Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / WinForms / Managed / System / WinForms / ToolStripHighContrastRenderer.cs / 1 / ToolStripHighContrastRenderer.cs
#region Using directives using System; using System.Collections.Generic; using System.Text; using System.Windows.Forms; using System.Drawing; using System.Drawing.Imaging; using System.Drawing.Drawing2D; using System.Collections.Specialized; #endregion namespace System.Windows.Forms { // this renderer supports high contrast for ToolStripProfessional and ToolStripSystemRenderer. internal class ToolStripHighContrastRenderer : ToolStripSystemRenderer { private const int GRIP_PADDING = 4; BitVector32 options = new BitVector32(); private static readonly int optionsDottedBorder = BitVector32.CreateMask(); private static readonly int optionsDottedGrip = BitVector32.CreateMask(optionsDottedBorder); private static readonly int optionsFillWhenSelected = BitVector32.CreateMask(optionsDottedGrip); public ToolStripHighContrastRenderer(bool systemRenderMode) { options[optionsDottedBorder | optionsDottedGrip | optionsFillWhenSelected] = !systemRenderMode; } public bool DottedBorder { get { return options[optionsDottedBorder]; } } public bool DottedGrip { get { return options[optionsDottedGrip]; } } public bool FillWhenSelected{ get { return options[optionsFillWhenSelected]; } } // this is a renderer override, so return null so we dont get into an infinite loop. internal override ToolStripRenderer RendererOverride { get { return null; } } protected override void OnRenderArrow(ToolStripArrowRenderEventArgs e) { base.OnRenderArrow(e); } protected override void OnRenderGrip(ToolStripGripRenderEventArgs e) { if (DottedGrip) { Graphics g = e.Graphics; Rectangle bounds = e.GripBounds; ToolStrip toolStrip = e.ToolStrip; int height = (toolStrip.Orientation == Orientation.Horizontal) ? bounds.Height : bounds.Width; int width = (toolStrip.Orientation == Orientation.Horizontal) ? bounds.Width : bounds.Height; int numRectangles = (height - (GRIP_PADDING * 2)) / 4; if (numRectangles > 0) { Rectangle[] shadowRects = new Rectangle[numRectangles]; int startY = GRIP_PADDING; int startX = (width / 2); for (int i = 0; i < numRectangles; i++) { shadowRects[i] = (toolStrip.Orientation == Orientation.Horizontal) ? new Rectangle(startX, startY, 2, 2) : new Rectangle(startY, startX, 2, 2); startY += 4; } g.FillRectangles(SystemBrushes.ControlLight, shadowRects); } } else { base.OnRenderGrip(e); } } protected override void OnRenderDropDownButtonBackground(ToolStripItemRenderEventArgs e) { if (FillWhenSelected) { RenderItemInternalFilled(e, false); } else { base.OnRenderDropDownButtonBackground(e); if (e.Item.Pressed) { e.Graphics.DrawRectangle(SystemPens.ButtonHighlight, new Rectangle(0, 0, e.Item.Width - 1, e.Item.Height - 1)); } } } protected override void OnRenderItemCheck(ToolStripItemImageRenderEventArgs e) { base.OnRenderItemCheck(e); } protected override void OnRenderImageMargin(ToolStripRenderEventArgs e) { // do nothing } protected override void OnRenderItemBackground(ToolStripItemRenderEventArgs e) { base.OnRenderItemBackground(e); } protected override void OnRenderSplitButtonBackground(ToolStripItemRenderEventArgs e) { ToolStripSplitButton item = e.Item as ToolStripSplitButton; Rectangle bounds = new Rectangle(Point.Empty, e.Item.Size); Graphics g = e.Graphics; if (item != null) { Rectangle dropDownRect = item.DropDownButtonBounds; if (item.Pressed) { g.DrawRectangle(SystemPens.ButtonHighlight, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); } else if (item.Selected) { g.FillRectangle(SystemBrushes.Highlight, bounds); g.DrawRectangle(SystemPens.ButtonHighlight, bounds.X, bounds.Y, bounds.Width-1, bounds.Height -1); g.DrawRectangle(SystemPens.ButtonHighlight, dropDownRect); } DrawArrow(new ToolStripArrowRenderEventArgs(g, item, dropDownRect, SystemColors.ControlText, ArrowDirection.Down)); } } protected override void OnRenderStatusStripSizingGrip(ToolStripRenderEventArgs e) { base.OnRenderStatusStripSizingGrip(e); } protected override void OnRenderLabelBackground(ToolStripItemRenderEventArgs e) { if (FillWhenSelected) { RenderItemInternalFilled(e); } else { base.OnRenderLabelBackground(e); } } protected override void OnRenderMenuItemBackground(ToolStripItemRenderEventArgs e) { base.OnRenderMenuItemBackground(e); if (!e.Item.IsOnDropDown && e.Item.Pressed) { e.Graphics.DrawRectangle(SystemPens.ButtonHighlight, 0, 0, e.Item.Width - 1, e.Item.Height - 1); } } protected override void OnRenderOverflowButtonBackground(ToolStripItemRenderEventArgs e) { if (FillWhenSelected) { RenderItemInternalFilled(e, /*pressFill = */false); ToolStripItem item = e.Item; Graphics g = e.Graphics; Color arrowColor = item.Enabled ? SystemColors.ControlText : SystemColors.ControlDark; DrawArrow(new ToolStripArrowRenderEventArgs(g, item, new Rectangle(Point.Empty, item.Size), arrowColor, ArrowDirection.Down)); } else { base.OnRenderOverflowButtonBackground(e); } } protected override void OnRenderItemText(ToolStripItemTextRenderEventArgs e) { if (e.TextColor != SystemColors.HighlightText || e.TextColor != SystemColors.ControlText) { // we'll change the DefaultTextColor, if someone wants to change this,manually set the TextColor property. e.DefaultTextColor = SystemColors.ControlText; } base.OnRenderItemText(e); } protected override void OnRenderToolStripBackground(ToolStripRenderEventArgs e) { // do nothing. LOGO requirements ask us not to paint background effects behind } protected override void OnRenderToolStripBorder(ToolStripRenderEventArgs e) { Rectangle bounds = new Rectangle(Point.Empty, e.ToolStrip.Size); Graphics g = e.Graphics; if (e.ToolStrip is ToolStripDropDown) { g.DrawRectangle(SystemPens.ButtonHighlight, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); if (!(e.ToolStrip is ToolStripOverflow)) { // make the neck connected. g.FillRectangle(SystemBrushes.Control, e.ConnectedArea); } } else if (e.ToolStrip is MenuStrip) { // do nothing } else if (e.ToolStrip is StatusStrip) { g.DrawRectangle(SystemPens.ButtonShadow, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); } else { RenderToolStripBackgroundInternal(e); } } private void RenderToolStripBackgroundInternal(ToolStripRenderEventArgs e) { Rectangle bounds = new Rectangle(Point.Empty, e.ToolStrip.Size); Graphics g = e.Graphics; if (DottedBorder) { using (Pen p = new Pen(SystemColors.ButtonShadow)) { p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot; bool oddWidth = ((bounds.Width & 0x1) == 0x1); bool oddHeight = ((bounds.Height & 0x1) == 0x1); int indent = 2; // top g.DrawLine(p, bounds.X + indent, bounds.Y, bounds.Width - 1, bounds.Y); // bottom g.DrawLine(p, bounds.X + indent, bounds.Height - 1, bounds.Width - 1, bounds.Height - 1); // left g.DrawLine(p, bounds.X, bounds.Y + indent, bounds.X, bounds.Height - 1); // right g.DrawLine(p, bounds.Width - 1, bounds.Y + indent, bounds.Width - 1, bounds.Height - 1); // connecting pixels // top left conntecting pixel - always drawn g.FillRectangle(SystemBrushes.ButtonShadow, new Rectangle(1, 1, 1, 1)); if (oddWidth) { // top right pixel g.FillRectangle(SystemBrushes.ButtonShadow, new Rectangle(bounds.Width - 2, 1, 1, 1)); } // bottom conntecting pixels - drawn only if height is odd if (oddHeight) { // bottom left g.FillRectangle(SystemBrushes.ButtonShadow, new Rectangle(1, bounds.Height - 2, 1, 1)); } // top and bottom right conntecting pixel - drawn only if height and width are odd if (oddHeight && oddWidth) { // bottom right g.FillRectangle(SystemBrushes.ButtonShadow, new Rectangle(bounds.Width - 2, bounds.Height - 2, 1, 1)); } } } else { // draw solid border bounds.Width -= 1; bounds.Height -= 1; g.DrawRectangle(SystemPens.ButtonShadow, bounds); } } protected override void OnRenderSeparator(ToolStripSeparatorRenderEventArgs e) { Pen foreColorPen = SystemPens.ButtonShadow; Graphics g = e.Graphics; Rectangle bounds = new Rectangle(Point.Empty, e.Item.Size); if (e.Vertical) { if (bounds.Height >= 8) { bounds.Inflate(0, -4); // scoot down 4PX and start drawing } // Draw dark line int startX = bounds.Width / 2; g.DrawLine(foreColorPen, startX, bounds.Top, startX, bounds.Bottom - 1); } else { // // horizontal separator if (bounds.Width >= 4) { bounds.Inflate(-2, 0); // scoot over 2PX and start drawing } // Draw dark line int startY = bounds.Height / 2; g.DrawLine(foreColorPen, bounds.Left, startY, bounds.Right - 1, startY); } } // Indicates whether system is currently set to high contrast 'white on black' mode internal static bool IsHighContrastWhiteOnBlack() { return SystemColors.Control.ToArgb() == Color.Black.ToArgb(); } protected override void OnRenderItemImage(ToolStripItemImageRenderEventArgs e) { Image image = e.Image; if (image != null) { if (Image.GetPixelFormatSize(image.PixelFormat) > 16) { // for 24, 32 bit images, just paint normally - mapping the color table is not // going to work when you can have full color. base.OnRenderItemImage(e); return; } Graphics g = e.Graphics; ToolStripItem item = e.Item; Rectangle imageRect = e.ImageRectangle; using (ImageAttributes attrs = new ImageAttributes()) { if (IsHighContrastWhiteOnBlack() && !(FillWhenSelected && (e.Item.Pressed || e.Item.Selected))) { // translate white, black and blue to colors visible in high contrast mode. ColorMap cm1 = new ColorMap(); ColorMap cm2 = new ColorMap(); ColorMap cm3 = new ColorMap(); cm1.OldColor = Color.Black; cm1.NewColor = Color.White; cm2.OldColor = Color.White; cm2.NewColor = Color.Black; cm3.OldColor = Color.FromArgb(0, 0, 128); cm3.NewColor = Color.White; attrs.SetRemapTable(new ColorMap[] { cm1, cm2, cm3 }, ColorAdjustType.Bitmap); } if (item.ImageScaling == ToolStripItemImageScaling.None) { g.DrawImage(image, imageRect, 0, 0, imageRect.Width, imageRect.Height, GraphicsUnit.Pixel, attrs); } else { g.DrawImage(image, imageRect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attrs); } } } } protected override void OnRenderButtonBackground(ToolStripItemRenderEventArgs e) { if (FillWhenSelected) { ToolStripButton button = e.Item as ToolStripButton; if (button != null && button.Checked) { Graphics g = e.Graphics; Rectangle bounds = new Rectangle(Point.Empty, e.Item.Size); if (button.CheckState == CheckState.Checked) { g.FillRectangle(SystemBrushes.Highlight, bounds); } g.DrawRectangle(SystemPens.ControlLight, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); } else { RenderItemInternalFilled(e); } } else { base.OnRenderButtonBackground(e); } } private void RenderItemInternalFilled(ToolStripItemRenderEventArgs e) { RenderItemInternalFilled(e, /*pressFill=*/true); } private void RenderItemInternalFilled(ToolStripItemRenderEventArgs e, bool pressFill) { Graphics g = e.Graphics; Rectangle bounds = new Rectangle(Point.Empty, e.Item.Size); if (e.Item.Pressed) { if (pressFill) { g.FillRectangle(SystemBrushes.Highlight, bounds); } else { g.DrawRectangle(SystemPens.ControlLight, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); } } else if (e.Item.Selected) { g.FillRectangle(SystemBrushes.Highlight, bounds); g.DrawRectangle(SystemPens.ControlLight, bounds.X, bounds.Y, bounds.Width - 1, bounds.Height - 1); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. 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