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143 lines
3.9 KiB
143 lines
3.9 KiB
--[[
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ListView2.lua
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@Author : DengSir (tdaddon@163.com)
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@Link : https://dengsir.github.io
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]]
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local MAJOR, MINOR = 'ListView', 2
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local ListView = LibStub('tdGUI-1.0'):NewClass(MAJOR, MINOR, 'ScrollFrame.BasicHybridScrollFrameTemplate', 'Refresh', 'View', 'Select')
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if not ListView then return end
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function ListView:Constructor(parent)
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self._buttons = {}
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self.update = self.Refresh
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self:SetScript('OnSizeChanged', self.OnSizeChanged)
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self.scrollBar:ClearAllPoints()
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self.scrollBar:SetPoint('TOPRIGHT', 0, -18)
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self.scrollBar:SetPoint('BOTTOMRIGHT', 0, 18)
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self.scrollBar.doNotHide = true
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self:SetSelectMode('NONE')
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self:ClearAllPoints()
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end
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function ListView:OnSizeChanged()
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self._maxCount = nil
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self._needUpdateScroll = true
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self.scrollChild:SetWidth(self:GetWidth() - 18)
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self:Refresh()
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end
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function ListView:Update()
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if self._needUpdateLayout then
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self:UpdateLayout()
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self._needUpdateLayout = nil
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end
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if self._needUpdateScroll then
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self:UpdateScroll()
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self._needUpdateScroll = nil
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end
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self:UpdateItems()
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end
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function ListView:UpdateLayout()
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for i in ipairs(self._buttons) do
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self:UpdateItemPosition(i)
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end
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end
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function ListView:UpdateScroll()
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local maxCount = self:GetMaxCount()
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local buttonHeight = self:GetButtonHeight()
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local maxHeight = maxCount * buttonHeight
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self.buttonHeight = buttonHeight
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self:GetScrollChild():SetSize(self:GetWidth(), maxHeight)
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self:SetVerticalScroll(0)
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self:UpdateScrollChildRect()
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self.scrollBar:SetMinMaxValues(0, maxHeight)
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self.scrollBar.buttonHeight = buttonHeight
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self.scrollBar:SetValueStep(buttonHeight)
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self.scrollBar:SetStepsPerPage(maxCount - 2)
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self.scrollBar:SetValue(0)
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end
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function ListView:UpdateItems()
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local offset = self:GetOffset()
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local itemCount = self:GetItemCount()
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local maxCount = self:GetMaxCount()
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local itemHeight = self:GetItemHeight()
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local itemSpacing = self:GetItemSpacing()
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local top, bottom = select(3, self:GetPadding())
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local realCount = min(itemCount, maxCount)
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for i = 1, realCount do
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local index = offset + i
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local button = self:GetButton(i)
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if self:GetItem(index) then
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button:SetID(index)
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button:SetHeight(itemHeight)
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button:Show()
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button:FireFormat()
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else
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button:Hide()
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end
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end
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for i = realCount + 1, #self._buttons do
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self:GetButton(i):Hide()
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end
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HybridScrollFrame_Update(self, self:GetItemCount() * self:GetButtonHeight() + top + bottom , self:GetHeight());
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end
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function ListView:UpdateItemPosition(i)
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local itemSpacing = self:GetItemSpacing()
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local left, right, top = self:GetPadding()
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local button = self:GetButton(i)
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button:ClearAllPoints()
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if i == 1 then
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button:SetPoint('TOPLEFT', left, -top)
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button:SetPoint('TOPRIGHT', -18-right, -top)
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else
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button:SetPoint('TOPLEFT', self:GetButton(i-1), 'BOTTOMLEFT', 0, -itemSpacing)
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button:SetPoint('TOPRIGHT', self:GetButton(i-1), 'BOTTOMRIGHT', 0, -itemSpacing)
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end
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end
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function ListView:GetMaxCount()
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if not self._maxCount then
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local itemHeight = self:GetItemHeight()
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local itemSpacing = self:GetItemSpacing()
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local height = self:GetHeight()
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local _, _, top, bottom = self:GetPadding()
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self._maxCount = math.ceil((height - top - bottom) / (itemHeight + itemSpacing)) + 1
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end
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return self._maxCount
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end
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function ListView:GetButtonHeight()
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return self:GetItemHeight() + self:GetItemSpacing()
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end
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---- override
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function ListView:SetItemHeight(itemHeight)
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self._itemHeight = itemHeight
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self._needUpdateScroll = true
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end
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function ListView:SetItemSpacing(itemSpacing)
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self._itemSpacing = itemSpacing
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self._needUpdateScroll = true
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end
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ListView.GetOffset = HybridScrollFrame_GetOffset
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