no problem

here are some hints and tricks to get it working :)

I hope this sets you in the right direction

good luck

from mojo.canvas import Canvas
from mojo.drawingTools import *
import mojo.drawingTools as mojoDrawingTools
from vanilla import *
from mojo.events import addObserver,removeObserver
from defconAppKit.windows.baseWindow import BaseWindowController
import AppKit


class ExampleWindow(BaseWindowController):

    def __init__(self):
        self.size = 50
        self.offset = 0, 0
        
        self.w = Window((400, 400), minSize=(200, 200))
        self.w.slider = Slider((10, 5, -10, 22), value=self.size, callback=self.sliderCallback)
        self.w.canvas = Canvas((0, 30, -0, 400), canvasSize=(1000, 1000),delegate=self, hasHorizontalScroller=True, hasVerticalScroller=True)#,acceptsMouseMoved=True)
        # acceptsMouseMoved=True sounds useful, but it is an unexpected keyword?
        # ----->>>> 'acceptsMouseMoved' is a method, return True to receive mouseMoved callback in the delegate (see below)
        self.setUpBaseWindowBehavior()
        self.w.open()
        
        print help(mojoDrawingTools)
        # module docs link broken http://docs.python.org/library/mojo.drawingTools
        # ----->>>>> euh funny :)
        print help(Canvas)
        
        ## HELP
        ## if I use these observers, I can only get information about the mouse when clicking in a glyph window, 
        ## I Want the information when I click in the canvas I created
        ## If I don't use these observers and use the methods directly, I do get the event when clicking on the canvas, but it is NSEvent, the information for instance location is relative to this window, which is what I want.
        ## how can I get this inforation as python dict or tuples or lists? 
        addObserver(self, "_mouseMoved", "mouseMoved")
        addObserver(self, "_mouseDown", "mouseDown")
        # ----->>>>>
        # this object acts a delegate for the canvas object
        # every event can be redirected to this object from the canvas object
        # this will provide you info about events within the canvas object
        
        # obserers just observer a specific action and send a notification to a given method
        # < <<<<<-----

    def windowCloseCallback(self, sender):
        #when this window w is closed, remove the observer 
        removeObserver(self, "mouseMoved")
        removeObserver(self, "mouseDown")
        # super I do not know what it's for, but it is in the example
        # ------>>>>> you need this as the BaseWindowController also does stuff while closing the window
        super(ExampleWindow, self).windowCloseCallback(sender)
                
    def sliderCallback(self, sender):
        self.size = sender.get()
        self.w.canvas.update()
                
    def draw(self):
        # offset the canvas
        x, y = self.offset
        translate(x, y)
        #set scale of canvas
        scale(self.size*0.1)
        #print CurrentGlyph()
        if CurrentGlyph():
            #draw current glyph to canvas (will need to observe when current glyph changes, but this is just to test)
            drawGlyph(CurrentGlyph())
        
    def acceptsMouseMoved(self):
        return False
    
    # mouse down that is not from observer, gives NSEvent for click relative to window
    def mouseDown(self, event):
        # ----->>>> see https://developer.apple.com/documentation/appkit/nsevent?language=objc
        print type(event)
        view = self.w.canvas.getNSView()        
        print view.convertPoint_fromView_(event.locationInWindow(), None)
    
    # mouse down from observer give info as dict
    def _mouseDown(self, notification):
        print notification["event"]
        print notification["glyph"]    
        print notification["point"]

    # mouse moved that is not from observer, gives NSEvent for mouse relative to window        
    def mouseMoved(self, event):
        print event.locationInWindow()
    
    # mouse moved from observer give info as dict
    def _mouseMoved(self, notification):
        print notification
        
    def mouseDragged(self, event):
        # how to grab and drag the canvas? from sender I get information in an NSEvent, how can I access that information and do something useful with it?
        print 'drag?', event
        x, y = self.offset        
        self.offset = x + event.deltaX(), y - event.deltaY()
        self.w.canvas.update()

ExampleWindow()

– you can transform the canvas with a drawBot style api see http://doc.robofont.com/api/mojo/mojo-drawingtools/

scale(value) will do it

– acceptsMouseMoved is very intensive as the canvas would send notifications whenever the mouse has moved, instead of the sequence mouseDown mouseDrag mouseUp but you will need mouseMoved to

– you will need to check for the notifications: “glyphWindowWillOpen” and “glyphWindowWillClose” and “currentGlyphChanged” to be able to make such a panning panel

– each glyph window has a glyph view, and a handy method is _getMousePosition(nsEventObj) now private, but I can open that in next versions… this is converting the nsevent mouse positions to glyph space coordinates.

I guess from here you should be able to make the puzzle :)

other wise ask

enjoy!

he Josh

could you provide a real example?
it should take the metrics of the first component, in your example agrave=a+grave@top the agrave should have the same metrics as a

thanks

Hi Josh

This was reased by fontTools, an internal package to read and write binary fonts.

see the discussion over here https://github.com/fonttools/fonttools/issues/767

this will be resolved in the next update

thanks

Hi Josh

The metrics settings in the font info panel are always related to the units per em value. If you did not change the value of units per em then the line space will increase.

The ascender and descender value should match up with the units per em value, depending your design off course.

good luck!

As far is I understand this example, this will run forever until a traceback is raised.

This seems to work fine with an htmlView inside RoboFont.

Good luck

Could you send me the UFO file? If you wish I have a look at it

There is a somewhere (I guess in the font info) a non ascii character, as Ben mentions