371.2
svn: r7263 original commit: e4cbc4e6a938fd5bd90aab305ca39d61e7eae151
This commit is contained in:
Matthew Flatt
parent
371a8ea509
commit
1326804b18
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@ -1,9 +1,10 @@
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#reader(lib "reader.ss" "scribble")
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(module blurbs mzscheme
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(module blurbs (lib "lang.ss" "big")
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(require (lib "struct.ss" "scribble")
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(lib "manual.ss" "scribble")
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(lib "scheme.ss" "scribble")
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(lib "decode.ss" "scribble"))
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(require-for-label (lib "mred.ss" "mred"))
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(provide (all-defined-except p))
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@ -96,7 +97,7 @@ start/end @techlink{position} is incremented by @|what|.})
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(define OVD
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@elem{The result is only valid when the editor is displayed (see
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@secref["mr:tb:miaoverview"]).})
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@secref["tb:miaoverview"]).})
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(define (FCAX c details)
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@elem{@|c|alling this method may force the recalculation of @techlink{location}
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@ -119,28 +120,28 @@ information@|details|, even if the editor currently has delayed refreshing (see
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instead of lines (determined by both explicit newline
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characters and automatic line-wrapping).})
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(define admindiscuss @secref["mr:editoradministrators"])
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(define ateoldiscuss @secref["mr:editoreol"])
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(define textdiscuss @secref["mr:editorflattened"])
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(define clickbackdiscuss @secref["mr:editorclickback"])
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(define stylediscuss @secref["mr:editorstyles"])
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(define timediscuss @secref["mr:editorcutandpastetime"])
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(define filediscuss @secref["mr:editorfileformat"])
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(define editordatadiscuss @secref["mr:editordata"])
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(define snipclassdiscuss @secref["mr:editorsnipclasses"])
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(define togglediscuss @secref["mr:styledeltatoggle"])
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(define drawcaretdiscuss @secref["mr:drawcaretinfo"])
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(define eventspacediscuss @secref["mr:eventspaceinfo"])
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(define lockdiscuss @secref["mr:lockinfo"])
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(define mousekeydiscuss @secref["mr:mouseandkey"])
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(define globaleditordatadiscuss @secref["mr:globaleditordata"])
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(define admindiscuss @secref["editoradministrators"])
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(define ateoldiscuss @secref["editoreol"])
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(define textdiscuss @secref["editorflattened"])
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(define clickbackdiscuss @secref["editorclickback"])
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(define stylediscuss @secref["editorstyles"])
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(define timediscuss @secref["editorcutandpastetime"])
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(define filediscuss @secref["editorfileformat"])
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(define editordatadiscuss @secref["editordata"])
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(define snipclassdiscuss @secref["editorsnipclasses"])
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(define togglediscuss @secref["styledeltatoggle"])
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(define drawcaretdiscuss @secref["drawcaretinfo"])
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(define eventspacediscuss @secref["eventspaceinfo"])
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(define lockdiscuss @secref["lockinfo"])
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(define mousekeydiscuss @secref["mouseandkey"])
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(define globaleditordatadiscuss @secref["globaleditordata"])
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(define geomdiscuss @secref["mr:containeroverview"])
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(define geomdiscuss @secref["containeroverview"])
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(define mrprefsdiscuss @secref["mr:mredprefs"])
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(define mrprefsdiscuss @secref["mredprefs"])
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(define seesniporderdiscuss
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@elem{See @secref["mr:tb:miaoverview"] for information about snip order in pasteboards.})
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@elem{See @secref["tb:miaoverview"] for information about snip order in pasteboards.})
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(define (clipboardtypes)
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@elem{The @scheme[format] string is typically four capital letters. (Under
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@ -159,7 +160,9 @@ information@|details|, even if the editor currently has delayed refreshing (see
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@item{@method[dc<%> end-doc]}}
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@p{Attempts to use a drawing method outside of an active page raises an exception.})))
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(define SeeMzParam @elem{(see @secref["mz:parameters"])})
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(define reference-doc '(lib "reference.scrbl" "scribblings" "reference"))
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(define SeeMzParam @elem{(see @secref[#:doc reference-doc "parameters"])})
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(define DrawSizeNote @elem{Restrictions on the magnitude of
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drawing coordinates are described with @scheme[dc<%>].})
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@ -11,6 +11,12 @@
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(all-from (lib "class.ss"))
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(all-from (lib "contract.ss"))
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(all-from "blurbs.ss")
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(all-from "../reference/mz.ss")))
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(all-from "../reference/mz.ss"))
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(require-for-label (lib "mred.ss" "mred")
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(lib "class.ss")
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(lib "lang.ss" "big"))
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(provide-for-label (all-from (lib "mred.ss" "mred"))
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(all-from (lib "class.ss"))
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(all-from (lib "lang.ss" "big"))))
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@ -3,6 +3,7 @@
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(lib "struct.ss" "scribble")
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(lib "scheme.ss" "scribble")
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(lib "manual.ss" "scribble"))
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(require-for-label (lib "mred.ss" "mred"))
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(provide diagram->table
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short-windowing-diagram
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@ -31,7 +32,8 @@
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[(regexp-match #rx"([^-a-zA-Z0-9]*)([-a-zA-Z0-9<%>]+)(.*)" line)
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=> (lambda (m)
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(append (loop (cadr m))
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(list (to-element (string->symbol (caddr m))))
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(list (to-element (make-just-context (string->symbol (caddr m))
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#'here)))
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(loop (cadddr m))))]
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[else (list (make-element 'tt (list line)))])))))))
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(regexp-split #rx"[\r\n]+" d))))
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@ -350,9 +350,9 @@ If @scheme[raise-errors?] is true, then an error in reading triggers an
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This procedure is a load handler for use with @scheme[current-load].
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The handler recognizes MrEd editor-format files (see
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@secref["mr:editorfileformat"]) and decodes them for loading. It is
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@secref["editorfileformat"]) and decodes them for loading. It is
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normally installed as MrEd starts (see
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@secref["mr:startupsequence"]).
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@secref[#:doc reference-doc "running-sa"]).
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The handler recognizes editor files by the first twelve characters of
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the file: @litchar{WXME01}@nonterm{digit}@nonterm{digit}@litchar{ ## }.
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@ -412,7 +412,7 @@ One or more editors can be written to the stream by calling the
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To support streams that span MrEd versions, use
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@scheme[write-editor-version] before this procedure.
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See also @secref["mr:editorfileformat"].
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See also @secref["editorfileformat"].
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}
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@ -205,7 +205,7 @@ When an editor contains other editors, using @method[editor<%>
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end-edit-sequence] for the sub-editor.
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See also @method[editor<%> refresh-delayed?] and @method[editor<%>
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in-edit-sequence?], and see @secref["mr:editorthreads"] for
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in-edit-sequence?], and see @secref["editorthreads"] for
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information about edit sequences and refresh requests.
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If the @scheme[undoable?] flag is @scheme[#f], then the changes made
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@ -1322,7 +1322,7 @@ If automatic wrapping is enabled (see @method[editor<%> auto-wrap] )
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Calls @method[editor<%> on-display-size] unless the editor is
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currently in an edit sequence or currently being refreshed. In the
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latter cases, the call to @method[editor<%> on-display-size] is
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delegated to another thread; see @secref["mr:editorthreads"] for more
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delegated to another thread; see @secref["editorthreads"] for more
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information.
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}
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@ -1853,7 +1853,7 @@ See also @method[editor<%> add-undo].
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void?]{
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Repaints a region of the editor, generally called by an editor
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administrator. See @secref["mr:editorthreads"] for information about
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administrator. See @secref["editorthreads"] for information about
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edit sequences and refresh requests.
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The @scheme[x], @scheme[y], @scheme[width], and @scheme[height] arguments specify
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@ -2,7 +2,7 @@
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@require[(lib "bnf.ss" "scribble")]
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@require["common.ss"]
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@title[#:tag "mr:editor-overview"]{Editor}
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@title[#:tag "editor-overview"]{Editor}
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The editor toolbox provides a foundation for two common kinds of
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applications:
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@ -154,7 +154,7 @@ Applications that use the editor classes typically derive new versions
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(super-new)))
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]
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@section[#:tag "mr:tb:miaoverview"]{Editor Structure and Terminology}
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@section[#:tag "tb:miaoverview"]{Editor Structure and Terminology}
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MrEd supports extensible and nestable editors by decomposing an editor
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assembly into three functional parts:
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@ -221,7 +221,7 @@ When an editor is drawn into a display, each snip and position has a
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displayed.
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@subsection[#:tag "mr:editoradministrators"]{Administrators}
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@subsection[#:tag "editoradministrators"]{Administrators}
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Two extra layers of administration manage the @techlink{display}-editor and
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editor-snip connections. An editor never communicates directly with
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@ -259,7 +259,7 @@ When an editor is displayed by multiple canvases, one of the canvases'
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editor's @method[editor<%> get-admin] method thus depends on the
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context of the call.
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@subsection[#:tag "mr:editorstyles"]{Styles}
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@subsection[#:tag "editorstyles"]{Styles}
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A @deftech{style}, an instance of the @scheme[style<%>] interface,
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parameterizes high-level display information that is common to all
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@ -336,7 +336,7 @@ See @xmethod[text% get-styles-sticky] for more information about the
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style of inserted text.
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@section[#:tag "mr:editorfileformat"]{File Format}
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@section[#:tag "editorfileformat"]{File Format}
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To allow editor content to be saved to a file, the editor classes
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implement a special file format. (The format is used when cutting and
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@ -412,7 +412,7 @@ Snip classes, snip data, and snip data classes solve problems related
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for saving files or cut-and-paste, these issues can be safely
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ignored.
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@subsubsection[#:tag "mr:editorsnipclasses"]{Snip Classes}
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@subsubsection[#:tag "editorsnipclasses"]{Snip Classes}
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Each snip can be associated to a @deftech{snip class}. This ``class''
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is not a class description in the programmer's language; it is an
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@ -435,7 +435,7 @@ If a snip class's name is of the form @scheme["(lib ...)"], then the
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it is inserted into the current eventspace's snip class list, and
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loading or saving continues using the new class.
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@subsubsection[#:tag "mr:editordata"]{Editor Data}
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@subsubsection[#:tag "editordata"]{Editor Data}
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While a snip belongs to an editor, the editor may store extra
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information about a snip in some specialized way. When the snip is to
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@ -475,7 +475,7 @@ To store and load information about a snip or region in an editor:
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}
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@subsection[#:tag "mr:globaleditordata"]{Global Data: Headers and Footers}
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@subsection[#:tag "globaleditordata"]{Global Data: Headers and Footers}
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The editor file format provides for adding extra global data in
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special header and footer sections. To save and load special header
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@ -517,7 +517,7 @@ See also @method[editor<%> write-headers-to-file] and
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@method[editor<%> write-headers-to-file].
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@section[#:tag "mr:editoreol"]{End of Line Ambiguity}
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@section[#:tag "editoreol"]{End of Line Ambiguity}
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Because an editor can force a line break even when there is no
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carriage return item, a @techlink{position} alone does not always
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@ -539,7 +539,7 @@ For this reason, @techlink{position}-setting and
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is filled with @scheme[#t] if the position is ambiguous and it came
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from a right-side location, or @scheme[#f] otherwise.
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@section[#:tag "mr:editorflattened"]{Flattened Text}
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@section[#:tag "editorflattened"]{Flattened Text}
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In plain text editors, there is a simple correlation between
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@techlink{position}s and characters. In an @scheme[editor<%>] object,
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@ -568,7 +568,7 @@ Text can be extracted from an editor in either of two forms:
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}
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@section[#:tag "mr:drawcaretinfo"]{Caret Ownership}
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@section[#:tag "drawcaretinfo"]{Caret Ownership}
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Within a frame, only one object can contain the keyboard focus. This
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property must be maintained when a frame contains multiple editors in
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@ -609,7 +609,7 @@ The @scheme['show-inactive-caret] display mode is useful for showing
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its selection.
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@section[#:tag "mr:editorcutandpastetime"]{Cut and Paste Time Stamps}
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@section[#:tag "editorcutandpastetime"]{Cut and Paste Time Stamps}
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Methods of @scheme[editor<%>] that use the clipboard --- including
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@method[editor<%> copy], @method[editor<%> cut], @method[editor<%>
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@ -627,7 +627,7 @@ If the time stamp is 0, it defaults to the current time. Using 0 as the
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under X.
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@section[#:tag "mr:editorclickback"]{Clickbacks}
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@section[#:tag "editorclickback"]{Clickbacks}
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@deftech{Clickbacks} in a @scheme[text%] editor facilitate the
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creation of simple interactive objects, such as hypertext. A
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@ -647,7 +647,7 @@ Note that there is no attempt to save clickback information when a
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file is saved, since a clickback will have an arbitrary procedure
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associated with it.
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@section[#:tag "mr:lockinfo"]{Internal Editor Locks}
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@section[#:tag "lockinfo"]{Internal Editor Locks}
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Instances of @scheme[editor<%>] have three levels of internal
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locking:
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@ -693,7 +693,7 @@ Methods that report @techlink{location}-independent information about an
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that modifies the editor in any way, even setting the selection
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position, can trigger a read lock, flow lock, or write lock.
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@section[#:tag "mr:editorthreads"]{Editors and Threads}
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@section[#:tag "editorthreads"]{Editors and Threads}
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An editor is not tied to any particular thread or eventspace, except
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to the degree that it is displayed in a canvas (which has an
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@ -1,7 +1,7 @@
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#reader(lib "docreader.ss" "scribble")
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@require["common.ss"]
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@title[#:tag "mr:eventspace-funcs"]{Eventspaces}
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@title[#:tag "eventspace-funcs"]{Eventspaces}
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@defproc[(make-eventspace)
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eventspace]{
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@ -139,7 +139,7 @@ A second (optional) boolean argument indicates whether the callback
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any/c])]{
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\index{pause}\index{wait}
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Yields control to event dispatching. See
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@secref["mr:eventspaceinfo"] for details.
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@secref["eventspaceinfo"] for details.
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A handler procedure invoked by the system during a call to
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@scheme[yield] can itself call @scheme[yield], creating
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@ -180,18 +180,18 @@ Evaluating @scheme[(yield 'wait)] is thus similar to
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sensitive to whether the current thread is a handler thread, instead
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of the value of the @scheme[current-eventspace] parameter.
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If @scheme[v] is an event in MzScheme's sense (not to be confused with a
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GUI event), @scheme[yield] blocks on @scheme[v] in the same way as
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MzScheme's \Mzhyperref{@scheme[sync]}{mz:sync}, except that it may
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start a @scheme[sync] on @scheme[v] multiple times (but it will complete
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a @scheme[sync] on @scheme[v] at most one time). If the current thread
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is the current eventspace's handler thread, events are dispatched
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until a @scheme[v] sync succeeds on a MrEd event boundary. For other
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threads, calling @scheme[yield] with a MzScheme event is
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equivalent to calling @scheme[sync]. In either case, the result is
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the same that of @scheme[sync]; however, if a wrapper procedure is
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associated with @scheme[v] via @scheme[handle-evt], it is not called in
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tail position with respect to the @scheme[yield].
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If @scheme[v] is an event in MzScheme's sense (not to be confused with
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a GUI event), @scheme[yield] blocks on @scheme[v] in the same way as
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@scheme[sync], except that it may start a @scheme[sync] on @scheme[v]
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multiple times (but it will complete a @scheme[sync] on @scheme[v] at
|
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most one time). If the current thread is the current eventspace's
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handler thread, events are dispatched until a @scheme[v] sync
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succeeds on a MrEd event boundary. For other threads, calling
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@scheme[yield] with a MzScheme event is equivalent to calling
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@scheme[sync]. In either case, the result is the same that of
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@scheme[sync]; however, if a wrapper procedure is associated with
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@scheme[v] via @scheme[handle-evt], it is not called in tail position
|
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with respect to the @scheme[yield].
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Always use @scheme[(yield @scheme[v])] instead of a busy-wait loop.
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}
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|
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@ -19,7 +19,7 @@ Returns a list of font face names available on the current system. If
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Returns the built-in default face mapping for a particular font
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family. The built-in default can be overridden via preferences, as
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described in @secref["mr:fontresources"].
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described in @secref["fontresources"].
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See @scheme[font%] for information about @scheme[family].
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|
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@ -1,12 +1,15 @@
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#reader(lib "docreader.ss" "scribble")
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@require["common.ss"]
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@title{PLT Scheme GUI: MrEd}
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@title[#:tag-prefix '(lib "gui.scrbl" "scribblings" "gui")
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#:tag "top"]{PLT Scheme GUI: MrEd}
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@declare-exporting[(lib "mred")]
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This reference manual describes the MrEd GUI toolbox that is part of
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PLT Scheme. See @secref["guide:mred"] in
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@italic{@link["../guide/index.html"]{A Guide to PLT Scheme}} for an
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introduction to MrEd.
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PLT Scheme. See @secref[#:doc '(lib "guide.scrbl" "scribblings"
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"guide") "mred"] in @italic{@link["../guide/index.html"]{A Guide to
|
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PLT Scheme}} for an introduction to MrEd.
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The @scheme[(lib "mred")] module provides all of the class, interface,
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and procedure bindings defined in this manual. The
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|
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@ -11,18 +11,18 @@ For documentation purposes, the MrEd toolbox is organized into three
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@item{The @deftech{windowing} toolbox, for implementing form-filling
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GUI programs (such as a database query window) using buttons, menus,
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text fields, and events. The windowing toolbox is described in
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@secref["mr:windowing-overview"].}
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@secref["windowing-overview"].}
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|
||||
@item{The @deftech{drawing} toolbox, for drawing pictures or
|
||||
implementing dynamic GUI programs (such as a video game) using
|
||||
drawing canvases, pens, and brushes. The drawing toolbox is
|
||||
described in @secref["mr:drawing-overview"].}
|
||||
described in @secref["drawing-overview"].}
|
||||
|
||||
@item{The @deftech{editor} toolbox, for developing traditional text
|
||||
editors, editors that mix text and graphics, or free-form layout
|
||||
editors (such as a word processor, HTML editor, or icon-based file
|
||||
browser). The editor toolbox is described in
|
||||
@secref["mr:editor-overview"].}
|
||||
@secref["editor-overview"].}
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
4
collects/scribblings/gui/info.ss
Normal file
4
collects/scribblings/gui/info.ss
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
(module info (lib "infotab.ss" "setup")
|
||||
(define name "Scribblings: GUI")
|
||||
(define scribblings '(("gui.scrbl" (multi-page main-doc)))))
|
||||
|
||||
|
|
@ -83,7 +83,7 @@ If @scheme[try-chain?] is not @scheme[#f], keymaps chained to this one
|
|||
are searched for the function name. If the function is not found and
|
||||
@scheme[try-chain?] is @scheme[#f]; an exception is also raised, but
|
||||
the exception handler cannot escape (see
|
||||
@secref["mr:evtcontjump"]).
|
||||
@secref["evtcontjump"]).
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -327,7 +327,7 @@ Examples:
|
|||
A call to @method[keymap% map-function] that would map a particular
|
||||
key sequence both as a prefix and as a complete sequence raises an
|
||||
exception, but the exception handler cannot escape (see
|
||||
@secref["mr:evtcontjump"]).
|
||||
@secref["evtcontjump"]).
|
||||
|
||||
A function name does not have to be mapped to a handler before input
|
||||
states are mapped to the name; the handler is dispatched by name at
|
||||
|
|
|
|||
|
|
@ -1,7 +1,7 @@
|
|||
#reader(lib "docreader.ss" "scribble")
|
||||
@require["common.ss"]
|
||||
|
||||
@title[#:tag "mr:mredprefs"]{Preferences}
|
||||
@title[#:tag "mredprefs"]{Preferences}
|
||||
|
||||
MrEd supports a number of preferences for global configuration. The
|
||||
MrEd preferences are stored in the common file reported by
|
||||
|
|
@ -22,7 +22,7 @@ The following are the (case-sensitive) preference names used by MrEd:
|
|||
@item{@ResourceFirst{controlFontSize} --- sets the font size for
|
||||
control and menu labels (Windows, X); the font is the @scheme['system]
|
||||
font, which can be configured as described in
|
||||
@secref["mr:fontresources"].}
|
||||
@secref["fontresources"].}
|
||||
|
||||
@item{@ResourceFirst{defaultMenuPrefix} --- sets the prefix used by
|
||||
default for menu item shortcuts under X, one of @scheme['ctl],
|
||||
|
|
@ -82,4 +82,4 @@ The following are the (case-sensitive) preference names used by MrEd:
|
|||
|
||||
In addition, preference names built from font face names can provide
|
||||
or override default entries for the @scheme[font-name-directory<%>];
|
||||
see @secref["mr:fontresources"] for information.
|
||||
see @secref["fontresources"] for information.
|
||||
|
|
|
|||
|
|
@ -16,7 +16,8 @@ A @scheme[readable-snip<%>] object is treated specially by the port
|
|||
any/c]{
|
||||
|
||||
The arguments are the same as the arguments to a procedure returned by
|
||||
a custom input port's @scheme[read]; see @secref["mz:customport"] for
|
||||
a custom input port's @scheme[read]; see @secref[#:doc '(lib
|
||||
"reference.scrbl" "scribblings" "reference") "customport"] for
|
||||
details. The result is also the same as the result from a
|
||||
@scheme[read]-produced procedure.
|
||||
|
||||
|
|
|
|||
|
|
@ -1228,7 +1228,7 @@ If the line starts with invisible @techlink{item}s and @scheme[visible?] is not
|
|||
To calculate lines, if the following are true:
|
||||
@itemize{
|
||||
|
||||
@item{the editor is not displayed (see @secref["mr:tb:miaoverview"]),}
|
||||
@item{the editor is not displayed (see @secref["tb:miaoverview"]),}
|
||||
|
||||
@item{a maximum width is set for the editor, and}
|
||||
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@ Timers have a relatively high priority in the event queue. Thus, if
|
|||
within the @method[timer% notify] procedure to allow guaranteed event
|
||||
processing.
|
||||
|
||||
See @secref["mr:eventspaceinfo"] for more information about event
|
||||
See @secref["eventspaceinfo"] for more information about event
|
||||
priorities.
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@
|
|||
@require["common.ss"]
|
||||
@require["diagrams.ss"]
|
||||
|
||||
@title[#:tag "mr:windowing-overview"]{Windowing}
|
||||
@title[#:tag "windowing-overview"]{Windowing}
|
||||
|
||||
@section{Basic GUI Building Blocks}
|
||||
|
||||
|
|
@ -18,7 +18,7 @@ MrEd's windowing toolbox provides the basic building blocks of GUI
|
|||
(define frame (new frame% [label "Example"]))
|
||||
|
||||
(code:comment #, @t{Show the frame by calling its @method[top-level-window<%> show] method})
|
||||
(send frame top-level-window::show #t)
|
||||
(send frame #,(:: top-level-window<%> show) #t)
|
||||
]
|
||||
|
||||
The built-in classes provide various mechanisms for handling GUI
|
||||
|
|
@ -103,7 +103,7 @@ The system dispatches GUI events sequentially; that is, after invoking
|
|||
After the user clicks @onscreen{Pause}, the entire frame becomes
|
||||
unresponsive for five seconds; the system cannot dispatch more events
|
||||
until the call to @scheme[sleep] returns. For more information about
|
||||
event dispatching, see @secref["mr:eventspaceinfo"].
|
||||
event dispatching, see @secref["eventspaceinfo"].
|
||||
|
||||
In addition to dispatching events, the GUI classes also handle the
|
||||
graphical layout of windows. Our example frame demonstrates a simple
|
||||
|
|
@ -128,7 +128,7 @@ In addition to dispatching events, the GUI classes also handle the
|
|||
]
|
||||
|
||||
For more information about window layout and containers, see
|
||||
@secref["mr:containeroverview"].
|
||||
@secref["containeroverview"].
|
||||
|
||||
@section{Core Windowing Classes}
|
||||
|
||||
|
|
@ -180,7 +180,7 @@ The fundamental graphical element in MrEd's windowing toolbox is an
|
|||
@item{@scheme[editor-canvas%] --- an @deftech{editor canvas} is a
|
||||
subwindow for displaying a text editor or pasteboard editor. The
|
||||
@scheme[editor-canvas%] class is documented with the editor classes
|
||||
in @secref["mr:editor-overview"].}
|
||||
in @secref["editor-overview"].}
|
||||
|
||||
@item{@deftech{Controls} --- containees that the user can manipulate:
|
||||
|
||||
|
|
@ -318,7 +318,7 @@ system:
|
|||
|
||||
@; ------------------------------------------------------------------------
|
||||
|
||||
@section[#:tag "mr:containeroverview"]{Geometry Management}
|
||||
@section[#:tag "containeroverview"]{Geometry Management}
|
||||
|
||||
MrEd's geometry management makes it easy to design windows that look
|
||||
right on all platforms, despite different graphical representations
|
||||
|
|
@ -385,15 +385,15 @@ As the example demonstrates, a stretchable container grows to fill its
|
|||
|
||||
The following subsections describe the container system in detail,
|
||||
first discussing the attributes of a containee in
|
||||
@secref["mr:containees"], and then describing
|
||||
@secref["containees"], and then describing
|
||||
the attributes of a container in
|
||||
@secref["mr:containers"]. In addition to the
|
||||
@secref["containers"]. In addition to the
|
||||
built-in vertical and horizontal containers, programmers can define
|
||||
new types of containers as discussed in the final subsection,
|
||||
@secref["mr:new-containers"].
|
||||
@secref["new-containers"].
|
||||
|
||||
|
||||
@subsection[#:tag "mr:containees"]{Containees}
|
||||
@subsection[#:tag "containees"]{Containees}
|
||||
|
||||
Each @tech{containee}, or child, has the following properties:
|
||||
|
||||
|
|
@ -414,7 +414,7 @@ A @tech{container} arranges its children based on these four
|
|||
container is specified when the @tech{containee} is created, and the
|
||||
parent cannot be changed. However, a @tech{containee} can be
|
||||
@tech{hidden} or @tech{deleted} within its parent, as described in
|
||||
@secref["mr:containers"].
|
||||
@secref["containers"].
|
||||
|
||||
The @deftech{graphical minimum size} of a particular containee, as
|
||||
reported by @method[area<%> get-graphical-min-size], depends on the
|
||||
|
|
@ -462,7 +462,7 @@ In practice, the @tech{requested minimum size} and @tech{margin} of a
|
|||
containee, depending on the visual effect desired by the programmer.
|
||||
|
||||
|
||||
@subsection[#:tag "mr:containers"]{Containers}
|
||||
@subsection[#:tag "containers"]{Containers}
|
||||
|
||||
A container has the following properties:
|
||||
|
||||
|
|
@ -573,7 +573,7 @@ The alignment specification for a container determines how it
|
|||
the container. A container's alignment is changed with the
|
||||
@method[area-container<%> set-alignment] method.
|
||||
|
||||
@subsection[#:tag "mr:new-containers"]{Defining New Types of Containers}
|
||||
@subsection[#:tag "new-containers"]{Defining New Types of Containers}
|
||||
|
||||
Although nested horizontal and vertical containers can express most
|
||||
layout patterns, a programmer can define a new type of container with
|
||||
|
|
@ -613,7 +613,7 @@ The widths and heights for both the input and output include the
|
|||
placing the control.
|
||||
|
||||
|
||||
@section[#:tag "mr:mouseandkey"]{Mouse and Keyboard Events}
|
||||
@section[#:tag "mouseandkey"]{Mouse and Keyboard Events}
|
||||
|
||||
Whenever the user moves the mouse, clicks or releases a mouse button,
|
||||
or presses a key on the keyboard, an event is generated for some
|
||||
|
|
@ -698,7 +698,7 @@ Controls, such as buttons and list boxes, handle keyboard and mouse
|
|||
|
||||
@; ------------------------------------------------------------------------
|
||||
|
||||
@section[#:tag "mr:eventspaceinfo"]{Event Dispatching and Eventspaces}
|
||||
@section[#:tag "eventspaceinfo"]{Event Dispatching and Eventspaces}
|
||||
|
||||
@section-index["events" "dispatching"]
|
||||
|
||||
|
|
@ -754,12 +754,12 @@ In MrEd, an @deftech{eventspace} is a context for processing GUI
|
|||
|
||||
@index['("dialogs" "modal")]{When} a frame or dialog is created
|
||||
without a parent, it is associated with the @tech{current eventspace}
|
||||
as described in @secref["mr:currenteventspace"]. Events for a
|
||||
as described in @secref["currenteventspace"]. Events for a
|
||||
top-level window and its descendants are always dispatched in the
|
||||
window's eventspace. Every dialog is modal; a dialog's
|
||||
@method[dialog% show] method implicitly calls @scheme[yield] to
|
||||
handle events while the dialog is shown. (See also
|
||||
@secref["mr:espacethreads"] for information about threads and modal
|
||||
@secref["espacethreads"] for information about threads and modal
|
||||
dialogs.) Furthermore, when a modal dialog is shown, the system
|
||||
disables all other top-level windows in the dialog's eventspace, but
|
||||
windows in other eventspaces are unaffected by the modal dialog.
|
||||
|
|
@ -783,7 +783,7 @@ In addition to events corresponding to user and windowing actions,
|
|||
call the timer's @method[timer% notify] method. Like a top-level
|
||||
window, each timer is associated with a particular eventspace (the
|
||||
@tech{current eventspace} as described in
|
||||
@secref["mr:currenteventspace"]) when it is created, and the timer
|
||||
@secref["currenteventspace"]) when it is created, and the timer
|
||||
queues the event in its eventspace.
|
||||
|
||||
@deftech{Explicitly queued events} are created with
|
||||
|
|
@ -817,10 +817,10 @@ Although a programmer has no direct control over the order in which
|
|||
dispatches by setting the event dispatch handler via the
|
||||
@scheme[event-dispatch-handler] parameter. This parameter and other
|
||||
eventspace procedures are described in more detail in
|
||||
@secref["mr:eventspace-funcs"].
|
||||
@secref["eventspace-funcs"].
|
||||
|
||||
|
||||
@subsection[#:tag "mr:espacethreads"]{Eventspaces and Threads}
|
||||
@subsection[#:tag "espacethreads"]{Eventspaces and Threads}
|
||||
|
||||
When a new eventspace is created, a corresponding @deftech{handler
|
||||
thread} is created for the eventspace. When the system dispatches an
|
||||
|
|
@ -840,7 +840,7 @@ When a handler thread shows a dialog, the dialog's @method[dialog%
|
|||
@scheme[semaphore-wait].
|
||||
|
||||
|
||||
@subsection[#:tag "mr:currenteventspace"]{Creating and Setting the Eventspace}
|
||||
@subsection[#:tag "currenteventspace"]{Creating and Setting the Eventspace}
|
||||
|
||||
Whenever a frame, dialog, or timer is created, it is associated with
|
||||
the @deftech{current eventspace} as determined by the
|
||||
|
|
@ -858,23 +858,24 @@ The @scheme[make-eventspace] procedure creates a new
|
|||
]
|
||||
|
||||
When an eventspace is created, it is placed under the management of
|
||||
the @tech{current custodian}. When a custodian shuts down an
|
||||
eventspace, all frames and dialogs associated with the eventspace are
|
||||
destroyed (without calling @method[top-level-window<%> can-close?]
|
||||
or @xmethod[top-level-window<%> on-close]), all timers in the
|
||||
eventspace are stopped, and all enqueued callbacks are removed.
|
||||
Attempting to create a new window, timer, or explicitly queued event
|
||||
in a shut-down eventspace raises the @scheme[exn:misc] exception.
|
||||
the @tech[#:doc reference-doc]{current custodian}. When a custodian
|
||||
shuts down an eventspace, all frames and dialogs associated with the
|
||||
eventspace are destroyed (without calling @method[top-level-window<%>
|
||||
can-close?] or @xmethod[top-level-window<%> on-close]), all timers
|
||||
in the eventspace are stopped, and all enqueued callbacks are
|
||||
removed. Attempting to create a new window, timer, or explicitly
|
||||
queued event in a shut-down eventspace raises the @scheme[exn:misc]
|
||||
exception.
|
||||
|
||||
An eventspace is a @techlink{synchronizable event} (not to be confused
|
||||
with a GUI event), so it can be used with @scheme[sync]. As a
|
||||
synchronizable event, an eventspace is in a blocking state when a
|
||||
frame is visible, a timer is active, a callback is queued, or a
|
||||
@scheme[menu-bar%] is created with a @scheme['root] parent. (Note
|
||||
that the blocking state of an eventspace is unrelated to whether an
|
||||
event is ready for dispatching.)
|
||||
An eventspace is a @techlink[#:doc reference-doc]{synchronizable
|
||||
event} (not to be confused with a GUI event), so it can be used with
|
||||
@scheme[sync]. As a synchronizable event, an eventspace is in a
|
||||
blocking state when a frame is visible, a timer is active, a callback
|
||||
is queued, or a @scheme[menu-bar%] is created with a @scheme['root]
|
||||
parent. (Note that the blocking state of an eventspace is unrelated
|
||||
to whether an event is ready for dispatching.)
|
||||
|
||||
@subsection[#:tag "mr:evtcontjump"]{Exceptions and Continuation Jumps}
|
||||
@subsection[#:tag "evtcontjump"]{Exceptions and Continuation Jumps}
|
||||
|
||||
Whenever the system dispatches an event, the call to the handler
|
||||
procedure is wrapped so that full continuation jumps are not allowed
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user