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