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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkSurface.h"
- #include "include/core/SkTypes.h"
- #include "tools/sk_app/RasterWindowContext.h"
- #include "tools/sk_app/android/WindowContextFactory_android.h"
- using sk_app::RasterWindowContext;
- using sk_app::DisplayParams;
- namespace {
- class RasterWindowContext_android : public RasterWindowContext {
- public:
- RasterWindowContext_android(ANativeWindow*, const DisplayParams& params);
- sk_sp<SkSurface> getBackbufferSurface() override;
- void swapBuffers() override;
- bool isValid() override { return SkToBool(fNativeWindow); }
- void resize(int w, int h) override;
- void setDisplayParams(const DisplayParams& params) override;
- private:
- void setBuffersGeometry();
- sk_sp<SkSurface> fBackbufferSurface = nullptr;
- ANativeWindow* fNativeWindow = nullptr;
- ANativeWindow_Buffer fBuffer;
- ARect fBounds;
- typedef RasterWindowContext INHERITED;
- };
- RasterWindowContext_android::RasterWindowContext_android(ANativeWindow* window,
- const DisplayParams& params)
- : INHERITED(params) {
- fNativeWindow = window;
- fWidth = ANativeWindow_getWidth(fNativeWindow);
- fHeight = ANativeWindow_getHeight(fNativeWindow);
- this->setBuffersGeometry();
- }
- void RasterWindowContext_android::setBuffersGeometry() {
- int32_t format = 0;
- switch(fDisplayParams.fColorType) {
- case kRGBA_8888_SkColorType:
- format = WINDOW_FORMAT_RGBA_8888;
- break;
- case kRGB_565_SkColorType:
- format = WINDOW_FORMAT_RGB_565;
- break;
- default:
- SK_ABORT("Unsupported Android color type");
- }
- ANativeWindow_setBuffersGeometry(fNativeWindow, fWidth, fHeight, format);
- }
- void RasterWindowContext_android::setDisplayParams(const DisplayParams& params) {
- fDisplayParams = params;
- this->setBuffersGeometry();
- }
- void RasterWindowContext_android::resize(int w, int h) {
- fWidth = w;
- fHeight = h;
- this->setBuffersGeometry();
- }
- sk_sp<SkSurface> RasterWindowContext_android::getBackbufferSurface() {
- if (nullptr == fBackbufferSurface) {
- ANativeWindow_lock(fNativeWindow, &fBuffer, &fBounds);
- const int bytePerPixel = fBuffer.format == WINDOW_FORMAT_RGB_565 ? 2 : 4;
- SkImageInfo info = SkImageInfo::Make(fWidth, fHeight,
- fDisplayParams.fColorType,
- kPremul_SkAlphaType,
- fDisplayParams.fColorSpace);
- fBackbufferSurface = SkSurface::MakeRasterDirect(
- info, fBuffer.bits, fBuffer.stride * bytePerPixel, nullptr);
- }
- return fBackbufferSurface;
- }
- void RasterWindowContext_android::swapBuffers() {
- ANativeWindow_unlockAndPost(fNativeWindow);
- fBackbufferSurface.reset(nullptr);
- }
- } // anonymous namespace
- namespace sk_app {
- namespace window_context_factory {
- WindowContext* NewRasterForAndroid(ANativeWindow* window, const DisplayParams& params) {
- WindowContext* ctx = new RasterWindowContext_android(window, params);
- if (!ctx->isValid()) {
- delete ctx;
- return nullptr;
- }
- return ctx;
- }
- }
- } // namespace sk_app
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