Received: (at 44172) by debbugs.gnu.org; 24 Oct 2020 19:51:17 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Oct 24 15:51:17 2020 Received: from localhost ([127.0.0.1]:35208 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kWPZN-0002bF-8c for submit <at> debbugs.gnu.org; Sat, 24 Oct 2020 15:51:17 -0400 Received: from quimby.gnus.org ([95.216.78.240]:52128) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1kWPZL-0002b3-NT for 44172 <at> debbugs.gnu.org; Sat, 24 Oct 2020 15:51:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=W4LI347L7i0en+QLk8LP8eflz3+n7c9vopiMCIUR9ow=; b=aUZlWV+hAxa0wpu6NW8ReWdbnq pYUpJ6/9Jp6lQ0CD80x6NzjguclqPt9fuY/hSongEvFtXABzFMHH/qt6aEgFK3h10fduYy6q28w/K XC9dIl9UGhlNsLfWYaFwBTwlmnIKYS8c7Z+FzUOmsxJCcvEyy7vCGMqL7LLaKQhz5tIk=; Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1kWPZD-0007Xt-95; Sat, 24 Oct 2020 21:51:09 +0200 From: Lars Ingebrigtsen <larsi@HIDDEN> To: Alan Third <alan@HIDDEN> Subject: Re: bug#44172: 28.0.50; Exporting image data References: <87mu0dgpgv.fsf@HIDDEN> <20201023162419.GB59267@HIDDEN> Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAIVBMVEX27tn1797QxrqU jImKgX2Ee3hvZ2crJihDOz5STE3////GrS5UAAAAAWJLR0QKaND0VgAAAAd0SU1FB+QKGBMgGAaU NTgAAAGDSURBVDjLjZJNboMwEIWHngBu0B+p6wiSqnvMCQBL3VbCiS8Qc4IwbFsJ4dt2xoZgKpDy pAR437w3TgRAoDiZFcNa0Z0kPLdJ1j4pSPxTAnEUbYJoIxEuj+KNBQ5s++uq5KHEQ1XRHoA9ED90 qp0VCbxuCyDbEWTiWAlRnYQQayCKmiT4K8tDQEaZvmWn2qnKsqOYElVRHN6NB1VVZ0VZHfPcJeQh 6mQtG7ptHC+LPAdyVPqMUqmmljzFgD6U+BrSJzPcmg9FUEpO0YFAKTneZI8ezGoaAmfjpIcAqHoB l2sIOHFx/nWdUAS0tdbYtT0DvQU0gQsBrelRh4CabGudtF2AVtYqjeTey/R9hwfBGjohWK4ae1+l iE0DQFupGz0Yp+vAwNIDTolABHrX1c/TC2DNiXEB2HLVenqgE8DIJvo/2NCuuRFoumsR0bTLCbTu ezDkYI/+sGhH85PSG5qewfpfyBlXNn6z//IJnYuw76oQf+ltK/MLA9N2OC9A0/FtZ/4A7BBH78of cLkAAAAldEVYdGRhdGU6Y3JlYXRlADIwMjAtMTAtMjRUMTk6MzI6MjQrMDA6MDBYEf84AAAAJXRF WHRkYXRlOm1vZGlmeQAyMDIwLTEwLTI0VDE5OjMyOjI0KzAwOjAwKUxHhAAAAABJRU5ErkJggg== X-Now-Playing: Contriva's _If you had stayed..._: "after work club" Date: Sat, 24 Oct 2020 21:51:05 +0200 In-Reply-To: <20201023162419.GB59267@HIDDEN> (Alan Third's message of "Fri, 23 Oct 2020 17:24:19 +0100") Message-ID: <87mu0bcsie.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Alan Third <alan@HIDDEN> writes: > Are you talking about using an image spec that we use to display > images, which can already include rotation and resizing? Yes. Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 44172 Cc: 44172 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Alan Third <alan@HIDDEN> writes: > Are you talking about using an image spec that we use to display > images, which can already include rotation and resizing? Yes. > That would be difficult because the stored image data doesn't have > those transformations applied, unless you're using imagemagick. We'd > have to draw it to a buffer (either on-screen or off) and then read > back that data. But it's the untransformed data that we'd want here, so that sounds great to me. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#44172; Package emacs.
Full text available.Received: (at 44172) by debbugs.gnu.org; 23 Oct 2020 16:24:33 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 23 12:24:33 2020 Received: from localhost ([127.0.0.1]:58069 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kVzrl-00070R-8q for submit <at> debbugs.gnu.org; Fri, 23 Oct 2020 12:24:33 -0400 Received: from wilbur.contactoffice.com ([212.3.242.68]:42888) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <alan@HIDDEN>) id 1kVzri-000708-Eu for 44172 <at> debbugs.gnu.org; Fri, 23 Oct 2020 12:24:32 -0400 Received: from smtpauth2.co-bxl (smtpauth2.co-bxl [10.2.0.24]) by wilbur.contactoffice.com (Postfix) with ESMTP id EAFC960E; Fri, 23 Oct 2020 18:24:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1603470263; s=20200222-6h9o; d=idiocy.org; i=alan@HIDDEN; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:In-Reply-To; l=1225; bh=HtI0ALNeSXavXGmpY3GwbQAD36HxqtO2iYXJ/8gYBF0=; b=W9GVi3tqMOubMWGqMVLoIhFmnbkY4ax5BvauLxayQoPF1mk/9ygLkF8SXr0AGmh2 adG1GMBfE11VQWgsEyyFPduNaHdNZxsVVz25JS+TneX2XARJN5c1VRMREuYTUL7hjX5 WP8GF2CE0BltoicHS9DY2qxkhWa1Q5XO1Bx91qZ0OH4QqXXYv3MIepJ45uBbiI+1X9a JzzXnhJ92ByKNVEpsFshE4r1vq5M4asQCu1dm1ryUPTA1o2GMubwvBlhfcT+zEUi8r8 rwVq46g8Nyfn8hd+VJQmhdBKuglo/XYU7m9nlHga/QNNoNNLQJkcUr/A8R/gNySKQX4 kO7kiFmMGw== Received: by smtp.mailfence.com with ESMTPA ; Fri, 23 Oct 2020 18:24:20 +0200 (CEST) Received: by breton.holly.idiocy.org (Postfix, from userid 501) id 4BF1A202630F06; Fri, 23 Oct 2020 17:24:19 +0100 (BST) Date: Fri, 23 Oct 2020 17:24:19 +0100 From: Alan Third <alan@HIDDEN> To: Lars Ingebrigtsen <larsi@HIDDEN> Subject: Re: bug#44172: 28.0.50; Exporting image data Message-ID: <20201023162419.GB59267@HIDDEN> Mail-Followup-To: Alan Third <alan@HIDDEN>, Lars Ingebrigtsen <larsi@HIDDEN>, 44172 <at> debbugs.gnu.org References: <87mu0dgpgv.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87mu0dgpgv.fsf@HIDDEN> X-Spam-Flag: NO X-Spam-Status: No, hits=-2.9 required=4.7 symbols=ALL_TRUSTED, BAYES_00 device=10.2.0.1 X-ContactOffice-Account: com:241649512 X-Spam-Score: -0.7 (/) X-Debbugs-Envelope-To: 44172 Cc: 44172 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.7 (-) On Fri, Oct 23, 2020 at 01:18:40PM +0200, Lars Ingebrigtsen wrote: > > 1) Making image data available to Emacs Lisp. > > This is something that I've often wanted for other reasons -- I want to > know how an SVG was rendered, for instance (especially when doing > font-based stuff), and there's no way to actually tell. > > So I think Emacs should have a function like > > (export-image-data IMAGE &rest SPECS) > > that will just take the image cache data for IMAGE (or the frame > specified by SPECS, if multi-frame) and dump the RGB(A) data into the > current buffer (which should be unibyte, for efficiency), and return > a plist of width/height/bytes-per-pixel/rgb(a) ordering. This is > basically the PPM binary format, but without the heading. > > This allows us to do easy transforms like cropping and rotating from > Lisp, too. Are you talking about using an image spec that we use to display images, which can already include rotation and resizing? That would be difficult because the stored image data doesn't have those transformations applied, unless you're using imagemagick. We'd have to draw it to a buffer (either on-screen or off) and then read back that data. -- Alan Third
bug-gnu-emacs@HIDDEN:bug#44172; Package emacs.
Full text available.Received: (at 44172) by debbugs.gnu.org; 23 Oct 2020 11:50:01 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 23 07:50:01 2020 Received: from localhost ([127.0.0.1]:56175 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kVva4-0005mN-Pc for submit <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:50:01 -0400 Received: from quimby.gnus.org ([95.216.78.240]:54576) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1kVva2-0005m5-Fn for 44172 <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:49:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date: References:Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=85d+pYUkVukF5fdroKkLt6XJmceaPCrRVS6wLB5nZqQ=; b=JNZdrP0FCaMO2LgJKgkFOYG1Du UFxdZjzGpEJ94/Qx5E3o1FWQAQbrDlAOeuw6H0Vh23vy9EwWua6ekWvcShujE0w9xMLE9KRgoUThv LNRV6w35JIdg3m+D+wwSE98CjyAQgPIU6JXf7PKBdsJF+/D1SDbhHG0QTVrs5ZY2Kfug=; Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1kVvZu-0000S8-7s; Fri, 23 Oct 2020 13:49:52 +0200 From: Lars Ingebrigtsen <larsi@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#44172: 28.0.50; Exporting image data References: <87mu0dgpgv.fsf@HIDDEN> <83a6wdjhco.fsf@HIDDEN> Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAABGdBTUEAALGPC/xhBQAAACBj SFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAAKlBMVEX18+zo5dvh3dLZ 1cqmoZbLxrvAu7AvKCFkXVVDPDVJQjqKhXuCfHP///8XYhd7AAAAAWJLR0QN9rRh9QAAAAd0SU1F B+QKFwsTGyGg4ywAAAGbSURBVDjLfZSxTsMwEIZtxMZiO30Bp2JjaBKhrh2CqBhpYa4ESAxMMCTp XEiLGJHaZkYyRSxsQSxslLfCdtLknKTc4Dj+cv+dz+cgJA0ThKia6AFT/Sje9VodYNwElBRqkkKG VMVgcBMQtaQ0KSVQhG5ojhvAPx5GDLIFbPXYDrhK1yZG6ZQxl2PK2hobgKqP9YB2OEy35Q/9K9+/ GHbKkmrrBvHyNRCP89tKDbsz0U9m4iv8qIOXYCZ68XcVxOIy+BRH67sqCMRzcDxfRNUYB0/9h/Q6 vU97Zla4tZyEJ+vfyWpkOuC9aBHGqygKOxWwGy7G8Ti8CYnZEhIkiQSpBLpWuJSKgrdlg1Qrmfbf pz8TMcpOoDDrfMB42+PyqOQI4lhnrs0tz6EI7w8gYHKNMumB8OHAIQC4fHO0UgoA6qq70Fa7sE7p RkpOaNEM2HKKrEjel1kbMBd2Ay273XJhVtDDgx5Zz2TAhjtnTunBQYVxlpWOwWCtMIyhAG0KbsOs stPRGqx+1XB+nSGAfwO4nt9zUgfaH9uoiPQHHR1Rs3csTsoAAAAldEVYdGRhdGU6Y3JlYXRlADIw MjAtMTAtMjNUMTE6MTk6MjcrMDA6MDBuj4yLAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDIwLTEwLTIz VDExOjE5OjI3KzAwOjAwH9I0NwAAAABJRU5ErkJggg== X-Now-Playing: Ossia's _Devil's Dance_: "(untitled)" Date: Fri, 23 Oct 2020 13:49:49 +0200 In-Reply-To: <83a6wdjhco.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 23 Oct 2020 14:45:43 +0300") Message-ID: <87tuulf9gi.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Eli Zaretskii <eliz@HIDDEN> writes: > Doesn't svg.el come close enough? Not really -- if you have an image you've cropped, you can certainly write it out as .svg, but it'd be huge. Then PPM would be preferable. But neither are much good, in general. Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 44172 Cc: 44172 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Doesn't svg.el come close enough? Not really -- if you have an image you've cropped, you can certainly write it out as .svg, but it'd be huge. Then PPM would be preferable. But neither are much good, in general. -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
bug-gnu-emacs@HIDDEN:bug#44172; Package emacs.
Full text available.Received: (at 44172) by debbugs.gnu.org; 23 Oct 2020 11:46:07 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 23 07:46:07 2020 Received: from localhost ([127.0.0.1]:56153 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kVvWJ-0004aI-2S for submit <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:46:07 -0400 Received: from eggs.gnu.org ([209.51.188.92]:56986) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1kVvWH-0004St-35 for 44172 <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:46:05 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:45219) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1kVvWB-0004CB-OH; Fri, 23 Oct 2020 07:45:59 -0400 Received: from [176.228.60.248] (port=2112 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from <eliz@HIDDEN>) id 1kVvW9-0005aK-NT; Fri, 23 Oct 2020 07:45:59 -0400 Date: Fri, 23 Oct 2020 14:45:43 +0300 Message-Id: <83a6wdjhco.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Lars Ingebrigtsen <larsi@HIDDEN> In-Reply-To: <87mu0dgpgv.fsf@HIDDEN> (message from Lars Ingebrigtsen on Fri, 23 Oct 2020 13:18:40 +0200) Subject: Re: bug#44172: 28.0.50; Exporting image data References: <87mu0dgpgv.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 44172 Cc: 44172 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Lars Ingebrigtsen <larsi@HIDDEN> > Date: Fri, 23 Oct 2020 13:18:40 +0200 > > 2) Create image files. Doesn't svg.el come close enough?
bug-gnu-emacs@HIDDEN:bug#44172; Package emacs.
Full text available.Received: (at submit) by debbugs.gnu.org; 23 Oct 2020 11:18:54 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 23 07:18:54 2020 Received: from localhost ([127.0.0.1]:55539 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1kVv5x-0000Uu-PW for submit <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:18:54 -0400 Received: from lists.gnu.org ([209.51.188.17]:59104) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <larsi@HIDDEN>) id 1kVv5u-0000Uk-7J for submit <at> debbugs.gnu.org; Fri, 23 Oct 2020 07:18:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51368) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <larsi@HIDDEN>) id 1kVv5t-0004lD-WF for bug-gnu-emacs@HIDDEN; Fri, 23 Oct 2020 07:18:50 -0400 Received: from quimby.gnus.org ([2a01:4f9:2b:f0f::2]:43678) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <larsi@HIDDEN>) id 1kVv5q-00085m-Or for bug-gnu-emacs@HIDDEN; Fri, 23 Oct 2020 07:18:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnus.org; s=20200322; h=Content-Type:MIME-Version:Message-ID:Date:Subject:To:From: Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=hR9BUMSNMB962SYVBYYQQMP4maPj87RtVpRYWxRpKXg=; b=fDptH+IxzQSujDjFeS1FeVE3WF LlRAmOiSqMSEXTBYeLc+uehtRYYAgcIA8jINzJsBaXi1bxbsxFH7XjW3sHk6bx0HMN7IzaFAMxzhu T1HqceC9E+IDx5Q3ryr35i5p/y9/vihDmp6EguYGpUDJFZkoYJHLTkmu/BOxVr891t4E=; Received: from cm-84.212.202.86.getinternet.no ([84.212.202.86] helo=xo) by quimby.gnus.org with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <larsi@HIDDEN>) id 1kVv5l-00009O-O0 for bug-gnu-emacs@HIDDEN; Fri, 23 Oct 2020 13:18:44 +0200 From: Lars Ingebrigtsen <larsi@HIDDEN> To: bug-gnu-emacs@HIDDEN Subject: 28.0.50; Exporting image data X-Now-Playing: Ossia's _Devil's Dance_: "(untitled)" Date: Fri, 23 Oct 2020 13:18:40 +0200 Message-ID: <87mu0dgpgv.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Report: Spam detection software, running on the system "quimby.gnus.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: There's been some discussion off-list about adding simple image manipulation functions to Emacs, and there's really only three transforms that are in scope for Emacs: Cropping, rotating and resizing. Content analysis details: (-2.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Received-SPF: pass client-ip=2a01:4f9:2b:f0f::2; envelope-from=larsi@HIDDEN; helo=quimby.gnus.org X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -2.3 (--) There's been some discussion off-list about adding simple image manipulation functions to Emacs, and there's really only three transforms that are in scope for Emacs: Cropping, rotating and resizing. Now, there are packages out there that allow doing this, but they rely on external programs to actually do the image wrangling. I wondered what it would take to make it possible to do this in-Emacs, and I think we basically have all the needed stuff -- we just need to hook it up and make it available. 1) Making image data available to Emacs Lisp. This is something that I've often wanted for other reasons -- I want to know how an SVG was rendered, for instance (especially when doing font-based stuff), and there's no way to actually tell. So I think Emacs should have a function like (export-image-data IMAGE &rest SPECS) that will just take the image cache data for IMAGE (or the frame specified by SPECS, if multi-frame) and dump the RGB(A) data into the current buffer (which should be unibyte, for efficiency), and return a plist of width/height/bytes-per-pixel/rgb(a) ordering. This is basically the PPM binary format, but without the heading. This allows us to do easy transforms like cropping and rotating from Lisp, too. 2) Create image files. But mogrifying images is all well and good, but if we can't save the data, it's not much use. Of course we could just save the data as PPM, but that's not very helpful. So Emacs needs to be able to write image files... which sounds like a big thing, but it isn't really: As long as we can save .jpeg and .png files, that's fine. Fortunately, Emacs links with libpng and libjpeg already, so adding a (encode-image-data TYPE) function is less work than it would seem. In GNU Emacs 28.0.50 (build 124, x86_64-pc-linux-gnu, GTK+ Version 3.24.23, cairo version 1.16.0) of 2020-10-22 built on xo Repository revision: 954a4decfcc8e41084789516773b22d0adc11d91 Repository branch: master Windowing system distributor 'The X.Org Foundation', version 11.0.12008000 System Description: Debian GNU/Linux bullseye/sid -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no
Lars Ingebrigtsen <larsi@HIDDEN>:bug-gnu-emacs@HIDDEN.
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