/*
* SVG Salamander
* Copyright (c) 2004, Mark McKay
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on February 18, 2004, 5:33 PM
*/
package com.kitfox.svg;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.NoninvertibleTransformException;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.util.List;
import com.kitfox.svg.xml.NumberWithUnits;
import com.kitfox.svg.xml.StyleAttribute;
import com.kitfox.svg.xml.StyleSheet;
/**
* The root element of an SVG tree.
*
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class SVGRoot extends Group {
public static final String TAG_NAME = "svg";
NumberWithUnits x;
NumberWithUnits y;
NumberWithUnits width;
NumberWithUnits height;
Rectangle2D.Float viewBox = null;
public static final int PA_X_NONE = 0;
public static final int PA_X_MIN = 1;
public static final int PA_X_MID = 2;
public static final int PA_X_MAX = 3;
public static final int PA_Y_NONE = 0;
public static final int PA_Y_MIN = 1;
public static final int PA_Y_MID = 2;
public static final int PA_Y_MAX = 3;
public static final int PS_MEET = 0;
public static final int PS_SLICE = 1;
int parSpecifier = PS_MEET;
int parAlignX = PA_X_MID;
int parAlignY = PA_Y_MID;
final AffineTransform viewXform = new AffineTransform();
final Rectangle2D.Float clipRect = new Rectangle2D.Float();
private StyleSheet styleSheet;
/** Creates a new instance of SVGRoot */
public SVGRoot() {
}
@Override
public String getTagName() {
return TAG_NAME;
}
@Override
public void build() throws SVGException {
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("x"))) {
x = sty.getNumberWithUnits();
}
if (getPres(sty.setName("y"))) {
y = sty.getNumberWithUnits();
}
if (getPres(sty.setName("width"))) {
width = sty.getNumberWithUnits();
}
if (getPres(sty.setName("height"))) {
height = sty.getNumberWithUnits();
}
if (getPres(sty.setName("viewBox"))) {
float[] coords = sty.getFloatList();
viewBox = new Rectangle2D.Float(coords[0], coords[1], coords[2],
coords[3]);
}
if (getPres(sty.setName("preserveAspectRatio"))) {
String preserve = sty.getStringValue();
if (contains(preserve, "none")) {
parAlignX = PA_X_NONE;
parAlignY = PA_Y_NONE;
} else if (contains(preserve, "xMinYMin")) {
parAlignX = PA_X_MIN;
parAlignY = PA_Y_MIN;
} else if (contains(preserve, "xMidYMin")) {
parAlignX = PA_X_MID;
parAlignY = PA_Y_MIN;
} else if (contains(preserve, "xMaxYMin")) {
parAlignX = PA_X_MAX;
parAlignY = PA_Y_MIN;
} else if (contains(preserve, "xMinYMid")) {
parAlignX = PA_X_MIN;
parAlignY = PA_Y_MID;
} else if (contains(preserve, "xMidYMid")) {
parAlignX = PA_X_MID;
parAlignY = PA_Y_MID;
} else if (contains(preserve, "xMaxYMid")) {
parAlignX = PA_X_MAX;
parAlignY = PA_Y_MID;
} else if (contains(preserve, "xMinYMax")) {
parAlignX = PA_X_MIN;
parAlignY = PA_Y_MAX;
} else if (contains(preserve, "xMidYMax")) {
parAlignX = PA_X_MID;
parAlignY = PA_Y_MAX;
} else if (contains(preserve, "xMaxYMax")) {
parAlignX = PA_X_MAX;
parAlignY = PA_Y_MAX;
}
if (contains(preserve, "meet")) {
parSpecifier = PS_MEET;
} else if (contains(preserve, "slice")) {
parSpecifier = PS_SLICE;
}
}
prepareViewport();
}
private static boolean contains(String text, String find) {
return (text.indexOf(find) != -1);
}
@Override
public SVGRoot getRoot() {
return this;
}
protected void prepareViewport() {
Rectangle deviceViewport = diagram.getDeviceViewport();
Rectangle2D defaultBounds;
try {
defaultBounds = getBoundingBox();
} catch (SVGException ex) {
defaultBounds = new Rectangle2D.Float();
}
// Determine destination rectangle
float xx, yy, ww, hh;
if (width != null) {
xx = (x == null) ? 0
: StyleAttribute.convertUnitsToPixels(x.getUnits(),
x.getValue());
if (width.getUnits() == NumberWithUnits.UT_PERCENT) {
ww = width.getValue() * deviceViewport.width;
} else {
ww = StyleAttribute.convertUnitsToPixels(width.getUnits(),
width.getValue());
}
} else if (viewBox != null) {
xx = viewBox.x;
ww = viewBox.width;
width = new NumberWithUnits(ww, NumberWithUnits.UT_PX);
x = new NumberWithUnits(xx, NumberWithUnits.UT_PX);
} else {
// Estimate size from scene bounding box
xx = (float) defaultBounds.getX();
ww = (float) defaultBounds.getWidth();
width = new NumberWithUnits(ww, NumberWithUnits.UT_PX);
x = new NumberWithUnits(xx, NumberWithUnits.UT_PX);
}
if (height != null) {
yy = (y == null) ? 0
: StyleAttribute.convertUnitsToPixels(y.getUnits(),
y.getValue());
if (height.getUnits() == NumberWithUnits.UT_PERCENT) {
hh = height.getValue() * deviceViewport.height;
} else {
hh = StyleAttribute.convertUnitsToPixels(height.getUnits(),
height.getValue());
}
} else if (viewBox != null) {
yy = viewBox.y;
hh = viewBox.height;
height = new NumberWithUnits(hh, NumberWithUnits.UT_PX);
y = new NumberWithUnits(yy, NumberWithUnits.UT_PX);
} else {
// Estimate size from scene bounding box
yy = (float) defaultBounds.getY();
hh = (float) defaultBounds.getHeight();
height = new NumberWithUnits(hh, NumberWithUnits.UT_PX);
y = new NumberWithUnits(yy, NumberWithUnits.UT_PX);
}
clipRect.setRect(xx, yy, ww, hh);
// if (viewBox == null)
// {
// viewXform.setToIdentity();
// }
// else
// {
// //If viewport window is set, we are drawing to entire viewport
// clipRect.setRect(deviceViewport);
//
// viewXform.setToIdentity();
// viewXform.setToTranslation(deviceViewport.x, deviceViewport.y);
// viewXform.scale(deviceViewport.width, deviceViewport.height);
// viewXform.scale(1 / viewBox.width, 1 / viewBox.height);
// viewXform.translate(-viewBox.x, -viewBox.y);
// }
}
public void renderToViewport(Graphics2D g) throws SVGException {
prepareViewport();
if (viewBox == null) {
viewXform.setToIdentity();
} else {
Rectangle deviceViewport = g.getClipBounds();
// If viewport window is set, we are drawing to entire viewport
clipRect.setRect(deviceViewport);
viewXform.setToIdentity();
viewXform.setToTranslation(deviceViewport.x, deviceViewport.y);
viewXform.scale(deviceViewport.width, deviceViewport.height);
viewXform.scale(1 / viewBox.width, 1 / viewBox.height);
viewXform.translate(-viewBox.x, -viewBox.y);
}
AffineTransform cachedXform = g.getTransform();
g.transform(viewXform);
super.render(g);
g.setTransform(cachedXform);
}
@Override
public void pick(Rectangle2D pickArea, AffineTransform ltw,
boolean boundingBox, List retVec) throws SVGException {
if (viewXform != null) {
ltw = new AffineTransform(ltw);
ltw.concatenate(viewXform);
}
super.pick(pickArea, ltw, boundingBox, retVec);
}
@Override
public void pick(Point2D point, boolean boundingBox, List retVec)
throws SVGException {
Point2D xPoint = new Point2D.Double(point.getX(), point.getY());
if (viewXform != null) {
try {
viewXform.inverseTransform(point, xPoint);
} catch (NoninvertibleTransformException ex) {
throw new SVGException(ex);
}
}
super.pick(xPoint, boundingBox, retVec);
}
@Override
public Shape getShape() {
Shape shape = super.getShape();
return viewXform.createTransformedShape(shape);
}
@Override
public Rectangle2D getBoundingBox() throws SVGException {
Rectangle2D bbox = super.getBoundingBox();
return viewXform.createTransformedShape(bbox).getBounds2D();
}
public float getDeviceWidth() {
return clipRect.width;
}
public float getDeviceHeight() {
return clipRect.height;
}
public Rectangle2D getDeviceRect(Rectangle2D rect) {
rect.setRect(clipRect);
return rect;
}
/**
* Updates all attributes in this diagram associated with a time event. Ie,
* all attributes with track information.
*
* @return - true if this node has changed state as a result of the time
* update
*/
@Override
public boolean updateTime(double curTime) throws SVGException {
boolean changeState = super.updateTime(curTime);
StyleAttribute sty = new StyleAttribute();
boolean shapeChange = false;
if (getPres(sty.setName("x"))) {
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(x)) {
x = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("y"))) {
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(y)) {
y = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("width"))) {
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(width)) {
width = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("height"))) {
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(height)) {
height = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("viewBox"))) {
float[] coords = sty.getFloatList();
Rectangle2D.Float newViewBox = new Rectangle2D.Float(coords[0],
coords[1], coords[2], coords[3]);
if (!newViewBox.equals(viewBox)) {
viewBox = newViewBox;
shapeChange = true;
}
}
if (shapeChange) {
build();
}
return changeState || shapeChange;
}
/**
* @return the styleSheet
*/
public StyleSheet getStyleSheet() {
if (styleSheet == null) {
for (int i = 0; i < getNumChildren(); ++i) {
SVGElement ele = getChild(i);
if (ele instanceof Style) {
return ((Style) ele).getStyleSheet();
}
}
}
return styleSheet;
}
/**
* @param styleSheet
* the styleSheet to set
*/
public void setStyleSheet(StyleSheet styleSheet) {
this.styleSheet = styleSheet;
}
}