| /* |
| * Copyright 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.ui.graphics |
| |
| import android.graphics.BitmapShader |
| import android.graphics.LinearGradient |
| import android.graphics.RadialGradient |
| import androidx.compose.InternalComposeApi |
| import androidx.ui.geometry.Offset |
| |
| actual typealias Shader = android.graphics.Shader |
| |
| @Suppress("DEPRECATION_ERROR") |
| @OptIn(InternalComposeApi::class) |
| internal actual fun ActualLinearGradientShader( |
| from: Offset, |
| to: Offset, |
| colors: List<Color>, |
| colorStops: List<Float>?, |
| tileMode: TileMode |
| ): Shader = GraphicsFactory.Shader.linear( |
| from, to, colors, colorStops, tileMode |
| ) |
| |
| @Suppress("DEPRECATION_ERROR") |
| @OptIn(InternalComposeApi::class) |
| internal actual fun ActualRadialGradientShader( |
| center: Offset, |
| radius: Float, |
| colors: List<Color>, |
| colorStops: List<Float>?, |
| tileMode: TileMode |
| ): Shader = GraphicsFactory.Shader.radial( |
| center, radius, colors, colorStops, tileMode |
| ) |
| |
| @Suppress("DEPRECATION_ERROR") |
| @OptIn(InternalComposeApi::class) |
| internal actual fun ActualImageShader( |
| image: ImageAsset, |
| tileModeX: TileMode, |
| tileModeY: TileMode |
| ): Shader = GraphicsFactory.Shader.image( |
| image, tileModeX, tileModeY |
| ) |
| |
| internal fun AndroidLinearGradientShader( |
| from: Offset, |
| to: Offset, |
| colors: List<Color>, |
| colorStops: List<Float>?, |
| tileMode: TileMode |
| ): Shader { |
| validateColorStops(colors, colorStops) |
| return LinearGradient( |
| from.x, |
| from.y, |
| to.x, |
| to.y, |
| colors.toIntArray(), |
| colorStops?.toFloatArray(), |
| tileMode.toNativeTileMode() |
| ) |
| } |
| |
| internal fun AndroidRadialGradientShader( |
| center: Offset, |
| radius: Float, |
| colors: List<Color>, |
| colorStops: List<Float>?, |
| tileMode: TileMode |
| ): Shader { |
| validateColorStops(colors, colorStops) |
| return RadialGradient( |
| center.x, |
| center.y, |
| radius, |
| colors.toIntArray(), |
| colorStops?.toFloatArray(), |
| tileMode.toNativeTileMode() |
| ) |
| } |
| |
| internal fun AndroidImageShader( |
| image: ImageAsset, |
| tileModeX: TileMode, |
| tileModeY: TileMode |
| ): Shader { |
| return BitmapShader( |
| image.asAndroidBitmap(), |
| tileModeX.toNativeTileMode(), |
| tileModeY.toNativeTileMode() |
| ) |
| } |
| |
| private fun List<Color>.toIntArray(): IntArray = |
| IntArray(size) { i -> this[i].toArgb() } |
| |
| private fun validateColorStops(colors: List<Color>, colorStops: List<Float>?) { |
| if (colorStops == null) { |
| if (colors.size < 2) { |
| throw IllegalArgumentException( |
| "colors must have length of at least 2 if colorStops " + |
| "is omitted." |
| ) |
| } |
| } else if (colors.size != colorStops.size) { |
| throw IllegalArgumentException( |
| "colors and colorStops arguments must have" + |
| " equal length." |
| ) |
| } |
| } |