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REBOL [ Title: "Simple Rich Text renderer" Purpose: { Defines the render-rich-text function, that is able to render simple rich text in a face. } Author: "Gabriele Santilli" EMail: %giesse--rebol--it File: %render-rich-text.r License: { Copyright (c) 2004, Gabriele Santilli All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * The name of Gabriele Santilli may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. } Date: 16-Jan-2004 Version: 1.3.0 ; majorv.minorv.status ; status: 0: unfinished; 1: testing; 2: stable History: [ 15-Jan-2004 1.1.0 "History start" 15-Jan-2004 1.2.0 "First working version with *bold*, /italic/, _underline_ and link->url" 16-Jan-2004 1.3.0 "No more needs to make face twice, it wasn't resetting pane." ] Library: [ level: 'intermediate platform: 'all type: 'function domain: [text gui vid] tested-under: [view on "WindowsXP"] support: none license: 'bsd see-also: none ] ] set-face-style: func [face style' /colors c] [ face/font: make face/font [ style: either block? style [union style style'] [style'] if c [ color: first colors: reduce c ] ] ] render-rich-text: func [ "Render rich text in a face" face [object!] /local text pane pos space word' url kind ] [ text: parse/all face/text " " face/text: none pane: face/pane: make block! 2 + length? text pos: face/para/origin space: -3x-3 + size-text make face [para: make para [origin: margin: 0x0] text: " "] foreach word text [ url: kind: none parse word [ copy word' to "->" 2 skip copy url to end (if all [word' url] [kind: 'link word: word' url: to url! url]) | "*" copy word' to "*" skip end (if word' [word: word' kind: 'bold]) | "/" copy word' to "/" skip end (if word' [word: word' kind: 'italic]) | "_" copy word' to "_" skip end (if word' [word: word' kind: 'underline]) ] insert tail pane make face [ pane: none offset: pos text: word switch kind [ link [ set-face-style/colors self [underline] [blue blue + 96] feel: svv/vid-feel/hot action: func [face value] compose [ browse (url) ] ] bold [set-face-style self [bold]] italic [set-face-style self [italic]] underline [set-face-style self [underline]] ] para: make para [ origin: margin: 0x0 ] size: size-text self if pos/x + size/x > (face/size/x - face/para/origin/x - face/para/margin/x) [ pos/y: pos/y + size/y pos/x: face/para/origin/x offset: pos ] pos/x: pos/x + size/x + space/x ] ] face/size: face/para/margin + second span? pane ] example: [ view layout [ Style Text+ Text with [ append init [ render-rich-text self ] ] Text+ "_Simple_ *text* with /link/ to>" ] ]
halt ;; to terminate script if DO'ne from webpage
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