iTOP4412|Android-4.0.3

code•2022-5-6•python•阅读44

0 前言

APP绘图离不开Canvas，它支持硬件加速（OpenGL），本文对其底层实现进行深入分析。

1 Canvas

Java层封装了Skia Canvas

图1.1 android-4.0.3_r1 Canvas

Canvas

frameworks/base/graphics/java/android/graphics/Canvas.java

frameworks/base/core/jni/android/graphics/Canvas.cpp

CompatibleCanvas

frameworks/base/core/java/android/view/Surface.java

RecordingCanvas

frameworks/base/graphics/java/android/graphics/Picture.java

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