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/*
* $Id$
* Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.render;
// FOP
import org.apache.fop.pdf.PDFPathPaint;
import org.apache.fop.pdf.PDFColor;
import org.apache.fop.image.ImageArea;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.properties.*;
import org.apache.fop.layout.*;
import org.apache.fop.layout.inline.*;
import org.apache.fop.datatypes.*;
import org.apache.fop.render.pdf.FontSetup;
import org.apache.log.Logger;
// Java
import java.io.IOException;
import java.io.OutputStream;
import java.util.Enumeration;
/**
* Abstract base class for all renderers.
*
*/
public abstract class AbstractRenderer implements Renderer {
protected Logger log;
/**
* the current vertical position in millipoints from bottom
*/
protected int currentYPosition = 0;
/**
* the current horizontal position in millipoints from left
*/
protected int currentXPosition = 0;
/**
* the horizontal position of the current area container
*/
protected int currentAreaContainerXPosition = 0;
public void setLogger(Logger logger) {
log = logger;
}
public void renderSpanArea(SpanArea area) {
Enumeration e = area.getChildren().elements();
while (e.hasMoreElements()) {
org.apache.fop.layout.Box b =
(org.apache.fop.layout.Box)e.nextElement();
b.render(this); // column areas
}
}
protected abstract void doFrame(Area area);
/**
* render area container
*
* @param area the area container to render
*/
public void renderAreaContainer(AreaContainer area) {
int saveY = this.currentYPosition;
int saveX = this.currentAreaContainerXPosition;
if (area.getPosition() == Position.ABSOLUTE) {
// XPosition and YPosition give the content rectangle position
this.currentYPosition = area.getYPosition();
this.currentAreaContainerXPosition = area.getXPosition();
} else if (area.getPosition() == Position.RELATIVE) {
this.currentYPosition -= area.getYPosition();
this.currentAreaContainerXPosition += area.getXPosition();
} else if (area.getPosition() == Position.STATIC) {
this.currentYPosition -= area.getPaddingTop()
+ area.getBorderTopWidth();
/*
* this.currentAreaContainerXPosition +=
* area.getPaddingLeft() + area.getBorderLeftWidth();
*/
}
this.currentXPosition = this.currentAreaContainerXPosition;
doFrame(area);
Enumeration e = area.getChildren().elements();
while (e.hasMoreElements()) {
Box b = (Box)e.nextElement();
b.render(this);
}
// Restore previous origin
this.currentYPosition = saveY;
this.currentAreaContainerXPosition = saveX;
if (area.getPosition() == Position.STATIC) {
this.currentYPosition -= area.getHeight();
}
/**
* **
* if (area.getPosition() != Position.STATIC) {
* this.currentYPosition = saveY;
* this.currentAreaContainerXPosition = saveX;
* } else
* this.currentYPosition -= area.getHeight();
* **
*/
}
/**
* render block area
*
* @param area the block area to render
*/
public void renderBlockArea(BlockArea area) {
// KLease: Temporary test to fix block positioning
// Offset ypos by padding and border widths
this.currentYPosition -= (area.getPaddingTop()
+ area.getBorderTopWidth());
doFrame(area);
Enumeration e = area.getChildren().elements();
while (e.hasMoreElements()) {
Box b = (Box)e.nextElement();
b.render(this);
}
this.currentYPosition -= (area.getPaddingBottom()
+ area.getBorderBottomWidth());
}
/**
* render line area
*
* @param area area to render
*/
public void renderLineArea(LineArea area) {
int rx = this.currentAreaContainerXPosition + area.getStartIndent();
int ry = this.currentYPosition;
int w = area.getContentWidth();
int h = area.getHeight();
this.currentYPosition -= area.getPlacementOffset();
this.currentXPosition = rx;
int bl = this.currentYPosition;
Enumeration e = area.getChildren().elements();
while (e.hasMoreElements()) {
Box b = (Box)e.nextElement();
if (b instanceof InlineArea) {
InlineArea ia = (InlineArea)b;
this.currentYPosition = ry - ia.getYOffset();
} else {
this.currentYPosition = ry - area.getPlacementOffset();
}
b.render(this);
}
this.currentYPosition = ry - h;
this.currentXPosition = rx;
}
}
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