58 lines
1.6 KiB
Forth
Executable File
58 lines
1.6 KiB
Forth
Executable File
#! /usr/bin/env ueforth
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\ Copyright 2022 Bradley D. Nelson
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\
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\ Licensed under the Apache License, Version 2.0 (the "License");
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\ you may not use this file except in compliance with the License.
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\ You may obtain a copy of the License at
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\
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\ http://www.apache.org/licenses/LICENSE-2.0
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\
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\ Unless required by applicable law or agreed to in writing, software
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\ distributed under the License is distributed on an "AS IS" BASIS,
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\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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\ See the License for the specific language governing permissions and
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\ limitations under the License.
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graphics
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-1 -1 window
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$ff0000 constant red
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$ffff00 constant yellow
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$00ff00 constant green
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$0000ff constant blue
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$000000 constant black
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$ffffff constant white
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$cccccc constant gray
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$777777 constant dark-gray
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: run
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begin
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poll
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IDLE event = if
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black to color 0 0 width height box
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g{
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vertical-flip
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640 480 viewport
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gray to color
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0 0 640 480 box
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dark-gray to color
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0 0 400 300 box
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g{
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mouse-x mouse-y screen>g translate
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LEFT-BUTTON pressed? if
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g{ -100 -100 translate red to color -50 -50 100 100 box }g
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g{ 100 -100 translate yellow to color -50 -50 100 100 box }g
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g{ -100 100 translate green to color -50 -50 100 100 box }g
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g{ 100 100 translate blue to color -50 -50 100 100 box }g
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then
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g{ white to color -50 -50 100 100 box }g
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}g
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}g
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flip
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then
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event FINISHED = until
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bye
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;
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run
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