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