ppapi/thunk/ppb_scrollbar_thunk.cc

   1 // Copyright (c) 2012 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/thunk/thunk.h"
   6 #include "ppapi/thunk/enter.h"
   7 #include "ppapi/thunk/ppb_scrollbar_api.h"
   8 #include "ppapi/thunk/resource_creation_api.h"
   9
  10 namespace ppapi {
  11 namespace thunk {
  12
  13 typedef EnterResource<PPB_Scrollbar_API> EnterScrollbar;
  14
  15 namespace {
  16
  17 PP_Resource Create(PP_Instance instance, PP_Bool vertical) {
  18   EnterFunction<ResourceCreationAPI> enter(instance, true);
  19   if (enter.failed())
  20     return 0;
  21   return enter.functions()->CreateScrollbar(instance, vertical);
  22 }
  23
  24 PP_Bool IsScrollbar(PP_Resource resource) {
  25   EnterScrollbar enter(resource, false);
  26   return PP_FromBool(enter.succeeded());
  27 }
  28
  29 uint32_t GetThickness(PP_Resource scrollbar) {
  30   EnterScrollbar enter(scrollbar, true);
  31   if (enter.failed())
  32     return 0;
  33   return enter.object()->GetThickness();
  34 }
  35
  36 PP_Bool IsOverlay(PP_Resource scrollbar) {
  37   EnterScrollbar enter(scrollbar, true);
  38   if (enter.failed())
  39     return PP_FALSE;
  40   return PP_FromBool(enter.object()->IsOverlay());
  41 }
  42
  43 uint32_t GetValue(PP_Resource scrollbar) {
  44   EnterScrollbar enter(scrollbar, true);
  45   if (enter.failed())
  46     return 0;
  47   return enter.object()->GetValue();
  48 }
  49
  50 void SetValue(PP_Resource scrollbar, uint32_t value) {
  51   EnterScrollbar enter(scrollbar, true);
  52   if (enter.succeeded())
  53     enter.object()->SetValue(value);
  54 }
  55
  56 void SetDocumentSize(PP_Resource scrollbar, uint32_t size) {
  57   EnterScrollbar enter(scrollbar, true);
  58   if (enter.succeeded())
  59     enter.object()->SetDocumentSize(size);
  60 }
  61
  62 void SetTickMarks(PP_Resource scrollbar,
  63                   const PP_Rect* tick_marks,
  64                   uint32_t count) {
  65   EnterScrollbar enter(scrollbar, true);
  66   if (enter.succeeded())
  67     enter.object()->SetTickMarks(tick_marks, count);
  68 }
  69
  70 void ScrollBy(PP_Resource scrollbar, PP_ScrollBy_Dev unit, int32_t multiplier) {
  71   EnterScrollbar enter(scrollbar, true);
  72   if (enter.succeeded())
  73     enter.object()->ScrollBy(unit, multiplier);
  74 }
  75
  76 const PPB_Scrollbar_Dev g_ppb_scrollbar_thunk = {
  77   &Create,
  78   &IsScrollbar,
  79   &GetThickness,
  80   &IsOverlay,
  81   &GetValue,
  82   &SetValue,
  83   &SetDocumentSize,
  84   &SetTickMarks,
  85   &ScrollBy
  86 };
  87
  88 }  // namespace
  89
  90 const PPB_Scrollbar_Dev_0_5* GetPPB_Scrollbar_Dev_0_5_Thunk() {
  91   return &g_ppb_scrollbar_thunk;
  92 }
  93
  94 }  // namespace thunk
  95 }  // namespace ppapi