galkahana
commented
5 years ago If i'm reading the text correctly, then it's reversed. This happens because in PDF texts are written always from left to right. so you can either reverse the text, or place the characters individually from right to left.
MarcoMartins86
So I have used your example on how to write UTF8 strings using glyphs to a PDF page and it seems to work for most of the cases I have tested (chinese, korean, tailandese, japanese, russian, etc) until I tested with arabic strings, not sure if I am missing something but I feed the code with "مرحبا بالعالم"(Hello World) and get "ملاعلاب ابحرم" in the pdf, which, have some bytes switched. Any clue? This is the code I have:
char text[]={'\xd9','\x85','\xd8','\xb1','\xd8','\xad','\xd8','\xa8','\xd8','\xa7','\x20','\xd8','\xa8','\xd8','\xa7','\xd9','\x84','\xd8','\xb9','\xd8','\xa7','\xd9','\x84','\xd9','\x85','\x0'};PDFWriter pdfWriter;pdfWriter.StartPDF("C:\\SimpleTextUsage.PDF", ePDFVersion13);PDFPage* page = new PDFPage();page->SetMediaBox(PDFRectangle(0, 0, 595, 842));PageContentContext* contentContext = pdfWriter.StartPageContentContext(page);PDFUsedFont* font = pdfWriter.GetFontForFile("C:\\windows\\fonts\\unifont-11.0.02.ttf");contentContext->BT();contentContext->k(0, 0, 0, 1);contentContext->Tf(font, 14);contentContext->Tm(1, 0, 0, 1, 10, 100);GlyphUnicodeMappingList glyphsList;font->TranslateStringToGlyphs(text, glyphsList);contentContext->Tj(glyphsList);contentContext->ET();pdfWriter.EndPageContentContext(contentContext);pdfWriter.WritePageAndRelease(page);pdfWriter.EndPDF();