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Library for creating nicely layouted PDF documents based on PDFBox
/*
* Copyright (C) 2014-2024 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* 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.
*/
/**
# * Copyright (C) 2014-2016 Philip Helger (www.helger.com)
* philip[at]helger[dot]com
*
* 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.
*/
package com.helger.pdflayout.element.vbox;
import java.io.IOException;
import java.util.function.Consumer;
import java.util.function.ObjIntConsumer;
import javax.annotation.CheckForSigned;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.OverridingMethodsMustInvokeSuper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.helger.commons.ValueEnforcer;
import com.helger.commons.annotation.ReturnsMutableCopy;
import com.helger.commons.collection.ArrayHelper;
import com.helger.commons.collection.impl.CommonsArrayList;
import com.helger.commons.collection.impl.ICommonsList;
import com.helger.commons.state.EChange;
import com.helger.commons.string.ToStringGenerator;
import com.helger.pdflayout.base.AbstractPLElement;
import com.helger.pdflayout.base.AbstractPLRenderableObject;
import com.helger.pdflayout.base.IPLRenderableObject;
import com.helger.pdflayout.base.IPLSplittableObject;
import com.helger.pdflayout.base.IPLVisitor;
import com.helger.pdflayout.base.PLElementWithSize;
import com.helger.pdflayout.base.PLSplitResult;
import com.helger.pdflayout.debug.PLDebugLog;
import com.helger.pdflayout.render.PageRenderContext;
import com.helger.pdflayout.render.PreparationContext;
import com.helger.pdflayout.spec.HeightSpec;
import com.helger.pdflayout.spec.SizeSpec;
/**
* Vertical box - groups several rows.
*
* @author Philip Helger
* @param
* Implementation type
*/
public abstract class AbstractPLVBox > extends
AbstractPLRenderableObject implements
IPLSplittableObject
{
public static final boolean DEFAULT_FULL_WIDTH = true;
private static final Logger LOGGER = LoggerFactory.getLogger (AbstractPLVBox.class);
// All the rows of this VBox
private final ICommonsList m_aRows = new CommonsArrayList <> ();
// Vertical splittable?
private boolean m_bVertSplittable = DEFAULT_VERT_SPLITTABLE;
// Header rows to be repeated after a split
private int m_nHeaderRowCount = 0;
// Always use the full width?
private boolean m_bFullWidth = DEFAULT_FULL_WIDTH;
// Status vars
/** prepared row size (with outline of contained element) */
private SizeSpec [] m_aPreparedRowSize;
/** prepared element size (without outline) */
private SizeSpec [] m_aPreparedElementSize;
public AbstractPLVBox ()
{}
@Override
@Nonnull
@OverridingMethodsMustInvokeSuper
public IMPLTYPE setBasicDataFrom (@Nonnull final IMPLTYPE aSource)
{
super.setBasicDataFrom (aSource);
setVertSplittable (aSource.isVertSplittable ());
setHeaderRowCount (aSource.getHeaderRowCount ());
setFullWidth (aSource.isFullWidth ());
return thisAsT ();
}
/**
* @return The number of rows. Always ≥ 0.
*/
@Nonnegative
public int getRowCount ()
{
return m_aRows.size ();
}
/**
* @return All rows. Never null.
*/
@Nonnull
@ReturnsMutableCopy
public ICommonsList getAllRows ()
{
return m_aRows.getClone ();
}
/**
* @return All rows. Never null.
*/
@Nonnull
public Iterable getRows ()
{
return m_aRows;
}
public void forEachRow (@Nonnull final Consumer aConsumer)
{
m_aRows.forEach (aConsumer);
}
public void forEachRowByIndex (@Nonnull final ObjIntConsumer aConsumer)
{
m_aRows.forEachByIndex (aConsumer);
}
/**
* Get the row at the specified index.
*
* @param nIndex
* The index to use. Should be ≥ 0.
* @return null if an invalid index was provided.
*/
@Nullable
public PLVBoxRow getRowAtIndex (@Nonnegative final int nIndex)
{
return m_aRows.getAtIndex (nIndex);
}
/**
* @return The first row or null if no row is present.
*/
@Nullable
public PLVBoxRow getFirstRow ()
{
return m_aRows.getFirstOrNull ();
}
/**
* @return The last row or null if no row is present.
*/
@Nullable
public PLVBoxRow getLastRow ()
{
return m_aRows.getLastOrNull ();
}
/**
* Get the element in the row at the specified index.
*
* @param nIndex
* The index to use. Should be ≥ 0.
* @return null if an invalid index was provided.
*/
@Nullable
public IPLRenderableObject getRowElementAtIndex (@Nonnegative final int nIndex)
{
final PLVBoxRow aRow = getRowAtIndex (nIndex);
return aRow == null ? null : aRow.getElement ();
}
/**
* @return The element in the first row or null if no row is
* present.
*/
@Nullable
public IPLRenderableObject getFirstRowElement ()
{
final PLVBoxRow aRow = getFirstRow ();
return aRow == null ? null : aRow.getElement ();
}
/**
* @return The element in the last row or null if no row is
* present.
*/
@Nullable
public IPLRenderableObject getLastRowElement ()
{
final PLVBoxRow aRow = getLastRow ();
return aRow == null ? null : aRow.getElement ();
}
/**
* @return The default height to be used for rows if none is provided. May not
* be null.
*/
@Nonnull
public HeightSpec getDefaultHeight ()
{
return HeightSpec.auto ();
}
@Nonnull
private PLVBoxRow _addAndReturnRow (@CheckForSigned final int nIndex,
@Nonnull final IPLRenderableObject aElement,
@Nonnull final HeightSpec aHeight)
{
final PLVBoxRow aItem = new PLVBoxRow (aElement, aHeight);
if (nIndex < 0 || nIndex >= m_aRows.size ())
m_aRows.add (aItem);
else
m_aRows.add (nIndex, aItem);
return aItem;
}
/**
* Add a row to this VBox using auto height.
*
* @param aElement
* The row to be added. May not be null.
* @return the created row
*/
@Nonnull
public PLVBoxRow addAndReturnRow (@Nonnull final IPLRenderableObject aElement)
{
return addAndReturnRow (aElement, getDefaultHeight ());
}
/**
* Add a row to this VBox.
*
* @param aElement
* The row to be added. May not be null.
* @param aHeight
* The height specification to use. May not be null.
* @return the created row
*/
@Nonnull
public final PLVBoxRow addAndReturnRow (@Nonnull final IPLRenderableObject aElement,
@Nonnull final HeightSpec aHeight)
{
internalCheckNotPrepared ();
return _addAndReturnRow (-1, aElement, aHeight);
}
/**
* Add a row to this VBox using auto height.
*
* @param aElement
* The row to be added. May not be null.
* @return this
*/
@Nonnull
public IMPLTYPE addRow (@Nonnull final IPLRenderableObject aElement)
{
return addRow (aElement, getDefaultHeight ());
}
/**
* Add a row to this VBox.
*
* @param aElement
* The row to be added. May not be null.
* @param aHeight
* The height specification to use. May not be null.
* @return this for chaining
*/
@Nonnull
public final IMPLTYPE addRow (@Nonnull final IPLRenderableObject aElement, @Nonnull final HeightSpec aHeight)
{
addAndReturnRow (aElement, aHeight);
return thisAsT ();
}
/**
* Add a row to this VBox.
*
* @param nIndex
* The index where the row should be added. Must be ≥ 0.
* @param aElement
* The row to be added. May not be null.
* @param aHeight
* The height specification to use. May not be null.
* @return the created row. Never null.
*/
@Nonnull
public PLVBoxRow addAndReturnRow (@Nonnegative final int nIndex,
@Nonnull final IPLRenderableObject aElement,
@Nonnull final HeightSpec aHeight)
{
ValueEnforcer.isGE0 (nIndex, "Index");
internalCheckNotPrepared ();
return _addAndReturnRow (nIndex, aElement, aHeight);
}
/**
* Add a row to this VBox.
*
* @param nIndex
* The index where the row should be added. Must be ≥ 0.
* @param aElement
* The row to be added. May not be null.
* @param aHeight
* The height specification to use. May not be null.
* @return this for chaining
*/
@Nonnull
public IMPLTYPE addRow (@Nonnegative final int nIndex,
@Nonnull final IPLRenderableObject aElement,
@Nonnull final HeightSpec aHeight)
{
addAndReturnRow (nIndex, aElement, aHeight);
return thisAsT ();
}
/**
* Remove the row with the specified index.
*
* @param nIndex
* The index to be removed.
* @return this for chaining
*/
@Nonnull
public IMPLTYPE removeRow (@Nonnegative final int nIndex)
{
ValueEnforcer.isGE0 (nIndex, "Index");
internalCheckNotPrepared ();
m_aRows.remove (nIndex);
return thisAsT ();
}
public final boolean isVertSplittable ()
{
return m_bVertSplittable;
}
@Nonnull
public final IMPLTYPE setVertSplittable (final boolean bVertSplittable)
{
m_bVertSplittable = bVertSplittable;
return thisAsT ();
}
/**
* @return The number of header rows. By default 0. Always ≥ 0.
*/
@Nonnegative
public final int getHeaderRowCount ()
{
return m_nHeaderRowCount;
}
/**
* Set the number of header rows in this table. Header rows get repeated on
* every page upon rendering.
*
* @param nHeaderRowCount
* The number of header rows, to be repeated by page. Must be ≥ 0.
* @return this
*/
@Nonnull
public final IMPLTYPE setHeaderRowCount (@Nonnegative final int nHeaderRowCount)
{
ValueEnforcer.isGE0 (nHeaderRowCount, "HeaderRowCount");
m_nHeaderRowCount = nHeaderRowCount;
return thisAsT ();
}
public boolean containsAnyVertSplittableElement ()
{
return m_aRows.containsAny (x -> x.getElement ().isVertSplittable ());
}
/**
* @return Should the VBox occupy the full width? The default is
* {@link #DEFAULT_FULL_WIDTH}.
*/
public final boolean isFullWidth ()
{
return m_bFullWidth;
}
/**
* Set usage of full width.
*
* @param bFullWidth
* true to enable full width, false to use
* only what is available.
* @return this for chaining
*/
@Nonnull
public final IMPLTYPE setFullWidth (final boolean bFullWidth)
{
m_bFullWidth = bFullWidth;
return thisAsT ();
}
@Override
@Nonnull
public EChange visit (@Nonnull final IPLVisitor aVisitor) throws IOException
{
EChange ret = EChange.UNCHANGED;
for (final PLVBoxRow aRow : m_aRows)
ret = ret.or (aRow.getElement ().visit (aVisitor));
return ret;
}
@Override
@OverridingMethodsMustInvokeSuper
protected SizeSpec onPrepare (@Nonnull final PreparationContext aCtx)
{
m_aPreparedRowSize = new SizeSpec [m_aRows.size ()];
m_aPreparedElementSize = new SizeSpec [m_aRows.size ()];
final float fElementWidth = aCtx.getAvailableWidth () - getOutlineXSum ();
final float fElementHeight = aCtx.getAvailableHeight () - getOutlineYSum ();
float fMaxRowWidthNet = 0;
float fMaxRowWidthFull = 0;
float fUsedHeightFull = 0;
int nStarRows = 0;
int nAutoRows = 0;
for (final PLVBoxRow aRow : m_aRows)
switch (aRow.getHeight ().getType ())
{
case STAR:
++nStarRows;
break;
case AUTO:
++nAutoRows;
break;
}
int nIndex = 0;
float fRestHeight = fElementHeight;
// 1. prepare all absolute height items (absolute or percentage)
for (final PLVBoxRow aRow : m_aRows)
{
if (aRow.getHeight ().isAbsolute ())
{
final IPLRenderableObject aElement = aRow.getElement ();
// Height of this row
final float fRowHeight = aRow.getHeight ().getEffectiveValue (fElementHeight);
// Prepare child element
final SizeSpec aElementPreparedSize = aElement.prepare (new PreparationContext (aCtx.getGlobalContext (),
fElementWidth,
fRowHeight));
// Update used width
// Effective content width of this element
fMaxRowWidthNet = Math.max (fMaxRowWidthNet, aElementPreparedSize.getWidth ());
final float fRowWidthFull = aElementPreparedSize.getWidth () + aElement.getOutlineXSum ();
fMaxRowWidthFull = Math.max (fMaxRowWidthFull, fRowWidthFull);
// Update used height
fUsedHeightFull += fRowHeight;
fRestHeight -= fRowHeight;
// Without padding and margin
m_aPreparedRowSize[nIndex] = new SizeSpec (m_bFullWidth ? fElementWidth : fRowWidthFull, fRowHeight);
m_aPreparedElementSize[nIndex] = aElementPreparedSize;
}
++nIndex;
}
// 2. prepare all auto widths items (2-pass)
float fUsedAutoHeightFullForStar = fUsedHeightFull;
{
// First pass: identify all auto columns that directly fit in their
// available column width
float fRemainingHeightAuto = 0;
float fUsedHeightAutoTooHigh = 0;
// Full width of this element
final float fAvailableAutoRowHeight = nAutoRows + nStarRows == 0 ? 0 : fRestHeight / (nAutoRows + nStarRows);
final float fAvailableAutoRowHeightAll = fAvailableAutoRowHeight * nAutoRows;
final SizeSpec [] aTooHighAutoRows = new SizeSpec [m_aRows.size ()];
nIndex = 0;
for (final PLVBoxRow aRow : m_aRows)
{
if (aRow.getHeight ().isAuto ())
{
final IPLRenderableObject aElement = aRow.getElement ();
// Prepare child element
final SizeSpec aElementPreparedSize = aElement.prepare (new PreparationContext (aCtx.getGlobalContext (),
fElementWidth,
fAvailableAutoRowHeightAll));
// Use the used size of the element as the row height
final float fRowHeightFull = aElementPreparedSize.getHeight () + aElement.getOutlineYSum ();
if (fRowHeightFull <= fAvailableAutoRowHeight)
{
// Update used height
fUsedHeightFull += fRowHeightFull;
fUsedAutoHeightFullForStar += fRowHeightFull;
// What's left for other auto rows?
fRemainingHeightAuto += fAvailableAutoRowHeight - fRowHeightFull;
// Update used width
fMaxRowWidthNet = Math.max (fMaxRowWidthNet, aElementPreparedSize.getWidth ());
final float fRowWidth = aElementPreparedSize.getWidth () + aElement.getOutlineXSum ();
fMaxRowWidthFull = Math.max (fMaxRowWidthFull, fRowWidth);
// Without padding and margin
m_aPreparedRowSize[nIndex] = new SizeSpec (m_bFullWidth ? fElementWidth : fRowWidth, fRowHeightFull);
m_aPreparedElementSize[nIndex] = aElementPreparedSize;
}
else
{
// Remember prepared sized
aTooHighAutoRows[nIndex] = aElementPreparedSize;
// The whole row height remains
fRemainingHeightAuto += fAvailableAutoRowHeight;
// What would be used ideally
fUsedHeightAutoTooHigh += fRowHeightFull;
}
}
++nIndex;
}
// Second pass: split all too high auto rows on fRemainingHeightAuto
nIndex = 0;
for (final PLVBoxRow aRow : m_aRows)
{
// Only consider too-high auto rows
if (aRow.getHeight ().isAuto () && aTooHighAutoRows[nIndex] != null)
{
final IPLRenderableObject aElement = aRow.getElement ();
// Previously prepared size including outline
final float fTooHighRowHeight = aTooHighAutoRows[nIndex].getHeight () + aElement.getOutlineYSum ();
// Percentage of used height compared to total used height of all too
// high rows (0-1)
final float fAvailableRowHeightPerc = fUsedHeightAutoTooHigh == 0 ? 0 : fTooHighRowHeight /
fUsedHeightAutoTooHigh;
// Use x% of remaining height
// Ensure the height is not smaller than the minimum height - may be
// split afterwards
final float fNewAvailableRowHeight = Math.max (fRemainingHeightAuto * fAvailableRowHeightPerc,
aTooHighAutoRows[nIndex].getHeight ());
// Prepare child element
if (aElement instanceof AbstractPLRenderableObject )
((AbstractPLRenderableObject ) aElement).internalMarkAsNotPrepared ();
final SizeSpec aElementPreparedSize = aElement.prepare (new PreparationContext (aCtx.getGlobalContext (),
fElementWidth,
fNewAvailableRowHeight));
// Use the used size of the element as the row height
final float fRowHeightFull = aElementPreparedSize.getHeight () + aElement.getOutlineYSum ();
// Update used height
fMaxRowWidthNet = Math.max (fMaxRowWidthNet, aElementPreparedSize.getWidth ());
final float fRowWidthFull = aElementPreparedSize.getWidth () + aElement.getOutlineXSum ();
fMaxRowWidthFull = Math.max (fMaxRowWidthFull, fRowWidthFull);
// Update used height
fUsedHeightFull += fRowHeightFull;
// Note: it may be possible, that the prepared size is higher, in
// which case the element may be split afterwards!
if (fRowHeightFull > fNewAvailableRowHeight)
{
fUsedAutoHeightFullForStar += fNewAvailableRowHeight;
if (!aElement.isVertSplittable ())
LOGGER.warn ("VBox row element " +
aElement.getDebugID () +
" uses more height (" +
fRowHeightFull +
") than is available (" +
fNewAvailableRowHeight +
" and is NOT vertical splittable!");
}
else
fUsedAutoHeightFullForStar += fRowHeightFull;
// Without padding and margin
m_aPreparedRowSize[nIndex] = new SizeSpec (m_bFullWidth ? fElementWidth : fRowWidthFull, fRowHeightFull);
m_aPreparedElementSize[nIndex] = aElementPreparedSize;
}
++nIndex;
}
// remaining unused parts of auto rows is automatically available to
// star height rows (based on fUsedHeightFull)
}
// 3. prepare all star height items
{
fRestHeight = fElementHeight - fUsedAutoHeightFullForStar;
// Rest height may be <= 0 if too many "auto" rows are present that take
// more than the available height
final boolean bTooSmallRestHeight = fRestHeight <= 0;
nIndex = 0;
for (final PLVBoxRow aRow : m_aRows)
{
if (aRow.getHeight ().isStar ())
{
final IPLRenderableObject aElement = aRow.getElement ();
// Height of this row
if (nStarRows == 0)
throw new IllegalStateException ("Internal inconsistency");
final float fRowHeight = fRestHeight / nStarRows;
// Prepare child element
// If no height is left, use the full available height
final SizeSpec aElementPreparedSize = aElement.prepare (new PreparationContext (aCtx.getGlobalContext (),
fElementWidth,
bTooSmallRestHeight ? fElementHeight
: fRowHeight));
// Update used width
// Effective content width of this element
fMaxRowWidthNet = Math.max (fMaxRowWidthNet, aElementPreparedSize.getWidth ());
final float fRowWidthFull = aElementPreparedSize.getWidth () + aElement.getOutlineXSum ();
fMaxRowWidthFull = Math.max (fMaxRowWidthFull, fRowWidthFull);
// Update used height
// If no height is left, use the net size of the element
final float fRowHeightFull = bTooSmallRestHeight ? aElementPreparedSize.getHeight () +
aElement.getOutlineYSum ()
: fRowHeight;
fUsedHeightFull += fRowHeightFull;
// Don't change rest-height!
// Without padding and margin
m_aPreparedRowSize[nIndex] = new SizeSpec (m_bFullWidth ? fElementWidth : fRowWidthFull, fRowHeightFull);
m_aPreparedElementSize[nIndex] = aElementPreparedSize;
}
++nIndex;
}
}
// Set min size for block elements
{
nIndex = 0;
for (final PLVBoxRow aRow : m_aRows)
{
final IPLRenderableObject aElement = aRow.getElement ();
if (aElement instanceof AbstractPLElement )
{
final AbstractPLElement aRealElement = (AbstractPLElement ) aElement;
// Set minimum row width and height
aRealElement.setMinSize (m_bFullWidth ? fElementWidth - aRealElement.getOutlineXSum () : fMaxRowWidthNet,
m_aPreparedRowSize[nIndex].getHeight () - aRealElement.getOutlineYSum ());
}
++nIndex;
}
}
// Small consistency check (with rounding included)
if (PLDebugLog.isDebugPrepare ())
{
if (fMaxRowWidthFull - fElementWidth > 0.01)
PLDebugLog.debugPrepare (this,
"uses more width (" + fMaxRowWidthFull + ") than available (" + fElementWidth + ")!");
if (fUsedHeightFull - fElementHeight > 0.01 && !isVertSplittable ())
PLDebugLog.debugPrepare (this,
"uses more height (" + fUsedHeightFull + ") than available (" + fElementHeight + ")!");
}
return new SizeSpec (fMaxRowWidthFull, fUsedHeightFull);
}
@Override
protected void onMarkAsNotPrepared ()
{
m_aPreparedRowSize = null;
m_aPreparedElementSize = null;
for (final PLVBoxRow aRow : m_aRows)
if (aRow.getElement () instanceof AbstractPLRenderableObject )
((AbstractPLRenderableObject ) aRow.getElement ()).internalMarkAsNotPrepared ();
}
@Nullable
public PLSplitResult splitElementVert (final float fAvailableWidth, final float fAvailableHeight)
{
if (fAvailableHeight <= 0)
return null;
if (!containsAnyVertSplittableElement ())
{
// Splitting makes no sense
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this, "Cannot split because no vertical splittable elements are contained");
return null;
}
// Create resulting VBoxes - the first one is not splittable again!
final AbstractPLVBox aVBox1 = internalCreateNewVertSplitObject (thisAsT ()).setID (getID () + "-1")
.setVertSplittable (false);
final AbstractPLVBox aVBox2 = internalCreateNewVertSplitObject (thisAsT ()).setID (getID () + "-2")
.setVertSplittable (true);
final int nTotalRows = getRowCount ();
final ICommonsList aVBox1RowSize = new CommonsArrayList <> (nTotalRows);
final ICommonsList aVBox1ElementSize = new CommonsArrayList <> (nTotalRows);
float fUsedVBox1RowHeight = 0;
// Copy all header rows to both boxes
for (int nRow = 0; nRow < m_nHeaderRowCount; ++nRow)
{
final IPLRenderableObject aHeaderRowElement = getRowElementAtIndex (nRow);
aVBox1.addRow (aHeaderRowElement);
aVBox2.addRow (aHeaderRowElement);
fUsedVBox1RowHeight += m_aPreparedRowSize[nRow].getHeight ();
aVBox1RowSize.add (m_aPreparedRowSize[nRow]);
aVBox1ElementSize.add (m_aPreparedElementSize[nRow]);
}
// The height and width after header rows are identical
final ICommonsList aVBox2RowSize = aVBox1RowSize.getClone ();
final ICommonsList aVBox2ElementSize = aVBox1ElementSize.getClone ();
float fUsedVBox2RowHeight = fUsedVBox1RowHeight;
// Copy all content rows
boolean bOnVBox1 = true;
for (int nRow = m_nHeaderRowCount; nRow < nTotalRows; ++nRow)
{
final IPLRenderableObject aRowElement = getRowElementAtIndex (nRow);
final float fRowHeight = m_aPreparedRowSize[nRow].getHeight ();
if (bOnVBox1)
{
if (fUsedVBox1RowHeight + fRowHeight <= fAvailableHeight)
{
// Row fits in first VBox without a change
aVBox1.addRow (aRowElement);
fUsedVBox1RowHeight += fRowHeight;
// Use data as is
aVBox1RowSize.add (m_aPreparedRowSize[nRow]);
aVBox1ElementSize.add (m_aPreparedElementSize[nRow]);
}
else
{
// Row does not fit - check if it can be splitted
bOnVBox1 = false;
// try to split the row
boolean bSplittedRow = false;
if (aRowElement.isVertSplittable ())
{
final float fSplitWidth = m_aPreparedElementSize[nRow].getWidth ();
final float fSplitHeight = fAvailableHeight - fUsedVBox1RowHeight - aRowElement.getOutlineYSum ();
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this,
"Trying to split " +
aRowElement.getDebugID () +
" into pieces for split size " +
PLDebugLog.getWH (fSplitWidth, fSplitHeight));
// Try to split the element contained in the row
final PLSplitResult aSplitResult = aRowElement.getAsSplittable ()
.splitElementVert (fSplitWidth, fSplitHeight);
if (aSplitResult != null)
{
final IPLRenderableObject aVBox1RowElement = aSplitResult.getFirstElement ().getElement ();
aVBox1.addRow (aVBox1RowElement);
fUsedVBox1RowHeight += aSplitResult.getFirstElement ().getHeightFull ();
aVBox1RowSize.add (aSplitResult.getFirstElement ().getSizeFull ());
aVBox1ElementSize.add (aSplitResult.getFirstElement ().getSize ());
final IPLRenderableObject aVBox2RowElement = aSplitResult.getSecondElement ().getElement ();
aVBox2.addRow (aVBox2RowElement);
fUsedVBox2RowHeight += aSplitResult.getSecondElement ().getHeightFull ();
aVBox2RowSize.add (aSplitResult.getSecondElement ().getSizeFull ());
aVBox2ElementSize.add (aSplitResult.getSecondElement ().getSize ());
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this,
"Split row element " +
aRowElement.getDebugID () +
" (Row " +
nRow +
") into pieces: " +
aVBox1RowElement.getDebugID () +
" (" +
aSplitResult.getFirstElement ().getWidth () +
"+" +
aVBox1RowElement.getOutlineXSum () +
" & " +
aSplitResult.getFirstElement ().getHeight () +
"+" +
aVBox1RowElement.getOutlineYSum () +
") and " +
aVBox2RowElement.getDebugID () +
" (" +
aSplitResult.getSecondElement ().getWidth () +
"+" +
aVBox2RowElement.getOutlineXSum () +
" & " +
aSplitResult.getSecondElement ().getHeight () +
"+" +
aVBox2RowElement.getOutlineYSum () +
")");
bSplittedRow = true;
}
else
{
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this,
"Failed to split row element " +
aRowElement.getDebugID () +
" (Row " +
nRow +
") into pieces");
}
}
if (!bSplittedRow)
{
// just add the full row to the second VBox since the row does not
// fit on first page
aVBox2.addRow (aRowElement);
fUsedVBox2RowHeight += fRowHeight;
aVBox2RowSize.add (m_aPreparedRowSize[nRow]);
aVBox2ElementSize.add (m_aPreparedElementSize[nRow]);
}
}
}
else
{
// We're already on VBox 2 - add all elements, since VBox2 may be split
// again later!
aVBox2.addRow (aRowElement);
fUsedVBox2RowHeight += fRowHeight;
aVBox2RowSize.add (m_aPreparedRowSize[nRow]);
aVBox2ElementSize.add (m_aPreparedElementSize[nRow]);
}
}
if (aVBox1.getRowCount () == m_nHeaderRowCount)
{
// Splitting makes no sense!
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this, "Splitting makes no sense, because VBox 1 would be empty");
return null;
}
if (aVBox2.getRowCount () == m_nHeaderRowCount)
{
// Splitting makes no sense!
if (PLDebugLog.isDebugSplit ())
PLDebugLog.debugSplit (this, "Splitting makes no sense, because VBox 2 would be empty");
return null;
}
// Excluding padding/margin
aVBox1.internalMarkAsPrepared (new SizeSpec (fAvailableWidth, fUsedVBox1RowHeight));
aVBox1.m_aPreparedRowSize = ArrayHelper.newArray (aVBox1RowSize, SizeSpec.class);
aVBox1.m_aPreparedElementSize = ArrayHelper.newArray (aVBox1ElementSize, SizeSpec.class);
aVBox2.internalMarkAsPrepared (new SizeSpec (fAvailableWidth, fUsedVBox2RowHeight));
aVBox2.m_aPreparedRowSize = ArrayHelper.newArray (aVBox2RowSize, SizeSpec.class);
aVBox2.m_aPreparedElementSize = ArrayHelper.newArray (aVBox2ElementSize, SizeSpec.class);
return new PLSplitResult (new PLElementWithSize (aVBox1, new SizeSpec (fAvailableWidth, fUsedVBox1RowHeight)),
new PLElementWithSize (aVBox2, new SizeSpec (fAvailableWidth, fUsedVBox2RowHeight)));
}
@Override
protected void onRender (@Nonnull final PageRenderContext aCtx) throws IOException
{
final float fCurX = aCtx.getStartLeft () + getOutlineLeft ();
float fCurY = aCtx.getStartTop () - getOutlineTop ();
int nIndex = 0;
for (final PLVBoxRow aRow : m_aRows)
{
final IPLRenderableObject aElement = aRow.getElement ();
final float fRowWidth = m_aPreparedRowSize[nIndex].getWidth ();
final float fRowHeight = m_aPreparedRowSize[nIndex].getHeight ();
// Perform contained element after border
final PageRenderContext aRowElementCtx = new PageRenderContext (aCtx, fCurX, fCurY, fRowWidth, fRowHeight);
aElement.render (aRowElementCtx);
// Update Y-pos
fCurY -= fRowHeight;
++nIndex;
}
}
@Override
public String toString ()
{
return ToStringGenerator.getDerived (super.toString ())
.append ("Rows", m_aRows)
.appendIfNotNull ("PreparedRowSize", m_aPreparedRowSize)
.appendIfNotNull ("PreparedElementSize", m_aPreparedElementSize)
.getToString ();
}
}
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