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 | # Copyright (c) 2004-2005 |
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12 | # Purdue Research Foundation, West Lafayette, IN |
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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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143 | set y 0 |
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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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163 | set y 0 |
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164 | } |
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165 | ne { |
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166 | set x $sw |
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167 | set y 0 |
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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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