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// Copyright 2014 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef PUBLIC_FPDF_EDIT_H_
#define PUBLIC_FPDF_EDIT_H_
#include <stdint.h>
// NOLINTNEXTLINE(build/include)
#include "fpdfview.h"
#define FPDF_ARGB(a, r, g, b) \
((uint32_t)(((uint32_t)(b)&0xff) | (((uint32_t)(g)&0xff) << 8) | \
(((uint32_t)(r)&0xff) << 16) | (((uint32_t)(a)&0xff) << 24)))
#define FPDF_GetBValue(argb) ((uint8_t)(argb))
#define FPDF_GetGValue(argb) ((uint8_t)(((uint16_t)(argb)) >> 8))
#define FPDF_GetRValue(argb) ((uint8_t)((argb) >> 16))
#define FPDF_GetAValue(argb) ((uint8_t)((argb) >> 24))
// Refer to PDF Reference version 1.7 table 4.12 for all color space families.
#define FPDF_COLORSPACE_UNKNOWN 0
#define FPDF_COLORSPACE_DEVICEGRAY 1
#define FPDF_COLORSPACE_DEVICERGB 2
#define FPDF_COLORSPACE_DEVICECMYK 3
#define FPDF_COLORSPACE_CALGRAY 4
#define FPDF_COLORSPACE_CALRGB 5
#define FPDF_COLORSPACE_LAB 6
#define FPDF_COLORSPACE_ICCBASED 7
#define FPDF_COLORSPACE_SEPARATION 8
#define FPDF_COLORSPACE_DEVICEN 9
#define FPDF_COLORSPACE_INDEXED 10
#define FPDF_COLORSPACE_PATTERN 11
// The page object constants.
#define FPDF_PAGEOBJ_UNKNOWN 0
#define FPDF_PAGEOBJ_TEXT 1
#define FPDF_PAGEOBJ_PATH 2
#define FPDF_PAGEOBJ_IMAGE 3
#define FPDF_PAGEOBJ_SHADING 4
#define FPDF_PAGEOBJ_FORM 5
// The path segment constants.
#define FPDF_SEGMENT_UNKNOWN -1
#define FPDF_SEGMENT_LINETO 0
#define FPDF_SEGMENT_BEZIERTO 1
#define FPDF_SEGMENT_MOVETO 2
#define FPDF_FILLMODE_NONE 0
#define FPDF_FILLMODE_ALTERNATE 1
#define FPDF_FILLMODE_WINDING 2
#define FPDF_FONT_TYPE1 1
#define FPDF_FONT_TRUETYPE 2
#define FPDF_LINECAP_BUTT 0
#define FPDF_LINECAP_ROUND 1
#define FPDF_LINECAP_PROJECTING_SQUARE 2
#define FPDF_LINEJOIN_MITER 0
#define FPDF_LINEJOIN_ROUND 1
#define FPDF_LINEJOIN_BEVEL 2
// See FPDF_SetPrintMode() for descriptions.
#define FPDF_PRINTMODE_EMF 0
#define FPDF_PRINTMODE_TEXTONLY 1
#define FPDF_PRINTMODE_POSTSCRIPT2 2
#define FPDF_PRINTMODE_POSTSCRIPT3 3
#define FPDF_PRINTMODE_POSTSCRIPT2_PASSTHROUGH 4
#define FPDF_PRINTMODE_POSTSCRIPT3_PASSTHROUGH 5
#define FPDF_PRINTMODE_EMF_IMAGE_MASKS 6
#define FPDF_PRINTMODE_POSTSCRIPT3_TYPE42 7
#define FPDF_PRINTMODE_POSTSCRIPT3_TYPE42_PASSTHROUGH 8
typedef struct FPDF_IMAGEOBJ_METADATA {
// The image width in pixels.
unsigned int width;
// The image height in pixels.
unsigned int height;
// The image's horizontal pixel-per-inch.
float horizontal_dpi;
// The image's vertical pixel-per-inch.
float vertical_dpi;
// The number of bits used to represent each pixel.
unsigned int bits_per_pixel;
// The image's colorspace. See above for the list of FPDF_COLORSPACE_*.
int colorspace;
// The image's marked content ID. Useful for pairing with associated alt-text.
// A value of -1 indicates no ID.
int marked_content_id;
} FPDF_IMAGEOBJ_METADATA;
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
// Create a new PDF document.
//
// Returns a handle to a new document, or NULL on failure.
FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV FPDF_CreateNewDocument();
// Create a new PDF page.
//
// document - handle to document.
// page_index - suggested 0-based index of the page to create. If it is larger
// than document's current last index(L), the created page index
// is the next available index -- L+1.
// width - the page width in points.
// height - the page height in points.
//
// Returns the handle to the new page or NULL on failure.
//
// The page should be closed with FPDF_ClosePage() when finished as
// with any other page in the document.
FPDF_EXPORT FPDF_PAGE FPDF_CALLCONV FPDFPage_New(FPDF_DOCUMENT document,
int page_index,
double width,
double height);
// Delete the page at |page_index|.
//
// document - handle to document.
// page_index - the index of the page to delete.
FPDF_EXPORT void FPDF_CALLCONV FPDFPage_Delete(FPDF_DOCUMENT document,
int page_index);
// Experimental API.
// Move the given pages to a new index position.
//
// page_indices - the ordered list of pages to move. No duplicates allowed.
// page_indices_len - the number of elements in |page_indices|
// dest_page_index - the new index position to which the pages in
// |page_indices| are moved.
//
// Returns TRUE on success. If it returns FALSE, the document may be left in an
// indeterminate state.
//
// Example: The PDF document starts out with pages [A, B, C, D], with indices
// [0, 1, 2, 3].
//
// > Move(doc, [3, 2], 2, 1); // returns true
// > // The document has pages [A, D, C, B].
// >
// > Move(doc, [0, 4, 3], 3, 1); // returns false
// > // Returned false because index 4 is out of range.
// >
// > Move(doc, [0, 3, 1], 3, 2); // returns false
// > // Returned false because index 2 is out of range for 3 page indices.
// >
// > Move(doc, [2, 2], 2, 0); // returns false
// > // Returned false because [2, 2] contains duplicates.
//
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDF_MovePages(FPDF_DOCUMENT document,
const int* page_indices,
unsigned long page_indices_len,
int dest_page_index);
// Get the rotation of |page|.
//
// page - handle to a page
//
// Returns one of the following indicating the page rotation:
// 0 - No rotation.
// 1 - Rotated 90 degrees clockwise.
// 2 - Rotated 180 degrees clockwise.
// 3 - Rotated 270 degrees clockwise.
FPDF_EXPORT int FPDF_CALLCONV FPDFPage_GetRotation(FPDF_PAGE page);
// Set rotation for |page|.
//
// page - handle to a page.
// rotate - the rotation value, one of:
// 0 - No rotation.
// 1 - Rotated 90 degrees clockwise.
// 2 - Rotated 180 degrees clockwise.
// 3 - Rotated 270 degrees clockwise.
FPDF_EXPORT void FPDF_CALLCONV FPDFPage_SetRotation(FPDF_PAGE page, int rotate);
// Insert |page_object| into |page|.
//
// page - handle to a page
// page_object - handle to a page object. The |page_object| will be
// automatically freed.
FPDF_EXPORT void FPDF_CALLCONV
FPDFPage_InsertObject(FPDF_PAGE page, FPDF_PAGEOBJECT page_object);
// Experimental API.
// Remove |page_object| from |page|.
//
// page - handle to a page
// page_object - handle to a page object to be removed.
//
// Returns TRUE on success.
//
// Ownership is transferred to the caller. Call FPDFPageObj_Destroy() to free
// it.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPage_RemoveObject(FPDF_PAGE page, FPDF_PAGEOBJECT page_object);
// Get number of page objects inside |page|.
//
// page - handle to a page.
//
// Returns the number of objects in |page|.
FPDF_EXPORT int FPDF_CALLCONV FPDFPage_CountObjects(FPDF_PAGE page);
// Get object in |page| at |index|.
//
// page - handle to a page.
// index - the index of a page object.
//
// Returns the handle to the page object, or NULL on failed.
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPage_GetObject(FPDF_PAGE page,
int index);
// Checks if |page| contains transparency.
//
// page - handle to a page.
//
// Returns TRUE if |page| contains transparency.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_HasTransparency(FPDF_PAGE page);
// Generate the content of |page|.
//
// page - handle to a page.
//
// Returns TRUE on success.
//
// Before you save the page to a file, or reload the page, you must call
// |FPDFPage_GenerateContent| or any changes to |page| will be lost.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPage_GenerateContent(FPDF_PAGE page);
// Destroy |page_object| by releasing its resources. |page_object| must have
// been created by FPDFPageObj_CreateNew{Path|Rect}() or
// FPDFPageObj_New{Text|Image}Obj(). This function must be called on
// newly-created objects if they are not added to a page through
// FPDFPage_InsertObject() or to an annotation through FPDFAnnot_AppendObject().
//
// page_object - handle to a page object.
FPDF_EXPORT void FPDF_CALLCONV FPDFPageObj_Destroy(FPDF_PAGEOBJECT page_object);
// Checks if |page_object| contains transparency.
//
// page_object - handle to a page object.
//
// Returns TRUE if |page_object| contains transparency.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_HasTransparency(FPDF_PAGEOBJECT page_object);
// Get type of |page_object|.
//
// page_object - handle to a page object.
//
// Returns one of the FPDF_PAGEOBJ_* values on success, FPDF_PAGEOBJ_UNKNOWN on
// error.
FPDF_EXPORT int FPDF_CALLCONV FPDFPageObj_GetType(FPDF_PAGEOBJECT page_object);
// Transform |page_object| by the given matrix.
//
// page_object - handle to a page object.
// a - matrix value.
// b - matrix value.
// c - matrix value.
// d - matrix value.
// e - matrix value.
// f - matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and can be used to scale, rotate, shear and translate the |page_object|.
FPDF_EXPORT void FPDF_CALLCONV
FPDFPageObj_Transform(FPDF_PAGEOBJECT page_object,
double a,
double b,
double c,
double d,
double e,
double f);
// Experimental API.
// Get the transform matrix of a page object.
//
// page_object - handle to a page object.
// matrix - pointer to struct to receive the matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and used to scale, rotate, shear and translate the page object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetMatrix(FPDF_PAGEOBJECT page_object, FS_MATRIX* matrix);
// Experimental API.
// Set the transform matrix of a page object.
//
// page_object - handle to a page object.
// matrix - pointer to struct with the matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and can be used to scale, rotate, shear and translate the page object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetMatrix(FPDF_PAGEOBJECT page_object, const FS_MATRIX* matrix);
// Transform all annotations in |page|.
//
// page - handle to a page.
// a - matrix value.
// b - matrix value.
// c - matrix value.
// d - matrix value.
// e - matrix value.
// f - matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and can be used to scale, rotate, shear and translate the |page| annotations.
FPDF_EXPORT void FPDF_CALLCONV FPDFPage_TransformAnnots(FPDF_PAGE page,
double a,
double b,
double c,
double d,
double e,
double f);
// Create a new image object.
//
// document - handle to a document.
//
// Returns a handle to a new image object.
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFPageObj_NewImageObj(FPDF_DOCUMENT document);
// Experimental API.
// Get number of content marks in |page_object|.
//
// page_object - handle to a page object.
//
// Returns the number of content marks in |page_object|, or -1 in case of
// failure.
FPDF_EXPORT int FPDF_CALLCONV
FPDFPageObj_CountMarks(FPDF_PAGEOBJECT page_object);
// Experimental API.
// Get content mark in |page_object| at |index|.
//
// page_object - handle to a page object.
// index - the index of a page object.
//
// Returns the handle to the content mark, or NULL on failure. The handle is
// still owned by the library, and it should not be freed directly. It becomes
// invalid if the page object is destroyed, either directly or indirectly by
// unloading the page.
FPDF_EXPORT FPDF_PAGEOBJECTMARK FPDF_CALLCONV
FPDFPageObj_GetMark(FPDF_PAGEOBJECT page_object, unsigned long index);
// Experimental API.
// Add a new content mark to a |page_object|.
//
// page_object - handle to a page object.
// name - the name (tag) of the mark.
//
// Returns the handle to the content mark, or NULL on failure. The handle is
// still owned by the library, and it should not be freed directly. It becomes
// invalid if the page object is destroyed, either directly or indirectly by
// unloading the page.
FPDF_EXPORT FPDF_PAGEOBJECTMARK FPDF_CALLCONV
FPDFPageObj_AddMark(FPDF_PAGEOBJECT page_object, FPDF_BYTESTRING name);
// Experimental API.
// Removes a content |mark| from a |page_object|.
// The mark handle will be invalid after the removal.
//
// page_object - handle to a page object.
// mark - handle to a content mark in that object to remove.
//
// Returns TRUE if the operation succeeded, FALSE if it failed.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_RemoveMark(FPDF_PAGEOBJECT page_object, FPDF_PAGEOBJECTMARK mark);
// Experimental API.
// Get the name of a content mark.
//
// mark - handle to a content mark.
// buffer - buffer for holding the returned name in UTF-16LE. This is only
// modified if |buflen| is longer than the length of the name.
// Optional, pass null to just retrieve the size of the buffer
// needed.
// buflen - length of the buffer.
// out_buflen - pointer to variable that will receive the minimum buffer size
// to contain the name. Not filled if FALSE is returned.
//
// Returns TRUE if the operation succeeded, FALSE if it failed.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_GetName(FPDF_PAGEOBJECTMARK mark,
void* buffer,
unsigned long buflen,
unsigned long* out_buflen);
// Experimental API.
// Get the number of key/value pair parameters in |mark|.
//
// mark - handle to a content mark.
//
// Returns the number of key/value pair parameters |mark|, or -1 in case of
// failure.
FPDF_EXPORT int FPDF_CALLCONV
FPDFPageObjMark_CountParams(FPDF_PAGEOBJECTMARK mark);
// Experimental API.
// Get the key of a property in a content mark.
//
// mark - handle to a content mark.
// index - index of the property.
// buffer - buffer for holding the returned key in UTF-16LE. This is only
// modified if |buflen| is longer than the length of the key.
// Optional, pass null to just retrieve the size of the buffer
// needed.
// buflen - length of the buffer.
// out_buflen - pointer to variable that will receive the minimum buffer size
// to contain the key. Not filled if FALSE is returned.
//
// Returns TRUE if the operation was successful, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_GetParamKey(FPDF_PAGEOBJECTMARK mark,
unsigned long index,
void* buffer,
unsigned long buflen,
unsigned long* out_buflen);
// Experimental API.
// Get the type of the value of a property in a content mark by key.
//
// mark - handle to a content mark.
// key - string key of the property.
//
// Returns the type of the value, or FPDF_OBJECT_UNKNOWN in case of failure.
FPDF_EXPORT FPDF_OBJECT_TYPE FPDF_CALLCONV
FPDFPageObjMark_GetParamValueType(FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key);
// Experimental API.
// Get the value of a number property in a content mark by key as int.
// FPDFPageObjMark_GetParamValueType() should have returned FPDF_OBJECT_NUMBER
// for this property.
//
// mark - handle to a content mark.
// key - string key of the property.
// out_value - pointer to variable that will receive the value. Not filled if
// false is returned.
//
// Returns TRUE if the key maps to a number value, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_GetParamIntValue(FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
int* out_value);
// Experimental API.
// Get the value of a string property in a content mark by key.
//
// mark - handle to a content mark.
// key - string key of the property.
// buffer - buffer for holding the returned value in UTF-16LE. This is
// only modified if |buflen| is longer than the length of the
// value.
// Optional, pass null to just retrieve the size of the buffer
// needed.
// buflen - length of the buffer.
// out_buflen - pointer to variable that will receive the minimum buffer size
// to contain the value. Not filled if FALSE is returned.
//
// Returns TRUE if the key maps to a string/blob value, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_GetParamStringValue(FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
void* buffer,
unsigned long buflen,
unsigned long* out_buflen);
// Experimental API.
// Get the value of a blob property in a content mark by key.
//
// mark - handle to a content mark.
// key - string key of the property.
// buffer - buffer for holding the returned value. This is only modified
// if |buflen| is at least as long as the length of the value.
// Optional, pass null to just retrieve the size of the buffer
// needed.
// buflen - length of the buffer.
// out_buflen - pointer to variable that will receive the minimum buffer size
// to contain the value. Not filled if FALSE is returned.
//
// Returns TRUE if the key maps to a string/blob value, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_GetParamBlobValue(FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
void* buffer,
unsigned long buflen,
unsigned long* out_buflen);
// Experimental API.
// Set the value of an int property in a content mark by key. If a parameter
// with key |key| exists, its value is set to |value|. Otherwise, it is added as
// a new parameter.
//
// document - handle to the document.
// page_object - handle to the page object with the mark.
// mark - handle to a content mark.
// key - string key of the property.
// value - int value to set.
//
// Returns TRUE if the operation succeeded, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_SetIntParam(FPDF_DOCUMENT document,
FPDF_PAGEOBJECT page_object,
FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
int value);
// Experimental API.
// Set the value of a string property in a content mark by key. If a parameter
// with key |key| exists, its value is set to |value|. Otherwise, it is added as
// a new parameter.
//
// document - handle to the document.
// page_object - handle to the page object with the mark.
// mark - handle to a content mark.
// key - string key of the property.
// value - string value to set.
//
// Returns TRUE if the operation succeeded, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_SetStringParam(FPDF_DOCUMENT document,
FPDF_PAGEOBJECT page_object,
FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
FPDF_BYTESTRING value);
// Experimental API.
// Set the value of a blob property in a content mark by key. If a parameter
// with key |key| exists, its value is set to |value|. Otherwise, it is added as
// a new parameter.
//
// document - handle to the document.
// page_object - handle to the page object with the mark.
// mark - handle to a content mark.
// key - string key of the property.
// value - pointer to blob value to set.
// value_len - size in bytes of |value|.
//
// Returns TRUE if the operation succeeded, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_SetBlobParam(FPDF_DOCUMENT document,
FPDF_PAGEOBJECT page_object,
FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key,
void* value,
unsigned long value_len);
// Experimental API.
// Removes a property from a content mark by key.
//
// page_object - handle to the page object with the mark.
// mark - handle to a content mark.
// key - string key of the property.
//
// Returns TRUE if the operation succeeded, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObjMark_RemoveParam(FPDF_PAGEOBJECT page_object,
FPDF_PAGEOBJECTMARK mark,
FPDF_BYTESTRING key);
// Load an image from a JPEG image file and then set it into |image_object|.
//
// pages - pointer to the start of all loaded pages, may be NULL.
// count - number of |pages|, may be 0.
// image_object - handle to an image object.
// file_access - file access handler which specifies the JPEG image file.
//
// Returns TRUE on success.
//
// The image object might already have an associated image, which is shared and
// cached by the loaded pages. In that case, we need to clear the cached image
// for all the loaded pages. Pass |pages| and page count (|count|) to this API
// to clear the image cache. If the image is not previously shared, or NULL is a
// valid |pages| value.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_LoadJpegFile(FPDF_PAGE* pages,
int count,
FPDF_PAGEOBJECT image_object,
FPDF_FILEACCESS* file_access);
// Load an image from a JPEG image file and then set it into |image_object|.
//
// pages - pointer to the start of all loaded pages, may be NULL.
// count - number of |pages|, may be 0.
// image_object - handle to an image object.
// file_access - file access handler which specifies the JPEG image file.
//
// Returns TRUE on success.
//
// The image object might already have an associated image, which is shared and
// cached by the loaded pages. In that case, we need to clear the cached image
// for all the loaded pages. Pass |pages| and page count (|count|) to this API
// to clear the image cache. If the image is not previously shared, or NULL is a
// valid |pages| value. This function loads the JPEG image inline, so the image
// content is copied to the file. This allows |file_access| and its associated
// data to be deleted after this function returns.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_LoadJpegFileInline(FPDF_PAGE* pages,
int count,
FPDF_PAGEOBJECT image_object,
FPDF_FILEACCESS* file_access);
// TODO(thestig): Start deprecating this once FPDFPageObj_SetMatrix() is stable.
//
// Set the transform matrix of |image_object|.
//
// image_object - handle to an image object.
// a - matrix value.
// b - matrix value.
// c - matrix value.
// d - matrix value.
// e - matrix value.
// f - matrix value.
//
// The matrix is composed as:
// |a c e|
// |b d f|
// and can be used to scale, rotate, shear and translate the |image_object|.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_SetMatrix(FPDF_PAGEOBJECT image_object,
double a,
double b,
double c,
double d,
double e,
double f);
// Set |bitmap| to |image_object|.
//
// pages - pointer to the start of all loaded pages, may be NULL.
// count - number of |pages|, may be 0.
// image_object - handle to an image object.
// bitmap - handle of the bitmap.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_SetBitmap(FPDF_PAGE* pages,
int count,
FPDF_PAGEOBJECT image_object,
FPDF_BITMAP bitmap);
// Get a bitmap rasterization of |image_object|. FPDFImageObj_GetBitmap() only
// operates on |image_object| and does not take the associated image mask into
// account. It also ignores the matrix for |image_object|.
// The returned bitmap will be owned by the caller, and FPDFBitmap_Destroy()
// must be called on the returned bitmap when it is no longer needed.
//
// image_object - handle to an image object.
//
// Returns the bitmap.
FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV
FPDFImageObj_GetBitmap(FPDF_PAGEOBJECT image_object);
// Experimental API.
// Get a bitmap rasterization of |image_object| that takes the image mask and
// image matrix into account. To render correctly, the caller must provide the
// |document| associated with |image_object|. If there is a |page| associated
// with |image_object|, the caller should provide that as well.
// The returned bitmap will be owned by the caller, and FPDFBitmap_Destroy()
// must be called on the returned bitmap when it is no longer needed.
//
// document - handle to a document associated with |image_object|.
// page - handle to an optional page associated with |image_object|.
// image_object - handle to an image object.
//
// Returns the bitmap or NULL on failure.
FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV
FPDFImageObj_GetRenderedBitmap(FPDF_DOCUMENT document,
FPDF_PAGE page,
FPDF_PAGEOBJECT image_object);
// Get the decoded image data of |image_object|. The decoded data is the
// uncompressed image data, i.e. the raw image data after having all filters
// applied. |buffer| is only modified if |buflen| is longer than the length of
// the decoded image data.
//
// image_object - handle to an image object.
// buffer - buffer for holding the decoded image data.
// buflen - length of the buffer in bytes.
//
// Returns the length of the decoded image data.
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFImageObj_GetImageDataDecoded(FPDF_PAGEOBJECT image_object,
void* buffer,
unsigned long buflen);
// Get the raw image data of |image_object|. The raw data is the image data as
// stored in the PDF without applying any filters. |buffer| is only modified if
// |buflen| is longer than the length of the raw image data.
//
// image_object - handle to an image object.
// buffer - buffer for holding the raw image data.
// buflen - length of the buffer in bytes.
//
// Returns the length of the raw image data.
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFImageObj_GetImageDataRaw(FPDF_PAGEOBJECT image_object,
void* buffer,
unsigned long buflen);
// Get the number of filters (i.e. decoders) of the image in |image_object|.
//
// image_object - handle to an image object.
//
// Returns the number of |image_object|'s filters.
FPDF_EXPORT int FPDF_CALLCONV
FPDFImageObj_GetImageFilterCount(FPDF_PAGEOBJECT image_object);
// Get the filter at |index| of |image_object|'s list of filters. Note that the
// filters need to be applied in order, i.e. the first filter should be applied
// first, then the second, etc. |buffer| is only modified if |buflen| is longer
// than the length of the filter string.
//
// image_object - handle to an image object.
// index - the index of the filter requested.
// buffer - buffer for holding filter string, encoded in UTF-8.
// buflen - length of the buffer.
//
// Returns the length of the filter string.
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFImageObj_GetImageFilter(FPDF_PAGEOBJECT image_object,
int index,
void* buffer,
unsigned long buflen);
// Get the image metadata of |image_object|, including dimension, DPI, bits per
// pixel, and colorspace. If the |image_object| is not an image object or if it
// does not have an image, then the return value will be false. Otherwise,
// failure to retrieve any specific parameter would result in its value being 0.
//
// image_object - handle to an image object.
// page - handle to the page that |image_object| is on. Required for
// retrieving the image's bits per pixel and colorspace.
// metadata - receives the image metadata; must not be NULL.
//
// Returns true if successful.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_GetImageMetadata(FPDF_PAGEOBJECT image_object,
FPDF_PAGE page,
FPDF_IMAGEOBJ_METADATA* metadata);
// Experimental API.
// Get the image size in pixels. Faster method to get only image size.
//
// image_object - handle to an image object.
// width - receives the image width in pixels; must not be NULL.
// height - receives the image height in pixels; must not be NULL.
//
// Returns true if successful.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFImageObj_GetImagePixelSize(FPDF_PAGEOBJECT image_object,
unsigned int* width,
unsigned int* height);
// Create a new path object at an initial position.
//
// x - initial horizontal position.
// y - initial vertical position.
//
// Returns a handle to a new path object.
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewPath(float x,
float y);
// Create a closed path consisting of a rectangle.
//
// x - horizontal position for the left boundary of the rectangle.
// y - vertical position for the bottom boundary of the rectangle.
// w - width of the rectangle.
// h - height of the rectangle.
//
// Returns a handle to the new path object.
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewRect(float x,
float y,
float w,
float h);
// Get the bounding box of |page_object|.
//
// page_object - handle to a page object.
// left - pointer where the left coordinate will be stored
// bottom - pointer where the bottom coordinate will be stored
// right - pointer where the right coordinate will be stored
// top - pointer where the top coordinate will be stored
//
// On success, returns TRUE and fills in the 4 coordinates.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetBounds(FPDF_PAGEOBJECT page_object,
float* left,
float* bottom,
float* right,
float* top);
// Experimental API.
// Get the quad points that bounds |page_object|.
//
// page_object - handle to a page object.
// quad_points - pointer where the quadrilateral points will be stored.
//
// On success, returns TRUE and fills in |quad_points|.
//
// Similar to FPDFPageObj_GetBounds(), this returns the bounds of a page
// object. When the object is rotated by a non-multiple of 90 degrees, this API
// returns a tighter bound that cannot be represented with just the 4 sides of
// a rectangle.
//
// Currently only works the following |page_object| types: FPDF_PAGEOBJ_TEXT and
// FPDF_PAGEOBJ_IMAGE.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetRotatedBounds(FPDF_PAGEOBJECT page_object,
FS_QUADPOINTSF* quad_points);
// Set the blend mode of |page_object|.
//
// page_object - handle to a page object.
// blend_mode - string containing the blend mode.
//
// Blend mode can be one of following: Color, ColorBurn, ColorDodge, Darken,
// Difference, Exclusion, HardLight, Hue, Lighten, Luminosity, Multiply, Normal,
// Overlay, Saturation, Screen, SoftLight
FPDF_EXPORT void FPDF_CALLCONV
FPDFPageObj_SetBlendMode(FPDF_PAGEOBJECT page_object,
FPDF_BYTESTRING blend_mode);
// Set the stroke RGBA of a page object. Range of values: 0 - 255.
//
// page_object - the handle to the page object.
// R - the red component for the object's stroke color.
// G - the green component for the object's stroke color.
// B - the blue component for the object's stroke color.
// A - the stroke alpha for the object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetStrokeColor(FPDF_PAGEOBJECT page_object,
unsigned int R,
unsigned int G,
unsigned int B,
unsigned int A);
// Get the stroke RGBA of a page object. Range of values: 0 - 255.
//
// page_object - the handle to the page object.
// R - the red component of the path stroke color.
// G - the green component of the object's stroke color.
// B - the blue component of the object's stroke color.
// A - the stroke alpha of the object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetStrokeColor(FPDF_PAGEOBJECT page_object,
unsigned int* R,
unsigned int* G,
unsigned int* B,
unsigned int* A);
// Set the stroke width of a page object.
//
// path - the handle to the page object.
// width - the width of the stroke.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetStrokeWidth(FPDF_PAGEOBJECT page_object, float width);
// Get the stroke width of a page object.
//
// path - the handle to the page object.
// width - the width of the stroke.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetStrokeWidth(FPDF_PAGEOBJECT page_object, float* width);
// Get the line join of |page_object|.
//
// page_object - handle to a page object.
//
// Returns the line join, or -1 on failure.
// Line join can be one of following: FPDF_LINEJOIN_MITER, FPDF_LINEJOIN_ROUND,
// FPDF_LINEJOIN_BEVEL
FPDF_EXPORT int FPDF_CALLCONV
FPDFPageObj_GetLineJoin(FPDF_PAGEOBJECT page_object);
// Set the line join of |page_object|.
//
// page_object - handle to a page object.
// line_join - line join
//
// Line join can be one of following: FPDF_LINEJOIN_MITER, FPDF_LINEJOIN_ROUND,
// FPDF_LINEJOIN_BEVEL
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetLineJoin(FPDF_PAGEOBJECT page_object, int line_join);
// Get the line cap of |page_object|.
//
// page_object - handle to a page object.
//
// Returns the line cap, or -1 on failure.
// Line cap can be one of following: FPDF_LINECAP_BUTT, FPDF_LINECAP_ROUND,
// FPDF_LINECAP_PROJECTING_SQUARE
FPDF_EXPORT int FPDF_CALLCONV
FPDFPageObj_GetLineCap(FPDF_PAGEOBJECT page_object);
// Set the line cap of |page_object|.
//
// page_object - handle to a page object.
// line_cap - line cap
//
// Line cap can be one of following: FPDF_LINECAP_BUTT, FPDF_LINECAP_ROUND,
// FPDF_LINECAP_PROJECTING_SQUARE
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetLineCap(FPDF_PAGEOBJECT page_object, int line_cap);
// Set the fill RGBA of a page object. Range of values: 0 - 255.
//
// page_object - the handle to the page object.
// R - the red component for the object's fill color.
// G - the green component for the object's fill color.
// B - the blue component for the object's fill color.
// A - the fill alpha for the object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetFillColor(FPDF_PAGEOBJECT page_object,
unsigned int R,
unsigned int G,
unsigned int B,
unsigned int A);
// Get the fill RGBA of a page object. Range of values: 0 - 255.
//
// page_object - the handle to the page object.
// R - the red component of the object's fill color.
// G - the green component of the object's fill color.
// B - the blue component of the object's fill color.
// A - the fill alpha of the object.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetFillColor(FPDF_PAGEOBJECT page_object,
unsigned int* R,
unsigned int* G,
unsigned int* B,
unsigned int* A);
// Experimental API.
// Get the line dash |phase| of |page_object|.
//
// page_object - handle to a page object.
// phase - pointer where the dashing phase will be stored.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetDashPhase(FPDF_PAGEOBJECT page_object, float* phase);
// Experimental API.
// Set the line dash phase of |page_object|.
//
// page_object - handle to a page object.
// phase - line dash phase.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetDashPhase(FPDF_PAGEOBJECT page_object, float phase);
// Experimental API.
// Get the line dash array of |page_object|.
//
// page_object - handle to a page object.
//
// Returns the line dash array size or -1 on failure.
FPDF_EXPORT int FPDF_CALLCONV
FPDFPageObj_GetDashCount(FPDF_PAGEOBJECT page_object);
// Experimental API.
// Get the line dash array of |page_object|.
//
// page_object - handle to a page object.
// dash_array - pointer where the dashing array will be stored.
// dash_count - number of elements in |dash_array|.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_GetDashArray(FPDF_PAGEOBJECT page_object,
float* dash_array,
size_t dash_count);
// Experimental API.
// Set the line dash array of |page_object|.
//
// page_object - handle to a page object.
// dash_array - the dash array.
// dash_count - number of elements in |dash_array|.
// phase - the line dash phase.
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPageObj_SetDashArray(FPDF_PAGEOBJECT page_object,
const float* dash_array,
size_t dash_count,
float phase);
// Get number of segments inside |path|.
//
// path - handle to a path.
//
// A segment is a command, created by e.g. FPDFPath_MoveTo(),
// FPDFPath_LineTo() or FPDFPath_BezierTo().
//
// Returns the number of objects in |path| or -1 on failure.
FPDF_EXPORT int FPDF_CALLCONV FPDFPath_CountSegments(FPDF_PAGEOBJECT path);
// Get segment in |path| at |index|.
//
// path - handle to a path.
// index - the index of a segment.
//
// Returns the handle to the segment, or NULL on faiure.
FPDF_EXPORT FPDF_PATHSEGMENT FPDF_CALLCONV
FPDFPath_GetPathSegment(FPDF_PAGEOBJECT path, int index);
// Get coordinates of |segment|.
//
// segment - handle to a segment.
// x - the horizontal position of the segment.
// y - the vertical position of the segment.
//
// Returns TRUE on success, otherwise |x| and |y| is not set.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPathSegment_GetPoint(FPDF_PATHSEGMENT segment, float* x, float* y);
// Get type of |segment|.
//
// segment - handle to a segment.
//
// Returns one of the FPDF_SEGMENT_* values on success,
// FPDF_SEGMENT_UNKNOWN on error.
FPDF_EXPORT int FPDF_CALLCONV FPDFPathSegment_GetType(FPDF_PATHSEGMENT segment);
// Gets if the |segment| closes the current subpath of a given path.
//
// segment - handle to a segment.
//
// Returns close flag for non-NULL segment, FALSE otherwise.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPathSegment_GetClose(FPDF_PATHSEGMENT segment);
// Move a path's current point.
//
// path - the handle to the path object.
// x - the horizontal position of the new current point.
// y - the vertical position of the new current point.
//
// Note that no line will be created between the previous current point and the
// new one.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_MoveTo(FPDF_PAGEOBJECT path,
float x,
float y);
// Add a line between the current point and a new point in the path.
//
// path - the handle to the path object.
// x - the horizontal position of the new point.
// y - the vertical position of the new point.
//
// The path's current point is changed to (x, y).
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_LineTo(FPDF_PAGEOBJECT path,
float x,
float y);
// Add a cubic Bezier curve to the given path, starting at the current point.
//
// path - the handle to the path object.
// x1 - the horizontal position of the first Bezier control point.
// y1 - the vertical position of the first Bezier control point.
// x2 - the horizontal position of the second Bezier control point.
// y2 - the vertical position of the second Bezier control point.
// x3 - the horizontal position of the ending point of the Bezier curve.
// y3 - the vertical position of the ending point of the Bezier curve.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_BezierTo(FPDF_PAGEOBJECT path,
float x1,
float y1,
float x2,
float y2,
float x3,
float y3);
// Close the current subpath of a given path.
//
// path - the handle to the path object.
//
// This will add a line between the current point and the initial point of the
// subpath, thus terminating the current subpath.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_Close(FPDF_PAGEOBJECT path);
// Set the drawing mode of a path.
//
// path - the handle to the path object.
// fillmode - the filling mode to be set: one of the FPDF_FILLMODE_* flags.
// stroke - a boolean specifying if the path should be stroked or not.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_SetDrawMode(FPDF_PAGEOBJECT path,
int fillmode,
FPDF_BOOL stroke);
// Get the drawing mode of a path.
//
// path - the handle to the path object.
// fillmode - the filling mode of the path: one of the FPDF_FILLMODE_* flags.
// stroke - a boolean specifying if the path is stroked or not.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_GetDrawMode(FPDF_PAGEOBJECT path,
int* fillmode,
FPDF_BOOL* stroke);
// Create a new text object using one of the standard PDF fonts.
//
// document - handle to the document.
// font - string containing the font name, without spaces.
// font_size - the font size for the new text object.
//
// Returns a handle to a new text object, or NULL on failure
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFPageObj_NewTextObj(FPDF_DOCUMENT document,
FPDF_BYTESTRING font,
float font_size);
// Set the text for a text object. If it had text, it will be replaced.
//
// text_object - handle to the text object.
// text - the UTF-16LE encoded string containing the text to be added.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFText_SetText(FPDF_PAGEOBJECT text_object, FPDF_WIDESTRING text);
// Experimental API.
// Set the text using charcodes for a text object. If it had text, it will be
// replaced.
//
// text_object - handle to the text object.
// charcodes - pointer to an array of charcodes to be added.
// count - number of elements in |charcodes|.
//
// Returns TRUE on success
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFText_SetCharcodes(FPDF_PAGEOBJECT text_object,
const uint32_t* charcodes,
size_t count);
// Returns a font object loaded from a stream of data. The font is loaded
// into the document. Various font data structures, such as the ToUnicode data,
// are auto-generated based on the inputs.
//
// document - handle to the document.
// data - the stream of font data, which will be copied by the font object.
// size - the size of the font data, in bytes.
// font_type - FPDF_FONT_TYPE1 or FPDF_FONT_TRUETYPE depending on the font type.
// cid - a boolean specifying if the font is a CID font or not.
//
// The loaded font can be closed using FPDFFont_Close().
//
// Returns NULL on failure
FPDF_EXPORT FPDF_FONT FPDF_CALLCONV FPDFText_LoadFont(FPDF_DOCUMENT document,
const uint8_t* data,
uint32_t size,
int font_type,
FPDF_BOOL cid);
// Experimental API.
// Loads one of the standard 14 fonts per PDF spec 1.7 page 416. The preferred
// way of using font style is using a dash to separate the name from the style,
// for example 'Helvetica-BoldItalic'.
//
// document - handle to the document.
// font - string containing the font name, without spaces.
//
// The loaded font can be closed using FPDFFont_Close().
//
// Returns NULL on failure.
FPDF_EXPORT FPDF_FONT FPDF_CALLCONV
FPDFText_LoadStandardFont(FPDF_DOCUMENT document, FPDF_BYTESTRING font);
// Experimental API.
// Returns a font object loaded from a stream of data for a type 2 CID font. The
// font is loaded into the document. Unlike FPDFText_LoadFont(), the ToUnicode
// data and the CIDToGIDMap data are caller provided, instead of auto-generated.
//
// document - handle to the document.
// font_data - the stream of font data, which will be copied by
// the font object.
// font_data_size - the size of the font data, in bytes.
// to_unicode_cmap - the ToUnicode data.
// cid_to_gid_map_data - the stream of CIDToGIDMap data.
// cid_to_gid_map_data_size - the size of the CIDToGIDMap data, in bytes.
//
// The loaded font can be closed using FPDFFont_Close().
//
// Returns NULL on failure.
FPDF_EXPORT FPDF_FONT FPDF_CALLCONV
FPDFText_LoadCidType2Font(FPDF_DOCUMENT document,
const uint8_t* font_data,
uint32_t font_data_size,
FPDF_BYTESTRING to_unicode_cmap,
const uint8_t* cid_to_gid_map_data,
uint32_t cid_to_gid_map_data_size);
// Get the font size of a text object.
//
// text - handle to a text.
// size - pointer to the font size of the text object, measured in points
// (about 1/72 inch)
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFTextObj_GetFontSize(FPDF_PAGEOBJECT text, float* size);
// Close a loaded PDF font.
//
// font - Handle to the loaded font.
FPDF_EXPORT void FPDF_CALLCONV FPDFFont_Close(FPDF_FONT font);
// Create a new text object using a loaded font.
//
// document - handle to the document.
// font - handle to the font object.
// font_size - the font size for the new text object.
//
// Returns a handle to a new text object, or NULL on failure
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFPageObj_CreateTextObj(FPDF_DOCUMENT document,
FPDF_FONT font,
float font_size);
// Get the text rendering mode of a text object.
//
// text - the handle to the text object.
//
// Returns one of the known FPDF_TEXT_RENDERMODE enum values on success,
// FPDF_TEXTRENDERMODE_UNKNOWN on error.
FPDF_EXPORT FPDF_TEXT_RENDERMODE FPDF_CALLCONV
FPDFTextObj_GetTextRenderMode(FPDF_PAGEOBJECT text);
// Experimental API.
// Set the text rendering mode of a text object.
//
// text - the handle to the text object.
// render_mode - the FPDF_TEXT_RENDERMODE enum value to be set (cannot set to
// FPDF_TEXTRENDERMODE_UNKNOWN).
//
// Returns TRUE on success.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFTextObj_SetTextRenderMode(FPDF_PAGEOBJECT text,
FPDF_TEXT_RENDERMODE render_mode);
// Get the text of a text object.
//
// text_object - the handle to the text object.
// text_page - the handle to the text page.
// buffer - the address of a buffer that receives the text.
// length - the size, in bytes, of |buffer|.
//
// Returns the number of bytes in the text (including the trailing NUL
// character) on success, 0 on error.
//
// Regardless of the platform, the |buffer| is always in UTF-16LE encoding.
// If |length| is less than the returned length, or |buffer| is NULL, |buffer|
// will not be modified.
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFTextObj_GetText(FPDF_PAGEOBJECT text_object,
FPDF_TEXTPAGE text_page,
FPDF_WCHAR* buffer,
unsigned long length);
// Experimental API.
// Get a bitmap rasterization of |text_object|. To render correctly, the caller
// must provide the |document| associated with |text_object|. If there is a
// |page| associated with |text_object|, the caller should provide that as well.
// The returned bitmap will be owned by the caller, and FPDFBitmap_Destroy()
// must be called on the returned bitmap when it is no longer needed.
//
// document - handle to a document associated with |text_object|.
// page - handle to an optional page associated with |text_object|.
// text_object - handle to a text object.
// scale - the scaling factor, which must be greater than 0.
//
// Returns the bitmap or NULL on failure.
FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV
FPDFTextObj_GetRenderedBitmap(FPDF_DOCUMENT document,
FPDF_PAGE page,
FPDF_PAGEOBJECT text_object,
float scale);
// Experimental API.
// Get the font of a text object.
//
// text - the handle to the text object.
//
// Returns a handle to the font object held by |text| which retains ownership.
FPDF_EXPORT FPDF_FONT FPDF_CALLCONV FPDFTextObj_GetFont(FPDF_PAGEOBJECT text);
// Experimental API.
// Get the font name of a font.
//
// font - the handle to the font object.
// buffer - the address of a buffer that receives the font name.
// length - the size, in bytes, of |buffer|.
//
// Returns the number of bytes in the font name (including the trailing NUL
// character) on success, 0 on error.
//
// Regardless of the platform, the |buffer| is always in UTF-8 encoding.
// If |length| is less than the returned length, or |buffer| is NULL, |buffer|
// will not be modified.
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFFont_GetFontName(FPDF_FONT font, char* buffer, unsigned long length);
// Experimental API.
// Get the decoded data from the |font| object.
//
// font - The handle to the font object. (Required)
// buffer - The address of a buffer that receives the font data.
// buflen - Length of the buffer.
// out_buflen - Pointer to variable that will receive the minimum buffer size
// to contain the font data. Not filled if the return value is
// FALSE. (Required)
//
// Returns TRUE on success. In which case, |out_buflen| will be filled, and
// |buffer| will be filled if it is large enough. Returns FALSE if any of the
// required parameters are null.
//
// The decoded data is the uncompressed font data. i.e. the raw font data after
// having all stream filters applied, when the data is embedded.
//
// If the font is not embedded, then this API will instead return the data for
// the substitution font it is using.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetFontData(FPDF_FONT font,
uint8_t* buffer,
size_t buflen,
size_t* out_buflen);
// Experimental API.
// Get whether |font| is embedded or not.
//
// font - the handle to the font object.
//
// Returns 1 if the font is embedded, 0 if it not, and -1 on failure.
FPDF_EXPORT int FPDF_CALLCONV FPDFFont_GetIsEmbedded(FPDF_FONT font);
// Experimental API.
// Get the descriptor flags of a font.
//
// font - the handle to the font object.
//
// Returns the bit flags specifying various characteristics of the font as
// defined in ISO 32000-1:2008, table 123, -1 on failure.
FPDF_EXPORT int FPDF_CALLCONV FPDFFont_GetFlags(FPDF_FONT font);
// Experimental API.
// Get the font weight of a font.
//
// font - the handle to the font object.
//
// Returns the font weight, -1 on failure.
// Typical values are 400 (normal) and 700 (bold).
FPDF_EXPORT int FPDF_CALLCONV FPDFFont_GetWeight(FPDF_FONT font);
// Experimental API.
// Get the italic angle of a font.
//
// font - the handle to the font object.
// angle - pointer where the italic angle will be stored
//
// The italic angle of a |font| is defined as degrees counterclockwise
// from vertical. For a font that slopes to the right, this will be negative.
//
// Returns TRUE on success; |angle| unmodified on failure.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetItalicAngle(FPDF_FONT font,
int* angle);
// Experimental API.
// Get ascent distance of a font.
//
// font - the handle to the font object.
// font_size - the size of the |font|.
// ascent - pointer where the font ascent will be stored
//
// Ascent is the maximum distance in points above the baseline reached by the
// glyphs of the |font|. One point is 1/72 inch (around 0.3528 mm).
//
// Returns TRUE on success; |ascent| unmodified on failure.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetAscent(FPDF_FONT font,
float font_size,
float* ascent);
// Experimental API.
// Get descent distance of a font.
//
// font - the handle to the font object.
// font_size - the size of the |font|.
// descent - pointer where the font descent will be stored
//
// Descent is the maximum distance in points below the baseline reached by the
// glyphs of the |font|. One point is 1/72 inch (around 0.3528 mm).
//
// Returns TRUE on success; |descent| unmodified on failure.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetDescent(FPDF_FONT font,
float font_size,
float* descent);
// Experimental API.
// Get the width of a glyph in a font.
//
// font - the handle to the font object.
// glyph - the glyph.
// font_size - the size of the font.
// width - pointer where the glyph width will be stored
//
// Glyph width is the distance from the end of the prior glyph to the next
// glyph. This will be the vertical distance for vertical writing.
//
// Returns TRUE on success; |width| unmodified on failure.
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetGlyphWidth(FPDF_FONT font,
uint32_t glyph,
float font_size,
float* width);
// Experimental API.
// Get the glyphpath describing how to draw a font glyph.
//
// font - the handle to the font object.
// glyph - the glyph being drawn.
// font_size - the size of the font.
//
// Returns the handle to the segment, or NULL on faiure.
FPDF_EXPORT FPDF_GLYPHPATH FPDF_CALLCONV FPDFFont_GetGlyphPath(FPDF_FONT font,
uint32_t glyph,
float font_size);
// Experimental API.
// Get number of segments inside glyphpath.
//
// glyphpath - handle to a glyph path.
//
// Returns the number of objects in |glyphpath| or -1 on failure.
FPDF_EXPORT int FPDF_CALLCONV
FPDFGlyphPath_CountGlyphSegments(FPDF_GLYPHPATH glyphpath);
// Experimental API.
// Get segment in glyphpath at index.
//
// glyphpath - handle to a glyph path.
// index - the index of a segment.
//
// Returns the handle to the segment, or NULL on faiure.
FPDF_EXPORT FPDF_PATHSEGMENT FPDF_CALLCONV
FPDFGlyphPath_GetGlyphPathSegment(FPDF_GLYPHPATH glyphpath, int index);
// Get number of page objects inside |form_object|.
//
// form_object - handle to a form object.
//
// Returns the number of objects in |form_object| on success, -1 on error.
FPDF_EXPORT int FPDF_CALLCONV
FPDFFormObj_CountObjects(FPDF_PAGEOBJECT form_object);
// Get page object in |form_object| at |index|.
//
// form_object - handle to a form object.
// index - the 0-based index of a page object.
//
// Returns the handle to the page object, or NULL on error.
FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFFormObj_GetObject(FPDF_PAGEOBJECT form_object, unsigned long index);
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
#endif // PUBLIC_FPDF_EDIT_H_