5b7bf69a13
Support GUI scaling in much the same way as on Windows, where
the OS setting ("org.gnome.desktop.interface.scaling-factor"
times "...text-scaling-factor") determines the scale that is
used for both graphics and GUI sizing.
As I understand it, a complete solution requires porting to
Gtk3. With Gtk2, the graphical part of a widget doesn't scale.
Text and image labels should scale correctly, though.
132 lines
4.7 KiB
Racket
132 lines
4.7 KiB
Racket
#lang racket/base
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(require racket/class
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ffi/unsafe
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"../../syntax.rkt"
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"item.rkt"
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(except-in "utils.rkt" _GSList)
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"types.rkt"
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"widget.rkt"
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"window.rkt"
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"pixbuf.rkt"
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"message.rkt"
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"../common/event.rkt"
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"../../lock.rkt")
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(provide
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(protect-out radio-box%))
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;; ----------------------------------------
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(define _GSList (_cpointer/null 'GSList))
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(define-gtk gtk_radio_button_new_with_mnemonic (_fun _GSList _string -> _GtkWidget))
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(define-gtk gtk_radio_button_new (_fun _GSList -> _GtkWidget))
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(define-gtk gtk_radio_button_get_group (_fun _GtkWidget -> _GSList))
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(define-gtk gtk_radio_button_set_group (_fun _GtkWidget _GSList -> _void))
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(define-gtk gtk_toggle_button_set_active (_fun _GtkWidget _gboolean -> _void))
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(define-gtk gtk_toggle_button_get_active (_fun _GtkWidget -> _gboolean))
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(define-gtk gtk_widget_is_focus (_fun _GtkWidget -> _gboolean))
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(define-gtk gtk_bin_get_child (_fun _GtkWidget -> _GtkWidget))
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(define-signal-handler connect-clicked "clicked"
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(_fun _GtkWidget -> _void)
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(lambda (gtk)
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(let ([wx (gtk->wx gtk)])
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(when wx
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(send wx queue-clicked)))))
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(defclass radio-box% item%
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(init parent cb label
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x y w h
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labels
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val
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style
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font)
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(inherit set-auto-size
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on-set-focus)
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(define gtk (as-gtk-allocation
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(if (memq 'horizontal style)
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(gtk_hbox_new #f 0)
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(gtk_vbox_new #f 0))))
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(define radio-gtks (for/list ([lbl (in-list labels)])
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(atomically
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(let ([radio-gtk (cond
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[(string? lbl)
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(gtk_radio_button_new_with_mnemonic #f (mnemonic-string lbl))]
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[else
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(let ([pixbuf (bitmap->pixbuf lbl (->screen 1.0))])
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(let ([radio-gtk (gtk_radio_button_new #f)]
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[image-gtk (gtk_image_new_from_pixbuf pixbuf)])
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(release-pixbuf pixbuf)
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(gtk_container_add radio-gtk image-gtk)
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(gtk_widget_show image-gtk)
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radio-gtk))])])
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(gtk_box_pack_start gtk radio-gtk #t #t 0)
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(install-control-font (gtk_bin_get_child radio-gtk) font)
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(gtk_widget_show radio-gtk)
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radio-gtk))))
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(for ([radio-gtk (in-list (cdr radio-gtks))])
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(let ([g (gtk_radio_button_get_group (car radio-gtks))])
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(gtk_radio_button_set_group radio-gtk g)))
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(define dummy-gtk #f)
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(super-new [parent parent]
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[gtk gtk]
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[extra-gtks radio-gtks]
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[callback cb]
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[no-show? (memq 'deleted style)])
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(set-auto-size)
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(for ([radio-gtk (in-list radio-gtks)])
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(connect-clicked radio-gtk)
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(connect-key-and-mouse radio-gtk)
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(connect-focus radio-gtk))
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(define callback cb)
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(define/public (clicked)
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(callback this (new control-event%
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[event-type 'radio-box]
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[time-stamp (current-milliseconds)])))
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(define no-clicked? #f)
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(define/public (queue-clicked)
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(unless no-clicked?
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(queue-window-event this (lambda () (clicked)))))
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(define/public (button-focus i)
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(if (= i -1)
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(or (for/or ([radio-gtk (in-list radio-gtks)]
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[i (in-naturals)])
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(and (gtk_widget_is_focus radio-gtk)
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i))
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0)
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(gtk_widget_grab_focus (list-ref radio-gtks i))))
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(define/override (set-focus)
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(button-focus (max 0 (get-selection))))
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(define/public (set-selection i)
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(atomically
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(set! no-clicked? #t)
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(if (= i -1)
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(when (pair? radio-gtks)
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(unless dummy-gtk
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(set! dummy-gtk (as-gtk-allocation
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(gtk_radio_button_new
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(gtk_radio_button_get_group (car radio-gtks))))))
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(gtk_toggle_button_set_active dummy-gtk #t))
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(gtk_toggle_button_set_active (list-ref radio-gtks i) #t))
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(set! no-clicked? #f)))
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(define/public (get-selection)
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(or (for/or ([radio-gtk (in-list radio-gtks)]
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[i (in-naturals)])
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(and (gtk_toggle_button_get_active radio-gtk)
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i))
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-1))
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(define/public (enable-button i on?)
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(gtk_widget_set_sensitive (list-ref radio-gtks i) on?))
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(define count (length labels))
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(define/public (number) count))
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