blob: 099a1c86bc8733687982cc4fe87dc6f808573158 [file] [log] [blame]
* Copyright 2023 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "include/core/SkCapabilities.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSurface.h"
#include "include/utils/SkNoDrawCanvas.h"
#include "src/image/SkSurface_Base.h"
class SkCanvas;
class SkPaint;
class SkPixmap;
struct SkIRect;
struct SkSamplingOptions;
class SkNullSurface : public SkSurface_Base {
SkNullSurface(int width, int height) : SkSurface_Base(width, height, nullptr) {}
SkCanvas* onNewCanvas() override {
return new SkNoDrawCanvas(this->width(), this->height());
sk_sp<SkSurface> onNewSurface(const SkImageInfo& info) override {
return MakeNull(info.width(), info.height());
sk_sp<SkImage> onNewImageSnapshot(const SkIRect* subsetOrNull) override { return nullptr; }
void onWritePixels(const SkPixmap&, int x, int y) override {}
void onDraw(SkCanvas*, SkScalar, SkScalar, const SkSamplingOptions&, const SkPaint*) override {}
bool onCopyOnWrite(ContentChangeMode) override { return true; }
sk_sp<const SkCapabilities> onCapabilities() override {
// Not really, but we have to return *something*
return SkCapabilities::RasterBackend();
SkImageInfo imageInfo() const override {
return SkImageInfo::MakeUnknown(this->width(), this->height());
sk_sp<SkSurface> SkSurface::MakeNull(int width, int height) {
if (width < 1 || height < 1) {
return nullptr;
return sk_sp<SkSurface>(new SkNullSurface(width, height));