java类android.graphics.Outline的实例源码

/**
 * Populates <code>outline</code> with the first available (non-empty) layer outline.
 *
 * @param outline Outline in which to place the first available layer outline
 */
@Override
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public void getOutline(@NonNull Outline outline) {
    final ChildDrawable[] array = mLayerState.mChildren;
    final int N = mLayerState.mNum;
    for (int i = 0; i < N; i++) {
        final Drawable dr = array[i].mDrawable;
        if (dr != null) {
            dr.getOutline(outline);
            if (!outline.isEmpty()) {
                return;
            }
        }
    }
}

public FloatingActionButton(Context context, AttributeSet attrs, int defStyleAttr,
        int defStyleRes) {
    super(context, attrs, defStyleAttr);

    setClickable(true);

    // Set the outline provider for this view. The provider is given the outline which it can
    // then modify as needed. In this case we set the outline to be an oval fitting the height
    // and width.
    setOutlineProvider(new ViewOutlineProvider() {
        @Override
        public void getOutline(View view, Outline outline) {
            outline.setOval(0, 0, getWidth(), getHeight());
        }
    });

    // Finally, enable clipping to the outline, using the provider we set above
    setClipToOutline(true);
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private Drawable createFillDrawable() {
    StateListDrawable drawable = new StateListDrawable();
    drawable.addState(new int[]{android.R.attr.state_pressed}, createCircleDrawable(mColorPressed));
    drawable.addState(new int[]{}, createCircleDrawable(mColorNormal));

    if (Util.hasLollipop()) {
        RippleDrawable ripple = new RippleDrawable(new ColorStateList(new int[][]{{}},
                new int[]{mColorRipple}), drawable, null);
        setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setOval(0, 0, view.getWidth(), view.getHeight());
            }
        });
        setClipToOutline(true);
        mBackgroundDrawable = ripple;
        return ripple;
    }

    mBackgroundDrawable = drawable;
    return drawable;
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private Drawable createFillDrawable() {
    StateListDrawable drawable = new StateListDrawable();
    drawable.addState(new int[]{android.R.attr.state_pressed}, createRectDrawable(mColorPressed));
    drawable.addState(new int[]{}, createRectDrawable(mColorNormal));

    if (Util.hasLollipop()) {
        RippleDrawable ripple = new RippleDrawable(new ColorStateList(new int[][]{{}},
                new int[]{mColorRipple}), drawable, null);
        setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setOval(0, 0, view.getWidth(), view.getHeight());
            }
        });
        setClipToOutline(true);
        mBackgroundDrawable = ripple;
        return ripple;
    }

    mBackgroundDrawable = drawable;
    return drawable;
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private Drawable createFillDrawable() {
    StateListDrawable drawable = new StateListDrawable();
    drawable.addState(new int[]{-android.R.attr.state_enabled}, createCircleDrawable(mColorDisabled));
    drawable.addState(new int[]{android.R.attr.state_pressed}, createCircleDrawable(mColorPressed));
    drawable.addState(new int[]{}, createCircleDrawable(mColorNormal));

    if (Util.hasLollipop()) {
        RippleDrawable ripple = new RippleDrawable(new ColorStateList(new int[][]{{}},
                new int[]{mColorRipple}), drawable, null);
        setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setOval(0, 0, view.getWidth(), view.getHeight());
            }
        });
        setClipToOutline(true);
        mBackgroundDrawable = ripple;
        return ripple;
    }

    mBackgroundDrawable = drawable;
    return drawable;
}

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private Drawable createFillDrawable() {
    StateListDrawable drawable = new StateListDrawable();
    drawable.addState(new int[]{android.R.attr.state_pressed}, createRectDrawable(mColorPressed));
    drawable.addState(new int[]{}, createRectDrawable(mColorNormal));

    if (hasLollipop()) {
        RippleDrawable ripple = new RippleDrawable(new ColorStateList(new int[][]{{}},
                new int[]{mColorRipple}), drawable, null);
        setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setOval(0, 0, view.getWidth(), view.getHeight());
            }
        });
        setClipToOutline(true);
        mBackgroundDrawable = ripple;
        return ripple;
    }

    mBackgroundDrawable = drawable;
    return drawable;
}

@Override
protected void onSizeChanged(final int w, final int h, int oldw, int oldh) {
    super.onSizeChanged(w, h, oldw, oldh);
    mDrawable.setBounds(0, 0, w, h);
    mBounds.set(0, 0, w, h);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        setOutlineProvider(new ViewOutlineProvider() {
            @TargetApi(Build.VERSION_CODES.LOLLIPOP)
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setOval(0, 0, view.getWidth(), view.getHeight());
            }
        });
        setClipToOutline(true);
    }
}

private void init() {
    setWillNotDraw(false);

    mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
    mPaint.setStyle(Paint.Style.FILL);

    mPath = new Path();

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        mViewOutlineProvider = new ViewOutlineProvider() {
            @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
            @Override
            public void getOutline(View view, Outline outline) {
                if (mPath.isConvex()) outline.setConvexPath(mPath);
            }
        };

    }
}

public FloatingActionButton(Context context, AttributeSet attrs, int defStyleAttr,
                            int defStyleRes) {
    super(context, attrs, defStyleAttr);

    setClickable(true);

    // Set the outline provider for this view. The provider is given the outline which it can
    // then modify as needed. In this case we set the outline to be an oval fitting the height
    // and width.
    setOutlineProvider(new ViewOutlineProvider() {
        @Override
        public void getOutline(View view, Outline outline) {
            outline.setOval(0, 0, getWidth(), getHeight());
        }
    });

    // Finally, enable clipping to the outline, using the provider we set above
    setClipToOutline(true);
}

/**
 * Constructor.
 * @param context the application context.
 * @param attrs attributes.
 * @param defStyleAttr attribute in the current theme that contains a
 *                     reference to a style resource that supplies defaults
 *                     values for the StyledAttributes
 * @param defStyleRes a resource identifier of a style resource that
 *                    supplies default values for the StyledAttributes,
 *                    used only if defStyleAttr is 0 or can not be found
 *                    in the theme
 */
public FloatingActionButton(Context context, AttributeSet attrs,
                            int defStyleAttr, int defStyleRes) {
    super(context, attrs, defStyleAttr);

    setClickable(true);

    // Set the outline provider for this view. The provider is given the
    // outline which it can then modify as needed. In this case we set the
    // outline to be an oval fitting the height and width.
    setOutlineProvider(new ViewOutlineProvider() {
        @Override
        public void getOutline(View view, Outline outline) {
            outline.setOval(0, 0, getWidth(), getHeight());
        }
    });

    // Finally, enable clipping to the outline, using the provider we set
    // above
    setClipToOutline(true);
}