Can not update sizes and positions of views in a manager

[sineatos]

I created a struct and implemented the Manager interface. More than one View is created in a func Layout(g *gocui.Gui) error by g.SetView, and when I execute MainLoop(), they can show in terminal.

Here is my problem: I set these Views' size and position in Layout which are proportional to terminal size by using g.SetView, and when I execute MainLoop, only the first View appears in Layout can update the size and position when I adjust the size of terminal, while the others are fixed.

This problem can be solved by managing only one View in a Manager, then create a lot of Manager. But I want to use a Manager to update sizes and positions of these Views when I adjust the terminal. Is it a bug or something I make wrong?

[whereswaldon]

It might be easier to give you an answer if you could provide a short example of the code that you're having trouble with. I'm not sure that I understand what's happening based on your description.

[sineatos]

I created a new struct named ChatBox, and implemented the Manager interface. The code is showed as follow:

package cui

import (
    "github.com/jroimartin/gocui"
)

// ChatBox is A widget with a dialog box named "Dialog", a user list named "Chatters" and a input box
type ChatBox struct {
}

// Layout 
func (m *ChatBox) Layout(g *gocui.Gui) error {

    maxX, maxY := g.Size()
    termSize := &Size{W: maxX, H: maxY}

    // init DialogBox
    leftTop1 := DialogBoxLeftTop
    rate1 := DialogBoxRate
    vc1 := GetRectWithLP(leftTop1, termSize, rate1)
    v1, err := g.SetView(ViewNameDialogBox, vc1.LT.X, vc1.LT.Y, vc1.RD.X, vc1.RD.Y)
    if err != gocui.ErrUnknownView {
        return err
    }
    v1.Title = TitleDialogBox

    // init UserList
    leftTop2 := UserListLeftTop
    rate2 := UserListRate
    vc2 := GetRectWithLP(leftTop2, termSize, rate2)
    v2, err := g.SetView(ViewNameUserList, vc2.LT.X, vc2.LT.Y, vc2.RD.X, vc2.RD.Y)
    if err != gocui.ErrUnknownView {
        return err
    }
    v2.Title = TitleUserList

    // init InputBox
    leftTop3 := InputBoxLeftTop
    rate3 := InputBoxInfoRate
    vc3 := GetRectWithLP(leftTop3, termSize, rate3)
    v3, err := g.SetView(ViewNameInputBox, vc3.LT.X, vc3.LT.Y, vc3.RD.X, vc3.RD.Y)
    if err != gocui.ErrUnknownView {
        return err
    }
    v3.Title = TitleInputBox

    return nil
}

I set Views in Layout, and the order of setting is DialogBox->UserList->InputBox. The GetRectWithLP is used to get the position and size of View according to the current size of terminal.

---

Here is an example I met.

First, I used go run main.go to start my code, and the terminal was showed as follow:

Then I resized the terminal and made it become larger than before, and the termial was showed as follow:

The red frames I marked in picture ("Chatters","Please ...") were fixed on the original positions while "Dialog" was resize when I resized terminal.

In my opinion, UserList and InputBox should become larger when I resized terminal because they are set in Layout with DialogBox, however they didn't.

[whereswaldon]

This appears to be a bug in GetRectWithLP, rather than a bug in gocui. gocui does not ever manage the size or position of a View automatically. You are always responsible for performing resize and relocation. It seems that your function is correctly resizing when you provide it with the details of the Dialog box, but not the other views.