void fillRect(int x, int y, int width, int height)
{
getEscherGraphics().fillRect(x,y,width,height);
}
public void fillRoundRect(int x, int y, int width, int height,
int arcWidth, int arcHeight)
{
fill(new java.awt.geom.RoundRectangle2D.Float(x, y, width, height, arcWidth, arcHeight));
}
public Color getBackground()
{
return getEscherGraphics().getBackground();
}
public Shape getClip()
{
try
{
return getTrans().createInverse().createTransformedShape(getDeviceclip());
}
catch(Exception _ex)
{
return null;
}
}
public Rectangle getClipBounds()
{
if(getDeviceclip() != null) {
return getClip().getBounds();
}
return null;
}
public Color getColor()
{
return _escherGraphics.getColor();
}
public Composite getComposite()
{
return getG2D().getComposite();
}
public GraphicsConfiguration getDeviceConfiguration()
{
return getG2D().getDeviceConfiguration();
}
public Font getFont()
{
return getEscherGraphics().getFont();
}
public FontMetrics getFontMetrics(Font font)
{
return getEscherGraphics().getFontMetrics(font);
}
public FontRenderContext getFontRenderContext()
{
getG2D().setTransform(getTrans());
return getG2D().getFontRenderContext();
}
public Paint getPaint()
{
return _paint;
}
public Object getRenderingHint(java.awt.RenderingHints.Key key)
{
return getG2D().getRenderingHint(key);
}
public RenderingHints getRenderingHints()
{
return getG2D().getRenderingHints();
}
public Stroke getStroke()
{
return _stroke;
}
public AffineTransform getTransform()
{
return (AffineTransform)getTrans().clone();
}
public boolean hit(Rectangle rectangle, Shape shape, boolean flag)
{
getG2D().setTransform(getTrans());
getG2D().setStroke(getStroke());
getG2D().setClip(getClip());
return getG2D().hit(rectangle, shape, flag);
}
public void rotate(double d)
{
getTrans().rotate(d);
}
public void rotate(double d, double d1, double d2)
{
getTrans().rotate(d, d1, d2);
}
public void scale(double d, double d1)
{
getTrans().scale(d, d1);
}
public void setBackground(Color c)
{
getEscherGraphics().setBackground(c);
}
public void setClip(int i, int j, int k, int l)
{
setClip(new Rectangle(i, j, k, l));
}
public void setClip(Shape shape)
{
setDeviceclip( getTrans().createTransformedShape(shape) );
}
public void setColor(Color c)
{
_escherGraphics.setColor(c);
}
public void setComposite(Composite composite)
{
getG2D().setComposite(composite);
}
public void setFont(Font font)
{
getEscherGraphics().setFont(font);
}
public void setPaint(Paint paint1)
{
if(paint1 != null)
{
_paint = paint1;
if(paint1 instanceof Color)
setColor( (Color)paint1 );
}
}
public void setPaintMode()
{
getEscherGraphics().setPaintMode();
}
public void setRenderingHint(java.awt.RenderingHints.Key key, Object obj)
{
getG2D().setRenderingHint(key, obj);
}
public void setRenderingHints(Map map)
{
getG2D().setRenderingHints(map);
}
public void setStroke(Stroke s)
{
_stroke = s;
}
public void setTransform(AffineTransform affinetransform)
{
setTrans( (AffineTransform)affinetransform.clone() );
}
public void setXORMode(Color color1)
{
getEscherGraphics().setXORMode(color1);
}
public void shear(double d, double d1)
{
getTrans().shear(d, d1);
}
public void transform(AffineTransform affinetransform)
{
getTrans().concatenate(affinetransform);
}
// Image transformImage(Image image, Rectangle rectangle, Rectangle rectangle1, ImageObserver imageobserver, Color color1)
// {
// logger.log(POILogger.WARN,"transformImage() not supported");
// return null;
// }
//
// Image transformImage(Image image, int ai[], Rectangle rectangle, ImageObserver imageobserver, Color color1)
// {
// logger.log(POILogger.WARN,"transformImage() not supported");
// return null;
// }
public void translate(double d, double d1)
{
getTrans().translate(d, d1);
}
public void translate(int i, int j)
{
getTrans().translate(i, j);
}
private EscherGraphics getEscherGraphics()
{
return _escherGraphics;
}
private BufferedImage getImg()
{
return _img;
}
private void setImg( BufferedImage img )
{
this._img = img;
}
private Graphics2D getG2D()
{
return (Graphics2D) _img.getGraphics();
}
private AffineTransform getTrans()
{
return _trans;
}
private void setTrans( AffineTransform trans )
{
this._trans = trans;
}
private Shape getDeviceclip()
{
return _deviceclip;
}
private void setDeviceclip( Shape deviceclip )
{
this._deviceclip = deviceclip;
}
}