mirror of https://github.com/status-im/nimqml.git
77 lines
1.9 KiB
Nim
77 lines
1.9 KiB
Nim
import NimQml, Tables, random
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type
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Point = object
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x: int
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y: int
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QtObject:
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type
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MyListModel* = ref object of QAbstractTableModel
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points*: seq[Point]
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maxX: int
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maxY: int
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proc delete(self: MyListModel) =
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self.QAbstractTableModel.delete
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proc setup(self: MyListModel) =
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self.QAbstractTableModel.setup
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method rowCount(self: MyListModel, index: QModelIndex = nil): int =
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return self.points.len
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method columnCount(self: MyListModel, index: QModelIndex = nil): int =
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return 2
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method data(self: MyListModel, index: QModelIndex, role: int): QVariant =
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result = nil
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if not index.isValid or index.row < 0 or index.row >= self.rowCount() or index.column < 0 or index.column >= self.columnCount():
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return
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if role == 0:
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let point = self.points[index.row]
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if index.column == 0:
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return newQVariant(point.x)
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elif index.column == 1:
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return newQVariant(point.y)
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proc getMaxY(self: MyListModel): int {.slot.} =
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return self.maxY
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proc maxYChanged(self: MyListModel, value: int) {.signal.}
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QtProperty[int] maxY:
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read = getMaxY
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notify = maxYChanged
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proc getMaxX(self: MyListModel): int {.slot.} =
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return self.maxX
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proc maxXChanged(self: MyListModel, value: int) {.signal.}
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QtProperty[int] maxX:
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read = getMaxX
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notify = maxXChanged
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proc addRandomPoint(self: MyListModel) {.slot.} =
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let pos = self.points.len
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self.beginInsertRows(newQModelIndex(), pos, pos)
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let x = self.maxX + 1
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let y = random(50)
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if x > self.maxX:
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self.maxX = x
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self.maxXChanged(x)
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if y > self.maxY:
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self.maxY = y
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self.maxYChanged(y)
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self.points.add(Point(x: x, y: y))
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self.endInsertRows()
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proc newMyListModel*(): MyListModel =
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new(result, delete)
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result.setup
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result.points = @[]
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result.maxX = 0
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result.maxY = 50
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result.addRandomPoint()
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