Merge to XFA: Create top-level public/ header directory.
Original Review URL: https://codereview.chromium.org/1135913002
BUG=pdfium:154
R=thestig@chromium.org
Review URL: https://codereview.chromium.org/1136703003
diff --git a/public/fpdfview.h b/public/fpdfview.h
new file mode 100644
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+++ b/public/fpdfview.h
@@ -0,0 +1,776 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// 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
+
+// NOTE: External docs refer to this file as "fpdfview.h", so do not rename
+// despite lack of consitency with other public files.
+
+#ifndef _FPDFVIEW_H_
+#define _FPDFVIEW_H_
+
+#if defined(_WIN32) && !defined(__WINDOWS__)
+#include <windows.h>
+#endif
+
+// TODO: remove the #define when XFA is officially in pdfium
+#define PDF_USE_XFA
+
+// Data types
+typedef void* FPDF_MODULEMGR;
+
+// PDF types
+typedef void* FPDF_DOCUMENT;
+typedef void* FPDF_PAGE;
+typedef void* FPDF_WIDGET;
+typedef void* FPDF_STRINGHANDLE;
+typedef void* FPDF_PAGEOBJECT; // Page object(text, path, etc)
+typedef void* FPDF_PATH;
+typedef void* FPDF_CLIPPATH;
+typedef void* FPDF_BITMAP;
+typedef void* FPDF_FONT;
+
+typedef void* FPDF_TEXTPAGE;
+typedef void* FPDF_SCHHANDLE;
+typedef void* FPDF_PAGELINK;
+typedef void* FPDF_HMODULE;
+typedef void* FPDF_DOCSCHHANDLE;
+
+typedef void* FPDF_BOOKMARK;
+typedef void* FPDF_DEST;
+typedef void* FPDF_ACTION;
+typedef void* FPDF_LINK;
+typedef void* FPDF_PAGERANGE;
+
+// Basic data types
+typedef void* FPDF_LPVOID;
+typedef void const* FPDF_LPCVOID;
+typedef int FPDF_RESULT;
+typedef int FPDF_BOOL;
+typedef int FPDF_ERROR;
+typedef unsigned long FPDF_DWORD;
+
+typedef float FS_FLOAT;
+
+// Duplex types
+typedef enum _FPDF_DUPLEXTYPE_ {
+ DuplexUndefined = 0,
+ Simplex,
+ DuplexFlipShortEdge,
+ DuplexFlipLongEdge
+} FPDF_DUPLEXTYPE;
+
+// String types
+typedef unsigned short FPDF_WCHAR;
+typedef unsigned char const* FPDF_LPCBYTE;
+typedef char const* FPDF_LPCSTR;
+
+// FPDFSDK may use three types of strings: byte string, wide string (UTF-16LE encoded), and platform dependent string
+typedef const char* FPDF_BYTESTRING;
+
+typedef const unsigned short* FPDF_WIDESTRING; // Foxit PDF SDK always use UTF-16LE encoding wide string,
+ // each character use 2 bytes (except surrogation), with low byte first.
+
+#ifndef _FPDF_DEF_STR_
+#define _FPDF_DEF_STR_
+/** @brief Structure for byte string.
+ *
+ * @note In SDK, a byte string commonly means a UTF-16LE format string.
+ */
+typedef struct _FPDF_BSTR
+{
+ /**
+ * @brief String buffer.
+ */
+ char* str;
+ /**
+ * @brief Length of a string, in bytes.
+ */
+ int len;
+} FPDF_BSTR;
+
+#endif
+
+// For Windows programmers: for most case it's OK to treat FPDF_WIDESTRING as Windows unicode string,
+// however, special care needs to be taken if you expect to process Unicode larger than 0xffff.
+// For Linux/Unix programmers: most compiler/library environment uses 4 bytes for a Unicode character,
+// you have to convert between FPDF_WIDESTRING and system wide string by yourself.
+
+#ifdef _WIN32_WCE
+typedef const unsigned short* FPDF_STRING;
+#else
+typedef const char* FPDF_STRING;
+#endif
+
+#ifndef _FS_DEF_MATRIX_
+#define _FS_DEF_MATRIX_
+/** @brief Matrix for transformation. */
+typedef struct _FS_MATRIX_
+{
+ float a; /**< @brief Coefficient a.*/
+ float b; /**< @brief Coefficient b.*/
+ float c; /**< @brief Coefficient c.*/
+ float d; /**< @brief Coefficient d.*/
+ float e; /**< @brief Coefficient e.*/
+ float f; /**< @brief Coefficient f.*/
+} FS_MATRIX;
+#endif
+
+#ifndef _FS_DEF_RECTF_
+#define _FS_DEF_RECTF_
+/** @brief Rectangle area(float) in device or page coordination system. */
+typedef struct _FS_RECTF_
+{
+ /**@{*/
+ /** @brief The x-coordinate of the left-top corner. */
+ float left;
+ /** @brief The y-coordinate of the left-top corner. */
+ float top;
+ /** @brief The x-coordinate of the right-bottom corner. */
+ float right;
+ /** @brief The y-coordinate of the right-bottom corner. */
+ float bottom;
+ /**@}*/
+}* FS_LPRECTF, FS_RECTF;
+/** @brief Const Pointer to ::FS_RECTF structure.*/
+typedef const FS_RECTF* FS_LPCRECTF;
+#endif
+
+#if defined(_WIN32) && defined(FPDFSDK_EXPORTS)
+// On Windows system, functions are exported in a DLL
+#define DLLEXPORT __declspec( dllexport )
+#define STDCALL __stdcall
+#else
+#define DLLEXPORT
+#define STDCALL
+#endif
+
+extern const char g_ExpireDate[];
+extern const char g_ModuleCodes[];
+
+// Exported Functions
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Function: FPDF_InitLibrary
+// Initialize the FPDFSDK library
+// Parameters:
+// None
+// Return value:
+// None.
+// Comments:
+// You have to call this function before you can call any PDF processing functions.
+
+DLLEXPORT void STDCALL FPDF_InitLibrary();
+
+
+// Function: FPDF_DestroyLibary
+// Release all resources allocated by the FPDFSDK library.
+// Parameters:
+// None.
+// Return value:
+// None.
+// Comments:
+// You can call this function to release all memory blocks allocated by the library.
+// After this function called, you should not call any PDF processing functions.
+DLLEXPORT void STDCALL FPDF_DestroyLibrary();
+
+//Policy for accessing the local machine time.
+#define FPDF_POLICY_MACHINETIME_ACCESS 0
+
+// Function: FPDF_SetSandBoxPolicy
+// Set the policy for the sandbox environment.
+// Parameters:
+// policy - The specified policy for setting, for example:FPDF_POLICY_MACHINETIME_ACCESS.
+// enable - True for enable, False for disable the policy.
+// Return value:
+// None.
+DLLEXPORT void STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable);
+
+/**
+* Open and load a PDF document.
+* @param[in] file_path - Path to the PDF file (including extension).
+* @param[in] password - A string used as the password for PDF file.
+* If no password needed, empty or NULL can be used.
+* @note Loaded document can be closed by FPDF_CloseDocument.
+* If this function fails, you can use FPDF_GetLastError() to retrieve
+* the reason why it fails.
+* The application should call ::FPDF_LoadXFA function after PDF document loaded
+* to support XFA fields in fpdfformfill.h file.
+*
+* @retval A handle to the loaded document. If failed, NULL is returned.
+*/
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path,
+ FPDF_BYTESTRING password);
+
+// Function: FPDF_LoadMemDocument
+// Open and load a PDF document from memory.
+// Parameters:
+// data_buf - Pointer to a buffer containing the PDF document.
+// size - Number of bytes in the PDF document.
+// password - A string used as the password for PDF file.
+// If no password needed, empty or NULL can be used.
+// Return value:
+// A handle to the loaded document. If failed, NULL is returned.
+// Comments:
+// The memory buffer must remain valid when the document is open.
+// Loaded document can be closed by FPDF_CloseDocument.
+// If this function fails, you can use FPDF_GetLastError() to retrieve
+// the reason why it fails.
+// Notes:
+// The application should call ::FPDF_LoadXFA function after PDF document loaded
+// to support XFA fields in fpdfformfill.h file.
+//
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf,
+ int size, FPDF_BYTESTRING password);
+
+// Structure for custom file access.
+typedef struct {
+ // File length, in bytes.
+ unsigned long m_FileLen;
+
+ // A function pointer for getting a block of data from specific position.
+ // Position is specified by byte offset from beginning of the file.
+ // The position and size will never go out range of file length.
+ // It may be possible for FPDFSDK to call this function multiple times for same position.
+ // Return value: should be non-zero if successful, zero for error.
+ int (*m_GetBlock)(void* param, unsigned long position, unsigned char* pBuf, unsigned long size);
+
+ // A custom pointer for all implementation specific data.
+ // This pointer will be used as the first parameter to m_GetBlock callback.
+ void* m_Param;
+} FPDF_FILEACCESS;
+
+/**
+ * @brief Structure for file reading or writing (I/O).
+ *
+ * @note This is a handler and should be implemented by callers.
+ */
+typedef struct _FPDF_FILEHANDLER
+{
+ /**
+ * @brief User-defined data.
+ * @note Callers can use this field to track controls.
+ */
+ FPDF_LPVOID clientData;
+ /**
+ * @brief Callback function to release the current file stream object.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ *
+ * @return None.
+ */
+ void (*Release)(FPDF_LPVOID clientData);
+ /**
+ * @brief Callback function to retrieve the current file stream size.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ *
+ * @return Size of file stream.
+ */
+ FPDF_DWORD (*GetSize)(FPDF_LPVOID clientData);
+ /**
+ * @brief Callback function to read data from the current file stream.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ * @param[in] offset Offset position starts from the beginning of file stream. This parameter indicates reading position.
+ * @param[in] buffer Memory buffer to store data which are read from file stream. This parameter should not be <b>NULL</b>.
+ * @param[in] size Size of data which should be read from file stream, in bytes. The buffer indicated by the parameter <i>buffer</i> should be enough to store specified data.
+ *
+ * @return 0 for success, other value for failure.
+ */
+ FPDF_RESULT (*ReadBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPVOID buffer, FPDF_DWORD size);
+ /**
+ * @brief Callback function to write data into the current file stream.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ * @param[in] offset Offset position starts from the beginning of file stream. This parameter indicates writing position.
+ * @param[in] buffer Memory buffer contains data which is written into file stream. This parameter should not be <b>NULL</b>.
+ * @param[in] size Size of data which should be written into file stream, in bytes.
+ *
+ * @return 0 for success, other value for failure.
+ */
+ FPDF_RESULT (*WriteBlock)(FPDF_LPVOID clientData, FPDF_DWORD offset, FPDF_LPCVOID buffer, FPDF_DWORD size);
+ /**
+ * @brief Callback function to flush all internal accessing buffers.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ *
+ * @return 0 for success, other value for failure.
+ */
+ FPDF_RESULT (*Flush)(FPDF_LPVOID clientData);
+ /**
+ * @brief Callback function to change file size.
+ *
+ * @details This function is called under writing mode usually. Implementer can determine whether to realize it based on application requests.
+ *
+ * @param[in] clientData Pointer to user-defined data.
+ * @param[in] size New size of file stream, in bytes.
+ *
+ * @return 0 for success, other value for failure.
+ */
+ FPDF_RESULT (*Truncate)(FPDF_LPVOID clientData, FPDF_DWORD size);
+
+} FPDF_FILEHANDLER, *FPDF_LPFILEHANDLER;
+
+// Function: FPDF_LoadCustomDocument
+// Load PDF document from a custom access descriptor.
+// Parameters:
+// pFileAccess - A structure for access the file.
+// password - Optional password for decrypting the PDF file.
+// Return value:
+// A handle to the loaded document. If failed, NULL is returned.
+// Comments:
+// The application should maintain the file resources being valid until the PDF document close.
+// Loaded document can be closed by FPDF_CloseDocument.
+// Notes:
+// The application should call ::FPDF_LoadXFA function after PDF document loaded
+// to support XFA fields in fpdfformfill.h file.
+//
+DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
+ FPDF_BYTESTRING password);
+
+// Function: FPDF_GetFileVersion
+// Get the file version of the specific PDF document.
+// Parameters:
+// doc - Handle to document.
+// fileVersion - The PDF file version. File version: 14 for 1.4, 15 for 1.5, ...
+// Return value:
+// TRUE if this call succeed, If failed, FALSE is returned.
+// Comments:
+// If the document is created by function ::FPDF_CreateNewDocument, then this function would always fail.
+//
+DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc, int* fileVersion);
+
+#define FPDF_ERR_SUCCESS 0 // No error.
+#define FPDF_ERR_UNKNOWN 1 // Unknown error.
+#define FPDF_ERR_FILE 2 // File not found or could not be opened.
+#define FPDF_ERR_FORMAT 3 // File not in PDF format or corrupted.
+#define FPDF_ERR_PASSWORD 4 // Password required or incorrect password.
+#define FPDF_ERR_SECURITY 5 // Unsupported security scheme.
+#define FPDF_ERR_PAGE 6 // Page not found or content error.
+#define FPDF_ERR_XFALOAD 7 // Load XFA error.
+#define FPDF_ERR_XFALAYOUT 8 // Layout XFA error.
+
+// Function: FPDF_GetLastError
+// Get last error code when an SDK function failed.
+// Parameters:
+// None.
+// Return value:
+// A 32-bit integer indicating error codes (defined above).
+// Comments:
+// If the previous SDK call succeeded, the return value of this function
+// is not defined.
+//
+DLLEXPORT unsigned long STDCALL FPDF_GetLastError();
+
+// Function: FPDF_GetDocPermission
+// Get file permission flags of the document.
+// Parameters:
+// document - Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+// A 32-bit integer indicating permission flags. Please refer to PDF Reference for
+// detailed description. If the document is not protected, 0xffffffff will be returned.
+//
+DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document);
+
+// Function: FPDF_GetSecurityHandlerRevision
+// Get the revision for security handler.
+// Parameters:
+// document - Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+// The security handler revision number. Please refer to PDF Reference for
+// detailed description. If the document is not protected, -1 will be returned.
+//
+DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document);
+
+// Function: FPDF_GetPageCount
+// Get total number of pages in a document.
+// Parameters:
+// document - Handle to document. Returned by FPDF_LoadDocument function.
+// Return value:
+// Total number of pages in the document.
+//
+DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document);
+
+// Function: FPDF_LoadPage
+// Load a page inside a document.
+// Parameters:
+// document - Handle to document. Returned by FPDF_LoadDocument function.
+// page_index - Index number of the page. 0 for the first page.
+// Return value:
+// A handle to the loaded page. If failed, NULL is returned.
+// Comments:
+// Loaded page can be rendered to devices using FPDF_RenderPage function.
+// Loaded page can be closed by FPDF_ClosePage.
+//
+DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index);
+
+// Function: FPDF_GetPageWidth
+// Get page width.
+// Parameters:
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// Return value:
+// Page width (excluding non-displayable area) measured in points.
+// One point is 1/72 inch (around 0.3528 mm).
+//
+DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page);
+
+// Function: FPDF_GetPageHeight
+// Get page height.
+// Parameters:
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// Return value:
+// Page height (excluding non-displayable area) measured in points.
+// One point is 1/72 inch (around 0.3528 mm)
+//
+DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page);
+
+// Function: FPDF_GetPageSizeByIndex
+// Get the size of a page by index.
+// Parameters:
+// document - Handle to document. Returned by FPDF_LoadDocument function.
+// page_index - Page index, zero for the first page.
+// width - Pointer to a double value receiving the page width (in points).
+// height - Pointer to a double value receiving the page height (in points).
+// Return value:
+// Non-zero for success. 0 for error (document or page not found).
+//
+DLLEXPORT int STDCALL FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document, int page_index, double* width, double* height);
+
+
+// Page rendering flags. They can be combined with bit OR.
+#define FPDF_ANNOT 0x01 // Set if annotations are to be rendered.
+#define FPDF_LCD_TEXT 0x02 // Set if using text rendering optimized for LCD display.
+#define FPDF_NO_NATIVETEXT 0x04 // Don't use the native text output available on some platforms
+#define FPDF_GRAYSCALE 0x08 // Grayscale output.
+#define FPDF_DEBUG_INFO 0x80 // Set if you want to get some debug info.
+ // Please discuss with Foxit first if you need to collect debug info.
+#define FPDF_NO_CATCH 0x100 // Set if you don't want to catch exception.
+#define FPDF_RENDER_LIMITEDIMAGECACHE 0x200 // Limit image cache size.
+#define FPDF_RENDER_FORCEHALFTONE 0x400 // Always use halftone for image stretching.
+#define FPDF_PRINTING 0x800 // Render for printing.
+#define FPDF_REVERSE_BYTE_ORDER 0x10 //set whether render in a reverse Byte order, this flag only
+ //enable when render to a bitmap.
+#ifdef _WIN32
+// Function: FPDF_RenderPage
+// Render contents in a page to a device (screen, bitmap, or printer).
+// This function is only supported on Windows system.
+// Parameters:
+// dc - Handle to device context.
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// start_x - Left pixel position of the display area in the device coordinate.
+// start_y - Top pixel position of the display area in the device coordinate.
+// size_x - Horizontal size (in pixels) for displaying the page.
+// size_y - Vertical size (in pixels) for displaying the page.
+// rotate - Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+// 2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+// flags - 0 for normal display, or combination of flags defined above.
+// Return value:
+// None.
+// Notes:
+// The method can not support to render the page for the document consists of dynamic XFA fields.
+//
+DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc, FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
+ int rotate, int flags);
+#endif
+
+// Function: FPDF_RenderPageBitmap
+// Render contents in a page to a device independent bitmap
+// Parameters:
+// bitmap - Handle to the device independent bitmap (as the output buffer).
+// Bitmap handle can be created by FPDFBitmap_Create function.
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// start_x - Left pixel position of the display area in the bitmap coordinate.
+// start_y - Top pixel position of the display area in the bitmap coordinate.
+// size_x - Horizontal size (in pixels) for displaying the page.
+// size_y - Vertical size (in pixels) for displaying the page.
+// rotate - Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+// 2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+// flags - 0 for normal display, or combination of flags defined above.
+// Return value:
+// None.
+// Notes:
+// The method can not support to render the page for the document consists of dynamic XFA fields.
+//
+DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap, FPDF_PAGE page, int start_x, int start_y,
+ int size_x, int size_y, int rotate, int flags);
+
+// Function: FPDF_ClosePage
+// Close a loaded PDF page.
+// Parameters:
+// page - Handle to the loaded page.
+// Return value:
+// None.
+//
+DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page);
+
+// Function: FPDF_CloseDocument
+// Close a loaded PDF document.
+// Parameters:
+// document - Handle to the loaded document.
+// Return value:
+// None.
+//
+DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document);
+
+// Function: FPDF_DeviceToPage
+// Convert the screen coordinate of a point to page coordinate.
+// Parameters:
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// start_x - Left pixel position of the display area in the device coordinate.
+// start_y - Top pixel position of the display area in the device coordinate.
+// size_x - Horizontal size (in pixels) for displaying the page.
+// size_y - Vertical size (in pixels) for displaying the page.
+// rotate - Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+// 2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+// device_x - X value in device coordinate, for the point to be converted.
+// device_y - Y value in device coordinate, for the point to be converted.
+// page_x - A Pointer to a double receiving the converted X value in page coordinate.
+// page_y - A Pointer to a double receiving the converted Y value in page coordinate.
+// Return value:
+// None.
+// Comments:
+// The page coordinate system has its origin at left-bottom corner of the page, with X axis goes along
+// the bottom side to the right, and Y axis goes along the left side upward. NOTE: this coordinate system
+// can be altered when you zoom, scroll, or rotate a page, however, a point on the page should always have
+// the same coordinate values in the page coordinate system.
+//
+// The device coordinate system is device dependent. For screen device, its origin is at left-top
+// corner of the window. However this origin can be altered by Windows coordinate transformation
+// utilities. You must make sure the start_x, start_y, size_x, size_y and rotate parameters have exactly
+// same values as you used in FPDF_RenderPage() function call.
+//
+DLLEXPORT void STDCALL FPDF_DeviceToPage(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
+ int rotate, int device_x, int device_y, double* page_x, double* page_y);
+
+// Function: FPDF_PageToDevice
+// Convert the page coordinate of a point to screen coordinate.
+// Parameters:
+// page - Handle to the page. Returned by FPDF_LoadPage function.
+// start_x - Left pixel position of the display area in the device coordinate.
+// start_y - Top pixel position of the display area in the device coordinate.
+// size_x - Horizontal size (in pixels) for displaying the page.
+// size_y - Vertical size (in pixels) for displaying the page.
+// rotate - Page orientation: 0 (normal), 1 (rotated 90 degrees clockwise),
+// 2 (rotated 180 degrees), 3 (rotated 90 degrees counter-clockwise).
+// page_x - X value in page coordinate, for the point to be converted.
+// page_y - Y value in page coordinate, for the point to be converted.
+// device_x - A pointer to an integer receiving the result X value in device coordinate.
+// device_y - A pointer to an integer receiving the result Y value in device coordinate.
+// Return value:
+// None.
+// Comments:
+// See comments of FPDF_DeviceToPage() function.
+//
+DLLEXPORT void STDCALL FPDF_PageToDevice(FPDF_PAGE page, int start_x, int start_y, int size_x, int size_y,
+ int rotate, double page_x, double page_y, int* device_x, int* device_y);
+
+// Function: FPDFBitmap_Create
+// Create a Foxit Device Independent Bitmap (FXDIB).
+// Parameters:
+// width - Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
+// height - Number of pixels in a vertical line of the bitmap. Must be greater than 0.
+// alpha - A flag indicating whether alpha channel is used. Non-zero for using alpha, zero for not using.
+// Return value:
+// The created bitmap handle, or NULL if parameter error or out of memory.
+// Comments:
+// An FXDIB always use 4 byte per pixel. The first byte of a pixel is always double word aligned.
+// Each pixel contains red (R), green (G), blue (B) and optionally alpha (A) values.
+// The byte order is BGRx (the last byte unused if no alpha channel) or BGRA.
+//
+// The pixels in a horizontal line (also called scan line) are stored side by side, with left most
+// pixel stored first (with lower memory address). Each scan line uses width*4 bytes.
+//
+// Scan lines are stored one after another, with top most scan line stored first. There is no gap
+// between adjacent scan lines.
+//
+// This function allocates enough memory for holding all pixels in the bitmap, but it doesn't
+// initialize the buffer. Applications can use FPDFBitmap_FillRect to fill the bitmap using any color.
+DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width, int height, int alpha);
+
+// More DIB formats
+#define FPDFBitmap_Gray 1 // Gray scale bitmap, one byte per pixel.
+#define FPDFBitmap_BGR 2 // 3 bytes per pixel, byte order: blue, green, red.
+#define FPDFBitmap_BGRx 3 // 4 bytes per pixel, byte order: blue, green, red, unused.
+#define FPDFBitmap_BGRA 4 // 4 bytes per pixel, byte order: blue, green, red, alpha.
+
+// Function: FPDFBitmap_CreateEx
+// Create a Foxit Device Independent Bitmap (FXDIB)
+// Parameters:
+// width - Number of pixels in a horizontal line of the bitmap. Must be greater than 0.
+// height - Number of pixels in a vertical line of the bitmap. Must be greater than 0.
+// format - A number indicating for bitmap format, as defined above.
+// first_scan - A pointer to the first byte of first scan line, for external buffer
+// only. If this parameter is NULL, then the SDK will create its own buffer.
+// stride - Number of bytes for each scan line, for external buffer only..
+// Return value:
+// The created bitmap handle, or NULL if parameter error or out of memory.
+// Comments:
+// Similar to FPDFBitmap_Create function, with more formats and external buffer supported.
+// Bitmap created by this function can be used in any place that a FPDF_BITMAP handle is
+// required.
+//
+// If external scanline buffer is used, then the application should destroy the buffer
+// by itself. FPDFBitmap_Destroy function will not destroy the buffer.
+//
+DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_CreateEx(int width, int height, int format, void* first_scan, int stride);
+
+// Function: FPDFBitmap_FillRect
+// Fill a rectangle area in an FXDIB.
+// Parameters:
+// bitmap - The handle to the bitmap. Returned by FPDFBitmap_Create function.
+// left - The left side position. Starting from 0 at the left-most pixel.
+// top - The top side position. Starting from 0 at the top-most scan line.
+// width - Number of pixels to be filled in each scan line.
+// height - Number of scan lines to be filled.
+// color - A 32-bit value specifing the color, in 8888 ARGB format.
+// Return value:
+// None.
+// Comments:
+// This function set the color and (optionally) alpha value in specified region of the bitmap.
+// NOTE: If alpha channel is used, this function does NOT composite the background with the source color,
+// instead the background will be replaced by the source color and alpha.
+// If alpha channel is not used, the "alpha" parameter is ignored.
+//
+DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap, int left, int top, int width, int height, FPDF_DWORD color);
+
+// Function: FPDFBitmap_GetBuffer
+// Get data buffer of an FXDIB
+// Parameters:
+// bitmap - Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+// The pointer to the first byte of the bitmap buffer.
+// Comments:
+// The stride may be more than width * number of bytes per pixel
+// Applications can use this function to get the bitmap buffer pointer, then manipulate any color
+// and/or alpha values for any pixels in the bitmap.
+DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap);
+
+// Function: FPDFBitmap_GetWidth
+// Get width of an FXDIB.
+// Parameters:
+// bitmap - Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+// The number of pixels in a horizontal line of the bitmap.
+DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap);
+
+// Function: FPDFBitmap_GetHeight
+// Get height of an FXDIB.
+// Parameters:
+// bitmap - Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+// The number of pixels in a vertical line of the bitmap.
+DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap);
+
+// Function: FPDFBitmap_GetStride
+// Get number of bytes for each scan line in the bitmap buffer.
+// Parameters:
+// bitmap - Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+// The number of bytes for each scan line in the bitmap buffer.
+// Comments:
+// The stride may be more than width * number of bytes per pixel
+DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap);
+
+// Function: FPDFBitmap_Destroy
+// Destroy an FXDIB and release all related buffers.
+// Parameters:
+// bitmap - Handle to the bitmap. Returned by FPDFBitmap_Create function.
+// Return value:
+// None.
+// Comments:
+// This function will not destroy any external buffer.
+//
+DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap);
+
+// Function: FPDF_VIEWERREF_GetPrintScaling
+// Whether the PDF document prefers to be scaled or not.
+// Parameters:
+// document - Handle to the loaded document.
+// Return value:
+// None.
+//
+DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document);
+
+// Function: FPDF_VIEWERREF_GetNumCopies
+// Returns the number of copies to be printed.
+// Parameters:
+// document - Handle to the loaded document.
+// Return value:
+// The number of copies to be printed.
+//
+DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document);
+
+// Function: FPDF_VIEWERREF_GetPrintPageRange
+// Page numbers to initialize print dialog box when file is printed.
+// Parameters:
+// document - Handle to the loaded document.
+// Return value:
+// The print page range to be used for printing.
+//
+DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document);
+
+// Function: FPDF_VIEWERREF_GetDuplex
+// Returns the paper handling option to be used when printing from print dialog.
+// Parameters:
+// document - Handle to the loaded document.
+// Return value:
+// The paper handling option to be used when printing.
+//
+DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document);
+
+// Function: FPDF_CountNamedDests
+// Get the count of named destinations in the PDF document.
+// Parameters:
+// document - Handle to a document
+// Return value:
+// The count of named destinations.
+DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document);
+
+// Function: FPDF_GetNamedDestByName
+// get a special dest handle by the index.
+// Parameters:
+// document - Handle to the loaded document.
+// name - The name of a special named dest.
+// Return value:
+// The handle of the dest.
+//
+DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name);
+
+// Function: FPDF_GetNamedDest
+// Get the specified named destinations of the PDF document by index.
+// Parameters:
+// document - Handle to a document
+// index - The index of named destination.
+// buffer - The buffer to obtain destination name, used as wchar_t*.
+// buflen [in/out] - Size of the buffer in bytes on input, length of the result in bytes on output or -1 if the buffer is too small.
+// Return value:
+// The destination handle of a named destination, or NULL if no named destination corresponding to |index|.
+// Comments:
+// Call this function twice to get the name of the named destination:
+// 1) First time pass in |buffer| as NULL and get buflen.
+// 2) Second time pass in allocated |buffer| and buflen to retrieve |buffer|, which should be used as wchar_t*.
+// If buflen is not sufficiently large, it will be set to -1 upon return.
+//
+DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document, int index, void* buffer, long& buflen);
+
+// Function: FPDF_BStr_Init
+// Helper function to initialize a byte string.
+DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Init(FPDF_BSTR* str);
+
+// Function: FPDF_BStr_Set
+// Helper function to set string data.
+DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Set(FPDF_BSTR* str, FPDF_LPCSTR bstr, int length);
+
+// Function: FPDF_BStr_Clear
+// Helper function to clear a byte string.
+DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Clear(FPDF_BSTR* str);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // _FPDFVIEW_H_