Examples with LinearGradient android.graphics.LinearGradient used on opensource projects

Example 61 with LinearGradient

use of android.graphics.LinearGradient in project android_packages_apps_crDroidSettings by crdroidandroid.

the class FloatingActionButton method createInnerStrokesDrawable.

private Drawable createInnerStrokesDrawable(final int color, float strokeWidth) {
    if (!mStrokeVisible) {
        return new ColorDrawable(Color.TRANSPARENT);
    }
    ShapeDrawable shapeDrawable = new ShapeDrawable(new OvalShape());
    final int bottomStrokeColor = darkenColor(color);
    final int bottomStrokeColorHalfTransparent = halfTransparent(bottomStrokeColor);
    final int topStrokeColor = lightenColor(color);
    final int topStrokeColorHalfTransparent = halfTransparent(topStrokeColor);
    final Paint paint = shapeDrawable.getPaint();
    paint.setAntiAlias(true);
    paint.setStrokeWidth(strokeWidth);
    paint.setStyle(Style.STROKE);
    shapeDrawable.setShaderFactory(new ShaderFactory() {

        @Override
        public Shader resize(int width, int height) {
            return new LinearGradient(width / 2, 0, width / 2, height, new int[] { topStrokeColor, topStrokeColorHalfTransparent, color, bottomStrokeColorHalfTransparent, bottomStrokeColor }, new float[] { 0f, 0.2f, 0.5f, 0.8f, 1f }, TileMode.CLAMP);
        }
    });
    return shapeDrawable;
}

Example 62 with LinearGradient

use of android.graphics.LinearGradient in project platform_frameworks_base by android.

the class RectShadowPainter method paintShadow.

public static void paintShadow(Outline viewOutline, float elevation, Canvas canvas) {
    Rect outline = new Rect();
    if (!viewOutline.getRect(outline)) {
        throw new IllegalArgumentException("Outline is not a rect shadow");
    }
    float shadowSize = elevationToShadow(elevation);
    int saved = modifyCanvas(canvas, shadowSize);
    if (saved == -1) {
        return;
    }
    try {
        Paint cornerPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DITHER_FLAG);
        cornerPaint.setStyle(Style.FILL);
        Paint edgePaint = new Paint(cornerPaint);
        edgePaint.setAntiAlias(false);
        float radius = viewOutline.getRadius();
        float outerArcRadius = radius + shadowSize;
        int[] colors = { START_COLOR, START_COLOR, END_COLOR };
        cornerPaint.setShader(new RadialGradient(0, 0, outerArcRadius, colors, new float[] { 0f, radius / outerArcRadius, 1f }, TileMode.CLAMP));
        edgePaint.setShader(new LinearGradient(0, 0, -shadowSize, 0, START_COLOR, END_COLOR, TileMode.CLAMP));
        Path path = new Path();
        path.setFillType(FillType.EVEN_ODD);
        // A rectangle bounding the complete shadow.
        RectF shadowRect = new RectF(outline);
        shadowRect.inset(-shadowSize, -shadowSize);
        // A rectangle with edges corresponding to the straight edges of the outline.
        RectF inset = new RectF(outline);
        inset.inset(radius, radius);
        // A rectangle used to represent the edge shadow.
        RectF edgeShadowRect = new RectF();
        // left and right sides.
        edgeShadowRect.set(-shadowSize, 0f, 0f, inset.height());
        // Left shadow
        sideShadow(canvas, edgePaint, edgeShadowRect, outline.left, inset.top, 0);
        // Right shadow
        sideShadow(canvas, edgePaint, edgeShadowRect, outline.right, inset.bottom, 2);
        // Top shadow
        edgeShadowRect.set(-shadowSize, 0, 0, inset.width());
        sideShadow(canvas, edgePaint, edgeShadowRect, inset.right, outline.top, 1);
        // bottom shadow. This needs an inset so that blank doesn't appear when the content is
        // moved up.
        edgeShadowRect.set(-shadowSize, 0, shadowSize / 2f, inset.width());
        edgePaint.setShader(new LinearGradient(edgeShadowRect.right, 0, edgeShadowRect.left, 0, colors, new float[] { 0f, 1 / 3f, 1f }, TileMode.CLAMP));
        sideShadow(canvas, edgePaint, edgeShadowRect, inset.left, outline.bottom, 3);
        // Draw corners.
        drawCorner(canvas, cornerPaint, path, inset.right, inset.bottom, outerArcRadius, 0);
        drawCorner(canvas, cornerPaint, path, inset.left, inset.bottom, outerArcRadius, 1);
        drawCorner(canvas, cornerPaint, path, inset.left, inset.top, outerArcRadius, 2);
        drawCorner(canvas, cornerPaint, path, inset.right, inset.top, outerArcRadius, 3);
    } finally {
        canvas.restoreToCount(saved);
    }
}

Example 63 with LinearGradient

use of android.graphics.LinearGradient in project android-floating-action-button by futuresimple.

the class FloatingActionButton method createInnerStrokesDrawable.

private Drawable createInnerStrokesDrawable(final int color, float strokeWidth) {
    if (!mStrokeVisible) {
        return new ColorDrawable(Color.TRANSPARENT);
    }
    ShapeDrawable shapeDrawable = new ShapeDrawable(new OvalShape());
    final int bottomStrokeColor = darkenColor(color);
    final int bottomStrokeColorHalfTransparent = halfTransparent(bottomStrokeColor);
    final int topStrokeColor = lightenColor(color);
    final int topStrokeColorHalfTransparent = halfTransparent(topStrokeColor);
    final Paint paint = shapeDrawable.getPaint();
    paint.setAntiAlias(true);
    paint.setStrokeWidth(strokeWidth);
    paint.setStyle(Style.STROKE);
    shapeDrawable.setShaderFactory(new ShaderFactory() {

        @Override
        public Shader resize(int width, int height) {
            return new LinearGradient(width / 2, 0, width / 2, height, new int[] { topStrokeColor, topStrokeColorHalfTransparent, color, bottomStrokeColorHalfTransparent, bottomStrokeColor }, new float[] { 0f, 0.2f, 0.5f, 0.8f, 1f }, TileMode.CLAMP);
        }
    });
    return shapeDrawable;
}

Example 64 with LinearGradient

use of android.graphics.LinearGradient in project AndroidSDK-RecipeBook by gabu.

the class Recipe051 method createReflectionBitmap.

public static Bitmap createReflectionBitmap(Bitmap src) {
    // 元画像と反射画像のマージン
    int margin = 4;
    int width = src.getWidth();
    int height = src.getHeight();
    // 上下反転させるMatrix
    Matrix matrix = new Matrix();
    matrix.preScale(1, -1);
    // 元画像の下半分を反転したBitmapを生成
    Bitmap reflection;
    reflection = Bitmap.createBitmap(src, 0, height / 2, width, height / 2, matrix, true);
    // 元画像と反射画像が合体した結果画像のBitmapを生成
    // これはまだ空っぽ
    Bitmap result;
    result = Bitmap.createBitmap(width, height + height / 2, Config.ARGB_8888);
    // キャンバスを使って
    Canvas canvas;
    canvas = new Canvas(result);
    // 結果画像に元画像を書き込む
    canvas.drawBitmap(src, 0, 0, null);
    // 結果画像に反射画像を書き込む
    canvas.drawBitmap(reflection, 0, height + margin, null);
    // ここまでで反転画像と合体した状態
    // ここからぼかし
    Paint paint = new Paint();
    // LinearGradientという直線方向のグラデーションを使います。
    LinearGradient shader;
    // だんだん透明になるグラデーションを作る
    // 0x90ffffff(やや透明) -> 0x00FFFFFF(完全透明)
    shader = new LinearGradient(0, height, 0, result.getHeight() + margin, 0x90ffffff, 0x00ffffff, TileMode.CLAMP);
    // Shaderクラスを継承しているのでsetShaderでPaintにセットします。
    paint.setShader(shader);
    // 色の変換モードを指定
    paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
    // グラデーションを描画
    canvas.drawRect(0, height, width, result.getHeight(), paint);
    return result;
}

Example 65 with LinearGradient

use of android.graphics.LinearGradient in project Lazy by l123456789jy.

the class ImageProcessor method reflection.

/**
     * 倒影处理
     * @param reflectionSpacing 原图与倒影之间的间距
     * @return 加上倒影后的图片
     */
public Bitmap reflection(int reflectionSpacing, int reflectionHeight) {
    int width = bitmap.getWidth();
    int height = bitmap.getHeight();
    /* 获取倒影图片，并创建一张宽度与原图相同，但高度等于原图的高度加上间距加上倒影的高度的图片，并创建画布。画布分为上中下三部分，上：是原图；中：是原图与倒影的间距；下：是倒影 */
    //
    Bitmap reflectionImage = reverseByVertical(bitmap);
    Bitmap bitmapWithReflection = Bitmap.createBitmap(width, height + reflectionSpacing + reflectionHeight, Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmapWithReflection);
    /* 将原图画到画布的上半部分，将倒影画到画布的下半部分，倒影与画布顶部的间距是原图的高度加上原图与倒影之间的间距 */
    canvas.drawBitmap(bitmap, 0, 0, null);
    canvas.drawBitmap(reflectionImage, 0, height + reflectionSpacing, null);
    reflectionImage.recycle();
    /* 将倒影改成半透明，创建画笔，并设置画笔的渐变从半透明的白色到全透明的白色，然后再倒影上面画半透明效果 */
    Paint paint = new Paint();
    paint.setShader(new LinearGradient(0, bitmap.getHeight(), 0, bitmapWithReflection.getHeight() + reflectionSpacing, 0x70ffffff, 0x00ffffff, Shader.TileMode.CLAMP));
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
    canvas.drawRect(0, height + reflectionSpacing, width, bitmapWithReflection.getHeight() + reflectionSpacing, paint);
    return bitmapWithReflection;
}