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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.
- ==================================================================== */
-
- package org.apache.poi.sl.draw;
-
- import java.awt.Graphics2D;
- import java.awt.geom.AffineTransform;
- import java.awt.geom.Rectangle2D;
- import java.awt.image.BufferedImage;
- import java.util.Iterator;
-
- import org.apache.poi.sl.usermodel.Insets2D;
- import org.apache.poi.sl.usermodel.PlaceableShape;
- import org.apache.poi.sl.usermodel.ShapeContainer;
- import org.apache.poi.sl.usermodel.TextParagraph;
- import org.apache.poi.sl.usermodel.TextParagraph.BulletStyle;
- import org.apache.poi.sl.usermodel.TextRun;
- import org.apache.poi.sl.usermodel.TextShape;
- import org.apache.poi.sl.usermodel.TextShape.TextDirection;
-
- public class DrawTextShape extends DrawSimpleShape {
-
- public DrawTextShape(TextShape<?,?> shape) {
- super(shape);
- }
-
- @Override
- public void drawContent(Graphics2D graphics) {
- DrawFactory.getInstance(graphics).fixFonts(graphics);
-
- TextShape<?,?> s = getShape();
-
- Rectangle2D anchor = DrawShape.getAnchor(graphics, s);
- Insets2D insets = s.getInsets();
- double x = anchor.getX() + insets.left;
- double y = anchor.getY();
-
- // remember the initial transform
- AffineTransform tx = graphics.getTransform();
-
- // Transform of text in flipped shapes is special.
- // At this point the flip and rotation transform is already applied
- // (see DrawShape#applyTransform ), but we need to restore it to avoid painting "upside down".
- // See Bugzilla 54210.
-
- boolean vertFlip = s.getFlipVertical();
- boolean horzFlip = s.getFlipHorizontal();
- ShapeContainer<?,?> sc = s.getParent();
- while (sc instanceof PlaceableShape) {
- PlaceableShape<?,?> ps = (PlaceableShape<?,?>)sc;
- vertFlip ^= ps.getFlipVertical();
- horzFlip ^= ps.getFlipHorizontal();
- sc = ps.getParent();
- }
-
- // Horizontal flipping applies only to shape outline and not to the text in the shape.
- // Applying flip second time restores the original not-flipped transform
- if (horzFlip ^ vertFlip) {
- final double ax = anchor.getX();
- final double ay = anchor.getY();
- graphics.translate(ax + anchor.getWidth(), ay);
- graphics.scale(-1, 1);
- graphics.translate(-ax, -ay);
- }
-
- Double textRot = s.getTextRotation();
- if (textRot != null && textRot != 0) {
- final double cx = anchor.getCenterX();
- final double cy = anchor.getCenterY();
- graphics.translate(cx, cy);
- graphics.rotate(Math.toRadians(textRot));
- graphics.translate(-cx, -cy);
- }
-
- // first dry-run to calculate the total height of the text
- double textHeight;
-
- switch (s.getVerticalAlignment()){
- default:
- case TOP:
- y += insets.top;
- break;
- case BOTTOM:
- textHeight = getTextHeight(graphics);
- y += anchor.getHeight() - textHeight - insets.bottom;
- break;
- case MIDDLE:
- textHeight = getTextHeight(graphics);
- double delta = anchor.getHeight() - textHeight - insets.top - insets.bottom;
- y += insets.top + delta/2;
- break;
- }
-
- TextDirection textDir = s.getTextDirection();
- if (textDir == TextDirection.VERTICAL || textDir == TextDirection.VERTICAL_270) {
- final double deg = (textDir == TextDirection.VERTICAL) ? 90 : 270;
- final double cx = anchor.getCenterX();
- final double cy = anchor.getCenterY();
- graphics.translate(cx, cy);
- graphics.rotate(Math.toRadians(deg));
- graphics.translate(-cx, -cy);
-
- // old top/left edge is now bottom/left or top/right - as we operate on the already
- // rotated drawing context, both verticals can be moved in the same direction
- final double w = anchor.getWidth();
- final double h = anchor.getHeight();
- final double dx = (w-h)/2d;
- graphics.translate(dx,-dx);
- }
-
- drawParagraphs(graphics, x, y);
-
- // restore the transform
- graphics.setTransform(tx);
- }
-
- /**
- * paint the paragraphs starting from top left (x,y)
- *
- * @return the vertical advance, i.e. the cumulative space occupied by the text
- */
- public double drawParagraphs(Graphics2D graphics, double x, double y) {
- DrawFactory fact = DrawFactory.getInstance(graphics);
-
- double y0 = y;
- Iterator<? extends TextParagraph<?,?,? extends TextRun>> paragraphs = getShape().iterator();
-
- boolean isFirstLine = true;
- for (int autoNbrIdx=0; paragraphs.hasNext(); autoNbrIdx++){
- TextParagraph<?,?,? extends TextRun> p = paragraphs.next();
- DrawTextParagraph dp = fact.getDrawable(p);
- BulletStyle bs = p.getBulletStyle();
- if (bs == null || bs.getAutoNumberingScheme() == null) {
- autoNbrIdx = -1;
- } else {
- Integer startAt = bs.getAutoNumberingStartAt();
- if (startAt == null) startAt = 1;
- // TODO: handle reset auto number indexes
- if (startAt > autoNbrIdx) autoNbrIdx = startAt;
- }
- dp.setAutoNumberingIdx(autoNbrIdx);
- dp.breakText(graphics);
-
- if (isFirstLine) {
- y += dp.getFirstLineLeading();
- } else {
- // the amount of vertical white space before the paragraph
- Double spaceBefore = p.getSpaceBefore();
- if (spaceBefore == null) spaceBefore = 0d;
- if(spaceBefore > 0) {
- // positive value means percentage spacing of the height of the first line, e.g.
- // the higher the first line, the bigger the space before the paragraph
- y += spaceBefore*0.01*dp.getFirstLineHeight();
- } else {
- // negative value means the absolute spacing in points
- y += -spaceBefore;
- }
- }
- isFirstLine = false;
-
- dp.setPosition(x, y);
- dp.draw(graphics);
- y += dp.getY();
-
- if (paragraphs.hasNext()) {
- Double spaceAfter = p.getSpaceAfter();
- if (spaceAfter == null) spaceAfter = 0d;
- if(spaceAfter > 0) {
- // positive value means percentage spacing of the height of the last line, e.g.
- // the higher the last line, the bigger the space after the paragraph
- y += spaceAfter*0.01*dp.getLastLineHeight();
- } else {
- // negative value means the absolute spacing in points
- y += -spaceAfter;
- }
- }
- }
- return y - y0;
- }
-
- /**
- * Compute the cumulative height occupied by the text
- *
- * @return the height in points
- */
- public double getTextHeight() {
- return getTextHeight(null);
- }
-
- /**
- * Compute the cumulative height occupied by the text
- *
- * @param oldGraphics the graphics context, which properties are to be copied, may be null
- * @return the height in points
- */
- public double getTextHeight(Graphics2D oldGraphics) {
- // dry-run in a 1x1 image and return the vertical advance
- BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
- Graphics2D graphics = img.createGraphics();
- if (oldGraphics != null) {
- graphics.addRenderingHints(oldGraphics.getRenderingHints());
- graphics.setTransform(oldGraphics.getTransform());
- }
- DrawFactory.getInstance(graphics).fixFonts(graphics);
- return drawParagraphs(graphics, 0, 0);
- }
-
- @Override
- protected TextShape<?,? extends TextParagraph<?,?,? extends TextRun>> getShape() {
- return (TextShape<?,? extends TextParagraph<?,?,? extends TextRun>>)shape;
- }
- }
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