Create initial bindings for ftgl.

1 files changed, 89 insertions, 0 deletions

diff --git a/2d/wrappers/ftgl.scm b/2d/wrappers/ftgl.scm
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+;;; guile-2d
+;;; Copyright (C) 2013 David Thompson <dthompson2@worcester.edu>
+;;;
+;;; Guile-2d is free software: you can redistribute it and/or modify it
+;;; under the terms of the GNU Lesser General Public License as
+;;; published by the Free Software Foundation, either version 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; Guile-2d is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; Lesser General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU Lesser General Public
+;;; License along with this program.  If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Quick and dirty wrapper for the FTGL library.
+;;
+;;; Code:
+
+(define-module (2d wrappers ftgl)
+  #:use-module (system foreign)
+  #:use-module (2d wrappers util))
+
+(define libftgl (dynamic-link "libftgl"))
+
+(define-syntax-rule (define-foreign name ret string-name args)
+  (define name
+    (pointer->procedure ret (dynamic-func string-name libftgl) args)))
+
+;;;
+;;; Enums
+;;;
+
+(define-enumeration ftgl-render-mode
+  (front #x0001)
+  (back  #x0002)
+  (side  #x0004)
+  (all   #xffff))
+
+(define-enumeration ftgl-text-alignment
+  (left    0)
+  (center  1)
+  (right   2)
+  (justify 3))
+
+(export ftgl-render-mode
+        ftgl-text-alignment)
+
+;;;
+;;; Fonts
+;;;
+
+(define-wrapped-pointer-type <ftgl-font>
+  ftgl-font?
+  wrap-ftgl-font unwrap-ftgl-font
+  (lambda (r port)
+    (let ((font (unwrap-ftgl-font r)))
+      (format port
+              "<ftgl-font ~x>"
+              (pointer-address font)))))
+
+(define-foreign %ftgl-create-texture-font
+  '* "ftglCreateTextureFont" '(*))
+
+(define-foreign %ftgl-set-font-face-size
+  void "ftglSetFontFaceSize" (list '* unsigned-int unsigned-int))
+
+(define-foreign %ftgl-render-font
+  void "ftglRenderFont" (list '* '* unsigned-int))
+
+(define (ftgl-create-texture-font filename)
+  (wrap-ftgl-font
+   (%ftgl-create-texture-font (string->pointer filename))))
+
+(define (ftgl-set-font-face-size font size res)
+  (%ftgl-set-font-face-size (unwrap-ftgl-font font) size res))
+
+(define (ftgl-render-font font text render-mode)
+  (%ftgl-render-font (unwrap-ftgl-font font)
+                     (string->pointer text)
+                     render-mode))
+
+(export ftgl-create-texture-font
+        ftgl-set-font-face-size
+        ftgl-render-font)