diff options
Diffstat (limited to 'public/fpdf_text.h')
| -rw-r--r-- | public/fpdf_text.h | 265 |
1 files changed, 181 insertions, 84 deletions
diff --git a/public/fpdf_text.h b/public/fpdf_text.h index 3c0afd2498..3046bb0f85 100644 --- a/public/fpdf_text.h +++ b/public/fpdf_text.h @@ -17,21 +17,26 @@ extern "C" { // 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). +// 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. +// Application must call FPDFText_ClosePage to release the text page +// information. // Notes: -// The method can not support to load out FPDF_TEXTPAGE for the document consists of dynamic fields. +// The method can not support to load out FPDF_TEXTPAGE for the +// document consists of dynamic fields. // DLLEXPORT FPDF_TEXTPAGE STDCALL FPDFText_LoadPage(FPDF_PAGE page); // Function: FPDFText_ClosePage -// Release all resources allocated for a text page information structure. +// 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. +// text_page - Handle to a text page information structure. +// Returned by FPDFText_LoadPage function. // Return Value: // None. // @@ -40,13 +45,17 @@ 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. +// 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. +// 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 +// 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); @@ -54,149 +63,213 @@ 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. +// 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, +// 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); +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. +// 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). +// 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); +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. +// 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. +// 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); +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. +// 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. +// 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. +// 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 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); + 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. +// 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. +// 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. +// 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); +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. +// 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 +// 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); +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. +// 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. +// 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. +// 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); +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. +// 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. +// 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 +// 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. +// 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); - +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. +#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. +// 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. +// 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); +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. +// handle - A search context handle returned by +// FPDFText_FindStart. // Return Value: // Whether a match is found. // @@ -205,7 +278,8 @@ 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. +// handle - A search context handle returned by +// FPDFText_FindStart. // Return Value: // Whether a match is found. // @@ -214,7 +288,8 @@ 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. +// handle - A search context handle returned by +// FPDFText_FindStart. // Return Value: // Index for the starting character. // @@ -223,7 +298,8 @@ 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. +// handle - A search context handle returned by +// FPDFText_FindStart. // Return Value: // Number of matched characters. // @@ -232,7 +308,8 @@ 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. +// handle - A search context handle returned by +// FPDFText_FindStart. // Return Value: // None. // @@ -241,16 +318,22 @@ 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. +// 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, +// 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. @@ -272,12 +355,17 @@ DLLEXPORT int STDCALL FPDFLink_CountWebLinks(FPDF_PAGELINK link_page); // 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. +// 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, +// 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); +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. @@ -287,7 +375,8 @@ DLLEXPORT int STDCALL FPDFLink_GetURL(FPDF_PAGELINK link_page, int link_index, u // Return Value: // Number of rectangular areas for the link. // -DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page, int link_index); +DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page, + int link_index); // Function: FPDFLink_GetRect // Fetch the boundaries of a rectangle for a link. @@ -295,15 +384,24 @@ DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page, int link_inde // 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. +// 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); +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. @@ -314,7 +412,6 @@ DLLEXPORT void STDCALL FPDFLink_GetRect(FPDF_PAGELINK link_page, int link_index, // DLLEXPORT void STDCALL FPDFLink_CloseWebLinks(FPDF_PAGELINK link_page); - #ifdef __cplusplus } #endif |