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README.md
GTK::Simple
GTK::Simple is a set of simple GTK 3 bindings using
NativeCall. Only some GTK widgets are currently implemented. However, these are
enough to create a reasonable interactive GUI for an idiomatic Raku program.
The GTK Widgets in this distribution include the following:
Widget | Description
----------------- | -------------------------------------------------------------------
ActionBar | Group multiple buttons and arrange in 'left', 'middle', and 'right'
Button | A simple button with a label and a callback
Calendar | A calendar for selecting a date
CheckButton | A check button with a label
CheckMenuItem | A checkable menu item
ComboBoxText | A simple combo box
DrawingArea | A drawing area (requires the 'Cairo' module)
Entry | Allows for text to be provided by the user
FileChooserButton | A button that opens a file chooser dialog
Frame | A bin with a decorative frame and optional label
Grid | A table-like container for widgets for window design
Image | An image widget
Label | Adds a line of text
LevelBar | A bar that can used as a level indicator
LinkButton | Create buttons bound to a URL
ListBox | A vertical listbox where each row is selectable
MarkUpLabel | Adds text with GTK mark up (e.g. color and font manipulation)
Menu | A simple menu with a menu item label
MenuBar | A simple menu bar that contain one or more menus
MenuItem | A simple menu item that can have a sub menu
MenuToolButton | A menu tool button with a label or an icon
PlacesSidebar | Sidebar that displays frequently-used places in the file system
ProgressBar | Show progress via a filling bar
Scale | Allows for a number to be provided by the user
ScrolledWindow | Container for widgets needing scrolling, eg., multiline texts
RadioButton | A choice from multiple radio buttons
Spinner | Showing that something is happening
TextView | Adds multiple lines of text
ToggleButton | A toggle-able button
Toolbar | A tool bar that can contain one or more menu tool buttons
VBox, HBox | Widget containers which enable window layout design
Example
use GTK::Simple;
my $app = GTK::Simple::App.new( title => "Hello GTK!" );
$app.set-content(
GTK::Simple::VBox.new(
my $button = GTK::Simple::Button.new(label => "Hello World!"),
my $second = GTK::Simple::Button.new(label => "Goodbye!")
)
);
$app.border-width = 20;
$second.sensitive = False;
$button.clicked.tap({ .sensitive = False; $second.sensitive = True });
$second.clicked.tap({ $app.exit; });
$app.run;
Using :subs option
Another approach is to specify :subs on import. This provides subroutine aliases for the constructors
of all of the available GTK::Simple widgets, converted from CamelCase to kebab-case.
GTK::Simple::MenuToolButton becomes menu-tool-button, GTK::Simple::ProgressBar becomes progress-bar, etc.
The above example can be equivalently written as:
use GTK::Simple :subs;
my $app = app(title => "Hello GTK!");
$app.set-content(
v-box(
my $button1 = button(label => "Hello World"),
my $button2 = button(label => "Goodbye!")
)
);
# ...
Further examples
The first four examples were written as mini tutorials to show how the
system works:
