cef/include/capi/cef_image_capi.h

207 lines
8.2 KiB
C

// Copyright (c) 2024 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=7512ccf755017d5b1866b753890b498e8163006d$
//
#ifndef CEF_INCLUDE_CAPI_CEF_IMAGE_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_IMAGE_CAPI_H_
#pragma once
#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_values_capi.h"
#ifdef __cplusplus
extern "C" {
#endif
///
/// Container for a single image represented at different scale factors. All
/// image representations should be the same size in density independent pixel
/// (DIP) units. For example, if the image at scale factor 1.0 is 100x100 pixels
/// then the image at scale factor 2.0 should be 200x200 pixels -- both images
/// will display with a DIP size of 100x100 units. The functions of this
/// structure can be called on any browser process thread.
///
typedef struct _cef_image_t {
///
/// Base structure.
///
cef_base_ref_counted_t base;
///
/// Returns true (1) if this Image is NULL.
///
int(CEF_CALLBACK* is_empty)(struct _cef_image_t* self);
///
/// Returns true (1) if this Image and |that| Image share the same underlying
/// storage. Will also return true (1) if both images are NULL.
///
int(CEF_CALLBACK* is_same)(struct _cef_image_t* self,
struct _cef_image_t* that);
///
/// Add a bitmap image representation for |scale_factor|. Only 32-bit
/// RGBA/BGRA formats are supported. |pixel_width| and |pixel_height| are the
/// bitmap representation size in pixel coordinates. |pixel_data| is the array
/// of pixel data and should be |pixel_width| x |pixel_height| x 4 bytes in
/// size. |color_type| and |alpha_type| values specify the pixel format.
///
int(CEF_CALLBACK* add_bitmap)(struct _cef_image_t* self,
float scale_factor,
int pixel_width,
int pixel_height,
cef_color_type_t color_type,
cef_alpha_type_t alpha_type,
const void* pixel_data,
size_t pixel_data_size);
///
/// Add a PNG image representation for |scale_factor|. |png_data| is the image
/// data of size |png_data_size|. Any alpha transparency in the PNG data will
/// be maintained.
///
int(CEF_CALLBACK* add_png)(struct _cef_image_t* self,
float scale_factor,
const void* png_data,
size_t png_data_size);
///
/// Create a JPEG image representation for |scale_factor|. |jpeg_data| is the
/// image data of size |jpeg_data_size|. The JPEG format does not support
/// transparency so the alpha byte will be set to 0xFF for all pixels.
///
int(CEF_CALLBACK* add_jpeg)(struct _cef_image_t* self,
float scale_factor,
const void* jpeg_data,
size_t jpeg_data_size);
///
/// Returns the image width in density independent pixel (DIP) units.
///
size_t(CEF_CALLBACK* get_width)(struct _cef_image_t* self);
///
/// Returns the image height in density independent pixel (DIP) units.
///
size_t(CEF_CALLBACK* get_height)(struct _cef_image_t* self);
///
/// Returns true (1) if this image contains a representation for
/// |scale_factor|.
///
int(CEF_CALLBACK* has_representation)(struct _cef_image_t* self,
float scale_factor);
///
/// Removes the representation for |scale_factor|. Returns true (1) on
/// success.
///
int(CEF_CALLBACK* remove_representation)(struct _cef_image_t* self,
float scale_factor);
///
/// Returns information for the representation that most closely matches
/// |scale_factor|. |actual_scale_factor| is the actual scale factor for the
/// representation. |pixel_width| and |pixel_height| are the representation
/// size in pixel coordinates. Returns true (1) on success.
///
int(CEF_CALLBACK* get_representation_info)(struct _cef_image_t* self,
float scale_factor,
float* actual_scale_factor,
int* pixel_width,
int* pixel_height);
///
/// Returns the bitmap representation that most closely matches
/// |scale_factor|. Only 32-bit RGBA/BGRA formats are supported. |color_type|
/// and |alpha_type| values specify the desired output pixel format.
/// |pixel_width| and |pixel_height| are the output representation size in
/// pixel coordinates. Returns a cef_binary_value_t containing the pixel data
/// on success or NULL on failure.
///
struct _cef_binary_value_t*(CEF_CALLBACK* get_as_bitmap)(
struct _cef_image_t* self,
float scale_factor,
cef_color_type_t color_type,
cef_alpha_type_t alpha_type,
int* pixel_width,
int* pixel_height);
///
/// Returns the PNG representation that most closely matches |scale_factor|.
/// If |with_transparency| is true (1) any alpha transparency in the image
/// will be represented in the resulting PNG data. |pixel_width| and
/// |pixel_height| are the output representation size in pixel coordinates.
/// Returns a cef_binary_value_t containing the PNG image data on success or
/// NULL on failure.
///
struct _cef_binary_value_t*(CEF_CALLBACK* get_as_png)(
struct _cef_image_t* self,
float scale_factor,
int with_transparency,
int* pixel_width,
int* pixel_height);
///
/// Returns the JPEG representation that most closely matches |scale_factor|.
/// |quality| determines the compression level with 0 == lowest and 100 ==
/// highest. The JPEG format does not support alpha transparency and the alpha
/// channel, if any, will be discarded. |pixel_width| and |pixel_height| are
/// the output representation size in pixel coordinates. Returns a
/// cef_binary_value_t containing the JPEG image data on success or NULL on
/// failure.
///
struct _cef_binary_value_t*(CEF_CALLBACK* get_as_jpeg)(
struct _cef_image_t* self,
float scale_factor,
int quality,
int* pixel_width,
int* pixel_height);
} cef_image_t;
///
/// Create a new cef_image_t. It will initially be NULL. Use the Add*()
/// functions to add representations at different scale factors.
///
CEF_EXPORT cef_image_t* cef_image_create(void);
#ifdef __cplusplus
}
#endif
#endif // CEF_INCLUDE_CAPI_CEF_IMAGE_CAPI_H_