1 | ;------------------------------------------------------------ |
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2 | ;------------------------------------------------------------ |
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3 | ;------------------------------------------------------------ |
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4 | ;+ |
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5 | ; NAME: cw_droplist_pm |
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6 | ; |
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7 | ; PURPOSE: widget equivalent a WIDGET_DROPLIST sauf qu'en plus on |
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8 | ; dispose de 2 bouttons + et - pour deplacer le widget de +/- 1. |
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9 | ; |
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10 | ; CATEGORY: compound widget (aide a l''ecriture des widgets) |
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11 | ; |
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12 | ; CALLING SEQUENCE: id=cw_droplist_pm(parent) |
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13 | ; |
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14 | ; INPUTS: |
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15 | ; Parent: The widget ID of the parent widget. |
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16 | ; |
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17 | ; KEYWORD PARAMETERS:tous ceux de WIDGET_DROPLIST |
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18 | ; |
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19 | ; OUTPUTS: |
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20 | ; The returned value of this function is the widget ID of the |
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21 | ; newly-created animation widget. |
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22 | ; |
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23 | ; COMMON BLOCKS: none |
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24 | ; |
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25 | ; SIDE EFFECTS: |
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26 | ; |
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27 | ; Widget Events Returned by Droplist Widgets |
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28 | ; |
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29 | ; Pressing the mouse button while the mouse cursor is over an |
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30 | ; element of a droplist widget causes the widget to change the label |
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31 | ; on the droplist button and to generate an event. The appearance of |
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32 | ; any previously selected element is restored to normal at the same |
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33 | ; time. The event structure returned by the WIDGET_EVENT function is |
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34 | ; defined by the following statement: |
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35 | ; |
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36 | ; { CW_DROPLIST_PM, ID:0L, TOP:0L, HANDLER:0L, INDEX:0L, OUT:0 } |
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37 | ; |
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38 | ; The first three fields are the standard fields found in every |
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39 | ; widget event. |
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40 | ; INDEX returns the index of the selected item. This can be used to |
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41 | ; index the array of names originally used to set the widget''s |
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42 | ; value |
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43 | ; OUT:c''est un entier qui peut prendre 3 valeurs: |
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44 | ; 1 : si on appuie sur + alors que l''index est deja aux max. rq: |
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45 | ; ds ce cas l''index reste au max |
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46 | ; -1: si on appuie sur - alors que l''index est deja aux min. rq: |
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47 | ; ds ce cas l''index reste au min |
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48 | ; 0 : ds les autres cas! |
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49 | ; |
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50 | ; Keywords to WIDGET_CONTROL |
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51 | ; |
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52 | ; A number of keywords to the WIDGET_CONTROL procedure affect the |
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53 | ; behavior of cw_slider_pm widget: GET_VALUE and SET_VALUE. |
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54 | ; 1) GET_VALUE |
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55 | ; widget_control,wid_id,get_value=resultat |
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56 | ; retourne ds la variable resultat une structure de 3 elements dont |
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57 | ; les noms sont inspires des mots cles que l''on peut passer a |
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58 | ; widget_control qd on utilise WIDGET_DROPLIST: |
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59 | ; DROPLIST_NUMBER: the number of elements currently |
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60 | ; contained in the specified droplist widget. |
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61 | ; DROPLIST_SELECT: the zero-based number of the |
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62 | ; currently-selected element (i.e., the currently-displayed |
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63 | ; element) in the specified droplist widget. |
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64 | ; DYNAMIC_RESIZE: a True value (1) if the widget specified |
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65 | ; by Widget_ID is a button, droplist, or label widget that |
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66 | ; has had its DYNAMIC_RESIZE attribute set. Otherwise, |
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67 | ; False (0) is returned. |
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68 | ; 2) SET_VALUE |
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69 | ; widget_control,wid_id,set_value=impose |
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70 | ; permet de modifier l''etat de la droplist comme on peut le faire |
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71 | ; pour WIDGET_DROPLIST Impose peut etre: |
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72 | ; a) The contents of the list widget (string or string array) |
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73 | ; b) une structure qui peut avoir comme elements (de 1 a 3): |
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74 | ; DYNAMIC_RESIZE:Set this keyword to activate (if set to 1) |
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75 | ; or deactivate (if set to 0) dynamic resizing of the |
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76 | ; specified CW_DROPLIST_PM widget (see the documentation |
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77 | ; for the DYNAMIC_RESIZE keyword to WIDGET_DROPLIST |
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78 | ; procedure for more information about dynamic widget |
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79 | ; resizing). |
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80 | ; DROPLIST_SELECT:Set this keyword to return the zero-based |
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81 | ; number of the currently-selected element (i.e., the |
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82 | ; currently-displayed element) in the specified droplist |
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83 | ; widget. |
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84 | ; VALUE: The contents of the list widget (string or string |
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85 | ; array) |
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86 | ; |
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87 | ; RESTRICTIONS: |
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88 | ; |
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89 | ; EXAMPLE: cf utiliser le programme founit i-dessous: testwid et la |
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90 | ; procedure associee, testwid_event. |
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91 | ; |
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92 | ; MODIFICATION HISTORY:Sebastien Masson (smasson@lodyc.jussieu.fr) |
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93 | ; 6/9/1999 |
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94 | ; |
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95 | ;- |
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96 | ;------------------------------------------------------------ |
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97 | ;------------------------------------------------------------ |
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98 | ;------------------------------------------------------------ |
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99 | ; PRO testwid_event, event |
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100 | ; ; help, event, /STRUCT |
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101 | ; DroplistId = widget_info(event.top,find_by_uname = 'c''est lui') |
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102 | ; widget_control, event.id, get_uvalue=uval |
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103 | ; if n_elements(uval) EQ 0 then return |
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104 | ; case uval of |
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105 | ; 'done':widget_control, event.top, /destroy |
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106 | ; 'dynamic_resize':BEGIN |
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107 | ; widget_control, event.id, get_value = value |
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108 | ; widget_control, DroplistId, set_value = {dynamic_resize:value} |
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109 | ; END |
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110 | ; 'droplist_select':BEGIN |
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111 | ; widget_control, event.id, get_value = value |
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112 | ; widget_control, DroplistId, set_value = {droplist_select:value} |
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113 | ; END |
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114 | ; 'value':BEGIN |
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115 | ; widget_control, event.id, get_value = value |
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116 | ; widget_control, DroplistId, set_value = value |
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117 | ; END |
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118 | ; 'get':BEGIN |
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119 | ; widget_control, DroplistId, get_value = value |
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120 | ; help, value, /struct |
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121 | ; END |
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122 | ; ELSE: |
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123 | ; endcase |
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124 | ; return |
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125 | ; end |
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126 | ; PRO testwid, _extra = ex |
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127 | ; base=widget_base(/COLUMN) |
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128 | ; print, 'base=', base |
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129 | ; nothing = widget_label(base, value = 'beginning of the test') |
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130 | ; ; |
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131 | ; nothing = cw_droplist_pm(base, _extra = ex, uname = 'c''est lui', uvalue = 'c''est lui') |
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132 | ; print, 'cw_droplist_pm ID =', nothing |
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133 | ; ; |
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134 | ; nothing = widget_label(base, value = 'end of the test') |
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135 | ; nothing = widget_text(base, value = '0', uvalue = 'dynamic_resize', /editable) |
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136 | ; nothing = widget_text(base, value = '10', uvalue = 'droplist_select', /editable) |
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137 | ; nothing = widget_text(base, value = '5', uvalue = 'value', /editable) |
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138 | ; nothing = widget_button(base, value = 'get', uvalue = 'get') |
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139 | ; nothing = widget_button(base, value = 'done', uvalue = 'done') |
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140 | ; widget_control, base, /REALIZE |
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141 | ; xmanager,'testwid', base |
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142 | ; return |
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143 | ; end |
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144 | ;---------------------------------------------------------------------- |
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145 | PRO cw_droplist_pm_set_value, id, value |
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146 | DroplistId = widget_info(id,find_by_uname = 'Droplist') |
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147 | if size(value, /type) eq 8 then BEGIN ; this is a structure |
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148 | tagnames = tag_names(value) |
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149 | for tag = 0, n_tags(value)-1 do begin |
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150 | case strtrim(strlowcase(tagnames[tag]), 2) of |
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151 | 'dynamic_resize':widget_control, DroplistId, dynamic_resize = value.dynamic_resize |
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152 | 'droplist_select':widget_control, DroplistId, set_droplist_select = value.droplist_select |
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153 | 'value':widget_control, DroplistId, set_value = value.value |
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154 | ELSE:ras = report('mauvais nom de l''argument de la structure ds cw_droplist_pm_set_value') |
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155 | endcase |
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156 | endfor |
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157 | ENDIF ELSE widget_control, DroplistId, set_value = value |
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158 | return |
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159 | end |
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160 | ;---------------------------------------------------------------------- |
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161 | FUNCTION cw_droplist_pm_get_value, id |
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162 | DroplistId = widget_info(id,find_by_uname = 'Droplist') |
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163 | return, {droplist_number:widget_info(DroplistId, /droplist_number) $ |
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164 | , droplist_select:widget_info(DroplistId, /droplist_select) $ |
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165 | , dynamic_resize:widget_info(DroplistId, /dynamic_resize)} |
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166 | end |
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167 | ;---------------------------------------------------------------------- |
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168 | FUNCTION cw_droplist_pm_event, event |
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169 | widget_control, event.id, get_uvalue=uval |
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170 | ; |
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171 | if uval EQ 'Droplist' then $ |
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172 | return, {CW_DROPLIST_PM, ID:event.handler, TOP:event.top, HANDLER:0L $ |
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173 | , INDEX:event.index, OUT:0} |
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174 | ; |
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175 | DroplistId = widget_info(event.handler,find_by_uname = 'Droplist') |
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176 | index = widget_info(DroplistId, /droplist_select) |
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177 | case uval OF |
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178 | 'plus':BEGIN |
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179 | indexmax = widget_info(DroplistId, /droplist_number)-1 |
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180 | if index NE indexmax then widget_control, DroplistId,set_droplist_select = index+1 |
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181 | return, {CW_DROPLIST_PM, ID:event.handler, TOP:event.top, HANDLER:0L $ |
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182 | , INDEX:(index+1) < indexmax, OUT:long(index EQ indexmax)} |
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183 | END |
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184 | 'minus':BEGIN |
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185 | if index NE 0 then widget_control, DroplistId,set_droplist_select = index-1 |
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186 | return, {CW_DROPLIST_PM, ID:event.handler, TOP:event.top, HANDLER:0L $ |
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187 | , INDEX:0 > (index-1), OUT:-long(index EQ 0)} |
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188 | END |
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189 | endcase |
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190 | end |
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191 | ;---------------------------------------------------------------------- |
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192 | FUNCTION cw_droplist_pm, parent,UVALUE = uvalue, UNAME = uname, ROW = row, COLUMN = column, _extra = ex |
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193 | |
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194 | IF (N_PARAMS() NE 1) THEN MESSAGE, 'Incorrect number of arguments' |
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195 | ON_ERROR, 2 ;return to caller |
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196 | ; cheking for row and column keywords |
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197 | row = keyword_set(row)*(1-keyword_set(column)) |
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198 | column = keyword_set(column)*(1-keyword_set(row))+(keyword_set(column) EQ row) |
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199 | if NOT keyword_set(uvalue) then uvalue = '' |
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200 | if NOT keyword_set(uname) then uname = '' |
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201 | ; |
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202 | base = widget_base(parent, space = 1, xpad = 1, ypad = 1, ROW = row, COLUMN = column $ |
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203 | , EVENT_FUNC = 'cw_droplist_pm_event' $ |
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204 | , FUNC_GET_VALUE='cw_droplist_pm_get_value' $ |
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205 | , PRO_SET_VALUE='cw_droplist_pm_set_value' $ |
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206 | , UVALUE = uvalue, UNAME = uname, _extra = ex) |
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207 | ; |
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208 | if keyword_set(row) THEN nothing = widget_button(base,value= '-', uvalue= 'minus') |
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209 | nothing = widget_droplist(base, UVALUE = 'Droplist', UNAME = 'Droplist', _extra = ex) |
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210 | if keyword_set(column) then begin |
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211 | base1 = widget_base(base, /row, /align_center, space = 1, xpad = 1, ypad = 1) |
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212 | nothing = widget_button(base1,value= '-', uvalue= 'minus', xsize = 20, ysize = 20) |
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213 | nothing = widget_button(base1,value= '+', uvalue= 'plus', xsize = 20, ysize = 20) |
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214 | ENDIF ELSE nothing = widget_button(base,value= '+', uvalue= 'plus') |
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215 | ; |
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216 | ; widget_control,base,/realize |
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217 | ; |
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218 | return, base |
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219 | end |
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