Make adding text to the document easier

[ipdf/code.git] / src / document.cpp

diff --git a/src/document.cpp b/src/document.cpp
index 8f35644..fe3482f 100644 (file)
--- a/src/document.cpp
+++ b/src/document.cpp
@@ -521,6 +521,53 @@ void Document::ParseSVGPathData(const string & d, const Rect & bounds)
        }
 }
 
        }
 }
 

+void Document::SetFont(const string & font_filename)
+{
+       if (m_font_data != NULL)
+       {
+               free(m_font_data);
+       }
+       
+       FILE *font_file = fopen("DejaVuSansMono.ttf", "rb");
+       fseek(font_file, 0, SEEK_END);
+       size_t font_file_size = ftell(font_file);
+       fseek(font_file, 0, SEEK_SET);
+       m_font_data = (unsigned char*)malloc(font_file_size);
+       size_t read = fread(m_font_data, 1, font_file_size, font_file);
+       if (read != font_file_size)
+       {
+               Fatal("Failed to read font data from \"%s\" - Read %u bytes expected %u - %s", font_filename.c_str(), read, font_file_size, strerror(errno));
+       }
+       fclose(font_file);
+       stbtt_InitFont(&m_font, m_font_data, 0);
+}
+
+void Document::AddText(const string & text, Real scale, Real x, Real y)
+{
+       if (m_font_data == NULL)
+       {
+               Warn("No font loaded");
+               return;
+       }
+               
+       float font_scale = stbtt_ScaleForPixelHeight(&m_font, scale);
+       Real x0(x);
+       //Real y0(y);
+       for (unsigned i = 0; i < text.size(); ++i)
+       {
+               if (text[i] == '\n')
+               {
+                       y += 0.5*scale;
+                       x = x0;
+               }
+               if (!isprint(text[i]))
+                       continue;
+                       
+               AddFontGlyphAtPoint(&m_font, text[i], font_scale, x, y);
+               x += 0.5*scale;
+       }
+}
+

 void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real scale, Real x, Real y)
 {
        int glyph_index = stbtt_FindGlyphIndex(font, character);
 void Document::AddFontGlyphAtPoint(stbtt_fontinfo *font, int character, Real scale, Real x, Real y)
 {
        int glyph_index = stbtt_FindGlyphIndex(font, character);