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;;; Chickadee Game Toolkit
;;; Copyright © 2016 David Thompson <davet@gnu.org>
;;;
;;; Chickadee is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published
;;; by the Free Software Foundation, either version 3 of the License,
;;; or (at your option) any later version.
;;;
;;; Chickadee 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
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see
;;; <http://www.gnu.org/licenses/>.
(define-module (chickadee window)
#:use-module (ice-9 match)
#:use-module (srfi srfi-9)
#:use-module ((sdl2) #:prefix sdl2:)
#:use-module ((sdl2 events) #:prefix sdl2:)
#:use-module ((sdl2 video) #:prefix sdl2:)
#:export (open-window
close-window
window?
window-title
window-width
window-height
window-fullscreen?
with-window
swap-buffers))
(define-record-type <window>
(make-window sdl-window gl-context)
window?
(sdl-window unwrap-window)
(gl-context window-gl-context))
(define* (open-window #:key
(title "Chickadee")
(width 640)
(height 480)
fullscreen?)
(sdl2:set-gl-attribute! 'context-major-version 3)
(sdl2:set-gl-attribute! 'context-minor-version 3)
(sdl2:set-gl-attribute! 'double-buffer 1)
(sdl2:set-gl-attribute! 'depth-size 24)
(sdl2:set-gl-attribute! 'red-size 8)
(sdl2:set-gl-attribute! 'green-size 8)
(sdl2:set-gl-attribute! 'blue-size 8)
(sdl2:set-gl-attribute! 'alpha-size 8)
(sdl2:set-gl-attribute! 'stencil-size 8)
(sdl2:set-gl-attribute! 'retained-backing 0)
(sdl2:set-gl-attribute! 'framebuffer-srgb-capable 1)
(let* ((sdl-window (sdl2:make-window #:opengl? #t
#:title title
#:size (list width height)
#:fullscreen? fullscreen?))
(gl-context (sdl2:make-gl-context sdl-window))
(window (make-window sdl-window gl-context)))
(sdl2:set-gl-swap-interval! 'vsync)
window))
(define (close-window! window)
"Close WINDOW."
(sdl2:delete-gl-context! (window-gl-context window))
(sdl2:close-window! (unwrap-window window)))
(define (window-title window)
"Return the title of WINDOW."
(sdl2:window-title (unwrap-window window)))
(define (set-window-title! window title)
"Set TITLE for WINDOW."
(sdl2:set-window-title! (unwrap-window window) title))
(define (set-window-size! window width height)
(sdl2:set-window-size! (unwrap-window window) (list width height)))
(define-syntax-rule (with-window window body ...)
(dynamic-wind
(const #t)
(lambda () body ...)
(lambda ()
(close-window! window))))
(define (swap-buffers window)
(sdl2:swap-gl-window (unwrap-window window)))
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