/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* From dev/ppb_view_dev.idl modified Mon Jun 18 14:55:58 2012. */
#ifndef PPAPI_C_DEV_PPB_VIEW_DEV_H_
#define PPAPI_C_DEV_PPB_VIEW_DEV_H_
#include "ppapi/c/pp_macros.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"
#define PPB_VIEW_DEV_INTERFACE_0_1 "PPB_View(Dev);0.1"
#define PPB_VIEW_DEV_INTERFACE PPB_VIEW_DEV_INTERFACE_0_1
/**
* @file
* This file contains the <code>PPB_View_Dev</code> interface. */
/**
* @addtogroup Interfaces
* @{
*/
/* PPB_View_Dev interface */
struct PPB_View_Dev_0_1 {
/**
* GetDeviceScale returns the scale factor between device pixels and DIPs
* (also known as logical pixels or UI pixels on some platforms). This allows
* the developer to render their contents at device resolution, even as
* coordinates / sizes are given in DIPs through the API.
*
* Note that the coordinate system for Pepper APIs is DIPs. Also note that
* one DIP might not equal one CSS pixel - when page scale/zoom is in effect.
*
* @param[in] resource A <code>PP_Resource</code> corresponding to a
* <code>PPB_View</code> resource.
*
* @return A <code>float</code> value representing the number of device pixels
* per DIP. If the resource is invalid, the value will be 0.0.
*/
float (*GetDeviceScale)(PP_Resource resource);
/**
* GetCSSScale returns the scale factor between DIPs and CSS pixels. This
* allows proper scaling between DIPs - as sent via the Pepper API - and CSS
* pixel coordinates used for Web content.
*
* @param[in] resource A <code>PP_Resource</code> corresponding to a
* <code>PPB_View</code> resource.
*
* @return css_scale A <code>float</code> value representing the number of
* DIPs per CSS pixel. If the resource is invalid, the value will be 0.0.
*/
float (*GetCSSScale)(PP_Resource resource);
};
typedef struct PPB_View_Dev_0_1 PPB_View_Dev;
/**
* @}
*/
#endif /* PPAPI_C_DEV_PPB_VIEW_DEV_H_ */