/// <summary>
/// 引发 Paint 事件
/// </summary>
/// <param name="e">包含事件数据的 PaintEventArgs</param>
protected override void OnPaint(PaintEventArgs e)
{
// 获取绘制对象
Graphics g = e.Graphics;
// 过程中需要用到的变量
MenuItem menuItem;
int formHeight = 0;
// 轮询每个菜单项，确定窗体需要的长度和宽度
for (int i = 0; i < mItems.Count; i++)
{
menuItem = mItems[i];
// 判断菜单项类型
if (menuItem.MenuItemType == MenuItemType.Spliter)
{
// 分割线
// 判断当前菜单类型是否支持分割线
if (mMenuType != MenuType.QQ)
{
throw new ArgumentException(
"CharmControlLibrary.CharmMenu：当前菜单类型不支持分割线.\n" +
"Name: " + Name);
}
// 绘制分割线
g.DrawImage(Resources.menu_spliter,
new Rectangle(new Point(32, formHeight + 1), new Size(Width - 39, 2)));
formHeight += 3;
}
else
{
// 文本项
// 判断是否为选择项，是则需要绘制背景
if (mSelectedIndex == i)
{
Bitmap imgTemp = Resources.mun_select_bkg;
imgTemp = ImageOperation.ResizeImageWithoutBorder(
imgTemp, 3, 1, 3, 1, new Size(Width - 2, 21));
g.DrawImage(imgTemp, new Rectangle(3, formHeight + 2, Width - 5, 21));
// 绘制菜单项文本
g.DrawString(menuItem.Text, Font, Brushes.White, new Point(32, formHeight + 3));
}
else
{
g.DrawString(menuItem.Text, Font, Brushes.Black, new Point(32, formHeight + 3));
}
// 判断是否需要绘制图标
if (menuItem.Icon != null)
{
g.DrawImage(menuItem.Icon,
new Rectangle(new Point(14 - menuItem.Icon.Width / 2, formHeight + 12 - menuItem.Icon.Height / 2),
menuItem.Icon.Size));
}
formHeight += 22;
}
}
}
/// <summary>
/// 初始化 CharmTextBox 类的新实例
/// </summary>
public CharmTextBox()
: base()
{
// * 初始化属性 *
Size = new Size(160, 26);
BackColor = Color.White;
mStatusImages = new Image[2];
mStatusImages[0] = Resources.textbox_bkg_normal;
// 去除常态背景空白部分
mStatusImages[0] =
ImageOperation.GetPartOfImage(mStatusImages[0], mStatusImages[0].Width, mStatusImages[0].Height - 2, 0, 1);
mStatusImages[1] = Resources.textbox_bkg_hover;
// 重新设置文本框大小
mStatusImages[0] = ImageOperation.ResizeImageWithoutBorder(mStatusImages[0], 2, 1, 2, 1, base.Size);
mStatusImages[1] = ImageOperation.ResizeImageWithoutBorder(mStatusImages[1], 2, 2, 2, 2, base.Size);
// * 文本框外观样式设置 *
mTextbox = new TextBox();
mTextbox.BorderStyle = BorderStyle.None; // 无边框
mTextbox.Font = new Font("微软雅黑", 9.75F); // 字体
mTextbox.Size = new Size(156, 20); // 大小
mTextbox.Location = new Point(2, (Height - mTextbox.Height) / 2); // 位置
mTextbox.ImeMode = ImeMode.NoControl; // 输入法设置
// 设置水印
if (mWatermark != null)
{
mTextbox.ForeColor = Color.DarkGray;
mTextbox.Text = mWatermark;
}
// * 控件属性设置 *
mInputMode = InputMode.Normal; // 输入模式
// * 关联控件事件 *
mTextbox.MouseEnter += new EventHandler(TextBox_MouseEnter);
mTextbox.MouseLeave += new EventHandler(TextBox_MouseLeave);
mTextbox.KeyPress += new KeyPressEventHandler(TextBox_KeyPress);
mTextbox.LostFocus += new EventHandler(TextBox_LostFocus);
mTextbox.GotFocus += new EventHandler(TextBox_GotFocus);
mTextbox.DoubleClick += new EventHandler(mTextbox_DoubleClick);
mTextbox.TextChanged += new EventHandler(mTextbox_TextChanged);
// * 加载控件到控件集合中 *
Controls.Add(mTextbox);
}
/// <summary>
/// 显示一个消息框，该消息框包含消息、标题栏标题、按钮和图标，并接受默认消息框结果和返回结果
/// </summary>
/// <param name="messageBoxText">一个 String，用于指定要显示的文本</param>
/// <param name="caption">一个 String，用于指定要显示的标题栏标题</param>
/// <param name="button">一个 MessageBoxButton 值，用于指定要显示哪个按钮或哪些按钮</param>
/// <param name="icon">一个 CharmMessageBoxIcon 值，用于指定要显示的图标</param>
/// <param name="defaultResult">一个 DialogResult 值，用于指定消息框的默认结果</param>
/// <returns>一个 DialogResult 值，用于指定用户单击了哪个消息框按钮</returns>
public DialogResult Show(
string messageBoxText,
string caption,
MessageBoxButtons button,
CharmMessageBoxIcon icon,
DialogResult defaultResult)
{
#region 旧版的文本换行写法
//using (Graphics g = Graphics.FromImage(base.BackgroundImage))
//{
// byte[] data = Encoding.Default.GetBytes(text);
// int index = 0;
// byte[] cache;
// int minLength;
// while (data.Length >= (index + 1) * _textWidth)
// {
// cache = new byte[_textWidth];
// minLength = data.Length > (index + 1) * _textWidth ? (index + 1) * _textWidth : data.Length - 1;
// for (int i = index * _textWidth; i < minLength; i++)
// {
// cache[i - index * _textWidth] = data[i];
// }
// g.DrawString(Encoding.Default.GetString(cache), new Font("微软雅黑", 12), Brushes.Black,
// new Point(_textPoint.X, _textPoint.Y + index * 15));
// index++;
// }
// cache = new byte[_textWidth];
// minLength = data.Length > (index + 1) * _textWidth ? (index + 1) * _textWidth : data.Length - 1;
// for (int i = index * _textWidth; i <= minLength; i++)
// {
// cache[i - index * _textWidth] = data[i];
// }
// g.DrawString(Encoding.Default.GetString(cache), new Font("微软雅黑", 12), Brushes.Black,
// new Point(_textPoint.X, _textPoint.Y + index * 15));
//}
#endregion
// 计算需要绘制的文本高度
Graphics g = CreateGraphics();
SizeF sf = g.MeasureString(messageBoxText, new Font("微软雅黑", 9), Width - 90);
// 修改窗体高度
Height = (int)sf.Height + 120;
// 根据消息框类型设置背景图像资源并修改尺寸
switch (MessageBoxType)
{
case MessageBoxType.BlueSky:
BackgroundImage = Resources.messagebox_bluesky;
BackgroundImage =
ImageOperation.ResizeImageWithoutBorder(BackgroundImage, 2, 30, 2, 2, Size);
break;
case MessageBoxType.Customize:
if (mCustomizeBackgourndImage == null) // 检查用户是否完成对消息框的初始化
{
throw new ArgumentNullException(
"CharmControlLibrary.CharmMessageBox：未指定自定义消息框类型的背景图像资源.\n" +
"Name: " + Name);
}
BackgroundImage = new Bitmap(mCustomizeBackgourndImage, Size);
break;
}
using (g = Graphics.FromImage(BackgroundImage))
{
// 绘制标题栏文本
g.DrawString(caption, new Font("微软雅黑", 10, FontStyle.Bold), new SolidBrush(mTitleColor), new Point(8, 6));
// 绘制消息框图标
switch (icon)
{
case CharmMessageBoxIcon.None:
break;
case CharmMessageBoxIcon.Question:
g.DrawImage(Resources.messageboxicon_question,
new Rectangle(new Point(27, (int)sf.Height / 2 + 50), Resources.messageboxicon_question.Size));
break;
case CharmMessageBoxIcon.Error:
g.DrawImage(Resources.messageboxicon_error,
new Rectangle(new Point(27, (int)sf.Height / 2 + 50), Resources.messageboxicon_error.Size));
break;
case CharmMessageBoxIcon.Infomation:
g.DrawImage(Resources.messageboxicon_info,
new Rectangle(new Point(27, (int)sf.Height / 2 + 50), Resources.messageboxicon_info.Size));
break;
case CharmMessageBoxIcon.Ok:
g.DrawImage(Resources.messageboxicon_ok,
new Rectangle(new Point(27, (int)sf.Height / 2 + 50), Resources.messageboxicon_ok.Size));
break;
case CharmMessageBoxIcon.Warning:
g.DrawImage(Resources.messageboxicon_warning,
new Rectangle(new Point(27, (int)sf.Height / 2 + 50), Resources.messageboxicon_warning.Size));
break;
}
// 绘制消息文本
RectangleF rf = new RectangleF(75, 60, sf.Width, sf.Height);
g.DrawString(messageBoxText, new Font("微软雅黑", 9), new SolidBrush(mTextColor), rf);
}
// 设置按钮类型及坐标
mButtonType = button;
CharmControls[0].Location = new Point(89, (int)sf.Height + 85);
CharmControls[1].Location = new Point(178, (int)sf.Height + 85);
CharmControls[2].Location = new Point(265, (int)sf.Height + 85);
// 设置检查框坐标
CharmControls[3].Location = new Point(30, (int)sf.Height + 84);
// 显示消息框
ShowDialog();
return(mDialogResult);
}
// 窗体可见性改变事件，用于重新设置窗体属性
private void CharmMenu_VisibleChanged(object sender, EventArgs e)
{
// 判断窗体是否变为可见
if (Visible)
{
// 窗体长度及宽度
int formWidth = 0;
int formHeight = 0;
// 根据菜单项数组长度决定窗体属性
Graphics g = CreateGraphics();
SizeF sf;
MenuItem menuItem;
// 轮询每个菜单项，确定窗体需要的长度和宽度
for (int i = 0; i < mItems.Count; i++)
{
menuItem = mItems[i];
// 判断菜单项类型
if (menuItem.MenuItemType == MenuItemType.Spliter)
{
// 判断当前菜单类型是否支持分割线
if (mMenuType != MenuType.QQ)
{
throw new ArgumentException(
"CharmControlLibrary.CharmMenu：当前菜单类型不支持分割线.\n" +
"Name: " + Name);
}
formHeight += 3; // 分割线
}
else
{
// 文本项
formHeight += 22;
// 计算绘制文本所需的像素
sf = g.MeasureString(menuItem.Text, Font);
// 判断当前项文本所需像素是否大于之前项
if ((int)sf.Width > formWidth)
{
formWidth = (int)sf.Width;
}
}
}
Bitmap imgTemp = null;
// 设置窗体长度及宽度
Width = formWidth + 28 + 18;
Height = formHeight + 4;
// 根据菜单类型设置窗体背景
switch (mMenuType)
{
case MenuType.QQ:
imgTemp = new Bitmap(Resources.menu_bkg_qq);
imgTemp = ImageOperation.ResizeImageWithoutBorder(
imgTemp, 29, 2, 2, 2, new Size(Width, Height));
break;
case MenuType.QQSoftMgr:
imgTemp = new Bitmap(Resources.menu_bkg_qqsoftmgr);
imgTemp = ImageOperation.ResizeImageWithoutBorder(
imgTemp, 29, 2, 2, 2, new Size(Width, Height));
break;
}
BackgroundImage = new Bitmap(imgTemp);
// 释放系统资源
g.Dispose();
imgTemp.Dispose();
// 设置窗体显示的位置
Rectangle rect = Screen.GetWorkingArea(this);
// 判断是否有足够空间在光标右侧弹出菜单
if ((rect.Width - MousePosition.X) > Width)
{
Left = MousePosition.X; // 有足够空间
}
else
{
Left = MousePosition.X - Width; // 没有足够空间
}
// 判断是否有足够空间在光标下方弹出菜单
if ((rect.Height - MousePosition.Y) > Height)
{
Top = MousePosition.Y; // 有足够空间
}
else
{
Top = MousePosition.Y - Height; // 没有足够空间
}
}
}