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Check events that console window size changed on Windows

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This commit is contained in:
aycabta 2019-08-29 21:11:53 +09:00
parent 3a425c7623
commit a39b26b594
1 changed files with 17 additions and 0 deletions
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17
lib/reline/windows.rb
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@ -51,7 +51,9 @@ class Reline::Windows
VK_MENU = 0x12
VK_SHIFT = 0x10
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
WINDOW_BUFFER_SIZE_EVENT = 0x04
@@getwch = Win32API.new('msvcrt', '_getwch', [], 'I')
@@kbhit = Win32API.new('msvcrt', '_kbhit', [], 'I')
@@GetKeyState = Win32API.new('user32', 'GetKeyState', ['L'], 'L')
@ -61,6 +63,9 @@ class Reline::Windows
@@FillConsoleOutputCharacter = Win32API.new('kernel32', 'FillConsoleOutputCharacter', ['L', 'L', 'L', 'L', 'P'], 'L')
@@ScrollConsoleScreenBuffer = Win32API.new('kernel32', 'ScrollConsoleScreenBuffer', ['L', 'P', 'P', 'L', 'P'], 'L')
@@hConsoleHandle = @@GetStdHandle.call(STD_OUTPUT_HANDLE)
@@hConsoleInputHandle = @@GetStdHandle.call(STD_INPUT_HANDLE)
@@GetNumberOfConsoleInputEvents = Win32API.new('kernel32', 'GetNumberOfConsoleInputEvents', ['L', 'P'], 'L')
@@ReadConsoleInput = Win32API.new('kernel32', 'ReadConsoleInput', ['L', 'P', 'L', 'P'], 'L')
@@buf = []
def self.getwch
@ -81,6 +86,17 @@ class Reline::Windows
end
def self.getc
num_of_events = 0.chr * 8
while @@GetNumberOfConsoleInputEvents.(@@hConsoleInputHandle, num_of_events) != 0 and num_of_events.unpack('L').first > 0
input_record = 0.chr * 18
read_event = 0.chr * 4
if @@ReadConsoleInput.(@@hConsoleInputHandle, input_record, 1, read_event) != 0
event = input_record[0, 2].unpack('s*').first
if event == WINDOW_BUFFER_SIZE_EVENT
@@winch_handler.()
end
end
end
unless @@buf.empty?
return @@buf.shift
end
@ -182,6 +198,7 @@ class Reline::Windows
end
def self.set_winch_handler(&handler)
@@winch_handler = handler
end
def self.prep