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Enable scaling for nyan-mode #49

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tusooa
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@tusooa tusooa commented Oct 2, 2020

This solves #37 and #48.

Under Emacs 27:

  • -animation -wavy image
  • -animation +wavy image
  • +animation -wavy image
  • +animation +wavy image

@tusooa
Add nyan scaling factor
b4dfc9d 
This allows nyan-mode to be displayed properly in Emacs 27.
It also enables user to make their nyan bar larger, which
is useful for HiDPI screens.
@tusooa
Use svg to draw rainbow
e7f3c41 
Scaling the rainbow xpm will result in the individual
rainbow segments being too wide. We use svg for
rainbow to make it higher, while maintaining the width
at 8px.
@tusooa
Revert to xpm if we do not have svg support
5c1ef11
@tusooa
Speed up nyan bar updating by pre-loading rainbow images
69d7edf
@bhankas
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bhankas commented Dec 14, 2021

After applying this patch I get below error:

Debugger entered--Lisp error: (void-function nyan-wavy-rainbow-ascent)
  nyan-wavy-rainbow-ascent(0 t)
  nyan-create-rainbow-frame-image(t (svg ((width . 8) (height . 15.0) (version . "1.1") (xmlns . "http://www.w3.org/2000/svg") (xmlns:xlink . "http://www.w3.org/1999/xlink") (stroke-width . 8)) (defs nil (linearGradient ((id . "gradient1") (x1 . 0) (x2 . 0) (y1 . 0) (y2 . 1)) (stop ((offset . "0.0%") (stop-color . "#522244"))) (stop ((offset . "7.142857142857142%") (stop-color . "#BF1119"))) (stop ((offset . "14.285714285714285%") (stop-color . "#F52A02"))) (stop ((offset . "21.428571428571427%") (stop-color . "#FC7800"))) (stop ((offset . "28.57142857142857%") (stop-color . "#FBA500"))) (stop ((offset . "35.714285714285715%") (stop-color . "#F0D300"))) (stop ((offset . "42.857142857142854%") (stop-color . "#B4BF00"))) (stop ((offset . "50.0%") (stop-color . "#4E9802"))) (stop ((offset . "57.14285714285714%") (stop-color . "#2CCB13"))) (stop ((offset . "64.28571428571429%") (stop-color . "#20D15C"))) (stop ((offset . "71.42857142857143%") (stop-color . "#0EA7CB"))) (stop ((offset . "78.57142857142857%") (stop-color . "#1E80F7"))) (stop ((offset . "85.71428571428571%") (stop-color . "#5247F7"))) (stop ((offset . "92.85714285714286%") (stop-color . "#5536D9"))) (stop ((offset . "100.0%") (stop-color . "#263498"))))) (rect ((width . 8) (height . 15.0) (x . 0) (y . 0) (x1 . 0) (x2 . 0) (y1 . 0) (y2 . 1) (fill . "url(#gradient1)") (stroke-width . 8)))) 0)
  nyan-create-rainbow-images(t)
  (defvar nyan-rainbow-animating-images (nyan-create-rainbow-images t))
  (nyan-mode)

For reference, I am using Emacs master (29.0.50, updated 13th Dec 2021). Can you please suggest what could be done to fix this? I am not well versed in elisp.

@tusooa
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tusooa commented Dec 14, 2021

After applying this patch I get below error:

Debugger entered--Lisp error: (void-function nyan-wavy-rainbow-ascent)
  nyan-wavy-rainbow-ascent(0 t)
  nyan-create-rainbow-frame-image(t (svg ((width . 8) (height . 15.0) (version . "1.1") (xmlns . "http://www.w3.org/2000/svg") (xmlns:xlink . "http://www.w3.org/1999/xlink") (stroke-width . 8)) (defs nil (linearGradient ((id . "gradient1") (x1 . 0) (x2 . 0) (y1 . 0) (y2 . 1)) (stop ((offset . "0.0%") (stop-color . "#522244"))) (stop ((offset . "7.142857142857142%") (stop-color . "#BF1119"))) (stop ((offset . "14.285714285714285%") (stop-color . "#F52A02"))) (stop ((offset . "21.428571428571427%") (stop-color . "#FC7800"))) (stop ((offset . "28.57142857142857%") (stop-color . "#FBA500"))) (stop ((offset . "35.714285714285715%") (stop-color . "#F0D300"))) (stop ((offset . "42.857142857142854%") (stop-color . "#B4BF00"))) (stop ((offset . "50.0%") (stop-color . "#4E9802"))) (stop ((offset . "57.14285714285714%") (stop-color . "#2CCB13"))) (stop ((offset . "64.28571428571429%") (stop-color . "#20D15C"))) (stop ((offset . "71.42857142857143%") (stop-color . "#0EA7CB"))) (stop ((offset . "78.57142857142857%") (stop-color . "#1E80F7"))) (stop ((offset . "85.71428571428571%") (stop-color . "#5247F7"))) (stop ((offset . "92.85714285714286%") (stop-color . "#5536D9"))) (stop ((offset . "100.0%") (stop-color . "#263498"))))) (rect ((width . 8) (height . 15.0) (x . 0) (y . 0) (x1 . 0) (x2 . 0) (y1 . 0) (y2 . 1) (fill . "url(#gradient1)") (stroke-width . 8)))) 0)
  nyan-create-rainbow-images(t)
  (defvar nyan-rainbow-animating-images (nyan-create-rainbow-images t))
  (nyan-mode)

For reference, I am using Emacs master (29.0.50, updated 13th Dec 2021). Can you please suggest what could be done to fix this? I am not well versed in elisp.

Maybe move (defun nyan-wavy-rainbow-ascent ...) block to before the function nyan-create-rainbow-frame-image.

@tusooa
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tusooa commented Dec 14, 2021

Actually, I suspect this patch makes Emacs 27 freeze after opening for several days. I am currently actively using it.

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@tusooa @bhankas