Move urlhandlers out of skiaserve.cpp

tools/skiaserve/urlhandlers/DownloadHandler.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 "SkPictureRecorder.h"
+#include "SkPixelSerializer.h"
+#include "../Request.h"
+#include "../Response.h"
+
+using namespace Response;
+
+bool DownloadHandler::canHandle(const char* method, const char* url) {
+    return 0 == strcmp(method, MHD_HTTP_METHOD_GET) &&
+           0 == strcmp(url, "/download");
+}
+
+int DownloadHandler::handle(Request* request, MHD_Connection* connection,
+                            const char* url, const char* method,
+                            const char* upload_data, size_t* upload_data_size) {
+    if (!request->fPicture.get()) {
+        return MHD_NO;
+    }
+
+    // TODO move to a function
+    // Playback into picture recorder
+    SkPictureRecorder recorder;
+    SkCanvas* canvas = recorder.beginRecording(Request::kImageWidth,
+                                               Request::kImageHeight);
+
+    request->fDebugCanvas->draw(canvas);
+
+    SkAutoTUnref<SkPicture> picture(recorder.endRecording());
+
+    SkDynamicMemoryWStream outStream;
+
+    SkAutoTUnref<SkPixelSerializer> serializer(SkImageEncoder::CreatePixelSerializer());
+    picture->serialize(&outStream, serializer);
+
+    SkAutoTUnref<SkData> data(outStream.copyToData());
+
+    // TODO fancier name handling
+    return SendData(connection, data, "application/octet-stream", true,
+                    "attachment; filename=something.skp;");
+}
+