Target a Gtk Cairo context #4181

alhirzel · 2020-03-10T19:53:24Z

alhirzel
Mar 10, 2020

(Perhaps I've just missed it)

We should document a way to have CairoMakie paint onto a GtkCanvas from Gtk.jl. Here is an example:

using Gtk, CairoMakie

c = @GtkCanvas()
win = GtkWindow(c, "Easel", 640, 480)

@guarded draw(c) do widget
	ctx = getgc(c)
	surf = cairo_surface(c)
	scene = heatmap(rand(50, 50))

	# ???
end
showall(win)

SimonDanisch · 2020-03-10T20:03:15Z

SimonDanisch
Mar 10, 2020
Maintainer

Can you also get the cairo context & surface?

0 replies

alhirzel · 2020-03-10T20:07:04Z

alhirzel
Mar 10, 2020
Author

They're available in Gtk, https://github.com/JuliaGraphics/Gtk.jl/blob/08d802bc8e0ce0c1925f70570539d417f2e910ba/src/cairo.jl#L4

0 replies

SimonDanisch · 2020-03-10T20:20:05Z

SimonDanisch
Mar 10, 2020
Maintainer

using Gtk, CairoMakie

c = @GtkCanvas()
win = GtkWindow(c, "Easel", 640, 480)

@guarded draw(c) do widget
    ctx = getgc(c)
    surf = Gtk.cairo_surface(c)
    scene = heatmap(rand(50, 50), resolution=(640, 480))
    screen = CairoMakie.CairoScreen(scene, surf, ctx, nothing)
    CairoMakie.cairo_draw(screen, scene)
end
showall(win)

0 replies

alhirzel · 2020-03-10T20:24:09Z

alhirzel
Mar 10, 2020
Author

Cool, I was almost there! This yields:

┌ Warning: Error in @guarded callback
└ @ Main ~/.julia/packages/Gtk/X3A4U/src/base.jl:90
ERROR: MethodError: no method matching getindex(::FreeTypeAbstraction.FTFont, ::Int64)
Stacktrace:
 [1] fontname(::FreeTypeAbstraction.FTFont) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:397
 [2] (::CairoMakie.var"#17#18"{Scene,Cairo.CairoContext,String,AbstractPlotting.TextureAtlas})(::Int64, ::GeometryTypes.Point{3,Float32}, ::Vec{2,Float32}, ::ColorTypes.RGBA{Float32}, ::FreeTypeAbstraction.FTFont, ::Quaternion{Float32}) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:479
 [3] broadcast_foreach(::Function, ::UnitRange{Int64}, ::Vararg{Any,N} where N) at /home/ahirzel/.julia/packages/AbstractPlotting/V6N2j/src/utilities/utilities.jl:176
 [4] draw_atomic(::Scene, ::CairoMakie.CairoScreen{Cairo.CairoSurfaceBase{UInt32}}, ::Text{...}) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:472
 [5] draw_plot(::Scene, ::CairoMakie.CairoScreen{Cairo.CairoSurfaceBase{UInt32}}, ::Text{...}) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:521
 [6] draw_plot(::Scene, ::CairoMakie.CairoScreen{Cairo.CairoSurfaceBase{UInt32}}, ::Annotations{...}) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:523 (repeats 2 times)
 [7] draw_plot(::CairoMakie.CairoScreen{Cairo.CairoSurfaceBase{UInt32}}, ::Scene) at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:531
 [8] cairo_draw at /home/ahirzel/.julia/packages/CairoMakie/3oiBK/src/CairoMakie.jl:544 [inlined]
 [9] (::var"#18#19"{GtkCanvas})(::GtkCanvas) at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/base.jl:88
 [10] draw(::GtkCanvas, ::Bool) at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/cairo.jl:86
 [11] notify_resize(::Ptr{GObject}, ::Ptr{Gtk.GdkRectangle}, ::GtkCanvas) at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/cairo.jl:63
 [12] (::Gtk.var"#237#238")() at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/events.jl:2
 [13] g_sigatom(::Any) at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/GLib/signals.jl:176
 [14] gtk_main() at /home/ahirzel/.julia/packages/Gtk/X3A4U/src/events.jl:1

0 replies

SimonDanisch · 2020-03-10T20:24:56Z

SimonDanisch
Mar 10, 2020
Maintainer

I just merged a fix for this! Checkout master and make sure to call ]up;resolve ...

0 replies

alhirzel · 2020-03-10T20:46:18Z

alhirzel
Mar 10, 2020
Author

Awesome! I wonder if there should be a utility function that passes along resize events to the scene? So that Gtk can manage the canvas size and CairoMakie can respond? Mockup...

drawonto(canvas, scene) = @guarded draw(canvas) do _
	resize!(scene, width(canvas), height(canvas))
	screen = CairoMakie.CairoScreen(scene, Gtk.cairo_surface(canvas), getgc(canvas), nothing)
	CairoMakie.cairo_draw(screen, scene)
end

usage

c = @GtkCanvas()
win = GtkWindow(c, "Easel", 640, 480)
drawonto(c, heatmap(rand(50, 50)))

0 replies

asinghvi17 · 2020-03-11T12:07:44Z

asinghvi17
Mar 11, 2020
Collaborator

You'd need a way to update (a) the Scene's pixel area and (b) the context's pixel area.

(a) is as simple as resize!(scene, size), but I'm not sure about (b).

0 replies

asinghvi17 · 2020-04-21T16:52:01Z

asinghvi17
Apr 21, 2020
Collaborator

I just tried this out, and it works beautifully.

https://developer.gnome.org/gtk-tutorial/stable/x182.html could be useful for seeing which events to track and act on.

0 replies

sharpTrick · 2020-11-10T18:57:38Z

sharpTrick
Nov 10, 2020

I messed around with this a little. The following appears to be a good way to get the context's dynamic pixel area.

using Gtk, Makie, CairoMakie

c = @GtkCanvas()
win = GtkWindow(c, "Easel", 640, 480)

@guarded draw(c) do widget
    ctx = getgc(c)
    surf = Gtk.cairo_surface(c)
    scene = heatmap(rand(50, 50), resolution=(surf.width, surf.height))
    screen = CairoMakie.CairoScreen(scene, surf, ctx, nothing)
    CairoMakie.cairo_draw(screen, scene)
end

showall(win)

Obviously one would create the scene outside of draw(c) and simply call resize!(scene, size) inside the draw function.

0 replies

filchristou · 2021-11-04T17:44:16Z

filchristou
Nov 4, 2021

I 've been searching for this! Do you think that this can at some point land in the CairoMakie.jl , so you can directly illustrate static figures with such GtkWindows? Currently in REPL you must save in a specific format and open outside the julia kernel to see the figure.
It would be great to have a simple showGtk(CairoFigure) function that immeadiately pops up the figure !

0 replies

feanor12 · 2022-11-01T20:32:45Z

feanor12
Nov 1, 2022

I had a go at this and I came up with a small example.
Maybe, if I have time, I'll try to make a GtkMakieCanvas.jl or something similar.

using Gtk, Makie, CairoMakie

function createMakieCanvas(figure)
  c = @GtkCanvas()
  @guarded draw(c) do widget
    surf = Gtk.cairo_surface(c)
    scene = figure.scene
    resize!(scene, (surf.width,surf.height))
    config = CairoMakie.ScreenConfig(1.0,1.0,:good,true,true)
    screen = CairoMakie.Screen(scene, surf, config)
    CairoMakie.cairo_draw(screen, scene)
  end
  return c
end

win = GtkWindow("demo", 640, 480)
box = GtkBox(:v)
push!(win,box)
button = GtkButton("plot")
push!(box,button)
f = Figure()
ax = Axis(f[1,1])
c = createMakieCanvas(f)
push!(box,c)
set_gtk_property!(box,:expand,c,true)

function on_plot(w)
    empty!(ax)
    heatmap!(ax,rand(100,20))
    draw(c)
end
signal_connect(on_plot, button, "clicked")

showall(win)
while true
    sleep(1)
end

0 replies

tknopp · 2022-12-24T10:41:53Z

tknopp
Dec 24, 2022

@jkrumbiegel @SimonDanisch: Is there any reason why CairoMakie does not ship with Gtk Window integration for the REPL like for instance Winston.jl does it? The inconvenience to get a quick plot is right now the only reason to prefer other plotting tools for me at the moment.

0 replies

jkrumbiegel · 2022-12-24T10:47:30Z

jkrumbiegel
Dec 24, 2022
Maintainer

We could think about adding that as a weak dependency. So for people with GTK installed, that would give an additional way of showing cairomakie plots.

0 replies

tknopp · 2022-12-24T11:29:27Z

tknopp
Dec 24, 2022

What do you mean by weak dependency? JuliaLang/julia#47695? I have not looked at it yet but if that is the proposal I think this would be great. Just „using Gtk, CairoMakie“ and then have plots showing up.

0 replies

jkrumbiegel · 2022-12-24T12:09:59Z

jkrumbiegel
Dec 24, 2022
Maintainer

Yes exactly, a bit like Requires but with first class support and precompilation.

0 replies

tknopp · 2022-12-30T15:25:55Z

tknopp
Dec 30, 2022

I just tried this example:
https://github.com/MakieOrg/Makie.jl/blob/master/CairoMakie/README.md#using-cairomakie-with-gtkjl
which seem to be broken:

┌ Warning: Error in @guarded callback
│   exception =
│    MethodError: no method matching CairoMakie.Screen(::Scene, ::Cairo.CairoSurfaceBase{UInt32}, ::Cairo.CairoContext, ::Nothing)
│    Closest candidates are:
│      CairoMakie.Screen(::Scene; screen_config...) at ~/.julia/packages/CairoMakie/ihglX/src/screen.jl:239
│      CairoMakie.Screen(::Scene, ::CairoMakie.ScreenConfig) at ~/.julia/packages/CairoMakie/ihglX/src/screen.jl:244
│      CairoMakie.Screen(::Scene, ::CairoMakie.ScreenConfig, ::Cairo.CairoSurface) at ~/.julia/packages/CairoMakie/ihglX/src/screen.jl:270
│      ...
│    Stacktrace:
│     [1] macro expansion
│       @ ./REPL[4]:5 [inlined]
│     [2] (::var"#1#2"{GtkCanvas, Figure})(#unused#::GtkCanvas)
│       @ Main ~/.julia/dev/Gtk/src/base.jl:112
│     [3] draw(widget::GtkCanvas, immediate::Bool)
│       @ Gtk ~/.julia/dev/Gtk/src/cairo.jl:86
│     [4] notify_resize(#unused#::Ptr{GObject}, size::Ptr{Gtk.GdkRectangle}, widget::GtkCanvas)
│       @ Gtk ~/.julia/dev/Gtk/src/cairo.jl:63
│     [5] (::Gtk.var"#253#254")()
│       @ Gtk ~/.julia/dev/Gtk/src/events.jl:2
│     [6] g_sigatom(f::Any)
│       @ Gtk.GLib ~/.julia/dev/Gtk/src/GLib/signals.jl:176
│     [7] gtk_main()
│       @ Gtk ~/.julia/dev/Gtk/src/events.jl:1
└ @ Main ~/.julia/dev/Gtk/src/base.jl:114

0 replies

00krishna · 2023-01-06T04:40:23Z

00krishna
Jan 6, 2023

I can confirm that I am encountering the same error message as @tknopp when running the GTK and Makie code from the README. My stacktrace is the same as Tknopp's as well. I am running Julia 1.8.3 on Ubuntu 20.04, and I also get a popup application window that is completely blank--no controls visible.

0 replies

feanor12 · 2023-01-07T18:31:59Z

feanor12
Jan 7, 2023

By replacing drawonto with

function drawonto(canvas, figure)
  @guarded draw(canvas) do _
    scene = figure.scene
    resize!(scene, Gtk.width(canvas), Gtk.height(canvas))
    config = CairoMakie.ScreenConfig(1.0,1.0,:good,true,true)
    screen = CairoMakie.Screen(scene, config, Gtk.cairo_surface(canvas))
    CairoMakie.cairo_draw(screen, scene)
  end
end

I got a working example.

0 replies

tknopp · 2023-01-07T18:49:16Z

tknopp
Jan 7, 2023

See #2537

0 replies

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Target a Gtk Cairo context #4181

{{title}}

Replies: 19 comments

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

{{title}}

{{title}}

{{title}}

{{title}}

{{editor}}'s edit

{{editor}}'s edit

{{title}}

{{title}}

Select a reply

Target a Gtk Cairo context #4181

Replies: 19 comments

SimonDanisch Mar 10, 2020 Maintainer

alhirzel Mar 10, 2020 Author

SimonDanisch Mar 10, 2020 Maintainer

alhirzel Mar 10, 2020 Author

SimonDanisch Mar 10, 2020 Maintainer

alhirzel Mar 10, 2020 Author

asinghvi17 Mar 11, 2020 Collaborator

asinghvi17 Apr 21, 2020 Collaborator

jkrumbiegel Dec 24, 2022 Maintainer

jkrumbiegel Dec 24, 2022 Maintainer

SimonDanisch
Mar 10, 2020
Maintainer

alhirzel
Mar 10, 2020
Author

SimonDanisch
Mar 10, 2020
Maintainer

alhirzel
Mar 10, 2020
Author

SimonDanisch
Mar 10, 2020
Maintainer

alhirzel
Mar 10, 2020
Author

asinghvi17
Mar 11, 2020
Collaborator

asinghvi17
Apr 21, 2020
Collaborator

jkrumbiegel
Dec 24, 2022
Maintainer

jkrumbiegel
Dec 24, 2022
Maintainer