mirror of
https://github.com/kepler155c/opus
synced 2024-06-16 18:30:01 +00:00
7224d441ca
* canvas overhaul * minor tweaks * list mode for overview * bugfixes + tweaks for editor 2.0 * minor tweaks * more editor work * refactor + new transitions * use layout() where appropriate and cleanup * mouse triple click + textEntry scroll ind * cleanup * cleanup + theme editor * color rework + cleanup * changes for deprecated ui methods * can now use named colors
78 lines
1.9 KiB
Lua
78 lines
1.9 KiB
Lua
local class = require('opus.class')
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local UI = require('opus.ui')
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local Util = require('opus.util')
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UI.ScrollingGrid = class(UI.Grid)
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UI.ScrollingGrid.defaults = {
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UIElement = 'ScrollingGrid',
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scrollOffset = 0,
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marginRight = 1,
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}
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function UI.ScrollingGrid:postInit()
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self.scrollBar = UI.ScrollBar()
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end
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function UI.ScrollingGrid:drawRows()
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UI.Grid.drawRows(self)
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self.scrollBar:draw()
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end
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function UI.ScrollingGrid:getViewArea()
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local y = 1
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if not self.disableHeader then
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y = y + self.headerHeight
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end
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return {
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static = true, -- the container doesn't scroll
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y = y, -- scrollbar Y
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height = self.pageSize, -- viewable height
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totalHeight = Util.size(self.values), -- total height
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offsetY = self.scrollOffset, -- scroll offset
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fill = not self.disableHeader and self.headerBackgroundColor,
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}
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end
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function UI.ScrollingGrid:getStartRow()
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local ts = Util.size(self.values)
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if ts < self.pageSize then
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self.scrollOffset = 0
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end
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return self.scrollOffset + 1
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end
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function UI.ScrollingGrid:setIndex(index)
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if index < self.scrollOffset + 1 then
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self.scrollOffset = index - 1
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elseif index - self.scrollOffset > self.pageSize then
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self.scrollOffset = index - self.pageSize
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end
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if self.scrollOffset < 0 then
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self.scrollOffset = 0
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else
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local ts = Util.size(self.values)
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if self.pageSize + self.scrollOffset + 1 > ts then
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self.scrollOffset = math.max(0, ts - self.pageSize)
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end
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end
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UI.Grid.setIndex(self, index)
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end
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function UI.ScrollingGrid.example()
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local values = { }
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for i = 1, 20 do
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table.insert(values, { key = 'key' .. i, value = 'value' .. i })
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end
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return UI.ScrollingGrid {
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values = values,
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sortColumn = 'key',
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columns = {
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{ heading = 'key', key = 'key' },
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{ heading = 'value', key = 'value' },
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},
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accelerators = {
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grid_select = 'custom_select',
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}
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}
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end |