working but ugly code

CMakeLists.txt

@@ -127,6 +127,7 @@ set(PDF2HTMLEX_SRC ${PDF2HTMLEX_SRC}
     src/HTMLRenderer/general.cc
     src/HTMLRenderer/image.cc
     src/HTMLRenderer/font.cc
+    src/HTMLRenderer/form.cc
     src/HTMLRenderer/link.cc
     src/HTMLRenderer/outline.cc
     src/HTMLRenderer/state.cc

src/HTMLRenderer/HTMLRenderer.h

@@ -20,6 +20,10 @@
 #include <GfxFont.h>
 #include <Annot.h>
 
+// for form.cc
+#include <Page.h>
+#include <Form.h>
+
 #include "pdf2htmlEX-config.h"
 
 #include "Param.h"
@@ -165,6 +169,8 @@ protected:
     void process_outline(void);
     void process_outline_items(GooList * items);
 
+    void process_form(std::ostream & out);
+    
     void set_stream_flags (std::ostream & out);
 
     void dump_css(void);

src/HTMLRenderer/form.cc

@@ -0,0 +1,103 @@
+/*
+ * form.cc
+ *
+ * Handling Forms
+ *
+ * by Simon Chenard
+ * 2014.07.25
+ */
+
+#include <iostream>
+#include <sstream>
+#include <string>
+
+#include "HTMLRenderer.h"
+#include "util/namespace.h"
+#include "util/misc.h"
+
+namespace pdf2htmlEX {
+   
+using std::ostream;
+using std::cerr;
+
+void HTMLRenderer::process_form(ostream & out)
+{
+    FormPageWidgets * widgets = cur_catalog->getPage(pageNum)->getFormWidgets();
+    int num = widgets->getNumWidgets();
+    std::ostringstream derp;
+
+    for(int i = 0; i < num; i++)
+    {
+        FormWidget * w = widgets->getWidget(i);
+        double x1, y1, x2, y2;
+        int width, height, font_size;
+
+        w->getRect(&x1, &y1, &x2, &y2);
+        x1 = x1 * param.zoom;
+        x2 = x2 * param.zoom;
+        y1 = y1 * param.zoom;
+        y2 = y2 * param.zoom;
+
+        width = x2 - x1;
+        height = y2 - y1;
+        
+        if(w->getType() == formText)
+        {
+            font_size = height / 2;
+
+            out << "<input id=\"text-" << std::to_string(pageNum) << "-" 
+                << std::to_string(i) << "\" type=\"text\" value=\"\""
+                << " style=\"position: absolute; left: " << std::to_string(x1) << 
+                "px; bottom: " << std::to_string(y1) << "px;" <<
+                "width: " << std::to_string(width) << "px; height: " << std::to_string(height) << 
+                "px; line-height: " << std::to_string(height) << "px; font-size: " 
+                << std::to_string(font_size) << "px;\" class=\"text_input\" />" << endl;
+        }
+
+        if(w->getType() == formButton)
+        {
+            out << "<div id=\"cb-" << std::to_string(pageNum) << "-" 
+                << std::to_string(i) << "\"" 
+                << " style=\"opacity:0.0; position: absolute; left: " << std::to_string(x1) << 
+                "px; bottom: " << std::to_string(y1) << "px;" <<
+                "width: " << std::to_string(width) << "px; height: " << std::to_string(height) << 
+                "px;  font-size: 20px; \" class=\"checkbox-" <<
+                std::to_string(pageNum) << "\">X</div>" << endl;
+
+        }
+    }
+
+    //output, at the end, the necessary css
+    if(num > 0) {
+        //this is usable by the whole document and as such should be in dump_css
+        out << "<style>" <<
+            ".text_input {" <<
+            "border: none; " << 
+            "background-color: rgba(255, 255, 255, 0.0);" <<
+            "}" << endl <<
+            ".checkbox-" << std::to_string(pageNum) << ":hover {" <<
+            "cursor: pointer;" <<
+            "}" <<
+            "</style>" << endl;
+        
+        //this is currently page specific
+        out << "<script type=\"text/javascript\">" << endl << 
+            "var checkboxes = document.getElementsByClassName(\"checkbox-" <<
+            std::to_string(pageNum) << "\");" << endl <<
+            "var c = checkboxes.item(0);" << endl <<
+            "console.log(c);" << endl <<
+            "for(var i = 0; i < checkboxes.length; i++) {" << endl <<
+            "var c = checkboxes[i];" << endl <<
+            "c.addEventListener('click', function() {" << endl <<
+            "if(this.style.opacity == 1)" << endl << 
+            "this.style.opacity = 0;" << endl <<
+            "else" << endl << 
+            "this.style.opacity = 1;" << endl <<
+            "});" << endl <<
+            "}" << endl <<
+            "</script>" << endl;
+        
+    }
+}
+
+}

src/HTMLRenderer/general.cc

@@ -252,6 +252,10 @@ void HTMLRenderer::endPage() {
     html_text_page.dump_css(f_css.fs);
     html_text_page.clear();
 
+    // process form
+    if(param.include_forms)
+        process_form(*f_curpage);
+    
     // process links before the page is closed
     cur_doc->processLinks(this, pageNum);
 

src/Param.h

@@ -62,6 +62,9 @@ struct Param
     int tounicode;
     int optimize_text;
 
+    // adobe form
+    int include_forms;
+
     // background image
     std::string bg_format;
     int svg_node_count_limit;

src/pdf2htmlEX.cc

@@ -189,6 +189,9 @@ void parse_options (int argc, char **argv)
         .add("optimize-text", &param.optimize_text, 0, "try to reduce the number of HTML elements used for text")
         .add("correct-text-visibility", &param.correct_text_visibility, 0, "try to detect texts covered by other graphics and properly arrange them")
 
+        // adobe forms
+        .add("include-forms", &param.include_forms, 0, "include text fields and such")
+
         // background image
         .add("bg-format", &param.bg_format, "png", "specify background image format")
         .add("svg-node-count-limit", &param.svg_node_count_limit, -1, "if node count in a svg background image exceeds this limit,"