public void Do(ScrollData targetScrollData, bool animated)
{
scrollSystem.ScrollRect.StopMovement();
state = animated ? State.Animated : State.Directly;
this.targetScrollData = targetScrollData;
this.targetNormalizedPos = 0;
}
public void Do(float targetNormalizedPos, bool animated)
{
scrollSystem.ScrollRect.StopMovement();
state = animated ? State.Animated : State.Directly;
this.targetScrollData = null;
targetNormalizedPos = Mathf.Clamp01(targetNormalizedPos);
if (scrollSystem.scrollDirection == ScrollDirection.Vertical)
{
switch (scrollSystem.startCorner)
{
case 0: //Left Up
case 1: //Right Up
this.targetNormalizedPos = 1 - targetNormalizedPos;
break;
case 2: //Left Down
case 3: //Right Down
this.targetNormalizedPos = targetNormalizedPos;
break;
}
}
else
{
switch (scrollSystem.startCorner)
{
case 0: //Left Up
case 2: //Left Down
this.targetNormalizedPos = targetNormalizedPos;
break;
case 1: //Right Up
case 3: //Right Down
this.targetNormalizedPos = 1 - targetNormalizedPos;
break;
}
}
}
private void SetSingleContentDataWhenHorizontal(ScrollData data)
{
data.CalculateSize();
//指定使用新行
if (data.newLine == ScrollLayout.NewLine.None)
{
//发生过偏移，并且这次物体的右边界超过宽度
if (cursorPos.y > border.y && cursorPos.y + data.height > Height - border.y)
{
//那么执行换行操作
cursorPos.y = border.y;
cursorPos.x += maxHeight;
maxHeight = 0;
}
//设置位置
data.SetAnchoredPosition(cursorPos + data.Size / 2);
//更新光标
cursorPos.y += data.height;
//更新最大宽度
if (maxWidth < cursorPos.y)
{
maxWidth = cursorPos.y;
}
//增加间隔
if (data.height > 0)
{
cursorPos.y += spacing.y;
}
//更新最大高度
var curMaxHeight = data.width > 0 ? (data.width + spacing.x) : 0;
if (maxHeight < curMaxHeight)
{
maxHeight = curMaxHeight;
}
}
else
{
//发生过偏移
if (cursorPos.y > border.y)
{
//换行
cursorPos.x += maxHeight;
maxHeight = 0;
}
//指定使用新行
switch (data.newLine)
{
case ScrollLayout.NewLine.Center:
cursorPos.y = Width / 2;
break;
case ScrollLayout.NewLine.LeftOrUp:
cursorPos.y = data.height / 2 + border.y;
break;
case ScrollLayout.NewLine.RightOrDown:
cursorPos.y = Width - data.width / 2 - border.y;
break;
}
//设置位置
data.SetAnchoredPosition(cursorPos + data.width / 2 * Vector2.right);
//换新行
cursorPos.y = border.y;
cursorPos.x += data.width + spacing.x;
}
}
private void AlignScrollDataWhenVertical(ScrollData data)
{
data.CalculateSize();
if (data.newLine == ScrollLayout.NewLine.None)
{
//发生过偏移，并且这次物体的右边界超过宽度
if (cursorPos.x > border.x && cursorPos.x + data.width > Width - border.x)
{
//那么执行换行操作
cursorPos.x = border.x;
cursorPos.y += maxHeight;
maxHeight = 0;
}
//设置位置
data.SetAnchoredPosition(cursorPos + data.Size / 2);
//更新光标
cursorPos.x += data.width;
//更新最大宽度
if (maxWidth < cursorPos.x)
{
maxWidth = cursorPos.x;
}
//增加间隔
if (data.width > 0)
{
cursorPos.x += spacing.x;
}
//更新最大高度
float curMaxHeight = data.height > 0 ? (data.height + spacing.y) : 0;
if (maxHeight < curMaxHeight)
{
maxHeight = curMaxHeight;
}
}
else
{
//发生过偏移
if (cursorPos.x > border.x)
{
//换行
cursorPos.y += maxHeight;
maxHeight = 0;
}
//指定使用新行
switch (data.newLine)
{
case ScrollLayout.NewLine.Center:
cursorPos.x = Width / 2;
break;
case ScrollLayout.NewLine.LeftOrUp:
cursorPos.x = data.width / 2 + border.x;
break;
case ScrollLayout.NewLine.RightOrDown:
cursorPos.x = Width - data.width / 2 - border.x;
break;
}
//设置位置
data.SetAnchoredPosition(cursorPos + data.height / 2 * Vector2.up);
//换新行
cursorPos.x = border.x;
cursorPos.y += data.height + spacing.y;
}
}
public bool Update()
{
//if (!scrollSystem.moveEnable) { return; }
if (state != State.None)
{
if (scrollSystem.scrollDirection == ScrollDirection.Vertical)
{
float offset = scrollSystem.contentSize - scrollSystem.Height;
if (offset <= 0)
{
this.targetNormalizedPos = 0;
}
else
{
if (this.targetScrollData != null)
{
switch (scrollSystem.startCorner)
{
case 0: //Left Up
case 1: //Right Up
this.targetNormalizedPos = 1 - (this.targetScrollData.originPosition.y - this.targetScrollData.height / 2) / offset;
break;
case 2: //Left Down
case 3: //Right Down
this.targetNormalizedPos = (this.targetScrollData.originPosition.y - this.targetScrollData.height / 2) / offset;
break;
}
}
}
}
else
{
float offset = scrollSystem.contentSize - scrollSystem.Width;
if (offset <= 0)
{
this.targetNormalizedPos = 0;
}
else
{
if (this.targetScrollData != null)
{
switch (scrollSystem.startCorner)
{
case 0: //Left Up
case 2: //Left Down
this.targetNormalizedPos = (this.targetScrollData.originPosition.x - this.targetScrollData.width / 2) / offset;
break;
case 1: //Right Up
case 3: //Right Down
this.targetNormalizedPos = 1 - (this.targetScrollData.originPosition.x - this.targetScrollData.width / 2) / offset;
break;
}
}
}
}
this.targetScrollData = null;
this.targetNormalizedPos = Mathf.Clamp01(this.targetNormalizedPos);
//根据state来判断如何跳转
switch (state)
{
case State.Directly:
this.setNormalizedPos(targetNormalizedPos);
state = State.None;
break;
case State.Animated:
float lerpNormalizedPos = Mathf.Lerp(this.getNormalizedPos(), targetNormalizedPos, Time.deltaTime * scrollSystem.jumpToSpeed);
var pixelDistance = Mathf.Abs(lerpNormalizedPos - targetNormalizedPos) * scrollSystem.contentSize;
if (pixelDistance < 1)
{
this.setNormalizedPos(this.targetNormalizedPos);
state = State.None;
}
else
{
this.setNormalizedPos(lerpNormalizedPos);
}
break;
}
return(true);
}
else
{
return(false);
}
}
