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- /*
- * 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.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.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;
-
- /**
- * 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) {
- int borderPaddingStart = block.getBorderAndPaddingWidthStart();
- int borderPaddingBefore = block.getBorderAndPaddingWidthBefore();
-
- float startx = currentIPPosition / 1000f;
- float starty = currentBPPosition / 1000f;
- float width = block.getIPD() / 1000f;
- float height = block.getBPD() / 1000f;
-
- /* using start-indent now
- Integer spaceStart = (Integer) block.getTrait(Trait.SPACE_START);
- if (spaceStart != null) {
- startx += spaceStart.floatValue() / 1000f;
- }*/
- startx += block.getStartIndent() / 1000f;
- startx -= block.getBorderAndPaddingWidthStart() / 1000f;
-
- width += borderPaddingStart / 1000f;
- width += block.getBorderAndPaddingWidthEnd() / 1000f;
- height += borderPaddingBefore / 1000f;
- height += 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();
- 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();
- currentIPPosition = referenceArea.getBorderAndPaddingWidthStart();
- // 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);
-
- drawBackground(startx, starty, width, height,
- (Trait.Background) backgroundArea.getTrait(Trait.BACKGROUND),
- bpsBefore, bpsAfter, bpsStart, bpsEnd);
- drawBorders(startx, starty, width, height,
- bpsBefore, bpsAfter, bpsStart, bpsEnd);
- }
-
- /**
- * 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
- */
- protected void drawBackground(float startx, float starty,
- float width, float height,
- Trait.Background back,
- BorderProps bpsBefore, BorderProps bpsAfter,
- BorderProps bpsStart, BorderProps bpsEnd) {
- 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();
- }
- }
- }
-
- /**
- * 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-before traits
- * @param bpsAfter the border-after traits
- * @param bpsStart the border-start traits
- * @param bpsEnd the border-end traits
- */
- protected void drawBorders(float startx, float starty,
- float width, float height,
- BorderProps bpsBefore, BorderProps bpsAfter,
- BorderProps bpsStart, BorderProps bpsEnd) {
- Rectangle2D.Float borderRect = new Rectangle2D.Float(startx, starty, width, height);
- 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
- */
- protected void drawBorders(Rectangle2D.Float borderRect,
- BorderProps bpsBefore, BorderProps bpsAfter, BorderProps bpsStart, BorderProps bpsEnd) {
- //TODO generalize each of the four conditions into using a parameterized drawBorder()
- 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[START] - clipw[START] : 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[BEFORE] ? 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();
- }
- }
-
- /**
- * 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 borderPaddingBefore = area.getBorderAndPaddingWidthBefore() / 1000f;
- float bpwidth = borderPaddingStart
- + (area.getBorderAndPaddingWidthEnd() / 1000f);
- float bpheight = borderPaddingBefore
- + (area.getBorderAndPaddingWidthAfter() / 1000f);
-
- float height = area.getBPD() / 1000f;
- if (height != 0.0f || bpheight != 0.0f && bpwidth != 0.0f) {
- float x = currentIPPosition / 1000f;
- float y = (currentBPPosition + area.getOffset()) / 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 borderPaddingStart = bv.getBorderAndPaddingWidthStart();
-
- //"left/"top" (bv.getX/YOffset()) specify the position of the content rectangle
- positionTransform.translate(-borderPaddingStart, -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 + bv.getBorderAndPaddingWidthEnd()) / 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();
- contentRectTransform.translate(borderPaddingStart, borderPaddingBefore);
-
- if (!contentRectTransform.isIdentity()) {
- establishTransformationMatrix(contentRectTransform);
- }
-
- //Clipping
- if (bv.getClip()) {
- 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;
-
- 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 += (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 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());
- }
-
- /**
- * Establishes a new coordinate system with the given transformation matrix.
- * The current graphics state is saved and the new coordinate system is concatenated.
- * @param block
- *
- * @param at the transformation matrix
- */
- protected void establishTransformationMatrix(AffineTransform at) {
- saveGraphicsState();
- concatenateTransformationMatrix(UnitConv.mptToPt(at));
- }
-
- }
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