private Rectangle GetTabRectangle(TabNG tab, bool transformed)
{
var dockState = tab.Content.DockHandler.DockState;
var rectTabStrip = GetLogicalTabStripRectangle(dockState);
if (rectTabStrip.IsEmpty)
{
return(Rectangle.Empty);
}
var x = tab.TabX;
var y = rectTabStrip.Y +
(dockState == DockState.DockTopAutoHide || dockState == DockState.DockRightAutoHide
? 0
: TabGapTop);
var width = tab.TabWidth;
var height = rectTabStrip.Height - TabGapTop;
if (!transformed)
{
return(new Rectangle(x, y, width, height));
}
else
{
return(GetTransformedRectangle(dockState, new Rectangle(x, y, width, height)));
}
}
private GraphicsPath GetTabOutline(TabNG tab, bool transformed, bool rtlTransform)
{
var dockState = tab.Content.DockHandler.DockState;
var rectTab = GetTabRectangle(tab, transformed);
if (rtlTransform)
{
rectTab = RtlTransform(rectTab, dockState);
}
var upTab = (dockState == DockState.DockLeftAutoHide || dockState == DockState.DockBottomAutoHide);
DrawHelper.GetRoundedCornerTab(GraphicsPath, rectTab, upTab);
return(GraphicsPath);
}
private Rectangle GetTabRectangle(TabNG tab)
{
return(GetTabRectangle(tab, false));
}
private void DrawTab(Graphics g, TabNG tab)
{
var rectTabOrigin = GetTabRectangle(tab);
if (rectTabOrigin.IsEmpty)
{
return;
}
var dockState = tab.Content.DockHandler.DockState;
var content = tab.Content;
var path = GetTabOutline(tab, false, true);
var startColor = DockPanel.Theme.Skin.AutoHideStripSkin.TabGradient.StartColor;
var endColor = DockPanel.Theme.Skin.AutoHideStripSkin.TabGradient.EndColor;
var gradientMode = DockPanel.Theme.Skin.AutoHideStripSkin.TabGradient.LinearGradientMode;
g.FillPath(new LinearGradientBrush(rectTabOrigin, startColor, endColor, gradientMode), path);
g.DrawPath(PenTabBorder, path);
// Set no rotate for drawing icon and text
using (var matrixRotate = g.Transform)
{
g.Transform = MatrixIdentity;
// Draw the icon
var rectImage = rectTabOrigin;
rectImage.X += ImageGapLeft;
rectImage.Y += ImageGapTop;
var imageHeight = rectTabOrigin.Height - ImageGapTop - ImageGapBottom;
var imageWidth = ImageWidth;
if (imageHeight > ImageHeight)
{
imageWidth = ImageWidth * (imageHeight / ImageHeight);
}
rectImage.Height = imageHeight;
rectImage.Width = imageWidth;
rectImage = GetTransformedRectangle(dockState, rectImage);
if (dockState == DockState.DockLeftAutoHide || dockState == DockState.DockRightAutoHide)
{
// The DockState is DockLeftAutoHide or DockRightAutoHide, so rotate the image 90 degrees to the right.
var rectTransform = RtlTransform(rectImage, dockState);
Point[] rotationPoints =
{
new Point(rectTransform.X + rectTransform.Width, rectTransform.Y),
new Point(rectTransform.X + rectTransform.Width, rectTransform.Y + rectTransform.Height),
new Point(rectTransform.X, rectTransform.Y)
};
using (var rotatedIcon = new Icon(((Form)content).Icon, 16, 16))
{
g.DrawImage(rotatedIcon.ToBitmap(), rotationPoints);
}
}
else
{
// Draw the icon normally without any rotation.
g.DrawIcon(((Form)content).Icon, RtlTransform(rectImage, dockState));
}
// Draw the text
var rectText = rectTabOrigin;
rectText.X += ImageGapLeft + imageWidth + ImageGapRight + TextGapLeft;
rectText.Width -= ImageGapLeft + imageWidth + ImageGapRight + TextGapLeft;
rectText = RtlTransform(GetTransformedRectangle(dockState, rectText), dockState);
var textColor = DockPanel.Theme.Skin.AutoHideStripSkin.TabGradient.TextColor;
if (dockState == DockState.DockLeftAutoHide || dockState == DockState.DockRightAutoHide)
{
g.DrawString(content.DockHandler.TabText, TextFont, new SolidBrush(textColor), rectText,
StringFormatTabVertical);
}
else
{
g.DrawString(content.DockHandler.TabText, TextFont, new SolidBrush(textColor), rectText,
StringFormatTabHorizontal);
}
// Set rotate back
g.Transform = matrixRotate;
}
}