/[mcclim]/mcclim/bordered-output.lisp
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Contents of /mcclim/bordered-output.lisp

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Revision 1.7 - (show annotations)
Wed May 28 18:46:02 2003 UTC (10 years, 10 months ago) by gilbert
Branch: MAIN
Changes since 1.6: +3 -2 lines
INVOKE-SURROUNDING-OUTPUT-WITH-BORDER
    . uses WITH-IDENTITY-TRANSFORMATION now
    . more graceful behavior in case the border style is not defined.
1 ;;; -*- Mode: Lisp; Package: CLIM-INTERNALS -*-
2
3 ;;; (c) copyright 2002 by Alexey Dejneka (adejneka@comail.ru)
4
5 ;;; This library is free software; you can redistribute it and/or
6 ;;; modify it under the terms of the GNU Library General Public
7 ;;; License as published by the Free Software Foundation; either
8 ;;; version 2 of the License, or (at your option) any later version.
9 ;;;
10 ;;; This library is distributed in the hope that it will be useful,
11 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ;;; Library General Public License for more details.
14 ;;;
15 ;;; You should have received a copy of the GNU Library General Public
16 ;;; License along with this library; if not, write to the
17 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 ;;; Boston, MA 02111-1307 USA.
19
20 ;;; TODO:
21 ;;; - Use DRAWING-OPTIONS, MOVE-CURSOR in I-S-O-W-B
22 ;;; - Gap computation
23
24 (in-package :clim-internals)
25
26 (defvar *border-types* (make-hash-table))
27
28 (defmacro surrounding-output-with-border ((&optional stream
29 &rest drawing-options
30 &key (shape :rectangle) (move-cursor t))
31 &body body)
32 (declare (ignore shape move-cursor))
33 (orf stream '*standard-output*)
34 (check-type stream symbol)
35 (let ((continuation-name (gensym)))
36 `(flet ((,continuation-name (,stream) ,@body))
37 (invoke-surrounding-output-with-border ,stream
38 #',continuation-name
39 ,@drawing-options))))
40
41 (defun invoke-surrounding-output-with-border (stream cont
42 &rest drawing-options
43 &key (shape :rectangle) (move-cursor t))
44 (with-sheet-medium (medium stream)
45 (let ((record (with-new-output-record (stream)
46 (funcall cont stream))))
47 (with-bounding-rectangle* (left top right bottom) record
48 (with-identity-transformation (medium)
49 (funcall (or (gethash shape *border-types*)
50 (error "Border shape ~S not defined." shape))
51 :stream stream
52 :record record
53 :left left :top top
54 :right right :bottom bottom
55 :allow-other-keys t))))))
56
57 (defmacro define-border-type (shape arglist &body body)
58 (check-type arglist list)
59 (loop for arg in arglist
60 do (check-type arg symbol)
61 (assert (member arg '(&key stream record left top right bottom)
62 :test #'string-equal)))
63 `(setf (gethash ,shape *border-types*)
64 (lambda ,arglist ,@body)))
65
66
67 ;;;; Standard border types
68
69 (define-border-type :rectangle (&key stream left top right bottom)
70 (let ((gap 3)) ; FIXME
71 (draw-rectangle* stream
72 (- left gap) (- top gap)
73 (+ right gap) (+ bottom gap)
74 :filled nil)))
75
76 (define-border-type :oval (&key stream left top right bottom)
77 (let ((gap 3)) ; FIXME
78 (draw-oval* stream
79 (/ (+ left right) 2) (/ (+ top bottom) 2)
80 (+ (/ (- right left) 2) gap) (+ (/ (- bottom top) 2) gap)
81 :filled nil)))
82
83 (define-border-type :drop-shadow (&key stream left top right bottom)
84 (let* ((gap 3) ; FIXME?
85 (offset 4)
86 (left-edge (- left gap))
87 (bottom-edge (+ bottom gap))
88 (top-edge (- top gap))
89 (right-edge (+ right gap)))
90 (draw-rectangle* stream
91 left-edge top-edge
92 right-edge bottom-edge
93 :filled nil)
94 (draw-rectangle* stream
95 right-edge (+ top-edge offset)
96 (+ right-edge offset) bottom-edge :filled T)
97 (draw-rectangle* stream
98 (+ left-edge offset) bottom-edge
99 (+ right-edge offset) (+ bottom-edge offset)
100 :filled T)))
101
102 (define-border-type :underline (&key stream record)
103 (let ((children (output-record-children record)))
104 (loop for child across children do
105 (when (text-displayed-output-record-p child)
106 (with-bounding-rectangle* (left top right bottom) child
107 (declare (ignore top))
108 (draw-line* stream left bottom right bottom))))))

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