fallback mode

pdf2htmlEX.1.in

@@ -87,6 +87,10 @@ Specify the filename of the generated outline file, if not embedded.
 
 If it's empty, the file name will be determined automatically.
 
+.TP
+.B --fallback <0|1> (Deafult: 0)
+Output in fallback mode, for better accuracy and browser compatibility, but the size becomes larger.
+
 .TP
 .B --process-nontext <0|1> (Default: 1)
 Whether to process non-text objects (as images)

share/base.css.in

@@ -164,11 +164,12 @@ span { /* text blocks within a line */
   color:transparent;
   z-index:-1;
 }
+/* selection background should not be opaque, for fallback mode */
 ::selection{
-  background: rgba(127,255,255,1);
+  background: rgba(127,255,255,0.4);
 }
 ::-moz-selection{
-  background: rgba(127,255,255,1);
+  background: rgba(127,255,255,0.4);
 }
 .@CSS_PAGE_DATA_CN@ { /* info for Javascript */
   display:none;

src/BackgroundRenderer/SplashBackgroundRenderer.cc

@@ -20,17 +20,19 @@ void SplashBackgroundRenderer::drawChar(GfxState *state, double x, double y,
   CharCode code, int nBytes, Unicode *u, int uLen)
 {
     // draw characters as image when
-    // - there is special filling method
+    // - in fallback mode
+    // - OR there is special filling method
     // - OR using a writing mode font
     // - OR using a Type 3 font
-    if(( (state->getFont()) 
+    if((param->fallback)
+       || ( (state->getFont()) 
             && ( (state->getFont()->getWMode())
                  || (state->getFont()->getType() == fontType3)
                )
           )
       )
     {
-        SplashOutputDev::drawChar(state,x,y,dx,dy,originX,originY,code, nBytes, u, uLen);
+        SplashOutputDev::drawChar(state,x,y,dx,dy,originX,originY,code,nBytes,u,uLen);
     }
 }
 
@@ -42,7 +44,7 @@ void SplashBackgroundRenderer::render_page(PDFDoc * doc, int pageno, const strin
 {
     doc->displayPage(this, pageno, param->h_dpi, param->v_dpi,
             0, 
-            (param->use_cropbox == 0), 
+            (!(param->use_cropbox)),
             false, false,
             nullptr, nullptr, &annot_cb, nullptr);
 

src/HTMLRenderer/general.cc

@@ -120,7 +120,7 @@ void HTMLRenderer::process(PDFDoc *doc)
         doc->displayPage(this, i, 
                 text_zoom_factor() * DEFAULT_DPI, text_zoom_factor() * DEFAULT_DPI,
                 0, 
-                (param->use_cropbox == 0), 
+                (!(param->use_cropbox)),
                 false, false,
                 nullptr, nullptr, nullptr, nullptr);
 

src/HTMLRenderer/state.cc

@@ -346,7 +346,7 @@ void HTMLRenderer::check_state_change(GfxState * state)
     }
 
     // fill color
-    if(all_changed || fill_color_changed)
+    if((!(param->fallback)) && (all_changed || fill_color_changed))
     {
         // * PDF Spec. Table 106 –  Text rendering modes
         static const char FILL[8]   = { true, false, true, false, true, false, true, false };
@@ -369,7 +369,7 @@ void HTMLRenderer::check_state_change(GfxState * state)
     }
 
     // stroke color
-    if(all_changed || stroke_color_changed)
+    if((!(param->fallback)) && (all_changed || stroke_color_changed))
     {
         // * PDF Spec. Table 106 –  Text rendering modes
         static const char STROKE[8] = { false, true, true, false, false, true, true, false };

src/Param.h

@@ -32,6 +32,7 @@ struct Param
     std::string outline_filename;
     int process_nontext;
     int process_outline;
+    int fallback;
     
     // fonts
     int embed_base_font;

src/pdf2htmlEX.cc

@@ -75,6 +75,7 @@ void parse_options (int argc, char **argv)
         .add("outline-filename", &param.outline_filename, "", "filename of the generated outline file")
         .add("process-nontext", &param.process_nontext, 1, "render graphics in addition to text")
         .add("process-outline", &param.process_outline, 1, "show outline in HTML")
+        .add("fallback", &param.fallback, 0, "output in fallback mode")
         
         // fonts
         .add("embed-base-font", &param.embed_base_font, 0, "embed local match for standard 14 fonts")