102 lines
3.7 KiB
EmacsLisp
102 lines
3.7 KiB
EmacsLisp
;;; image-size-tests.el --- tests for image scaling -*- lexical-binding: t; -*-
|
|
|
|
;; Copyright (C) 2017-2024 Free Software Foundation, Inc.
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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.
|
|
|
|
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; To test: Load the file and eval (image-size-tests).
|
|
;; A non-erroring result is a success.
|
|
|
|
;;; Code:
|
|
|
|
(defmacro im-should (image width height &rest props)
|
|
`(let ((im (im-image ,image ,@props)))
|
|
(unless (im-compare im ,width ,height)
|
|
(error "%s %s didn't succeed; size is %s"
|
|
',image ',props (image-size im t)))))
|
|
|
|
(defun im-image (type &rest props)
|
|
(let ((image-scaling-factor 1))
|
|
(apply
|
|
#'create-image
|
|
(expand-file-name
|
|
(if (eq type :w)
|
|
"test/data/image/blank-200x100.png"
|
|
"test/data/image/blank-100x200.png")
|
|
source-directory)
|
|
'imagemagick nil props)))
|
|
|
|
(defun im-compare (image width height)
|
|
(let ((size (image-size image t)))
|
|
(and (= (car size) width)
|
|
(= (cdr size) height))))
|
|
|
|
(defun image-size-tests ()
|
|
(unless (and (fboundp 'imagemagick-types)
|
|
(imagemagick-types))
|
|
(error "This only makes sense if ImageMagick is installed"))
|
|
;; Test the image that's wider than it is tall.
|
|
;; Default sizes.
|
|
(im-should :w 200 100)
|
|
;; Changing one dimension changes the other.
|
|
(im-should :w 100 50 :width 100)
|
|
(im-should :w 100 50 :height 50)
|
|
;; The same with :max-width etc.
|
|
(im-should :w 100 50 :max-width 100)
|
|
(im-should :w 100 50 :max-height 50)
|
|
;; :width wins over :max-width etc
|
|
(im-should :w 300 150 :width 300 :max-width 100)
|
|
(im-should :w 400 200 :height 200 :max-height 100)
|
|
;; Specifying both width and height is fine.
|
|
(im-should :w 300 50 :width 300 :height 50)
|
|
;; A too-large :max-width (etc) has no effect.
|
|
(im-should :w 200 100 :max-width 300)
|
|
(im-should :w 200 100 :max-height 300)
|
|
;; Both max-width/height.
|
|
(im-should :w 100 50 :max-width 100 :max-height 75)
|
|
(im-should :w 50 25 :max-width 100 :max-height 25)
|
|
;; :width and :max-height (max-height wins).
|
|
(im-should :w 400 200 :width 400 :max-height 200)
|
|
(im-should :w 400 200 :width 500 :max-height 200)
|
|
|
|
;; Test the image that's taller than it is wide.
|
|
(im-should :h 100 200)
|
|
;; Changing one dimension changes the other.
|
|
(im-should :h 50 100 :width 50)
|
|
(im-should :h 50 100 :height 100)
|
|
;; The same with :max-width etc.
|
|
(im-should :h 50 100 :max-width 50)
|
|
(im-should :h 50 100 :max-height 100)
|
|
;; :width wins over :max-width etc
|
|
(im-should :h 300 600 :width 300 :max-width 100)
|
|
(im-should :h 150 300 :height 300 :max-height 100)
|
|
;; Specifying both width and height is fine.
|
|
(im-should :h 300 50 :width 300 :height 50)
|
|
;; A too-large :max-width (etc) has no effect.
|
|
(im-should :h 100 200 :max-width 300)
|
|
(im-should :h 100 200 :max-height 300)
|
|
;; Both max-width/height.
|
|
(im-should :h 50 100 :max-width 75 :max-height 100)
|
|
(im-should :h 25 50 :max-width 25 :max-height 100)
|
|
;; :height and :max-width (max-width wins).
|
|
(im-should :h 200 400 :height 400 :max-width 200)
|
|
(im-should :h 200 400 :height 500 :max-width 200)
|
|
)
|
|
|
|
;;; image-size-tests.el ends here
|