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