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/*
* Copyright 1999-2005 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.layoutmgr.inline;
import java.awt.geom.Rectangle2D;
import org.apache.fop.area.Area;
import org.apache.fop.area.inline.Image;
import org.apache.fop.fo.flow.ExternalGraphic;
/**
* LayoutManager for the fo:external-graphic formatting object
*/
public class ExternalGraphicLayoutManager extends AbstractGraphicsLayoutManager {
private ExternalGraphic fobj;
/**
* Constructor
*
* @param node the fo:external-graphic formatting object that creates the area
*/
public ExternalGraphicLayoutManager(ExternalGraphic node) {
super(node);
fobj = node;
}
/**
* Setup this image.
* This gets the sizes for the image and the dimensions and clipping.
* @todo see if can simplify property handling logic
*/
/*
private void setup() {
// assume lr-tb for now and just use the .optimum value of the range
Length ipd = fobj.getInlineProgressionDimension().getOptimum(this).getLength();
if (ipd.getEnum() != EN_AUTO) {
viewWidth = ipd.getValue(this);
} else {
ipd = fobj.getWidth();
if (ipd.getEnum() != EN_AUTO) {
viewWidth = ipd.getValue(this);
}
}
Length bpd = fobj.getBlockProgressionDimension().getOptimum(this).getLength();
if (bpd.getEnum() != EN_AUTO) {
viewHeight = bpd.getValue(this);
} else {
bpd = fobj.getHeight();
if (bpd.getEnum() != EN_AUTO) {
viewHeight = bpd.getValue(this);
}
}
int cwidth = -1;
int cheight = -1;
Length ch = fobj.getContentHeight();
if (ch.getEnum() != EN_AUTO) {
if (ch.getEnum() == EN_SCALE_TO_FIT) {
if (viewHeight != -1) {
cheight = viewHeight;
}
} else {
cheight = ch.getValue(this);
}
}
Length cw = fobj.getContentWidth();
if (cw.getEnum() != EN_AUTO) {
if (cw.getEnum() == EN_SCALE_TO_FIT) {
if (viewWidth != -1) {
cwidth = viewWidth;
}
} else {
cwidth = cw.getValue(this);
}
}
int scaling = fobj.getScaling();
if ((scaling == EN_UNIFORM) || (cwidth == -1) || cheight == -1) {
if (cwidth == -1 && cheight == -1) {
cwidth = fobj.getIntrinsicWidth();
cheight = fobj.getIntrinsicHeight();
} else if (cwidth == -1) {
cwidth = (int)(fobj.getIntrinsicWidth() * (double)cheight
/ fobj.getIntrinsicHeight());
} else if (cheight == -1) {
cheight = (int)(fobj.getIntrinsicHeight() * (double)cwidth
/ fobj.getIntrinsicWidth());
} else {
// adjust the larger
double rat1 = (double)cwidth / fobj.getIntrinsicWidth();
double rat2 = (double)cheight / fobj.getIntrinsicHeight();
if (rat1 < rat2) {
// reduce cheight
cheight = (int)(rat1 * fobj.getIntrinsicHeight());
} else if (rat1 > rat2) {
cwidth = (int)(rat2 * fobj.getIntrinsicWidth());
}
}
}
if (viewWidth == -1) {
viewWidth = cwidth;
}
if (viewHeight == -1) {
viewHeight = cheight;
}
if (cwidth > viewWidth || cheight > viewHeight) {
int overflow = fobj.getOverflow();
if (overflow == EN_HIDDEN) {
clip = true;
} else if (overflow == EN_ERROR_IF_OVERFLOW) {
fobj.getLogger().error("Image: " + fobj.getURL()
+ " overflows the viewport, clipping to viewport");
clip = true;
}
}
int xoffset = 0;
int yoffset = 0;
switch(fobj.getDisplayAlign()) {
case EN_BEFORE:
break;
case EN_AFTER:
yoffset = viewHeight - cheight;
break;
case EN_CENTER:
yoffset = (viewHeight - cheight) / 2;
break;
case EN_AUTO:
default:
break;
}
switch(fobj.getTextAlign()) {
case EN_CENTER:
xoffset = (viewWidth - cwidth) / 2;
break;
case EN_END:
xoffset = viewWidth - cwidth;
break;
case EN_START:
break;
case EN_JUSTIFY:
default:
break;
}
CommonBorderPaddingBackground borderProps = fobj.getCommonBorderPaddingBackground();
//Determine extra BPD from borders etc.
int beforeBPD = borderProps.getPadding(CommonBorderPaddingBackground.BEFORE, false, this);
beforeBPD += borderProps.getBorderWidth(CommonBorderPaddingBackground.BEFORE,
false);
int afterBPD = borderProps.getPadding(CommonBorderPaddingBackground.AFTER, false, this);
afterBPD += borderProps.getBorderWidth(CommonBorderPaddingBackground.AFTER, false);
yoffset += beforeBPD;
viewBPD = viewHeight;
viewHeight += beforeBPD;
viewHeight += afterBPD;
//Determine extra IPD from borders etc.
int startIPD = borderProps.getPadding(CommonBorderPaddingBackground.START,
false, this);
startIPD += borderProps.getBorderWidth(CommonBorderPaddingBackground.START,
false);
int endIPD = borderProps.getPadding(CommonBorderPaddingBackground.END, false, this);
endIPD += borderProps.getBorderWidth(CommonBorderPaddingBackground.END, false);
xoffset += startIPD;
viewIPD = viewWidth;
viewWidth += startIPD;
viewWidth += endIPD;
placement = new Rectangle2D.Float(xoffset, yoffset, cwidth, cheight);
}
*/
/**
* Get the inline area created by this element.
*
* @return the inline area
*/
protected Area getChildArea() {
return new Image(fobj.getSrc());
}
}
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