/// <summary>
/// 拖动滚动中
/// </summary>
public virtual void onDragScrolling()
{
int width = Width, height = Height;
if (m_allowDragScroll && m_readyToDragScroll)
{
if (!onDragScrollPermit())
{
m_readyToDragScroll = false;
return;
}
bool paint = false;
FCPoint newPoint = Native.TouchPoint;
if (m_hScrollBar != null && m_hScrollBar.Visible)
{
if (Math.Abs(newPoint.x - m_startMovePoint.x) > width / 10)
{
m_isDragScrolling2 = true;
}
int newPos = m_startMovePosX + m_startMovePoint.x - newPoint.x;
if (newPos != m_hScrollBar.Pos)
{
m_hScrollBar.Pos = newPos;
m_hScrollBar.update();
paint = true;
}
}
if (m_vScrollBar != null && m_vScrollBar.Visible)
{
if (Math.Abs(newPoint.y - m_startMovePoint.y) > height / 10)
{
m_isDragScrolling2 = true;
}
int newPos = m_startMovePosY + m_startMovePoint.y - newPoint.y;
if (newPos != m_vScrollBar.Pos)
{
m_vScrollBar.Pos = newPos;
m_vScrollBar.update();
paint = true;
}
}
if (paint)
{
m_isDragScrolling = true;
invalidate();
}
}
}
/// <summary>
/// 更新滚动条的布局
/// </summary>
public virtual void updateScrollBar()
{
if (Native != null)
{
FCHScrollBar hScrollBar = HScrollBar;
FCVScrollBar vScrollBar = VScrollBar;
if (Visible)
{
int width = Width, height = Height;
//滚动条尺寸
int hBarHeight = (hScrollBar != null) ? hScrollBar.Height : 0;
int vBarWidth = (vScrollBar != null) ? vScrollBar.Width : 0;
int wmax = getContentWidth(), hmax = getContentHeight();
if (hScrollBar != null)
{
hScrollBar.ContentSize = wmax;
hScrollBar.Size = new FCSize(width - vBarWidth, hBarHeight);
hScrollBar.PageSize = width - vBarWidth;
hScrollBar.Location = new FCPoint(0, height - hBarHeight);
if (wmax <= width)
{
hScrollBar.Visible = false;
}
else
{
hScrollBar.Visible = true;
}
}
if (vScrollBar != null)
{
vScrollBar.ContentSize = hmax;
vScrollBar.Size = new FCSize(vBarWidth, height - hBarHeight);
vScrollBar.PageSize = height - hBarHeight;
vScrollBar.Location = new FCPoint(width - vBarWidth, 0);
int vh = (hScrollBar != null && hScrollBar.Visible) ? height - hBarHeight : height;
if (hmax <= vh)
{
vScrollBar.Visible = false;
}
else
{
vScrollBar.Visible = true;
}
}
//修改尺寸
if (hScrollBar != null && vScrollBar != null)
{
if (hScrollBar.Visible && !vScrollBar.Visible)
{
hScrollBar.Width = width;
hScrollBar.PageSize = width;
}
else if (!hScrollBar.Visible && vScrollBar.Visible)
{
vScrollBar.Height = height;
vScrollBar.PageSize = height;
}
}
if (hScrollBar != null && hScrollBar.Visible)
{
hScrollBar.update();
}
if (vScrollBar != null && vScrollBar.Visible)
{
vScrollBar.update();
}
}
}
}
