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      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/shared_impl/ppb_view_shared.h"
      6 
      7 namespace {
      8 
      9 bool IsRectNonempty(const PP_Rect& rect) {
     10   return rect.size.width > 0 && rect.size.height > 0;
     11 }
     12 
     13 }  // namespace
     14 
     15 namespace ppapi {
     16 
     17 ViewData::ViewData() {
     18   // Assume POD.
     19   memset(this, 0, sizeof(ViewData));
     20 
     21   device_scale = 1.0f;
     22   css_scale = 1.0f;
     23 }
     24 
     25 ViewData::~ViewData() {
     26 }
     27 
     28 bool ViewData::Equals(const ViewData& other) const {
     29   return rect.point.x == other.rect.point.x &&
     30          rect.point.y == other.rect.point.y &&
     31          rect.size.width == other.rect.size.width &&
     32          rect.size.height == other.rect.size.height &&
     33          is_fullscreen == other.is_fullscreen &&
     34          is_page_visible == other.is_page_visible &&
     35          clip_rect.point.x == other.clip_rect.point.x &&
     36          clip_rect.point.y == other.clip_rect.point.y &&
     37          clip_rect.size.width == other.clip_rect.size.width &&
     38          clip_rect.size.height == other.clip_rect.size.height &&
     39          device_scale == other.device_scale &&
     40          css_scale == other.css_scale;
     41 }
     42 
     43 PPB_View_Shared::PPB_View_Shared(ResourceObjectType type,
     44                                  PP_Instance instance,
     45                                  const ViewData& data)
     46     : Resource(type, instance),
     47       data_(data) {
     48 }
     49 
     50 PPB_View_Shared::~PPB_View_Shared() {
     51 }
     52 
     53 thunk::PPB_View_API* PPB_View_Shared::AsPPB_View_API() {
     54   return this;
     55 }
     56 
     57 const ViewData& PPB_View_Shared::GetData() const {
     58   return data_;
     59 }
     60 
     61 PP_Bool PPB_View_Shared::GetRect(PP_Rect* viewport) const {
     62   if (!viewport)
     63     return PP_FALSE;
     64   *viewport = data_.rect;
     65   return PP_TRUE;
     66 }
     67 
     68 PP_Bool PPB_View_Shared::IsFullscreen() const {
     69   return PP_FromBool(data_.is_fullscreen);
     70 }
     71 
     72 PP_Bool PPB_View_Shared::IsVisible() const {
     73   return PP_FromBool(data_.is_page_visible && IsRectNonempty(data_.clip_rect));
     74 }
     75 
     76 PP_Bool PPB_View_Shared::IsPageVisible() const {
     77   return PP_FromBool(data_.is_page_visible);
     78 }
     79 
     80 PP_Bool PPB_View_Shared::GetClipRect(PP_Rect* clip) const {
     81   if (!clip)
     82     return PP_FALSE;
     83   *clip = data_.clip_rect;
     84   return PP_TRUE;
     85 }
     86 
     87 float PPB_View_Shared::GetDeviceScale() const {
     88   return data_.device_scale;
     89 }
     90 
     91 float PPB_View_Shared::GetCSSScale() const {
     92   return data_.css_scale;
     93 }
     94 
     95 }  // namespace ppapi
     96