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/*
This file is part of the iText (R) project.
Copyright (c) 1998-2024 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see .
*/
package com.itextpdf.layout.borders;
import com.itextpdf.kernel.colors.Color;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
/**
* Draws a dotted border around the element it has been set to. Do note that this border draw square dots,
* if you want to draw round dots, see {@link RoundDotsBorder}.
*/
public class DottedBorder extends Border {
/**
* The modifier to be applied on the width to have the initial gap size
*/
private static final float GAP_MODIFIER = 1.5f;
/**
* Creates a DottedBorder instance with the specified width. The color is set to the default: black.
*
* @param width width of the border
*/
public DottedBorder(float width) {
super(width);
}
/**
* Creates a DottedBorder instance with the specified width and color.
*
* @param color color of the border
* @param width width of the border
*/
public DottedBorder(Color color, float width) {
super(color, width);
}
/**
* Creates a DottedBorder with the specified width, color and opacity.
*
* @param color color of the border
* @param width width of the border
* @param opacity width of the border
*/
public DottedBorder(Color color, float width, float opacity) {
super(color, width, opacity);
}
/**
* {@inheritDoc}
*/
@Override
public int getType() {
return Border.DOTTED;
}
/**
* {@inheritDoc}
*/
@Override
public void draw(PdfCanvas canvas, float x1, float y1, float x2, float y2, Side defaultSide, float borderWidthBefore, float borderWidthAfter) {
float initialGap = width * GAP_MODIFIER;
float dx = x2 - x1;
float dy = y2 - y1;
double borderLength = Math.sqrt(dx * dx + dy * dy);
float adjustedGap = super.getDotsGap(borderLength, initialGap + width);
if (adjustedGap > width) {
adjustedGap -= width;
}
float[] startingPoints = getStartingPointsForBorderSide(x1, y1, x2, y2, defaultSide);
x1 = startingPoints[0];
y1 = startingPoints[1];
x2 = startingPoints[2];
y2 = startingPoints[3];
canvas
.saveState()
.setLineWidth(width)
.setStrokeColor(transparentColor.getColor());
transparentColor.applyStrokeTransparency(canvas);
canvas
.setLineDash(width, adjustedGap, width + adjustedGap / 2)
.moveTo(x1, y1).lineTo(x2, y2)
.stroke()
.restoreState();
}
/**
* {@inheritDoc}
*/
@Override
public void draw(PdfCanvas canvas, float x1, float y1, float x2, float y2, float horizontalRadius1, float verticalRadius1, float horizontalRadius2, float verticalRadius2, Side defaultSide, float borderWidthBefore, float borderWidthAfter) {
float initialGap = width * GAP_MODIFIER;
float dx = x2 - x1;
float dy = y2 - y1;
double borderLength = Math.sqrt(dx * dx + dy * dy);
float adjustedGap = super.getDotsGap(borderLength, initialGap);
if (adjustedGap > width) {
adjustedGap -= width;
}
canvas
.saveState()
.setLineWidth(width)
.setStrokeColor(transparentColor.getColor());
transparentColor.applyStrokeTransparency(canvas);
canvas.setLineDash(width, adjustedGap, width + adjustedGap / 2);
Rectangle boundingRectangle = new Rectangle(x1, y1, x2 - x1, y2 - y1);
float[] horizontalRadii = new float[]{horizontalRadius1, horizontalRadius2};
float[] verticalRadii = new float[]{verticalRadius1, verticalRadius2};
drawDiscontinuousBorders(canvas, boundingRectangle, horizontalRadii, verticalRadii, defaultSide, borderWidthBefore, borderWidthAfter);
}
/**
* {@inheritDoc}
*/
@Override
public void drawCellBorder(PdfCanvas canvas, float x1, float y1, float x2, float y2, Side defaultSide) {
float initialGap = width * GAP_MODIFIER;
float dx = x2 - x1;
float dy = y2 - y1;
double borderLength = Math.sqrt(dx * dx + dy * dy);
float adjustedGap = super.getDotsGap(borderLength, initialGap + width);
if (adjustedGap > width) {
adjustedGap -= width;
}
canvas
.saveState()
.setLineWidth(width)
.setStrokeColor(transparentColor.getColor());
transparentColor.applyStrokeTransparency(canvas);
canvas
.setLineDash(width, adjustedGap, width + adjustedGap / 2)
.moveTo(x1, y1)
.lineTo(x2, y2)
.stroke()
.restoreState();
}
}
