Move urlhandlers out of skiaserve.cpp

tools/skiaserve/urlhandlers/InfoHandler.cpp

+/*
+ * 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 "SkJSONCanvas.h"
+#include "../Request.h"
+#include "../Response.h"
+
+using namespace Response;
+
+bool InfoHandler::canHandle(const char* method, const char* url) {
+    const char* kBaseName = "/info";
+    return 0 == strcmp(method, MHD_HTTP_METHOD_GET) &&
+           0 == strncmp(url, kBaseName, strlen(kBaseName));
+}
+
+int InfoHandler::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->fPicture.get() || commands.count() > 2) {
+        return MHD_NO;
+    }
+
+    // drawTo
+    SkAutoTUnref<SkSurface> surface(request->createCPUSurface());
+    SkCanvas* canvas = surface->getCanvas();
+
+    int n;
+    // /info or /info/N
+    if (commands.count() == 1) {
+        n = request->fDebugCanvas->getSize() - 1;
+    } else {
+        sscanf(commands[1].c_str(), "%d", &n);
+    }
+
+    // TODO this is really slow and we should cache the matrix and clip
+    request->fDebugCanvas->drawTo(canvas, n);
+
+    // make some json
+    SkMatrix vm = request->fDebugCanvas->getCurrentMatrix();
+    SkIRect clip = request->fDebugCanvas->getCurrentClip();
+    Json::Value info(Json::objectValue);
+    info["ViewMatrix"] = SkJSONCanvas::MakeMatrix(vm);
+    info["ClipRect"] = SkJSONCanvas::MakeIRect(clip);
+
+    std::string json = Json::FastWriter().write(info);
+
+    // We don't want the null terminator so strlen is correct
+    SkAutoTUnref<SkData> data(SkData::NewWithCopy(json.c_str(), strlen(json.c_str())));
+    return SendData(connection, data, "application/json");
+}
+