390 lines
10 KiB
Scheme
390 lines
10 KiB
Scheme
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;; --- widget functions ---
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(define (help-maybe-symbol->string obj)
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(if (symbol? obj)
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(symbol->string obj)
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(if (string? obj)
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obj
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(error "no valide operand" help-maybe-symbol->string))))
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(define (help-arglist-symbol->string arg-list)
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(letrec ((loop
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(lambda (new-list old-list)
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(if (null? old-list)
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;should be save without (reverse list)
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new-list
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(loop (cons (help-maybe-symbol->string (car old-list))
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(cons (cdar old-list)
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new-list))
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(cddr old-list))))))
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(loop '() arg-list)))
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(define (destroy-widget widget)
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(if (get-free widget)
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(error "widget is already destroyed" destroy-widget)
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(%destroy-widget (widget-Xwidget widget))))
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(import-lambda-definition %destroy-widget (XWidget)
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"scxt_Destroy_Widget")
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(define create-shell
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(lambda (app-name app-class parent display . args)
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(if (get-free parent)
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(error "free widget" create-shell)
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(make-widget
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(%create-shell (help-maybe-symbol->string app-name)
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(help-maybe-symbol->string app-class)
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(widget-Xwidget parent)
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(display-Xdisplay display)
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(help-arglist-symbol->string arg-list))))))
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(import-lambda-definition %create-shell ()
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"scxt_Create_Shell")
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(define create-widget
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(lambda args
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(apply int-create-widget #f args)))
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(define create-managed-widget
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(lambda args
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(apply int-create-widget #t args)))
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;; abstraction of create-widget(s) create-managed-widget(s)...
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(define int-create-widget
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(lambda (managed? . args)
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(let* ((arg-list-length (length args))
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(arg-list-even? (even? arg-list-length))
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(num-args (if arg-list-even?
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(/ (- arg-list-length 2) 2)
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(/ (- arg-list-length 1) 2)))
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(real-arg-list (if arg-list-even?
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(cddr args)
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(cdddr args)))
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(widget-name (if arg-list-even)
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; this fun has to be implemented...
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(%class-name (car args))
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(if (symbol? (car args))
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(symbol->string (car args))
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(car args)))
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(widget-class (if arg-list-even?
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(widgetClass-XwidgetClass (car args))
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(widgetClass-XwidgetClass (cadr args))))
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(parent (if arg-list-even?
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(widget-Xwidget (cadr args))
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(widget-Xwidget (caddr args))))
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(new-widget (%create-widget widget-name widget-class parent
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real-arg-list num-args
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managed?)))
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(make-widget new-widget))))
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(import-lambda-definition %create-widget (String, XWidgetClass, XWidget,
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args, Cardinal, flag)
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"scxt_Create_Widget")
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(define (realize-widget widget)
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(if (get-free widget)
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(error "wrong widget" realize-widget)
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(%realize-widget (widget-Xwidget widget))))
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(import-lambda-definition %realize-widget (XWidget)
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"sctx_Realize_Widget")
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(define (unrealize-widget widget)
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(if (get-free widget)
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(error "wrong widget" unrealize-widget)
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(%unrealize-widget (widget-Xwidget widget))))
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(import-lambda-definition %unrealize-widget (XWidget)
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"sctx_Unrealize_Widget")
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(define (widget-realized? widget)
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(if (get-free widget)
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(error "wrong widget" widget-realized?)
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(%widget-realized? (widget-Xwidget widget))))
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(import-lambda-definition %widget-realized? (XWidget)
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"sctx_Widget_Realized_P")
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;; Attention! I don't know if the use of the finalizer in make-display
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;; is correct.
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(define (widget-display widget)
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(if (get-free widget)
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(error "wrong widget" widget-display)
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(make-display (%widget-display (widget-Xwidget widget)) #f)))
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(import-lambda-definition %widget-display (XWidget)
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"sctx_Widget_Display")
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;; Returns the parent widget...
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(define (widget-parent widget)
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(if (get-free widget)
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(error "wrong widget" widget-parent)
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(%widget-parent (widget-Xwidget widget))))
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(import-lambda-definition %widget-parent (Xwidget)
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"scxt_Widget_Parent")
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;; Returns the name of the widget as a string.
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(define (widget-name widget)
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(if (get-free widget)
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(error "wrong widget" widget-name)
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(%widget-parent (widget-Xwidget widget))))
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(import-lambda-definition %widget-name (Xwidget)
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"scxt_Widget_Name")
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;; Returns the window associated with the widget
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(define (widget->window widget)
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(if (get-free widget)
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(error "wrong widget" widget->window)
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(%widget->window (widget-Xwidget widget))))
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(import-lambda-definition %widget->window (Xwidget)
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"scxt_Widget_To_Window")
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;; (define (widget-window widget)) ?????
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(define (widget-compsite? widget)
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(if (get-free widget)
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(error "freed widget" widget-composite?)
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(%widget-composite? (widget-Xwidget widget))))
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(import-lambda-definition %widget-composite? (Xwidget)
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"scxt_Widget_Composite_P")
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;; internal function:
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(define (help-wlist-get-free widget-list)
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(letrec ((loop
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(lambda (tsil)
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(cond
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((null? tsil) #f)
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((get-free (car tsil)) #t)
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(else
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(loop (cdr tsil)))))))
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(loop widget-list)))
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;; int. function:
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(define (help-wlist-widget-Xwidget widget-list)
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(letrec ((loop
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(lambda (new-list old-list)
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(if (null? old-list)
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new-list
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(loop (cons (widget-Xwidget (car old-list)) new-list)
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(cdr old-list))))))
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(loop '() widget-list)))
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(define magage-children
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(lambda widget-list
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(if (help-wlist-get-free widget-list)
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(error "free widget" manage-children)
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(%manage-children (help-wlist-widget-Xwidget widget-list)
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(length widget-list)))))
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(import-lambda-definition %manage-children (Xwidget-list list-length)
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"scxt_Manage_Children")
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(define (manage-child widget)
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(manage-children widget))
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(define (unmanage-child widget)
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(unmanage-children widget))
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(define unmanage-children
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(lambda widget-list
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(if (help-wlist-get-free widget-list)
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(error "free widget" unmanage-children)
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(%unmanage-children (help-wlist-widget-Xwidget widget-list)
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(length widget-list)))))
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(import-lambda-definition %unmanage-children (Xwidget-list list-length)
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"scxt_Unmanage_Children")
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(define (widget-managed? widget)
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(if (get-free widget)
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(error "free widget" widget-managed?)
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(%widget-managed? (widget-Xwidget widget))))
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(import-lambda-definition %widget-managed? (Xwidget)
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"scxt_Widget_Managed_P")
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(define (widget-class widget)
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(if (get-free widget)
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(error "free widget" widget-class)
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(%widget-class (widget-Xwidget widget))))
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(import-lambda-definition %widget-class (Xwidget)
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"scxt_Widget_Class")
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(define (widget-superclass widget)
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(if (get-free widget)
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(error "free widget" widget-superclass)
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(let ((res (%widget-superclass (widget-Xwidget widget))))
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(if res res 'none))))
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(import-lambda-definition %widget-superclass (Xwidget)
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"scxt_Widget_Superclass")
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;; TODO: class parameter: check neccessary?
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(define (widget-subclass? widget wclass)
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(if (get-free widget)
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(error "free widget" widget-subclass?)
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(%widget-subclass? (widget-Xwidget widget) (wclass-Xwclass wclass))))
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(imoport-lambda-definition %widget-subclass? (Xwidget Xwclass)
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"scxt_Widget_Subclass_P")
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(define (set-mapped-when-managed! widget managed?)
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(if (get-free widget)
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(error "free widget" set-mapped-when-managed!)
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(%set-mapped-when-managed! (widget-Xwidget widget) managed?)))
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(import-lambda-definition %set-mapped-when-managed! (Xwindget bool)
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"scxt_Set_Mapped_When_Managed")
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(define (map-widget widget)
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(if (get-free widget)
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(error "free widget" map-widget)
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(%map-widget (widget-Xwidget widget))))
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(import-lambda-definition %map-widget (Xwidget)
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"scxt_Map_Widget")
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(define (unmap-widget widget)
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(if (get-free widget)
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(error "free widget" unmap-widget)
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(%unmap-widget (widget-Xwidget widget))))
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(import-lambda-definition %unmap-widget (Xwidget)
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"scxt_Unmap_Widget")
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;; values consists of a widget and ressource arguments:
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;; (the 1,3,5,.. a name to be set and the 2, 4, 6, ... the corresponding value)
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(define set-values!
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(lambda values
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(let ((widget (car values))
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(args (help-arg-list-symbol->string (cdr values))))
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(if (get-free widget)
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(error "free widget" set-values!)
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(%set-values! (widget-Xwidget widget) args (/ (length args) 2))))))
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(import-lambda-definition %set-args (Xwidget arg-list num-args)
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"scxt_Set_Values")
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;; the args are the wanted ressource names...
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(define get-values
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(lambda values
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(let ((widget (car values))
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(args (map help-maybe-string->symbol (cdr values))))
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(if (get-free widget)
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(error "free widget" get-values)
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(%get-values (widget-Xwidget widget) args (length args))))))
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(import-lambda-definition %get-values (Xwidget arg-list num-args)
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"scxt_Get_Values")
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(define (widget-context widget)
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(if (get-free widget)
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(error "free widget" widget-context)
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(%widget-context (widget-Xwidget widget))))
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(import-lambda-definition %widget-context (Xwidget)
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"scxt_Widget_Context")
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(define (set-sensitive! widget sensitive?)
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(if (get-free widget)
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(error "free widget" set-sensitive!)
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(%set-sensitive! (widget-Xwidget widget) sensitive?)))
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(import-lambda-definition %set-sensitive! (Xwidget boolean)
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"scxt_Set_Sensitive")
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(define (widget-sensitive? widget)
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(if (get-free widget)
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(error "free widget" widget-sensitive?)
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(%widget-sensitive? (widget-Xwidget widget))))
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(import-lambda-definition %widget-sensitive? (Xwidget)
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"scxt_Widget_Sensitive_P")
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(define (window->widget window)
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(make-widget
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(%window->widget (window-Xwindow window)
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(display-Xdisplay (window-display window)))))
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(import-lambda-definition %window->widget (Xwindow Xdisplay)
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"scxt_Window_To_Widget")
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;; returns the widget with the specified name and which is a
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;; child of the root-widget. name is either a symbol or a string.
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;; If no widget is found, NULL will be returned.
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(define (name->widget root-widget name)
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(if (get-free root-widget)
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(error "free widget" name->widget)
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(make-widget
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(%name->widget (widget-Xwidget root-widget)
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(help-maybe-symbol->string name)))))
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(import-lambda-definition %name->widget (Xwidget string)
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"scxt_Name_To_Widget")
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;; returns a pair of integers, which represent the coordinates
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;; relative to it's root-widget.
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(define (widget-translate-coordinates widget x y)
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(if (get-free widget)
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(error "free widget" widget-translate-coordinates)
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(%widget-translate-coordinates (widget-Xwidget widget) x y)))
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(import-lambda-definition %widget-translate-coordinates (Xwidget int-x int-y)
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"scxt_Widget_Translate_Coordinates")
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