examples/calculator/src/scientific/scientific.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 # Extends the portable calculator app with scientific operations
  16 module scientific is
  17         app_name "app.nit Calc Sci"
  18         app_namespace "org.nitlanguage.scientific_calculator"
  19         app_files
  20 end
  21
  22 import calculator
  23
  24 redef class CalculatorWindow
  25         init
  26         do
  27                 # All the button labels, row by row
  28                 var rows = [["√",  "x²", "xⁿ", "e"  ],
  29                             ["log","ln", "%",  "x!" ],
  30                             ["π",  "sin","cos","tan"]]
  31
  32                 for row in rows do
  33                         var row_layout = new HorizontalLayout(parent=layout)
  34
  35                         for op in row do
  36                                 var but = new Button(parent=row_layout, text=op)
  37                                 buttons[op] = but
  38                         end
  39                 end
  40
  41                 super
  42         end
  43 end