1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkColor.h" 9 10 struct MHD_Connection; 11 struct Request; 12 13 class UrlHandler { 14 public: ~UrlHandler()15 virtual ~UrlHandler() {} 16 virtual bool canHandle(const char* method, const char* url) = 0; 17 virtual int handle(Request* request, MHD_Connection* connection, 18 const char* url, const char* method, 19 const char* upload_data, size_t* upload_data_size) = 0; 20 }; 21 22 class CmdHandler : public UrlHandler { 23 public: 24 bool canHandle(const char* method, const char* url) override; 25 int handle(Request* request, MHD_Connection* connection, 26 const char* url, const char* method, 27 const char* upload_data, size_t* upload_data_size) override; 28 }; 29 30 class ImgHandler : public UrlHandler { 31 public: 32 bool canHandle(const char* method, const char* url) override; 33 int handle(Request* request, MHD_Connection* connection, 34 const char* url, const char* method, 35 const char* upload_data, size_t* upload_data_size) override; 36 }; 37 38 class BreakHandler : public UrlHandler { 39 public: 40 bool canHandle(const char* method, const char* url) override; 41 int handle(Request* request, MHD_Connection* connection, 42 const char* url, const char* method, 43 const char* upload_data, size_t* upload_data_size) override; 44 private: 45 static SkColor GetPixel(Request* request, int x, int y); 46 }; 47 48 /** 49 Updates the clip visualization alpha. On all subsequent /img requests, the clip will be drawn in 50 black with the specified alpha. 0 = no visible clip, 255 = fully opaque clip. 51 */ 52 class ClipAlphaHandler : public UrlHandler { 53 public: 54 bool canHandle(const char* method, const char* url) override; 55 int handle(Request* request, MHD_Connection* connection, 56 const char* url, const char* method, 57 const char* upload_data, size_t* upload_data_size) override; 58 }; 59 60 /** 61 Controls whether GPU rendering is enabled. Posting to /enableGPU/1 turns GPU on, /enableGPU/0 62 disables it. 63 */ 64 class EnableGPUHandler : public UrlHandler { 65 public: 66 bool canHandle(const char* method, const char* url) override; 67 int handle(Request* request, MHD_Connection* connection, 68 const char* url, const char* method, 69 const char* upload_data, size_t* upload_data_size) override; 70 }; 71 72 class PostHandler : public UrlHandler { 73 public: 74 bool canHandle(const char* method, const char* url) override; 75 int handle(Request* request, MHD_Connection* connection, 76 const char* url, const char* method, 77 const char* upload_data, size_t* upload_data_size) override; 78 }; 79 80 class DownloadHandler : public UrlHandler { 81 public: 82 bool canHandle(const char* method, const char* url) override; 83 int handle(Request* request, MHD_Connection* connection, 84 const char* url, const char* method, 85 const char* upload_data, size_t* upload_data_size) override; 86 }; 87 88 class InfoHandler : public UrlHandler { 89 public: 90 bool canHandle(const char* method, const char* url) override; 91 int handle(Request* request, MHD_Connection* connection, 92 const char* url, const char* method, 93 const char* upload_data, size_t* upload_data_size) override; 94 }; 95 96 class DataHandler : public UrlHandler { 97 public: 98 bool canHandle(const char* method, const char* url) override; 99 int handle(Request* request, MHD_Connection* connection, 100 const char* url, const char* method, 101 const char* upload_data, size_t* upload_data_size) override; 102 }; 103 104 class RootHandler : public UrlHandler { 105 public: 106 bool canHandle(const char* method, const char* url) override; 107 int handle(Request* request, MHD_Connection* connection, 108 const char* url, const char* method, 109 const char* upload_data, size_t* upload_data_size) override; 110 }; 111 112