Diff: fonts/EAFont.cpp

Revision:

7:6cf21b018420

diff -r 4fe6f365cbeb -r 6cf21b018420 fonts/EAFont.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fonts/EAFont.cpp	Mon Nov 01 13:07:40 2010 +0000
@@ -0,0 +1,124 @@
+// Copyright 2010 Richard Parker
+
+#include "mbed.h"
+#include "EAFont.h"
+
+#include "EAFontCache.h"
+#include "EAFontCacheEntry.h"
+#include "../screen/EALCD.h"
+#include "../images/EAImage.h"
+
+EAFont::EAFont()
+:   _entry(NULL)
+{
+}
+
+EAFont::~EAFont()
+{
+    // Return reference to characters.
+    if (_entry != NULL)
+    {
+        EAFontCache::instance().returnCharacters(_entry);
+        _entry = NULL;
+    }
+}
+
+EAFont::EAFont(const EAFont& font)
+{   
+    // Do copy like this to ensure that the references in the cache are kept up-to-date.
+    if (font._entry != NULL)
+    {
+        _entry = EAFontCache::instance().getCharacters(font._entry->path());
+    } else {
+        _entry = NULL;
+    }
+}
+
+EAFont& EAFont::operator=(const EAFont& font)
+{
+    if (&font == this)
+    {
+        return *this;
+    }
+
+    // Return the current entry.
+    if (_entry != NULL)
+    {
+        EAFontCache::instance().returnCharacters(_entry);
+        _entry = NULL;
+    }
+
+    // Do copy like this to ensure that the references in the cache are kept up-to-date.
+    if (font._entry != NULL)
+    {
+        _entry = EAFontCache::instance().getCharacters(font._entry->path());
+    } else {
+        _entry = NULL;
+    }
+    
+    return *this;
+}
+
+
+bool EAFont::load(const std::string& path)
+{
+    if (path.empty() == true)
+    {
+        // Invalid path passed in.
+        return false;
+    }
+    
+    // Return entry if needed.
+    if (_entry != NULL)
+    {
+        EAFontCache::instance().returnCharacters(_entry);
+        _entry = NULL;
+    }
+       
+    // Load font descriptor into look up table.  
+    _entry = EAFontCache::instance().getCharacters(path);
+
+    if (_entry == NULL)
+    {
+        return false;
+    }
+      
+    return true;    
+}
+
+bool EAFont::isValid() const 
+{ 
+    return (_entry != NULL);
+}
+
+bool EAFont::_getCharacter(char c, EACharacter& detail)
+{
+    if (_entry == NULL)
+    {
+        return false;
+    }
+
+    for (int i = 0; i < _entry->noChars(); i++)
+    {
+        if (_entry->chars()[i].id == c)
+        {
+            detail = _entry->chars()[i];
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+bool EAFont::_data(EAImage& image) 
+{ 
+    if (_entry == NULL)
+    {
+        return false;
+    }
+    
+    image = _entry->data();
+    
+    return true;
+}
+