ddb80bebb0
This change also adds full support for local transformation matrices on sweep and radial gradients. Change-Id: Id8773bc0766575190e3f3d51984fc5e57b266c3f
76 lines
3.6 KiB
Java
76 lines
3.6 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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public class RadialGradient extends Shader {
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/** Create a shader that draws a radial gradient given the center and radius.
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@param x The x-coordinate of the center of the radius
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@param y The y-coordinate of the center of the radius
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@param radius Must be positive. The radius of the circle for this gradient
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@param colors The colors to be distributed between the center and edge of the circle
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@param positions May be NULL. The relative position of
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each corresponding color in the colors array. If this is NULL,
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the the colors are distributed evenly between the center and edge of the circle.
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@param tile The Shader tiling mode
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*/
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public RadialGradient(float x, float y, float radius,
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int colors[], float positions[], TileMode tile) {
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if (radius <= 0) {
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throw new IllegalArgumentException("radius must be > 0");
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}
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if (colors.length < 2) {
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throw new IllegalArgumentException("needs >= 2 number of colors");
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}
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if (positions != null && colors.length != positions.length) {
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throw new IllegalArgumentException("color and position arrays must be of equal length");
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}
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native_instance = nativeCreate1(x, y, radius, colors, positions, tile.nativeInt);
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native_shader = nativePostCreate1(native_instance, x, y, radius, colors, positions,
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tile.nativeInt);
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}
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/** Create a shader that draws a radial gradient given the center and radius.
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@param x The x-coordinate of the center of the radius
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@param y The y-coordinate of the center of the radius
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@param radius Must be positive. The radius of the circle for this gradient
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@param color0 The color at the center of the circle.
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@param color1 The color at the edge of the circle.
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@param tile The Shader tiling mode
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*/
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public RadialGradient(float x, float y, float radius,
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int color0, int color1, TileMode tile) {
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if (radius <= 0) {
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throw new IllegalArgumentException("radius must be > 0");
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}
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native_instance = nativeCreate2(x, y, radius, color0, color1, tile.nativeInt);
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native_shader = nativePostCreate2(native_instance, x, y, radius, color0, color1,
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tile.nativeInt);
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}
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private static native int nativeCreate1(float x, float y, float radius,
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int colors[], float positions[], int tileMode);
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private static native int nativeCreate2(float x, float y, float radius,
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int color0, int color1, int tileMode);
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private static native int nativePostCreate1(int native_shader, float x, float y, float radius,
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int colors[], float positions[], int tileMode);
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private static native int nativePostCreate2(int native_shader, float x, float y, float radius,
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int color0, int color1, int tileMode);
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}
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