71 lines
2.1 KiB
Scheme
71 lines
2.1 KiB
Scheme
|
;;; Copyright (C) 2024 David Thompson <dave@spritely.institute>
|
||
|
|
;;;
|
||
|
|
;;; Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
;;; you may not use this file except in compliance with the License.
|
||
|
|
;;; You may obtain a copy of the License at
|
||
|
|
;;;
|
||
|
|
;;; http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
;;;
|
||
|
|
;;; Unless required by applicable law or agreed to in writing, software
|
||
|
|
;;; distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
;;; See the License for the specific language governing permissions and
|
||
|
|
;;; limitations under the License.
|
||
|
|
|
||
|
|
;;; Commentary:
|
||
|
|
;;;
|
||
|
|
;;; HTMLCanvasElement and CanvasRenderingContext2D bindings.
|
||
|
|
;;;
|
||
|
|
;;; Code:
|
||
|
|
|
||
|
|
(define-module (dom canvas)
|
||
|
|
#:use-module (hoot ffi)
|
||
|
|
#:export (get-context
|
||
|
|
set-fill-color!
|
||
|
|
set-font!
|
||
|
|
set-text-align!
|
||
|
|
clear-rect
|
||
|
|
fill-rect
|
||
|
|
fill-text
|
||
|
|
draw-image
|
||
|
|
set-scale!
|
||
|
|
set-transform!
|
||
|
|
set-image-smoothing-enabled!))
|
||
|
|
|
||
|
|
;; HTMLCanvasElement
|
||
|
|
(define-foreign get-context
|
||
|
|
"canvas" "getContext"
|
||
|
|
(ref extern) (ref string) -> (ref extern))
|
||
|
|
|
||
|
|
;; CanvasRenderingContext2D
|
||
|
|
(define-foreign set-fill-color!
|
||
|
|
"canvas" "setFillColor"
|
||
|
|
(ref extern) (ref string) -> none)
|
||
|
|
(define-foreign set-font!
|
||
|
|
"canvas" "setFont"
|
||
|
|
(ref extern) (ref string) -> none)
|
||
|
|
(define-foreign set-text-align!
|
||
|
|
"canvas" "setTextAlign"
|
||
|
|
(ref extern) (ref string) -> none)
|
||
|
|
(define-foreign clear-rect
|
||
|
|
"canvas" "clearRect"
|
||
|
|
(ref extern) f64 f64 f64 f64 -> none)
|
||
|
|
(define-foreign fill-rect
|
||
|
|
"canvas" "fillRect"
|
||
|
|
(ref extern) f64 f64 f64 f64 -> none)
|
||
|
|
(define-foreign fill-text
|
||
|
|
"canvas" "fillText"
|
||
|
|
(ref extern) (ref string) f64 f64 -> none)
|
||
|
|
(define-foreign draw-image
|
||
|
|
"canvas" "drawImage"
|
||
|
|
(ref extern) (ref extern) f64 f64 f64 f64 f64 f64 f64 f64 -> none)
|
||
|
|
(define-foreign set-scale!
|
||
|
|
"canvas" "setScale"
|
||
|
|
(ref extern) f64 f64 -> none)
|
||
|
|
(define-foreign set-transform!
|
||
|
|
"canvas" "setTransform"
|
||
|
|
(ref extern) f64 f64 f64 f64 f64 f64 -> none)
|
||
|
|
(define-foreign set-image-smoothing-enabled!
|
||
|
|
"canvas" "setImageSmoothingEnabled"
|
||
|
|
(ref extern) i32 -> none)
|