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Diffstat (limited to 'source/ShiftUI/Internal/GroupBoxRenderer.cs')
| -rw-r--r-- | source/ShiftUI/Internal/GroupBoxRenderer.cs | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/source/ShiftUI/Internal/GroupBoxRenderer.cs b/source/ShiftUI/Internal/GroupBoxRenderer.cs new file mode 100644 index 0000000..c0c9699 --- /dev/null +++ b/source/ShiftUI/Internal/GroupBoxRenderer.cs @@ -0,0 +1,157 @@ +// +// GroupBoxRenderer.cs +// +// 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) 2006 Novell, Inc. +// +// Authors: +// Jonathan Pobst ([email protected]) +// + +using System.Drawing; +using ShiftUI.VisualStyles; +using System; + +namespace ShiftUI +{ + public sealed class GroupBoxRenderer + { + private static bool always_use_visual_styles = false; + + #region Private Constructor + private GroupBoxRenderer () { } + #endregion + + #region Public Static Methods + public static void DrawGroupBox (Graphics g, Rectangle bounds, GroupBoxState state) + { + DrawGroupBox (g, bounds, String.Empty, null, Color.Empty, TextFormatFlags.Default, state); + } + + public static void DrawGroupBox (Graphics g, Rectangle bounds, string groupBoxText, Font font, GroupBoxState state) + { + DrawGroupBox (g, bounds, groupBoxText, font, Color.Empty, TextFormatFlags.Default, state); + } + + public static void DrawGroupBox (Graphics g, Rectangle bounds, string groupBoxText, Font font, Color textColor, GroupBoxState state) + { + DrawGroupBox (g, bounds, groupBoxText, font, textColor, TextFormatFlags.Default, state); + } + + public static void DrawGroupBox (Graphics g, Rectangle bounds, string groupBoxText, Font font, TextFormatFlags flags, GroupBoxState state) + { + DrawGroupBox (g, bounds, groupBoxText, font, Color.Empty, flags, state); + } + + public static void DrawGroupBox (Graphics g, Rectangle bounds, string groupBoxText, Font font, Color textColor, TextFormatFlags flags, GroupBoxState state) + { + Size font_size = TextRenderer.MeasureText (groupBoxText, font); + + if (Application.RenderWithVisualStyles || always_use_visual_styles == true) { + VisualStyleRenderer vsr; + Rectangle new_bounds; + + switch (state) { + case GroupBoxState.Normal: + default: + vsr = new VisualStyleRenderer (VisualStyleElement.Button.GroupBox.Normal); + new_bounds = new Rectangle (bounds.Left, bounds.Top + (int)(font_size.Height / 2) - 1, bounds.Width, bounds.Height - (int)(font_size.Height / 2) + 1); + break; + case GroupBoxState.Disabled: + vsr = new VisualStyleRenderer (VisualStyleElement.Button.GroupBox.Disabled); + new_bounds = new Rectangle (bounds.Left, bounds.Top + (int)(font_size.Height / 2) - 2, bounds.Width, bounds.Height - (int)(font_size.Height / 2) + 2); + break; + } + + if (groupBoxText == String.Empty) + vsr.DrawBackground (g, bounds); + else + vsr.DrawBackgroundExcludingArea (g, new_bounds, new Rectangle (bounds.Left + 9, bounds.Top, font_size.Width - 3, font_size.Height)); + + if (textColor == Color.Empty) + textColor = vsr.GetColor (ColorProperty.TextColor); + + if (groupBoxText != String.Empty) + TextRenderer.DrawText (g, groupBoxText, font, new Point (bounds.Left + 8, bounds.Top), textColor, flags); + } + else { + // MS has a pretty big bug when rendering the non-visual styles group box. Instead of using the height + // part of the bounds as height, they use it as the bottom, so the boxes are drawn in completely different + // places. Rather than emulate this bug, we do it correctly. After googling for a while, I don't think + // anyone has ever actually used this class for anything, so it should be fine. :) + Rectangle new_bounds = new Rectangle (bounds.Left, bounds.Top + (int)(font_size.Height / 2), bounds.Width, bounds.Height - (int)(font_size.Height / 2)); + + // Don't paint over the background where we are going to put the text + Region old_clip = g.Clip; + g.SetClip (new Rectangle (bounds.Left + 9, bounds.Top, font_size.Width - 3, font_size.Height), System.Drawing.Drawing2D.CombineMode.Exclude); + + WidgetPaint.DrawBorder3D (g, new_bounds, Border3DStyle.Etched); + + g.Clip = old_clip; + + if (groupBoxText != String.Empty) { + if (textColor == Color.Empty) + textColor = state == GroupBoxState.Normal ? SystemColors.ControlText : + SystemColors.GrayText; + TextRenderer.DrawText (g, groupBoxText, font, new Point (bounds.Left + 8, bounds.Top), textColor, flags); + } + } + } + + public static bool IsBackgroundPartiallyTransparent (GroupBoxState state) + { + if (!VisualStyleRenderer.IsSupported) + return false; + + VisualStyleRenderer vsr; + + switch (state) { + case GroupBoxState.Normal: + default: + vsr = new VisualStyleRenderer (VisualStyleElement.Button.GroupBox.Normal); + break; + case GroupBoxState.Disabled: + vsr = new VisualStyleRenderer (VisualStyleElement.Button.GroupBox.Disabled); + break; + } + + return vsr.IsBackgroundPartiallyTransparent (); + } + + public static void DrawParentBackground (Graphics g, Rectangle bounds, Widget childControl) + { + if (!VisualStyleRenderer.IsSupported) + return; + + VisualStyleRenderer vsr = new VisualStyleRenderer (VisualStyleElement.Button.GroupBox.Normal); + + vsr.DrawParentBackground (g, bounds, childControl); + } + #endregion + + #region Public Static Properties + public static bool RenderMatchingApplicationState { + get { return !always_use_visual_styles; } + set { always_use_visual_styles = !value; } + } + #endregion + } +} |
