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/*
This file is part of the iText (R) project.
Copyright (c) 1998-2023 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.colors.DeviceCmyk;
import com.itextpdf.kernel.colors.DeviceGray;
import com.itextpdf.kernel.colors.DeviceRgb;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
/**
* Represents a border that is displayed using a 3D effect.
*/
public abstract class Border3D extends Border {
/**
* Predefined gray {@link DeviceRgb RGB-color}
*/
private static final DeviceRgb GRAY = new DeviceRgb(212, 208, 200);
/**
* Creates a Border3D instance with the specified width. Also sets the color to gray.
*
* @param width with of the border
*/
protected Border3D(float width) {
this(GRAY, width);
}
/**
* Creates a Border3D instance with the specified width and color.
*
* @param color color of the border
* @param width width of the border
*/
protected Border3D(DeviceRgb color, float width) {
super(color, width);
}
/**
* Creates a Border3D instance with the specified width and color.
*
* @param color color of the border
* @param width width of the border
*/
protected Border3D(DeviceCmyk color, float width) {
super(color, width);
}
/**
* Creates a Border3D instance with the specified width and color.
*
* @param color color of the border
* @param width width of the border
*/
protected Border3D(DeviceGray color, float width) {
super(color, width);
}
/**
* Creates a Border3D instance with the specified width, color and opacity.
*
* @param color color of the border
* @param width width of the border
* @param opacity opacity of the border
*/
protected Border3D(DeviceRgb color, float width, float opacity) {
super(color, width, opacity);
}
/**
* Creates a Border3D instance with the specified width, color and opacity.
*
* @param color color of the border
* @param width width of the border
* @param opacity opacity of the border
*/
protected Border3D(DeviceCmyk color, float width, float opacity) {
super(color, width, opacity);
}
/**
* Creates a Border3D instance with the specified width, color and opacity.
*
* @param color color of the border
* @param width width of the border
* @param opacity opacity of the border
*/
protected Border3D(DeviceGray color, float width, float opacity) {
super(color, width, opacity);
}
/**
* {@inheritDoc}
*/
@Override
public void draw(PdfCanvas canvas, float x1, float y1, float x2, float y2, Side defaultSide, float borderWidthBefore, float borderWidthAfter) {
float x3 = 0, y3 = 0;
float x4 = 0, y4 = 0;
float widthHalf = width / 2;
float halfOfWidthBefore = borderWidthBefore / 2;
float halfOfWidthAfter = borderWidthAfter / 2;
Border.Side borderSide = getBorderSide(x1, y1, x2, y2, defaultSide);
switch (borderSide) {
case TOP:
x3 = x2 + halfOfWidthAfter;
y3 = y2 + widthHalf;
x4 = x1 - halfOfWidthBefore;
y4 = y1 + widthHalf;
break;
case RIGHT:
x3 = x2 + widthHalf;
y3 = y2 - halfOfWidthAfter;
x4 = x1 + widthHalf;
y4 = y1 + halfOfWidthBefore;
break;
case BOTTOM:
x3 = x2 - halfOfWidthAfter;
y3 = y2 - widthHalf;
x4 = x1 + halfOfWidthBefore;
y4 = y1 - widthHalf;
break;
case LEFT:
x3 = x2 - widthHalf;
y3 = y2 + halfOfWidthAfter;
x4 = x1 - widthHalf;
y4 = y1 - halfOfWidthBefore;
break;
}
canvas.saveState();
transparentColor.applyFillTransparency(canvas);
setInnerHalfColor(canvas, borderSide);
canvas.moveTo(x1, y1).lineTo(x2, y2).lineTo(x3, y3).lineTo(x4, y4).lineTo(x1, y1).fill();
switch (borderSide) {
case TOP:
x2 += borderWidthAfter;
y2 += width;
x1 -= borderWidthBefore;
y1 += width;
break;
case RIGHT:
x2 += width;
y2 -= borderWidthAfter;
x1 += width;
y1 += borderWidthBefore;
break;
case BOTTOM:
x2 -= borderWidthAfter;
y2 -= width;
x1 += borderWidthBefore;
y1 -= width;
break;
case LEFT:
x2 -= width;
y2 += borderWidthAfter;
x1 -= width;
y1 -= borderWidthBefore;
break;
}
setOuterHalfColor(canvas, borderSide);
canvas.moveTo(x1, y1).lineTo(x2, y2).lineTo(x3, y3).lineTo(x4, y4).lineTo(x1, y1).fill();
canvas.restoreState();
}
/**
* {@inheritDoc}
*/
@Override
public void drawCellBorder(PdfCanvas canvas, float x1, float y1, float x2, float y2, Side defaultSide) {
canvas.
saveState().
setStrokeColor(transparentColor.getColor());
transparentColor.applyStrokeTransparency(canvas);
canvas.
setLineWidth(width).
moveTo(x1, y1).
lineTo(x2, y2).
stroke().
restoreState();
}
/**
* Makes the {@link Border#transparentColor} color of the border darker and returns the result
* @return The darker color
*/
protected Color getDarkerColor() {
Color color = this.transparentColor.getColor();
if (color instanceof DeviceRgb)
return DeviceRgb.makeDarker((DeviceRgb) color);
else if (color instanceof DeviceCmyk)
return DeviceCmyk.makeDarker((DeviceCmyk) color);
else if (color instanceof DeviceGray)
return DeviceGray.makeDarker((DeviceGray) color);
return color;
}
/**
* Sets the fill color for the inner half of {@link Border3D 3D Border}
*
* @param canvas PdfCanvas the color will be applied on
* @param side the {@link Border.Side side} the color will be applied on
*/
protected abstract void setInnerHalfColor(PdfCanvas canvas, Side side);
/**
* Sets the fill color for the outer half of {@link Border3D 3D Border}
*
* @param canvas PdfCanvas the color will be applied on
* @param side the {@link Border.Side side} the color will be applied on
*/
protected abstract void setOuterHalfColor(PdfCanvas canvas, Side side);
}
