Center a dialog in Pharo 3.0 - user-interface

If I 'do it' in a Workspace in Pharo 3.0
self confirm: 'test'
then the dialog is modal but no way to make it centered. Is there a workaround?

You and do this but in more complex way.
First of all you can try to do something with Spec like:
(LabelModel new text: 'test') openDialogWithSpec centered
But here you also have to handle the result of a dialog separately and so on (defined during the setup of the model).

This behavior is by design. The dialog is not modal, it is modal to the workspace
you started it in. There are therefore two good locations for the dialog: close to the
workspace and close to the cursor position (hand). Center of the screen is not as good.
Pharo uses close to the cursor position.
If you take a look at the implementors of confirm: and follow up to
UITheme>>questionWithoutCancelIn: aThemedMorph text: aStringOrText title: aString
you can create something similar and use a variant of
Morph>>openModal:
using the center of the screen instead.

Related

Remove system menu buttons

The situation is simple. Is it possible somehow, with the usual means of the Win32 API, to leave only two buttons in the system menu (minimize and close)?
Visually, I want to achieve the following result:
But it only turns out like this:
Perhaps you can try to do a trick and replace the[?] button icon:

ruby shoes: create modal window

Is there an attribute to create a modal window e.g. one that has complete focus.
we cannot use confirm/alert etc. and i'm assuming i create a window/dialog, but its asynchronous and exits after creation?
i.e. something like
dialog :title => '', :modal=>true do
googled, been through all ruby manuals and no reference to modal/focus?
checked out the source code and had a look for modal/keep focus type parameters - couldn't find anything?
i've come across suggests for Ruby/Tk (similar type of stuff) where people have to wait in a loop for close events and exit. this seems a bit cumbersome?
any thoughts out there?
thanks
Ben
Not entirely sure what you are trying to do here. Are you trying to launch another window alongside the main window? That is well supported:
Shoes.app do
para 'first app'
button "launch second" do
Shoes.app width: 180, height: 60 do
para 'I am a second app!'
end
end
end
Although that is an entirely new window, so it might not be what you want. If you want an all focus window that is essentially part of the app and greys out the main application, then no that is not possible :( Created an issue for modals though.

Messagebox centered to parent Window / Form

I am trying to build my own HTA right now to act as a front end for some of my batch scripts. I would like to use a msgbox (or anything equivalent) that I can use to output any errors, clicking Ok will just get rid of the prompt.
Here is the code I have been using:
x=msgbox("Error text" ,48, "Error: Title")
I would preferably like the following conditions, to be able to use a custom icon, the box to center on X and Y to the parent window/form, and to allow me to define the text in the box and it's title.
If this is not possible then just a messagebox that can be centered on X and Y to the parent window would suffice.
Is there any way of doing this in VBScript?
Or should I look into doing an HTML/CSS version that would popup on the screen?
I don't know the answer to your first question, but whatever the answer is there must be necessarily limits to what a box message box that pops up outside of the HTML can do.
So for customization that includes icon, centering and anything else expressible in HTML/CSS, I think you should do HTML/CSS that pops up on the screen.
You might want to look at jqueryui or bootstrap to get you going faster so you don't have to start from scratch.
https://jqueryui.com/dialog/#modal-message
http://getbootstrap.com/javascript/#modals
They both use jquery underneath so if you aren't already using it, you'll pick up some more bytes in your initial download.

GTK - Don't highlight buttons on select / hover

I'm trying to write a kiosk GUI in ruby/gtk on ubuntu. I'm pretty fluent in ruby, but new to writing GUIs and not great with linux.
I'm using a touch screen, and am using our own images for buttons, e.g.
button_image = Gtk::Image.new(Gdk::Pixbuff.new "images/button_image.png")
#button = Gtk::Button.new
#button.add(button_image)
#button.set_relief(Gtk::RELIEF_NONE)
My issue is that when the buttons are pressed or remain selected (or hovered over, although this is less relevant with a touch screen), gtk shows fat, square borders around them. Obviously it's applying gtk's prelight / selected / active lighting to the buttons. I've tried changing the button properties in various ways, and also tryied hacking apart my theme, and while I can modify how the highlighting looks, I can't seem to completely get rid of it. Changing the color of the highlight via my theme is easy, but if I remove my setting there's still a default I can't get rid of.
Does anyone know if there's a way to stop it, or possibly make it transparent? Thanks in advance!
Sounds like you want to use exactly your image for the whole button, instead of putting an image inside the normal GtkButton - but still use all the normal behavior of the button.
The easiest way to do this is to just override the drawing. If you are on gtk2, connect to the "expose-event" signal, do your drawing there, and return true so that the default handler doesn't get run. If you are on gtk3, connect to the "draw" signal and do the same.
I tried meddling with the drawing as Federico suggested, but found that the most direct way to address this was instead to use an event box rather than a button. Event boxes accept clicks just like buttons, but don't respond to selecting, hovering, etc. In ruby, the code looks like this:
image = Gtk::Image.new("myfile.png")
event_box = Gtk::EventBox.new.add(image)
event_box.visible_window = false
event_box.signal_connect("button_press_event") do
puts "Clicked."
end
Most of this is exactly like a button; the *visible_window* method, obviously, keeps the event box from being visible under the button image.

How to design a linear GUI program

I'm making a simple Qt application. It has 4 screens/pages:
Start import
Select folder to import images to
Accept or reject each image in folder, and when no images left:
"No images left" and an OK button.
I can't figure out the best way to implement this. I started off with a QWidget, but this quickly got unmanageable.
Is a QWizard too constrained?
EDIT: Part of the problem with QWizard is it seems to always have "Back" and "Next" buttons. I don't want those as options in this program, so this leads me to believe that a wizard isn't exactly what I'm after.
I'm going to disagree slightly on using a QWizard here. It would be fairly easy to do, but in this case I think it might be easier to just use a QStackedWidget and swap the widget shown based on what you want the user to be able to do. This is likely what is done inside QWizard anyway, without some of the complication for running the buttons and moving back and forth. You also might want to take a look at the state machine stuff they're looking at adding soon, since you're application could so easily be split into states.
I think a QWizardPage is your best bet.
You can disable the 'back' on a QWizardPage by using setCommitPage(True) on it.
You'll also have to override nextId for the 'variable' amount of QWizardPages you want in between step 2 and 4.
here (basic) and here are examples of QWizards.
You can make QWizardPages for your screens and add them to a QWizard. With registerField() you can register fields to communicate between pages.
EDIT:
I didn't test this, but i guess you can control the button layout of QWizard with
setButtonLayout
Create a dialog with a "Start Import" button on top. When the user clicks this:
Populate a QFormLayout :
The layout should have a checkbox and the label is the name of the picture to import. I'm not sure of your requirements, but you could also display a thumbnail of the image.
The user just checks the images he wants.
Then at the bottom have a "Save..." button. When the user clicks this, a Save As dialog appears. You save all the checked images, discard the others.
If there are no images, change the "Save..." button text to "OK", and display a QLabel with the "No images left" string. You can switch between the QLabel and QFormLayout using a QStackedWidget.
Checkout this article on QFormLayout: http://doc.trolltech.com/qq/qq25-formlayout.html
Option: Get rid of the "Start Import" button. Have the app automatically populate the QFormLayout on startup (possibly in constructor if its fast enough).

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