src/content/renderer/pepper/pepper_truetype_font_host.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/pepper/pepper_truetype_font_host.h"
   6
   7 #include "base/bind.h"
   8 #include "content/public/renderer/renderer_ppapi_host.h"
   9 #include "content/renderer/pepper/pepper_truetype_font.h"
  10 #include "ppapi/c/pp_errors.h"
  11 #include "ppapi/host/dispatch_host_message.h"
  12 #include "ppapi/host/host_message_context.h"
  13 #include "ppapi/host/ppapi_host.h"
  14 #include "ppapi/proxy/ppapi_messages.h"
  15
  16 using ppapi::host::HostMessageContext;
  17 using ppapi::host::ReplyMessageContext;
  18
  19 namespace content {
  20
  21 PepperTrueTypeFontHost::PepperTrueTypeFontHost(
  22     RendererPpapiHost* host,
  23     PP_Instance instance,
  24     PP_Resource resource,
  25     const ppapi::proxy::SerializedTrueTypeFontDesc& desc)
  26     : ResourceHost(host->GetPpapiHost(), instance, resource),
  27       renderer_ppapi_host_(host),
  28       font_(PepperTrueTypeFont::Create(desc)),
  29       weak_factory_(this) {}
  30
  31 PepperTrueTypeFontHost::~PepperTrueTypeFontHost() {}
  32
  33 int32_t PepperTrueTypeFontHost::OnResourceMessageReceived(
  34     const IPC::Message& msg,
  35     HostMessageContext* context) {
  36   if (!host()->permissions().HasPermission(ppapi::PERMISSION_DEV))
  37     return PP_ERROR_FAILED;
  38
  39   PPAPI_BEGIN_MESSAGE_MAP(PepperTrueTypeFontHost, msg)
  40     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_TrueTypeFont_Describe,
  41                                         OnHostMsgDescribe)
  42     PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_TrueTypeFont_GetTableTags,
  43                                         OnHostMsgGetTableTags)
  44     PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_TrueTypeFont_GetTable,
  45                                       OnHostMsgGetTable)
  46   PPAPI_END_MESSAGE_MAP()
  47   return PP_ERROR_FAILED;
  48 }
  49
  50 int32_t PepperTrueTypeFontHost::OnHostMsgDescribe(HostMessageContext* context) {
  51   if (!font_->IsValid())
  52     return PP_ERROR_FAILED;
  53
  54   ppapi::proxy::SerializedTrueTypeFontDesc desc;
  55   ReplyMessageContext reply_context = context->MakeReplyMessageContext();
  56   reply_context.params.set_result(font_->Describe(&desc));
  57   host()->SendReply(reply_context,
  58                     PpapiPluginMsg_TrueTypeFont_DescribeReply(desc));
  59   return PP_OK_COMPLETIONPENDING;
  60 }
  61
  62 int32_t PepperTrueTypeFontHost::OnHostMsgGetTableTags(
  63     HostMessageContext* context) {
  64   if (!font_->IsValid())
  65     return PP_ERROR_FAILED;
  66
  67   std::vector<uint32_t> tags;
  68   ReplyMessageContext reply_context = context->MakeReplyMessageContext();
  69   reply_context.params.set_result(font_->GetTableTags(&tags));
  70   host()->SendReply(reply_context,
  71                     PpapiPluginMsg_TrueTypeFont_GetTableTagsReply(tags));
  72   return PP_OK_COMPLETIONPENDING;
  73 }
  74
  75 int32_t PepperTrueTypeFontHost::OnHostMsgGetTable(HostMessageContext* context,
  76                                                   uint32_t table,
  77                                                   int32_t offset,
  78                                                   int32_t max_data_length) {
  79   if (!font_->IsValid())
  80     return PP_ERROR_FAILED;
  81   if (offset < 0 || max_data_length < 0)
  82     return PP_ERROR_BADARGUMENT;
  83
  84   std::string data;
  85   ReplyMessageContext reply_context = context->MakeReplyMessageContext();
  86   reply_context.params.set_result(
  87       font_->GetTable(table, offset, max_data_length, &data));
  88   host()->SendReply(reply_context,
  89                     PpapiPluginMsg_TrueTypeFont_GetTableReply(data));
  90   return PP_OK_COMPLETIONPENDING;
  91 }
  92
  93 }  // namespace content