/// <summary>
/// 绘制列表子项
/// </summary>
/// <param name="g">绘图表面</param>
/// <param name="subItem">要绘制的子项</param>
/// <param name="rectSubItem">该子项的区域</param>
/// <param name="sb">画刷</param>
protected virtual void DrawSubItem(Graphics g, ChatListSubItem subItem, ref Rectangle rectSubItem, SolidBrush sb)
{
if (subItem.Equals(selectSubItem))
{ //判断改子项是否被选中
rectSubItem.Height = (int)ChatListItemIcon.Large; //如果选中则绘制成大图标
sb.Color = this.subItemSelectColor;
g.FillRectangle(sb, rectSubItem);
DrawHeadImage(g, subItem, rectSubItem); //绘制头像
DrawLargeSubItem(g, subItem, rectSubItem); //绘制大图标 显示的个人信息
subItem.Bounds = new Rectangle(rectSubItem.Location, rectSubItem.Size);
return;
}
else if (subItem.Equals(m_mouseOnSubItem))
{
sb.Color = this.subItemMouseOnColor;
}
else
{
sb.Color = this.subItemColor;
}
g.FillRectangle(sb, rectSubItem);
DrawHeadImage(g, subItem, rectSubItem);
if (iconSizeMode == ChatListItemIcon.Large) //没有选中则根据 图标模式绘制
{
DrawLargeSubItem(g, subItem, rectSubItem);
}
else
{
DrawSmallSubItem(g, subItem, rectSubItem);
}
subItem.Bounds = new Rectangle(rectSubItem.Location, rectSubItem.Size);
}
/// <summary>
/// 移除一个子项
/// </summary>
/// <param name="subItem">要移除的子项</param>
public void Remove(ChatListSubItem subItem)
{
int index = this.IndexOf(subItem);
if (-1 != index)
{
this.RemoveAt(index);
}
}
//实现排序接口
int IComparable.CompareTo(object obj)
{
if (!(obj is ChatListSubItem))
{
throw new NotImplementedException("obj is not ChatListSubItem");
}
ChatListSubItem subItem = obj as ChatListSubItem;
return((this.status).CompareTo(subItem.status));
}
private void ClearSubItemMouseOn()
{
if (m_mouseOnSubItem != null)
{
this.Invalidate(new Rectangle(
m_mouseOnSubItem.Bounds.X, m_mouseOnSubItem.Bounds.Y - chatVScroll.Value,
m_mouseOnSubItem.Bounds.Width, m_mouseOnSubItem.Bounds.Height));
m_mouseOnSubItem = null;
}
}
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture,
object value, Type destinationType)
{
if (destinationType == null)
{
throw new ArgumentNullException("DestinationType cannot be null");
}
//MessageBox.Show("Convertto OK");
if (destinationType == typeof(InstanceDescriptor) && (value is ChatListItem))
{
ConstructorInfo constructor = null;
ChatListItem item = (ChatListItem)value;
ChatListSubItem[] subItems = null;
//MessageBox.Show("Convertto Start Item:" + item.Text);
//MessageBox.Show("Item.SubItems.Count:" + item.SubItems.Count);
if (item.SubItems.Count > 0)
{
subItems = new ChatListSubItem[item.SubItems.Count];
item.SubItems.CopyTo(subItems, 0);
}
//MessageBox.Show("Item.SubItems.Count:" + item.SubItems.Count);
if (item.Text != null && subItems != null)
{
constructor = typeof(ChatListItem).GetConstructor(new Type[] { typeof(string), typeof(ChatListSubItem[]) });
}
//MessageBox.Show("Constructor(Text,item[]):" + (constructor != null));
if (constructor != null)
{
return(new InstanceDescriptor(constructor, new object[] { item.Text, subItems }, false));
}
if (subItems != null)
{
constructor = typeof(ChatListItem).GetConstructor(new Type[] { typeof(ChatListSubItem[]) });
}
if (constructor != null)
{
return(new InstanceDescriptor(constructor, new object[] { subItems }, false));
}
if (item.Text != null)
{
//MessageBox.Show("StartGetConstructor(text)");
constructor = typeof(ChatListItem).GetConstructor(new Type[] { typeof(string), typeof(bool) });
}
//MessageBox.Show("Constructor(Text):" + (constructor != null));
if (constructor != null)
{
//System.Windows.Forms.MessageBox.Show("text OK");
return(new InstanceDescriptor(constructor, new object[] { item.Text, item.IsOpen }));
}
}
return(base.ConvertTo(context, culture, value, destinationType));
}
/// <summary>
/// 绘制列表子项的头像
/// </summary>
/// <param name="g">绘图表面</param>
/// <param name="subItem">要绘制头像的子项</param>
/// <param name="rectSubItem">该子项的区域</param>
protected virtual void DrawHeadImage(Graphics g, ChatListSubItem subItem, Rectangle rectSubItem)
{
if (subItem.IsTwinkle)
{ //判断改头像是否闪动
if (subItem.IsTwinkleHide) //同理该值 在线程中 取反赋值
{
return;
}
}
int imageHeight = rectSubItem.Height - 10; //根据子项的大小计算头像的区域
subItem.HeadRect = new Rectangle(5, rectSubItem.Top + 5, imageHeight, imageHeight);
if (subItem.HeadImage == null) //如果头像位空 用默认资源给定的头像
{
subItem.HeadImage = global::CWebQQ.Properties.Resources._null;
}
if (subItem.Status == ChatListSubItem.UserStatus.OffLine)
{
g.DrawImage(subItem.GetDarkImage(), subItem.HeadRect);
}
else
{
g.DrawImage(subItem.HeadImage, subItem.HeadRect); //如果在线根据在想状态绘制小图标
if (subItem.Status == ChatListSubItem.UserStatus.QMe)
{
g.DrawImage(global::CWebQQ.Properties.Resources.QMe, new Rectangle(subItem.HeadRect.Right - 10, subItem.HeadRect.Bottom - 10, 11, 11));
}
if (subItem.Status == ChatListSubItem.UserStatus.Away)
{
g.DrawImage(global::CWebQQ.Properties.Resources.Away, new Rectangle(subItem.HeadRect.Right - 10, subItem.HeadRect.Bottom - 10, 11, 11));
}
if (subItem.Status == ChatListSubItem.UserStatus.Busy)
{
g.DrawImage(global::CWebQQ.Properties.Resources.Busy, new Rectangle(subItem.HeadRect.Right - 10, subItem.HeadRect.Bottom - 10, 11, 11));
}
if (subItem.Status == ChatListSubItem.UserStatus.DontDisturb)
{
g.DrawImage(global::CWebQQ.Properties.Resources.Dont_Disturb, new Rectangle(subItem.HeadRect.Right - 10, subItem.HeadRect.Bottom - 10, 11, 11));
}
}
if (subItem.Equals(selectSubItem)) //根据是否选中头像绘制头像的外边框
{
g.DrawRectangle(Pens.Cyan, subItem.HeadRect);
}
else
{
g.DrawRectangle(Pens.Gray, subItem.HeadRect);
}
}
//确认存储空间
private void EnsureSpace(int elements)
{
if (m_arrSubItems == null)
{
m_arrSubItems = new ChatListSubItem[Math.Max(elements, 4)];
}
else if (elements + this.count > m_arrSubItems.Length)
{
ChatListSubItem[] arrTemp = new ChatListSubItem[Math.Max(m_arrSubItems.Length * 2, elements + this.count)];
m_arrSubItems.CopyTo(arrTemp, 0);
m_arrSubItems = arrTemp;
}
}
/// <summary>
/// 根据在线状态添加一个子项
/// </summary>
/// <param name="subItem">要添加的子项</param>
public void AddAccordingToStatus(ChatListSubItem subItem)
{
if (subItem.Status == ChatListSubItem.UserStatus.OffLine)
{
this.Add(subItem);
return;
}
for (int i = 0, len = this.count; i < len; i++)
{
if (subItem.Status <= m_arrSubItems[i].Status)
{
this.Insert(i, subItem);
return;
}
}
this.Add(subItem);
}
/// <summary>
/// 添加一个子项
/// </summary>
/// <param name="subItem">要添加的子项</param>
public void Add(ChatListSubItem subItem)
{
if (subItem == null)
{
throw new ArgumentNullException("SubItem cannot be null");
}
this.EnsureSpace(1);
if (-1 == IndexOf(subItem))
{
subItem.OwnerListItem = owner;
m_arrSubItems[this.count++] = subItem;
if (this.owner.OwnerChatListBox != null)
{
this.owner.OwnerChatListBox.Invalidate();
}
}
}
/// <summary>
/// 绘制大图标模式的个人信息
/// </summary>
/// <param name="g">绘图表面</param>
/// <param name="subItem">要绘制信息的子项</param>
/// <param name="rectSubItem">该子项的区域</param>
protected virtual void DrawLargeSubItem(Graphics g, ChatListSubItem subItem, Rectangle rectSubItem)
{
rectSubItem.Height = (int)ChatListItemIcon.Large; //重新赋值一个高度
string strDraw = subItem.DisplayName;
Size szFont = TextRenderer.MeasureText(strDraw, this.Font);
if (szFont.Width > 0)
{ //判断是否有备注名称
g.DrawString(strDraw, this.Font, Brushes.Black, rectSubItem.Height, rectSubItem.Top + 5);
g.DrawString("(" + subItem.NicName + ")",
this.Font, Brushes.Gray, rectSubItem.Height + szFont.Width, rectSubItem.Top + 5);
}
else
{ //如果没有备注名称 这直接绘制昵称
g.DrawString(subItem.NicName, this.Font, Brushes.Black, rectSubItem.Height, rectSubItem.Top + 5);
} //绘制个人签名
g.DrawString(subItem.PersonalMsg, this.Font, Brushes.Gray, rectSubItem.Height, rectSubItem.Top + 5 + this.Font.Height);
}
/// <summary>
/// 绘制小图标模式的个人信息
/// </summary>
/// <param name="g">绘图表面</param>
/// <param name="subItem">要绘制信息的子项</param>
/// <param name="rectSubItem">该子项的区域</param>
protected virtual void DrawSmallSubItem(Graphics g, ChatListSubItem subItem, Rectangle rectSubItem)
{
rectSubItem.Height = (int)ChatListItemIcon.Small; //重新赋值一个高度
StringFormat sf = new StringFormat();
sf.LineAlignment = StringAlignment.Center;
sf.FormatFlags = StringFormatFlags.NoWrap;
string strDraw = subItem.DisplayName;
if (string.IsNullOrEmpty(strDraw))
{
strDraw = subItem.NicName; //如果没有备注绘制昵称
}
Size szFont = TextRenderer.MeasureText(strDraw, this.Font);
sf.SetTabStops(0.0F, new float[] { rectSubItem.Height });
g.DrawString("\t" + strDraw, this.Font, Brushes.Black, rectSubItem, sf);
sf.SetTabStops(0.0F, new float[] { rectSubItem.Height + 5 + szFont.Width });
g.DrawString("\t" + subItem.PersonalMsg, this.Font, Brushes.Gray, rectSubItem, sf);
}
/// <summary>
/// 根据索引插入一个子项
/// </summary>
/// <param name="index">索引位置</param>
/// <param name="subItem">要插入的子项</param>
public void Insert(int index, ChatListSubItem subItem)
{
if (index < 0 || index >= this.count)
{
throw new IndexOutOfRangeException("Index was outside the bounds of the array");
}
if (subItem == null)
{
throw new ArgumentNullException("SubItem cannot be null");
}
this.EnsureSpace(1);
for (int i = this.count; i > index; i--)
{
m_arrSubItems[i] = m_arrSubItems[i - 1];
}
subItem.OwnerListItem = this.owner;
m_arrSubItems[index] = subItem;
this.count++;
if (this.owner.OwnerChatListBox != null)
{
this.owner.OwnerChatListBox.Invalidate();
}
}
public ChatListEventArgs(ChatListSubItem mouseonsubitem, ChatListSubItem selectsubitem)
{
this.mouseOnSubItem = mouseonsubitem;
this.selectSubItem = selectsubitem;
}
/// <summary>
/// 判断子项是否在集合内
/// </summary>
/// <param name="subItem">要判断的子项</param>
/// <returns>是否在集合内</returns>
public bool Contains(ChatListSubItem subItem)
{
return(this.IndexOf(subItem) != -1);
}
protected override void OnMouseMove(MouseEventArgs e)
{
m_ptMousePos = e.Location;
if (chatVScroll.IsMouseDown)
{ //如果滚动条的滑块处于被点击 那么移动
chatVScroll.MoveSliderFromLocation(e.Y);
return;
}
if (chatVScroll.ShouldBeDraw)
{ //如果控件上有滚动条 判断鼠标是否在滚动条区域移动
if (chatVScroll.Bounds.Contains(m_ptMousePos))
{
ClearItemMouseOn();
ClearSubItemMouseOn();
if (chatVScroll.SliderBounds.Contains(m_ptMousePos))
{
chatVScroll.IsMouseOnSlider = true;
}
else
{
chatVScroll.IsMouseOnSlider = false;
}
if (chatVScroll.UpBounds.Contains(m_ptMousePos))
{
chatVScroll.IsMouseOnUp = true;
}
else
{
chatVScroll.IsMouseOnUp = false;
}
if (chatVScroll.DownBounds.Contains(m_ptMousePos))
{
chatVScroll.IsMouseOnDown = true;
}
else
{
chatVScroll.IsMouseOnDown = false;
}
return;
}
else
{
chatVScroll.ClearAllMouseOn();
}
}
m_ptMousePos.Y += chatVScroll.Value; //如果不在滚动条范围类 那么根据滚动条当前值计算虚拟的一个坐标
for (int i = 0, Len = items.Count; i < Len; i++)
{ //然后判断鼠标是否移动到某一列表项或者子项
if (items[i].Bounds.Contains(m_ptMousePos))
{
if (items[i].IsOpen)
{ //如果展开 判断鼠标是否在某一子项上面
for (int j = 0, lenSubItem = items[i].SubItems.Count; j < lenSubItem; j++)
{
if (items[i].SubItems[j].Bounds.Contains(m_ptMousePos))
{
if (m_mouseOnSubItem != null)
{ //如果当前鼠标下子项不为空
if (items[i].SubItems[j].HeadRect.Contains(m_ptMousePos))
{ //判断鼠标是否在头像内
if (!m_bOnMouseEnterHeaded)
{ //如果没有触发进入事件 那么触发用户绑定的事件
OnMouseEnterHead(new ChatListEventArgs(this.m_mouseOnSubItem, this.selectSubItem));
m_bOnMouseEnterHeaded = true;
}
}
else
{
if (m_bOnMouseEnterHeaded)
{ //如果已经执行过进入事件 那触发用户绑定的离开事件
OnMouseLeaveHead(new ChatListEventArgs(this.m_mouseOnSubItem, this.selectSubItem));
m_bOnMouseEnterHeaded = false;
}
}
}
if (items[i].SubItems[j].Equals(m_mouseOnSubItem))
{
return;
}
ClearSubItemMouseOn();
ClearItemMouseOn();
m_mouseOnSubItem = items[i].SubItems[j];
this.Invalidate(new Rectangle(
m_mouseOnSubItem.Bounds.X, m_mouseOnSubItem.Bounds.Y - chatVScroll.Value,
m_mouseOnSubItem.Bounds.Width, m_mouseOnSubItem.Bounds.Height));
//this.Invalidate();
return;
}
}
ClearSubItemMouseOn(); //循环做完没发现子项 那么判断是否在列表上面
if (new Rectangle(0, items[i].Bounds.Top - chatVScroll.Value, this.Width, 20).Contains(e.Location))
{
if (items[i].Equals(m_mouseOnItem))
{
return;
}
ClearItemMouseOn();
m_mouseOnItem = items[i];
this.Invalidate(new Rectangle(
m_mouseOnItem.Bounds.X, m_mouseOnItem.Bounds.Y - chatVScroll.Value,
m_mouseOnItem.Bounds.Width, m_mouseOnItem.Bounds.Height));
//this.Invalidate();
return;
}
}
else
{ //如果列表项没有展开 重绘列表项
if (items[i].Equals(m_mouseOnItem))
{
return;
}
ClearItemMouseOn();
ClearSubItemMouseOn();
m_mouseOnItem = items[i];
this.Invalidate(new Rectangle(
m_mouseOnItem.Bounds.X, m_mouseOnItem.Bounds.Y - chatVScroll.Value,
m_mouseOnItem.Bounds.Width, m_mouseOnItem.Bounds.Height));
//this.Invalidate();
return;
}
}
}//若循环结束 既不在列表上也不再子项上 清空上面的颜色
ClearItemMouseOn();
ClearSubItemMouseOn();
base.OnMouseMove(e);
}
/// <summary>
/// 获取索引位置
/// </summary>
/// <param name="subItem">要获取索引的子项</param>
/// <returns>索引</returns>
public int IndexOf(ChatListSubItem subItem)
{
return(Array.IndexOf <ChatListSubItem>(m_arrSubItems, subItem));
}
protected override void OnClick(EventArgs e)
{
if (chatVScroll.IsMouseDown)
{
return; //MouseUp事件触发在Click后 滚动条滑块为点下状态 单击无效
}
if (chatVScroll.ShouldBeDraw)
{ //如果有滚动条 判断是否在滚动条类点击
if (chatVScroll.Bounds.Contains(m_ptMousePos))
{ //判断在滚动条那个位置点击
if (chatVScroll.UpBounds.Contains(m_ptMousePos))
{
chatVScroll.Value -= 50;
}
else if (chatVScroll.DownBounds.Contains(m_ptMousePos))
{
chatVScroll.Value += 50;
}
else if (!chatVScroll.SliderBounds.Contains(m_ptMousePos))
{
chatVScroll.MoveSliderToLocation(m_ptMousePos.Y);
}
return;
}
}//否则 如果在列表上点击 展开或者关闭 在子项上面点击则选中
foreach (ChatListItem item in items)
{
if (item.Bounds.Contains(m_ptMousePos))
{
if (item.IsOpen)
{
foreach (ChatListSubItem subItem in item.SubItems)
{
if (subItem.Bounds.Contains(m_ptMousePos))
{
if (!subItem.Equals(selectSubItem))
{
selectSubItem = subItem;
this.Invalidate();
}
if (_MouseClickButton == System.Windows.Forms.MouseButtons.Right)
{
OnContextSubItem(new ChatListEventArgs(m_mouseOnSubItem, subItem));
//Debug.WriteLine("子项被选中");
}
return;
}
}
if (new Rectangle(0, item.Bounds.Top, this.Width, 20).Contains(m_ptMousePos))
{
selectSubItem = null;
item.IsOpen = !item.IsOpen;
this.Invalidate();
return;
}
}
else
{
selectSubItem = null;
item.IsOpen = !item.IsOpen;
this.Invalidate();
return;
}
}
}
base.OnClick(e);
}
