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

Example 1 with SweepGradient

use of android.graphics.SweepGradient in project android_frameworks_base by ResurrectionRemix.

the class GradientColor method onColorsChange.

private void onColorsChange() {
    int[] tempColors = null;
    float[] tempOffsets = null;
    if (mItemColors != null) {
        int length = mItemColors.length;
        tempColors = new int[length];
        tempOffsets = new float[length];
        for (int i = 0; i < length; i++) {
            tempColors[i] = mItemColors[i];
            tempOffsets[i] = mItemOffsets[i];
        }
    } else {
        if (mHasCenterColor) {
            tempColors = new int[3];
            tempColors[0] = mStartColor;
            tempColors[1] = mCenterColor;
            tempColors[2] = mEndColor;
            tempOffsets = new float[3];
            tempOffsets[0] = 0.0f;
            // Since 0.5f is default value, try to take the one that isn't 0.5f
            tempOffsets[1] = 0.5f;
            tempOffsets[2] = 1f;
        } else {
            tempColors = new int[2];
            tempColors[0] = mStartColor;
            tempColors[1] = mEndColor;
        }
    }
    if (tempColors.length < 2) {
        Log.w(TAG, "<gradient> tag requires 2 color values specified!" + tempColors.length + " " + tempColors);
    }
    if (mGradientType == GradientDrawable.LINEAR_GRADIENT) {
        mShader = new LinearGradient(mStartX, mStartY, mEndX, mEndY, tempColors, tempOffsets, parseTileMode(mTileMode));
    } else {
        if (mGradientType == GradientDrawable.RADIAL_GRADIENT) {
            mShader = new RadialGradient(mCenterX, mCenterY, mGradientRadius, tempColors, tempOffsets, parseTileMode(mTileMode));
        } else {
            mShader = new SweepGradient(mCenterX, mCenterY, tempColors, tempOffsets);
        }
    }
    mDefaultColor = tempColors[0];
}

Example 2 with SweepGradient

use of android.graphics.SweepGradient in project android_frameworks_base by DirtyUnicorns.

the class GradientDrawable method ensureValidRect.

/**
     * This checks mGradientIsDirty, and if it is true, recomputes both our drawing
     * rectangle (mRect) and the gradient itself, since it depends on our
     * rectangle too.
     * @return true if the resulting rectangle is not empty, false otherwise
     */
private boolean ensureValidRect() {
    if (mGradientIsDirty) {
        mGradientIsDirty = false;
        Rect bounds = getBounds();
        float inset = 0;
        if (mStrokePaint != null) {
            inset = mStrokePaint.getStrokeWidth() * 0.5f;
        }
        final GradientState st = mGradientState;
        mRect.set(bounds.left + inset, bounds.top + inset, bounds.right - inset, bounds.bottom - inset);
        final int[] gradientColors = st.mGradientColors;
        if (gradientColors != null) {
            final RectF r = mRect;
            final float x0, x1, y0, y1;
            if (st.mGradient == LINEAR_GRADIENT) {
                final float level = st.mUseLevel ? getLevel() / 10000.0f : 1.0f;
                switch(st.mOrientation) {
                    case TOP_BOTTOM:
                        x0 = r.left;
                        y0 = r.top;
                        x1 = x0;
                        y1 = level * r.bottom;
                        break;
                    case TR_BL:
                        x0 = r.right;
                        y0 = r.top;
                        x1 = level * r.left;
                        y1 = level * r.bottom;
                        break;
                    case RIGHT_LEFT:
                        x0 = r.right;
                        y0 = r.top;
                        x1 = level * r.left;
                        y1 = y0;
                        break;
                    case BR_TL:
                        x0 = r.right;
                        y0 = r.bottom;
                        x1 = level * r.left;
                        y1 = level * r.top;
                        break;
                    case BOTTOM_TOP:
                        x0 = r.left;
                        y0 = r.bottom;
                        x1 = x0;
                        y1 = level * r.top;
                        break;
                    case BL_TR:
                        x0 = r.left;
                        y0 = r.bottom;
                        x1 = level * r.right;
                        y1 = level * r.top;
                        break;
                    case LEFT_RIGHT:
                        x0 = r.left;
                        y0 = r.top;
                        x1 = level * r.right;
                        y1 = y0;
                        break;
                    default:
                        /* TL_BR */
                        x0 = r.left;
                        y0 = r.top;
                        x1 = level * r.right;
                        y1 = level * r.bottom;
                        break;
                }
                mFillPaint.setShader(new LinearGradient(x0, y0, x1, y1, gradientColors, st.mPositions, Shader.TileMode.CLAMP));
            } else if (st.mGradient == RADIAL_GRADIENT) {
                x0 = r.left + (r.right - r.left) * st.mCenterX;
                y0 = r.top + (r.bottom - r.top) * st.mCenterY;
                float radius = st.mGradientRadius;
                if (st.mGradientRadiusType == RADIUS_TYPE_FRACTION) {
                    // Fall back to parent width or height if intrinsic
                    // size is not specified.
                    final float width = st.mWidth >= 0 ? st.mWidth : r.width();
                    final float height = st.mHeight >= 0 ? st.mHeight : r.height();
                    radius *= Math.min(width, height);
                } else if (st.mGradientRadiusType == RADIUS_TYPE_FRACTION_PARENT) {
                    radius *= Math.min(r.width(), r.height());
                }
                if (st.mUseLevel) {
                    radius *= getLevel() / 10000.0f;
                }
                mGradientRadius = radius;
                if (radius <= 0) {
                    // We can't have a shader with non-positive radius, so
                    // let's have a very, very small radius.
                    radius = 0.001f;
                }
                mFillPaint.setShader(new RadialGradient(x0, y0, radius, gradientColors, null, Shader.TileMode.CLAMP));
            } else if (st.mGradient == SWEEP_GRADIENT) {
                x0 = r.left + (r.right - r.left) * st.mCenterX;
                y0 = r.top + (r.bottom - r.top) * st.mCenterY;
                int[] tempColors = gradientColors;
                float[] tempPositions = null;
                if (st.mUseLevel) {
                    tempColors = st.mTempColors;
                    final int length = gradientColors.length;
                    if (tempColors == null || tempColors.length != length + 1) {
                        tempColors = st.mTempColors = new int[length + 1];
                    }
                    System.arraycopy(gradientColors, 0, tempColors, 0, length);
                    tempColors[length] = gradientColors[length - 1];
                    tempPositions = st.mTempPositions;
                    final float fraction = 1.0f / (length - 1);
                    if (tempPositions == null || tempPositions.length != length + 1) {
                        tempPositions = st.mTempPositions = new float[length + 1];
                    }
                    final float level = getLevel() / 10000.0f;
                    for (int i = 0; i < length; i++) {
                        tempPositions[i] = i * fraction * level;
                    }
                    tempPositions[length] = 1.0f;
                }
                mFillPaint.setShader(new SweepGradient(x0, y0, tempColors, tempPositions));
            }
            // maxed out so that alpha modulation works correctly.
            if (st.mSolidColors == null) {
                mFillPaint.setColor(Color.BLACK);
            }
        }
    }
    return !mRect.isEmpty();
}

Example 3 with SweepGradient

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

the class GradientColor method onColorsChange.

private void onColorsChange() {
    int[] tempColors = null;
    float[] tempOffsets = null;
    if (mItemColors != null) {
        int length = mItemColors.length;
        tempColors = new int[length];
        tempOffsets = new float[length];
        for (int i = 0; i < length; i++) {
            tempColors[i] = mItemColors[i];
            tempOffsets[i] = mItemOffsets[i];
        }
    } else {
        if (mHasCenterColor) {
            tempColors = new int[3];
            tempColors[0] = mStartColor;
            tempColors[1] = mCenterColor;
            tempColors[2] = mEndColor;
            tempOffsets = new float[3];
            tempOffsets[0] = 0.0f;
            // Since 0.5f is default value, try to take the one that isn't 0.5f
            tempOffsets[1] = 0.5f;
            tempOffsets[2] = 1f;
        } else {
            tempColors = new int[2];
            tempColors[0] = mStartColor;
            tempColors[1] = mEndColor;
        }
    }
    if (tempColors.length < 2) {
        Log.w(TAG, "<gradient> tag requires 2 color values specified!" + tempColors.length + " " + tempColors);
    }
    if (mGradientType == GradientDrawable.LINEAR_GRADIENT) {
        mShader = new LinearGradient(mStartX, mStartY, mEndX, mEndY, tempColors, tempOffsets, parseTileMode(mTileMode));
    } else {
        if (mGradientType == GradientDrawable.RADIAL_GRADIENT) {
            mShader = new RadialGradient(mCenterX, mCenterY, mGradientRadius, tempColors, tempOffsets, parseTileMode(mTileMode));
        } else {
            mShader = new SweepGradient(mCenterX, mCenterY, tempColors, tempOffsets);
        }
    }
    mDefaultColor = tempColors[0];
}

Example 4 with SweepGradient

use of android.graphics.SweepGradient in project android_packages_apps_Gallery2 by LineageOS.

the class ColorRectView method setUpColorPanel.

private void setUpColorPanel() {
    float val = mHSVO[2];
    int v = 0xFF000000 | 0x10101 * (int) (val * 0xFF);
    int[] colors = new int[] { 0x0000000, v };
    int[] colors2 = new int[] { 0x0000000, 0xFF000000 };
    int[] wheelColor = new int[mColors.length];
    float[] hsv = new float[3];
    for (int i = 0; i < wheelColor.length; i++) {
        Color.colorToHSV(mColors[i], hsv);
        hsv[2] = mHSVO[2];
        wheelColor[i] = Color.HSVToColor(hsv);
    }
    updateDot();
    updateDotPaint();
    SweepGradient sg = new SweepGradient(mCtrX, mCtrY, wheelColor, null);
    LinearGradient lg = new LinearGradient(mBorder, 0, mWidth - mBorder, 0, wheelColor, null, Shader.TileMode.CLAMP);
    mWheelPaint1.setShader(lg);
    LinearGradient rg = new LinearGradient(0, mBorder, 0, mHeight - mBorder, colors, null, Shader.TileMode.CLAMP);
    mWheelPaint2.setShader(rg);
    LinearGradient rg2 = new LinearGradient(0, mBorder, 0, mHeight - mBorder, colors2, null, Shader.TileMode.CLAMP);
    mWheelPaint3.setShader(rg2);
}

Example 5 with SweepGradient

use of android.graphics.SweepGradient in project AndoridLib by twp520.

the class YbbView method getGradient.

/**
 * 得到一个渐变的圆弧叠加层
 *
 * @param d        圆的直径
 * @param colors   渐变数组
 * @param startArc 从什么角度开始渐变
 * @return
 */
private SweepGradient getGradient(int d, int[] colors, int startArc) {
    SweepGradient sweepGradient = new SweepGradient(d / 2.0f, d / 2.0f, colors, null);
    // 旋转 不然是从0度开始渐变
    Matrix matrix = new Matrix();
    matrix.setRotate(startArc, d / 2.0f, d / 2.0f);
    sweepGradient.setLocalMatrix(matrix);
    return sweepGradient;
}