How to implement TimetablelLayoutManager

Transcript

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2. MoyuruAizawa Moyuru Aizawa
 Software engineer of CATS Div. CyberAgent Inc. 
 Previously at Pairs Div. Eureka Inc.
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39. (0 until itemCount).forEach { val periodInfo = periodLookUp(it) val column = columns.getOrPut(periodInfo.columnNumber) { ArrayList() } val period = Period( TimeUnit.MILLISECONDS.toMinutes(periodInfo.startUnixMillis).toInt(), TimeUnit.MILLISECONDS.toMinutes(periodInfo.endUnixMillis).toInt(), periodInfo.columnNumber, adapterPosition = it, positionInColumn = column.size ) periods.add(period) column.add(period) if (it == 0) { firstStartUnixMin = period.startUnixMin lastEndUnixMin = period.endUnixMin } else { firstStartUnixMin = min(period.startUnixMin, firstStartUnixMin) lastEndUnixMin = max(period.endUnixMin, lastEndUnixMin) } } ֤QFSJPEͷ৘ใऩू
40. (0 until itemCount).forEach { val periodInfo = periodLookUp(it) val column = columns.getOrPut(periodInfo.columnNumber) { ArrayList() } val period = Period( TimeUnit.MILLISECONDS.toMinutes(periodInfo.startUnixMillis).toInt(), TimeUnit.MILLISECONDS.toMinutes(periodInfo.endUnixMillis).toInt(), periodInfo.columnNumber, adapterPosition = it, positionInColumn = column.size ) periods.add(period) column.add(period) if (it == 0) { firstStartUnixMin = period.startUnixMin lastEndUnixMin = period.endUnixMin } else { firstStartUnixMin = min(period.startUnixMin, firstStartUnixMin) lastEndUnixMin = max(period.endUnixMin, lastEndUnixMin) } } ֤QFSJPEͷ৘ใऩू
41. (0 until itemCount).forEach { val periodInfo = periodLookUp(it) val column = columns.getOrPut(periodInfo.columnNumber) { ArrayList() } val period = Period( TimeUnit.MILLISECONDS.toMinutes(periodInfo.startUnixMillis).toInt(), TimeUnit.MILLISECONDS.toMinutes(periodInfo.endUnixMillis).toInt(), periodInfo.columnNumber, adapterPosition = it, positionInColumn = column.size ) periods.add(period) column.add(period) if (it == 0) { firstStartUnixMin = period.startUnixMin lastEndUnixMin = period.endUnixMin } else { firstStartUnixMin = min(period.startUnixMin, firstStartUnixMin) lastEndUnixMin = max(period.endUnixMin, lastEndUnixMin) } } ֤QFSJPEͷ৘ใऩू
42. anchor.leftColumn = 0 val columnCount = columns.size() val offsetY = parentTop var offsetX = parentLeft for (columnNumber in 0 until columnCount) { offsetX += addColumn( columns[columnNumber].first(), offsetX, offsetY, true, recycler) anchor.rightColumn = columnNumber if (offsetX > parentRight) break } *OJUJBM
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43. val range = startPeriod.positionInColumn until column.size for (i in range) { val period = column[i] val (width, height) = addPeriod(period, direction, offsetX, offsetY, recycler) offsetY += height columnWidth = width if (i == startPeriod.positionInColumn) anchor.top.put(columnNum, period.adapterPosition) anchor.bottom.put(columnNum, period.adapterPosition) if (offsetY > parentBottom) break } *OJUJBM
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44. val range = startPeriod.positionInColumn until column.size for (i in range) { val period = column[i] val (width, height) = addPeriod(period, direction, offsetX, offsetY, recycler) offsetY += height columnWidth = width if (i == startPeriod.positionInColumn) anchor.top.put(columnNum, period.adapterPosition) anchor.bottom.put(columnNum, period.adapterPosition) if (offsetY > parentBottom) break } *OJUJBM
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45. anchor.leftColumn = 0 val columnCount = columns.size() val offsetY = parentTop var offsetX = parentLeft for (columnNumber in 0 until columnCount) { offsetX += addColumn( columns[columnNumber].first(), offsetX, offsetY, true, recycler) anchor.rightColumn = columnNumber if (offsetX > parentRight) break } *OJUJBM
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47. val bottomView = findBottomView() ?: return 0 val period = periods.getOrNull(bottomView.adapterPosition) ?: return 0 val bottom = getDecoratedBottom(bottomView) if (period.endUnixMin == lastEndUnixMin) if (bottom == parentBottom) 0 else min(dy, bottom - parentBottom) else dy εΫϩʔϧྔͷܭࢉ
48. val bottomView = findBottomView() ?: return 0 val period = periods.getOrNull(bottomView.adapterPosition) ?: return 0 val bottom = getDecoratedBottom(bottomView) if (period.endUnixMin == lastEndUnixMin) if (bottom == parentBottom) 0 else min(dy, bottom - parentBottom) else dy εΫϩʔϧྔͷܭࢉ
49. val bottomView = findBottomView() ?: return 0 val period = periods.getOrNull(bottomView.adapterPosition) ?: return 0 val bottom = getDecoratedBottom(bottomView) if (period.endUnixMin == lastEndUnixMin) if (bottom == parentBottom) 0 else min(dy, bottom - parentBottom) else dy εΫϩʔϧྔͷܭࢉ
50. val bottomView = findBottomView() ?: return 0 val period = periods.getOrNull(bottomView.adapterPosition) ?: return 0 val bottom = getDecoratedBottom(bottomView) if (period.endUnixMin == lastEndUnixMin) if (bottom == parentBottom) 0 else min(dy, bottom - parentBottom) else dy εΫϩʔϧྔͷܭࢉ
51. override fun scrollVerticallyBy( dy: Int, recycler: Recycler, state: State ): Int { if (dy == 0) return 0 val actualDy = calculateVerticallyScrollAmount(dy) if (actualDy == 0) return 0 offsetChildrenVertical(-actualDy) … } $IJME
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52. override fun scrollVerticallyBy( dy: Int, recycler: Recycler, state: State ): Int { if (dy == 0) return 0 val actualDy = calculateVerticallyScrollAmount(dy) if (actualDy == 0) return 0 offsetChildrenVertical(-actualDy) … } $IJME
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53. (anchor.leftColumn..anchor.rightColumn) .forEach { columnNum -> val column = columns[columnNum] val top = periods[anchor.top[columnNum]] val bottom = periods[anchor.bottom[columnNum]] column.subList( top.positionInColumn, bottom.positionInColumn ).forEach { val view = findViewByPosition(it.adapterPosition)?: return if (getDecoratedBottom(view) >= parentTop) return removeAndRecycleView(view, recycler) val belowPosition = column[it.positionInColumn + 1] .adapterPosition anchor.top.put(columnNum, belowPosition) } } ը໘͔ΒͰͨDIJME
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54. (anchor.leftColumn..anchor.rightColumn) .forEach { columnNum -> val column = columns[columnNum] val top = periods[anchor.top[columnNum]] val bottom = periods[anchor.bottom[columnNum]] column.subList( top.positionInColumn, bottom.positionInColumn ).forEach { val view = findViewByPosition(it.adapterPosition)?: return if (getDecoratedBottom(view) >= parentTop) return removeAndRecycleView(view, recycler) val belowPosition = column[it.positionInColumn + 1] .adapterPosition anchor.top.put(columnNum, belowPosition) } } ը໘͔ΒͰͨDIJME
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55. (anchor.leftColumn..anchor.rightColumn) .forEach { columnNum -> val column = columns[columnNum] val top = periods[anchor.top[columnNum]] val bottom = periods[anchor.bottom[columnNum]] column.subList( top.positionInColumn, bottom.positionInColumn ).forEach { val view = findViewByPosition(it.adapterPosition)?: return if (getDecoratedBottom(view) >= parentTop) return removeAndRecycleView(view, recycler) val belowPosition = column[it.positionInColumn + 1] .adapterPosition anchor.top.put(columnNum, belowPosition) } } ը໘͔ΒͰͨDIJME
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56. (anchor.leftColumn..anchor.rightColumn) .forEach { columnNum -> val column = columns[columnNum] val top = periods[anchor.top[columnNum]] val bottom = periods[anchor.bottom[columnNum]] column.subList( top.positionInColumn, bottom.positionInColumn ).forEach { val view = findViewByPosition(it.adapterPosition)?: return if (getDecoratedBottom(view) >= parentTop) return removeAndRecycleView(view, recycler) val belowPosition = column[it.positionInColumn + 1] .adapterPosition anchor.top.put(columnNum, belowPosition) } } ը໘͔ΒͰͨDIJME
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57. (anchor.leftColumn..anchor.rightColumn) .forEach { columnNum -> val column = columns[columnNum] val top = periods[anchor.top[columnNum]] val bottom = periods[anchor.bottom[columnNum]] column.subList( top.positionInColumn, bottom.positionInColumn ).forEach { val view = findViewByPosition(it.adapterPosition)?: return if (getDecoratedBottom(view) >= parentTop) return removeAndRecycleView(view, recycler) val belowPosition = column[it.positionInColumn + 1] .adapterPosition anchor.top.put(columnNum, belowPosition) } } ը໘͔ΒͰͨDIJME
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58. anchor.bottom.forEach { columnNum, position -> val view = findViewByPosition(position) ?: return@forEach val bottom = getDecoratedBottom(view) if (bottom < parentBottom) { val left = getDecoratedLeft(view) val period = periods.getOrNull(position) ?: return@forEach val nextPeriod = columns.get(columnNum) .getOrNull(period.positionInColumn + 1) ?: return@forEach addPeriodsToColumn(nextPeriod, left, bottom, true, recycler) } } ۭ͖εϖʔεʹWJFXΛ௥Ճ
59. anchor.bottom.forEach { columnNum, position -> val view = findViewByPosition(position) ?: return@forEach val bottom = getDecoratedBottom(view) if (bottom < parentBottom) { val left = getDecoratedLeft(view) val period = periods.getOrNull(position) ?: return@forEach val nextPeriod = columns.get(columnNum) .getOrNull(period.positionInColumn + 1) ?: return@forEach addPeriodsToColumn(nextPeriod, left, bottom, true, recycler) } } ۭ͖εϖʔεʹWJFXΛ௥Ճ
60. anchor.bottom.forEach { columnNum, position -> val view = findViewByPosition(position) ?: return@forEach val bottom = getDecoratedBottom(view) if (bottom < parentBottom) { val left = getDecoratedLeft(view) val period = periods.getOrNull(position) ?: return@forEach val nextPeriod = columns.get(columnNum) .getOrNull(period.positionInColumn + 1) ?: return@forEach addPeriodsToColumn(nextPeriod, left, bottom, true, recycler) } } ۭ͖εϖʔεʹWJFXΛ௥Ճ
61. anchor.bottom.forEach { columnNum, position -> val view = findViewByPosition(position) ?: return@forEach val bottom = getDecoratedBottom(view) if (bottom < parentBottom) { val left = getDecoratedLeft(view) val period = periods.getOrNull(position) ?: return@forEach val nextPeriod = columns.get(columnNum) .getOrNull(period.positionInColumn + 1) ?: return@forEach addPeriodsToColumn(nextPeriod, left, bottom, true, recycler) } } ۭ͖εϖʔεʹWJFXΛ௥Ճ
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