| /* |
| * Copyright (C) 2016 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. |
| */ |
| |
| #include "TestSceneBase.h" |
| #include "tests/common/TestListViewSceneBase.h" |
| #include "hwui/Paint.h" |
| #include <SkGradientShader.h> |
| |
| class ListOfFadedTextAnimation; |
| |
| static TestScene::Registrar _ListOfFadedTextAnimation(TestScene::Info{ |
| "fadingedges", |
| "A mock ListView of scrolling text with faded edge. Doesn't re-bind/re-record views" |
| "as they are recycled, so won't upload much content (either glyphs, or bitmaps).", |
| TestScene::simpleCreateScene<ListOfFadedTextAnimation>}); |
| |
| class ListOfFadedTextAnimation : public TestListViewSceneBase { |
| void createListItem(RenderProperties& props, Canvas& canvas, int id, int itemWidth, |
| int itemHeight) override { |
| canvas.drawColor(Color::White, SkBlendMode::kSrcOver); |
| int length = dp(100); |
| canvas.saveLayer(0, 0, length, itemHeight, nullptr, SaveFlags::HasAlphaLayer); |
| Paint textPaint; |
| textPaint.getSkFont().setSize(dp(20)); |
| textPaint.setAntiAlias(true); |
| TestUtils::drawUtf8ToCanvas(&canvas, "not that long long text", textPaint, dp(10), dp(30)); |
| |
| SkPoint pts[2]; |
| pts[0].set(0, 0); |
| pts[1].set(0, 1); |
| |
| SkColor colors[2] = {Color::Black, Color::Transparent}; |
| sk_sp<SkShader> s( |
| SkGradientShader::MakeLinear(pts, colors, NULL, 2, SkShader::kClamp_TileMode)); |
| |
| SkMatrix matrix; |
| matrix.setScale(1, length); |
| matrix.postRotate(-90); |
| SkPaint fadingPaint; |
| fadingPaint.setShader(s->makeWithLocalMatrix(matrix)); |
| fadingPaint.setBlendMode(SkBlendMode::kDstOut); |
| canvas.drawRect(0, 0, length, itemHeight, fadingPaint); |
| canvas.restore(); |
| } |
| }; |