When customizing canvas size, the graph inputs output in the subgraph cannot be clicked

[vkerl]

The possible reason is that the click judgment in the drawButton function uses this.mouse, which I think should be using this.graph_ mouse

There is also an associated 'this. last_click_position' that needs to be modified

By doing so, he can succeed in his work

I would like to ask if this change is correct

thank you

fix code:

LGraphCanvas.prototype.processMouseDown = function(e) {
    ...
    this.last_click_position = [this.graph_mouse[0],this.graph_mouse[1]];
    ...
}
LGraphCanvas.prototype.drawButton = function( x,y,w,h, text, bgcolor, hovercolor, textcolor )
    {
        ...
        var pos = this.graph_mouse;
        var hover = LiteGraph.isInsideRectangle( pos[0], pos[1], x,yFix,w,h );
        pos = this.last_click_position;
        var clicked = pos && LiteGraph.isInsideRectangle( pos[0], pos[1], x,yFix,w,h );
        ...
    }

[jagenjo]

do a PR