/// ------------------------------------------------------------------------------------
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (!Application.RenderWithVisualStyles)
{
ControlPaint.DrawBorder3D(e.Graphics, ClientRectangle, Border3DStyle.Sunken);
}
else
{
VisualStyleRenderer renderer = new VisualStyleRenderer(Enabled ?
VisualStyleElement.TextBox.TextEdit.Normal :
VisualStyleElement.TextBox.TextEdit.Disabled);
renderer.DrawBackground(e.Graphics, ClientRectangle, e.ClipRectangle);
// When the textbox background is drawn in normal mode (at least when the
// theme is one of the standard XP themes), it's drawn with a white background
// and not the System Window background color. Therefore, we need to create
// a rectangle that doesn't include the border. Then fill it with the text
// box's background color.
Rectangle rc = renderer.GetBackgroundExtent(e.Graphics, ClientRectangle);
int dx = (rc.Width - ClientRectangle.Width) / 2;
int dy = (rc.Height - ClientRectangle.Height) / 2;
rc = ClientRectangle;
rc.Inflate(-dx, -dy);
using (SolidBrush br = new SolidBrush(_textBox.BackColor))
e.Graphics.FillRectangle(br, rc);
}
}
/// <summary>
/// Calculates the rectangles for the tab area, the client area,
/// the display area, and the transformed display area.
/// </summary>
private void CalculateRectangles()
{
Rectangle olddisp = displayRectangle;
positions.Clear();
Graphics g = this.CreateGraphics();
if (Controls.Count > 0)
{
int width = Width;
width -= tabExpand.Horizontal;
tabHeight = 0;
rows = 0;
int used = 0;
int pos = 0;
foreach (BpTabPage page in Controls)
{
VisualStyleElement element;
VisualStyleRenderer renderer;
Size closebutton = new Size(0, 0);
if (IncludesCloseButton(page))
{
element = VisualStyleElement.ToolTip.Close.Normal;
if (Application.RenderWithVisualStyles && VisualStyleRenderer.IsElementDefined(element))
{
renderer = new VisualStyleRenderer(element);
closebutton = renderer.GetPartSize(g, ThemeSizeType.Draw);
}
else
{
Font closefont = new Font("Marlett", SystemFonts.MenuFont.Size);
closebutton = TextRenderer.MeasureText("r", closefont);
closebutton.Height += SystemInformation.Border3DSize.Height * 2;
closebutton.Width += SystemInformation.Border3DSize.Width * 2;
}
}
Size size = page.GetPreferredTabSize(g);
size.Height = Math.Max(size.Height, closebutton.Height);
size.Width += closebutton.Width;
element = GetGuessedElement(page);
if (Application.RenderWithVisualStyles && VisualStyleRenderer.IsElementDefined(element))
{
renderer = new VisualStyleRenderer(element);
Rectangle fake = new Rectangle(0, 0, size.Width, size.Height);
fake = renderer.GetBackgroundExtent(g, fake);
size = new Size(fake.Width, fake.Height);
}
size.Height += SystemInformation.Border3DSize.Height * 2;
size.Width += SystemInformation.Border3DSize.Width * 2;
if (size.Width > width)
{
size.Width = width;
}
if ((size.Width + used) > width)
{
rowCounts.Add(pos);
rows++;
used = 0;
pos = 0;
}
TabPosition position = new TabPosition(rows, used, size, pos);
positions[page] = position;
tabHeight = Math.Max(tabHeight, size.Height);
used += size.Width;
pos++;
if (page == selectedTab)
{
selectedRow = rows;
}
}
rowCounts.Add(pos);
rows++;
tabsRectangle = new Rectangle(0, 0, Width, (rows * tabHeight) + tabExpand.Top);
paneRectangle = new Rectangle(0, tabsRectangle.Bottom, Width, Height - tabsRectangle.Bottom);
}
else
{
paneRectangle = ClientRectangle;
tabsRectangle = Rectangle.Empty;
}
if (Application.RenderWithVisualStyles && VisualStyleRenderer.IsElementDefined(VisualStyleElement.Tab.Pane.Normal))
{
VisualStyleRenderer renderer = new VisualStyleRenderer(VisualStyleElement.Tab.Pane.Normal);
displayRectangle = renderer.GetBackgroundContentRectangle(g, paneRectangle);
}
else
{
Padding paneMargin = new Padding(SystemInformation.Border3DSize.Width, SystemInformation.Border3DSize.Height, SystemInformation.Border3DSize.Width, SystemInformation.Border3DSize.Height);
displayRectangle = Rectangle.Empty;
displayRectangle.Y = paneRectangle.Y + paneMargin.Top;
displayRectangle.Height = paneRectangle.Height - paneMargin.Vertical;
displayRectangle.X = paneRectangle.X + paneMargin.Left;
displayRectangle.Width = paneRectangle.Width - paneMargin.Horizontal;
}
if (olddisp != displayRectangle)
{
Invalidate();
PerformLayout();
Update();
}
else
{
Rectangle badrect = tabsRectangle;
badrect.Height += tabExpand.Bottom;
Invalidate(badrect);
Update();
}
}
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
if (treeView1.SelectedNode != null)
{
Graphics g = Graphics.FromHwnd(this.Handle);
g.Clear(this.BackColor);
TextY = 0;
if (VisualStyleInformation.IsSupportedByOS)
{
DrawText(g, "VisualStyles supported by OS");
}
else
{
DrawText(g, "VisualStyles not supported by OS.");
return;
}
if (VisualStyleInformation.IsEnabledByUser)
{
DrawText(g, "VisualStyles enabled by user.");
}
else
{
DrawText(g, "VisualStyles not enabled by user.");
return;
}
// Create the VisualStyleElement
MethodInfo m = (MethodInfo)treeView1.SelectedNode.Tag;
VisualStyleElement vse = (VisualStyleElement)m.Invoke(null, null);
if (!VisualStyleRenderer.IsElementDefined(vse))
{
DrawText(g, treeView1.SelectedNode.Text + " is not defined by the current style.");
return;
}
try {
// Create the VisualStyleRenderer
if (vsr == null)
{
vsr = new VisualStyleRenderer(vse);
}
else
{
vsr.SetParameters(vse);
}
// Draw some pretty graphics
TextY += 25;
vsr.DrawBackground(g, new Rectangle(250, TextY, 25, 25));
vsr.DrawBackground(g, new Rectangle(350, TextY, 50, 50));
vsr.DrawBackground(g, new Rectangle(450, TextY, 50, 50), new Rectangle(450, TextY, 25, 25));
TextY += 75;
// Test some other methods
DrawText(g, "GetBackgroundContentRectangle: " + vsr.GetBackgroundContentRectangle(g, new Rectangle(300, 0, 300, 50)).ToString());
DrawText(g, "GetBackgroundExtent: " + vsr.GetBackgroundExtent(g, new Rectangle(300, 0, 300, 50)).ToString());
DrawText(g, "GetBoolean: " + vsr.GetBoolean(BooleanProperty.MirrorImage).ToString());
DrawText(g, "GetEnumValue: " + vsr.GetEnumValue(EnumProperty.VerticalAlignment).ToString());
DrawText(g, "GetFilename: " + vsr.GetFilename(FilenameProperty.ImageFile).ToString());
DrawText(g, "GetInteger: " + vsr.GetInteger(IntegerProperty.BorderSize).ToString());
DrawText(g, "GetMargins: " + vsr.GetMargins(g, MarginProperty.CaptionMargins).ToString());
DrawText(g, "GetPartSize: " + vsr.GetPartSize(g, ThemeSizeType.Draw).ToString());
DrawText(g, "GetPoint: " + vsr.GetPoint(PointProperty.MinSize).ToString());
DrawText(g, "GetString: " + vsr.GetString(StringProperty.Text).ToString());
DrawText(g, "GetTextExtent: " + vsr.GetTextExtent(g, "HeyThere!", TextFormatFlags.Default).ToString());
DrawText(g, "GetTextMetrics: " + vsr.GetTextMetrics(g).Ascent.ToString());
DrawText(g, "GetBackgroundRegion: " + vsr.GetBackgroundRegion(g, this.ClientRectangle).GetBounds(g).ToString());
DrawText(g, "HitTestBackground: " + vsr.HitTestBackground(g, this.ClientRectangle, new Point(300, 300), HitTestOptions.Caption).ToString());
DrawText(g, "Author: " + VisualStyleInformation.Author);
DrawText(g, "ColorScheme: " + VisualStyleInformation.ColorScheme);
DrawText(g, "Company: " + VisualStyleInformation.Company);
DrawText(g, "ControlHighlightHot: " + VisualStyleInformation.ControlHighlightHot.ToString());
DrawText(g, "Copyright: " + VisualStyleInformation.Copyright);
DrawText(g, "Description: " + VisualStyleInformation.Description);
DrawText(g, "DisplayName: " + VisualStyleInformation.DisplayName);
DrawText(g, "MinimumColorDepth: " + VisualStyleInformation.MinimumColorDepth.ToString());
DrawText(g, "Size: " + VisualStyleInformation.Size.ToString());
DrawText(g, "SupportsFlatMenus: " + VisualStyleInformation.SupportsFlatMenus.ToString());
DrawText(g, "TextControlBorder: " + VisualStyleInformation.TextControlBorder.ToString());
DrawText(g, "Url: " + VisualStyleInformation.Url);
DrawText(g, "Version: " + VisualStyleInformation.Version.ToString());
}
catch (Exception ex) {
System.Console.WriteLine(ex.ToString());
}
}
}