ffd187dc17
When clicked, Button() and Input() return the respective mouse button
constant ('l', 'r', 'm') instead of just true.
When activated by keyboard, Button() and Input() return 'return'.
Otherwise Button() and Input() return false.
102 lines
3.1 KiB
Lua
102 lines
3.1 KiB
Lua
--[[
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Copyright (c) 2012 Matthias Richter
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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Except as contained in this notice, the name(s) of the above copyright holders
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shall not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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]]--
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local key,code = nil, -1
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local focus, lastwidget
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local NO_WIDGET = {}
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local cycle = {
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-- binding = {key = key, modifier1, modifier2, ...} XXX: modifiers are OR-ed!
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prev = {key = 'tab', 'lshift', 'rshift'},
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next = {key = 'tab'},
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}
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local function pressed(...)
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key, code = ...
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assert(type(key) == 'string', 'Invalid argument `key`. Expected string, got ' .. type(key))
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assert(type(code) == 'number', 'Invalid argument `code`. Expected number, got ' .. type(code))
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end
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local function setFocus(id) focus = id end
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local function disable() focus = NO_WIDGET end
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local function clearFocus() focus = nil end
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local function hasFocus(id) return id == focus end
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local function getFocus() return focus end
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local function tryGrab(id)
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if not focus then
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setFocus(id)
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end
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end
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local function isBindingDown(bind)
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local modifiersDown = #bind == 0 or love.keyboard.isDown(unpack(bind))
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return key == bind.key and modifiersDown
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end
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local function makeCyclable(id)
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tryGrab(id)
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if hasFocus(id) then
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if isBindingDown(cycle.prev) then
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setFocus(lastwidget)
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key = nil
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elseif isBindingDown(cycle.next) then
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setFocus(nil)
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key = nil
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end
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end
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lastwidget = id
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end
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local function pressedOn(id, k)
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return (k or 'return') == key and hasFocus(id) and k
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end
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local function beginFrame()
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-- for future use?
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end
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local function endFrame()
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key, code = nil, -1
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end
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return setmetatable({
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cycle = cycle,
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pressed = pressed,
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tryGrab = tryGrab,
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isBindingDown = isBindingDown,
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setFocus = setFocus,
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getFocus = getFocus,
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clearFocus = clearFocus,
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hasFocus = hasFocus,
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makeCyclable = makeCyclable,
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pressedOn = pressedOn,
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disable = disable,
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enable = clearFocus,
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beginFrame = beginFrame,
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endFrame = endFrame,
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}, {__index = function(_,k) return ({key = key, code = code})[k] end})
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