;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Andy Wingo <wingo@igalia.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix 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 Guix 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 Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu build svg)
  #:use-module (rsvg)
  #:use-module (cairo)
  #:use-module (srfi srfi-11)
  #:export (svg->png))

(define* (downscaled-surface surface
                             #:key
                             source-width source-height
                             width height)
  "Return a new rendering context where SURFACE is scaled to WIDTH x HEIGHT."
  (let ((cr (cairo-create (cairo-image-surface-create 'argb32
                                                      width height))))
    (cairo-scale cr (/ width source-width) (/ height source-height))
    (cairo-set-source-surface cr surface 0 0)
    (cairo-pattern-set-filter (cairo-get-source cr) 'best)
    (cairo-rectangle cr 0 0 source-width source-height)
    (cairo-fill cr)
    cr))

(define* (svg->png in-svg out-png
                   #:key width height)
  "Render the file at IN-SVG as a PNG file in OUT-PNG.  When WIDTH and HEIGHT
are provided, use them as the dimensions of OUT-PNG; otherwise preserve the
dimensions of IN-SVG."
  (define svg
    (rsvg-handle-new-from-file in-svg))

  (let-values (((origin-width origin-height em ex)
                (rsvg-handle-get-dimensions svg)))
    (let* ((surf (cairo-image-surface-create 'argb32
                                             origin-width origin-height))
           (cr   (cairo-create surf)))
      (rsvg-handle-render-cairo svg cr)
      (cairo-surface-flush surf)
      (let ((cr (if (and width height
                         (not (= width origin-width))
                         (not (= height origin-height)))
                    (downscaled-surface surf
                                        #:source-width origin-width
                                        #:source-height origin-height
                                        #:width width
                                        #:height height)
                    cr)))
        (cairo-surface-write-to-png (cairo-get-target cr) out-png)))))

;;; svg.scm ends here
4e2a7d4'>Merge remote-tracking branch 'origin/master' into core-updates-frozen</a></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-10-23 13:25:01 +0200'>2021-10-23</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=7628430a2f46a4a57d5ff7e51b1be80b7765c96c'>gnu: php: Update to 7.4.25 [security fixes].</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-10-12 17:46:23 +0000'>2021-10-12</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=a1eca979fb8da842e73c42f4f53be29b169810f2'>Merge remote-tracking branch 'origin/master' into core-updates-frozen.</a></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-10-05 13:45:29 +0200'>2021-10-05</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=9aaf402a379b9ac9e4c3eee5b16f7496d7606e91'>gnu: php: Patch failing test case.</a><span class='msg-avail'>...</span></td><td>Ryan Sundberg via Guix-patches via</td></tr>
<tr><td><span title='2021-09-08 12:05:29 +0200'>2021-09-08</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=4ccaaad45d58ebd6af47090b091cb7017f3536e7'>gnu: php: Disable failing test.</a><span class='msg-avail'>...</span></td><td>Guillaume Le Vaillant</td></tr>
<tr><td><span title='2021-09-06 13:51:49 +0200'>2021-09-06</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=aa1e952d21827ae97d5ff0416cf5600cb6d7bdfd'>gnu: php: Remove watchpoint tests on powerpc64le.</a><span class='msg-avail'>...</span></td><td>Thiago Jung Bauermann</td></tr>
<tr><td><span title='2021-07-29 19:57:57 +0200'>2021-07-29</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=c022c1e5b23b9916264c3b4b8e13f623a14ddaaf'>gnu: php: Update to 7.4.22 [security fixes].</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-07-23 17:29:34 +0200'>2021-07-23</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=379bb236d44abb93f490115cf26800eb4dc25b2d'>gnu: php: Update to 7.4.21.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-06-26 22:46:09 +0200'>2021-06-26</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=68e378913914f35e40b05108c709f4d1eb55b18a'>gnu: php: Build sodium.</a><span class='msg-avail'>...</span></td><td>Aljosha Papsch</td></tr>
<tr><td><span title='2021-06-03 18:23:39 +0200'>2021-06-03</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=0e8d650c4f578a27b30891751780b75239ffd3f8'>gnu: php: Update to 7.4.20.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-05-06 13:56:26 +0200'>2021-05-06</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=1ebbf76862b01c92e6d6289612b66599e71ceaf3'>gnu: php: Update to 7.4.19.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-05-01 11:29:11 +0200'>2021-05-01</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=9b74cfd16140b971d58dc5ae77ef8f8e98c5b47f'>gnu: php: Update to 7.4.18.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-03-05 16:12:31 +0100'>2021-03-05</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=81aa2fa4ae8fda14dd900ca07559f809ab3354b9'>gnu: php: Update to 7.4.16 [security fixes].</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-02-26 12:57:53 +0100'>2021-02-26</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=8753bb4192410e6cd81a4072c1dd5f2ff822320e'>gnu: php: Disable failing test on Arm.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2021-02-09 17:09:49 +0100'>2021-02-09</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=f2130228ed86fed81806a662ed59aa74ed2398ed'>gnu: php: Disable failing tests on arm.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2021-02-08 16:36:21 +0100'>2021-02-08</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=48650b0c3569222d53d29320ba97343dc4ef8038'>gnu: php: Update to 7.4.15.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2021-01-07 17:18:05 +0100'>2021-01-07</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=d033540e6c113323089403a26e39f9a288c9c857'>gnu: php: Update to 7.4.14.</a><span class='msg-avail'>...</span></td><td>Julien Lepiller</td></tr>
<tr><td><span title='2020-11-26 04:22:51 +0100'>2020-11-26</span></td><td><a href='/guix/commit/gnu/packages/php.scm?id=824a9f1060111d9ab2317b1453360e39eda8201a'>gnu: php: Update to 7.4.13.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>