[1] | 1 | # ---------------------------------------------------------------------- |
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| 2 | # COMPONENT: mainwin - main application window for Rappture |
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| 3 | # |
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| 4 | # This widget acts as the main window for a Rappture application. |
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| 5 | # It can be configured to run in two modes: 1) normal desktop |
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| 6 | # application, and 2) web-based application. In web-based mode, |
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| 7 | # the application window runs inside a VNC window, and it takes |
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| 8 | # the full screen and blends in with the web page. |
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| 9 | # ====================================================================== |
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| 10 | # AUTHOR: Michael McLennan, Purdue University |
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[11] | 11 | # Copyright (c) 2004-2005 |
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| 12 | # Purdue Research Foundation, West Lafayette, IN |
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[1] | 13 | # ====================================================================== |
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| 14 | package require Itk |
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| 15 | |
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| 16 | option add *MainWin.mode desktop widgetDefault |
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| 17 | option add *MainWin.borderWidth 0 widgetDefault |
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| 18 | option add *MainWin.relief raised widgetDefault |
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| 19 | option add *MainWin.anchor center widgetDefault |
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| 20 | option add *MainWin.titleFont \ |
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| 21 | -*-helvetica-bold-o-normal-*-*-140-* widgetDefault |
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| 22 | |
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| 23 | itcl::class Rappture::MainWin { |
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| 24 | inherit itk::Toplevel |
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| 25 | |
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| 26 | itk_option define -mode mode Mode "" |
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| 27 | itk_option define -anchor anchor Anchor "center" |
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| 28 | itk_option define -bgscript bgScript BgScript "" |
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| 29 | |
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| 30 | constructor {args} { # defined below } |
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| 31 | |
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| 32 | public method draw {option args} |
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| 33 | |
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| 34 | protected method _redraw {} |
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| 35 | |
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| 36 | private variable _contents "" ;# frame containing app |
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| 37 | private variable _bgscript "" ;# script of background drawing cmds |
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| 38 | private variable _bgparser "" ;# parser for bgscript |
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| 39 | } |
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| 40 | |
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| 41 | itk::usual MainWin { |
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| 42 | keep -background -cursor foreground -font |
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| 43 | } |
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| 44 | |
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| 45 | # ---------------------------------------------------------------------- |
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| 46 | # CONSTRUCTOR |
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| 47 | # ---------------------------------------------------------------------- |
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| 48 | itcl::body Rappture::MainWin::constructor {args} { |
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| 49 | itk_component add area { |
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| 50 | canvas $itk_interior.area |
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| 51 | } { |
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| 52 | usual |
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| 53 | rename -background -bgcolor bgColor Background |
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| 54 | } |
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| 55 | pack $itk_component(area) -expand yes -fill both |
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| 56 | bind $itk_component(area) <Configure> [itcl::code $this _redraw] |
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| 57 | |
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| 58 | itk_component add app { |
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| 59 | frame $itk_component(area).app |
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| 60 | } { |
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| 61 | usual |
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| 62 | keep -borderwidth -relief |
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| 63 | } |
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| 64 | bind $itk_component(app) <Configure> " |
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| 65 | after cancel [itcl::code $this _redraw] |
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| 66 | after idle [itcl::code $this _redraw] |
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| 67 | " |
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| 68 | |
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| 69 | itk_component add menu { |
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| 70 | menu $itk_interior.menu |
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| 71 | } |
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| 72 | itk_component add filemenu { |
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| 73 | menu $itk_component(menu).file |
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| 74 | } |
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| 75 | $itk_component(menu) add cascade -label "File" -underline 0 \ |
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| 76 | -menu $itk_component(filemenu) |
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| 77 | $itk_component(filemenu) add command -label "Exit" -underline 1 \ |
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| 78 | -command exit |
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| 79 | |
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| 80 | # |
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| 81 | # Create a parser for the -bgscript option that can |
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| 82 | # execute drawing commands on the canvas. This allows |
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| 83 | # us to draw a background that blends in with web pages. |
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| 84 | # |
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| 85 | set _bgparser [interp create -safe] |
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| 86 | $_bgparser alias rectangle [itcl::code $this draw rectangle] |
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| 87 | $_bgparser alias oval [itcl::code $this draw oval] |
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| 88 | $_bgparser alias line [itcl::code $this draw line] |
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| 89 | $_bgparser alias polygon [itcl::code $this draw polygon] |
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| 90 | $_bgparser alias text [itcl::code $this draw text] |
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| 91 | $_bgparser alias image [itcl::code $this draw image] |
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| 92 | |
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| 93 | eval itk_initialize $args |
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| 94 | |
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| 95 | bind RapptureMainWin <Destroy> { exit } |
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| 96 | set btags [bindtags $itk_component(hull)] |
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| 97 | bindtags $itk_component(hull) [lappend btags RapptureMainWin] |
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| 98 | } |
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| 99 | |
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| 100 | # ---------------------------------------------------------------------- |
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| 101 | # USAGE: draw <option> ?<arg> <arg>...? |
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| 102 | # |
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| 103 | # Used by the -bgscript to draw items in the background area behind |
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| 104 | # the app when "-mode web" is active. This allows an application |
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| 105 | # to create a background that blends seamlessly with the underlying |
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| 106 | # web page. |
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| 107 | # ---------------------------------------------------------------------- |
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| 108 | itcl::body Rappture::MainWin::draw {option args} { |
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| 109 | set w $itk_component(hull) |
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| 110 | regsub -all {<w>} $args [winfo screenwidth $w] args |
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| 111 | regsub -all {<h>} $args [winfo screenheight $w] args |
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| 112 | eval $itk_component(area) create $option $args |
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| 113 | } |
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| 114 | |
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| 115 | # ---------------------------------------------------------------------- |
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| 116 | # USAGE: _redraw |
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| 117 | # |
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| 118 | # Used internally to redraw the widget whenever it changes size. |
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| 119 | # This matters only when "-mode web" is active, when the background |
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| 120 | # area is actually visible. |
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| 121 | # ---------------------------------------------------------------------- |
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| 122 | itcl::body Rappture::MainWin::_redraw {} { |
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| 123 | $itk_component(area) delete all |
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| 124 | if {$itk_option(-mode) == "web"} { |
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| 125 | if {[catch {$_bgparser eval $itk_option(-bgscript)} result]} { |
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| 126 | bgerror "$result\n (while redrawing application background)" |
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| 127 | } |
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| 128 | |
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| 129 | set sw [winfo width $itk_component(area)] |
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| 130 | set sh [winfo height $itk_component(area)] |
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| 131 | |
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| 132 | set clip 0 |
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| 133 | set w [winfo reqwidth $itk_component(app)] |
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| 134 | set h [winfo reqheight $itk_component(app)] |
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| 135 | if {$w > $sw} { |
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| 136 | set $w $sw |
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| 137 | set clip 1 |
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| 138 | } |
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| 139 | |
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| 140 | switch -- $itk_option(-anchor) { |
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| 141 | n { |
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| 142 | set x [expr {$sw/2}] |
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[13] | 143 | set y 0 |
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[1] | 144 | } |
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| 145 | s { |
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| 146 | set x [expr {$sw/2}] |
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| 147 | set y $sh |
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| 148 | } |
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| 149 | center { |
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| 150 | set x [expr {$sw/2}] |
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| 151 | set y [expr {$sh/2}] |
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| 152 | } |
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| 153 | w { |
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| 154 | set x 0 |
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| 155 | set y [expr {$sh/2}] |
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| 156 | } |
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| 157 | e { |
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| 158 | set x $sw |
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| 159 | set y [expr {$sh/2}] |
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| 160 | } |
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| 161 | nw { |
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| 162 | set x 0 |
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[13] | 163 | set y 0 |
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[1] | 164 | } |
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| 165 | ne { |
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| 166 | set x $sw |
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[13] | 167 | set y 0 |
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[1] | 168 | } |
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| 169 | sw { |
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| 170 | set x 0 |
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| 171 | set y $sh |
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| 172 | } |
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| 173 | se { |
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| 174 | set x $sw |
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| 175 | set y $sh |
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| 176 | } |
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| 177 | } |
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| 178 | |
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| 179 | # if the app is too big, use w/h. otherwise, 0,0 for default size |
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| 180 | if {!$clip} { |
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| 181 | set w 0 |
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| 182 | set h 0 |
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| 183 | } |
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| 184 | |
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| 185 | $itk_component(area) create window $x $y \ |
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| 186 | -anchor $itk_option(-anchor) -window $itk_component(app) \ |
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| 187 | -width $w -height $h |
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| 188 | } |
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| 189 | } |
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| 190 | |
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| 191 | # ---------------------------------------------------------------------- |
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| 192 | # OPTION: -mode |
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| 193 | # ---------------------------------------------------------------------- |
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| 194 | itcl::configbody Rappture::MainWin::mode { |
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| 195 | switch -- $itk_option(-mode) { |
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| 196 | desktop { |
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| 197 | component hull configure -menu $itk_component(hull).menu |
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| 198 | pack $itk_component(app) -expand yes -fill both |
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| 199 | wm geometry $itk_component(hull) "" |
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| 200 | } |
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| 201 | web { |
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| 202 | component hull configure -menu "" |
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| 203 | pack forget $itk_component(app) |
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| 204 | set wx [winfo screenwidth $itk_component(hull)] |
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| 205 | set wy [winfo screenheight $itk_component(hull)] |
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| 206 | wm geometry $itk_component(hull) ${wx}x${wy}+0+0 |
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| 207 | _redraw |
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| 208 | } |
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| 209 | default { |
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| 210 | error "bad value \"$itk_option(-mode)\": should be desktop or web" |
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| 211 | } |
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| 212 | } |
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| 213 | } |
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| 214 | |
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| 215 | # ---------------------------------------------------------------------- |
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| 216 | # OPTION: -bgscript |
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| 217 | # ---------------------------------------------------------------------- |
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| 218 | itcl::configbody Rappture::MainWin::bgscript { |
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| 219 | _redraw |
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| 220 | } |
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| 221 | |
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| 222 | # ---------------------------------------------------------------------- |
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| 223 | # OPTION: -anchor |
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| 224 | # ---------------------------------------------------------------------- |
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| 225 | itcl::configbody Rappture::MainWin::anchor { |
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| 226 | if {[lsearch {n s e w ne nw se sw center} $itk_option(-anchor)] < 0} { |
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| 227 | error "bad anchor \"$itk_option(-anchor)\"" |
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| 228 | } |
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| 229 | _redraw |
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| 230 | } |
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