Large tiles-related changes. Platform-specific rendering removed and replaced with SDL/OpenGL.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6550 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 71 insertions, 0 deletions

diff --git a/crawl-ref/source/tilefont.h b/crawl-ref/source/tilefont.h
new file mode 100644
index 0000000000..5d8939a9a9
--- /dev/null
+++ b/crawl-ref/source/tilefont.h
@@ -0,0 +1,71 @@
+/*
+ *  File:       tilefont.h
+ *  Created by: ennewalker on Sat Jan 5 01:33:53 2008 UTC
+ *
+ *  Modified for Crawl Reference by $Author: ennewalker $ on $Date: 2008-03-07 $
+ */
+
+#ifndef TILEFONT_H
+#define TILEFONT_H
+
+#include "AppHdr.h"
+#include "externs.h"
+#include "tiletex.h"
+
+// This class handles loading FreeType2 fonts and rendering them via OpenGL.
+
+// TODO enne - Fonts could be made better by:
+//
+// * handling kerning
+//
+// * the possibility of streaming this class in and out so that Crawl doesn't
+//   have to link against FreeType2 or be forced do as much processing at 
+//   load time.
+
+class FTFont
+{
+public:
+    FTFont();
+    virtual ~FTFont();
+
+    bool load_font(const char *font_name, unsigned int font_size);
+
+    // render just text
+    void render_textblock(unsigned int x, unsigned int y,
+                          unsigned char *chars, unsigned char *colours,
+                          unsigned int width, unsigned int height,
+                          bool drop_shadow = false);
+
+    // render text + background box
+    void render_string(unsigned int x, unsigned int y, const char *text,
+                       const coord_def &min_pos, const coord_def &max_pos,
+                       unsigned char font_colour, bool drop_shadow = false,
+                       unsigned char box_alpha = 0,
+                       unsigned char box_colour = 0, unsigned int outline = 0);
+
+    unsigned int char_width() const { return m_max_advance.x; }
+    unsigned int char_height() const { return m_max_advance.y; }
+
+protected:
+    struct GlyphInfo
+    {
+        // offset before drawing glyph; can be negative
+        int offset;
+
+        // per-glyph horizontal advance
+        int advance;
+
+        bool renderable;
+    };
+    GlyphInfo *m_glyphs;
+
+    // cached value of the maximum advance from m_advance
+    coord_def m_max_advance;
+
+    // minimum offset (likely negative)
+    int m_min_offset;
+
+    GenericTexture m_tex;
+};
+
+#endif