Example usage for android.graphics.drawable GradientDrawable setGradientCenter

Introduction

In this page you can find the example usage for android.graphics.drawable GradientDrawable setGradientCenter.

Prototype

public void setGradientCenter(float x, float y) 

Source Link

Document

Sets the position of the center of the gradient as a fraction of the width and height.

Usage

From source file:com.bilibili.magicasakura.utils.GradientDrawableUtils.java

@Override
protected Drawable inflateDrawable(Context context, XmlPullParser parser, AttributeSet attrs)
        throws XmlPullParserException, IOException {
    GradientDrawable gradientDrawable = new GradientDrawable();
    inflateGradientRootElement(context, attrs, gradientDrawable);

    int type;//from  www .  j av a2 s.c  om
    final int innerDepth = parser.getDepth() + 1;
    int depth;
    while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
            && ((depth = parser.getDepth()) >= innerDepth || type != XmlPullParser.END_TAG)) {
        if (type != XmlPullParser.START_TAG) {
            continue;
        }

        if (depth > innerDepth) {
            continue;
        }

        String name = parser.getName();

        if (name.equals("size")) {
            final int width = getAttrDimensionPixelSize(context, attrs, android.R.attr.width);
            final int height = getAttrDimensionPixelSize(context, attrs, android.R.attr.height);
            gradientDrawable.setSize(width, height);
        } else if (name.equals("gradient")
                && Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
            final float centerX = getAttrFloatOrFraction(context, attrs, android.R.attr.centerX, 0.5f, 1.0f,
                    1.0f);
            final float centerY = getAttrFloatOrFraction(context, attrs, android.R.attr.centerY, 0.5f, 1.0f,
                    1.0f);
            gradientDrawable.setGradientCenter(centerX, centerY);
            final boolean useLevel = getAttrBoolean(context, attrs, android.R.attr.useLevel, false);
            gradientDrawable.setUseLevel(useLevel);
            final int gradientType = getAttrInt(context, attrs, android.R.attr.type, 0);
            gradientDrawable.setGradientType(gradientType);
            final int startColor = getAttrColor(context, attrs, android.R.attr.startColor, Color.TRANSPARENT);
            final int centerColor = getAttrColor(context, attrs, android.R.attr.centerColor, Color.TRANSPARENT);
            final int endColor = getAttrColor(context, attrs, android.R.attr.endColor, Color.TRANSPARENT);
            if (!getAttrHasValue(context, attrs, android.R.attr.centerColor)) {
                gradientDrawable.setColors(new int[] { startColor, endColor });
            } else {
                gradientDrawable.setColors(new int[] { startColor, centerColor, endColor });
                setStGradientPositions(gradientDrawable.getConstantState(), 0.0f,
                        centerX != 0.5f ? centerX : centerY, 1f);
            }

            if (gradientType == GradientDrawable.LINEAR_GRADIENT) {
                int angle = (int) getAttrFloat(context, attrs, android.R.attr.angle, 0.0f);
                angle %= 360;

                if (angle % 45 != 0) {
                    throw new XmlPullParserException(
                            "<gradient> tag requires" + "'angle' attribute to " + "be a multiple of 45");
                }

                setStGradientAngle(gradientDrawable.getConstantState(), angle);

                switch (angle) {
                case 0:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.LEFT_RIGHT);
                    break;
                case 45:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BL_TR);
                    break;
                case 90:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BOTTOM_TOP);
                    break;
                case 135:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BR_TL);
                    break;
                case 180:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.RIGHT_LEFT);
                    break;
                case 225:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TR_BL);
                    break;
                case 270:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TOP_BOTTOM);
                    break;
                case 315:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TL_BR);
                    break;
                }
            } else {
                setGradientRadius(context, attrs, gradientDrawable, gradientType);
            }
        } else if (name.equals("solid")) {
            int color = getAttrColor(context, attrs, android.R.attr.color, Color.TRANSPARENT);
            gradientDrawable
                    .setColor(getAlphaColor(color, getAttrFloat(context, attrs, android.R.attr.alpha, 1.0f)));
        } else if (name.equals("stroke")) {
            final float alphaMod = getAttrFloat(context, attrs, android.R.attr.alpha, 1.0f);
            final int strokeColor = getAttrColor(context, attrs, android.R.attr.color, Color.TRANSPARENT);
            final int strokeWidth = getAttrDimensionPixelSize(context, attrs, android.R.attr.width);
            final float dashWidth = getAttrDimension(context, attrs, android.R.attr.dashWidth);
            if (dashWidth != 0.0f) {
                final float dashGap = getAttrDimension(context, attrs, android.R.attr.dashGap);
                gradientDrawable.setStroke(strokeWidth, getAlphaColor(strokeColor, alphaMod), dashWidth,
                        dashGap);
            } else {
                gradientDrawable.setStroke(strokeWidth, getAlphaColor(strokeColor, alphaMod));
            }
        } else if (name.equals("corners")) {
            final int radius = getAttrDimensionPixelSize(context, attrs, android.R.attr.radius);
            gradientDrawable.setCornerRadius(radius);

            final int topLeftRadius = getAttrDimensionPixelSize(context, attrs, android.R.attr.topLeftRadius,
                    radius);
            final int topRightRadius = getAttrDimensionPixelSize(context, attrs, android.R.attr.topRightRadius,
                    radius);
            final int bottomLeftRadius = getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.bottomLeftRadius, radius);
            final int bottomRightRadius = getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.bottomRightRadius, radius);
            if (topLeftRadius != radius || topRightRadius != radius || bottomLeftRadius != radius
                    || bottomRightRadius != radius) {
                // The corner radii are specified in clockwise order (see Path.addRoundRect())
                gradientDrawable.setCornerRadii(
                        new float[] { topLeftRadius, topLeftRadius, topRightRadius, topRightRadius,
                                bottomRightRadius, bottomRightRadius, bottomLeftRadius, bottomLeftRadius });
            }
        } else if (name.equals("padding")) {
            final int paddingLeft = getAttrDimensionPixelOffset(context, attrs, android.R.attr.left);
            final int paddingTop = getAttrDimensionPixelOffset(context, attrs, android.R.attr.top);
            final int paddingRight = getAttrDimensionPixelOffset(context, attrs, android.R.attr.right);
            final int paddingBottom = getAttrDimensionPixelOffset(context, attrs, android.R.attr.bottom);
            if (paddingLeft != 0 || paddingTop != 0 || paddingRight != 0 || paddingBottom != 0) {
                final Rect pad = new Rect();
                pad.set(paddingLeft, paddingTop, paddingRight, paddingBottom);
                try {
                    if (sPaddingField == null) {
                        sPaddingField = GradientDrawable.class.getDeclaredField("mPadding");
                        sPaddingField.setAccessible(true);
                    }
                    sPaddingField.set(gradientDrawable, pad);
                    if (sStPaddingField == null) {
                        sStPaddingField = Class
                                .forName("android.graphics.drawable.GradientDrawable$GradientState")
                                .getDeclaredField("mPadding");
                        sStPaddingField.setAccessible(true);
                    }
                    sStPaddingField.set(gradientDrawable.getConstantState(), pad);
                } catch (NoSuchFieldException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        } else {
            Log.w("drawable", "Bad element under <shape>: " + name);
        }
    }
    return gradientDrawable;
}

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From source file:com.bilibili.magicasakura.utils.GradientDrawableInflateImpl.java

@Override
public Drawable inflateDrawable(Context context, XmlPullParser parser, AttributeSet attrs)
        throws XmlPullParserException, IOException {
    GradientDrawable gradientDrawable = new GradientDrawable();
    inflateGradientRootElement(context, attrs, gradientDrawable);

    int type;/*from  w ww .  j  a v  a2s  . c  o  m*/
    final int innerDepth = parser.getDepth() + 1;
    int depth;
    while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
            && ((depth = parser.getDepth()) >= innerDepth || type != XmlPullParser.END_TAG)) {
        if (type != XmlPullParser.START_TAG) {
            continue;
        }

        if (depth > innerDepth) {
            continue;
        }

        String name = parser.getName();

        if (name.equals("size")) {
            final int width = DrawableUtils.getAttrDimensionPixelSize(context, attrs, android.R.attr.width);
            final int height = DrawableUtils.getAttrDimensionPixelSize(context, attrs, android.R.attr.height);
            gradientDrawable.setSize(width, height);
        } else if (name.equals("gradient")
                && Build.VERSION.SDK_INT > Build.VERSION_CODES.ICE_CREAM_SANDWICH_MR1) {
            final float centerX = getAttrFloatOrFraction(context, attrs, android.R.attr.centerX, 0.5f, 1.0f,
                    1.0f);
            final float centerY = getAttrFloatOrFraction(context, attrs, android.R.attr.centerY, 0.5f, 1.0f,
                    1.0f);
            gradientDrawable.setGradientCenter(centerX, centerY);
            final boolean useLevel = DrawableUtils.getAttrBoolean(context, attrs, android.R.attr.useLevel,
                    false);
            gradientDrawable.setUseLevel(useLevel);
            final int gradientType = DrawableUtils.getAttrInt(context, attrs, android.R.attr.type, 0);
            gradientDrawable.setGradientType(gradientType);
            final int startColor = DrawableUtils.getAttrColor(context, attrs, android.R.attr.startColor,
                    Color.TRANSPARENT);
            final int centerColor = DrawableUtils.getAttrColor(context, attrs, android.R.attr.centerColor,
                    Color.TRANSPARENT);
            final int endColor = DrawableUtils.getAttrColor(context, attrs, android.R.attr.endColor,
                    Color.TRANSPARENT);
            if (!DrawableUtils.getAttrHasValue(context, attrs, android.R.attr.centerColor)) {
                gradientDrawable.setColors(new int[] { startColor, endColor });
            } else {
                gradientDrawable.setColors(new int[] { startColor, centerColor, endColor });
                setStGradientPositions(gradientDrawable.getConstantState(), 0.0f,
                        centerX != 0.5f ? centerX : centerY, 1f);
            }

            if (gradientType == GradientDrawable.LINEAR_GRADIENT) {
                int angle = (int) DrawableUtils.getAttrFloat(context, attrs, android.R.attr.angle, 0.0f);
                angle %= 360;

                if (angle % 45 != 0) {
                    throw new XmlPullParserException(
                            "<gradient> tag requires" + "'angle' attribute to " + "be a multiple of 45");
                }

                setStGradientAngle(gradientDrawable.getConstantState(), angle);

                switch (angle) {
                case 0:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.LEFT_RIGHT);
                    break;
                case 45:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BL_TR);
                    break;
                case 90:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BOTTOM_TOP);
                    break;
                case 135:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.BR_TL);
                    break;
                case 180:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.RIGHT_LEFT);
                    break;
                case 225:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TR_BL);
                    break;
                case 270:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TOP_BOTTOM);
                    break;
                case 315:
                    gradientDrawable.setOrientation(GradientDrawable.Orientation.TL_BR);
                    break;
                }
            } else {
                setGradientRadius(context, attrs, gradientDrawable, gradientType);
            }
        } else if (name.equals("solid")) {
            int color = DrawableUtils.getAttrColor(context, attrs, android.R.attr.color, Color.TRANSPARENT);
            gradientDrawable.setColor(getAlphaColor(color,
                    DrawableUtils.getAttrFloat(context, attrs, android.R.attr.alpha, 1.0f)));
        } else if (name.equals("stroke")) {
            final float alphaMod = DrawableUtils.getAttrFloat(context, attrs, android.R.attr.alpha, 1.0f);
            final int strokeColor = DrawableUtils.getAttrColor(context, attrs, android.R.attr.color,
                    Color.TRANSPARENT);
            final int strokeWidth = DrawableUtils.getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.width);
            final float dashWidth = DrawableUtils.getAttrDimension(context, attrs, android.R.attr.dashWidth);
            if (dashWidth != 0.0f) {
                final float dashGap = DrawableUtils.getAttrDimension(context, attrs, android.R.attr.dashGap);
                gradientDrawable.setStroke(strokeWidth, getAlphaColor(strokeColor, alphaMod), dashWidth,
                        dashGap);
            } else {
                gradientDrawable.setStroke(strokeWidth, getAlphaColor(strokeColor, alphaMod));
            }
        } else if (name.equals("corners")) {
            final int radius = DrawableUtils.getAttrDimensionPixelSize(context, attrs, android.R.attr.radius);
            gradientDrawable.setCornerRadius(radius);

            final int topLeftRadius = DrawableUtils.getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.topLeftRadius, radius);
            final int topRightRadius = DrawableUtils.getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.topRightRadius, radius);
            final int bottomLeftRadius = DrawableUtils.getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.bottomLeftRadius, radius);
            final int bottomRightRadius = DrawableUtils.getAttrDimensionPixelSize(context, attrs,
                    android.R.attr.bottomRightRadius, radius);
            if (topLeftRadius != radius || topRightRadius != radius || bottomLeftRadius != radius
                    || bottomRightRadius != radius) {
                // The corner radii are specified in clockwise order (see Path.addRoundRect())
                gradientDrawable.setCornerRadii(
                        new float[] { topLeftRadius, topLeftRadius, topRightRadius, topRightRadius,
                                bottomRightRadius, bottomRightRadius, bottomLeftRadius, bottomLeftRadius });
            }
        } else if (name.equals("padding")) {
            final int paddingLeft = DrawableUtils.getAttrDimensionPixelOffset(context, attrs,
                    android.R.attr.left);
            final int paddingTop = DrawableUtils.getAttrDimensionPixelOffset(context, attrs,
                    android.R.attr.top);
            final int paddingRight = DrawableUtils.getAttrDimensionPixelOffset(context, attrs,
                    android.R.attr.right);
            final int paddingBottom = DrawableUtils.getAttrDimensionPixelOffset(context, attrs,
                    android.R.attr.bottom);
            if (paddingLeft != 0 || paddingTop != 0 || paddingRight != 0 || paddingBottom != 0) {
                final Rect pad = new Rect();
                pad.set(paddingLeft, paddingTop, paddingRight, paddingBottom);
                try {
                    if (sPaddingField == null) {
                        sPaddingField = GradientDrawable.class.getDeclaredField("mPadding");
                        sPaddingField.setAccessible(true);
                    }
                    sPaddingField.set(gradientDrawable, pad);
                    if (sStPaddingField == null) {
                        sStPaddingField = Class
                                .forName("android.graphics.drawable.GradientDrawable$GradientState")
                                .getDeclaredField("mPadding");
                        sStPaddingField.setAccessible(true);
                    }
                    sStPaddingField.set(gradientDrawable.getConstantState(), pad);
                } catch (NoSuchFieldException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                } catch (ClassNotFoundException e) {
                    e.printStackTrace();
                }
            }
        } else {
            Log.w("drawable", "Bad element under <shape>: " + name);
        }
    }
    return gradientDrawable;
}

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