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/* 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_graphics_2d_dev.idl modified Tue Nov 12 11:22:26 2013. */
#ifndef PPAPI_C_DEV_PPB_GRAPHICS_2D_DEV_H_
#define PPAPI_C_DEV_PPB_GRAPHICS_2D_DEV_H_
#include "ppapi/c/pp_bool.h"
#include "ppapi/c/pp_macros.h"
#include "ppapi/c/pp_point.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"
#define PPB_GRAPHICS2D_DEV_INTERFACE_0_1 "PPB_Graphics2D(Dev);0.1"
#define PPB_GRAPHICS2D_DEV_INTERFACE_0_2 "PPB_Graphics2D(Dev);0.2"
#define PPB_GRAPHICS2D_DEV_INTERFACE PPB_GRAPHICS2D_DEV_INTERFACE_0_2
/**
* @file
* This file contains the <code>PPB_Graphics2D_Dev</code> interface. */
/**
* @addtogroup Enums
* @{
*/
/**
* These options affect how the existing graphics context is displayed when a
* plugin is resized.
*/
typedef enum {
/**
* In this mode, the context does not change size or offset. If the backing
* store is the same size as the plugin element, this will result in the
* pixels on the right side of the plugin element being unavailable, revealing
* the contents underneath it.
*/
PP_GRAPHICS2D_DEV_RESIZEMODE_DEFAULT,
/**
* In this mode, the context and its offset are scaled relative to how much
* the plugin element has been resized.
*/
PP_GRAPHICS2D_DEV_RESIZEMODE_STRETCH
} PP_Graphics2D_Dev_ResizeMode;
PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_Graphics2D_Dev_ResizeMode, 4);
/**
* @}
*/
/**
* @addtogroup Interfaces
* @{
*/
/* PPB_Graphics2D_Dev interface */
struct PPB_Graphics2D_Dev_0_2 {
/**
* SetScale() sets the scale factor that will be applied when painting the
* graphics context onto the output device. Typically, if rendering at device
* resolution is desired, the context would be created with the width and
* height scaled up by the view's GetDeviceScale and SetScale called with a
* scale of 1.0 / GetDeviceScale(). For example, if the view resource passed
* to DidChangeView has a rectangle of (w=200, h=100) and a device scale of
* 2.0, one would call Create with a size of (w=400, h=200) and then call
* SetScale with 0.5. One would then treat each pixel in the context as a
* single device pixel.
*
* @param[in] resource A <code>Graphics2D</code> context resource.
* @param[in] scale The scale to apply when painting.
*
* @return Returns <code>PP_TRUE</code> on success or <code>PP_FALSE</code> if
* the resource is invalid or the scale factor is 0 or less.
*/
PP_Bool (*SetScale)(PP_Resource resource, float scale);
/***
* GetScale() gets the scale factor that will be applied when painting the
* graphics context onto the output device.
*
* @param[in] resource A <code>Graphics2D</code> context resource.
*
* @return Returns the scale factor for the graphics context. If the resource
* is not a valid <code>Graphics2D</code> context, this will return 0.0.
*/
float (*GetScale)(PP_Resource resource);
/***
* Sets the offset into the plugin element at which the graphics context is
* painted. This allows a portion of the plugin element to be painted to.
* The new offset will only be applied after Flush() has been called.
*
* @param[in] resource A <code>Graphics2D</code> context resource.
* @param[in] offset The offset at which the context should be painted.
*/
void (*SetOffset)(PP_Resource resource, const struct PP_Point* offset);
/***
* Sets the resize mode for the graphics context. When a plugin element is
* resized in the DOM, it takes time for the plugin to update the graphics
* context in the renderer. These options affect how the existing context is
* displayed until the backing store is updated by the plugin.
*
* @param[in] resource A <code>Graphics2D</code> context resource.
* @param[in] resize_mode The resize mode to change this context to.
*/
void (*SetResizeMode)(PP_Resource resource,
PP_Graphics2D_Dev_ResizeMode resize_mode);
};
typedef struct PPB_Graphics2D_Dev_0_2 PPB_Graphics2D_Dev;
struct PPB_Graphics2D_Dev_0_1 {
PP_Bool (*SetScale)(PP_Resource resource, float scale);
float (*GetScale)(PP_Resource resource);
void (*SetResizeMode)(PP_Resource resource,
PP_Graphics2D_Dev_ResizeMode resize_mode);
};
/**
* @}
*/
#endif /* PPAPI_C_DEV_PPB_GRAPHICS_2D_DEV_H_ */
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