ppapi/cpp/dev/zoom_dev.cc

   1 // Copyright (c) 2010 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 "ppapi/cpp/dev/zoom_dev.h"
   6
   7 #include "ppapi/c/dev/ppb_zoom_dev.h"
   8 #include "ppapi/cpp/instance.h"
   9 #include "ppapi/cpp/instance_handle.h"
  10 #include "ppapi/cpp/module.h"
  11 #include "ppapi/cpp/module_impl.h"
  12
  13 namespace pp {
  14
  15 namespace {
  16
  17 static const char kPPPZoomInterface[] = PPP_ZOOM_DEV_INTERFACE;
  18
  19 void Zoom(PP_Instance instance,
  20           double factor,
  21           PP_Bool text_only) {
  22   void* object = Instance::GetPerInstanceObject(instance, kPPPZoomInterface);
  23   if (!object)
  24     return;
  25   static_cast<Zoom_Dev*>(object)->Zoom(factor, PP_ToBool(text_only));
  26 }
  27
  28 const PPP_Zoom_Dev ppp_zoom = {
  29   &Zoom
  30 };
  31
  32 template <> const char* interface_name<PPB_Zoom_Dev>() {
  33   return PPB_ZOOM_DEV_INTERFACE;
  34 }
  35
  36 }  // namespace
  37
  38 Zoom_Dev::Zoom_Dev(Instance* instance) : associated_instance_(instance) {
  39   Module::Get()->AddPluginInterface(kPPPZoomInterface, &ppp_zoom);
  40   instance->AddPerInstanceObject(kPPPZoomInterface, this);
  41 }
  42
  43 Zoom_Dev::~Zoom_Dev() {
  44   Instance::RemovePerInstanceObject(associated_instance_,
  45                                     kPPPZoomInterface, this);
  46 }
  47
  48 void Zoom_Dev::ZoomChanged(double factor) {
  49   if (has_interface<PPB_Zoom_Dev>())
  50     get_interface<PPB_Zoom_Dev>()->ZoomChanged(
  51         associated_instance_.pp_instance(), factor);
  52 }
  53
  54 void Zoom_Dev::ZoomLimitsChanged(double minimum_factor,
  55                                  double maximium_factor) {
  56   if (!has_interface<PPB_Zoom_Dev>())
  57     return;
  58   get_interface<PPB_Zoom_Dev>()->ZoomLimitsChanged(
  59       associated_instance_.pp_instance(), minimum_factor, maximium_factor);
  60 }
  61
  62 }  // namespace pp