我们主要采用TabControl和WebBrowser来实现多选项卡浏览器控件开发。
现介绍主要控件实现代码。
u 新建选项卡页面代码实现如下：
public void CreateNewTabPage(string url)
{
ExtendedWebBrowser web = new ExtendedWebBrowser();
web.Name = "WebBroswer" + _webBrowserLists.Count.ToString();
web.Dock = DockStyle.Fill;
web.Margin = new Padding(0, 0, 0, 0);
web.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
web.BeforeNewWindow += new EventHandler(webBrowser1_BeforeNewWindow);
web.Navigate(url);
_webBrowserLists.Add(web);
TabPage tbp = new TabPage();
tbp.Name = "TabPage" + tabControl1.TabCount.ToString();
tbp.Text = "空白页";
tbp.Padding = new Padding(0, 3, 0, 0);
tbp.Margin = new Padding(0, 3, 0, 0);
tbp.ImageIndex = 0;
tbp.Controls.Add(web);
this.tabControl1.Controls.Add(tbp);
this.tabControl1.SelectedTab = tbp;
}
u 把网页标题及图片关闭按钮的绘制选项卡中代码实现如下：
private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
try
{
Graphics g = e.Graphics;
Rectangle tabRectangle = this.tabControl1.GetTabRect(e.Index);
//先添加TabPage属性
g.DrawString(this.tabControl1.TabPages[e.Index].Text
, this.Font, SystemBrushes.ControlText, tabRectangle.X + 3, tabRectangle.Y + 3);
if (tabControl1.TabCount > 1)
{
//再画一个矩形框
using (Pen p = new Pen(SystemColors.Control))
{
tabRectangle.Offset(tabRectangle.Width - (CLOSE_SIZE + 3), 2);
tabRectangle.Width = CLOSE_SIZE;
tabRectangle.Height = CLOSE_SIZE;
g.DrawRectangle(p, tabRectangle);
}
g.DrawImage(e.State == DrawItemState.Selected ? imageList1.Images["closeSelected"] : imageList1.Images["close"], new Point(tabRectangle.X, tabRectangle.Y));
}
g.Dispose();
}
catch (Exception ex)
{
throw (ex);
}
}
u Webbrowser控件完成时及Webbrowser控件新建窗口时代码实现如下：
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
ExtendedWebBrowser web = (ExtendedWebBrowser)(sender);
string TabPage tb = (TabPage)web.Parent;
tb.Text = title.Length > 6 ? title.Substring(0, 6) + "..." : title;
if (tabControl1.SelectedTab == tb)
{
this.Text = title;
}
}
private void webBrowser1_BeforeNewWindow(object sender, System.EventArgs e)
{
WebBrowserExtendedNavigatingEventArgs eventArgs = e as WebBrowserExtendedNavigatingEventArgs;
CreateNewTabPage(eventArgs.Url);
eventArgs.Cancel = true;
}
