mdw@git.distorted.org.uk Git - clg/blob - cairo/cairo.lisp

   1 ;; Common Lisp bindings for Cairo
   2 ;; Copyright 2005 Espen S. Johnsen <espen@users.sf.net>
   3 ;;
   4 ;; Permission is hereby granted, free of charge, to any person obtaining
   5 ;; a copy of this software and associated documentation files (the
   6 ;; "Software"), to deal in the Software without restriction, including
   7 ;; without limitation the rights to use, copy, modify, merge, publish,
   8 ;; distribute, sublicense, and/or sell copies of the Software, and to
   9 ;; permit persons to whom the Software is furnished to do so, subject to
  10 ;; the following conditions:
  11 ;;
  12 ;; The above copyright notice and this permission notice shall be
  13 ;; included in all copies or substantial portions of the Software.
  14 ;;
  15 ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16 ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17 ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  18 ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  19 ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  20 ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  21 ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 ;; $Id: cairo.lisp,v 1.8 2007-01-11 10:20:22 espen Exp $
  24
  25 (in-package "CAIRO")
  26
  27 (eval-when (:compile-toplevel :load-toplevel :execute)
  28   (define-enum-type surface-format :argb32 :rgb24 :a8 :a1)
  29   #?(pkg-exists-p "cairo" :atleast-version "1.2")
  30   (define-enum-type content :color :alpha :color-alpha)
  31   #?(pkg-exists-p "cairo" :atleast-version "1.2")
  32   (define-enum-type surface-type
  33     :image :pdf :ps :xlib :xcb :glitz :quartz :win32 :beos :directfb
  34     :svg :nquartz :os2)
  35
  36
  37   (define-enum-type status
  38     :success :no-memory :invalid-restore :invalid-pop-group
  39     :no-current-point :invalid-matrix :invalid-status :null-pointer
  40     :invalid-string :invalid-path-data :read-error :write-error
  41     :surface-finished :surface-type-mismatch :pattern-type-mismatch
  42     :invalid-content :invalid-format :invalid-visual :file-not-found
  43     :invalid-dash)
  44
  45   (define-enum-type fill-rule :winding :even-odd)
  46   (define-enum-type line-cap :butt :round :square)
  47   (define-enum-type line-join :miter :round :bevel)
  48   (define-enum-type font-slant :normal :itaic :oblique)
  49   (define-enum-type font-weight :normal :bold)
  50
  51   (define-enum-type operator
  52    :clear :source :over :in :out :atop :dest :dest-over
  53    :dest-in :dest-out :dest-atop :xor :add :saturate)
  54
  55   (define-enum-type antialias :default :none :gray :subpixel)
  56   (define-enum-type extend :none :repeat :reflect)
  57   (define-enum-type filter :fast :good :best :nearest :bilinear :gaussian)
  58   (define-enum-type subpixel-order :default :rgb :bgr :vrgb :vbgr)
  59   (define-enum-type hint-style :default :none :slight :medium :full)
  60   (define-enum-type hint-metrics :default :off :on)
  61
  62   (defclass glyph (struct)
  63     ((index
  64       :allocation :alien
  65       :initarg :index
  66       :accessor glyph-index
  67       :type unsigned-long)
  68      (x
  69       :allocation :alien
  70       :initarg :x
  71       :accessor glyph-x
  72       :type double-float)
  73      (y
  74       :allocation :alien
  75       :initarg :y
  76       :accessor glyph-y
  77       :type double-float))
  78     (:metaclass struct-class))
  79
  80   (defclass font-face (proxy)
  81     ()
  82     (:metaclass proxy-class)
  83     (:ref %font-face-reference)
  84     (:unref %font-face-destroy))
  85
  86   (defclass font-options (proxy)
  87     ((antialias
  88       :allocation :virtual
  89       :getter "font_options_get_antialias"
  90       :setter "font_options_set_antialias"
  91       :accessor font-options-antialias
  92       :type antialias)
  93      (subpixel-order
  94       :allocation :virtual
  95       :getter "font_options_get_subpixel_order"
  96       :setter "font_options_set_subpixel_order"
  97       :accessor font-options-subpixel-order
  98       :type subpixel-order)
  99      (hint-style
 100       :allocation :virtual
 101       :getter "font_options_get_hint_style"
 102       :setter "font_options_set_hint_style"
 103       :accessor font-options-hint-style
 104       :type hint-style)
 105      (hint-metrics
 106       :allocation :virtual
 107       :getter "font_options_get_hint_metrics"
 108       :setter "font_options_set_hint_metrics"
 109       :accessor font-options-hint-metrics
 110       :type hint-metrics))
 111     (:metaclass proxy-class)
 112     (:ref %font-options-reference)
 113     (:unref %font-options-destroy))
 114
 115   (defclass scaled-font (proxy)
 116     ()
 117     (:metaclass proxy-class)
 118     (:ref %scaled-font-reference)
 119     (:unref %scaled-font-destroy))
 120
 121   (defclass matrix (struct)
 122     ((xx :allocation :alien :initarg :xx :initform 1.0
 123          :accessor matrix-xx :type double-float)
 124      (yx :allocation :alien  :initarg :yx :initform 0.0
 125          :accessor matrix-yx :type double-float)
 126      (xy :allocation :alien  :initarg :xy :initform 1.0
 127          :accessor matrix-xy :type double-float)
 128      (yy :allocation :alien  :initarg :yy :initform 0.0
 129          :accessor matrix-yy :type double-float)
 130      (x0 :allocation :alien  :initarg :x0 :initform 0.0
 131          :accessor matrix-x0 :type double-float)
 132      (y0 :allocation :alien  :initarg :y0 :initform 0.0
 133          :accessor matrix-y0 :type double-float))
 134     (:metaclass struct-class))
 135
 136
 137   (defclass text-extents (struct)
 138     ((x-bearing :allocation :alien :reader text-extents-x-bearing :type double-float)
 139      (y-bearing :allocation :alien :reader text-extents-y-bearing :type double-float)
 140      (width :allocation :alien :reader text-extents-width :type double-float)
 141      (height :allocation :alien :reader text-extents-height :type double-float)
 142      (x-advance :allocation :alien :reader text-extents-x-advance :type double-float)
 143      (y-advance :allocation :alien :reader text-extents-y-advance :type double-float))
 144     (:metaclass struct-class))
 145
 146   (defclass pattern (proxy)
 147     ((extend
 148       :allocation :virtual
 149       :getter "cairo_pattern_get_extend"
 150       :setter "cairo_pattern_set_extend"
 151       :accessor pattern-extend
 152       :type extend)
 153      (filter
 154       :allocation :virtual
 155       :getter "cairo_pattern_get_filter"
 156       :setter "cairo_pattern_set_filter"
 157       :accessor pattern-filter
 158       :type filter)
 159      (matrix
 160       :allocation :virtual
 161       :getter "cairo_pattern_get_matrix"
 162       :setter "cairo_pattern_set_matrix"
 163       :accessor pattern-matrix
 164       :type matrix))
 165     (:metaclass proxy-class)
 166     (:ref %pattern-reference)
 167     (:unref %pattern-destroy))
 168
 169
 170   (defclass surface (proxy)
 171     (#?(pkg-exists-p "cairo" :atleast-version "1.2")
 172      (type
 173       :allocation :virtual
 174       :getter "cairo_surface_get_tyoe"
 175       :reader surface-type
 176       :type surface-type)
 177      #?(pkg-exists-p "cairo" :atleast-version "1.2")
 178      (content
 179       :allocation :virtual
 180       :getter "cairo_surface_get_content"
 181       :reader surface-content
 182       :type content))
 183     (:metaclass proxy-class)
 184     (:ref %surface-reference)
 185     (:unref %surface-destroy))
 186
 187   (defclass context (proxy)
 188     ((target
 189       :allocation :virtual
 190       :getter "cairo_get_target"
 191       :reader target
 192       :type surface)
 193      (source
 194       :allocation :virtual
 195       :getter "cairo_get_source"
 196       :setter "cairo_set_source"
 197       :accessor source
 198       :type pattern)
 199      (antialias
 200       :allocation :virtual
 201       :getter "cairo_get_antialias"
 202       :setter "cairo_set_antialias"
 203       :accessor antialias
 204       :type antialias)
 205      (tolerance
 206       :allocation :virtual
 207       :getter "cairo_get_tolerance"
 208       :setter "cairo_set_tolerance"
 209       :accessor tolerance
 210       :type double-float)
 211      (fill-rule
 212       :allocation :virtual
 213       :getter "cairo_get_fill_rule"
 214       :setter "cairo_set_fill_rule"
 215       :accessor fill-rule
 216       :type fill-rule)
 217      (line-width
 218       :allocation :virtual
 219       :getter "cairo_get_line_width"
 220       :setter "cairo_set_line_width"
 221       :accessor line-width
 222       :type double-float)
 223      (line-cap
 224       :allocation :virtual
 225       :getter "cairo_get_line_cap"
 226       :setter "cairo_set_line_cap"
 227       :accessor line-cap
 228       :type line-cap)
 229      (line-join
 230       :allocation :virtual
 231       :getter "cairo_get_line_join"
 232       :setter "cairo_set_line_join"
 233       :accessor line-join
 234       :type line-join)
 235      (miter-limit
 236       :allocation :virtual
 237       :getter "cairo_get_miter_limit"
 238       :setter "cairo_set_miter_limit"
 239       :accessor miter-limit
 240       :type double-float)
 241      (font-matrix
 242       :allocation :virtual
 243       :getter "cairo_get_font_matrix"
 244       :setter "cairo_set_font_matrix"
 245       :accessor font-matrix
 246       :type matrix)
 247      (font-options
 248       :allocation :virtual
 249       :getter "cairo_get_font_options"
 250       :setter "cairo_set_font_options"
 251       :accessor font-options
 252       :type font-options)
 253      (font-face
 254       :allocation :virtual
 255       :getter "cairo_get_font_face"
 256       :setter "cairo_set_font_face"
 257       :accessor font-face
 258       :type font-face)
 259      (operator
 260       :allocation :virtual
 261       :getter "cairo_get_operator"
 262       :setter "cairo_set_operator"
 263       :accessor operator
 264       :type operator)
 265      (matrix
 266       :allocation :virtual
 267       :getter matrix
 268       :setter "cairo_set_matrix"
 269       :writer (setf matrix)
 270       :type matrix)
 271      )
 272     (:metaclass proxy-class)
 273     (:ref %reference)
 274     (:unref %destroy))
 275
 276   (defclass image-surface (surface)
 277     ((width
 278       :allocation :virtual
 279       :getter "cairo_image_surface_get_width"
 280       :reader surface-width
 281       :type int)
 282      (height
 283       :allocation :virtual
 284       :getter "cairo_image_surface_get_height"
 285       :reader surface-height
 286       :type int))
 287     (:metaclass proxy-class)
 288     (:ref %surface-reference)
 289     (:unref %surface-destroy))
 290
 291
 292 ;;   (defclass path (proxy)
 293 ;;     ()
 294 ;;     (:metaclass proxy-class))
 295
 296 )
 297
 298
 299 ;;; Cairo context
 300
 301 (defbinding %reference () nil
 302   (location pointer))
 303
 304 (defbinding %destroy () nil
 305   (location pointer))
 306
 307 (defbinding (save-context "cairo_save") () nil
 308   (cr context))
 309
 310 (defbinding (restore-context "cairo_restore") () nil
 311   (cr context))
 312
 313 (defmacro with-context ((cr) &body body)
 314   (let ((context (make-symbol "CONTEXT")))
 315     `(let ((,context ,cr))
 316        (save-context ,context)
 317        (unwind-protect
 318            (progn ,@body)
 319          (restore-context ,context)))))
 320
 321 (defbinding status () status
 322   (cr context))
 323
 324 (defun ensure-color-component (component)
 325   (etypecase component
 326     (float component)
 327     (integer (/ component 256.0))))
 328
 329 (defbinding (set-source-color "cairo_set_source_rgba") (cr red green blue &optional (alpha 1.0)) nil
 330   (cr context)
 331   ((ensure-color-component red) double-float)
 332   ((ensure-color-component green) double-float)
 333   ((ensure-color-component blue) double-float)
 334   ((ensure-color-component alpha) double-float))
 335
 336 (defbinding set-source-surface (cr surface &optional (x 0.0) (y 0.0)) nil
 337   (cr context)
 338   (surface surface)
 339   (x double-float)
 340   (y double-float))
 341
 342 (defun set-source (cr source)
 343   (etypecase source
 344     (pattern (setf (source cr) source))
 345     (surface (set-source-surface cr source))
 346     (list (apply #'set-source-color cr source))
 347     (vector (apply #'set-source-color cr (coerce source 'list)))
 348     (null (set-source-color cr 0.0 0.0 0.0))))
 349
 350 (defbinding set-dash (cr dashes &optional (offset 0.0)) nil
 351   (cr context)
 352   (dashes (vector double-float))
 353   ((length dashes) int)
 354   (offset double-float))
 355
 356 (defbinding (paint "cairo_paint_with_alpha") (cr &optional (alpha 1.0)) nil
 357   (cr context)
 358   (alpha double-float))
 359
 360 (defbinding mask () nil
 361   (cr context)
 362   (pattern pattern))
 363
 364 (defbinding mask-surface () nil
 365   (cr context)
 366   (surface surface)
 367   (surface-x double-float)
 368   (surface-y double-float))
 369
 370 (defmacro defoperator (name &optional clip-p)
 371   (let ((iname (intern (format nil "%~A" name)))
 372         (pname (intern (format nil "%~A-PRESERVE" name))))
 373     `(progn
 374        (defbinding ,iname () nil
 375          (cr context))
 376        (defbinding ,pname () nil
 377          (cr context))
 378        (defun ,name (cr &optional preserve)
 379          (if preserve
 380              (,pname cr)
 381            (,iname cr)))
 382        ,(unless clip-p
 383           (let ((tname (intern (format nil "IN-~A-P" name)))
 384                 (ename (intern (format nil "~A-EXTENTS" name))))
 385             `(progn
 386                (defbinding ,tname () boolean
 387                  (cr context)
 388                  (x double-float)
 389                  (y double-float))
 390                (defbinding ,ename () boolean
 391                  (cr context)
 392                  (x1 double-float :out)
 393                  (y1 double-float :out)
 394                  (x2 double-float :out)
 395                  (y2 double-float :out))))))))
 396
 397 (defoperator clip t)
 398 (defoperator stroke)
 399 (defoperator fill)
 400
 401 (defbinding reset-clip () nil
 402   (cr context))
 403
 404 (defbinding copy-page () nil
 405   (cr context))
 406
 407 (defbinding show-page () nil
 408   (cr context))
 409
 410
 411 ;;; Paths
 412
 413 (defbinding get-current-point () nil
 414   (cr context)
 415   (x double-float :out)
 416   (y double-float :out))
 417
 418 (defbinding new-path () nil
 419   (cr context))
 420
 421 #?(pkg-exists-p "cairo" :atleast-version "1.2")
 422 (defbinding new-sub-path () nil
 423   (cr context))
 424
 425 (defbinding close-path () nil
 426   (cr context))
 427
 428 (defmacro defpath (name args &optional relative-p)
 429   (flet ((def (name type)
 430            `(progn
 431               ,(when (eq type 'optimized-double-float)
 432                  `(declaim (ftype (function (context ,@(loop repeat (length args) collect 'double-float))) ,(first name))))
 433               (defbinding ,name () nil
 434                 (cr context)
 435                 ,@(mapcar #'(lambda (arg) (list arg type)) args)))))
 436
 437   `(progn
 438      ,(def name 'double-float)
 439      ,(let ((name (intern (format nil "FAST-~A" name)))
 440             (cname (gffi::default-alien-fname name)))
 441         (def (list name cname) 'optimized-double-float))
 442      ,@(when relative-p
 443          (let* ((rel-name (intern (format nil "REL-~A" name)))
 444                 (fast-rel-name (intern (format nil "FAST-REL-~A" name)))
 445                 (cname (gffi::default-alien-fname rel-name)))
 446            (list
 447             (def rel-name 'double-float)
 448             (def (list fast-rel-name cname) 'optimized-double-float)))))))
 449
 450
 451 (defpath arc (xc yc radius angle1 angle2))
 452 (defpath arc-negative (xc yc radius angle1 angle2))
 453 (defpath curve-to (x1 y1 x2 y2 x3 y3) t)
 454 (defpath line-to (x y) t)
 455 (defpath move-to (x y) t)
 456 (defpath rectangle (x y width height))
 457
 458 (defun circle (cr x y radius)
 459   (arc cr x y radius 0.0 (* pi 2)))
 460
 461 (defbinding glyph-path (cr glyphs) nil
 462   (cr context)
 463   (glyphs (vector glyph))
 464   ((length glyphs) int))
 465
 466 (defbinding text-path () nil
 467   (cr context)
 468   (text string))
 469
 470
 471
 472 ;;; Patterns
 473
 474 (defbinding (pattern-add-color-stop "cairo_pattern_add_color_stop_rgba")
 475     (pattern offset red green blue &optional (alpha 1.0)) nil
 476   (pattern pattern)
 477   (offset double-float)
 478   ((ensure-color-component red) double-float)
 479   ((ensure-color-component green) double-float)
 480   ((ensure-color-component blue) double-float)
 481   ((ensure-color-component alpha) double-float))
 482
 483 (defbinding (pattern-create "cairo_pattern_create_rgba")
 484     (red green blue &optional (alpha 1.0)) pattern
 485   ((ensure-color-component red) double-float)
 486   ((ensure-color-component green) double-float)
 487   ((ensure-color-component blue) double-float)
 488   ((ensure-color-component alpha) double-float))
 489
 490 (defbinding pattern-create-for-surface () pattern
 491   (surface surface))
 492
 493 (defbinding pattern-create-linear () pattern
 494   (x0 double-float)
 495   (y0 double-float)
 496   (x1 double-float)
 497   (y1 double-float))
 498
 499 (defbinding pattern-create-radial () pattern
 500   (cx0 double-float)
 501   (cy0 double-float)
 502   (radius0 double-float)
 503   (cx1 double-float)
 504   (cy1 double-float)
 505   (radius1 double-float))
 506
 507 (defbinding %pattern-reference () nil
 508   (location pointer))
 509
 510 (defbinding %pattern-destroy () nil
 511   (location pointer))
 512
 513 (defbinding pattern-status () status
 514   (pattern pattern))
 515
 516
 517
 518 ;;; Transformations
 519
 520 (defbinding translate () nil
 521   (cr context)
 522   (tx double-float)
 523   (ty double-float))
 524
 525 (defbinding scale (cr sx &optional (sy sx)) nil
 526   (cr context)
 527   (sx double-float)
 528   (sy double-float))
 529
 530 (defun scale-to-device (cr &optional keep-rotation-p)
 531   (if keep-rotation-p
 532       (multiple-value-call #'scale cr (device-to-user-distance cr 1.0))
 533     (multiple-value-bind (x y)
 534         (multiple-value-call #'user-to-device cr (get-current-point cr))
 535       (identity-matrix cr)
 536       (translate cr x y))))
 537
 538 (defbinding rotate () nil
 539   (cr context)
 540   (angle double-float))
 541
 542 (defbinding transform () nil
 543   (cr context)
 544   (matrix matrix))
 545
 546 (defbinding (matrix "cairo_get_matrix") () nil
 547   (cr context)
 548   ((make-instance 'matrix) matrix :in/return))
 549
 550 (defbinding identity-matrix () nil
 551   (cr context))
 552
 553 (defbinding user-to-device () nil
 554   (cr context)
 555   (x double-float :in/out)
 556   (y double-float :in/out))
 557
 558 (defbinding user-to-device-distance (cr dx &optional (dy dx)) nil
 559   (cr context)
 560   (dx double-float :in/out)
 561   (dy double-float :in/out))
 562
 563 (defbinding device-to-user () nil
 564   (cr context)
 565   (x double-float :in/out)
 566   (y double-float :in/out))
 567
 568 (defbinding device-to-user-distance (cr dx &optional (dy dx)) nil
 569   (cr context)
 570   (dx double-float :in/out)
 571   (dy double-float :in/out))
 572
 573
 574 ;;; Text
 575
 576 (defbinding select-font-face () nil
 577   (cr context)
 578   (family string)
 579   (slant font-slant)
 580   (weight font-weight))
 581
 582 (defbinding set-font-size () nil
 583   (cr context)
 584   (size double-float))
 585
 586 (defbinding show-text () nil
 587   (cr context)
 588   (text string))
 589
 590 (defbinding show-glyphs () nil
 591   (cr context)
 592   (glyphs (vector glyph))
 593   ((length glyphs) int))
 594
 595 (defbinding font-extents () boolean
 596   (cr context))
 597
 598 (defbinding text-extents (cr text &optional (extents (make-instance 'text-extents))) nil
 599   (cr context)
 600   (text string)
 601   (extents text-extents :in/return))
 602
 603 (defbinding glyph-extents (cr glyphs &optional (extents (make-instance 'text-extents))) nil
 604   (cr context)
 605   (glyphs (vector glyph))
 606   ((length glyphs) int)
 607   (extents text-extents :in/return))
 608
 609
 610 ;;; Fonts
 611
 612 (defbinding %font-face-reference () nil
 613   (location pointer))
 614
 615 (defbinding %font-face-destroy () nil
 616   (location pointer))
 617
 618 (defbinding font-face-status () status
 619   (font-face font-face))
 620
 621
 622
 623 ;;; Scaled Fonts
 624
 625 (defbinding %scaled-font-reference () nil
 626   (location pointer))
 627
 628 (defbinding %scaled-font-destroy () nil
 629   (location pointer))
 630
 631 (defbinding scaled-font-status () status
 632   (scaled-font scaled-font))
 633
 634 (defbinding scaled-font-extents (scaled-font &optional (extents (make-instance 'text-extents))) nil
 635   (scaled-font scaled-font)
 636   (extents text-extents :in/return))
 637
 638 (defbinding scaled-font-glyph-extents (scaled-font glyphs &optional (extents (make-instance 'text-extents))) nil
 639   (scaled-font scaled-font)
 640   (glyphs (vector glyph))
 641   ((length glyphs) int)
 642   (extents text-extents :in/return))
 643
 644 (defbinding %scaled-font-create () pointer
 645   (font-face font-face)
 646   (font-matrix matrix)
 647   (ctm matrix)
 648   (options font-options))
 649
 650 (defmethod allocate-foreign ((scaled-font scaled-font) &key font-face font-matrix cmt options)
 651   (%scaled-font-create font-face font-matrix cmt options))
 652
 653
 654
 655 ;;; Font Options
 656
 657
 658 (defbinding %font-options-copy () nil
 659   (location pointer))
 660
 661 (defbinding %font-options-destroy () nil
 662   (location pointer))
 663
 664 (defbinding font-options-status () status
 665   (font-options font-options))
 666
 667 (defbinding %font-options-create () pointer)
 668
 669 (defmethod allocate-foreign ((font-options font-options) &rest initargs)
 670   (declare (ignore initargs))
 671   (%font-options-create))
 672
 673 (defbinding font-options-merge () nil
 674   (options1 font-options :in/return)
 675   (options2 font-options))
 676
 677 (defbinding font-options-hash () unsigned-int
 678   (options font-options))
 679
 680 (defbinding font-options-equal-p () boolean
 681   (options1 font-options)
 682   (options2 font-options))
 683
 684
 685
 686 ;;; Surfaces
 687
 688 (defbinding %surface-reference () nil
 689   (location pointer))
 690
 691 (defbinding %surface-destroy () nil
 692   (location pointer))
 693
 694 (defbinding surface-create-similar () surface
 695   (other surface)
 696   (format surface-format )
 697   (width int)
 698   (height int))
 699
 700 (defbinding surface-finish () nil
 701   (surface surface))
 702
 703 (defbinding surface-flush () nil
 704   (surface surface))
 705
 706 (defbinding surface-get-font-options () nil
 707   (surface surface)
 708   ((make-instance 'font-options) font-options :in/return))
 709
 710 (defbinding surface-set-device-offset () nil
 711   (surface surface)
 712   (x-offset double-float)
 713   (y-offset double-float))
 714
 715 (defbinding surface-status () status
 716   (surface surface))
 717
 718 (defbinding %surface-mark-dirty () nil
 719   (surface surface))
 720
 721 (defbinding %surface-mark-dirty-rectangle () nil
 722   (surface surface)
 723   (x int)
 724   (y int)
 725   (width int)
 726   (height int))
 727
 728 (defun surface-mark-dirty (surface &optional x y width height)
 729   (if x
 730       (%surface-mark-dirty-rectangle surface x y width height)
 731     (%surface-mark-dirty surface)))
 732
 733 #?(pkg-exists-p "cairo" :atleast-version "1.2")
 734 (defbinding surface-set-fallback-resolution () nil
 735   (surface surface)
 736   (x-pixels-per-inch double-float)
 737   (y-pixels-per-inch double-float))
 738
 739
 740 ;; Image Surface
 741
 742 ;; Should data be automatically freed when the surface is GCed?
 743 (defmethod allocate-foreign ((surface image-surface)
 744                              &key width height stride format data)
 745   (if (not data)
 746       (%image-surface-create format width height)
 747     (%image-surface-create-for-data data format width height
 748      (or
 749       stride
 750       (let ((element-size (cdr (assoc format '((:argb32 . 4) (:rgb24 . 4) (:a8 . 1) (:a1 1/8))))))
 751         (ceiling (* width element-size)))))))
 752
 753
 754 (defbinding %image-surface-create () image-surface
 755   (format surface-format)
 756   (width int)
 757   (hegit int))
 758
 759 (defbinding %image-surface-create-for-data () image-surface
 760   (data pointer)
 761   (format surface-format)
 762   (width int)
 763   (hegit int)
 764   (stride int))
 765
 766
 767
 768 ;;; PNG Surface
 769
 770 (defbinding image-surface-create-from-png (filename) image-surface
 771   ((truename filename) pathname))
 772
 773
 774
 775
 776 ;;; Matrices
 777
 778 (defbinding matrix-init () nil
 779   (matrix matrix :in/return)
 780   (xx double-float) (yx double-float)
 781   (xy double-float) (yy double-float)
 782   (x0 double-float) (y0 double-float))
 783
 784 (defbinding matrix-init-identity () nil
 785   (matrix matrix :in/return))
 786
 787 (defbinding matrix-init-translate () nil
 788   (matrix matrix :in/return)
 789   (tx double-float)
 790   (ty double-float))
 791
 792 (defbinding matrix-init-scale () nil
 793   (matrix matrix :in/return)
 794   (sx double-float)
 795   (sy double-float))
 796
 797 (defbinding matrix-init-rotate () nil
 798   (matrix matrix :in/return)
 799   (radians double-float))
 800
 801 (defbinding matrix-translate () nil
 802   (matrix matrix :in/return)
 803   (tx double-float)
 804   (ty double-float))
 805
 806 (defbinding matrix-scale () nil
 807   (matrix matrix :in/return)
 808   (sx double-float)
 809   (sy double-float))
 810
 811 (defbinding matrix-rotate () nil
 812   (matrix matrix :in/return)
 813   (radians double-float))
 814
 815 (defbinding matrix-invert () nil
 816   (matrix matrix :in/return))
 817
 818 (defbinding matrix-multiply () nil
 819   (result matrix :out)
 820   (a matrix)
 821   (b matrix))
 822
 823 (defbinding matrix-transform-distance () nil
 824   (matrix matrix :in/return)
 825   (dx double-float)
 826   (dy double-float))
 827
 828 (defbinding matrix-transform-point () nil
 829   (matrix matrix :in/return)
 830   (x double-float)
 831   (y double-float))
 832
 833
 834