| /* |
| * Copyright 2020 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 androidx.ui.TestResources.testImageAsset |
| import androidx.ui.geometry.Offset |
| import androidx.ui.unit.IntOffset |
| import androidx.ui.unit.IntSize |
| import org.junit.Assert.assertEquals |
| import org.junit.Test |
| |
| class DesktopPaintTest : DesktopGraphicsTest() { |
| private val canvas: Canvas = initCanvas(widthPx = 16, heightPx = 16) |
| |
| @Test |
| fun initialParameters() { |
| val paint = Paint() |
| |
| assertEquals(Color.Black, paint.color) |
| assertEquals(1f, paint.alpha) |
| assertEquals(PaintingStyle.fill, paint.style) |
| assertEquals(0f, paint.strokeWidth) |
| assertEquals(StrokeCap.butt, paint.strokeCap) |
| assertEquals(0f, paint.strokeMiterLimit) |
| assertEquals(StrokeJoin.round, paint.strokeJoin) |
| assertEquals(true, paint.isAntiAlias) |
| assertEquals(FilterQuality.none, paint.filterQuality) |
| assertEquals(BlendMode.srcOver, paint.blendMode) |
| assertEquals(null, paint.colorFilter) |
| assertEquals(null, paint.shader) |
| } |
| |
| @Test |
| fun blendModePlus() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| canvas.drawRect(left = 4f, top = 4f, right = 12f, bottom = 12f, paint = Paint().apply { |
| color = Color.Blue |
| blendMode = BlendMode.plus |
| }) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun blendModeMultiply() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| canvas.drawRect(left = 4f, top = 4f, right = 12f, bottom = 12f, paint = Paint().apply { |
| color = Color.Gray |
| blendMode = BlendMode.multiply |
| }) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun colorFilter() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| |
| canvas.drawImage( |
| image = testImageAsset("androidx/ui/desktop/test.png"), |
| topLeftOffset = Offset(2f, 4f), |
| paint = Paint().apply { |
| colorFilter = ColorFilter(Color.Blue, BlendMode.plus) |
| } |
| ) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun filterQuality() { |
| canvas.drawImageRect( |
| image = testImageAsset("androidx/ui/desktop/test.png"), |
| srcOffset = IntOffset(0, 2), |
| srcSize = IntSize(2, 4), |
| dstOffset = IntOffset(0, 4), |
| dstSize = IntSize(4, 12), |
| paint = redPaint |
| ) |
| canvas.drawImageRect( |
| image = testImageAsset("androidx/ui/desktop/test.png"), |
| srcOffset = IntOffset(0, 2), |
| srcSize = IntSize(2, 4), |
| dstOffset = IntOffset(4, 4), |
| dstSize = IntSize(4, 12), |
| paint = redPaint.apply { |
| filterQuality = FilterQuality.low |
| } |
| ) |
| canvas.drawImageRect( |
| image = testImageAsset("androidx/ui/desktop/test.png"), |
| srcOffset = IntOffset(0, 2), |
| srcSize = IntSize(2, 4), |
| dstOffset = IntOffset(8, 4), |
| dstSize = IntSize(4, 12), |
| paint = redPaint.apply { |
| filterQuality = FilterQuality.high |
| } |
| ) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun linearGradientShader() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| |
| canvas.drawRect(left = 2f, top = 2f, right = 14f, bottom = 14f, paint = Paint().apply { |
| shader = LinearGradientShader( |
| from = Offset(0f, 0f), |
| to = Offset(6f, 6f), |
| colors = listOf(Color.Blue, Color.Green), |
| tileMode = TileMode.Mirror |
| ) |
| }) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun linearGradientShaderWithStops() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| |
| canvas.drawRect(left = 1f, top = 2f, right = 14f, bottom = 15f, paint = Paint().apply { |
| shader = LinearGradientShader( |
| from = Offset(0f, 0f), |
| to = Offset(12f, 0f), |
| colorStops = listOf(0f, 0.25f, 1f), |
| colors = listOf(Color.Blue, Color.Green, Color.Yellow), |
| tileMode = TileMode.Mirror |
| ) |
| }) |
| |
| screenshotRule.snap(surface) |
| } |
| |
| @Test |
| fun radialGradientShader() { |
| canvas.drawRect(left = 0f, top = 0f, right = 16f, bottom = 16f, paint = redPaint) |
| |
| canvas.drawRect(left = 2f, top = 2f, right = 14f, bottom = 14f, paint = Paint().apply { |
| shader = RadialGradientShader( |
| center = Offset(4f, 8f), |
| radius = 8f, |
| colors = listOf(Color.Blue, Color.Green), |
| tileMode = TileMode.Clamp |
| ) |
| }) |
| |
| screenshotRule.snap(surface) |
| } |
| } |