451 lines
15 KiB
Java
451 lines
15 KiB
Java
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package org.apache.poi.hssf.usermodel;
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import org.apache.poi.util.POILogFactory;
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import org.apache.poi.util.POILogger;
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import org.apache.poi.hssf.util.HSSFColor;
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import java.awt.*;
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import java.awt.image.ImageObserver;
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import java.text.AttributedCharacterIterator;
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/**
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* Translates Graphics calls into escher calls. The translation is lossy so
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* many features are not supported and some just aren't implemented yet. If
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* in doubt test the specific calls you wish to make. Graphics calls are
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* always performed into an EscherGroup so one will need to be created.
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* <p>
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* <b>Important:</b>
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* <blockquote>
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* One important concept worth considering is that of font size. One of the
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* difficulties in converting Graphics calls into escher drawing calls is that
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* Excel does not have the concept of absolute pixel positions. It measures
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* it's cell widths in 'characters' and the cell heights in points.
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* Unfortunately it's not defined exactly what a type of character it's
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* measuring. Presumably this is due to the fact that the Excel will be
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* using different fonts on different platforms or even within the same
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* platform.
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* <p>
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* Because of this constraint we've had to calculate the
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* verticalPointsPerPixel. This the amount the font should be scaled by when
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* you issue commands such as drawString(). A good way to calculate this
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* is to use the follow formula:
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* <p>
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* <pre>
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* multipler = groupHeightInPoints / heightOfGroup
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* </pre>
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* <p>
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* The height of the group is calculated fairly simply by calculating the
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* difference between the y coordinates of the bounding box of the shape. The
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* height of the group can be calculated by using a convenience called
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* <code>HSSFClientAnchor.getAnchorHeightInPoints()</code>.
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* </blockquote>
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*
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* @author Glen Stampoultzis (glens at apache.org)
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*/
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public class EscherGraphics
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extends Graphics
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{
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private HSSFShapeGroup escherGroup;
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private HSSFWorkbook workbook;
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private float verticalPointsPerPixel = 1.0f;
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private float verticalPixelsPerPoint;
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private Color foreground;
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private Color background = Color.white;
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private Font font;
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private static POILogger logger = POILogFactory.getLogger(EscherGraphics.class);
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/**
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* Construct an escher graphics object.
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*
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* @param escherGroup The escher group to write the graphics calls into.
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* @param workbook The workbook we are using.
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* @param forecolor The foreground color to use as default.
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* @param verticalPointsPerPixel The font multiplier. (See class description for information on how this works.).
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*/
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public EscherGraphics(HSSFShapeGroup escherGroup, HSSFWorkbook workbook, Color forecolor, float verticalPointsPerPixel )
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{
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this.escherGroup = escherGroup;
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this.workbook = workbook;
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this.verticalPointsPerPixel = verticalPointsPerPixel;
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this.verticalPixelsPerPoint = 1 / verticalPointsPerPixel;
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this.font = new Font("Arial", 0, 10);
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this.foreground = forecolor;
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// background = backcolor;
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}
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/**
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* Constructs an escher graphics object.
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*
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* @param escherGroup The escher group to write the graphics calls into.
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* @param workbook The workbook we are using.
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* @param foreground The foreground color to use as default.
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* @param verticalPointsPerPixel The font multiplier. (See class description for information on how this works.).
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* @param font The font to use.
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*/
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EscherGraphics( HSSFShapeGroup escherGroup, HSSFWorkbook workbook, Color foreground, Font font, float verticalPointsPerPixel )
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{
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this.escherGroup = escherGroup;
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this.workbook = workbook;
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this.foreground = foreground;
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// this.background = background;
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this.font = font;
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this.verticalPointsPerPixel = verticalPointsPerPixel;
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this.verticalPixelsPerPoint = 1 / verticalPointsPerPixel;
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}
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/**
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* Constructs an escher graphics object.
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*
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* @param escherGroup The escher group to write the graphics calls into.
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* @param workbook The workbook we are using.
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* @param forecolor The default foreground color.
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*/
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// public EscherGraphics( HSSFShapeGroup escherGroup, HSSFWorkbook workbook, Color forecolor)
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// {
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// this(escherGroup, workbook, forecolor, 1.0f);
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// }
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public void clearRect(int x, int y, int width, int height)
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{
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Color color = foreground;
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setColor(background);
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fillRect(x,y,width,height);
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setColor(color);
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}
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public void clipRect(int x, int y, int width, int height)
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{
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logger.log(POILogger.WARN,"clipRect not supported");
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}
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public void copyArea(int x, int y, int width, int height, int dx, int dy)
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{
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logger.log(POILogger.WARN,"copyArea not supported");
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}
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public Graphics create()
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{
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EscherGraphics g = new EscherGraphics(escherGroup, workbook,
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foreground, font, verticalPointsPerPixel );
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return g;
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}
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public void dispose()
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{
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}
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public void drawArc(int x, int y, int width, int height,
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int startAngle, int arcAngle)
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{
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logger.log(POILogger.WARN,"drawArc not supported");
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}
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public boolean drawImage(Image img,
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int dx1, int dy1, int dx2, int dy2,
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int sx1, int sy1, int sx2, int sy2,
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Color bgcolor,
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ImageObserver observer)
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{
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logger.log(POILogger.WARN,"drawImage not supported");
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return true;
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}
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public boolean drawImage(Image img,
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int dx1, int dy1, int dx2, int dy2,
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int sx1, int sy1, int sx2, int sy2,
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ImageObserver observer)
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{
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logger.log(POILogger.WARN,"drawImage not supported");
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return true;
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}
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public boolean drawImage(Image image, int i, int j, int k, int l, Color color, ImageObserver imageobserver)
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{
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return drawImage(image, i, j, i + k, j + l, 0, 0, image.getWidth(imageobserver), image.getHeight(imageobserver), color, imageobserver);
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}
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public boolean drawImage(Image image, int i, int j, int k, int l, ImageObserver imageobserver)
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{
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return drawImage(image, i, j, i + k, j + l, 0, 0, image.getWidth(imageobserver), image.getHeight(imageobserver), imageobserver);
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}
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public boolean drawImage(Image image, int i, int j, Color color, ImageObserver imageobserver)
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{
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return drawImage(image, i, j, image.getWidth(imageobserver), image.getHeight(imageobserver), color, imageobserver);
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}
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public boolean drawImage(Image image, int i, int j, ImageObserver imageobserver)
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{
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return drawImage(image, i, j, image.getWidth(imageobserver), image.getHeight(imageobserver), imageobserver);
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}
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public void drawLine(int x1, int y1, int x2, int y2)
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{
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HSSFSimpleShape shape = escherGroup.createShape(new HSSFChildAnchor(x1, y1, x2, y2) );
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shape.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
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shape.setLineWidth(0);
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shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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}
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public void drawOval(int x, int y, int width, int height)
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{
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HSSFSimpleShape shape = escherGroup.createShape(new HSSFChildAnchor(x,y,x+width,y+height) );
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shape.setShapeType(HSSFSimpleShape.OBJECT_TYPE_OVAL);
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shape.setLineWidth(0);
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shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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shape.setNoFill(true);
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}
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public void drawPolygon(int xPoints[], int yPoints[],
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int nPoints)
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{
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int right = findBiggest(xPoints);
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int bottom = findBiggest(yPoints);
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int left = findSmallest(xPoints);
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int top = findSmallest(yPoints);
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HSSFPolygon shape = escherGroup.createPolygon(new HSSFChildAnchor(left,top,right,bottom) );
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shape.setPolygonDrawArea(right - left, bottom - top);
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shape.setPoints(addToAll(xPoints, -left), addToAll(yPoints, -top));
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shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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shape.setLineWidth(0);
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shape.setNoFill(true);
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}
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private int[] addToAll( int[] values, int amount )
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{
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int[] result = new int[values.length];
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for ( int i = 0; i < values.length; i++ )
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result[i] = values[i] + amount;
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return result;
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}
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public void drawPolyline(int xPoints[], int yPoints[],
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int nPoints)
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{
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logger.log(POILogger.WARN,"drawPolyline not supported");
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}
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public void drawRect(int x, int y, int width, int height)
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{
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logger.log(POILogger.WARN,"drawRect not supported");
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}
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public void drawRoundRect(int x, int y, int width, int height,
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int arcWidth, int arcHeight)
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{
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logger.log(POILogger.WARN,"drawRoundRect not supported");
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}
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public void drawString(String str, int x, int y)
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{
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if (str == null || str.equals(""))
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return;
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Font excelFont = font;
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if ( font.getName().equals( "SansSerif" ) )
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{
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excelFont = new Font( "Arial", font.getStyle(), (int) ( font.getSize() / verticalPixelsPerPoint ) );
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}
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else
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{
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excelFont = new Font( font.getName(), font.getStyle(), (int) ( font.getSize() / verticalPixelsPerPoint ));
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}
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FontDetails d = StaticFontMetrics.getFontDetails( excelFont );
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int width = (int) ( (d.getStringWidth( str ) * 2.5) + 12 );
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int height = (int) ( ( font.getSize() * 2.0 * verticalPixelsPerPoint ) + 6 );
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y -= ( font.getSize() * verticalPixelsPerPoint ); // we want to draw the shape from the top-left
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HSSFTextbox textbox = escherGroup.createTextbox( new HSSFChildAnchor( x, y, x + width, y + height ) );
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textbox.setNoFill( true );
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textbox.setLineStyle( HSSFShape.LINESTYLE_NONE );
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HSSFRichTextString s = new HSSFRichTextString( str );
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HSSFFont hssfFont = matchFont( excelFont );
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s.applyFont( hssfFont );
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textbox.setString( s );
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}
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private HSSFFont matchFont( Font font )
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{
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HSSFColor hssfColor = workbook.getCustomPalette()
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.findColor((byte)foreground.getRed(), (byte)foreground.getGreen(), (byte)foreground.getBlue());
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if (hssfColor == null)
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hssfColor = workbook.getCustomPalette().findSimilarColor((byte)foreground.getRed(), (byte)foreground.getGreen(), (byte)foreground.getBlue());
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boolean bold = (font.getStyle() & Font.BOLD) != 0;
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boolean italic = (font.getStyle() & Font.ITALIC) != 0;
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HSSFFont hssfFont = workbook.findFont(bold ? HSSFFont.BOLDWEIGHT_BOLD : 0,
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hssfColor.getIndex(),
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(short)(font.getSize() * 20),
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font.getName(),
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italic,
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false,
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(short)0,
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(byte)0);
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if (hssfFont == null)
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{
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hssfFont = workbook.createFont();
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hssfFont.setBoldweight(bold ? HSSFFont.BOLDWEIGHT_BOLD : 0);
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hssfFont.setColor(hssfColor.getIndex());
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hssfFont.setFontHeight((short)(font.getSize() * 20));
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hssfFont.setFontName(font.getName());
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hssfFont.setItalic(italic);
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hssfFont.setStrikeout(false);
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hssfFont.setTypeOffset((short) 0);
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hssfFont.setUnderline((byte) 0);
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}
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return hssfFont;
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}
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public void drawString(AttributedCharacterIterator iterator,
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int x, int y)
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{
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logger.log(POILogger.WARN,"drawString not supported");
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}
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public void fillArc(int x, int y, int width, int height,
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int startAngle, int arcAngle)
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{
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logger.log(POILogger.WARN,"fillArc not supported");
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}
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public void fillOval(int x, int y, int width, int height)
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{
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HSSFSimpleShape shape = escherGroup.createShape(new HSSFChildAnchor( x, y, x + width, y + height ) );
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shape.setShapeType(HSSFSimpleShape.OBJECT_TYPE_OVAL);
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shape.setLineStyle(HSSFShape.LINESTYLE_NONE);
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shape.setFillColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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}
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public void fillPolygon(int xPoints[], int yPoints[],
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int nPoints)
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{
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int right = findBiggest(xPoints);
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int bottom = findBiggest(yPoints);
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int left = findSmallest(xPoints);
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int top = findSmallest(yPoints);
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HSSFPolygon shape = escherGroup.createPolygon(new HSSFChildAnchor(left,top,right,bottom) );
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shape.setPolygonDrawArea(right - left, bottom - top);
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shape.setPoints(addToAll(xPoints, -left), addToAll(yPoints, -top));
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shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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shape.setFillColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
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}
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private int findBiggest( int[] values )
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{
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int result = Integer.MIN_VALUE;
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for ( int i = 0; i < values.length; i++ )
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{
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if (values[i] > result)
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result = values[i];
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}
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return result;
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}
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private int findSmallest( int[] values )
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{
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int result = Integer.MAX_VALUE;
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for ( int i = 0; i < values.length; i++ )
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{
|
||
|
|
if (values[i] < result)
|
||
|
|
result = values[i];
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void fillRect(int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
HSSFSimpleShape shape = escherGroup.createShape(new HSSFChildAnchor( x, y, x + width, y + height ) );
|
||
|
|
shape.setShapeType(HSSFSimpleShape.OBJECT_TYPE_RECTANGLE);
|
||
|
|
shape.setLineStyle(HSSFShape.LINESTYLE_NONE);
|
||
|
|
shape.setFillColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
|
||
|
|
shape.setLineStyleColor(foreground.getRed(), foreground.getGreen(), foreground.getBlue());
|
||
|
|
}
|
||
|
|
|
||
|
|
public void fillRoundRect(int x, int y, int width, int height,
|
||
|
|
int arcWidth, int arcHeight)
|
||
|
|
{
|
||
|
|
logger.log(POILogger.WARN,"fillRoundRect not supported");
|
||
|
|
}
|
||
|
|
|
||
|
|
public Shape getClip()
|
||
|
|
{
|
||
|
|
return getClipBounds();
|
||
|
|
}
|
||
|
|
|
||
|
|
public Rectangle getClipBounds()
|
||
|
|
{
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public Rectangle getClipRect()
|
||
|
|
{
|
||
|
|
return getClipBounds();
|
||
|
|
}
|
||
|
|
|
||
|
|
public Color getColor()
|
||
|
|
{
|
||
|
|
return foreground;
|
||
|
|
}
|
||
|
|
|
||
|
|
public Font getFont()
|
||
|
|
{
|
||
|
|
return font;
|
||
|
|
}
|
||
|
|
|
||
|
|
public FontMetrics getFontMetrics(Font f)
|
||
|
|
{
|
||
|
|
return Toolkit.getDefaultToolkit().getFontMetrics(f);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setClip(int x, int y, int width, int height)
|
||
|
|
{
|
||
|
|
setClip(((Shape) (new Rectangle(x,y,width,height))));
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setClip(Shape shape)
|
||
|
|
{
|
||
|
|
// ignore... not implemented
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setColor(Color color)
|
||
|
|
{
|
||
|
|
foreground = color;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setFont(Font f)
|
||
|
|
{
|
||
|
|
font = f;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setPaintMode()
|
||
|
|
{
|
||
|
|
logger.log(POILogger.WARN,"setPaintMode not supported");
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setXORMode(Color color)
|
||
|
|
{
|
||
|
|
logger.log(POILogger.WARN,"setXORMode not supported");
|
||
|
|
}
|
||
|
|
|
||
|
|
public void translate(int x, int y)
|
||
|
|
{
|
||
|
|
logger.log(POILogger.WARN,"translate not supported");
|
||
|
|
}
|
||
|
|
|
||
|
|
public Color getBackground()
|
||
|
|
{
|
||
|
|
return background;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setBackground( Color background )
|
||
|
|
{
|
||
|
|
this.background = background;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|