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• PaintUtil.java

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com.github.weisj.darklaf.graphics.PaintUtil Maven / Gradle / Ivy

/*
 * MIT License
 *
 * Copyright (c) 2020 Jannis Weis
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package com.github.weisj.darklaf.graphics;

import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Path2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;

import com.github.weisj.darklaf.util.Scale;

public class PaintUtil {

    public static final Color TRANSPARENT_COLOR = new Color(0x0, true);
    private static AlphaComposite glowComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f);
    private static AlphaComposite dropComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.8f);
    private static AlphaComposite shadowComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.1f);
    private static Color errorGlow;
    private static Color errorFocusGlow;
    private static Color focusGlow;
    private static Color focusInactiveGlow;
    private static Color warningGlow;

    private static final RoundRectangle2D roundRect = new RoundRectangle2D.Double();

    public static void setGlowOpacity(final float alpha) {
        glowComposite = glowComposite.derive(alpha);
    }

    public static void setShadowOpacity(final float alpha) {
        shadowComposite = shadowComposite.derive(alpha);
    }

    public static void setDropOpacity(final float alpha) {
        dropComposite = dropComposite.derive(alpha);
    }

    public static AlphaComposite getDropComposite() {
        return dropComposite;
    }

    public static AlphaComposite getShadowComposite() {
        return shadowComposite;
    }

    public static AlphaComposite getGlowComposite() {
        return glowComposite;
    }

    public static void setErrorGlow(final Color errorGlow) {
        PaintUtil.errorGlow = errorGlow;
    }

    public static void setErrorFocusGlow(final Color errorFocusGlow) {
        PaintUtil.errorFocusGlow = errorFocusGlow;
    }

    public static void setFocusGlow(final Color focusGlow) {
        PaintUtil.focusGlow = focusGlow;
    }

    public static void setFocusInactiveGlow(final Color focusInactiveGlow) {
        PaintUtil.focusInactiveGlow = focusInactiveGlow;
    }

    public static void setWarningGlow(final Color warningGlow) {
        PaintUtil.warningGlow = warningGlow;
    }

    public static Color getErrorGlow() {
        return errorGlow;
    }

    public static Color getErrorFocusGlow() {
        return errorFocusGlow;
    }

    public static Color getFocusGlow() {
        return focusGlow;
    }

    public static Color getFocusInactiveGlow() {
        return focusInactiveGlow;
    }

    public static Color getWarningGlow() {
        return warningGlow;
    }

    private static void doPaint(final Graphics2D g, final float width, final float height, final float arc,
            final float bw, final boolean inside) {
        GraphicsContext context = GraphicsUtil.setupStrokePainting(g);
        Shape outerRect;
        Shape innerRect;
        if (Scale.equalWithError(arc, 0)) {
            outerRect = new Rectangle2D.Float(0, 0, width, height);
            innerRect = new Rectangle2D.Float(bw, bw, width - 2 * bw, height - 2 * bw);
        } else {
            float outerArc = inside ? arc : arc + bw;
            float innerArc = inside ? arc - bw : arc;
            outerRect = new RoundRectangle2D.Float(0, 0, width, height, outerArc, outerArc);
            innerRect = new RoundRectangle2D.Float(bw, bw, width - 2 * bw, height - 2 * bw, innerArc, innerArc);
        }
        Path2D path = new Path2D.Float(Path2D.WIND_EVEN_ODD);
        path.append(outerRect, false);
        path.append(innerRect, false);
        g.fill(path);
        context.restore();
    }

    public static void paintFocusBorder(final Graphics2D g, final int width, final int height, final float arc,
            final float bw) {
        paintFocusBorder(g, width, height, arc, bw, true);
    }

    public static void paintFocusBorder(final Graphics2D g, final int width, final int height, final float arc,
            final float bw, final boolean active) {
        GraphicsContext config = new GraphicsContext(g);
        g.setComposite(PaintUtil.glowComposite);
        paintOutlineBorder(g, width, height, arc, bw, active, Outline.focus);
        config.restore();
    }

    public static void paintOutlineBorder(final Graphics2D g, final int width, final int height, final float arc,
            final float bw, final boolean hasFocus, final Outline type) {
        paintOutlineBorder(g, width, height, arc, bw, hasFocus, type, true);
    }

    public static void paintOutlineBorder(final Graphics2D g, final int width, final int height, final float arc,
            final float bw, final boolean hasFocus, final Outline type, final boolean withLineBorder) {
        type.setGraphicsColor(g, hasFocus);
        doPaint(g, width, height, arc, withLineBorder ? bw + getStrokeWidth(g) : bw, false);
    }

    public static void fillFocusRect(final Graphics2D g, final int x, final int y, final int width, final int height) {
        fillFocusRect(g, x, y, width, height, true);
    }

    public static void fillFocusRect(final Graphics2D g, final int x, final int y, final int width, final int height,
            final boolean active) {
        GraphicsContext config = new GraphicsContext(g);
        g.setComposite(PaintUtil.glowComposite);
        Outline.focus.setGraphicsColor(g, active);
        g.fillRect(x, y, width, height);
        config.restore();
    }

    public static void paintFocusOval(final Graphics2D g, final int x, final int y, final int width, final int height,
            final int bw) {
        paintFocusOval(g, (float) x, (float) y, (float) width, (float) height, (float) bw);
    }

    public static void paintFocusOval(final Graphics2D g, final float x, final float y, final float width,
            final float height, final float bw) {
        paintFocusOval(g, x, y, width, height, true, bw);
    }

    public static void paintFocusOval(final Graphics2D g, final float x, final float y, final float width,
            final float height, final boolean active, final float bw) {
        GraphicsContext config = new GraphicsContext(g);
        g.setComposite(PaintUtil.glowComposite);
        Outline.focus.setGraphicsColor(g, active);

        Path2D shape = new Path2D.Float(Path2D.WIND_EVEN_ODD);
        shape.append(new Ellipse2D.Float(x - bw, y - bw, width + bw * 2, height + bw * 2), false);
        shape.append(new Ellipse2D.Float(x, y, width, height), false);
        g.fill(shape);
        config.restore();
    }

    public static float getStrokeWidth(final Graphics2D g) {
        Stroke stroke = g.getStroke();
        return stroke instanceof BasicStroke ? ((BasicStroke) stroke).getLineWidth() : 1f;
    }

    public static void paintLineBorder(final Graphics2D g, final float width, final float height, final Insets ins,
            final int arc) {
        paintLineBorder(g, ins.left, ins.top, width - ins.left - ins.right, height - ins.top - ins.bottom, arc);
    }

    public static void paintLineBorder(final Graphics2D g, final float x, final float y, final float width,
            final float height, final int arc) {
        float lw = getStrokeWidth(g);
        g.translate(x, y);
        doPaint(g, width, height, arc, lw, true);
        g.translate(-x, -y);
    }

    public static void fillRoundRect(final Graphics2D g, final float width, final float height, final Insets ins,
            final int arc) {
        fillRoundRect(g, ins.left, ins.top, width - ins.left - ins.right, height - ins.bottom - ins.top, arc, true);
    }

    public static void fillRoundRect(final Graphics2D g, final float x, final float y, final float width,
            final float height, final int arc) {
        fillRoundRect(g, x, y, width, height, arc, true);
    }

    public static void fillRoundRect(final Graphics2D g, final float x, final float y, final float width,
            final float height, final int arc, final boolean adjustForBorder) {
        GraphicsContext context = GraphicsUtil.setupStrokePainting(g);
        int stroke = adjustForBorder ? (int) getStrokeWidth(g) : 0;
        float lw = Scale.equalWithError(Scale.getScaleX(g), 1f) ? stroke : stroke / 2f;
        float arcSize = arc;

        arcSize -= stroke;
        g.translate(lw, lw);
        roundRect.setRoundRect(x, y, width - 2 * lw, height - 2 * lw, arcSize, arcSize);
        g.fill(roundRect);
        g.translate(-lw, -lw);
        context.restore();
    }

    public static void drawRect(final Graphics g, final Rectangle rect, final int thickness) {
        drawRect(g, rect.x, rect.y, rect.width, rect.height, thickness);
    }

    public static void drawRect(final Graphics g, final Rectangle rect) {
        drawRect(g, rect, 1);
    }

    public static void drawRect(final Graphics g, final int x, final int y, final int width, final int height,
            final int thickness) {
        g.fillRect(x, y, width, thickness);
        g.fillRect(x, y + thickness, thickness, height - 2 * thickness);
        g.fillRect(x + width - thickness, y + thickness, thickness, height - 2 * thickness);
        g.fillRect(x, y + height - thickness, width, thickness);
    }

    public static void drawRect(final Graphics g, final Rectangle r, final Insets lineWidths) {
        drawRect(g, r.x, r.y, r.width, r.height, lineWidths);
    }

    public static void drawRect(final Graphics g, final int x, final int y, final int width, final int height,
            final Insets lineWidths) {
        g.fillRect(x, y, width, lineWidths.top);
        g.fillRect(x, y + lineWidths.top, lineWidths.left, height - lineWidths.top - lineWidths.bottom);
        g.fillRect(x + width - lineWidths.right, y + lineWidths.top, lineWidths.right,
                height - lineWidths.left - lineWidths.right);
        g.fillRect(x, y + height - lineWidths.bottom, width, lineWidths.bottom);
    }

    public static void fillRect(final Graphics g, final Rectangle r) {
        fillRect(g, r.x, r.y, r.width, r.height);
    }

    public static void fillRect(final Graphics g, final int x, final int y, final int w, final int h) {
        g.fillRect(x, y, w, h);
    }
}