Need help with Glyph API and Python

HugoJ · June 26, 2021, 1:52pm

I’m beginning with scripting in Python and Glyph API.
I would like to code a script to know how many glyphs had specific layer color.
I don’t know how to code the equivalent of “Check for each glyph in the font, if has the Layer color “Light Green” and return a list of them.”

For the moment I just have this little code

for glyph in font.glyphs:
	if Layer.color == 4:
		print(str(glyph.name))
	else:
		pass

GeorgSeifert · June 26, 2021, 2:07pm

colorCount = 0
for glyph in font.glyphs:
	if glyph.color == 4:
		colorCount += 1
		print(glyph.name)
print("There are %d glyphs with color 4" % colorCount)

HugoJ · June 26, 2021, 2:26pm

Thanks Georg !
Just an additional question, how can I get the total number of glyphs in my file ?

colorCount = 0
glyphsCount = ???

for glyph in font.glyphs:
	for layer in glyph.layers :
		if layer.color == 4:
			colorCount += 1
			#print(glyph.name)
print("%d" % colorCount + "/" + "%d" % glyphsCount)

GeorgSeifert · June 26, 2021, 2:41pm

print(len(Font.glyphs))

HugoJ · June 26, 2021, 3:14pm

There is a way to indicate to count only master layers?
I found this is the API :

# for master layers, use ID of masters
layer = font.glyphs['a'].layers[font.masters[0].id]

But it doesn’t seem to work here.

font = Glyphs.font
colorCount_1 = 0
glyphsCount = len(Font.glyphs)

#Red Layer Label : Redrawing
for glyph in font.glyphs:
	for layer in glyph.layers :
		if layer.color == 0:
			colorCount_1 += 1
			#print(glyph.name)
print("Redrawing : " + "%d" % colorCount_1 + "/" + "%d" % glyphsCount)

HugoJ · June 26, 2021, 9:42pm

I found a solution after many hours of fails

Replace

for layer in glyph.layers :

by

x=-1	
for glyph in font.glyphs:
	layer = font.glyphs[x].layers[0]
	x += 1

HugoJ · June 26, 2021, 9:51pm

Now I have a small script to know the progress of each of my masters.
Next step is to integrate this in a Palette Plugin.

GeorgSeifert · June 27, 2021, 8:57am

You can write that like this:

for glyph in font.glyphs:
    layer = glyph.layers[0]
    …

But to get to all master layers, do this:

for master in font.masters:
    colorCount = 0
    for glyph in font.glyphs:
        layer = glyph.layers[master.id]
        if layer.color == 4: # add on of the color constants
            colorCount += 1
    print("master %s: %d of %d done" % (master.name, colorCount, len(font.glyphs)))
    …

HugoJ · June 27, 2021, 10:08am

Thanks, this will clean a lot my code !
I read the topic about Plugin Palette in GlyphsSDK, but I don’t know if my UI intention need to use Interface Builder or if it’s possible with only Vanilla?

This is what I would like to have for UI

Font-DashBoard-Palette

GeorgSeifert · June 27, 2021, 10:32am

You can do that with vanilla. But for either solution you will need a custom view class for the progress bar (don’t bother with the built-in progress bar. Just make one from scratch will be easier.)

But I see some problems with putting it in a sidebar panel:

the bars will not change a lot so you look at the same data most of the time.
I don’t see a good way to trigger an update when the layer color changes and computing it all the time is too slow.

HugoJ · June 27, 2021, 11:27am

I’m not sure to understand what you said about progress bar.

Maybe add a button to update layer color changes or if it’s possible to update data when the file is saved (Cmd+S) ?

mekkablue · June 27, 2021, 3:29pm

Good idea! Yes, that is possible. See about callback keys in the documentation. There is one called DOCUMENTWASSAVED: Glyphs.app Python Scripting API Documentation — Glyphs.app Python Scripting API 3.2 documentation

HugoJ · February 17, 2022, 4:06pm

Hi Georg,

I would like to finish this Plugin now that I am more comfortable with Python and GlyphAPI.
But just one thing, I don’t know how to draw shapes with Python (and without drawBot)

GeorgSeifert · February 17, 2022, 7:11pm

What kind of shapes?
Does this help? Drawing Shapes Using Bézier Paths

HugoJ · February 18, 2022, 8:52am

I’m not sure…
I would like to draw rectangle to create my own progress bar.

GeorgSeifert · February 18, 2022, 9:15am

You probably need to subclass NSView and implement like this:

def drawRect_(self, rect):
    frame = self.bounds
    border = NSBezierPath.bezierPathWithRoundedRect_xRadius_yRadius_(frame, 3, 3)
    NSColor.tertiaryLabelColor().set()
    border.fill()
    barRect = NSMakeRect(frame.origin.x, frame.origin.y, frame.size.width * self.percentage, frame.size.height)
    bar = NSBezierPath.bezierPathWithRect_(barRect)
    self.color.set()
    bar.fill()
    NSColor.gridColor().set()
    border.stroke()

def setPercentage_(self, percentage):
    self.percentage = percentage
    self.setNeedsDisplay_(True)

(I typed that in Safari, so it might not work out of the box. But you should get the point)

alexs · February 18, 2022, 10:50pm

Georg, can I ask, with NSView, is there any method for dragging NSPoints with the cursor? I have a similar idea of some custom UI elements for a plugin, except I’d like to control them directly with the mouse, which is a little beyond my knowledge so far.

FlorianPircher · February 18, 2022, 11:27pm

If you want a slider control, have a look at NSSlider:

https://developer.apple.com/documentation/appkit/nsslider

Here is a visual overview:

alexs · February 19, 2022, 5:41pm

Not quite, I’d like to control offcurves of a bezier segment as a UI element (remember, “curves” controller in Photoshop). For now, I’ve solved that with sliders, but it’s not as intuitive.

GeorgSeifert · February 19, 2022, 7:34pm

Can you show a screenshot/mockup?