/* * 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. */ /* $Id$ */ package org.apache.fop.render; import java.awt.Color; import java.awt.Rectangle; import java.awt.geom.AffineTransform; import java.awt.geom.Rectangle2D; import java.util.List; import java.util.Map; import org.w3c.dom.Document; import org.apache.batik.parser.AWTTransformProducer; import org.apache.xmlgraphics.image.loader.ImageSize; import org.apache.xmlgraphics.util.QName; import org.apache.xmlgraphics.util.UnitConv; import org.apache.fop.apps.FOUserAgent; import org.apache.fop.area.Area; import org.apache.fop.area.Block; import org.apache.fop.area.BlockViewport; import org.apache.fop.area.CTM; import org.apache.fop.area.NormalFlow; import org.apache.fop.area.RegionReference; import org.apache.fop.area.RegionViewport; import org.apache.fop.area.Trait; import org.apache.fop.area.inline.ForeignObject; import org.apache.fop.area.inline.InlineArea; import org.apache.fop.area.inline.InlineViewport; import org.apache.fop.fo.Constants; import org.apache.fop.fo.extensions.ExtensionElementMapping; import org.apache.fop.fonts.FontMetrics; import org.apache.fop.traits.BorderProps; /** * Abstract base class for renderers like PDF and PostScript where many painting operations * follow similar patterns which makes it possible to share some code. */ public abstract class AbstractPathOrientedRenderer extends PrintRenderer { /** * @param userAgent the user agent that contains configuration details. This cannot be null. */ public AbstractPathOrientedRenderer(FOUserAgent userAgent) { super(userAgent); } /** * Handle block traits. * The block could be any sort of block with any positioning * so this should render the traits such as border and background * in its position. * * @param block the block to render the traits */ protected void handleBlockTraits(Block block) { float borderPaddingStart = block.getBorderAndPaddingWidthStart() / 1000f; float borderPaddingEnd = block.getBorderAndPaddingWidthEnd() / 1000f; float borderPaddingBefore = block.getBorderAndPaddingWidthBefore() / 1000f; float borderPaddingAfter = block.getBorderAndPaddingWidthAfter() / 1000f; float startx = currentIPPosition / 1000f; float starty = currentBPPosition / 1000f; float width = block.getIPD() / 1000f; float height = block.getBPD() / 1000f; int level = block.getBidiLevel(); if ((level == -1) || ((level & 1) == 0)) { startx += block.getStartIndent() / 1000f; startx -= borderPaddingStart; } else { startx += block.getEndIndent() / 1000f; startx -= borderPaddingEnd; } width += borderPaddingStart; width += borderPaddingEnd; height += borderPaddingBefore; height += borderPaddingAfter; drawBackAndBorders(block, startx, starty, width, height); } /** * Handle the traits for a region * This is used to draw the traits for the given page region. * (See Sect. 6.4.1.2 of XSL-FO spec.) * @param region the RegionViewport whose region is to be drawn */ protected void handleRegionTraits(RegionViewport region) { Rectangle2D viewArea = region.getViewArea(); RegionReference referenceArea = region.getRegionReference(); float startx = (float)(viewArea.getX() / 1000f); float starty = (float)(viewArea.getY() / 1000f); float width = (float)(viewArea.getWidth() / 1000f); float height = (float)(viewArea.getHeight() / 1000f); // adjust the current position according to region borders and padding currentBPPosition = referenceArea.getBorderAndPaddingWidthBefore(); int level = region.getBidiLevel(); if ((level == -1) || ((level & 1) == 0)) { currentIPPosition = referenceArea.getBorderAndPaddingWidthStart(); } else { currentIPPosition = referenceArea.getBorderAndPaddingWidthEnd(); } // draw background (traits are in the RegionViewport) // and borders (traits are in the RegionReference) drawBackAndBorders(region, referenceArea, startx, starty, width, height); } /** * Draw the background and borders. * This draws the background and border traits for an area given * the position. * * @param area the area to get the traits from * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area */ protected void drawBackAndBorders(Area area, float startx, float starty, float width, float height) { drawBackAndBorders(area, area, startx, starty, width, height); } /** * Draw the background and borders. * This draws the background and border traits for an area given * the position. * * @param backgroundArea the area to get the background traits from * @param borderArea the area to get the border traits from * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area */ protected void drawBackAndBorders(Area backgroundArea, Area borderArea, float startx, float starty, float width, float height) { // draw background then border BorderProps bpsBefore = (BorderProps)borderArea.getTrait(Trait.BORDER_BEFORE); BorderProps bpsAfter = (BorderProps)borderArea.getTrait(Trait.BORDER_AFTER); BorderProps bpsStart = (BorderProps)borderArea.getTrait(Trait.BORDER_START); BorderProps bpsEnd = (BorderProps)borderArea.getTrait(Trait.BORDER_END); Trait.Background backgroundTrait = (Trait.Background)backgroundArea.getTrait(Trait.BACKGROUND); drawBackground(startx, starty, width, height, (Trait.Background) backgroundArea.getTrait(Trait.BACKGROUND), bpsBefore, bpsAfter, bpsStart, bpsEnd, backgroundArea.getBidiLevel()); // TODO what is the default bg color? Should we serialize it? Color bg = Color.white; if (backgroundTrait != null && backgroundTrait.getColor() != null) { bg = backgroundTrait.getColor(); } drawBorders(startx, starty, width, height, bpsBefore, bpsAfter, bpsStart, bpsEnd, backgroundArea.getBidiLevel(), bg); } /** * Draw the background. * This draws the background given the position and the traits. * * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area * @param back the background traits * @param bpsBefore the border-before traits * @param bpsAfter the border-after traits * @param bpsStart the border-start traits * @param bpsEnd the border-end traits * @param level of bidirectional embedding */ protected void drawBackground(float startx, float starty, float width, float height, Trait.Background back, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd, int level) { BorderProps bpsTop = bpsBefore; BorderProps bpsBottom = bpsAfter; BorderProps bpsLeft; BorderProps bpsRight; if ((level == -1) || ((level & 1) == 0)) { bpsLeft = bpsStart; bpsRight = bpsEnd; } else { bpsLeft = bpsEnd; bpsRight = bpsStart; } drawBackground(startx, starty, width, height, back, bpsTop, bpsBottom, bpsLeft, bpsRight); } /** * Draw the background. * This draws the background given the position and the traits. * * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area * @param back the background traits * @param bpsTop the border specification on the top edge * @param bpsBottom the border traits associated with bottom edge * @param bpsLeft the border specification on the left edge * @param bpsRight the border specification on the right edge */ protected void drawBackground(float startx, float starty, float width, float height, Trait.Background back, BorderProps bpsTop, BorderProps bpsBottom, BorderProps bpsLeft, BorderProps bpsRight) { if (back != null) { endTextObject(); //Calculate padding rectangle float sx = startx; float sy = starty; float paddRectWidth = width; float paddRectHeight = height; if (bpsLeft != null) { sx += bpsLeft.width / 1000f; paddRectWidth -= bpsLeft.width / 1000f; } if (bpsTop != null) { sy += bpsTop.width / 1000f; paddRectHeight -= bpsTop.width / 1000f; } if (bpsRight != null) { paddRectWidth -= bpsRight.width / 1000f; } if (bpsBottom != null) { paddRectHeight -= bpsBottom.width / 1000f; } saveGraphicsState(); clipBackground(sx, sy, paddRectWidth, paddRectHeight, bpsTop, bpsBottom, bpsLeft, bpsRight); if (back.getColor() != null) { updateColor(back.getColor(), true); fillRect(sx, sy, paddRectWidth, paddRectHeight); } if (back.getImageInfo() != null) { ImageSize imageSize = back.getImageInfo().getSize(); int targetWidth = imageSize.getWidthMpt(); int targetHeight = imageSize.getHeightMpt(); double multiplier = 1.0; if (back.getImageTargetWidth() != 0 && back.getImageTargetHeight() != 0) { multiplier = Math.min(1.0 * back.getImageTargetWidth() / targetWidth, 1.0 * back.getImageTargetHeight() / targetHeight); } else if (back.getImageTargetHeight() != 0) { multiplier = 1.0 * back.getImageTargetHeight() / targetHeight; } else if (back.getImageTargetWidth() != 0) { multiplier = 1.0 * back.getImageTargetWidth() / targetWidth; } targetWidth = (int) (targetWidth * multiplier); targetHeight = (int) (targetHeight * multiplier); int horzCount = (int) ((paddRectWidth * 1000 / targetWidth) + 1.0f); int vertCount = (int) ((paddRectHeight * 1000 / targetHeight) + 1.0f); if (back.getRepeat() == EN_NOREPEAT) { horzCount = 1; vertCount = 1; } else if (back.getRepeat() == EN_REPEATX) { vertCount = 1; } else if (back.getRepeat() == EN_REPEATY) { horzCount = 1; } //change from points to millipoints sx *= 1000; sy *= 1000; if (horzCount == 1) { sx += back.getHoriz(); } if (vertCount == 1) { sy += back.getVertical(); } for (int x = 0; x < horzCount; x++) { for (int y = 0; y < vertCount; y++) { // place once Rectangle2D pos; // Image positions are relative to the currentIP/BP pos = new Rectangle2D.Float(sx - currentIPPosition + (x * targetWidth), sy - currentBPPosition + (y * targetHeight), targetWidth, targetHeight); drawImage(back.getURL(), pos); } } } restoreGraphicsState(); } } /** * TODO represent border related parameters in a class * Clip the background to the inner border. * This draws the border traits given the position and the traits. * * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area * @param bpsBefore the border-before traits * @param bpsAfter the border-after traits * @param bpsStart the border-start traits * @param bpsEnd the border-end traits * @param innerBackgroundColor the background color of the block */ protected void clipBackground(float startx, float starty, float width, float height, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) { clipRect(startx, starty, width, height); } /** * Draw the borders. * This draws the border traits given the position and the traits. * * @param startx the start x position * @param starty the start y position * @param width the width of the area * @param height the height of the area * @param bpsBefore the border traits associated with before edge * @param bpsAfter the border traits associated with after edge * @param bpsStart the border traits associated with start edge * @param bpsEnd the border traits associated with end edge * @param level of bidirectional embedding * @param innerBackgroundColor the background color of the block */ protected void drawBorders(float startx, float starty, float width, float height, BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd, int level, Color innerBackgroundColor) { Rectangle2D.Float borderRect = new Rectangle2D.Float(startx, starty, width, height); BorderProps bpsTop = bpsBefore; BorderProps bpsBottom = bpsAfter; BorderProps bpsLeft; BorderProps bpsRight; if ((level == -1) || ((level & 1) == 0)) { bpsLeft = bpsStart; bpsRight = bpsEnd; } else { bpsLeft = bpsEnd; bpsRight = bpsStart; } drawBorders(borderRect, bpsTop, bpsBottom, bpsLeft, bpsRight, innerBackgroundColor); } private static final int TOP = 0; private static final int RIGHT = 1; private static final int BOTTOM = 2; private static final int LEFT = 3; /** * Draws borders. * @param borderRect the border rectangle * @param bpsTop the border specification on the top edge * @param bpsBottom the border traits associated with bottom edge * @param bpsLeft the border specification on the left edge * @param bpsRight the border specification on the right edge * @param innerBackgroundColor the background color of the block */ protected void drawBorders(Rectangle2D.Float borderRect, BorderProps bpsTop, BorderProps bpsBottom, BorderProps bpsLeft, BorderProps bpsRight, Color innerBackgroundColor) { //TODO generalize each of the four conditions into using a parameterized drawBorder() boolean[] border = new boolean[] { (bpsTop != null), (bpsRight != null), (bpsBottom != null), (bpsLeft != null)}; float startx = borderRect.x; float starty = borderRect.y; float width = borderRect.width; float height = borderRect.height; float[] borderWidth = new float[] { (border[TOP] ? bpsTop.width / 1000f : 0.0f), (border[RIGHT] ? bpsRight.width / 1000f : 0.0f), (border[BOTTOM] ? bpsBottom.width / 1000f : 0.0f), (border[LEFT] ? bpsLeft.width / 1000f : 0.0f)}; float[] clipw = new float[] { BorderProps.getClippedWidth(bpsTop) / 1000f, BorderProps.getClippedWidth(bpsRight) / 1000f, BorderProps.getClippedWidth(bpsBottom) / 1000f, BorderProps.getClippedWidth(bpsLeft) / 1000f}; starty += clipw[TOP]; height -= clipw[TOP]; height -= clipw[BOTTOM]; startx += clipw[LEFT]; width -= clipw[LEFT]; width -= clipw[RIGHT]; boolean[] slant = new boolean[] { (border[LEFT] && border[TOP]), (border[TOP] && border[RIGHT]), (border[RIGHT] && border[BOTTOM]), (border[BOTTOM] && border[LEFT])}; if (bpsTop != null) { endTextObject(); float sx1 = startx; float sx2 = (slant[TOP] ? sx1 + borderWidth[LEFT] - clipw[LEFT] : sx1); float ex1 = startx + width; float ex2 = (slant[RIGHT] ? ex1 - borderWidth[RIGHT] + clipw[RIGHT] : ex1); float outery = starty - clipw[TOP]; float clipy = outery + clipw[TOP]; float innery = outery + borderWidth[TOP]; saveGraphicsState(); moveTo(sx1, clipy); float sx1a = sx1; float ex1a = ex1; if (isCollapseOuter(bpsTop)) { if (isCollapseOuter(bpsLeft)) { sx1a -= clipw[LEFT]; } if (isCollapseOuter(bpsRight)) { ex1a += clipw[RIGHT]; } lineTo(sx1a, outery); lineTo(ex1a, outery); } lineTo(ex1, clipy); lineTo(ex2, innery); lineTo(sx2, innery); closePath(); clip(); drawBorderLine(sx1a, outery, ex1a, innery, true, true, bpsTop.style, bpsTop.color); restoreGraphicsState(); } if (bpsRight != null) { endTextObject(); float sy1 = starty; float sy2 = (slant[RIGHT] ? sy1 + borderWidth[TOP] - clipw[TOP] : sy1); float ey1 = starty + height; float ey2 = (slant[BOTTOM] ? ey1 - borderWidth[BOTTOM] + clipw[BOTTOM] : ey1); float outerx = startx + width + clipw[RIGHT]; float clipx = outerx - clipw[RIGHT]; float innerx = outerx - borderWidth[RIGHT]; saveGraphicsState(); moveTo(clipx, sy1); float sy1a = sy1; float ey1a = ey1; if (isCollapseOuter(bpsRight)) { if (isCollapseOuter(bpsTop)) { sy1a -= clipw[TOP]; } if (isCollapseOuter(bpsBottom)) { ey1a += clipw[BOTTOM]; } lineTo(outerx, sy1a); lineTo(outerx, ey1a); } lineTo(clipx, ey1); lineTo(innerx, ey2); lineTo(innerx, sy2); closePath(); clip(); drawBorderLine(innerx, sy1a, outerx, ey1a, false, false, bpsRight.style, bpsRight.color); restoreGraphicsState(); } if (bpsBottom != null) { endTextObject(); float sx1 = startx; float sx2 = (slant[LEFT] ? sx1 + borderWidth[LEFT] - clipw[LEFT] : sx1); float ex1 = startx + width; float ex2 = (slant[BOTTOM] ? ex1 - borderWidth[RIGHT] + clipw[RIGHT] : ex1); float outery = starty + height + clipw[BOTTOM]; float clipy = outery - clipw[BOTTOM]; float innery = outery - borderWidth[BOTTOM]; saveGraphicsState(); moveTo(ex1, clipy); float sx1a = sx1; float ex1a = ex1; if (isCollapseOuter(bpsBottom)) { if (isCollapseOuter(bpsLeft)) { sx1a -= clipw[LEFT]; } if (isCollapseOuter(bpsRight)) { ex1a += clipw[RIGHT]; } lineTo(ex1a, outery); lineTo(sx1a, outery); } lineTo(sx1, clipy); lineTo(sx2, innery); lineTo(ex2, innery); closePath(); clip(); drawBorderLine(sx1a, innery, ex1a, outery, true, false, bpsBottom.style, bpsBottom.color); restoreGraphicsState(); } if (bpsLeft != null) { endTextObject(); float sy1 = starty; float sy2 = (slant[TOP] ? sy1 + borderWidth[TOP] - clipw[TOP] : sy1); float ey1 = sy1 + height; float ey2 = (slant[LEFT] ? ey1 - borderWidth[BOTTOM] + clipw[BOTTOM] : ey1); float outerx = startx - clipw[LEFT]; float clipx = outerx + clipw[LEFT]; float innerx = outerx + borderWidth[LEFT]; saveGraphicsState(); moveTo(clipx, ey1); float sy1a = sy1; float ey1a = ey1; if (isCollapseOuter(bpsLeft)) { if (isCollapseOuter(bpsTop)) { sy1a -= clipw[TOP]; } if (isCollapseOuter(bpsBottom)) { ey1a += clipw[BOTTOM]; } lineTo(outerx, ey1a); lineTo(outerx, sy1a); } lineTo(clipx, sy1); lineTo(innerx, sy2); lineTo(innerx, ey2); closePath(); clip(); drawBorderLine(outerx, sy1a, innerx, ey1a, false, true, bpsLeft.style, bpsLeft.color); restoreGraphicsState(); } } private boolean isCollapseOuter(BorderProps bp) { return bp != null && bp.isCollapseOuter(); } /** * Common method to render the background and borders for any inline area. * The all borders and padding are drawn outside the specified area. * @param area the inline area for which the background, border and padding is to be * rendered */ protected void renderInlineAreaBackAndBorders(InlineArea area) { float borderPaddingStart = area.getBorderAndPaddingWidthStart() / 1000f; float borderPaddingEnd = area.getBorderAndPaddingWidthEnd() / 1000f; float borderPaddingBefore = area.getBorderAndPaddingWidthBefore() / 1000f; float borderPaddingAfter = area.getBorderAndPaddingWidthAfter() / 1000f; float bpwidth = borderPaddingStart + borderPaddingEnd; float bpheight = borderPaddingBefore + borderPaddingAfter; float height = area.getBPD() / 1000f; if (height != 0.0f || bpheight != 0.0f && bpwidth != 0.0f) { float x = currentIPPosition / 1000f; float y = (currentBPPosition + area.getBlockProgressionOffset()) / 1000f; float width = area.getIPD() / 1000f; drawBackAndBorders(area, x, y - borderPaddingBefore , width + bpwidth , height + bpheight); } } /** Constant for the fox:transform extension attribute */ protected static final QName FOX_TRANSFORM = new QName(ExtensionElementMapping.URI, "fox:transform"); /** {@inheritDoc} */ protected void renderBlockViewport(BlockViewport bv, List children) { // clip and position viewport if necessary // save positions int saveIP = currentIPPosition; int saveBP = currentBPPosition; CTM ctm = bv.getCTM(); int borderPaddingBefore = bv.getBorderAndPaddingWidthBefore(); int positioning = bv.getPositioning(); if (positioning == Block.ABSOLUTE || positioning == Block.FIXED) { //For FIXED, we need to break out of the current viewports to the //one established by the page. We save the state stack for restoration //after the block-container has been painted. See below. List breakOutList = null; if (positioning == Block.FIXED) { breakOutList = breakOutOfStateStack(); } AffineTransform positionTransform = new AffineTransform(); positionTransform.translate(bv.getXOffset(), bv.getYOffset()); int level = bv.getBidiLevel(); int borderPaddingStart = bv.getBorderAndPaddingWidthStart(); int borderPaddingEnd = bv.getBorderAndPaddingWidthEnd(); //"left/"top" (bv.getX/YOffset()) specify the position of the content rectangle if ((level == -1) || ((level & 1) == 0)) { positionTransform.translate(-borderPaddingStart, -borderPaddingBefore); } else { positionTransform.translate(-borderPaddingEnd, -borderPaddingBefore); } //Free transformation for the block-container viewport String transf; transf = bv.getForeignAttributeValue(FOX_TRANSFORM); if (transf != null) { AffineTransform freeTransform = AWTTransformProducer.createAffineTransform(transf); positionTransform.concatenate(freeTransform); } //Viewport position if (!positionTransform.isIdentity()) { establishTransformationMatrix(positionTransform); } //This is the content-rect float width = bv.getIPD() / 1000f; float height = bv.getBPD() / 1000f; //Background and borders float borderPaddingWidth = (borderPaddingStart + borderPaddingEnd) / 1000f; float borderPaddingHeight = (borderPaddingBefore + bv.getBorderAndPaddingWidthAfter()) / 1000f; drawBackAndBorders(bv, 0, 0, width + borderPaddingWidth, height + borderPaddingHeight); //Shift to content rectangle after border painting AffineTransform contentRectTransform = new AffineTransform(); if ((level == -1) || ((level & 1) == 0)) { contentRectTransform.translate(borderPaddingStart, borderPaddingBefore); } else { contentRectTransform.translate(borderPaddingEnd, borderPaddingBefore); } if (!contentRectTransform.isIdentity()) { establishTransformationMatrix(contentRectTransform); } //Clipping if (bv.hasClip()) { clipRect(0f, 0f, width, height); } //Set up coordinate system for content rectangle AffineTransform contentTransform = ctm.toAffineTransform(); if (!contentTransform.isIdentity()) { establishTransformationMatrix(contentTransform); } currentIPPosition = 0; currentBPPosition = 0; renderBlocks(bv, children); if (!contentTransform.isIdentity()) { restoreGraphicsState(); } if (!contentRectTransform.isIdentity()) { restoreGraphicsState(); } if (!positionTransform.isIdentity()) { restoreGraphicsState(); } //For FIXED, we need to restore break out now we are done if (positioning == Block.FIXED) { if (breakOutList != null) { restoreStateStackAfterBreakOut(breakOutList); } } currentIPPosition = saveIP; currentBPPosition = saveBP; } else { currentBPPosition += bv.getSpaceBefore(); //borders and background in the old coordinate system handleBlockTraits(bv); //Advance to start of content area currentIPPosition += bv.getStartIndent(); CTM tempctm = new CTM(containingIPPosition, currentBPPosition); ctm = tempctm.multiply(ctm); //Now adjust for border/padding currentBPPosition += borderPaddingBefore; Rectangle clippingRect = null; if (bv.hasClip()) { clippingRect = new Rectangle(currentIPPosition, currentBPPosition, bv.getIPD(), bv.getBPD()); } startVParea(ctm, clippingRect); currentIPPosition = 0; currentBPPosition = 0; renderBlocks(bv, children); endVParea(); currentIPPosition = saveIP; currentBPPosition = saveBP; currentBPPosition += (bv.getAllocBPD()); } } /** {@inheritDoc} */ protected void renderReferenceArea(Block block) { // save position and offset int saveIP = currentIPPosition; int saveBP = currentBPPosition; //Establish a new coordinate system AffineTransform at = new AffineTransform(); at.translate(currentIPPosition, currentBPPosition); at.translate(block.getXOffset(), block.getYOffset()); at.translate(0, block.getSpaceBefore()); if (!at.isIdentity()) { establishTransformationMatrix(at); } currentIPPosition = 0; currentBPPosition = 0; handleBlockTraits(block); List children = block.getChildAreas(); if (children != null) { renderBlocks(block, children); } if (!at.isIdentity()) { restoreGraphicsState(); } // stacked and relative blocks effect stacking currentIPPosition = saveIP; currentBPPosition = saveBP; } /** {@inheritDoc} */ protected void renderFlow(NormalFlow flow) { // save position and offset int saveIP = currentIPPosition; int saveBP = currentBPPosition; //Establish a new coordinate system AffineTransform at = new AffineTransform(); at.translate(currentIPPosition, currentBPPosition); if (!at.isIdentity()) { establishTransformationMatrix(at); } currentIPPosition = 0; currentBPPosition = 0; super.renderFlow(flow); if (!at.isIdentity()) { restoreGraphicsState(); } // stacked and relative blocks effect stacking currentIPPosition = saveIP; currentBPPosition = saveBP; } /** * Concatenates the current transformation matrix with the given one, therefore establishing * a new coordinate system. * @param at the transformation matrix to process (coordinates in points) */ protected abstract void concatenateTransformationMatrix(AffineTransform at); /** * Render an inline viewport. * This renders an inline viewport by clipping if necessary. * @param viewport the viewport to handle */ public void renderInlineViewport(InlineViewport viewport) { int level = viewport.getBidiLevel(); float x = currentIPPosition / 1000f; float y = (currentBPPosition + viewport.getBlockProgressionOffset()) / 1000f; float width = viewport.getIPD() / 1000f; float height = viewport.getBPD() / 1000f; // TODO: Calculate the border rect correctly. float borderPaddingStart = viewport.getBorderAndPaddingWidthStart() / 1000f; float borderPaddingEnd = viewport.getBorderAndPaddingWidthEnd() / 1000f; float borderPaddingBefore = viewport.getBorderAndPaddingWidthBefore() / 1000f; float borderPaddingAfter = viewport.getBorderAndPaddingWidthAfter() / 1000f; float bpwidth = borderPaddingStart + borderPaddingEnd; float bpheight = borderPaddingBefore + borderPaddingAfter; drawBackAndBorders(viewport, x, y, width + bpwidth, height + bpheight); if (viewport.hasClip()) { saveGraphicsState(); if ((level == -1) || ((level & 1) == 0)) { clipRect(x + borderPaddingStart, y + borderPaddingBefore, width, height); } else { clipRect(x + borderPaddingEnd, y + borderPaddingBefore, width, height); } } super.renderInlineViewport(viewport); if (viewport.hasClip()) { restoreGraphicsState(); } } /** * Restores the state stack after a break out. * @param breakOutList the state stack to restore. */ protected abstract void restoreStateStackAfterBreakOut(List breakOutList); /** * Breaks out of the state stack to handle fixed block-containers. * @return the saved state stack to recreate later */ protected abstract List breakOutOfStateStack(); /** Saves the graphics state of the rendering engine. */ protected abstract void saveGraphicsState(); /** Restores the last graphics state of the rendering engine. */ protected abstract void restoreGraphicsState(); /** Indicates the beginning of a text object. */ protected abstract void beginTextObject(); /** Indicates the end of a text object. */ protected abstract void endTextObject(); /** * Paints the text decoration marks. * @param fm Current typeface * @param fontsize Current font size * @param inline inline area to paint the marks for * @param baseline position of the baseline * @param startx start IPD */ protected void renderTextDecoration(FontMetrics fm, int fontsize, InlineArea inline, int baseline, int startx) { boolean hasTextDeco = inline.hasUnderline() || inline.hasOverline() || inline.hasLineThrough(); if (hasTextDeco) { endTextObject(); float descender = fm.getDescender(fontsize) / 1000f; float capHeight = fm.getCapHeight(fontsize) / 1000f; float halfLineWidth = (descender / -8f) / 2f; float endx = (startx + inline.getIPD()) / 1000f; if (inline.hasUnderline()) { Color ct = (Color) inline.getTrait(Trait.UNDERLINE_COLOR); float y = baseline - descender / 2f; drawBorderLine(startx / 1000f, (y - halfLineWidth) / 1000f, endx, (y + halfLineWidth) / 1000f, true, true, Constants.EN_SOLID, ct); } if (inline.hasOverline()) { Color ct = (Color) inline.getTrait(Trait.OVERLINE_COLOR); float y = (float)(baseline - (1.1 * capHeight)); drawBorderLine(startx / 1000f, (y - halfLineWidth) / 1000f, endx, (y + halfLineWidth) / 1000f, true, true, Constants.EN_SOLID, ct); } if (inline.hasLineThrough()) { Color ct = (Color) inline.getTrait(Trait.LINETHROUGH_COLOR); float y = (float)(baseline - (0.45 * capHeight)); drawBorderLine(startx / 1000f, (y - halfLineWidth) / 1000f, endx, (y + halfLineWidth) / 1000f, true, true, Constants.EN_SOLID, ct); } } } /** Clip using the current path. */ protected abstract void clip(); /** * Clip using a rectangular area. * @param x the x coordinate (in points) * @param y the y coordinate (in points) * @param width the width of the rectangle (in points) * @param height the height of the rectangle (in points) */ protected abstract void clipRect(float x, float y, float width, float height); /** * Moves the current point to (x, y), omitting any connecting line segment. * @param x x coordinate * @param y y coordinate */ protected abstract void moveTo(float x, float y); /** * Appends a straight line segment from the current point to (x, y). The * new current point is (x, y). * @param x x coordinate * @param y y coordinate */ protected abstract void lineTo(float x, float y); /** * Closes the current subpath by appending a straight line segment from * the current point to the starting point of the subpath. */ protected abstract void closePath(); /** * Fill a rectangular area. * @param x the x coordinate * @param y the y coordinate * @param width the width of the rectangle * @param height the height of the rectangle */ protected abstract void fillRect(float x, float y, float width, float height); /** * Establishes a new foreground or fill color. * @param col the color to apply (null skips this operation) * @param fill true to set the fill color, false for the foreground color */ protected abstract void updateColor(Color col, boolean fill); /** * Draw an image at the indicated location. * @param url the URI/URL of the image * @param pos the position of the image * @param foreignAttributes an optional Map with foreign attributes, may be null */ protected abstract void drawImage(String url, Rectangle2D pos, Map foreignAttributes); /** * Draw an image at the indicated location. * @param url the URI/URL of the image * @param pos the position of the image */ protected final void drawImage(String url, Rectangle2D pos) { drawImage(url, pos, null); } /** * Draw a border segment of an XSL-FO style border. * @param x1 starting x coordinate * @param y1 starting y coordinate * @param x2 ending x coordinate * @param y2 ending y coordinate * @param horz true for horizontal border segments, false for vertical border segments * @param startOrBefore true for border segments on the start or before edge, * false for end or after. * @param style the border style (one of Constants.EN_DASHED etc.) * @param col the color for the border segment */ protected abstract void drawBorderLine(float x1, float y1, float x2, float y2, boolean horz, boolean startOrBefore, int style, Color col); /** {@inheritDoc} */ public void renderForeignObject(ForeignObject fo, Rectangle2D pos) { endTextObject(); Document doc = fo.getDocument(); String ns = fo.getNameSpace(); renderDocument(doc, ns, pos, fo.getForeignAttributes()); } /** * Establishes a new coordinate system with the given transformation matrix. * The current graphics state is saved and the new coordinate system is concatenated. * @param at the transformation matrix */ protected void establishTransformationMatrix(AffineTransform at) { saveGraphicsState(); concatenateTransformationMatrix(UnitConv.mptToPt(at)); } }