From 7ee0cc011106b420279c36a1fdf4cdffc759c3ef Mon Sep 17 00:00:00 2001
From: Lu Wang <coolwanglu@gmail.com>
Date: Sun, 16 Sep 2012 15:53:41 +0800
Subject: [PATCH] add class for height

---
 src/HTMLRenderer/LineBuffer.cc |  9 +++++----
 src/HTMLRenderer/export.cc     |  5 +++++
 src/HTMLRenderer/install.cc    | 14 ++++++++++++++
 src/include/HTMLRenderer.h     |  5 ++++-
 4 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/HTMLRenderer/LineBuffer.cc b/src/HTMLRenderer/LineBuffer.cc
index 3617fd1..6ad6eb3 100644
--- a/src/HTMLRenderer/LineBuffer.cc
+++ b/src/HTMLRenderer/LineBuffer.cc
@@ -78,13 +78,14 @@ void HTMLRenderer::LineBuffer::flush(void)
         max_ascent = max(max_ascent, s.ascent * s.draw_font_size);
     }
 
-    // TODO: class for height ?
     ostream & out = renderer->html_fout;
     out << "<div style=\"left:" 
         << _round(x) << "px;bottom:" 
-        << _round(y) << "px;height:" 
-        << _round(max_ascent) << "px;\" class=\"l t" 
-        << tm_id << "\">";
+        << _round(y) << "px;"
+        << "\""
+        << " class=\"l t" << tm_id 
+        << " h" << renderer->install_height(max_ascent)
+        << "\">";
 
     auto cur_state_iter = states.begin();
     auto cur_offset_iter = offsets.begin();
diff --git a/src/HTMLRenderer/export.cc b/src/HTMLRenderer/export.cc
index ce1db43..4b8193f 100644
--- a/src/HTMLRenderer/export.cc
+++ b/src/HTMLRenderer/export.cc
@@ -135,4 +135,9 @@ void HTMLRenderer::export_rise (long long rise_id, double rise)
     css_fout << ".r" << rise_id << "{top:" << _round(-rise) << "px;}" << endl;
 }
 
+void HTMLRenderer::export_height (long long height_id, double height) 
+{
+    css_fout << ".h" << height_id << "{height:" << _round(height) << "px;}" << endl;
+}
+
 }
diff --git a/src/HTMLRenderer/install.cc b/src/HTMLRenderer/install.cc
index cb3e612..81de4bd 100644
--- a/src/HTMLRenderer/install.cc
+++ b/src/HTMLRenderer/install.cc
@@ -293,4 +293,18 @@ long long HTMLRenderer::install_rise(double rise)
     return new_rise_id;
 }
 
+long long HTMLRenderer::install_height(double height)
+{
+    auto iter = height_map.lower_bound(height - EPS);
+    if((iter != height_map.end()) && (abs(iter->first - height) < EPS))
+    {
+        return iter->second;
+    }
+
+    long long new_height_id = height_map.size();
+    height_map.insert(make_pair(height, new_height_id));
+    export_height(new_height_id, height);
+    return new_height_id;
+}
+
 } // namespace pdf2htmlEX
diff --git a/src/include/HTMLRenderer.h b/src/include/HTMLRenderer.h
index dc76479..5625a9e 100644
--- a/src/include/HTMLRenderer.h
+++ b/src/include/HTMLRenderer.h
@@ -51,6 +51,7 @@
  * c<hex> - Color
  * _<hex> - white space
  * r<hex> - Rise
+ * h<hex> - Height
  *
  */
 
@@ -148,6 +149,7 @@ class HTMLRenderer : public OutputDev
         long long install_color(const GfxRGB * rgb);
         long long install_whitespace(double ws_width, double & actual_width);
         long long install_rise(double rise);
+        long long install_height(double height);
 
         ////////////////////////////////////////////////////
         // export css styles
@@ -167,7 +169,7 @@ class HTMLRenderer : public OutputDev
         void export_color(long long color_id, const GfxRGB * rgb);
         void export_whitespace(long long ws_id, double ws_width);
         void export_rise(long long rise_id, double rise);
-
+        void export_height(long long height_id, double height);
 
         // depending on single-html, to embed the content or add a link to it
         // "type": specify the file type, usually it's the suffix, in which case this parameter could be ""
@@ -360,6 +362,7 @@ class HTMLRenderer : public OutputDev
         std::unordered_map<GfxRGB, long long, GfxRGB_hash, GfxRGB_equal> color_map; 
         std::map<double, long long> whitespace_map;
         std::map<double, long long> rise_map;
+        std::map<double, long long> height_map;
 
         int image_count;