/// <summary>
/// Draws a top-level menu item.
/// </summary>
/// <param name="drawItemState">A DrawItemEventArgs that contains the event data.</param>
private void DrawMainMenuItem(DrawItemEventArgs ea)
{
// record state
DrawItemState drawItemState = ea.State;
// Create graphics context on the offscreen bitmap and set the bounds for painting.
//Graphics graphics = Graphics.FromImage(offscreenBitmap);
Graphics graphics = ea.Graphics;
BidiGraphics g = new BidiGraphics(graphics, new Size(GetMainMenu().GetForm().Width, 0));
//Rectangle bounds = new Rectangle(0, 0, offscreenBitmap.Width, offscreenBitmap.Height);
Rectangle bounds = ea.Bounds;
// get reference to colorized resources
ColorizedResources cres = ColorizedResources.Instance;
// Fill the menu item with the correct color
Form containingForm = GetMainMenu().GetForm();
if ((containingForm is IMainMenuBackgroundPainter))
{
(containingForm as IMainMenuBackgroundPainter).PaintBackground(g.Graphics, g.TranslateRectangle(ea.Bounds));
}
else
{
g.FillRectangle(SystemBrushes.Control, bounds);
}
// Draw the hotlight or selection rectangle.
if ((drawItemState & DrawItemState.HotLight) != 0 || (drawItemState & DrawItemState.Selected) != 0)
{
// Cheat some for the first top-level menu item. Provide a bit of "air" at the
// left of the "HotLight" rectangle so it doesn't run into the frame.
int xOffset = (Index == 0) ? 1 : 0;
// Calculate the hotlight rectangle.
Rectangle hotlightRectangle = new Rectangle(bounds.X + xOffset,
bounds.Y + 1,
bounds.Width - xOffset - 1,
bounds.Height - 1);
DrawHotlight(g, cres.MainMenuHighlightColor, hotlightRectangle, !cres.CustomMainMenuPainting);
}
// Calculate the text area rectangle. This area excludes an area at the right
// edge of the menu item where the system draws the cascade indicator. It would
// have been better if MenuItem let us draw the indicator (we did say "OwnerDraw"
// after all), but this is just how it works.
Rectangle textAreaRectangle = new Rectangle(bounds.X,
bounds.Y + 1,
bounds.Width,
bounds.Height);
// Determine which StringFormat to use when drawing the menu item text.
TextFormatFlags textFormat;
if ((drawItemState & DrawItemState.NoAccelerator) != 0)
textFormat = mainMenuItemTextNoHotKeyStringFormat;
else
textFormat = mainMenuItemTextHotKeyStringFormat;
//DisplayHelper.FixupGdiPlusLineCentering(graphics, menuFont, MenuText(), ref stringFormat, ref textAreaRectangle);
// Draw the shortcut and the menu text.
TextRenderer.DrawText(g.Graphics, MenuText(), menuFont, textAreaRectangle, cres.MainMenuTextColor, textFormat);
// We're finished with the double buffered painting. Dispose of the graphics context
// and draw the offscreen image. Cache the offscreen bitmap, though.
graphics.Dispose();
}
private void DrawTabFace(BidiGraphics g, Color bgColor, Color borderColor, Color lineColor)
{
Rectangle borderRect = ClientRectangle;
if (!Selected)
borderRect.Height -= 2;
// Remove one pixel for the bottom edge of the tab.
// We don't want it filled in by the face color as
// that would cause the corner pixels of the tab
// to be filled in.
borderRect.Height -= 1;
using (Brush b = new SolidBrush(bgColor))
g.Graphics.FillRectangle(b, borderRect);
borderRect.Width -= 1;
if (Selected)
borderRect.Y -= 1;
else
{
borderRect.Height -= 1;
}
if (clipLeftBorder)
{
borderRect.X -= 1;
borderRect.Width += 1;
}
if (clipRightBorder)
borderRect.Width += 1;
Region clip = g.Graphics.Clip;
clip.Exclude(g.TranslateRectangle(new Rectangle(borderRect.X, borderRect.Bottom, 1, 1)));
clip.Exclude(g.TranslateRectangle(new Rectangle(borderRect.Right, borderRect.Bottom, 1, 1)));
g.Graphics.Clip = clip;
using (Pen p = new Pen(borderColor))
g.DrawRectangle(p, borderRect);
if (!Selected)
using (Pen p = new Pen(lineColor))
g.DrawLine(p, 0, 0, ClientSize.Width, 0);
}
