github.com/gtkool4/gallery

GTK4 Widget Gallery example

This program provides a view similar to The GTK-4.0 Widget Gallery page.

• It's also a running preview to test and choose your widgets.
• And code examples on how to use them.

Displays

Buttons

Entries

Containers

Windows

Missing widgets

• WindowControls : don't show
• EmojiChooser
• Menu
• PopOver
• MessageDialog
• PrintDialog (os dependent?)
• GLArea: Won't do here, too many deps. Will have a dedicated example.

Problems

• SearchBar
  • Cannot use (*SearchBar).ConnectEntry(SearchEntry)
    • cannot use variable of type *gtk.SearchEntry as gtk.Editabler: missing method Editable
    • example on the gnome repo
• AboutDialog
  • Panics when trying to SetLogo(Paintable)
• Switch
  • Changing Switch.Connect("state-set") to ConnectAfter breaks the callback (in CustomWidget).
• Dialog
  • Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
    • w.SetTransientFor(gapp.Win) : cannot use gapp.Win (variable of type *gtk.ApplicationWindow) as *gtk.Window
    • w.SetParent(gapp.Win) : cannot use gapp.Win (variable of type *gtk.ApplicationWindow) as gtk.Widgetter
• LockButton
  • can't unlock, maybe need a better gio.Permissioner (only found one usable)
• PixbufLoader
  • Would be nice to change the returns to be able to use as io.Writer (wrong type for method Write)
    • have func([]byte) error
    • want func([]byte) (n int, err error)
• MenuButton
  • missing callback args
  • using .Widget to prevent the naming conflict;
• FontButton
  • using .Widget to prevent the naming conflict
• TreeView
  • Using .Widget to prevent the naming conflict
  • When editing a cell: Gtk-CRITICAL :
    • gtk_css_node_insert_after: assertion 'previous_sibling == NULL || previous_sibling->parent == parent' failed
• IconView
  • Find why downloading data panics when called from newIconView.
• Cairo
  • Random crashes when cairo is used in the drawing area:

    gallery: ../cairo/src/cairo.c:523: cairo_destroy: Assertion `CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count)' failed.
    SIGABRT: abort
    PC=0x7f2595fbcd22 m=11 sigcode=18446744073709551610
    
    github.com/diamondburned/gotk4/pkg/gtk/v4._Cfunc_cairo_destroy(0x7f24d00093e0)
    	_cgo_gotypes.go:2980 +0x45 fp=0xc0000405c0 sp=0xc000040598 pc=0x7aed25
    github.com/diamondburned/gotk4/pkg/gtk/v4._gotk4_gtk4_DrawingAreaDrawFunc.func1.1(0xc000040620)
    	/github.com/diamondburned/gotk4/pkg@v0.0.0-20210919215506-2625db339437/gtk/v4/gtkdrawingarea.go:50 +0x53     fp=0xc0000405f8 sp=0xc0000405c0 pc=0x80cb13
    github.com/diamondburned/gotk4/pkg/gtk/v4._gotk4_gtk4_DrawingAreaDrawFunc.func1(0x178)
    	/github.com/diamondburned/gotk4/pkg@v0.0.0-20210919215506-2625db339437/gtk/v4/gtkdrawingarea.go:50 +0x19     fp=0xc000040610 sp=0xc0000405f8 pc=0x80ca99
    runtime.call16(0x0, 0xa26a78, 0x0, 0x0, 0x0, 0x0, 0xc0000406c0)