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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 "UrlHandler.h"
#include "microhttpd.h"
#include "../Request.h"
#include "../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);
Json::Value response(Json::objectValue);
Json::Value startColor(Json::arrayValue);
startColor.append(Json::Value(SkColorGetR(target)));
startColor.append(Json::Value(SkColorGetG(target)));
startColor.append(Json::Value(SkColorGetB(target)));
startColor.append(Json::Value(SkColorGetA(target)));
response["startColor"] = startColor;
response["endColor"] = startColor;
response["endOp"] = Json::Value(n);
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) {
Json::Value endColor(Json::arrayValue);
endColor.append(Json::Value(SkColorGetR(current)));
endColor.append(Json::Value(SkColorGetG(current)));
endColor.append(Json::Value(SkColorGetB(current)));
endColor.append(Json::Value(SkColorGetA(current)));
response["endColor"] = endColor;
response["endOp"] = Json::Value(index);
break;
}
}
canvas->restoreToCount(saveCount);
SkDynamicMemoryWStream stream;
stream.writeText(Json::FastWriter().write(response).c_str());
return SendData(connection, stream.detachAsData().get(), "application/json");
}
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