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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "BisectSlide.h"
#include "SkOSPath.h"
#include "SkPicture.h"
#include "SkStream.h"
#include <utility>
#ifdef SK_XML
#include "SkDOM.h"
#include "../experimental/svg/model/SkSVGDOM.h"
#endif
sk_sp<BisectSlide> BisectSlide::Create(const char filepath[]) {
SkFILEStream stream(filepath);
if (!stream.isValid()) {
SkDebugf("BISECT: invalid input file at \"%s\"\n", filepath);
return nullptr;
}
sk_sp<BisectSlide> bisect(new BisectSlide(filepath));
if (bisect->fFilePath.endsWith(".svg")) {
#ifdef SK_XML
SkDOM xml;
if (!xml.build(stream)) {
SkDebugf("BISECT: XML parsing failed: \"%s\"\n", filepath);
return nullptr;
}
sk_sp<SkSVGDOM> svg = SkSVGDOM::MakeFromDOM(xml);
if (!svg) {
SkDebugf("BISECT: couldn't load svg at \"%s\"\n", filepath);
return nullptr;
}
svg->setContainerSize(SkSize::Make(bisect->getDimensions()));
svg->render(bisect.get());
#else
return nullptr;
#endif
} else {
sk_sp<SkPicture> skp = SkPicture::MakeFromStream(&stream);
if (!skp) {
SkDebugf("BISECT: couldn't load skp at \"%s\"\n", filepath);
return nullptr;
}
skp->playback(bisect.get());
}
return bisect;
}
BisectSlide::BisectSlide(const char filepath[])
: SkCanvas(4096, 4096, nullptr)
, fFilePath(filepath) {
const char* basename = strrchr(fFilePath.c_str(), SkOSPath::SEPARATOR);
fName.printf("BISECT_%s", basename ? basename + 1 : fFilePath.c_str());
}
// Called through SkPicture::playback only during creation.
void BisectSlide::onDrawPath(const SkPath& path, const SkPaint& paint) {
SkRect bounds;
SkIRect ibounds;
this->getTotalMatrix().mapRect(&bounds, path.getBounds());
bounds.roundOut(&ibounds);
fDrawBounds.join(ibounds);
fFoundPaths.push_back() = {path, paint, this->getTotalMatrix()};
}
bool BisectSlide::onChar(SkUnichar c) {
switch (c) {
case 'X':
if (!fTossedPaths.empty()) {
using std::swap;
swap(fFoundPaths, fTossedPaths);
if ('X' == fTrail.back()) {
fTrail.pop_back();
} else {
fTrail.push_back('X');
}
}
return true;
case 'x':
if (fFoundPaths.count() > 1) {
int midpt = (fFoundPaths.count() + 1) / 2;
fPathHistory.emplace(fFoundPaths, fTossedPaths);
fTossedPaths.reset(fFoundPaths.begin() + midpt, fFoundPaths.count() - midpt);
fFoundPaths.resize_back(midpt);
fTrail.push_back('x');
}
return true;
case 'Z': {
if (!fPathHistory.empty()) {
fFoundPaths = fPathHistory.top().first;
fTossedPaths = fPathHistory.top().second;
fPathHistory.pop();
char ch;
do {
ch = fTrail.back();
fTrail.pop_back();
} while (ch != 'x');
}
return true;
}
case 'D':
SkDebugf("viewer --bisect %s", fFilePath.c_str());
if (!fTrail.empty()) {
SkDebugf(" ");
for (char ch : fTrail) {
SkDebugf("%c", ch);
}
}
SkDebugf("\n");
for (const FoundPath& foundPath : fFoundPaths) {
foundPath.fPath.dump();
}
return true;
}
return false;
}
void BisectSlide::draw(SkCanvas* canvas) {
SkAutoCanvasRestore acr(canvas, true);
canvas->translate(-fDrawBounds.left(), -fDrawBounds.top());
for (const FoundPath& path : fFoundPaths) {
SkAutoCanvasRestore acr(canvas, true);
canvas->concat(path.fViewMatrix);
canvas->drawPath(path.fPath, path.fPaint);
}
}
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