1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "TestSceneBase.h"
18 #include "utils/Color.h"
19 
20 class TextAnimation;
21 
22 static TestScene::Registrar _Text(TestScene::Info{
23     "text",
24     "Draws a bunch of text.",
25     TestScene::simpleCreateScene<TextAnimation>
26 });
27 
28 class TextAnimation : public TestScene {
29 public:
30     sp<RenderNode> card;
createContent(int width,int height,TestCanvas & canvas)31     void createContent(int width, int height, TestCanvas& canvas) override {
32         canvas.drawColor(Color::White, SkXfermode::kSrcOver_Mode);
33         card = TestUtils::createNode(0, 0, width, height,
34                 [](RenderProperties& props, TestCanvas& canvas) {
35             SkPaint paint;
36             paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
37             paint.setAntiAlias(true);
38             paint.setTextSize(50);
39 
40             paint.setColor(Color::Black);
41             for (int i = 0; i < 10; i++) {
42                 TestUtils::drawUtf8ToCanvas(&canvas, "Test string", paint, 400, i * 100);
43             }
44 
45             SkPath path;
46             path.addOval(SkRect::MakeLTRB(100, 100, 300, 300));
47 
48             paint.setColor(Color::Blue_500);
49             TestUtils::drawUtf8ToCanvas(&canvas, "This is a neat circle of text!", paint, path);
50         });
51         canvas.drawRenderNode(card.get());
52     }
53 
doFrame(int frameNr)54     void doFrame(int frameNr) override {
55         int curFrame = frameNr % 150;
56         card->mutateStagingProperties().setTranslationX(curFrame);
57         card->mutateStagingProperties().setTranslationY(curFrame);
58         card->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
59     }
60 };
61