C++实现将PDF转为BMP(PDFiumSDK)

// 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 #ifndef PUBLIC_FPDF_FORMFILL_H_ #define PUBLIC_FPDF_FORMFILL_H_ // NOLINTNEXTLINE(build/include) #include "fpdfview.h" // These values are return values for a public API, so should not be changed // other than the count when adding new values. #define FORMTYPE_NONE 0 // Document contains no forms #define FORMTYPE_ACRO_FORM 1 // Forms are specified using AcroForm spec #define FORMTYPE_XFA_FULL 2 // Forms are specified using the entire XFA // spec #define FORMTYPE_XFA_FOREGROUND 3 // Forms are specified using the XFAF subset // of XFA spec #define FORMTYPE_COUNT 4 // The number of form types #define JSPLATFORM_ALERT_BUTTON_OK 0 // OK button #define JSPLATFORM_ALERT_BUTTON_OKCANCEL 1 // OK & Cancel buttons #define JSPLATFORM_ALERT_BUTTON_YESNO 2 // Yes & No buttons #define JSPLATFORM_ALERT_BUTTON_YESNOCANCEL 3 // Yes, No & Cancel buttons #define JSPLATFORM_ALERT_BUTTON_DEFAULT JSPLATFORM_ALERT_BUTTON_OK #define JSPLATFORM_ALERT_ICON_ERROR 0 // Error #define JSPLATFORM_ALERT_ICON_WARNING 1 // Warning #define JSPLATFORM_ALERT_ICON_QUESTION 2 // Question #define JSPLATFORM_ALERT_ICON_STATUS 3 // Status #define JSPLATFORM_ALERT_ICON_ASTERISK 4 // Asterisk #define JSPLATFORM_ALERT_ICON_DEFAULT JSPLATFORM_ALERT_ICON_ERROR #define JSPLATFORM_ALERT_RETURN_OK 1 // OK #define JSPLATFORM_ALERT_RETURN_CANCEL 2 // Cancel #define JSPLATFORM_ALERT_RETURN_NO 3 // No #define JSPLATFORM_ALERT_RETURN_YES 4 // Yes #define JSPLATFORM_BEEP_ERROR 0 // Error #define JSPLATFORM_BEEP_WARNING 1 // Warning #define JSPLATFORM_BEEP_QUESTION 2 // Question #define JSPLATFORM_BEEP_STATUS 3 // Status #define JSPLATFORM_BEEP_DEFAULT 4 // Default // Exported Functions #ifdef __cplusplus extern "C" { #endif typedef struct _IPDF_JsPlatform { /** * Version number of the interface. Currently must be 2. **/ int version; /* Version 1. */ /** * Method: app_alert * pop up a dialog to show warning or hint. * Interface Version: * 1 * Implementation Required: * yes * Parameters: * pThis - Pointer to the interface structure itself. * Msg - A string containing the message to be displayed. * Title - The title of the dialog. * Type - The type of button group, see * JSPLATFORM_ALERT_BUTTON_* above. * nIcon - The icon type, see see * JSPLATFORM_ALERT_ICON_* above . * * Return Value: * Option selected by user in dialogue, see * JSPLATFORM_ALERT_RETURN_* above. */ int (*app_alert)(struct _IPDF_JsPlatform* pThis, FPDF_WIDESTRING Msg, FPDF_WIDESTRING Title, int Type, int Icon); /** * Method: app_beep * Causes the system to play a sound. * Interface Version: * 1 * Implementation Required: * yes * Parameters: * pThis - Pointer to the interface structure itself * nType - The sound type, see see JSPLATFORM_BEEP_TYPE_* * above. * * Return Value: * None */ void (*app_beep)(struct _IPDF_JsPlatform* pThis, int nType); /** * Method: app_response * Displays a dialog box containing a question and an entry field for * the user to reply to the question. * Interface Version: * 1 * Implementation Required: * yes * Parameters: * pThis - Pointer to the interface structure itself * Question - The question to be posed to the user. * Title - The title of the dialog box. * Default - A default value for the answer to the question. If * not specified, no default value is presented. * cLabel - A short string to appear in front of and on the * same line as the edit text field. * bPassword - If true, indicates that the user's response should * show as asterisks (*) or bullets (?) to mask the response, which might be * sensitive information. The default is false. * response - A string buffer allocated by SDK, to receive the * user's response. * length - The length of the buffer, number of bytes. * Currently, It's always be 2048. * Return Value: * Number of bytes the complete user input would actually require, not * including trailing zeros, regardless of the value of the length * parameter or the presence of the response buffer. * Comments: * No matter on what platform, the response buffer should be always * written using UTF-16LE encoding. If a response buffer is * present and the size of the user input exceeds the capacity of the * buffer as specified by the length parameter, only the * first "length" bytes of the user input are to be written to the * buffer. */ int (*app_response)(struct _IPDF_JsPlatform* pThis, FPDF_WIDESTRING Question, FPDF_WIDESTRING Title, FPDF_WIDESTRING Default, FPDF_WIDESTRING cLabel, FPDF_BOOL bPassword, void* response, int length); /* * Method: Doc_getFilePath * Get the file path of the current document. * Interface Version: * 1 * Implementation Required: * yes * Parameters: * pThis - Pointer to the interface structure itself * filePath - The string buffer to receive the file path. Can be * NULL. * length - The length of the buffer, number of bytes. Can be * 0. * Return Value: * Number of bytes the filePath consumes, including trailing zeros. * Comments: * The filePath should be always input in local encoding. * * The return value always indicated number of bytes required for the * buffer , even when there is no buffer specified, or the buffer size is * less than required. In this case, the buffer will not be modified. */ int (*Doc_getFilePath)(struct _IPDF_JsPlatform* pThis, void* filePath, int length); /* * Method: Doc_mail * Mails the data buffer as an attachment to all recipients, with or * without user interaction. * Interface Version: * 1 * Implementation Required: * yes * Parameters: * pThis - Pointer to the interface structure itself * mailData - Pointer to the data buffer to be sent.Can be NULL. * length - The size,in bytes, of the buffer pointed by * mailData parameter.Can be 0. * bUI - If true, the rest of the parameters are used in a * compose-new-message window that is displayed to the user. If false, the cTo * parameter is required and all others are optional. * To - A semicolon-delimited list of recipients for the * message. * Subject - The subject of the message. The length limit is 64 * KB. * CC - A semicolon-delimited list of CC recipients for * the message. * BCC - A semicolon-delimited list of BCC recipients for * the message. * Msg - The content of the message. The length limit is 64 * KB. * Return Value: * None. * Commen