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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 "tools/viewer/BisectSlide.h"
- #include "include/core/SkPicture.h"
- #include "include/core/SkStream.h"
- #include "src/utils/SkOSPath.h"
- #include <utility>
- #ifdef SK_XML
- #include "experimental/svg/model/SkSVGDOM.h"
- #include "src/xml/SkDOM.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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