88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*
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* Copyright 2016 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 "tools/skiaserve/urlhandlers/UrlHandler.h"
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#include "microhttpd.h"
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#include "tools/skiaserve/Request.h"
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#include "tools/skiaserve/Response.h"
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using namespace Response;
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bool BreakHandler::canHandle(const char* method, const char* url) {
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static const char* kBasePath = "/break";
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return 0 == strcmp(method, MHD_HTTP_METHOD_GET) &&
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0 == strncmp(url, kBasePath, strlen(kBasePath));
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}
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int BreakHandler::handle(Request* request, MHD_Connection* connection,
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const char* url, const char* method,
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const char* upload_data, size_t* upload_data_size) {
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SkTArray<SkString> commands;
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SkStrSplit(url, "/", &commands);
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if (!request->hasPicture() || commands.count() != 4) {
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return MHD_NO;
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}
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// /break/<n>/<x>/<y>
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int n;
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sscanf(commands[1].c_str(), "%d", &n);
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int x;
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sscanf(commands[2].c_str(), "%d", &x);
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int y;
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sscanf(commands[3].c_str(), "%d", &y);
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int count = request->fDebugCanvas->getSize();
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SkASSERT(n < count);
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SkCanvas* canvas = request->getCanvas();
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canvas->clear(SK_ColorWHITE);
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int saveCount = canvas->save();
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for (int i = 0; i <= n; ++i) {
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request->fDebugCanvas->getDrawCommandAt(i)->execute(canvas);
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}
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SkColor target = request->getPixel(x, y);
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SkDynamicMemoryWStream stream;
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SkJSONWriter writer(&stream, SkJSONWriter::Mode::kFast);
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writer.beginObject(); // root
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writer.appendName("startColor");
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DrawCommand::MakeJsonColor(writer, target);
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bool changed = false;
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for (int i = n + 1; i < n + count; ++i) {
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int index = i % count;
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if (index == 0) {
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// reset canvas for wraparound
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canvas->restoreToCount(saveCount);
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canvas->clear(SK_ColorWHITE);
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saveCount = canvas->save();
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}
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request->fDebugCanvas->getDrawCommandAt(index)->execute(canvas);
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SkColor current = request->getPixel(x, y);
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if (current != target) {
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writer.appendName("endColor");
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DrawCommand::MakeJsonColor(writer, current);
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writer.appendS32("endOp", index);
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changed = true;
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break;
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}
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}
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if (!changed) {
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writer.appendName("endColor");
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DrawCommand::MakeJsonColor(writer, target);
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writer.appendS32("endOp", n);
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}
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canvas->restoreToCount(saveCount);
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writer.endObject(); // root
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writer.flush();
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return SendData(connection, stream.detachAsData().get(), "application/json");
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}
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