77 lines
2.3 KiB
Lua
77 lines
2.3 KiB
Lua
function UITextEdit:onStyleApply(styleName, styleNode)
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for name,value in pairs(styleNode) do
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if name == 'vertical-scrollbar' then
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addEvent(function()
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self:setVerticalScrollBar(self:getParent():getChildById(value))
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end)
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elseif name == 'horizontal-scrollbar' then
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addEvent(function()
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self:setHorizontalScrollBar(self:getParent():getChildById(value))
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end)
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end
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end
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end
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function UITextEdit:onMouseWheel(mousePos, mouseWheel)
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if self.verticalScrollBar and self:isMultiline() then
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if mouseWheel == MouseWheelUp then
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self.verticalScrollBar:decrement()
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else
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self.verticalScrollBar:increment()
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end
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elseif self.horizontalScrollBar then
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if mouseWheel == MouseWheelUp then
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self.horizontalScrollBar:increment()
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else
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self.horizontalScrollBar:decrement()
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end
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end
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return true
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end
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function UITextEdit:onTextAreaUpdate(virtualOffset, virtualSize, totalSize)
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self:updateScrollBars()
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end
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function UITextEdit:setVerticalScrollBar(scrollbar)
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self.verticalScrollBar = scrollbar
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self.verticalScrollBar.onValueChange = function(scrollbar, value)
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local virtualOffset = self:getTextVirtualOffset()
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virtualOffset.y = value
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self:setTextVirtualOffset(virtualOffset)
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end
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self:updateScrollBars()
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end
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function UITextEdit:setHorizontalScrollBar(scrollbar)
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self.horizontalScrollBar = scrollbar
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self.horizontalScrollBar.onValueChange = function(scrollbar, value)
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local virtualOffset = self:getTextVirtualOffset()
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virtualOffset.x = value
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self:setTextVirtualOffset(virtualOffset)
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end
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self:updateScrollBars()
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end
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function UITextEdit:updateScrollBars()
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local scrollSize = self:getTextTotalSize()
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local scrollWidth = math.max(scrollSize.width - self:getTextVirtualSize().width, 0)
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local scrollHeight = math.max(scrollSize.height - self:getTextVirtualSize().height, 0)
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local scrollbar = self.verticalScrollBar
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if scrollbar then
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scrollbar:setMinimum(0)
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scrollbar:setMaximum(scrollHeight)
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scrollbar:setValue(self:getTextVirtualOffset().y)
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end
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local scrollbar = self.horizontalScrollBar
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if scrollbar then
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scrollbar:setMinimum(0)
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scrollbar:setMaximum(scrollWidth)
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scrollbar:setValue(self:getTextVirtualOffset().x)
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end
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end
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-- todo: ontext change, focus to cursor |