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// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2007 Novell, Inc.
//
// Authors:
// Everaldo Canuto (ecanuto@novell.com)
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
namespace System.Windows.Forms.Theming.Default
{
internal class LinkLabelPainter
{
public LinkLabelPainter ()
{
}
private Color GetPieceColor (LinkLabel label, LinkLabel.Piece piece, int i)
{
if (!label.Enabled)
return label.DisabledLinkColor;
if (piece.link == null)
return label.ForeColor;
if (!piece.link.Enabled)
return label.DisabledLinkColor;
if (piece.link.Active)
return label.ActiveLinkColor;
if ((label.LinkVisited && i == 0) || piece.link.Visited)
return label.VisitedLinkColor;
return label.LinkColor;
}
public virtual void Draw (Graphics dc, Rectangle clip_rectangle, LinkLabel label)
{
Rectangle client_rect = label.PaddingClientRectangle;
label.DrawImage (dc, label.Image, client_rect, label.ImageAlign);
if (label.pieces == null)
return;
// Paint all text as disabled.
if (!label.Enabled) {
dc.SetClip (clip_rectangle);
ThemeEngine.Current.CPDrawStringDisabled (
dc, label.Text, label.Font, label.BackColor, client_rect, label.string_format);
return;
}
Font font, link_font = ThemeEngine.Current.GetLinkFont (label);
Region text_region = new Region (new Rectangle());
// Draw links.
for (int i = 0; i < label.pieces.Length; i ++) {
LinkLabel.Piece piece = label.pieces[i];
if (piece.link == null) {
text_region.Union (piece.region);
continue;
}
Color color = GetPieceColor (label, piece, i);
if ( (label.LinkBehavior == LinkBehavior.AlwaysUnderline) ||
(label.LinkBehavior == LinkBehavior.SystemDefault) ||
((label.LinkBehavior == LinkBehavior.HoverUnderline) && piece.link.Hovered) )
font = link_font;
else
font = label.Font;
dc.Clip = piece.region;
dc.Clip.Intersect (clip_rectangle);
dc.DrawString (label.Text, font,
ThemeEngine.Current.ResPool.GetSolidBrush (color),
client_rect, label.string_format);
// Draw focus rectangle
if ((piece.link != null) && piece.link.Focused) {
foreach (RectangleF rect in piece.region.GetRegionScans (dc.Transform))
ControlPaint.DrawFocusRectangle (dc, Rectangle.Round (rect), label.ForeColor, label.BackColor);
}
}
// Draw normal text (without links).
if (!text_region.IsEmpty (dc)) {
dc.Clip = text_region;
dc.Clip.Intersect (clip_rectangle);
if (!dc.Clip.IsEmpty (dc))
dc.DrawString(label.Text, label.Font,
ThemeEngine.Current.ResPool.GetSolidBrush(label.ForeColor),
client_rect, label.string_format);
}
}
}
}
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