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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "Resources.h"
#include "sk_tool_utils.h"
#include "SkCanvas.h"
#include "SkImageSource.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkSerialProcs.h"
#include "SkSurface.h"
static sk_sp<SkImage> picture_to_image(sk_sp<SkPicture> pic) {
SkIRect r = pic->cullRect().round();
auto surf = SkSurface::MakeRasterN32Premul(r.width(), r.height());
surf->getCanvas()->drawPicture(pic);
return surf->makeImageSnapshot();
}
struct State {
const char* fStr;
SkImage* fImg;
};
DEF_TEST(serial_procs_image, reporter) {
auto src_img = GetResourceAsImage("images/mandrill_128.png");
const char magic_str[] = "magic signature";
const SkSerialImageProc sprocs[] = {
[](SkImage* img, void* ctx) -> sk_sp<SkData> { return nullptr; },
[](SkImage* img, void* ctx) { return img->encodeToData(); },
[](SkImage* img, void* ctx) { return SkData::MakeWithCString(((State*)ctx)->fStr); },
};
const SkDeserialImageProc dprocs[] = {
[](const void* data, size_t length, void*) -> sk_sp<SkImage> {
return nullptr;
},
[](const void* data, size_t length, void*) {
return SkImage::MakeFromEncoded(SkData::MakeWithCopy(data, length));
},
[](const void* data, size_t length, void* ctx) -> sk_sp<SkImage> {
State* state = (State*)ctx;
if (length != strlen(state->fStr)+1 || memcmp(data, state->fStr, length)) {
return nullptr;
}
return sk_ref_sp(state->fImg);
},
};
sk_sp<SkPicture> pic;
{
SkPictureRecorder rec;
SkCanvas* canvas = rec.beginRecording(128, 128);
canvas->drawImage(src_img, 0, 0, nullptr);
pic = rec.finishRecordingAsPicture();
}
State state = { magic_str, src_img.get() };
SkSerialProcs sproc;
sproc.fImageCtx = &state;
SkDeserialProcs dproc;
dproc.fImageCtx = &state;
for (size_t i = 0; i < SK_ARRAY_COUNT(sprocs); ++i) {
sproc.fImageProc = sprocs[i];
auto data = pic->serialize(&sproc);
REPORTER_ASSERT(reporter, data);
dproc.fImageProc = dprocs[i];
auto new_pic = SkPicture::MakeFromData(data.get(), &dproc);
REPORTER_ASSERT(reporter, data);
auto dst_img = picture_to_image(new_pic);
REPORTER_ASSERT(reporter, sk_tool_utils::equal_pixels(src_img.get(), dst_img.get()));
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
static sk_sp<SkPicture> make_pic(const std::function<void(SkCanvas*)>& drawer) {
SkPictureRecorder rec;
drawer(rec.beginRecording(128, 128));
return rec.finishRecordingAsPicture();
}
static SkSerialProcs makes(SkSerialPictureProc proc, void* ctx = nullptr) {
SkSerialProcs procs;
procs.fPictureProc = proc;
procs.fPictureCtx = ctx;
return procs;
}
static SkDeserialProcs maked(SkDeserialPictureProc proc, const void* ctx = nullptr) {
SkDeserialProcs procs;
procs.fPictureProc = proc;
procs.fPictureCtx = const_cast<void*>(ctx);
return procs;
}
// packages the picture's point in the skdata, and records it in the ctx as an array
struct Context {
SkTDArray<SkPicture*> fArray;
SkPicture* fSkipMe = nullptr;
};
static sk_sp<SkData> array_serial_proc(SkPicture* pic, void* ctx) {
Context* c = (Context*)ctx;
if (c->fSkipMe == pic) {
return nullptr;
}
*c->fArray.append() = pic;
return SkData::MakeWithCopy(&pic, sizeof(pic));
}
static sk_sp<SkPicture> array_deserial_proc(const void* data, size_t size, void* ctx) {
SkASSERT(sizeof(SkPicture*) == size);
Context* c = (Context*)ctx;
SkPicture* pic;
memcpy(&pic, data, size);
int index = c->fArray.find(pic);
SkASSERT(index >= 0);
c->fArray.removeShuffle(index);
return sk_ref_sp(pic);
}
static void test_pictures(skiatest::Reporter* reporter, sk_sp<SkPicture> p0, int count,
bool skipRoot) {
Context ctx;
if (skipRoot) {
ctx.fSkipMe = p0.get();
}
SkSerialProcs sprocs = makes(array_serial_proc, &ctx);
auto d0 = p0->serialize(&sprocs);
REPORTER_ASSERT(reporter, ctx.fArray.count() == count);
SkDeserialProcs dprocs = maked(array_deserial_proc, &ctx);
p0 = SkPicture::MakeFromData(d0.get(), &dprocs);
REPORTER_ASSERT(reporter, ctx.fArray.count() == 0);
}
DEF_TEST(serial_procs_picture, reporter) {
auto p1 = make_pic([](SkCanvas* c) {
// need to be large enough that drawPictures doesn't "unroll" us
for (int i = 0; i < 20; ++i) {
c->drawColor(SK_ColorRED);
}
});
// now use custom serialization
auto p0 = make_pic([](SkCanvas* c) { c->drawColor(SK_ColorBLUE); });
test_pictures(reporter, p0, 1, false);
// test inside effect
p0 = make_pic([p1](SkCanvas* c) {
SkPaint paint;
SkShader::TileMode tm = SkShader::kClamp_TileMode;
paint.setShader(SkShader::MakePictureShader(p1, tm, tm, nullptr, nullptr));
c->drawPaint(paint);
});
test_pictures(reporter, p0, 1, true);
// test nested picture
p0 = make_pic([p1](SkCanvas* c) {
c->drawColor(SK_ColorRED);
c->drawPicture(p1);
c->drawColor(SK_ColorBLUE);
});
test_pictures(reporter, p0, 1, true);
}
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