Create top-level public/ header directory.

fpdfsdk/include/fpdftext.h

Index: fpdfsdk/include/fpdftext.h
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-// 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 _FPDFTEXT_H_
-#define _FPDFTEXT_H_
-
-#include "fpdfview.h"
-
-// Exported Functions
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Function: FPDFText_LoadPage
-//			Prepare information about all characters in a page.
-// Parameters:
-//			page	-	Handle to the page. Returned by FPDF_LoadPage function (in FPDFVIEW module).
-// Return value:
-//			A handle to the text page information structure.
-//			NULL if something goes wrong.
-// Comments:
-//			Application must call FPDFText_ClosePage to release the text page information.
-//
-DLLEXPORT FPDF_TEXTPAGE	STDCALL FPDFText_LoadPage(FPDF_PAGE page);
-
-// Function: FPDFText_ClosePage
-//			Release all resources allocated for a text page information structure.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-// Return Value:
-//			None.
-//
-DLLEXPORT void STDCALL FPDFText_ClosePage(FPDF_TEXTPAGE text_page);
-
-// Function: FPDFText_CountChars
-//			Get number of characters in a page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-// Return value:
-//			Number of characters in the page. Return -1 for error.
-//			Generated characters, like additional space characters, new line characters, are also counted.
-// Comments:
-//			Characters in a page form a "stream", inside the stream, each character has an index.
-//			We will use the index parameters in many of FPDFTEXT functions. The first character in the page
-//			has an index value of zero.
-//
-DLLEXPORT int STDCALL FPDFText_CountChars(FPDF_TEXTPAGE text_page);
-
-// Function: FPDFText_GetUnicode
-//			Get Unicode of a character in a page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			index		-	Zero-based index of the character.
-// Return value:
-//			The Unicode of the particular character.
-//			If a character is not encoded in Unicode and Foxit engine can't convert to Unicode,
-//			the return value will be zero.
-//
-DLLEXPORT unsigned int STDCALL FPDFText_GetUnicode(FPDF_TEXTPAGE text_page, int index);
-
-// Function: FPDFText_GetFontSize
-//			Get the font size of a particular character.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			index		-	Zero-based index of the character.
-// Return value:
-//			The font size of the particular character, measured in points (about 1/72 inch).
-//			This is the typographic size of the font (so called "em size").
-//
-DLLEXPORT double STDCALL FPDFText_GetFontSize(FPDF_TEXTPAGE text_page, int index);
-
-// Function: FPDFText_GetCharBox
-//			Get bounding box of a particular character.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			index		-	Zero-based index of the character.
-//			left		-	Pointer to a double number receiving left position of the character box.
-//			right		-	Pointer to a double number receiving right position of the character box.
-//			bottom		-	Pointer to a double number receiving bottom position of the character box.
-//			top			-	Pointer to a double number receiving top position of the character box.
-// Return Value:
-//			None.
-// Comments:
-//			All positions are measured in PDF "user space".
-//
-DLLEXPORT void STDCALL FPDFText_GetCharBox(FPDF_TEXTPAGE text_page, int index, double* left,
-													double* right, double* bottom, double* top);
-
-// Function: FPDFText_GetCharIndexAtPos
-//			Get the index of a character at or nearby a certain position on the page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			x			-	X position in PDF "user space".
-//			y			-	Y position in PDF "user space".
-//			xTolerance	-	An x-axis tolerance value for character hit detection, in point unit.
-//			yTolerance	-	A y-axis tolerance value for character hit detection, in point unit.
-// Return Value:
-//			The zero-based index of the character at, or nearby the point (x,y).
-//			If there is no character at or nearby the point, return value will be -1.
-//			If an error occurs, -3 will be returned.
-//
-DLLEXPORT int STDCALL FPDFText_GetCharIndexAtPos(FPDF_TEXTPAGE text_page,
-												 double x, double y, double xTorelance, double yTolerance);
-
-// Function: FPDFText_GetText
-//			Extract unicode text string from the page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			start_index	-	Index for the start characters.
-//			count		-	Number of characters to be extracted.
-//			result		-	A buffer (allocated by application) receiving the extracted unicodes.
-//							The size of the buffer must be able to hold the number of characters plus a terminator.
-// Return Value:
-//			Number of characters written into the result buffer, including the trailing terminator.
-// Comments:
-//			This function ignores characters without unicode information.
-//
-DLLEXPORT int STDCALL FPDFText_GetText(FPDF_TEXTPAGE text_page, int start_index, int count, unsigned short* result);
-
-// Function: FPDFText_CountRects
-//			Count number of rectangular areas occupied by a segment of texts.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			start_index	-	Index for the start characters.
-//			count		-	Number of characters.
-// Return value:
-//			Number of rectangles. Zero for error.
-// Comments:
-//			This function, along with FPDFText_GetRect can be used by applications to detect the position
-//			on the page for a text segment, so proper areas can be highlighted or something.
-//			FPDFTEXT will automatically merge small character boxes into bigger one if those characters
-//			are on the same line and use same font settings.
-//
-DLLEXPORT int STDCALL FPDFText_CountRects(FPDF_TEXTPAGE text_page, int start_index, int count);
-
-// Function: FPDFText_GetRect
-//			Get a rectangular area from the result generated by FPDFText_CountRects.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			rect_index	-	Zero-based index for the rectangle.
-//			left		-	Pointer to a double value receiving the rectangle left boundary.
-//			top			-	Pointer to a double value receiving the rectangle top boundary.
-//			right		-	Pointer to a double value receiving the rectangle right boundary.
-//			bottom		-	Pointer to a double value receiving the rectangle bottom boundary.
-// Return Value:
-//			None.
-//
-DLLEXPORT void STDCALL FPDFText_GetRect(FPDF_TEXTPAGE text_page, int rect_index, double* left, double* top,
-											double* right, double* bottom);
-
-// Function: FPDFText_GetBoundedText
-//			Extract unicode text within a rectangular boundary on the page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			left		-	Left boundary.
-//			top			-	Top boundary.
-//			right		-	Right boundary.
-//			bottom		-	Bottom boundary.
-//			buffer		-	A unicode buffer.
-//			buflen		-	Number of characters (not bytes) for the buffer, excluding an additional terminator.
-// Return Value:
-//			If buffer is NULL or buflen is zero, return number of characters (not bytes) of text present within
-//			the rectangle, excluding a terminating NUL.  Generally you should pass a buffer at least one larger
-//			than this if you want a terminating NUL, which will be provided if space is available.
-//			Otherwise, return number of characters copied into the buffer, including the terminating NUL
-//			when space for it is available.
-// Comment:
-//			If the buffer is too small, as much text as will fit is copied into it.
-//
-DLLEXPORT int STDCALL FPDFText_GetBoundedText(FPDF_TEXTPAGE text_page,double left, double top,
-											  double right, double bottom,unsigned short* buffer,int buflen);
-
-
-// Flags used by FPDFText_FindStart function.
-#define FPDF_MATCHCASE      0x00000001		//If not set, it will not match case by default.
-#define FPDF_MATCHWHOLEWORD 0x00000002		//If not set, it will not match the whole word by default.
-
-// Function: FPDFText_FindStart
-//			Start a search.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-//			findwhat	-	A unicode match pattern.
-//			flags		-	Option flags.
-//			start_index	-	Start from this character. -1 for end of the page.
-// Return Value:
-//			A handle for the search context. FPDFText_FindClose must be called to release this handle.
-//
-DLLEXPORT FPDF_SCHHANDLE STDCALL FPDFText_FindStart(FPDF_TEXTPAGE text_page, FPDF_WIDESTRING findwhat,
-													unsigned long flags, int start_index);
-
-// Function: FPDFText_FindNext
-//			Search in the direction from page start to end.
-// Parameters:
-//			handle		-	A search context handle returned by FPDFText_FindStart.
-// Return Value:
-//			Whether a match is found.
-//
-DLLEXPORT FPDF_BOOL STDCALL FPDFText_FindNext(FPDF_SCHHANDLE handle);
-
-// Function: FPDFText_FindPrev
-//			Search in the direction from page end to start.
-// Parameters:
-//			handle		-	A search context handle returned by FPDFText_FindStart.
-// Return Value:
-//			Whether a match is found.
-//
-DLLEXPORT FPDF_BOOL STDCALL FPDFText_FindPrev(FPDF_SCHHANDLE handle);
-
-// Function: FPDFText_GetSchResultIndex
-//			Get the starting character index of the search result.
-// Parameters:
-//			handle		-	A search context handle returned by FPDFText_FindStart.
-// Return Value:
-//			Index for the starting character.
-//
-DLLEXPORT int STDCALL FPDFText_GetSchResultIndex(FPDF_SCHHANDLE handle);
-
-// Function: FPDFText_GetSchCount
-//			Get the number of matched characters in the search result.
-// Parameters:
-//			handle		-	A search context handle returned by FPDFText_FindStart.
-// Return Value:
-//			Number of matched characters.
-//
-DLLEXPORT int STDCALL FPDFText_GetSchCount(FPDF_SCHHANDLE handle);
-
-// Function: FPDFText_FindClose
-//			Release a search context.
-// Parameters:
-//			handle		-	A search context handle returned by FPDFText_FindStart.
-// Return Value:
-//			None.
-//
-DLLEXPORT void STDCALL FPDFText_FindClose(FPDF_SCHHANDLE handle);
-
-// Function: FPDFLink_LoadWebLinks
-//			Prepare information about weblinks in a page.
-// Parameters:
-//			text_page	-	Handle to a text page information structure. Returned by FPDFText_LoadPage function.
-// Return Value:
-//			A handle to the page's links information structure.
-//			NULL if something goes wrong.
-// Comments:
-//			Weblinks are those links implicitly embedded in PDF pages. PDF also has a type of
-//			annotation called "link", FPDFTEXT doesn't deal with that kind of link.
-//			FPDFTEXT weblink feature is useful for automatically detecting links in the page
-//			contents. For example, things like "http://www.foxitsoftware.com" will be detected,
-//			so applications can allow user to click on those characters to activate the link,
-//			even the PDF doesn't come with link annotations.
-//
-//			FPDFLink_CloseWebLinks must be called to release resources.
-//
-DLLEXPORT FPDF_PAGELINK STDCALL FPDFLink_LoadWebLinks(FPDF_TEXTPAGE text_page);
-
-// Function: FPDFLink_CountWebLinks
-//			Count number of detected web links.
-// Parameters:
-//			link_page	-	Handle returned by FPDFLink_LoadWebLinks.
-// Return Value:
-//			Number of detected web links.
-//
-DLLEXPORT int STDCALL FPDFLink_CountWebLinks(FPDF_PAGELINK link_page);
-
-// Function: FPDFLink_GetURL
-//			Fetch the URL information for a detected web link.
-// Parameters:
-//			link_page	-	Handle returned by FPDFLink_LoadWebLinks.
-//			link_index	-	Zero-based index for the link.
-//			buffer		-	A unicode buffer.
-//			buflen		-	Number of characters (not bytes) for the buffer, including an additional terminator.
-// Return Value:
-//			If buffer is NULL or buflen is zero, return number of characters (not bytes and an additional terminator is also counted) needed,
-//			otherwise, return number of characters copied into the buffer.
-//
-DLLEXPORT int STDCALL FPDFLink_GetURL(FPDF_PAGELINK link_page, int link_index, unsigned short* buffer,int buflen);
-
-// Function: FPDFLink_CountRects
-//			Count number of rectangular areas for the link.
-// Parameters:
-//			link_page	-	Handle returned by FPDFLink_LoadWebLinks.
-//			link_index	-	Zero-based index for the link.
-// Return Value:
-//			Number of rectangular areas for the link.
-//
-DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page, int link_index);
-
-// Function: FPDFLink_GetRect
-//			Fetch the boundaries of a rectangle for a link.
-// Parameters:
-//			link_page	-	Handle returned by FPDFLink_LoadWebLinks.
-//			link_index	-	Zero-based index for the link.
-//			rect_index	-	Zero-based index for a rectangle.
-//			left		-	Pointer to a double value receiving the rectangle left boundary.
-//			top			-	Pointer to a double value receiving the rectangle top boundary.
-//			right		-	Pointer to a double value receiving the rectangle right boundary.
-//			bottom		-	Pointer to a double value receiving the rectangle bottom boundary.
-// Return Value:
-//			None.
-//
-DLLEXPORT void STDCALL FPDFLink_GetRect(FPDF_PAGELINK link_page, int link_index, int rect_index,
-										double* left, double* top,double* right, double* bottom);
-
-// Function: FPDFLink_CloseWebLinks
-//			Release resources used by weblink feature.
-// Parameters:
-//			link_page	-	Handle returned by FPDFLink_LoadWebLinks.
-// Return Value:
-//			None.
-//
-DLLEXPORT void STDCALL FPDFLink_CloseWebLinks(FPDF_PAGELINK link_page);
-
-
-#ifdef __cplusplus
-};
-#endif
-
-#endif//_FPDFTEXT_H_