| /* |
| * 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.fop.area.Area; |
| import org.apache.fop.area.Block; |
| import org.apache.fop.area.BlockParent; |
| import org.apache.fop.area.BlockViewport; |
| import org.apache.fop.area.CTM; |
| 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.Viewport; |
| 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; |
| import org.apache.fop.util.QName; |
| |
| /** |
| * 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 { |
| |
| /** |
| * 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) { |
| /* using start-indent now |
| Integer spaceStart = (Integer) block.getTrait(Trait.SPACE_START); |
| if (spaceStart != null) { |
| startx += spaceStart.floatValue() / 1000f; |
| }*/ |
| float startx = getBlockTraitsStartX(block); |
| float starty = getBlockTraitsStartY(block); |
| float width = (block.getIPD() |
| + block.getBorderAndPaddingWidthStart() |
| + block.getBorderAndPaddingWidthEnd()) / 1000f; |
| float height = (block.getBPD() |
| + block.getBorderAndPaddingWidthBefore() |
| + block.getBorderAndPaddingWidthAfter()) / 1000f; |
| 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(); |
| if (region.getRegionReference().getRegionClass() == FO_REGION_BODY) { |
| currentBPPosition = region.getBorderAndPaddingWidthBefore(); |
| currentIPPosition = region.getBorderAndPaddingWidthStart(); |
| } |
| float startx = (float)(viewArea.getX() / 1000f); |
| float starty = (float)(viewArea.getY() / 1000f); |
| float width = (float)(viewArea.getWidth() / 1000f); |
| float height = (float)(viewArea.getHeight() / 1000f); |
| drawBackAndBorders(region, 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) { |
| // draw background then border |
| BorderProps bpsBefore = (BorderProps)area.getTrait(Trait.BORDER_BEFORE); |
| BorderProps bpsAfter = (BorderProps)area.getTrait(Trait.BORDER_AFTER); |
| BorderProps bpsStart = (BorderProps)area.getTrait(Trait.BORDER_START); |
| BorderProps bpsEnd = (BorderProps)area.getTrait(Trait.BORDER_END); |
| |
| Trait.Background back; |
| back = (Trait.Background)area.getTrait(Trait.BACKGROUND); |
| if (back != null) { |
| endTextObject(); |
| |
| //Calculate padding rectangle |
| float sx = startx; |
| float sy = starty; |
| float paddRectWidth = width; |
| float paddRectHeight = height; |
| if (bpsStart != null) { |
| sx += bpsStart.width / 1000f; |
| paddRectWidth -= bpsStart.width / 1000f; |
| } |
| if (bpsBefore != null) { |
| sy += bpsBefore.width / 1000f; |
| paddRectHeight -= bpsBefore.width / 1000f; |
| } |
| if (bpsEnd != null) { |
| paddRectWidth -= bpsEnd.width / 1000f; |
| } |
| if (bpsAfter != null) { |
| paddRectHeight -= bpsAfter.width / 1000f; |
| } |
| |
| if (back.getColor() != null) { |
| updateColor(back.getColor(), true); |
| fillRect(sx, sy, paddRectWidth, paddRectHeight); |
| } |
| if (back.getImageInfo() != null) { |
| ImageSize imageSize = back.getImageInfo().getSize(); |
| saveGraphicsState(); |
| clipRect(sx, sy, paddRectWidth, paddRectHeight); |
| int horzCount = (int)((paddRectWidth |
| * 1000 / imageSize.getWidthMpt()) + 1.0f); |
| int vertCount = (int)((paddRectHeight |
| * 1000 / imageSize.getHeightMpt()) + 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 * imageSize.getWidthMpt()), |
| sy - currentBPPosition |
| + (y * imageSize.getHeightMpt()), |
| imageSize.getWidthMpt(), |
| imageSize.getHeightMpt()); |
| drawImage(back.getURL(), pos); |
| } |
| } |
| restoreGraphicsState(); |
| } |
| } |
| |
| Rectangle2D.Float borderRect = new Rectangle2D.Float(startx, starty, width, height); |
| boolean hasBorder = (bpsBefore != null || bpsAfter != null |
| || bpsStart != null || bpsEnd != null); |
| if (hasBorder) { |
| drawBorders(borderRect, bpsBefore, bpsAfter, bpsStart, bpsEnd); |
| } |
| } |
| |
| private static final int BEFORE = 0; |
| private static final int END = 1; |
| private static final int AFTER = 2; |
| private static final int START = 3; |
| |
| /** |
| * Draws borders. |
| * @param borderRect the border rectangle |
| * @param bpsBefore the border specification on the before side |
| * @param bpsAfter the border specification on the after side |
| * @param bpsStart the border specification on the start side |
| * @param bpsEnd the border specification on the end side |
| * |
| * TODO: generalize each of the four conditions into using a parameterized drawBorder() |
| */ |
| protected void drawBorders(Rectangle2D.Float borderRect, |
| BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) { |
| boolean[] border = new boolean[] { |
| (bpsBefore != null), (bpsEnd != null), |
| (bpsAfter != null), (bpsStart != null)}; |
| float startx = borderRect.x; |
| float starty = borderRect.y; |
| float width = borderRect.width; |
| float height = borderRect.height; |
| float[] borderWidth = new float[] { |
| (border[BEFORE] ? bpsBefore.width / 1000f : 0.0f), |
| (border[END] ? bpsEnd.width / 1000f : 0.0f), |
| (border[AFTER] ? bpsAfter.width / 1000f : 0.0f), |
| (border[START] ? bpsStart.width / 1000f : 0.0f)}; |
| float[] clipw = new float[] { |
| BorderProps.getClippedWidth(bpsBefore) / 1000f, |
| BorderProps.getClippedWidth(bpsEnd) / 1000f, |
| BorderProps.getClippedWidth(bpsAfter) / 1000f, |
| BorderProps.getClippedWidth(bpsStart) / 1000f}; |
| starty += clipw[BEFORE]; |
| height -= clipw[BEFORE]; |
| height -= clipw[AFTER]; |
| startx += clipw[START]; |
| width -= clipw[START]; |
| width -= clipw[END]; |
| |
| boolean[] slant = new boolean[] { |
| (border[START] && border[BEFORE]), |
| (border[BEFORE] && border[END]), |
| (border[END] && border[AFTER]), |
| (border[AFTER] && border[START])}; |
| if (bpsBefore != null) { |
| endTextObject(); |
| |
| float sx1 = startx; |
| float sx2 = (slant[BEFORE] ? sx1 + borderWidth[START] - clipw[START] : sx1); |
| float ex1 = startx + width; |
| float ex2 = (slant[END] ? ex1 - borderWidth[END] + clipw[END] : ex1); |
| float outery = starty - clipw[BEFORE]; |
| float clipy = outery + clipw[BEFORE]; |
| float innery = outery + borderWidth[BEFORE]; |
| |
| saveGraphicsState(); |
| moveTo(sx1, clipy); |
| float sx1a = sx1; |
| float ex1a = ex1; |
| if (bpsBefore.mode == BorderProps.COLLAPSE_OUTER) { |
| if (bpsStart != null && bpsStart.mode == BorderProps.COLLAPSE_OUTER) { |
| sx1a -= clipw[START]; |
| } |
| if (bpsEnd != null && bpsEnd.mode == BorderProps.COLLAPSE_OUTER) { |
| ex1a += clipw[END]; |
| } |
| lineTo(sx1a, outery); |
| lineTo(ex1a, outery); |
| } |
| lineTo(ex1, clipy); |
| lineTo(ex2, innery); |
| lineTo(sx2, innery); |
| closePath(); |
| clip(); |
| drawBorderLine(sx1a, outery, ex1a, innery, true, true, |
| bpsBefore.style, bpsBefore.color); |
| restoreGraphicsState(); |
| } |
| if (bpsEnd != null) { |
| endTextObject(); |
| |
| float sy1 = starty; |
| float sy2 = (slant[END] ? sy1 + borderWidth[BEFORE] - clipw[BEFORE] : sy1); |
| float ey1 = starty + height; |
| float ey2 = (slant[AFTER] ? ey1 - borderWidth[AFTER] + clipw[AFTER] : ey1); |
| float outerx = startx + width + clipw[END]; |
| float clipx = outerx - clipw[END]; |
| float innerx = outerx - borderWidth[END]; |
| |
| saveGraphicsState(); |
| moveTo(clipx, sy1); |
| float sy1a = sy1; |
| float ey1a = ey1; |
| if (bpsEnd.mode == BorderProps.COLLAPSE_OUTER) { |
| if (bpsBefore != null && bpsBefore.mode == BorderProps.COLLAPSE_OUTER) { |
| sy1a -= clipw[BEFORE]; |
| } |
| if (bpsAfter != null && bpsAfter.mode == BorderProps.COLLAPSE_OUTER) { |
| ey1a += clipw[AFTER]; |
| } |
| lineTo(outerx, sy1a); |
| lineTo(outerx, ey1a); |
| } |
| lineTo(clipx, ey1); |
| lineTo(innerx, ey2); |
| lineTo(innerx, sy2); |
| closePath(); |
| clip(); |
| drawBorderLine(innerx, sy1a, outerx, ey1a, false, false, bpsEnd.style, bpsEnd.color); |
| restoreGraphicsState(); |
| } |
| if (bpsAfter != null) { |
| endTextObject(); |
| |
| float sx1 = startx; |
| float sx2 = (slant[START] ? sx1 + borderWidth[AFTER] - clipw[AFTER] : sx1); |
| float ex1 = startx + width; |
| float ex2 = (slant[AFTER] ? ex1 - borderWidth[END] + clipw[END] : ex1); |
| float outery = starty + height + clipw[AFTER]; |
| float clipy = outery - clipw[AFTER]; |
| float innery = outery - borderWidth[AFTER]; |
| |
| saveGraphicsState(); |
| moveTo(ex1, clipy); |
| float sx1a = sx1; |
| float ex1a = ex1; |
| if (bpsAfter.mode == BorderProps.COLLAPSE_OUTER) { |
| if (bpsStart != null && bpsStart.mode == BorderProps.COLLAPSE_OUTER) { |
| sx1a -= clipw[START]; |
| } |
| if (bpsEnd != null && bpsEnd.mode == BorderProps.COLLAPSE_OUTER) { |
| ex1a += clipw[END]; |
| } |
| lineTo(ex1a, outery); |
| lineTo(sx1a, outery); |
| } |
| lineTo(sx1, clipy); |
| lineTo(sx2, innery); |
| lineTo(ex2, innery); |
| closePath(); |
| clip(); |
| drawBorderLine(sx1a, innery, ex1a, outery, true, false, bpsAfter.style, bpsAfter.color); |
| restoreGraphicsState(); |
| } |
| if (bpsStart != null) { |
| endTextObject(); |
| |
| float sy1 = starty; |
| float sy2 = (slant[START] ? sy1 + borderWidth[BEFORE] - clipw[BEFORE] : sy1); |
| float ey1 = sy1 + height; |
| float ey2 = (slant[START] ? ey1 - borderWidth[AFTER] + clipw[AFTER] : ey1); |
| float outerx = startx - clipw[START]; |
| float clipx = outerx + clipw[START]; |
| float innerx = outerx + borderWidth[START]; |
| |
| saveGraphicsState(); |
| moveTo(clipx, ey1); |
| float sy1a = sy1; |
| float ey1a = ey1; |
| if (bpsStart.mode == BorderProps.COLLAPSE_OUTER) { |
| if (bpsBefore != null && bpsBefore.mode == BorderProps.COLLAPSE_OUTER) { |
| sy1a -= clipw[BEFORE]; |
| } |
| if (bpsAfter != null && bpsAfter.mode == BorderProps.COLLAPSE_OUTER) { |
| ey1a += clipw[AFTER]; |
| } |
| lineTo(outerx, ey1a); |
| lineTo(outerx, sy1a); |
| } |
| lineTo(clipx, sy1); |
| lineTo(innerx, sy2); |
| lineTo(innerx, ey2); |
| closePath(); |
| clip(); |
| drawBorderLine(outerx, sy1a, innerx, ey1a, false, true, bpsStart.style, bpsStart.color); |
| restoreGraphicsState(); |
| } |
| } |
| |
| protected java.awt.geom.Point2D getInlineAreaPoint(InlineArea area) { |
| float startx = currentIPPosition / 1000f; |
| float starty = (currentBPPosition + area.getOffset() |
| + area.getBorderAndPaddingWidthBefore()) / 1000f; |
| return new java.awt.geom.Point2D.Float(startx, starty); |
| } |
| |
| // protected float getInlineAreaStartX(InlineArea area) { |
| // return currentIPPosition / 1000f; |
| // } |
| // |
| // protected float getInlineAreaStartY(InlineArea area) { |
| // return (currentBPPosition + area.getOffset() |
| // + area.getBorderAndPaddingWidthBefore()) / 1000f; |
| // } |
| |
| /** |
| * 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) { |
| java.awt.geom.Point2D p = getInlineAreaPoint(area); |
| // float startx = (float)p.getX(); |
| // float starty = (float)p.getY(); |
| float startx = currentIPPosition / 1000f; |
| float starty = (currentBPPosition + area.getOffset() |
| + area.getBorderAndPaddingWidthBefore()) / 1000f; |
| float width = area.getIPD() / 1000f; |
| float height = area.getBPD() / 1000f; |
| float borderPaddingStart = area.getBorderAndPaddingWidthStart() / 1000f; |
| float bpwidth = borderPaddingStart |
| + (area.getBorderAndPaddingWidthEnd() / 1000f); |
| float bpheight = starty |
| + (area.getBorderAndPaddingWidthAfter() / 1000f); |
| |
| if (height != 0.0f || bpheight != 0.0f && bpwidth != 0.0f) { |
| drawBackAndBorders(area, startx, starty, width + bpwidth, height + bpheight); |
| } |
| } |
| |
| /** |
| * Returns the position transform. |
| * @param bp The block parent |
| * @return the position transform |
| */ |
| protected AffineTransform getPositionTransform(BlockParent bp) { |
| AffineTransform transform = new AffineTransform(); |
| transform.translate(bp.getXOffset(), bp.getYOffset()); |
| |
| //"left/"top" (bv.getX/YOffset()) specify the position of the content rectangle |
| transform.translate( |
| -bp.getBorderAndPaddingWidthStart(), |
| -bp.getBorderAndPaddingWidthBefore()); |
| return transform; |
| } |
| |
| protected float getBlockTraitsStartX(Block block) { |
| return (currentIPPosition + block.getStartIndent() |
| - block.getBorderAndPaddingWidthStart() ) / 1000f; |
| } |
| |
| protected float getBlockTraitsStartY(Block block) { |
| return currentBPPosition / 1000f; |
| } |
| |
| |
| /** |
| * Returns the starting X position for back and borders |
| * @param bv The block viewport |
| * @return the starting X position |
| */ |
| protected float getBackAndBordersStartX(BlockViewport bv) { |
| return 0; |
| } |
| |
| /** |
| * Returns the starting Y position for back and borders |
| * @param bv The block viewport |
| * @return the starting Y position |
| */ |
| protected float getBackAndBordersStartY(BlockViewport bv) { |
| return 0; |
| } |
| |
| private 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; |
| |
| if (bv.getPositioning() == Block.ABSOLUTE |
| || bv.getPositioning() == 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 (bv.getPositioning() == Block.FIXED) { |
| breakOutList = breakOutOfStateStack(); |
| } |
| |
| AffineTransform positionTransform = getPositionTransform(bv); |
| |
| //Free transformation for the block-container viewport |
| String transf = bv.getForeignAttributeValue(FOX_TRANSFORM); |
| if (transf != null) { |
| AffineTransform freeTransform = AWTTransformProducer.createAffineTransform(transf); |
| positionTransform.concatenate(freeTransform); |
| } |
| |
| saveGraphicsState(); |
| //Viewport position |
| concatenateTransformationMatrix(mptToPt(positionTransform)); |
| |
| //This is the content-rect |
| float width = (float)bv.getIPD() / 1000f; |
| float height = (float)bv.getBPD() / 1000f; |
| |
| //Background and borders |
| float bpwidth |
| = (bv.getBorderAndPaddingWidthStart() |
| + bv.getBorderAndPaddingWidthEnd()) / 1000f; |
| float bpheight |
| = (bv.getBorderAndPaddingWidthBefore() |
| + bv.getBorderAndPaddingWidthAfter()) / 1000f; |
| |
| drawBackAndBorders(bv, 0/*getBackAndBordersStartX(bv)*/, /*getBackAndBordersStartY(bv)*/0, |
| width + bpwidth, height + bpheight); |
| |
| //Shift to content rectangle after border painting |
| AffineTransform contentRectTransform = new AffineTransform(); |
| contentRectTransform.translate( |
| bv.getBorderAndPaddingWidthStart(), |
| bv.getBorderAndPaddingWidthBefore()); |
| concatenateTransformationMatrix(mptToPt(contentRectTransform)); |
| |
| //Clipping |
| if (bv.getClip()) { |
| clipRect(0f, 0f, width, height); |
| } |
| |
| saveGraphicsState(); |
| //Set up coordinate system for content rectangle |
| AffineTransform contentTransform = bv.getCTM().toAffineTransform(); |
| concatenateTransformationMatrix(mptToPt(contentTransform)); |
| |
| currentIPPosition = 0; |
| currentBPPosition = 0; |
| renderBlocks(bv, children); |
| |
| restoreGraphicsState(); |
| restoreGraphicsState(); |
| |
| if (breakOutList != null) { |
| restoreStateStackAfterBreakOut(breakOutList); |
| } |
| |
| currentIPPosition = saveIP; |
| currentBPPosition = saveBP; |
| } else { |
| // bv.getPositioning() == Block.STACK || |
| // by.getPositioning() == Block.RELATIVE |
| |
| 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 ctm = tempctm.multiply(bv.getCTM()); |
| |
| //Now adjust for border/padding |
| currentBPPosition += bv.getBorderAndPaddingWidthBefore(); |
| |
| Rectangle2D clippingRect = null; |
| if (bv.getClip()) { |
| 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 += (int)(bv.getAllocBPD()); |
| } |
| } |
| |
| /** |
| * 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 renderViewport(Viewport viewport) { |
| float x = currentIPPosition / 1000f; |
| float y = (currentBPPosition + viewport.getOffset()) / 1000f; |
| float width = viewport.getIPD() / 1000f; |
| float height = viewport.getBPD() / 1000f; |
| // TODO: Calculate the border rect correctly. |
| float borderPaddingStart = viewport.getBorderAndPaddingWidthStart() / 1000f; |
| float borderPaddingBefore = viewport.getBorderAndPaddingWidthBefore() / 1000f; |
| float bpwidth = borderPaddingStart |
| + (viewport.getBorderAndPaddingWidthEnd() / 1000f); |
| float bpheight = borderPaddingBefore |
| + (viewport.getBorderAndPaddingWidthAfter() / 1000f); |
| |
| drawBackAndBorders(viewport, x, y, width + bpwidth, height + bpheight); |
| |
| if (viewport.getClip()) { |
| saveGraphicsState(); |
| |
| clipRect(x + borderPaddingStart, y + borderPaddingBefore, width, height); |
| } |
| super.renderViewport(viewport); |
| |
| if (viewport.getClip()) { |
| 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()); |
| } |
| |
| } |
