Examples with AlphaComposite java.awt.AlphaComposite used on opensource projects

Example 41 with AlphaComposite

use of java.awt.AlphaComposite in project LoboEvolution by LoboEvolution.

the class MintTitlePane method paintBackground.

/**
 * {@inheritDoc}
 */
@Override
public void paintBackground(Graphics g) {
    if (isActive()) {
        Graphics2D g2D = (Graphics2D) g;
        Composite composite = g2D.getComposite();
        if (backgroundImage != null) {
            g.drawImage(backgroundImage, 0, 0, null);
            AlphaComposite alpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alphaValue);
            g2D.setComposite(alpha);
        }
        JTattooUtilities.fillVerGradient(g, AbstractLookAndFeel.getTheme().getWindowTitleColors(), 0, 0, getWidth(), getHeight());
        g2D.setComposite(composite);
    } else {
        JTattooUtilities.fillVerGradient(g, AbstractLookAndFeel.getTheme().getWindowInactiveTitleColors(), 0, 0, getWidth(), getHeight());
    }
}

Example 42 with AlphaComposite

use of java.awt.AlphaComposite in project SIMVA-SoS by SESoS.

the class SWTGraphics2D method setColor.

/**
 * Sets the current color for this graphics context.
 *
 * @param color  the color (<code>null</code> permitted but ignored).
 *
 * @see #getColor()
 */
public void setColor(Color color) {
    if (color == null) {
        return;
    }
    org.eclipse.swt.graphics.Color swtColor = getSwtColorFromPool(color);
    this.gc.setForeground(swtColor);
    // handle transparency and compositing.
    if (this.composite instanceof AlphaComposite) {
        AlphaComposite acomp = (AlphaComposite) this.composite;
        switch(acomp.getRule()) {
            case AlphaComposite.SRC_OVER:
                this.gc.setAlpha((int) (color.getAlpha() * acomp.getAlpha()));
                break;
            default:
                this.gc.setAlpha(color.getAlpha());
                break;
        }
    }
}

Example 43 with AlphaComposite

use of java.awt.AlphaComposite in project SIMVA-SoS by SESoS.

the class SWTGraphics2D method setComposite.

/**
 * Sets the current composite.  This implementation currently supports
 * only the {@link AlphaComposite} class.
 *
 * @param comp  the composite (<code>null</code> not permitted).
 */
public void setComposite(Composite comp) {
    if (comp == null) {
        throw new IllegalArgumentException("Null 'comp' argument.");
    }
    this.composite = comp;
    if (comp instanceof AlphaComposite) {
        AlphaComposite acomp = (AlphaComposite) comp;
        int alpha = (int) (acomp.getAlpha() * 0xFF);
        this.gc.setAlpha(alpha);
    }
}

Example 44 with AlphaComposite

use of java.awt.AlphaComposite in project hutool by looly.

the class GifCaptcha method graphicsImage.

/**
 * 画随机码图
 *
 * @param fontColor 随机字体颜色
 * @param words     字符数组
 * @param flag      透明度使用
 * @return BufferedImage
 */
private BufferedImage graphicsImage(char[] chars, Color[] fontColor, char[] words, int flag) {
    BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
    // 或得图形上下文
    Graphics2D g2d = image.createGraphics();
    // 利用指定颜色填充背景
    g2d.setColor(ObjectUtil.defaultIfNull(this.background, Color.WHITE));
    g2d.fillRect(0, 0, width, height);
    AlphaComposite ac;
    // 字符的y坐标
    float y = (height >> 1) + (font.getSize() >> 1);
    float m = 1.0f * (width - (chars.length * font.getSize())) / chars.length;
    // 字符的x坐标
    float x = Math.max(m / 2.0f, 2);
    g2d.setFont(font);
    // 指定透明度
    if (null != this.textAlpha) {
        g2d.setComposite(this.textAlpha);
    }
    for (int i = 0; i < chars.length; i++) {
        ac = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, getAlpha(chars.length, flag, i));
        g2d.setComposite(ac);
        g2d.setColor(fontColor[i]);
        g2d.drawOval(RandomUtil.randomInt(width), RandomUtil.randomInt(height), RandomUtil.randomInt(5, 30), 5 + RandomUtil.randomInt(5, 30));
        // 绘制椭圆边框
        g2d.drawString(words[i] + "", x + (font.getSize() + m) * i, y);
    }
    g2d.dispose();
    return image;
}

Example 45 with AlphaComposite

use of java.awt.AlphaComposite in project jdk8u_jdk by JetBrains.

the class GraphicsTests method initContext.

public void initContext(TestEnvironment env, Context ctx) {
    ctx.graphics = env.getGraphics();
    int w = env.getWidth();
    int h = env.getHeight();
    ctx.size = env.getIntValue(sizeList);
    ctx.outdim = getOutputSize(ctx.size, ctx.size);
    ctx.pixscale = 1.0;
    if (hasGraphics2D) {
        Graphics2D g2d = (Graphics2D) ctx.graphics;
        AlphaComposite ac = (AlphaComposite) env.getModifier(compRules);
        if (env.isEnabled(doExtraAlpha)) {
            ac = AlphaComposite.getInstance(ac.getRule(), 0.125f);
        }
        g2d.setComposite(ac);
        if (env.isEnabled(doXor)) {
            g2d.setXORMode(Color.white);
        }
        if (env.isEnabled(doClipping)) {
            Polygon p = new Polygon();
            p.addPoint(0, 0);
            p.addPoint(w, 0);
            p.addPoint(0, h);
            p.addPoint(w, h);
            p.addPoint(0, 0);
            g2d.clip(p);
        }
        Transform tx = (Transform) env.getModifier(transforms);
        Dimension envdim = new Dimension(w, h);
        tx.init(g2d, ctx, envdim);
        w = envdim.width;
        h = envdim.height;
        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, env.getModifier(renderHint));
    }
    switch(env.getIntValue(animList)) {
        case 0:
            ctx.animate = false;
            ctx.maxX = 3;
            ctx.maxY = 1;
            ctx.orgX = (w - ctx.outdim.width) / 2;
            ctx.orgY = (h - ctx.outdim.height) / 2;
            break;
        case 1:
            ctx.animate = true;
            ctx.maxX = Math.max(Math.min(32, w - ctx.outdim.width), 3);
            ctx.maxY = 1;
            ctx.orgX = (w - ctx.outdim.width - ctx.maxX) / 2;
            ctx.orgY = (h - ctx.outdim.height) / 2;
            break;
        case 2:
            ctx.animate = true;
            ctx.maxX = (w - ctx.outdim.width) + 1;
            ctx.maxY = (h - ctx.outdim.height) + 1;
            ctx.maxX = adjustWidth(ctx.maxX, ctx.maxY);
            ctx.maxX = Math.max(ctx.maxX, 3);
            ctx.maxY = Math.max(ctx.maxY, 1);
            // ctx.orgX = ctx.orgY = 0;
            break;
    }
    ctx.initX = ctx.maxX / 2;
    ctx.initY = ctx.maxY / 2;
}