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Overview
| Comment: | Changed with-canvas-mode into call-with-canvas-in-mode |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
33bf93359307b97701634526a6b6212d |
| User & Date: | murphy 2010-10-22 02:35:02.000 |
Context
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2011-01-30
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| 23:39 | Setup script now allows feature no-library-checks to disable checks using find-library check-in: d704525ebe user: murphy tags: trunk | |
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2010-10-22
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| 02:35 | Changed with-canvas-mode into call-with-canvas-in-mode check-in: 33bf933593 user: murphy tags: trunk | |
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2010-10-20
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| 20:06 | Moved context+ initialization from the base module to the native module check-in: acecf54f4f user: murphy tags: trunk | |
Changes
Changes to api/primitives.wiki.
| ︙ | ︙ | |||
272 273 274 275 276 277 278 | <h3><a id="canvas-text-box"><code><nowiki>(canvas-text-box [canvas canvas?] [x integer?] [y integer?] [text string?]) → (values integer? integer? integer? integer?)</nowiki></code></a></h3> Computes the bounding box of the given text when drawn on the given canvas. Returns the minimum and maximum x and y coordinates. <h2>Vertices</h2> | | | | | 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 | <h3><a id="canvas-text-box"><code><nowiki>(canvas-text-box [canvas canvas?] [x integer?] [y integer?] [text string?]) → (values integer? integer? integer? integer?)</nowiki></code></a></h3> Computes the bounding box of the given text when drawn on the given canvas. Returns the minimum and maximum x and y coordinates. <h2>Vertices</h2> <h3><a id="call-with-canvas-in-mode"><code><nowiki>(call-with-canvas-in-mode [canvas canvas?] [mode symbol?] [proc (-> canvas? any)]) → any</nowiki></code></a></h3> Calls <code>proc</code> with the given canvas and ready to receive vertex data in the given mode. Returns whatever <code>proc</code> returns. Possible modes are * <code>'open-lines</code> * <code>'closed-lines</code> * <code>'fill</code> * <code>'clip</code> |
| ︙ | ︙ |
Changes to chicken/canvas-draw-primitives.scm.
| ︙ | ︙ | |||
15 16 17 18 19 20 21 | canvas-fill-mode canvas-fill-mode-set! canvas-interior-style canvas-interior-style-set! canvas-text! canvas-font canvas-font-set! canvas-text-alignment canvas-text-alignment-set! canvas-text-orientation canvas-text-orientation-set! canvas-font-dimensions canvas-text-size canvas-text-box | | | 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
canvas-fill-mode canvas-fill-mode-set!
canvas-interior-style canvas-interior-style-set!
canvas-text!
canvas-font canvas-font-set!
canvas-text-alignment canvas-text-alignment-set!
canvas-text-orientation canvas-text-orientation-set!
canvas-font-dimensions canvas-text-size canvas-text-box
call-with-canvas-in-mode canvas-path-set!
canvas-vertex!)
(import scheme chicken foreign data-structures srfi-4 canvas-draw-base)
;; {{{ Data types
(foreign-declare
"#include <cd.h>\n")
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| ︙ | ︙ | |||
646 647 648 649 650 651 652 |
(canvas-text-box/raw canvas x y text (location x0) (location x1) (location y0) (location y1))
(values x0 x1 y0 y1)))))
;; }}}
;; {{{ Vertex functions
| | | 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 |
(canvas-text-box/raw canvas x y text (location x0) (location x1) (location y0) (location y1))
(values x0 x1 y0 y1)))))
;; }}}
;; {{{ Vertex functions
(define call-with-canvas-in-mode
(letrec ([canvas-modes
(list
(cons
'open-lines
(foreign-value "CD_OPEN_LINES" int))
(cons
'closed-lines
|
| ︙ | ︙ | |||
674 675 676 677 678 679 680 | (cons 'path (foreign-value "CD_PATH" int)))] [canvas-begin (foreign-lambda void "cdCanvasBegin" nonnull-canvas int)] [canvas-end (foreign-lambda void "cdCanvasEnd" nonnull-canvas)]) | | | | 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 | (cons 'path (foreign-value "CD_PATH" int)))] [canvas-begin (foreign-lambda void "cdCanvasBegin" nonnull-canvas int)] [canvas-end (foreign-lambda void "cdCanvasEnd" nonnull-canvas)]) (lambda (canvas canvas-mode proc) (let ([canvas-mode (cond [(assq canvas-mode canvas-modes) => cdr] [else (error 'with-canvas-mode "unknown canvas mode" canvas-mode)])]) (dynamic-wind (cut canvas-begin canvas canvas-mode) (cut proc canvas) (cut canvas-end canvas)))))) (define canvas-path-set! (letrec ([path-actions (list (cons 'new |
| ︙ | ︙ |
Changes to racket/primitives.rkt.
| ︙ | ︙ | |||
455 456 457 458 459 460 461 |
;; {{{ Vertex functions
(define _canvas-mode
(_enum
'(fill open-lines closed-lines clip bezier region path)
_fixint))
| | | | | | 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 |
;; {{{ Vertex functions
(define _canvas-mode
(_enum
'(fill open-lines closed-lines clip bezier region path)
_fixint))
(define call-with-canvas-in-mode
(letrec ([canvas-begin/raw
(get-ffi-obj
"cdCanvasBegin" libcd
(_fun [canvas : _canvas] [canvas-mode : _canvas-mode] -> _void))]
[canvas-end/raw
(get-ffi-obj
"cdCanvasEnd" libcd
(_fun [canvas : _canvas] -> _void))])
(λ (canvas canvas-mode proc)
(dynamic-wind
(cut canvas-begin/raw canvas canvas-mode)
(cut proc canvas)
(cut canvas-end/raw canvas)))))
(define _path-action
(_enum
'(new move-to line-to arc curve-to close fill stroke fill+stroke clip)
_fixint))
(define canvas-path-set!
(get-ffi-obj
"cdCanvasPathSet" libcd
(_fun [canvas : _canvas] [path-action : _path-action] -> _void)))
(define canvas-vertex!
(get-ffi-obj
"cdfCanvasVertex" libcd
(_fun [canvas : _canvas] [x : _double*] [y : _double*] -> _void)))
(provide
call-with-canvas-in-mode canvas-path-set!
canvas-vertex!)
;; }}}
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