Created FontWrapper, and made FT flag in makefile.

1 files changed, 100 insertions, 0 deletions

diff --git a/crawl-ref/source/fontwrapper-ft.h b/crawl-ref/source/fontwrapper-ft.h
new file mode 100644
index 0000000000..e4302c73cf
--- /dev/null
+++ b/crawl-ref/source/fontwrapper-ft.h
@@ -0,0 +1,100 @@
+#ifndef FT_FONTWRAPPER_H
+#define FT_FONTWRAPPER_H
+
+#ifdef USE_TILE
+#include "tilefont.h"
+
+#ifdef USE_FT
+
+// This class handles loading FreeType2 fonts and rendering them via OpenGL.
+
+// TODO enne - Fonts could be made better by:
+//
+// * handling kerning
+// * using SDL_font (maybe?)
+
+class FTFontWrapper : public FontWrapper
+{
+public:
+    FTFontWrapper();
+    virtual ~FTFontWrapper();
+
+    // font loading
+    virtual bool load_font( const char *font_name, unsigned int font_size,
+                    bool outline);
+
+    // render just text
+    virtual 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
+    virtual 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,
+                                bool tooltip = false);
+
+    // FontBuffer helper functions
+    virtual void store(FontBuffer &buf, float &x, float &y,
+               const std::string &s, const VColour &c);
+    virtual void store(FontBuffer &buf, float &x, float &y,
+                const formatted_string &fs);
+    virtual void store(FontBuffer &buf, float &x, float &y, unsigned char c,
+                const VColour &col);
+
+    virtual unsigned int char_width();
+    virtual unsigned int char_height();
+
+    virtual unsigned int string_width(const char *text);
+    virtual unsigned int string_width(const formatted_string &str);
+    virtual unsigned int string_height(const char *text);
+    virtual unsigned int string_height(const formatted_string &str);
+
+    // Try to split this string to fit in w x h pixel area.
+    virtual formatted_string split( const formatted_string &str,
+                                    unsigned int max_width,
+                                    unsigned int max_height);
+
+    virtual const GenericTexture *font_tex();
+
+protected:
+    void store(FontBuffer &buf, float &x, float &y,
+               const std::string &s, const VColour &c, float orig_x);
+    void store(FontBuffer &buf, float &x, float &y, const formatted_string &fs,
+               float orig_x);
+
+    int find_index_before_width(const char *str, int max_width);
+
+    struct GlyphInfo
+    {
+        // offset before drawing glyph; can be negative
+        char offset;
+
+        // per-glyph horizontal advance
+        char advance;
+
+        // per-glyph width
+        char width;
+
+        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 // USE_FT
+#endif // USE_TILE
+#endif // include guard
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