racket/collects/mred/private/gdi.ss
2007-02-13 02:08:04 +00:00

281 lines
9.8 KiB
Scheme

(module gdi mzscheme
(require (lib "class.ss")
(lib "class100.ss")
(prefix wx: "kernel.ss")
"lock.ss"
"check.ss"
"wx.ss"
"mrtop.ss"
"mrcanvas.ss")
(provide register-collecting-blit
unregister-collecting-blit
bitmap-dc%
post-script-dc%
printer-dc%
get-window-text-extent
get-family-builtin-face
normal-control-font
small-control-font
tiny-control-font
view-control-font
menu-control-font)
(define register-collecting-blit
(case-lambda
[(canvas x y w h on off) (register-collecting-blit canvas x y w h on off 0 0 0 0)]
[(canvas x y w h on off on-x) (register-collecting-blit canvas x y w h on off on-x 0 0 0)]
[(canvas x y w h on off on-x on-y) (register-collecting-blit canvas x y w h on off on-x on-y 0 0)]
[(canvas x y w h on off on-x on-y off-x) (register-collecting-blit canvas x y w h on off on-x on-y off-x 0)]
[(canvas x y w h on off on-x on-y off-x off-y)
(check-instance 'register-collecting-blit canvas% 'canvas% #f canvas)
(wx:register-collecting-blit (mred->wx canvas) x y w h on off on-x on-y off-x off-y)]))
(define unregister-collecting-blit
(lambda (canvas)
(check-instance 'unregister-collecting-blit canvas% 'canvas% #f canvas)
(wx:unregister-collecting-blit (mred->wx canvas))))
(define bitmap-dc%
(class100 wx:bitmap-dc% ([bitmap #f])
(inherit set-bitmap)
(sequence
(super-init)
(when bitmap
(set-bitmap bitmap)))))
(define-syntax check-page-active
(syntax-rules ()
[(_ check-page-status (id . args) ...) (begin (check-one-page-active check-page-status id args) ...)]))
(define-syntax check-one-page-active
(syntax-rules ()
[(_ check-page-status id simple ... (arg ... [opt ...]))
(check-one-page-active
check-page-status id
simple ...
(arg ...)
(arg ... opt ...))]
[(_ check-page-status id (arg ...) ...)
(define/override id
(case-lambda
[(arg ...) (check-page-status 'id) (super id arg ...)]
...))]))
(define-local-member-name multiple-pages-ok?)
(define (doc+page-check-mixin % class-name)
(class %
(define status #f)
(define did-one-page? #f)
(define/public (multiple-pages-ok?) #t)
(define/override (start-doc s)
(when status
(raise-mismatch-error (who->name (list 'method class-name 'start-doc))
(case status
[(done)
"document has already been ended: "]
[else
"document has already been started: "])
this))
(set! status 'doc)
(super start-doc s))
(define/override (end-doc)
(unless (eq? status 'doc)
(raise-mismatch-error (who->name (list 'method class-name 'end-doc))
(case status
[(page)
"current page has not been ended: "]
[(done)
"document is already ended: "]
[(#f)
"document is not started: "])
this))
(set! status 'done)
(super end-doc))
(define/override (start-page)
(unless (eq? status 'doc)
(raise-mismatch-error (who->name (list 'method class-name 'start-page))
(if (eq? status 'page)
"current page has not been ended: "
"document is not started (use the `start-doc' method): ")
this))
(when did-one-page?
(unless (multiple-pages-ok?)
(raise-mismatch-error (who->name (list 'method class-name 'start-page))
"cannot create multiple pages for EPS output: "
this)))
(set! status 'page)
(set! did-one-page? #t)
(super start-page))
(define/override (end-page)
(unless (eq? status 'page)
(raise-mismatch-error (who->name (list 'method class-name 'end-page))
"no page is currently started: "
this))
(set! status 'doc)
(super end-page))
(define/private (check-page-status method-name)
(unless (eq? status 'page)
(raise-mismatch-error (who->name (list 'method class-name method-name))
"no page is currently started (use `start-doc' and `start-page' before drawing): "
this)))
(check-page-active
check-page-status
(draw-bitmap source dest-x dest-y [style [color [mask]]])
(draw-bitmap-section source dest-x dest-y src-x src-y src-width src-height [style [color [mask]]])
(set-text-foreground c)
(set-text-background c)
(set-brush b/c [style])
(set-pen p/c [width style])
(set-font f)
(set-background c)
(set-clipping-region r)
(set-clipping-rect x y w h)
(draw-polygon pts [x [y [fill]]])
(draw-lines pts [x [y]])
(draw-path path [x [y [fill]]])
(draw-ellipse x y w h)
(draw-arc x y w h s e)
(draw-text txt x y [combine? [offset [angle]]])
(draw-spline x1 y1 x2 y2 x3 y3)
(draw-rounded-rectangle x y w h [r])
(draw-rectangle x y w h)
(draw-point x y)
(draw-line x1 y1 x2 y2)
(clear))
(super-new)))
(define post-script-dc%
(class (doc+page-check-mixin wx:post-script-dc% 'post-script-dc%)
(init [interactive #t][parent #f][use-paper-bbox #f][as-eps #t])
(check-top-level-parent/false '(constructor post-script-dc) parent)
(define is-eps? (and as-eps #t))
(define/override (multiple-pages-ok?) (not is-eps?))
(as-entry
(lambda ()
(let ([p (and parent (mred->wx parent))])
(as-exit (lambda () (super-make-object interactive p use-paper-bbox as-eps))))))))
(define printer-dc%
(class100 (doc+page-check-mixin wx:printer-dc% 'printer-dc%) ([parent #f])
(sequence
(check-top-level-parent/false '(constructor printer-dc) parent)
(as-entry
(lambda ()
(let ([p (and parent (mred->wx parent))])
(as-exit (lambda () (super-init p)))))))))
(define get-window-text-extent
(let ([bm #f][dc #f])
(case-lambda
[(string font)
(check-string 'get-window-text-extent string)
(check-instance 'get-window-text-extent wx:font% 'font% #f font)
(unless bm
(set! bm (make-object wx:bitmap% 2 2))
(set! dc (make-object wx:bitmap-dc%))
(send dc set-bitmap bm))
(unless (send bm ok?)
(error 'get-window-text-extent "couldn't allocate sizing bitmap"))
(let-values ([(w h d a) (send dc get-text-extent string font)])
(values (inexact->exact w) (inexact->exact h)))])))
(define x-has-xft? 'unknown)
(define mswin-system #f)
(define mswin-default #f)
(define (look-for-font name)
(if (ormap (lambda (n) (string-ci=? name n)) (wx:get-face-list))
name
"MS San Serif"))
(define (get-family-builtin-face family)
(unless (memq family '(default decorative roman script swiss modern system symbol))
(raise-type-error 'get-family-builtin-face "family symbol" family))
(case (system-type)
[(unix)
;; Detect Xft by looking for a font with a space in front of its name:
(when (eq? x-has-xft? 'unknown)
(set! x-has-xft? (ormap (lambda (s) (regexp-match #rx"^ " s)) (wx:get-face-list))))
(if x-has-xft?
(case family
[(system) " Sans"]
[(default) " Sans"]
[(roman) " Serif"]
[(decorative) " Nimbus Sans L"]
[(modern) " Monospace"]
[(swiss) " Nimbus Sans L"]
[(script) " URW Chancery L"]
[(symbol) " Standard Symbols L,Nimbus Sans L"])
(case family
[(system) "-b&h-lucida"]
[(default) "-b&h-lucida"]
[(roman) "-adobe-times"]
[(decorative) "-adobe-helvetica"]
[(modern) "-adobe-courier"]
[(swiss) "-b&h-lucida"]
[(script) "-itc-zapfchancery"]
[(symbol) "-adobe-symbol"]))]
[(windows)
(case family
[(system)
(unless mswin-system
(set! mswin-system (look-for-font "Tahoma")))
mswin-system]
[(default)
(unless mswin-default
(set! mswin-default (look-for-font "Microsoft Sans Serif")))
mswin-default]
[(default) "MS Sans Serif"]
[(roman) "Times New Roman"]
[(decorative) "Arial"]
[(modern) "Courier New"]
[(swiss) "Arial"]
[(script) "Arial"]
[(symbol) "Symbol"])]
[(macos)
(case family
[(system) "systemfont"]
[(default) "applicationfont"]
[(roman) "Times"]
[(decorative) "Geneva"]
[(modern) "Monaco"]
[(swiss) "Helvetica"]
[(script) "Zaph Chancery"]
[(symbol) "Symbol"])]
[(macosx)
(case family
[(system) "systemfont"]
[(default) "applicationfont"]
[(roman) "Times"]
[(decorative) "Arial"]
[(modern) "Courier New"]
[(swiss) "Helvetica"]
[(script) "Apple Chancery"]
[(symbol) "Symbol"])]))
(define small-delta (case (system-type)
[(windows) 0]
[(macosx) 2]
[else 1]))
(define normal-control-font (make-object wx:font% (wx:get-control-font-size) 'system))
(define small-control-font (make-object wx:font% (- (wx:get-control-font-size) small-delta) 'system))
(define tiny-control-font (make-object wx:font% (- (wx:get-control-font-size) 2 small-delta) 'system))
(define view-control-font (if (eq? 'macosx (system-type))
(make-object wx:font% (- (wx:get-control-font-size) 1) 'system)
normal-control-font))
(define menu-control-font (if (eq? 'macosx (system-type))
(make-object wx:font% (+ (wx:get-control-font-size) 1) 'system)
normal-control-font)))