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org.apache.poi.xslf.usermodel.RenderableShape Maven / Gradle / Ivy
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* 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
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*/
package org.apache.poi.xslf.usermodel;
import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.TexturePaint;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Comparator;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.openxml4j.opc.PackageRelationship;
import org.apache.poi.util.Internal;
import org.apache.poi.util.Units;
import org.apache.poi.xslf.model.PropertyFetcher;
import org.apache.poi.xslf.model.geom.Context;
import org.apache.poi.xslf.model.geom.CustomGeometry;
import org.apache.poi.xslf.model.geom.Guide;
import org.apache.poi.xslf.model.geom.IAdjustableShape;
import org.apache.poi.xslf.model.geom.Outline;
import org.apache.poi.xslf.model.geom.Path;
import org.apache.xmlbeans.XmlObject;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlip;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlipFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGeomGuide;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGradientFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGradientStop;
import org.openxmlformats.schemas.drawingml.x2006.main.CTLineProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNoFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPathShadeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTPresetGeometry2D;
import org.openxmlformats.schemas.drawingml.x2006.main.CTSchemeColor;
import org.openxmlformats.schemas.drawingml.x2006.main.CTShapeProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTShapeStyle;
import org.openxmlformats.schemas.drawingml.x2006.main.CTSolidColorFillProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTStyleMatrixReference;
import org.openxmlformats.schemas.drawingml.x2006.main.STPathShadeType;
/**
* Encapsulates logic to translate DrawingML objects to Java2D
*/
@Internal
class RenderableShape {
public final static Color NO_PAINT = new Color(0xFF, 0xFF, 0xFF, 0);
private XSLFSimpleShape _shape;
public RenderableShape(XSLFSimpleShape shape){
_shape = shape;
}
/**
* Convert shape fill into java.awt.Paint. The result is either Color or
* TexturePaint or GradientPaint or null
*
* @param graphics the target graphics
* @param obj the xml to read. Must contain elements from the EG_ColorChoice group:
*
* a:scrgbClr RGB Color Model - Percentage Variant
* a:srgbClr RGB Color Model - Hex Variant
* a:hslClr Hue, Saturation, Luminance Color Model
* a:sysClr System Color
* a:schemeClr Scheme Color
* a:prstClr Preset Color
*
*
* @param phClr context color
* @param parentPart the parent package part. Any external references (images, etc.) are resolved relative to it.
*
* @return the applied Paint or null if none was applied
*/
public Paint selectPaint(Graphics2D graphics, XmlObject obj, CTSchemeColor phClr, PackagePart parentPart) {
XSLFTheme theme = _shape.getSheet().getTheme();
Paint paint = null;
if (obj instanceof CTNoFillProperties) {
paint = NO_PAINT;
}
else if (obj instanceof CTSolidColorFillProperties) {
CTSolidColorFillProperties solidFill = (CTSolidColorFillProperties) obj;
XSLFColor c = new XSLFColor(solidFill, theme, phClr);
paint = c.getColor();
}
else if (obj instanceof CTBlipFillProperties) {
CTBlipFillProperties blipFill = (CTBlipFillProperties)obj;
paint = createTexturePaint(blipFill, graphics, parentPart);
}
else if (obj instanceof CTGradientFillProperties) {
Rectangle2D anchor = getAnchor(graphics);
CTGradientFillProperties gradFill = (CTGradientFillProperties) obj;
if (gradFill.isSetLin()) {
paint = createLinearGradientPaint(graphics, gradFill, anchor, theme, phClr);
} else if (gradFill.isSetPath()){
CTPathShadeProperties ps = gradFill.getPath();
if(ps.getPath() == STPathShadeType.CIRCLE){
paint = createRadialGradientPaint(gradFill, anchor, theme, phClr);
} else if (ps.getPath() == STPathShadeType.SHAPE){
paint = toRadialGradientPaint(gradFill, anchor, theme, phClr);
}
}
}
return paint;
}
private Paint createTexturePaint(CTBlipFillProperties blipFill, Graphics2D graphics,
PackagePart parentPart){
Paint paint = null;
CTBlip blip = blipFill.getBlip();
String blipId = blip.getEmbed();
PackageRelationship rel = parentPart.getRelationship(blipId);
if (rel != null) {
XSLFImageRenderer renderer = null;
if (graphics != null)
renderer = (XSLFImageRenderer) graphics.getRenderingHint(XSLFRenderingHint.IMAGE_RENDERER);
if (renderer == null) renderer = new XSLFImageRenderer();
try {
BufferedImage img = renderer.readImage(parentPart.getRelatedPart(rel));
if (blip.sizeOfAlphaModFixArray() > 0) {
float alpha = blip.getAlphaModFixArray(0).getAmt() / 100000.f;
AlphaComposite ac = AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, alpha);
if (graphics != null) graphics.setComposite(ac);
}
if(img != null) {
paint = new TexturePaint(
img, new Rectangle2D.Double(0, 0, img.getWidth(), img.getHeight()));
}
}
catch (Exception e) {
e.printStackTrace();
}
}
return paint;
}
@SuppressWarnings("unchecked")
private Paint createLinearGradientPaint(
Graphics2D graphics,
CTGradientFillProperties gradFill, Rectangle2D anchor,
XSLFTheme theme, CTSchemeColor phClr) {
double angle = gradFill.getLin().getAng() / 60000;
@SuppressWarnings("deprecation")
CTGradientStop[] gs = gradFill.getGsLst().getGsArray();
Arrays.sort(gs, new Comparator() {
public int compare(CTGradientStop o1, CTGradientStop o2) {
Integer pos1 = o1.getPos();
Integer pos2 = o2.getPos();
return pos1.compareTo(pos2);
}
});
Color[] colors = new Color[gs.length];
float[] fractions = new float[gs.length];
AffineTransform at = AffineTransform.getRotateInstance(
Math.toRadians(angle),
anchor.getX() + anchor.getWidth() / 2,
anchor.getY() + anchor.getHeight() / 2);
double diagonal = Math.sqrt(anchor.getHeight() * anchor.getHeight() + anchor.getWidth() * anchor.getWidth());
Point2D p1 = new Point2D.Double(anchor.getX() + anchor.getWidth() / 2 - diagonal / 2,
anchor.getY() + anchor.getHeight() / 2);
p1 = at.transform(p1, null);
Point2D p2 = new Point2D.Double(anchor.getX() + anchor.getWidth(), anchor.getY() + anchor.getHeight() / 2);
p2 = at.transform(p2, null);
snapToAnchor(p1, anchor);
snapToAnchor(p2, anchor);
for (int i = 0; i < gs.length; i++) {
CTGradientStop stop = gs[i];
colors[i] = new XSLFColor(stop, theme, phClr).getColor();
fractions[i] = stop.getPos() / 100000.f;
}
AffineTransform grAt = new AffineTransform();
if(gradFill.isSetRotWithShape() || !gradFill.getRotWithShape()) {
double rotation = _shape.getRotation();
if (rotation != 0.) {
double centerX = anchor.getX() + anchor.getWidth() / 2;
double centerY = anchor.getY() + anchor.getHeight() / 2;
grAt.translate(centerX, centerY);
grAt.rotate(Math.toRadians(-rotation));
grAt.translate(-centerX, -centerY);
}
}
// Trick to return GradientPaint on JDK 1.5 and LinearGradientPaint on JDK 1.6+
Paint paint;
try {
Class clz = Class.forName("java.awt.LinearGradientPaint");
@SuppressWarnings("rawtypes")
Class clzCycleMethod = Class.forName("java.awt.MultipleGradientPaint$CycleMethod");
@SuppressWarnings("rawtypes")
Class clzColorSpaceType = Class.forName("java.awt.MultipleGradientPaint$ColorSpaceType");
Constructor c =
clz.getConstructor(Point2D.class, Point2D.class, float[].class, Color[].class,
clzCycleMethod, clzColorSpaceType, AffineTransform.class);
paint = (Paint) c.newInstance(p1, p2, fractions, colors,
Enum.valueOf(clzCycleMethod, "NO_CYCLE"),
Enum.valueOf(clzColorSpaceType, "SRGB"), grAt);
} catch (ClassNotFoundException e) {
paint = new GradientPaint(p1, colors[0], p2, colors[colors.length - 1]);
} catch (Exception e) {
throw new RuntimeException(e);
}
return paint;
}
/**
* gradients with type=shape are enot supported by Java graphics.
* We approximate it with a radial gradient.
*/
private static Paint toRadialGradientPaint(
CTGradientFillProperties gradFill, Rectangle2D anchor,
XSLFTheme theme, CTSchemeColor phClr) {
@SuppressWarnings("deprecation")
CTGradientStop[] gs = gradFill.getGsLst().getGsArray();
Arrays.sort(gs, new Comparator() {
public int compare(CTGradientStop o1, CTGradientStop o2) {
Integer pos1 = o1.getPos();
Integer pos2 = o2.getPos();
return pos1.compareTo(pos2);
}
});
gs[1].setPos(50000);
CTGradientFillProperties g = CTGradientFillProperties.Factory.newInstance();
g.set(gradFill);
g.getGsLst().setGsArray(new CTGradientStop[]{gs[0], gs[1]});
return createRadialGradientPaint(g, anchor, theme, phClr);
}
private static Paint createRadialGradientPaint(
CTGradientFillProperties gradFill, Rectangle2D anchor,
XSLFTheme theme, CTSchemeColor phClr) {
@SuppressWarnings("deprecation")
CTGradientStop[] gs = gradFill.getGsLst().getGsArray();
Point2D pCenter = new Point2D.Double(anchor.getX() + anchor.getWidth()/2,
anchor.getY() + anchor.getHeight()/2);
float radius = (float)Math.max(anchor.getWidth(), anchor.getHeight());
Arrays.sort(gs, new Comparator() {
public int compare(CTGradientStop o1, CTGradientStop o2) {
Integer pos1 = o1.getPos();
Integer pos2 = o2.getPos();
return pos1.compareTo(pos2);
}
});
Color[] colors = new Color[gs.length];
float[] fractions = new float[gs.length];
for (int i = 0; i < gs.length; i++) {
CTGradientStop stop = gs[i];
colors[i] = new XSLFColor(stop, theme, phClr).getColor();
fractions[i] = stop.getPos() / 100000.f;
}
// Trick to return GradientPaint on JDK 1.5 and RadialGradientPaint on JDK 1.6+
Paint paint;
try {
Class clz = Class.forName("java.awt.RadialGradientPaint");
Constructor c =
clz.getConstructor(Point2D.class, float.class,
float[].class, Color[].class);
paint = (Paint) c.newInstance(pCenter, radius, fractions, colors);
} catch (ClassNotFoundException e) {
// the result on JDK 1.5 is incorrect, but it is better than nothing
paint = new GradientPaint(
new Point2D.Double(anchor.getX(), anchor.getY()),
colors[0], pCenter, colors[colors.length - 1]);
} catch (Exception e) {
throw new RuntimeException(e);
}
return paint;
}
private static void snapToAnchor(Point2D p, Rectangle2D anchor) {
if (p.getX() < anchor.getX()) {
p.setLocation(anchor.getX(), p.getY());
} else if (p.getX() > (anchor.getX() + anchor.getWidth())) {
p.setLocation(anchor.getX() + anchor.getWidth(), p.getY());
}
if (p.getY() < anchor.getY()) {
p.setLocation(p.getX(), anchor.getY());
} else if (p.getY() > (anchor.getY() + anchor.getHeight())) {
p.setLocation(p.getX(), anchor.getY() + anchor.getHeight());
}
}
Paint getPaint(Graphics2D graphics, XmlObject spPr, CTSchemeColor phClr) {
Paint paint = null;
for (XmlObject obj : spPr.selectPath("*")) {
paint = selectPaint(graphics, obj, phClr, _shape.getSheet().getPackagePart());
if(paint != null) break;
}
return paint == NO_PAINT ? null : paint;
}
/**
* fetch shape fill as a java.awt.Paint
*
* @return either Color or GradientPaint or TexturePaint or null
*/
Paint getFillPaint(final Graphics2D graphics) {
PropertyFetcher fetcher = new PropertyFetcher() {
public boolean fetch(XSLFSimpleShape shape) {
CTShapeProperties spPr = shape.getSpPr();
if (spPr.isSetNoFill()) {
setValue(RenderableShape.NO_PAINT); // use it as 'nofill' value
return true;
}
Paint paint = getPaint(graphics, spPr, null);
if (paint != null) {
setValue(paint);
return true;
}
return false;
}
};
_shape.fetchShapeProperty(fetcher);
Paint paint = fetcher.getValue();
if (paint == null) {
// fill color was not found, check if it is defined in the theme
CTShapeStyle style = _shape.getSpStyle();
if (style != null) {
// get a reference to a fill style within the style matrix.
CTStyleMatrixReference fillRef = style.getFillRef();
// The idx attribute refers to the index of a fill style or
// background fill style within the presentation's style matrix, defined by the fmtScheme element.
// value of 0 or 1000 indicates no background,
// values 1-999 refer to the index of a fill style within the fillStyleLst element
// values 1001 and above refer to the index of a background fill style within the bgFillStyleLst element.
int idx = (int)fillRef.getIdx();
CTSchemeColor phClr = fillRef.getSchemeClr();
XSLFSheet sheet = _shape.getSheet();
XSLFTheme theme = sheet.getTheme();
XmlObject fillProps = null;
if(idx >= 1 && idx <= 999){
fillProps = theme.getXmlObject().
getThemeElements().getFmtScheme().getFillStyleLst().selectPath("*")[idx - 1];
} else if (idx >= 1001 ){
fillProps = theme.getXmlObject().
getThemeElements().getFmtScheme().getBgFillStyleLst().selectPath("*")[idx - 1001];
}
if(fillProps != null) {
paint = selectPaint(graphics, fillProps, phClr, sheet.getPackagePart());
}
}
}
return paint == RenderableShape.NO_PAINT ? null : paint;
}
public Paint getLinePaint(final Graphics2D graphics) {
PropertyFetcher fetcher = new PropertyFetcher() {
public boolean fetch(XSLFSimpleShape shape) {
CTLineProperties spPr = shape.getSpPr().getLn();
if (spPr != null) {
if (spPr.isSetNoFill()) {
setValue(NO_PAINT); // use it as 'nofill' value
return true;
}
Paint paint = getPaint(graphics, spPr, null);
if (paint != null) {
setValue(paint);
return true;
}
}
return false;
}
};
_shape.fetchShapeProperty(fetcher);
Paint paint = fetcher.getValue();
if (paint == null) {
// line color was not found, check if it is defined in the theme
CTShapeStyle style = _shape.getSpStyle();
if (style != null) {
// get a reference to a line style within the style matrix.
CTStyleMatrixReference lnRef = style.getLnRef();
int idx = (int)lnRef.getIdx();
CTSchemeColor phClr = lnRef.getSchemeClr();
if(idx > 0){
XSLFTheme theme = _shape.getSheet().getTheme();
XmlObject lnProps = theme.getXmlObject().
getThemeElements().getFmtScheme().getLnStyleLst().selectPath("*")[idx - 1];
paint = getPaint(graphics, lnProps, phClr);
}
}
}
return paint == NO_PAINT ? null : paint;
}
/**
* convert PPT dash into java.awt.BasicStroke
*
* The mapping is derived empirically on PowerPoint 2010
*/
private static float[] getDashPattern(LineDash lineDash, float lineWidth) {
float[] dash = null;
switch (lineDash) {
case SYS_DOT:
dash = new float[]{lineWidth, lineWidth};
break;
case SYS_DASH:
dash = new float[]{2 * lineWidth, 2 * lineWidth};
break;
case DASH:
dash = new float[]{3 * lineWidth, 4 * lineWidth};
break;
case DASH_DOT:
dash = new float[]{4 * lineWidth, 3 * lineWidth, lineWidth,
3 * lineWidth};
break;
case LG_DASH:
dash = new float[]{8 * lineWidth, 3 * lineWidth};
break;
case LG_DASH_DOT:
dash = new float[]{8 * lineWidth, 3 * lineWidth, lineWidth,
3 * lineWidth};
break;
case LG_DASH_DOT_DOT:
dash = new float[]{8 * lineWidth, 3 * lineWidth, lineWidth,
3 * lineWidth, lineWidth, 3 * lineWidth};
break;
}
return dash;
}
public Stroke applyStroke(Graphics2D graphics) {
float lineWidth = (float) _shape.getLineWidth();
if(lineWidth == 0.0f) lineWidth = 0.25f; // Both PowerPoint and OOo draw zero-length lines as 0.25pt
LineDash lineDash = _shape.getLineDash();
float[] dash = null;
float dash_phase = 0;
if (lineDash != null) {
dash = getDashPattern(lineDash, lineWidth);
}
int cap = BasicStroke.CAP_BUTT;
LineCap lineCap = _shape.getLineCap();
if (lineCap != null) {
switch (lineCap) {
case ROUND:
cap = BasicStroke.CAP_ROUND;
break;
case SQUARE:
cap = BasicStroke.CAP_SQUARE;
break;
default:
cap = BasicStroke.CAP_BUTT;
break;
}
}
int meter = BasicStroke.JOIN_ROUND;
Stroke stroke = new BasicStroke(lineWidth, cap, meter, Math.max(1, lineWidth), dash,
dash_phase);
graphics.setStroke(stroke);
return stroke;
}
public void render(Graphics2D graphics){
Collection elems = computeOutlines(graphics);
// shadow
XSLFShadow shadow = _shape.getShadow();
// first fill
Paint fill = getFillPaint(graphics);
Paint line = getLinePaint(graphics);
applyStroke(graphics); // the stroke applies both to the shadow and the shape
// first paint the shadow
if(shadow != null) for(Outline o : elems){
if(o.getPath().isFilled()){
if(fill != null) shadow.fill(graphics, o.getOutline());
else if(line != null) shadow.draw(graphics, o.getOutline());
}
}
// then fill the shape interior
if(fill != null) for(Outline o : elems){
if(o.getPath().isFilled()){
graphics.setPaint(fill);
graphics.fill(o.getOutline());
}
}
// then draw any content within this shape (text, image, etc.)
_shape.drawContent(graphics);
// then stroke the shape outline
if(line != null) for(Outline o : elems){
if(o.getPath().isStroked()){
graphics.setPaint(line);
graphics.draw(o.getOutline());
}
}
}
@SuppressWarnings("deprecation")
private Collection computeOutlines(Graphics2D graphics) {
Collection lst = new ArrayList();
CustomGeometry geom = _shape.getGeometry();
if(geom == null) {
return lst;
}
Rectangle2D anchor = getAnchor(graphics);
for (Path p : geom) {
double w = p.getW() == -1 ? anchor.getWidth() * Units.EMU_PER_POINT : p.getW();
double h = p.getH() == -1 ? anchor.getHeight() * Units.EMU_PER_POINT : p.getH();
// the guides in the shape definitions are all defined relative to each other,
// so we build the path starting from (0,0).
final Rectangle2D pathAnchor = new Rectangle2D.Double(
0,
0,
w,
h
);
Context ctx = new Context(geom, pathAnchor, new IAdjustableShape() {
public Guide getAdjustValue(String name) {
CTPresetGeometry2D prst = _shape.getSpPr().getPrstGeom();
if (prst != null && prst.isSetAvLst()) {
for (CTGeomGuide g : prst.getAvLst().getGdArray()) {
if (g.getName().equals(name)) {
return new Guide(g);
}
}
}
return null;
}
}) ;
Shape gp = p.getPath(ctx);
// translate the result to the canvas coordinates in points
AffineTransform at = new AffineTransform();
at.translate(anchor.getX(), anchor.getY());
double scaleX, scaleY;
if (p.getW() != -1) {
scaleX = anchor.getWidth() / p.getW();
} else {
scaleX = 1.0 / Units.EMU_PER_POINT;
}
if (p.getH() != -1) {
scaleY = anchor.getHeight() / p.getH();
} else {
scaleY = 1.0 / Units.EMU_PER_POINT;
}
at.scale(scaleX, scaleY);
Shape canvasShape = at.createTransformedShape(gp);
lst.add(new Outline(canvasShape, p));
}
return lst;
}
public Rectangle2D getAnchor(Graphics2D graphics) {
Rectangle2D anchor = _shape.getAnchor();
if(graphics == null) {
return anchor;
}
AffineTransform tx = (AffineTransform)graphics.getRenderingHint(XSLFRenderingHint.GROUP_TRANSFORM);
if(tx != null) {
anchor = tx.createTransformedShape(anchor).getBounds2D();
}
return anchor;
}
}
