public static string FPDFText_GetText(FPDF_TEXTPAGE text_page, int start_index, int count)
{
var buffer = new byte[2 * (count + 1)];
int length = FPDFText_GetText(text_page, start_index, count, ref buffer[0]);
return(Encoding.Unicode.GetString(buffer, 0, (length - 1) * 2));
}
/// <summary>
/// Experimental API. Get character rotation angle.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <returns>On success, return the angle value in radian. Value will always be greater or equal to 0.
/// If |text_page| is invalid, or if |index| is out of bounds, then return -1.</returns>
/// <remarks>
/// FPDF_EXPORT float FPDF_CALLCONV FPDFText_GetCharAngle(FPDF_TEXTPAGE text_page, int index);.
/// </remarks>
public float FPDFText_GetCharAngle(FPDF_TEXTPAGE text_page, int index)
{
lock (_syncObject)
{
return(FPDFText_GetCharAngleStatic(text_page, index));
}
}
/// <summary>
/// Get number of characters in a page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <returns>Number of characters in the page. Return -1 for error.
/// Generated characters, like additional space characters, new line characters, are also counted.</returns>
/// <remarks>
/// 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.
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_CountChars(FPDF_TEXTPAGE text_page);.
/// </remarks>
public int FPDFText_CountChars(FPDF_TEXTPAGE text_page)
{
lock (_syncObject)
{
return(FPDFText_CountCharsStatic(text_page));
}
}
/// <summary>
/// Get bounding box of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="left">Pointer to a double number receiving left position of the character box.</param>
/// <param name="right">Pointer to a double number receiving right position of the character box.</param>
/// <param name="bottom">Pointer to a double number receiving bottom position of the character box.</param>
/// <param name="top">Pointer to a double number receiving top position of the character box.</param>
/// <returns>On success, return TRUE and fill in |left|, |right|, |bottom|, and |top|.
/// If |text_page| is invalid, or if |index| is out of bounds, then return FALSE, and the out parameters remain unmodified.</returns>
/// <remarks>
/// All positions are measured in PDF "user space".
/// FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetCharBox(FPDF_TEXTPAGE text_page, int index, double* left, double* right, double* bottom, double* top);.
/// </remarks>
public bool FPDFText_GetCharBox(FPDF_TEXTPAGE text_page, int index, ref double left, ref double right, ref double bottom, ref double top)
{
lock (_syncObject)
{
return(FPDFText_GetCharBoxStatic(text_page, index, ref left, ref right, ref bottom, ref top));
}
}
/// <summary>
/// Start a search.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="findwhat">A unicode match pattern.</param>
/// <param name="flags">Option flags.</param>
/// <param name="start_index">Start from this character. -1 for end of the page.</param>
/// <returns>A handle for the search context. FPDFText_FindClose must be called to release this handle.</returns>
/// <remarks>
/// FPDF_EXPORT FPDF_SCHHANDLE FPDF_CALLCONV FPDFText_FindStart(FPDF_TEXTPAGE text_page, FPDF_WIDESTRING findwhat, unsigned long flags, int start_index);.
/// </remarks>
public FPDF_SCHHANDLE FPDFText_FindStart(FPDF_TEXTPAGE text_page, IntPtr findwhat, FPDF_FIND_FLAGS flags, int start_index)
{
lock (_syncObject)
{
return(FPDFText_FindStartStatic(text_page, findwhat, flags, start_index));
}
}
/// <summary>
/// Experimental API. Get text rendering mode of character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <returns>On success, return the render mode value. A valid value is of type FPDF_TEXT_RENDERMODE.
/// If |text_page| is invalid, if |index| is out of bounds, or if the text object is undefined, then return FPDF_TEXTRENDERMODE_UNKNOWN.</returns>
/// <remarks>
/// FPDF_EXPORT FPDF_TEXT_RENDERMODE FPDF_CALLCONV FPDFText_GetTextRenderMode(FPDF_TEXTPAGE text_page, int index);.
/// </remarks>
public FPDF_TEXT_RENDERMODE FPDFText_GetTextRenderMode(FPDF_TEXTPAGE text_page, int index)
{
lock (_syncObject)
{
return(FPDFText_GetTextRenderModeStatic(text_page, index));
}
}
/// <summary>
/// Experimental API. Get the fill color of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="r">Pointer to an unsigned int number receiving the red value of the fill color.</param>
/// <param name="g">Pointer to an unsigned int number receiving the green value of the fill color.</param>
/// <param name="b">Pointer to an unsigned int number receiving the blue value of the fill color.</param>
/// <param name="a">Pointer to an unsigned int number receiving the alpha value of the fill color.</param>
/// <returns>Whether the call succeeded. If false, |R|, |G|, |B| and |A| are unchanged.</returns>
/// <remarks>
/// FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetFillColor(FPDF_TEXTPAGE text_page, int index, unsigned int* R, unsigned int* G, unsigned int* B, unsigned int* A);.
/// </remarks>
public bool FPDFText_GetFillColor(FPDF_TEXTPAGE text_page, int index, ref uint r, ref uint g, ref uint b, ref uint a)
{
lock (_syncObject)
{
return(FPDFText_GetFillColorStatic(text_page, index, ref r, ref g, ref b, ref a));
}
}
/// <summary>
/// Experimental API. Get the font weight of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <returns>On success, return the font weight of the particular character.
/// If |text_page| is invalid, if |index| is out of bounds, or if the character's text object is undefined, return -1.</returns>
/// <remarks>
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetFontWeight(FPDF_TEXTPAGE text_page, int index);.
/// </remarks>
public int FPDFText_GetFontWeight(FPDF_TEXTPAGE text_page, int index)
{
lock (_syncObject)
{
return(FPDFText_GetFontWeightStatic(text_page, index));
}
}
/// <summary>
/// Experimental API. Get the font name and flags of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="buffer">A buffer receiving the font name.</param>
/// <param name="buflen">The length of |buffer| in bytes.</param>
/// <param name="flags">Optional pointer to an int receiving the font flags.
/// These flags should be interpreted per PDF spec 1.7 Section 5.7.1 Font Descriptor Flags.</param>
/// <returns>On success, return the length of the font name, including the trailing NUL character, in bytes.
/// If this length is less than or equal to |length|, |buffer| is set to the font name, |flags| is set to the font flags.
/// |buffer| is in UTF-8 encoding. Return 0 on failure.</returns>
/// <remarks>
/// FPDF_EXPORT unsigned long FPDF_CALLCONV FPDFText_GetFontInfo(FPDF_TEXTPAGE text_page, int index, void* buffer, unsigned long buflen, int* flags);.
/// </remarks>
public ulong FPDFText_GetFontInfo(FPDF_TEXTPAGE text_page, int index, IntPtr buffer, ulong buflen, ref int flags)
{
lock (_syncObject)
{
return(FPDFText_GetFontInfoStatic(text_page, index, buffer, buflen, ref flags));
}
}
/// <summary>
/// Get the font size of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <returns>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").</returns>
/// <remarks>
/// FPDF_EXPORT double FPDF_CALLCONV FPDFText_GetFontSize(FPDF_TEXTPAGE text_page, int index);.
/// </remarks>
public double FPDFText_GetFontSize(FPDF_TEXTPAGE text_page, int index)
{
lock (_syncObject)
{
return(FPDFText_GetFontSizeStatic(text_page, index));
}
}
/// <summary>
/// Experimental API. Get the stroke color of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="r">Pointer to an unsigned int number receiving the red value of the stroke color.</param>
/// <param name="g">Pointer to an unsigned int number receiving the green value of the stroke color.</param>
/// <param name="b">Pointer to an unsigned int number receiving the blue value of the stroke color.</param>
/// <param name="a">Pointer to an unsigned int number receiving the alpha value of the stroke color.</param>
/// <returns>Whether the call succeeded. If false, |R|, |G|, |B| and |A| are unchanged.</returns>
/// <remarks>FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetStrokeColor(FPDF_TEXTPAGE text_page, int index, unsigned int* R, unsigned int* G, unsigned int* B, unsigned int* A);.</remarks>
public bool FPDFText_GetStrokeColor(FPDF_TEXTPAGE text_page, int index, ref ulong r, ref ulong g, ref ulong b, ref ulong a)
{
lock (_syncObject)
{
return(FPDFText_GetStrokeColorStatic(text_page, index, ref r, ref g, ref b, ref a));
}
}
/// <summary>
/// Prepare information about weblinks in a page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <returns>A handle to the page's links information structure, or NULL if something goes wrong.</returns>
/// <remarks>
/// FPDFLink_CloseWebLinks must be called to release resources.
/// 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 "https://www.example.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.
/// FPDF_EXPORT FPDF_PAGELINK FPDF_CALLCONV FPDFLink_LoadWebLinks(FPDF_TEXTPAGE text_page);.
/// </remarks>
public FPDF_PAGELINK FPDFLink_LoadWebLinks(FPDF_TEXTPAGE text_page)
{
lock (_syncObject)
{
return(FPDFLink_LoadWebLinksStatic(text_page));
}
}
/// <summary>
/// Get a rectangular area from the result generated by FPDFText_CountRects.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="rect_index">Zero-based index for the rectangle.</param>
/// <param name="left">Pointer to a double value receiving the rectangle left boundary.</param>
/// <param name="top">Pointer to a double value receiving the rectangle top boundary.</param>
/// <param name="right">Pointer to a double value receiving the rectangle right boundary.</param>
/// <param name="bottom">Pointer to a double value receiving the rectangle bottom boundary.</param>
/// <returns>On success, return TRUE and fill in |left|, |top|, |right|, and |bottom|.
/// If |text_page| is invalid then return FALSE, and the out parameters remain unmodified.
/// If |text_page| is valid but |rect_index| is out of bounds, then return FALSE and set the out parameters to 0.</returns>
/// <remarks>FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetRect(FPDF_TEXTPAGE text_page, int rect_index, double* left, double* top, double* right, double* bottom);.
/// </remarks>
public bool FPDFText_GetRect(FPDF_TEXTPAGE text_page, int rect_index, ref double left, ref double top, ref double right, ref double bottom)
{
lock (_syncObject)
{
return(FPDFText_GetRectStatic(text_page, rect_index, ref left, ref top, ref right, ref bottom));
}
}
/// <summary>
/// Experimental API. Get a "loose" bounding box of a particular character, i.e.,
/// covering the entire glyph bounds, without taking the actual glyph shape into account.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="rect">Pointer to a FS_RECTF receiving the character box.</param>
/// <returns>On success, return TRUE and fill in |rect|. If |text_page| is invalid, or if |index| is out of bounds,
/// then return FALSE, and the |rect| out parameter remains unmodified.</returns>
/// <remarks>
/// All positions are measured in PDF "user space".
/// FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetLooseCharBox(FPDF_TEXTPAGE text_page, int index, FS_RECTF* rect);.
/// </remarks>
public bool FPDFText_GetLooseCharBox(FPDF_TEXTPAGE text_page, int index, ref FS_RECTF rect)
{
lock (_syncObject)
{
return(FPDFText_GetLooseCharBoxStatic(text_page, index, ref rect));
}
}
/// <summary>
/// Count number of rectangular areas occupied by a segment of texts.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="start_index">Index for the start characters.</param>
/// <param name="count">Number of characters.</param>
/// <returns>Number of rectangles. Zero for error.</returns>
/// <remarks>
/// 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. FPDFTEXT will automatically merge small character boxes into bigger one if those characters
/// are on the same line and use same font settings.
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_CountRects(FPDF_TEXTPAGE text_page, int start_index, int count);.
/// </remarks>
public int FPDFText_CountRects(FPDF_TEXTPAGE text_page, int start_index, int count)
{
lock (_syncObject)
{
return(FPDFText_CountRectsStatic(text_page, start_index, count));
}
}
/// <summary>
/// Release all resources allocated for a text page information structure.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <remarks>
/// FPDF_EXPORT void FPDF_CALLCONV FPDFText_ClosePage(FPDF_TEXTPAGE text_page);.
/// </remarks>
public void FPDFText_ClosePage(FPDF_TEXTPAGE text_page)
{
lock (_syncObject)
{
FPDFText_ClosePageStatic(text_page);
}
}
/// <summary>
/// Get the index of a character at or nearby a certain position on the page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="x">X position in PDF "user space".</param>
/// <param name="y">Y position in PDF "user space".</param>
/// <param name="xTolerance">An x-axis tolerance value for character hit detection, in point units.</param>
/// <param name="yTolerance">A y-axis tolerance value for character hit detection, in point units.</param>
/// <returns>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.</returns>
/// <remarks>
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetCharIndexAtPos(FPDF_TEXTPAGE text_page, double x, double y, double xTolerance, double yTolerance);.
/// </remarks>
public int FPDFText_GetCharIndexAtPos(FPDF_TEXTPAGE text_page, double x, double y, double xTolerance, double yTolerance)
{
lock (_syncObject)
{
return(FPDFText_GetCharIndexAtPosStatic(text_page, x, y, xTolerance, yTolerance));
}
}
/// <summary>
/// Extract unicode text string from the page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="start_index">Index for the start characters.</param>
/// <param name="count">Number of characters to be extracted.</param>
/// <param name="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.</param>
/// <returns>Number of characters written into the result buffer, including the trailing terminator.</returns>
/// <remarks>
/// This function ignores characters without unicode information.
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetText(FPDF_TEXTPAGE text_page, int start_index, int count, unsigned short* result);.
/// </remarks>
public int FPDFText_GetText(FPDF_TEXTPAGE text_page, int start_index, int count, IntPtr result)
{
lock (_syncObject)
{
return(FPDFText_GetTextStatic(text_page, start_index, count, result));
}
}
/// <summary>
/// Get origin of a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="x">Pointer to a double number receiving x coordinate of the character origin.</param>
/// <param name="y">Pointer to a double number receiving y coordinate of the character origin.</param>
/// <returns>Whether the call succeeded. If false, x and y are unchanged.</returns>
/// <remarks>
/// All positions are measured in PDF "user space".
/// FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetCharOrigin(FPDF_TEXTPAGE text_page, int index, double* x, double* y);.
/// </remarks>
public bool FPDFText_GetCharOrigin(FPDF_TEXTPAGE text_page, int index, ref double x, ref double y)
{
lock (_syncObject)
{
return(FPDFText_GetCharOriginStatic(text_page, index, ref x, ref y));
}
}
/// <summary>
/// Experimental API. Get the effective transformation matrix for a particular character.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage().</param>
/// <param name="index">Zero-based index of the character.</param>
/// <param name="matrix">Pointer to a FS_MATRIX receiving the transformation matrix.</param>
/// <returns>On success, return TRUE and fill in |matrix|. If |text_page| is invalid, or if |index| is out of bounds,
/// or if |matrix| is NULL, then return FALSE, and |matrix| remains unmodified.</returns>
/// <remarks>
/// FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFText_GetMatrix(FPDF_TEXTPAGE text_page, int index, FS_MATRIX* matrix);.
/// </remarks>
public bool FPDFText_GetMatrix(FPDF_TEXTPAGE text_page, int index, ref FS_MATRIX matrix)
{
lock (_syncObject)
{
return(FPDFText_GetMatrixStatic(text_page, index, ref matrix));
}
}
/// <summary>
/// Get Unicode of a character in a page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="index">Zero-based index of the character.</param>
/// <returns>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.</returns>
/// <remarks>
/// FPDF_EXPORT unsigned int FPDF_CALLCONV FPDFText_GetUnicode(FPDF_TEXTPAGE text_page, int index);.
/// </remarks>
public int FPDFText_GetUnicode(FPDF_TEXTPAGE text_page, int index)
{
lock (_syncObject)
{
return(FPDFText_GetUnicodeStatic(text_page, index));
}
}
/// <summary>
/// Extract unicode text within a rectangular boundary on the page.
/// </summary>
/// <param name="text_page">Handle to a text page information structure. Returned by FPDFText_LoadPage function.</param>
/// <param name="left">Left boundary.</param>
/// <param name="top">Top boundary.</param>
/// <param name="right">Right boundary.</param>
/// <param name="bottom">Bottom boundary.</param>
/// <param name="buffer">A unicode buffer.</param>
/// <param name="buflen">Number of characters (not bytes) for the buffer, excluding an additional terminator.</param>
/// <returns>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.</returns>
/// <remarks>
/// FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetBoundedText(FPDF_TEXTPAGE text_page, double left, double top, double right, double bottom, unsigned short* buffer, int buflen);.
/// </remarks>
public int FPDFText_GetBoundedText(FPDF_TEXTPAGE text_page, double left, double top, double right, double bottom, IntPtr buffer, int buflen)
{
lock (_syncObject)
{
return(FPDFText_GetBoundedTextStatic(text_page, left, top, right, bottom, buffer, buflen));
}
}
public static string FPDFTextObj_GetTextAnsi(FPDF_PAGEOBJECT page_object, FPDF_TEXTPAGE text_page)
{
return(GetAsciiString((ref byte buffer, int length) => (int)FPDFTextObj_GetText(page_object, text_page, ref buffer, length)));
}
public void FPDF_TEXTPAGE_Constructor_Call2_Success()
{
var h = new FPDF_TEXTPAGE(new IntPtr(1));
Assert.IsTrue(h.IsValid);
}
public static string FPDFText_GetBoundedText(FPDF_TEXTPAGE text_page, double left, double top, double right, double bottom) => GetUtf16String((ref byte buffer, int length) => FPDFText_GetBoundedText(text_page, left, top, right, bottom, ref buffer, length), sizeof(ushort), false);
public static string FPDFTextObj_GetTextUnicode(FPDF_PAGEOBJECT page_object, FPDF_TEXTPAGE text_page)
{
return(GetUtf16String((ref byte buffer, int length) => (int)FPDFTextObj_GetText(page_object, text_page, ref buffer, length), sizeof(ushort), false));
}
public void FPDF_TEXTPAGE_Constructor_Call1_Success()
{
var h = new FPDF_TEXTPAGE();
Assert.IsFalse(h.IsValid);
}
