1 | # ---------------------------------------------------------------------- |
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2 | # COMPONENT: videochooser - list videos |
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3 | # |
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4 | # ====================================================================== |
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5 | # AUTHOR: Derrick Kearney, Purdue University |
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6 | # Copyright (c) 2005-2010 Purdue Research Foundation |
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7 | # |
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8 | # See the file "license.terms" for information on usage and redistribution of |
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9 | # this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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10 | # ====================================================================== |
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11 | |
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12 | package require Itk |
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13 | package require BLT |
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14 | package require Img |
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15 | package require Rappture |
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16 | package require RapptureGUI |
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17 | |
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18 | itcl::class Rappture::VideoChooser { |
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19 | inherit itk::Widget |
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20 | |
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21 | itk_option define -width width Width 300 |
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22 | itk_option define -height height Height 300 |
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23 | itk_option define -variable variable Variable "" |
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24 | itk_option define -thumbsdir thumbsdir Thumbsdir "" |
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25 | |
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26 | constructor { args } { |
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27 | # defined below |
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28 | } |
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29 | destructor { |
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30 | # defined below |
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31 | } |
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32 | |
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33 | public method load {paths} |
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34 | public method select {id} |
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35 | protected method _fixSize {} |
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36 | |
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37 | private variable _vcnt 0 ;# counter of videos |
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38 | private variable _variable "" ;# variable to pass along to each choice |
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39 | private variable _paths "" ;# list of choice paths |
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40 | private variable _objs "" ;# list of choice objects |
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41 | } |
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42 | |
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43 | |
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44 | itk::usual VideoChooser { |
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45 | } |
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46 | |
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47 | # ---------------------------------------------------------------------- |
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48 | # CONSTRUCTOR |
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49 | # ---------------------------------------------------------------------- |
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50 | itcl::body Rappture::VideoChooser::constructor {args} { |
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51 | |
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52 | itk_component add scroller { |
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53 | Rappture::Scroller $itk_interior.scroller \ |
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54 | -xscrollmode auto \ |
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55 | -yscrollmode off \ |
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56 | -xscrollside bottom |
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57 | } |
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58 | |
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59 | |
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60 | $itk_component(scroller) contents frame |
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61 | |
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62 | |
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63 | pack $itk_component(scroller) -fill both -expand yes |
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64 | |
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65 | eval itk_initialize $args |
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66 | } |
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67 | |
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68 | # ---------------------------------------------------------------------- |
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69 | # DESTRUCTOR |
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70 | # ---------------------------------------------------------------------- |
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71 | itcl::body Rappture::VideoChooser::destructor {} { |
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72 | } |
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73 | |
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74 | # ---------------------------------------------------------------------- |
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75 | # USAGE: load |
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76 | # ---------------------------------------------------------------------- |
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77 | itcl::body Rappture::VideoChooser::load {paths} { |
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78 | |
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79 | set f [$itk_component(scroller) contents] |
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80 | |
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81 | foreach path $paths { |
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82 | incr _vcnt |
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83 | |
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84 | set ci [Rappture::VideoChooserInfo $f.vi${_vcnt} \ |
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85 | -variable ${_variable} \ |
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86 | -thumbsdir $itk_option(-thumbsdir)] |
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87 | $ci load $path "" |
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88 | pack $ci -expand yes -fill both -side left |
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89 | |
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90 | # add the object to the list of video info objs |
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91 | lappend _paths $path |
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92 | lappend _objs $ci |
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93 | } |
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94 | |
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95 | _fixSize |
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96 | } |
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97 | |
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98 | # ---------------------------------------------------------------------- |
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99 | # USAGE: select |
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100 | # ---------------------------------------------------------------------- |
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101 | itcl::body Rappture::VideoChooser::select {id} { |
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102 | |
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103 | set obj "" |
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104 | |
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105 | if {[string is integer $id] == 1} { |
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106 | # treat $id as the index |
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107 | if {($id < 0) && ($id >= [llength ${_objs}])} { |
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108 | error "invalid id \"$id\": must be in range 0 to [llength ${_objs}]" |
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109 | } |
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110 | } else { |
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111 | # treat $id as a file path |
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112 | set idx [lsearch -exact ${_paths} $id] |
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113 | if {$idx == -1} { |
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114 | error "invalid id \"$id\": not found in list of loaded objects" |
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115 | } |
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116 | set id $idx |
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117 | } |
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118 | |
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119 | # grab the object associated with the id |
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120 | # and call it's select function. |
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121 | set obj [lindex ${_objs} $id] |
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122 | $obj select |
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123 | } |
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124 | |
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125 | |
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126 | # ---------------------------------------------------------------------- |
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127 | # USAGE: _fixSize |
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128 | # ---------------------------------------------------------------------- |
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129 | itcl::body Rappture::VideoChooser::_fixSize {} { |
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130 | |
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131 | # fix the dimesions of the canvas |
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132 | } |
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133 | |
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134 | # ---------------------------------------------------------------------- |
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135 | # CONFIGURE: -variable |
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136 | # ---------------------------------------------------------------------- |
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137 | itcl::configbody Rappture::VideoChooser::variable { |
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138 | set _variable $itk_option(-variable) |
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139 | |
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140 | if {"" != $_variable} { |
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141 | upvar #0 $_variable var |
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142 | |
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143 | foreach o ${_objs} { |
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144 | # tell this object's children about the variable change |
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145 | $o configure -variable $var |
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146 | } |
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147 | } |
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148 | } |
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149 | |
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150 | # ---------------------------------------------------------------------- |
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151 | # OPTION: -width |
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152 | # ---------------------------------------------------------------------- |
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153 | itcl::configbody Rappture::VideoChooser::width { |
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154 | # $_dispatcher event -idle !fixsize |
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155 | if {[string is integer $itk_option(-width)] == 0} { |
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156 | error "bad value: \"$itk_option(-width)\": width should be an integer" |
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157 | } |
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158 | set _width $itk_option(-width) |
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159 | after idle [itcl::code $this _fixSize] |
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160 | } |
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161 | |
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162 | # ---------------------------------------------------------------------- |
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163 | # OPTION: -height |
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164 | # ---------------------------------------------------------------------- |
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165 | itcl::configbody Rappture::VideoChooser::height { |
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166 | # $_dispatcher event -idle !fixsize |
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167 | if {[string is integer $itk_option(-height)] == 0} { |
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168 | error "bad value: \"$itk_option(-height)\": height should be an integer" |
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169 | } |
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170 | set _height $itk_option(-height) |
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171 | after idle [itcl::code $this _fixSize] |
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172 | } |
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