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Diffstat (limited to 'source/ShiftUI/Theming/Default/LinkLabelPainter.cs')
| -rw-r--r-- | source/ShiftUI/Theming/Default/LinkLabelPainter.cs | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/source/ShiftUI/Theming/Default/LinkLabelPainter.cs b/source/ShiftUI/Theming/Default/LinkLabelPainter.cs new file mode 100644 index 0000000..6ac39a0 --- /dev/null +++ b/source/ShiftUI/Theming/Default/LinkLabelPainter.cs @@ -0,0 +1,120 @@ +// 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 ([email protected]) + +using System; +using System.Drawing; +using System.Drawing.Drawing2D; + +namespace ShiftUI.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)) + WidgetPaint.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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