Foxit PDF SDK 5.3

To get text object from a position in a PDF file using Foxit PDF SDK, follow the steps outlined below: Read the PDF file. Load the page and get the page objects in that page. Use FSPDF_PageObjects_GetObjectAtPos to get the text object in a certain position. Note: use page object get rectangle to see the […]

The real size of an image object is inside the dictionary of the pdf file, get the image object and then get the dictionary data for the image object. Here is a simple example: FSCRT_PAGE page = NULL; ret = LoadPage(doc, i, &page); if (FSCRT_ERRCODE_SUCCESS != ret){ printf("Failed to load a given page.n"); return ret; […]

The string retrieved from interface FSPDF_TextPage_GetChars is a UTF-8 string. The interface FSPDF_TextPage_CountChars gets the count of characters in a page. “The length of string” and “the count of characters” are two totally different concepts. The length of a UTF-8 string represents how many bytes the UTF-8 string consumes, rather than how many characters the […]

Figure 1(a) shows the rotation of a text object around the origin of coordinates in Foxit PDF SDK. If we want to rotate a text object around its center as shown in Figure 1(b), a set of complex transformations are needed. The complete transformation process is shown in Figure 2. First, translate the center of […]

To render only part of a PDF page, the key point is to ensure that the rendering page size is larger than the device’s display area. Contents that are not on the display area will not be rendered. Foxit PDF SDK provides the interface FSPDF_Page_GetMatrix to get page’s transformation matrix which can be used for […]

The string retrieved from interface FSPDF_TextPage_GetChars is a UTF-8 string. The interface FSPDF_TextPage_CountChars gets the count of characters in a page. “The length of string” and “the count of characters” are two totally different concepts. The length of a UTF-8 string represents how many bytes the UTF-8 string consumes, rather than how many characters the […]

Before SDK 4.4 version, there exist two bugs when using the interface FSCRT_Bitmap_FillRect to fill a bitmap object with a specified color. FSCRT_Bitmap_FillRect just only receives the color format of ARGB, but it does not judge the format of the bitmap and treats all bitmap formats as ARGB. So, users cannot get the desired filling […]

Foxit PDF SDK provides the interface of FSCRT_Library_AddFontFile or FSCRT_Library_SetFontMapperHandler to display fonts. Following is a sample to show how to use FSCRT_Library_SetFontMapperHandler in C++. static FSCRT_FONTMAPPERHANDLER ExternalFontMapper; static string FallbackFontPath; // MapExternalFont function will be triggered when an external font is needed. static FS_RESULT MapExternalFont(FS_LPVOID clientData, FS_LPCSTR fontName, FS_DWORD fontStyles, FS_INT32 weight, FS_INT32 charset, […]

FSPDF_Doc_InitiateJavaScript is mainly used for initiating javascript, such as a series of javascript functions and global variables that are stated by users. When opening a document, we should call this interface to initiate javascript, which may generate other actions that need support from external application. So the interface FSPDF_Doc_InitiateJavaScript should be called after FSPDF_Doc_SetActionHandler. Otherwise, […]