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+WEBVTT
+
+00:00:03.600 --> 00:00:04.560
+hello
+
+00:00:04.560 --> 00:00:06.720
+hopefully everyone is staying safe and
+
+00:00:06.720 --> 00:00:08.000
+staying home
+
+00:00:08.000 --> 00:00:10.000
+I feel very grateful to live in a world
+
+00:00:10.000 --> 00:00:12.000
+today that technology and free software
+
+00:00:12.000 --> 00:00:13.759
+can be leveraged to connect people in
+
+00:00:13.759 --> 00:00:16.080
+such disconnected and difficult times
+
+00:00:16.080 --> 00:00:17.840
+and to have an online conference like
+
+00:00:17.840 --> 00:00:19.920
+this hopefully you've all
+
+00:00:19.920 --> 00:00:22.960
+enjoyed this year's Emacs con so far
+
+00:00:22.960 --> 00:00:24.720
+many thanks to all the people that made
+
+00:00:24.720 --> 00:00:26.880
+this possible
+
+00:00:26.880 --> 00:00:30.000
+anyways welcome to my talk extend Emacs
+
+00:00:30.000 --> 00:00:30.960
+to modern gui
+
+00:00:30.960 --> 00:00:34.079
+applications with eaf the imax
+
+00:00:34.079 --> 00:00:35.920
+application framework
+
+00:00:35.920 --> 00:00:38.320
+this will be my first ever talk so
+
+00:00:38.320 --> 00:00:39.840
+apologies for my
+
+00:00:39.840 --> 00:00:43.280
+inexperience let us begin
+
+00:00:43.280 --> 00:00:46.559
+about me my name is matthew zing you can
+
+00:00:46.559 --> 00:00:47.840
+also call me mt
+
+00:00:47.840 --> 00:00:50.640
+or mindu I'm a chinese canadian living
+
+00:00:50.640 --> 00:00:51.440
+in toronto
+
+00:00:51.440 --> 00:00:54.239
+ontario offline I'm an undergrad
+
+00:00:54.239 --> 00:00:56.079
+studying mathematics at the university
+
+00:00:56.079 --> 00:00:57.760
+of urudu
+
+00:00:57.760 --> 00:01:00.480
+online I mean one of the admins of the
+
+00:01:00.480 --> 00:01:03.039
+Emacs china
+
+00:01:03.039 --> 00:01:06.320
+the largest Emacs forum in china so
+
+00:01:06.320 --> 00:01:08.080
+to all chinese listen to my talk right
+
+00:01:08.080 --> 00:01:10.960
+now feel free to check it out
+
+00:01:10.960 --> 00:01:14.320
+and this is a link to my github profile
+
+00:01:14.320 --> 00:01:17.280
+to my projects I'm involving one's me
+
+00:01:17.280 --> 00:01:18.240
+max which is
+
+00:01:18.240 --> 00:01:20.159
+I'm the author of a user-friendly
+
+00:01:20.159 --> 00:01:21.840
+full-featured image configuration
+
+00:01:21.840 --> 00:01:22.799
+distribution
+
+00:01:22.799 --> 00:01:25.040
+it is what I'm using right now as well
+
+00:01:25.040 --> 00:01:26.880
+as the imax application filter
+
+00:01:26.880 --> 00:01:29.119
+which I help to maintain along with the
+
+00:01:29.119 --> 00:01:30.400
+other other
+
+00:01:30.400 --> 00:01:33.040
+lazy cat which of course is today's
+
+00:01:33.040 --> 00:01:35.759
+topic
+
+00:01:35.759 --> 00:01:38.720
+so as you might all might have already
+
+00:01:38.720 --> 00:01:40.960
+noticed I'm currently using Emacs
+
+00:01:40.960 --> 00:01:43.600
+and oh and opening navigating closing
+
+00:01:43.600 --> 00:01:45.360
+all these websites that are rendered
+
+00:01:45.360 --> 00:01:46.159
+properly
+
+00:01:46.159 --> 00:01:49.200
+or within Emacs it's all thanks to the
+
+00:01:49.200 --> 00:01:51.840
+ef project
+
+00:01:51.840 --> 00:01:54.000
+so we're living in a society that's
+
+00:01:54.000 --> 00:01:55.920
+heavily dependent on the internet
+
+00:01:55.920 --> 00:01:59.520
+and multimedia it is unavoidable to run
+
+00:01:59.520 --> 00:02:01.200
+to some occasion that you need to
+
+00:02:01.200 --> 00:02:02.880
+open a fancy website that uses
+
+00:02:02.880 --> 00:02:04.799
+javascript and css
+
+00:02:04.799 --> 00:02:08.239
+or you need to watch some videos however
+
+00:02:08.239 --> 00:02:11.120
+due to the nature and history of Emacs
+
+00:02:11.120 --> 00:02:11.840
+it cannot
+
+00:02:11.840 --> 00:02:13.840
+render all these modern graphics
+
+00:02:13.840 --> 00:02:16.400
+effectively and efficiently
+
+00:02:16.400 --> 00:02:19.360
+Emacs is solely a text-based editing
+
+00:02:19.360 --> 00:02:20.400
+environment
+
+00:02:20.400 --> 00:02:23.520
+and I argue that this is not a bad thing
+
+00:02:23.520 --> 00:02:25.680
+in fact it is one of the reasons that me
+
+00:02:25.680 --> 00:02:27.760
+and I believe many of you as well
+
+00:02:27.760 --> 00:02:29.760
+are attracted to Emacs in the first
+
+00:02:29.760 --> 00:02:30.879
+place
+
+00:02:30.879 --> 00:02:33.760
+unfortunately this results in us having
+
+00:02:33.760 --> 00:02:35.680
+to open a dedicated web browser to
+
+00:02:35.680 --> 00:02:37.040
+browse the internet
+
+00:02:37.040 --> 00:02:38.879
+open a dedicated video player to watch
+
+00:02:38.879 --> 00:02:41.440
+some videos or a pdf render to read some
+
+00:02:41.440 --> 00:02:42.640
+documents
+
+00:02:42.640 --> 00:02:45.200
+so far ems cannot do all these tasks on
+
+00:02:45.200 --> 00:02:46.000
+its own
+
+00:02:46.000 --> 00:02:48.080
+but can only be achieved using other
+
+00:02:48.080 --> 00:02:51.519
+external applications
+
+00:02:51.519 --> 00:02:55.840
+so the other the author manatee lazy cat
+
+00:02:55.840 --> 00:02:58.640
+or lazy cat in short didn't want to use
+
+00:02:58.640 --> 00:03:00.560
+all these external applications
+
+00:03:00.560 --> 00:03:03.120
+he wanted to have an uninterrupted e-max
+
+00:03:03.120 --> 00:03:04.159
+experience
+
+00:03:04.159 --> 00:03:07.280
+he wanted to truly live in e-max
+
+00:03:07.280 --> 00:03:10.080
+however it would be a lot of work to
+
+00:03:10.080 --> 00:03:11.040
+build this
+
+00:03:11.040 --> 00:03:13.519
+modern application from scratch there's
+
+00:03:13.519 --> 00:03:16.239
+simply no time or research to do that
+
+00:03:16.239 --> 00:03:18.800
+so lazy car without utilizing existing
+
+00:03:18.800 --> 00:03:20.400
+applications
+
+00:03:20.400 --> 00:03:22.319
+and to try to make it collaborate with
+
+00:03:22.319 --> 00:03:24.959
+Emacs there are many solutions available
+
+00:03:24.959 --> 00:03:26.000
+one of it
+
+00:03:26.000 --> 00:03:28.560
+is the e-max x windows manager and I'm
+
+00:03:28.560 --> 00:03:30.159
+sure a lot of you already know that
+
+00:03:30.159 --> 00:03:33.360
+the exwm however it didn't work for him
+
+00:03:33.360 --> 00:03:35.200
+because although ux doubling opens the
+
+00:03:35.200 --> 00:03:37.440
+door to use other applications within
+
+00:03:37.440 --> 00:03:38.239
+Emacs
+
+00:03:38.239 --> 00:03:40.879
+it as a fine window manager cannot
+
+00:03:40.879 --> 00:03:41.519
+modify
+
+00:03:41.519 --> 00:03:43.920
+customize or extend other software from
+
+00:03:43.920 --> 00:03:45.040
+Emacs
+
+00:03:45.040 --> 00:03:46.799
+for example it cannot modify the
+
+00:03:46.799 --> 00:03:48.480
+behavior when you press a key in
+
+00:03:48.480 --> 00:03:49.599
+chromium or
+
+00:03:49.599 --> 00:03:52.159
+pdf viewer therefore it cannot utilize
+
+00:03:52.159 --> 00:03:54.000
+the rich emax ecosystem that's been
+
+00:03:54.000 --> 00:03:57.360
+growing for almost 40 years
+
+00:03:57.360 --> 00:04:00.720
+on the other hand in the ef browser so
+
+00:04:00.720 --> 00:04:03.760
+if you mx ef open
+
+00:04:03.760 --> 00:04:07.200
+browser with history you can see
+
+00:04:07.200 --> 00:04:09.840
+on the lower half of my screen a list of
+
+00:04:09.840 --> 00:04:11.920
+histories sorted by my personal
+
+00:04:11.920 --> 00:04:14.560
+most visited sites and you can search
+
+00:04:14.560 --> 00:04:16.560
+for a site that you've been
+
+00:04:16.560 --> 00:04:19.440
+into or search for some keyword and in a
+
+00:04:19.440 --> 00:04:21.840
+search engine
+
+00:04:21.840 --> 00:04:24.240
+so this is all achieved by utilizing the
+
+00:04:24.240 --> 00:04:25.919
+popular completion framework in the
+
+00:04:25.919 --> 00:04:29.280
+Emacs ecosystem
+
+00:04:29.280 --> 00:04:31.120
+so this car decided to develop a
+
+00:04:31.120 --> 00:04:33.680
+solution of its own in 2018
+
+00:04:33.680 --> 00:04:36.960
+namely the eaf project so I joined the
+
+00:04:36.960 --> 00:04:40.840
+development last year
+
+00:04:40.840 --> 00:04:44.000
+2019 ef is
+
+00:04:44.000 --> 00:04:47.880
+a highly customizable and extensible
+
+00:04:47.880 --> 00:04:49.759
+reapplication framework that extends
+
+00:04:49.759 --> 00:04:52.160
+imax to graphical capabilities using pi
+
+00:04:52.160 --> 00:04:57.840
+qd5 and it is not a window manager
+
+00:04:57.840 --> 00:05:02.479
+alright so in the readme you can see a
+
+00:05:02.479 --> 00:05:03.440
+list of gifs
+
+00:05:03.440 --> 00:05:05.600
+showcasing all the available ef
+
+00:05:05.600 --> 00:05:06.720
+applications
+
+00:05:06.720 --> 00:05:09.520
+a browser a markdown premier a video
+
+00:05:09.520 --> 00:05:10.960
+player
+
+00:05:10.960 --> 00:05:14.240
+a pdf viewer and more today I don't have
+
+00:05:14.240 --> 00:05:16.160
+enough time to demonstrate each one of
+
+00:05:16.160 --> 00:05:16.560
+them
+
+00:05:16.560 --> 00:05:18.720
+but I will select a couple applications
+
+00:05:18.720 --> 00:05:21.120
+to show you
+
+00:05:21.120 --> 00:05:24.240
+so since we are already using ef browser
+
+00:05:24.240 --> 00:05:27.840
+we'll start with this besides using the
+
+00:05:27.840 --> 00:05:29.600
+classic control n control p
+
+00:05:29.600 --> 00:05:32.000
+you can also use the vim style xjkl to
+
+00:05:32.000 --> 00:05:33.840
+move up or down
+
+00:05:33.840 --> 00:05:36.320
+also meta shift comma or g to the
+
+00:05:36.320 --> 00:05:37.280
+beginning of page
+
+00:05:37.280 --> 00:05:39.120
+when that shift period or capital g to
+
+00:05:39.120 --> 00:05:41.199
+the end of page
+
+00:05:41.199 --> 00:05:44.320
+limiting and surfing keys linear and
+
+00:05:44.320 --> 00:05:46.479
+surfing keys are popular keyboard-based
+
+00:05:46.479 --> 00:05:48.400
+browsing techniques in chrome
+
+00:05:48.400 --> 00:05:50.479
+and they've imported here as well you
+
+00:05:50.479 --> 00:05:52.720
+can press f to toggle markers pointing
+
+00:05:52.720 --> 00:05:53.039
+to
+
+00:05:53.039 --> 00:05:55.280
+all the links in the current page say I
+
+00:05:55.280 --> 00:05:56.960
+want to visit the wiki
+
+00:05:56.960 --> 00:05:59.680
+which comes very very handy when you
+
+00:05:59.680 --> 00:06:02.400
+want to configure ef to your liking
+
+00:06:02.400 --> 00:06:04.720
+so you see the marker on top of wiki is
+
+00:06:04.720 --> 00:06:05.440
+dd
+
+00:06:05.440 --> 00:06:08.479
+press dd and you enter and now
+
+00:06:08.479 --> 00:06:10.240
+you will navigate it to this link so you
+
+00:06:10.240 --> 00:06:13.840
+don't need to use your mouse at all
+
+00:06:13.840 --> 00:06:16.560
+so a full list of key bindings can be
+
+00:06:16.560 --> 00:06:17.680
+found when you
+
+00:06:17.680 --> 00:06:20.560
+control hm just as any other max major
+
+00:06:20.560 --> 00:06:21.199
+mode
+
+00:06:21.199 --> 00:06:22.960
+so you don't have to remember everything
+
+00:06:22.960 --> 00:06:25.600
+all the key bindings I said to you
+
+00:06:25.600 --> 00:06:28.560
+so this is a global binding application
+
+00:06:28.560 --> 00:06:30.960
+to every other ef application as well
+
+00:06:30.960 --> 00:06:34.319
+so you can find it under the week or or
+
+00:06:34.319 --> 00:06:36.720
+you can find it under the wiki in the
+
+00:06:36.720 --> 00:06:37.600
+key binding
+
+00:06:37.600 --> 00:06:40.639
+section so press f again and use
+
+00:06:40.639 --> 00:06:44.240
+ns press enter now you're in the key
+
+00:06:44.240 --> 00:06:45.600
+binding web page
+
+00:06:45.600 --> 00:06:47.520
+you can see all of the key buttons
+
+00:06:47.520 --> 00:06:49.280
+available in every
+
+00:06:49.280 --> 00:06:53.919
+es application and you can try them out
+
+00:06:53.919 --> 00:06:56.479
+and you can customize your key bindings
+
+00:06:56.479 --> 00:06:57.360
+using ef
+
+00:06:57.360 --> 00:07:00.240
+bank key you can customize control n as
+
+00:07:00.240 --> 00:07:02.960
+in the web page to
+
+00:07:02.960 --> 00:07:05.759
+to scroll up in the ef pdf viewer or you
+
+00:07:05.759 --> 00:07:06.639
+can unbind
+
+00:07:06.639 --> 00:07:09.599
+an existing binding using using yet bank
+
+00:07:09.599 --> 00:07:10.000
+key
+
+00:07:10.000 --> 00:07:14.840
+binder to new so it doesn't bind to
+
+00:07:14.840 --> 00:07:16.160
+anything
+
+00:07:16.160 --> 00:07:20.319
+okay so here comes the important part
+
+00:07:20.319 --> 00:07:22.479
+if you want to customize ef you should
+
+00:07:22.479 --> 00:07:25.440
+visit the customization page in the wiki
+
+00:07:25.440 --> 00:07:28.840
+so now I press meta b to go back in
+
+00:07:28.840 --> 00:07:30.240
+history and
+
+00:07:30.240 --> 00:07:32.960
+go to the customization package press f
+
+00:07:32.960 --> 00:07:34.080
+press a d
+
+00:07:34.080 --> 00:07:36.639
+enter and now we're in the customization
+
+00:07:36.639 --> 00:07:37.360
+page
+
+00:07:37.360 --> 00:07:39.280
+so the first customization option you
+
+00:07:39.280 --> 00:07:42.639
+see is dark mode
+
+00:07:42.639 --> 00:07:44.479
+let's say if you want to turn on the doc
+
+00:07:44.479 --> 00:07:46.720
+mode for ef browser
+
+00:07:46.720 --> 00:07:48.479
+and you don't want to use your mouse to
+
+00:07:48.479 --> 00:07:49.919
+do all this stuff
+
+00:07:49.919 --> 00:07:53.360
+you press c and you can select
+
+00:07:53.360 --> 00:07:55.840
+c to toggle the correct browsing you can
+
+00:07:55.840 --> 00:07:58.240
+see a lot of markers available
+
+00:07:58.240 --> 00:08:01.280
+pop um again but they're not they're not
+
+00:08:01.280 --> 00:08:02.720
+on top of links but instead of
+
+00:08:02.720 --> 00:08:03.599
+paragraphs
+
+00:08:03.599 --> 00:08:05.360
+you select the paragraph or your choice
+
+00:08:05.360 --> 00:08:06.639
+in this case you want
+
+00:08:06.639 --> 00:08:10.240
+ls which comes here
+
+00:08:10.240 --> 00:08:12.720
+and then you just you just move the
+
+00:08:12.720 --> 00:08:15.120
+cursor like what you always do
+
+00:08:15.120 --> 00:08:18.800
+in Emacs and now you select everything
+
+00:08:18.800 --> 00:08:23.280
+and use meta w to
+
+00:08:23.280 --> 00:08:25.680
+excuse me metadata to copy the taste the
+
+00:08:25.680 --> 00:08:26.479
+text
+
+00:08:26.479 --> 00:08:29.199
+now we made a shift column to evaluate
+
+00:08:29.199 --> 00:08:30.960
+what we just copied
+
+00:08:30.960 --> 00:08:35.120
+and set that to true and
+
+00:08:35.120 --> 00:08:38.320
+press r or f5 to refresh the page
+
+00:08:38.320 --> 00:08:42.159
+voila we have the dark mode enabled
+
+00:08:42.159 --> 00:08:44.880
+so there are well let's take a toggle
+
+00:08:44.880 --> 00:08:46.160
+back off for now
+
+00:08:46.160 --> 00:08:49.360
+now we made our shift column again
+
+00:08:49.360 --> 00:08:51.600
+and we find the the one we just used and
+
+00:08:51.600 --> 00:08:53.519
+change it back to false
+
+00:08:53.519 --> 00:08:56.880
+and refresh the page back in the light
+
+00:08:56.880 --> 00:08:59.360
+mode
+
+00:08:59.360 --> 00:09:02.160
+so there are many other customization
+
+00:09:02.160 --> 00:09:03.680
+options available you can either
+
+00:09:03.680 --> 00:09:05.920
+evaluate like what we just did or add it
+
+00:09:05.920 --> 00:09:08.000
+to your Emacs configuration file
+
+00:09:08.000 --> 00:09:11.680
+so in this wiki you can have you can
+
+00:09:11.680 --> 00:09:14.399
+you can make the ef browser to to
+
+00:09:14.399 --> 00:09:16.320
+continue where you left off
+
+00:09:16.320 --> 00:09:20.160
+similar to the chromium setting
+
+00:09:20.160 --> 00:09:22.800
+and you can make yes the default browser
+
+00:09:22.800 --> 00:09:23.839
+Emacs by
+
+00:09:23.839 --> 00:09:26.720
+aliasing aliasing browse web to your
+
+00:09:26.720 --> 00:09:27.680
+open browser
+
+00:09:27.680 --> 00:09:30.399
+or or set the browse url browser
+
+00:09:30.399 --> 00:09:31.200
+function to
+
+00:09:31.200 --> 00:09:33.519
+open browser there's just some tricks
+
+00:09:33.519 --> 00:09:34.480
+and there are also
+
+00:09:34.480 --> 00:09:37.920
+uh an experimental app blocker currently
+
+00:09:37.920 --> 00:09:41.680
+take in place and so therefore it can
+
+00:09:41.680 --> 00:09:44.720
+block some elements but not all so
+
+00:09:44.720 --> 00:09:47.279
+we we really encourage people to help us
+
+00:09:47.279 --> 00:09:48.240
+test out and
+
+00:09:48.240 --> 00:09:51.440
+add more conditions in
+
+00:09:51.440 --> 00:09:54.560
+so you can so the ef browser is able to
+
+00:09:54.560 --> 00:09:55.760
+download
+
+00:09:55.760 --> 00:09:57.680
+any files from the internet and it will
+
+00:09:57.680 --> 00:09:59.920
+be downloaded using
+
+00:09:59.920 --> 00:10:04.000
+a area too and
+
+00:10:04.000 --> 00:10:06.079
+you can also customize the ef browser
+
+00:10:06.079 --> 00:10:07.200
+download path
+
+00:10:07.200 --> 00:10:11.120
+using ef set so it's a function that we
+
+00:10:11.120 --> 00:10:14.399
+defined similar to set the normal set we
+
+00:10:14.399 --> 00:10:15.040
+know
+
+00:10:15.040 --> 00:10:16.480
+so by default the download file is
+
+00:10:16.480 --> 00:10:18.160
+stored in your home directory slash
+
+00:10:18.160 --> 00:10:19.600
+downloads
+
+00:10:19.600 --> 00:10:20.800
+and you can change that whenever you
+
+00:10:20.800 --> 00:10:22.720
+want you can also disable
+
+00:10:22.720 --> 00:10:26.079
+saving browsing history so remember
+
+00:10:26.079 --> 00:10:28.959
+when I press when I use mx you have open
+
+00:10:28.959 --> 00:10:30.480
+browser's history I see all the
+
+00:10:30.480 --> 00:10:32.079
+histories here but if you want more
+
+00:10:32.079 --> 00:10:33.680
+privacy you don't want that to be
+
+00:10:33.680 --> 00:10:35.360
+available at all you can turn it off
+
+00:10:35.360 --> 00:10:36.560
+easily with ef
+
+00:10:36.560 --> 00:10:38.720
+set queue and set that remember history
+
+00:10:38.720 --> 00:10:40.640
+to false
+
+00:10:40.640 --> 00:10:42.399
+you can also say your default search
+
+00:10:42.399 --> 00:10:43.839
+engine so
+
+00:10:43.839 --> 00:10:47.200
+so right now we have google although
+
+00:10:47.200 --> 00:10:50.480
+not not really good but google and also
+
+00:10:50.480 --> 00:10:53.600
+go which is a better search engine
+
+00:10:53.600 --> 00:10:57.360
+well uh yeah ethically better search
+
+00:10:57.360 --> 00:10:59.360
+engine
+
+00:10:59.360 --> 00:11:02.560
+so you can also configure
+
+00:11:02.560 --> 00:11:05.040
+the zoom so the default zoom of your
+
+00:11:05.040 --> 00:11:07.600
+browser is 1.0 so you can convert
+
+00:11:07.600 --> 00:11:10.000
+convert 3000 to 1.25 so you can so when
+
+00:11:10.000 --> 00:11:11.920
+you open any web page about it will be
+
+00:11:11.920 --> 00:11:14.079
+zoomed
+
+00:11:14.079 --> 00:11:17.360
+by default uh you can
+
+00:11:17.360 --> 00:11:20.399
+also disable javascript although I
+
+00:11:20.399 --> 00:11:22.240
+personally don't really suggest you to
+
+00:11:22.240 --> 00:11:23.440
+do because it will
+
+00:11:23.440 --> 00:11:26.240
+basically break a lot of our features
+
+00:11:26.240 --> 00:11:28.480
+because a lot of the browser browser
+
+00:11:28.480 --> 00:11:29.519
+related features
+
+00:11:29.519 --> 00:11:33.760
+must be implemented using javascript
+
+00:11:33.760 --> 00:11:35.440
+but yeah you can do it if you really
+
+00:11:35.440 --> 00:11:37.920
+want to and there also some
+
+00:11:37.920 --> 00:11:41.519
+customization on ef camera
+
+00:11:41.519 --> 00:11:47.760
+you can do as well yeah
+
+00:11:47.760 --> 00:11:52.399
+so uh let's move on to efpd viewer
+
+00:11:52.399 --> 00:11:56.079
+so now now let's open
+
+00:11:56.079 --> 00:11:59.440
+the pdf file using af
+
+00:11:59.440 --> 00:12:01.519
+so that's one something already here but
+
+00:12:01.519 --> 00:12:02.720
+let's open it here
+
+00:12:02.720 --> 00:12:06.079
+so yes open and
+
+00:12:06.079 --> 00:12:08.160
+select introduction to programming in
+
+00:12:08.160 --> 00:12:11.440
+e-max list
+
+00:12:11.440 --> 00:12:13.760
+uh I have it already open but it's okay
+
+00:12:13.760 --> 00:12:17.040
+so you have the file
+
+00:12:17.040 --> 00:12:20.160
+you have other files displayed
+
+00:12:20.160 --> 00:12:22.800
+you have all the pages display story yes
+
+00:12:22.800 --> 00:12:23.200
+and
+
+00:12:23.200 --> 00:12:27.040
+there are 273 pages in total but notice
+
+00:12:27.040 --> 00:12:29.279
+like how fast it is to browse
+
+00:12:29.279 --> 00:12:31.440
+all the pages it is blazingly fast
+
+00:12:31.440 --> 00:12:33.519
+that's all thanks to python and
+
+00:12:33.519 --> 00:12:37.040
+mupdf which you don't really get from
+
+00:12:37.040 --> 00:12:40.880
+Emacs list
+
+00:12:40.880 --> 00:12:43.600
+so let's say if I want to jump to page
+
+00:12:43.600 --> 00:12:44.079
+50
+
+00:12:44.079 --> 00:12:48.639
+we press p and enter 50.
+
+00:12:48.639 --> 00:12:53.279
+50 and here we are we are at page 50.
+
+00:12:53.279 --> 00:12:55.440
+you can look at the lower right to
+
+00:12:55.440 --> 00:12:58.880
+verify the page you're on
+
+00:12:58.880 --> 00:13:02.079
+and you can you can
+
+00:13:02.079 --> 00:13:05.120
+use I to toggle dark mode
+
+00:13:05.120 --> 00:13:07.839
+as expected and let's say you want to
+
+00:13:07.839 --> 00:13:08.240
+find
+
+00:13:08.240 --> 00:13:11.519
+table of contents so use ctrl s
+
+00:13:11.519 --> 00:13:15.680
+the image default binding for I search
+
+00:13:15.680 --> 00:13:19.360
+and search for a table of contents
+
+00:13:19.360 --> 00:13:21.680
+here we are it is highlighted for you
+
+00:13:21.680 --> 00:13:23.120
+and you can control s for more but
+
+00:13:23.120 --> 00:13:24.240
+there's only one or
+
+00:13:24.240 --> 00:13:27.200
+one match one other one you ctrl g to
+
+00:13:27.200 --> 00:13:28.800
+disable the highlight
+
+00:13:28.800 --> 00:13:30.880
+and you see a lot of options for you to
+
+00:13:30.880 --> 00:13:32.320
+go
+
+00:13:32.320 --> 00:13:35.040
+okay let's say if you want to go to the
+
+00:13:35.040 --> 00:13:36.240
+preface
+
+00:13:36.240 --> 00:13:39.519
+so that is you press f which which is
+
+00:13:39.519 --> 00:13:40.639
+also similar to
+
+00:13:40.639 --> 00:13:44.240
+eef browser you press f for vimeo
+
+00:13:44.240 --> 00:13:47.760
+and you see the marker now change to w
+
+00:13:47.760 --> 00:13:50.160
+press wn and then you can go to the
+
+00:13:50.160 --> 00:13:51.279
+prefix
+
+00:13:51.279 --> 00:13:54.320
+now we'll add a prefix
+
+00:13:54.320 --> 00:13:56.480
+so now you finish reading you want to
+
+00:13:56.480 --> 00:13:57.600
+save your progress
+
+00:13:57.600 --> 00:13:59.440
+no worries it is already saved for you
+
+00:13:59.440 --> 00:14:01.199
+by ef you can safely
+
+00:14:01.199 --> 00:14:04.240
+close the document using x
+
+00:14:04.240 --> 00:14:07.519
+and opening again af
+
+00:14:07.519 --> 00:14:10.560
+open and the file see your I
+
+00:14:10.560 --> 00:14:14.000
+preface again so you're right at where
+
+00:14:14.000 --> 00:14:16.560
+you let up left up
+
+00:14:16.560 --> 00:14:19.440
+you can also use mx org store link or
+
+00:14:19.440 --> 00:14:20.480
+ctrl cl
+
+00:14:20.480 --> 00:14:23.279
+which I prefer to if you want to save a
+
+00:14:23.279 --> 00:14:24.480
+particular page in
+
+00:14:24.480 --> 00:14:28.240
+a orgmo file so now
+
+00:14:28.240 --> 00:14:30.320
+I go back to my presentation now I don't
+
+00:14:30.320 --> 00:14:31.760
+need this anymore
+
+00:14:31.760 --> 00:14:35.600
+uh so you just control c control l
+
+00:14:35.600 --> 00:14:39.120
+or I think mx or insert link
+
+00:14:39.120 --> 00:14:41.040
+so you can find the file right here and
+
+00:14:41.040 --> 00:14:42.399
+you press enter
+
+00:14:42.399 --> 00:14:44.320
+and you press enter for the description
+
+00:14:44.320 --> 00:14:46.480
+again and now it's right here
+
+00:14:46.480 --> 00:14:50.720
+and ctrl c ctrl o to open it voila
+
+00:14:50.720 --> 00:14:54.000
+you're back right so
+
+00:14:54.000 --> 00:14:57.120
+let's now demonstrate the ef video
+
+00:14:57.120 --> 00:14:58.880
+player
+
+00:14:58.880 --> 00:15:02.639
+so mxef open if you use ef open whenever
+
+00:15:02.639 --> 00:15:03.279
+you want to
+
+00:15:03.279 --> 00:15:06.079
+open some file you use yet open browser
+
+00:15:06.079 --> 00:15:07.279
+if you want to use some
+
+00:15:07.279 --> 00:15:09.920
+actual application that's not really
+
+00:15:09.920 --> 00:15:11.199
+related to a file
+
+00:15:11.199 --> 00:15:14.800
+so you have open and select the video
+
+00:15:14.800 --> 00:15:15.600
+you want so
+
+00:15:15.600 --> 00:15:18.320
+video demo so I already have a video
+
+00:15:18.320 --> 00:15:19.040
+demo
+
+00:15:19.040 --> 00:15:21.839
+ready so because I recorded a video of
+
+00:15:21.839 --> 00:15:22.720
+the demo
+
+00:15:22.720 --> 00:15:26.000
+of the ef camera have a look so
+
+00:15:26.000 --> 00:15:28.079
+let's move to the beginning hello people
+
+00:15:28.079 --> 00:15:29.279
+from the future
+
+00:15:29.279 --> 00:15:32.399
+this is a demo of the ef video player
+
+00:15:32.399 --> 00:15:35.199
+that demos the ef camera feature
+
+00:15:35.199 --> 00:15:37.440
+so as you can see on the screen of me
+
+00:15:37.440 --> 00:15:38.639
+inside my camera
+
+00:15:38.639 --> 00:15:40.959
+and the screen is actually with all
+
+00:15:40.959 --> 00:15:42.880
+within Emacs
+
+00:15:42.880 --> 00:15:46.079
+right so and you can open this
+
+00:15:46.079 --> 00:15:49.839
+using here open camera
+
+00:15:49.839 --> 00:15:53.040
+and which I'm already into and you can
+
+00:15:53.040 --> 00:15:53.600
+press
+
+00:15:53.600 --> 00:15:56.720
+p to capture a photo
+
+00:15:56.720 --> 00:15:59.680
+so the photo is by default stored at
+
+00:15:59.680 --> 00:16:00.880
+your home slash
+
+00:16:00.880 --> 00:16:03.920
+downloads directory and you can modify
+
+00:16:03.920 --> 00:16:04.320
+it
+
+00:16:04.320 --> 00:16:07.839
+freely so if you go here and you can see
+
+00:16:07.839 --> 00:16:09.519
+the camera stored
+
+00:16:09.519 --> 00:16:13.759
+right here so why what I used here
+
+00:16:13.759 --> 00:16:16.240
+so you press space to pause what I used
+
+00:16:16.240 --> 00:16:17.120
+here is
+
+00:16:17.120 --> 00:16:20.320
+the year so ef open this entire so
+
+00:16:20.320 --> 00:16:22.959
+basically so in direct you you go to you
+
+00:16:22.959 --> 00:16:23.839
+you select
+
+00:16:23.839 --> 00:16:26.959
+the file that should be opened by
+
+00:16:26.959 --> 00:16:30.320
+eaf and I use that so it it detects that
+
+00:16:30.320 --> 00:16:32.720
+it wants to use the ef image viewer so
+
+00:16:32.720 --> 00:16:35.839
+I accidentally tested if image viewer
+
+00:16:35.839 --> 00:16:39.759
+before I noticed so that that that gives
+
+00:16:39.759 --> 00:16:40.240
+the
+
+00:16:40.240 --> 00:16:43.680
+image of the photo I just took
+
+00:16:43.680 --> 00:16:47.040
+using ef camera and as you can see you
+
+00:16:47.040 --> 00:16:47.360
+can
+
+00:16:47.360 --> 00:16:50.720
+I can use hl the bim button to navigate
+
+00:16:50.720 --> 00:16:51.600
+in the time
+
+00:16:51.600 --> 00:16:55.920
+timestamp in the video and I can use
+
+00:16:55.920 --> 00:17:02.320
+jk to to change the volumes of the video
+
+00:17:02.320 --> 00:17:05.520
+alright so now you've seen all the basic
+
+00:17:05.520 --> 00:17:06.160
+usages
+
+00:17:06.160 --> 00:17:08.720
+of the ef project it comes the question
+
+00:17:08.720 --> 00:17:11.600
+of what is the magic behind it
+
+00:17:11.600 --> 00:17:14.559
+all right let's open the hacking page in
+
+00:17:14.559 --> 00:17:15.919
+the wiki
+
+00:17:15.919 --> 00:17:20.400
+the design is laid out in a diagram here
+
+00:17:20.400 --> 00:17:25.120
+so and let's put it
+
+00:17:25.120 --> 00:17:27.839
+side by side along with my text so you
+
+00:17:27.839 --> 00:17:28.160
+can
+
+00:17:28.160 --> 00:17:32.320
+go we can follow through
+
+00:17:32.320 --> 00:17:36.080
+right okay let me
+
+00:17:36.080 --> 00:17:42.320
+sorry let me drink some water
+
+00:17:42.320 --> 00:17:46.000
+so this page in the wiki went into a lot
+
+00:17:46.000 --> 00:17:48.160
+of detail
+
+00:17:48.160 --> 00:17:49.520
+due to the time constraint I will just
+
+00:17:49.520 --> 00:17:51.679
+rephrase some of the ideas here so for
+
+00:17:51.679 --> 00:17:53.520
+anyone interested please have a look at
+
+00:17:53.520 --> 00:17:55.600
+the wiki yourself
+
+00:17:55.600 --> 00:17:58.160
+the easiest way to think about eaf is
+
+00:17:58.160 --> 00:17:58.720
+that
+
+00:17:58.720 --> 00:18:01.679
+the actual gui application is started in
+
+00:18:01.679 --> 00:18:02.960
+the background
+
+00:18:02.960 --> 00:18:04.960
+then the frame of the application is
+
+00:18:04.960 --> 00:18:07.120
+attached to the appropriate location on
+
+00:18:07.120 --> 00:18:07.679
+the
+
+00:18:07.679 --> 00:18:10.720
+Emacs window so
+
+00:18:10.720 --> 00:18:13.440
+you have linked qt5 with Emacs using
+
+00:18:13.440 --> 00:18:14.960
+list and python
+
+00:18:14.960 --> 00:18:17.120
+of the python site which is colored
+
+00:18:17.120 --> 00:18:18.640
+yellow in the image
+
+00:18:18.640 --> 00:18:20.559
+you have two graphics view and queue
+
+00:18:20.559 --> 00:18:22.960
+graphics scene objects
+
+00:18:22.960 --> 00:18:25.039
+these are used to simulate the e-max
+
+00:18:25.039 --> 00:18:26.640
+window buffer design
+
+00:18:26.640 --> 00:18:28.640
+where q graphics scene is similar to
+
+00:18:28.640 --> 00:18:29.840
+buffers in Emacs
+
+00:18:29.840 --> 00:18:31.840
+it controls the state and the content
+
+00:18:31.840 --> 00:18:34.240
+details of the application
+
+00:18:34.240 --> 00:18:39.039
+well q graphics view is similar to
+
+00:18:39.039 --> 00:18:41.200
+geographic view is similar to imax
+
+00:18:41.200 --> 00:18:43.200
+window it populates the buffer
+
+00:18:43.200 --> 00:18:45.919
+to graphics scene to the full program at
+
+00:18:45.919 --> 00:18:46.960
+the appropriate
+
+00:18:46.960 --> 00:18:50.320
+position whenever an ef mode buffer
+
+00:18:50.320 --> 00:18:57.679
+brings to a background
+
+00:18:57.679 --> 00:18:59.679
+whenever an ef mode buffer brings to the
+
+00:18:59.679 --> 00:19:00.880
+foreground sorry
+
+00:19:00.880 --> 00:19:02.559
+a queue graphics view instance is
+
+00:19:02.559 --> 00:19:05.120
+created and whenever the buffer goes to
+
+00:19:05.120 --> 00:19:06.080
+the background
+
+00:19:06.080 --> 00:19:08.000
+the q graphics view instance is then
+
+00:19:08.000 --> 00:19:09.120
+deleted
+
+00:19:09.120 --> 00:19:10.960
+while q graphics scene the actual
+
+00:19:10.960 --> 00:19:12.480
+process remains running in the
+
+00:19:12.480 --> 00:19:14.480
+background until the ef mode buffer is
+
+00:19:14.480 --> 00:19:16.000
+killed
+
+00:19:16.000 --> 00:19:18.320
+gpa compositing is used to ensure that q
+
+00:19:18.320 --> 00:19:19.440
+graphics view and
+
+00:19:19.440 --> 00:19:21.840
+graphics sync is synchronized real time
+
+00:19:21.840 --> 00:19:24.000
+using q windows set parent function
+
+00:19:24.000 --> 00:19:25.679
+the queue graphics view is attached to
+
+00:19:25.679 --> 00:19:27.840
+appropriate location on the e-max frame
+
+00:19:27.840 --> 00:19:30.640
+so that although great applications are
+
+00:19:30.640 --> 00:19:32.400
+not running within e-max
+
+00:19:32.400 --> 00:19:36.160
+they look as if they were
+
+00:19:36.160 --> 00:19:39.039
+so when user types on the keyboard it is
+
+00:19:39.039 --> 00:19:41.039
+first received by the Emacs ef
+
+00:19:41.039 --> 00:19:43.520
+ef mode buffer and then it lifts sends
+
+00:19:43.520 --> 00:19:45.360
+the event to google graphics sync using
+
+00:19:45.360 --> 00:19:46.240
+dbus
+
+00:19:46.240 --> 00:19:48.720
+when user clicks on the gui application
+
+00:19:48.720 --> 00:19:50.400
+it is received by the queue graphics
+
+00:19:50.400 --> 00:19:50.799
+view
+
+00:19:50.799 --> 00:19:53.280
+and process in python ellipse can
+
+00:19:53.280 --> 00:19:55.200
+communicate with python through dbus
+
+00:19:55.200 --> 00:19:59.200
+in other words in other words you can
+
+00:19:59.200 --> 00:20:01.360
+customize and extend Emacs not just
+
+00:20:01.360 --> 00:20:01.760
+using
+
+00:20:01.760 --> 00:20:04.480
+lisp and now you can use python this way
+
+00:20:04.480 --> 00:20:05.360
+one can leverage
+
+00:20:05.360 --> 00:20:07.039
+all the python properties like
+
+00:20:07.039 --> 00:20:09.600
+multi-threading or some other stuff
+
+00:20:09.600 --> 00:20:11.679
+the entire python ecosystem can be
+
+00:20:11.679 --> 00:20:13.520
+utilized as well
+
+00:20:13.520 --> 00:20:16.159
+such as the qt web engine that is the
+
+00:20:16.159 --> 00:20:16.960
+basis for
+
+00:20:16.960 --> 00:20:20.640
+our eef browser and pi mu pdf is the
+
+00:20:20.640 --> 00:20:23.360
+basis for the ef pdf viewer
+
+00:20:23.360 --> 00:20:25.840
+so this really opens the window to many
+
+00:20:25.840 --> 00:20:28.240
+many new possibilities to extend Emacs
+
+00:20:28.240 --> 00:20:32.720
+using eaf
+
+00:20:32.720 --> 00:20:36.080
+all right back here we are always
+
+00:20:36.080 --> 00:20:37.760
+looking for people to join the
+
+00:20:37.760 --> 00:20:39.679
+development there are many many
+
+00:20:39.679 --> 00:20:42.720
+more work that needs to be done like
+
+00:20:42.720 --> 00:20:44.640
+such as testing and debug if there are
+
+00:20:44.640 --> 00:20:46.640
+more linux distros and window managers
+
+00:20:46.640 --> 00:20:47.760
+such as i3
+
+00:20:47.760 --> 00:20:51.200
+and stuff I mean you can also add new ef
+
+00:20:51.200 --> 00:20:52.080
+applications
+
+00:20:52.080 --> 00:20:54.240
+or debug and enhance existing af
+
+00:20:54.240 --> 00:20:55.440
+applications
+
+00:20:55.440 --> 00:20:58.000
+or you can port ef to native wayland
+
+00:20:58.000 --> 00:21:00.240
+which I just discussed with the
+
+00:21:00.240 --> 00:21:03.840
+the ems whip kit author uh a kill
+
+00:21:03.840 --> 00:21:07.919
+akira tile and she he told me that like
+
+00:21:07.919 --> 00:21:10.159
+really like it must really yeah it
+
+00:21:10.159 --> 00:21:11.200
+doesn't really work
+
+00:21:11.200 --> 00:21:14.320
+um native villain because it uses
+
+00:21:14.320 --> 00:21:16.799
+x valence so it doesn't work on the pgdk
+
+00:21:16.799 --> 00:21:18.159
+port of Emacs
+
+00:21:18.159 --> 00:21:20.559
+so and we also need people to pour ef to
+
+00:21:20.559 --> 00:21:22.080
+non-free operating systems
+
+00:21:22.080 --> 00:21:25.600
+including windows and mac os
+
+00:21:25.600 --> 00:21:28.480
+and that's because like debug is a linux
+
+00:21:28.480 --> 00:21:30.080
+specific feature so it doesn't really
+
+00:21:30.080 --> 00:21:31.360
+work on other platform
+
+00:21:31.360 --> 00:21:33.039
+we need to change replace it with some
+
+00:21:33.039 --> 00:21:34.640
+alternative and
+
+00:21:34.640 --> 00:21:36.720
+geographic scene somehow doesn't really
+
+00:21:36.720 --> 00:21:38.640
+work on mac os
+
+00:21:38.640 --> 00:21:40.320
+and there are many other to-do lists
+
+00:21:40.320 --> 00:21:42.880
+available so please have a look
+
+00:21:42.880 --> 00:21:45.039
+if and see it's anything you want to
+
+00:21:45.039 --> 00:21:46.640
+work on
+
+00:21:46.640 --> 00:21:49.039
+all right so since this is a
+
+00:21:49.039 --> 00:21:51.120
+pre-recorded talk I won't be able to do
+
+00:21:51.120 --> 00:21:53.520
+the q a real time in the video
+
+00:21:53.520 --> 00:21:56.080
+however I will be around on the
+
+00:21:56.080 --> 00:21:57.200
+collaborate pad
+
+00:21:57.200 --> 00:22:00.559
+and the irc imax con you must come
+
+00:22:00.559 --> 00:22:01.360
+questions
+
+00:22:01.360 --> 00:22:04.240
+to answer any questions it pops up and
+
+00:22:04.240 --> 00:22:05.760
+you can also submit an issue
+
+00:22:05.760 --> 00:22:09.120
+on the repo and you can check the wiki
+
+00:22:09.120 --> 00:22:12.640
+for some other guides and tricks
+
+00:22:12.640 --> 00:22:15.039
+all right thank you guys and hopefully
+
+00:22:15.039 --> 00:22:16.000
+you find the
+
+00:22:16.000 --> 00:22:18.320
+this year project very interesting and
+
+00:22:18.320 --> 00:22:24.320
+enjoy the rest of Emacs com 2020