Example usage for android.graphics.drawable GradientDrawable LINEAR_GRADIENT

List of usage examples for android.graphics.drawable GradientDrawable LINEAR_GRADIENT

Introduction

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

Prototype

int LINEAR_GRADIENT

To view the source code for android.graphics.drawable GradientDrawable LINEAR_GRADIENT.

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Document

Gradient is linear (default.)

Usage

From source file:Main.java

public static void setGradientForPreferenceView(View v) {

    int[] colorsForGradient = new int[2];
    colorsForGradient[0] = Color.argb(0, 0, 0, 0);
    colorsForGradient[1] = Color.argb(64, 255, 255, 255);
    GradientDrawable d = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, colorsForGradient);
    d.setGradientType(GradientDrawable.LINEAR_GRADIENT);
    d.setShape(GradientDrawable.RECTANGLE);
    // doesn't help d.setUseLevel(true);
    d.setDither(true);//from w  w  w  . ja  v a 2  s .c  o  m
    v.setBackgroundDrawable(d);
}

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 w w  w  .j  av a  2  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;
}

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  w  w .java2  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 = 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;
}

From source file:com.sonvp.tooltip.Tooltip.java

private View getViewTooltip(Builder builder, int backgroundColor) {

    View toolTip = null;/*from   w w w.  ja  v  a  2  s . c om*/

    if (builder.viewTooltip == null) {
        TextView text = new TextView(builder.context);
        text.setPadding((int) builder.leftPadding, (int) builder.topPadding, (int) builder.rightPadding,
                (int) builder.bottomPadding);
        text.setGravity(builder.textGravity);
        text.setTextColor(builder.textColor);
        text.setTextSize(TypedValue.COMPLEX_UNIT_PX, builder.textSize);
        text.setTypeface(builder.typeface, builder.typefaceStyle);
        int lines = builder.lines;
        if (lines > 0) {
            text.setLines(lines);
            text.setEllipsize(TextUtils.TruncateAt.END);
        }

        CharSequence txt = builder.text;
        if (TextUtils.isEmpty(txt)) {
            txt = builder.context.getString(builder.textResourceId);
        }
        text.setText(txt);
        toolTip = text;

    } else {
        toolTip = builder.viewTooltip;
    }

    float radius = builder.radius;
    if (radius > 0.0F) {
        GradientDrawable drawable = new GradientDrawable();
        drawable.setColor(backgroundColor);
        drawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
        drawable.setCornerRadius(radius);

        //noinspection deprecation
        toolTip.setBackgroundDrawable(drawable);
    } else {
        toolTip.setBackgroundColor(backgroundColor);
    }

    return toolTip;
}