mirror of
https://github.com/xcp-ng/xenadmin.git
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202 lines
11 KiB
C#
202 lines
11 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Drawing;
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using System.Windows.Forms;
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using System.Windows.Forms.VisualStyles;
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namespace XenAdmin.Controls
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{
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public partial class TransparentTrackBar : UserControl
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{
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public TransparentTrackBar()
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{
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InitializeComponent();
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SetStyle(ControlStyles.AllPaintingInWmPaint, true);
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SetStyle(ControlStyles.UserPaint, true);
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}
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public int Max = 8;
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public int Min = 0;
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public int Value = 0;
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public readonly int ThumbWidth = 11;
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public bool Hot = false;
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public bool Pressed = false;
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public new EventHandler Scroll;
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protected override void OnPaint(PaintEventArgs e)
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{
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if (Application.RenderWithVisualStyles)
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{
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ButtonRenderer.DrawParentBackground(e.Graphics, e.ClipRectangle, this);
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}
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else
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{
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base.OnPaintBackground(e);
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}
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if (Application.RenderWithVisualStyles)
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{
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TrackBarRenderer.DrawHorizontalTrack(e.Graphics, new Rectangle(e.ClipRectangle.Left + 5, 5 + (e.ClipRectangle.Height - 10 - 4) / 2, e.ClipRectangle.Width - 12, 4));
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TrackBarRenderer.DrawHorizontalTicks(e.Graphics, new Rectangle(e.ClipRectangle.Left + 5, (e.ClipRectangle.Height - 5), e.ClipRectangle.Width - 12, 4), (Max + 1 - Min), EdgeStyle.Bump);
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TrackBarRenderer.DrawBottomPointingThumb(e.Graphics, GetThumbRectangle(), !Enabled ? TrackBarThumbState.Disabled : Pressed ? TrackBarThumbState.Pressed : Hot ? TrackBarThumbState.Hot : TrackBarThumbState.Normal);
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}
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else
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{
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e.Graphics.DrawRectangle(SystemPens.ControlDark, new Rectangle(e.ClipRectangle.Left + 5, 5 + (e.ClipRectangle.Height - 10 - 4) / 2, e.ClipRectangle.Width - 12, 3));
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e.Graphics.DrawLine(SystemPens.ButtonHighlight, e.ClipRectangle.Left + 5, 5 + (e.ClipRectangle.Height - 8) / 2, e.ClipRectangle.Left + 5 + e.ClipRectangle.Width - 12, 5 + (e.ClipRectangle.Height - 8) / 2);
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e.Graphics.DrawLine(SystemPens.ControlDarkDark, e.ClipRectangle.Left + 6, 5 + (e.ClipRectangle.Height - 12) / 2, e.ClipRectangle.Left + 5 + e.ClipRectangle.Width - 13, 5 + (e.ClipRectangle.Height - 12) / 2);
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e.Graphics.DrawLine(SystemPens.ButtonFace, e.ClipRectangle.Left + 6, 5 + (e.ClipRectangle.Height - 14) / 2, e.ClipRectangle.Left + 5 + e.ClipRectangle.Width - 13, 5 + (e.ClipRectangle.Height - 14) / 2);
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Rectangle tickRect = new Rectangle(e.ClipRectangle.Left + 5, (e.ClipRectangle.Height - 5), e.ClipRectangle.Width - 10, 4);
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int tickLeft = tickRect.Left;
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int add = tickRect.Width / (Max - Min);
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using (Pen tickPen = new Pen(SystemColors.ControlText,2.0f))
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{
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for (int i = 0; i < (Max - Min) + 1; i++)
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{
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if(i < (Max - Min))
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add = (tickRect.Right - tickLeft) / (Max - (Min + i));
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e.Graphics.DrawLine(tickPen,tickLeft,tickRect.Bottom - 4,tickLeft,tickRect.Bottom);
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tickLeft += add;
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}
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}
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Rectangle thumbRect = GetThumbRectangle();
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if (Pressed)
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{
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e.Graphics.FillPolygon(SystemBrushes.ControlDarkDark, new Point[] { new Point(thumbRect.Left, thumbRect.Top), new Point(thumbRect.Right, thumbRect.Top), new Point(thumbRect.Right, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom), new Point(thumbRect.Left, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ButtonHighlight, new Point[] { new Point(thumbRect.Left, thumbRect.Top), new Point(thumbRect.Right - 1, thumbRect.Top), new Point(thumbRect.Right - 1, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left - 1 + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ButtonShadow, new Point[] { new Point(thumbRect.Left + 1, thumbRect.Top + 1), new Point(thumbRect.Right - 1, thumbRect.Top + 1), new Point(thumbRect.Right - 1, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left + 1, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ControlLightLight, new Point[] { new Point(thumbRect.Left + 1, thumbRect.Top + 1), new Point(thumbRect.Right - 2, thumbRect.Top + 1), new Point(thumbRect.Right - 2, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 2), new Point(thumbRect.Left - 1 + thumbRect.Width / 2, thumbRect.Bottom - 2), new Point(thumbRect.Left + 1, thumbRect.Bottom - 5) });
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}
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else
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{
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e.Graphics.FillPolygon(SystemBrushes.ControlDarkDark, new Point[] { new Point(thumbRect.Left, thumbRect.Top), new Point(thumbRect.Right, thumbRect.Top), new Point(thumbRect.Right, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom), new Point(thumbRect.Left, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ButtonHighlight, new Point[] { new Point(thumbRect.Left, thumbRect.Top), new Point(thumbRect.Right - 1, thumbRect.Top), new Point(thumbRect.Right - 1, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left - 1 + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ButtonShadow, new Point[] { new Point(thumbRect.Left + 1, thumbRect.Top + 1), new Point(thumbRect.Right - 1, thumbRect.Top + 1), new Point(thumbRect.Right - 1, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 1), new Point(thumbRect.Left + 1, thumbRect.Bottom - 5) });
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e.Graphics.FillPolygon(SystemBrushes.ButtonFace, new Point[] { new Point(thumbRect.Left + 1, thumbRect.Top + 1), new Point(thumbRect.Right - 2, thumbRect.Top + 1), new Point(thumbRect.Right - 2, thumbRect.Bottom - 5), new Point(thumbRect.Left + thumbRect.Width / 2, thumbRect.Bottom - 2), new Point(thumbRect.Left - 1 + thumbRect.Width / 2, thumbRect.Bottom - 2), new Point(thumbRect.Left + 1, thumbRect.Bottom - 5) });
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}
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}
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}
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private Rectangle GetThumbRectangle()
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{
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float tickWidth = Convert.ToSingle(ClientSize.Width - 12) / Convert.ToSingle(Max - Min);
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return new Rectangle(Convert.ToInt32(Convert.ToSingle(Value) * tickWidth), 8, ThumbWidth, Height - 22);
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}
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protected override void OnMouseMove(MouseEventArgs e)
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{
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if (e.Button == MouseButtons.None && GetThumbRectangle().Contains(PointToClient(MousePosition)))
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{
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if (!Hot)
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{
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Hot = true;
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Invalidate();
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}
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}
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else if (e.Button == MouseButtons.None && Hot)
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{
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Hot = false;
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Invalidate();
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}
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if (e.Button == MouseButtons.Left)
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{
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Pressed = true;
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if (SetNewValue(PointToClient(MousePosition)))
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{
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Invalidate();
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if (Scroll != null)
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Scroll(null, null);
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}
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}
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else
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{
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if (Pressed)
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{
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Pressed = false;
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Invalidate();
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}
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}
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base.OnMouseMove(e);
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}
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protected override void OnMouseDown(MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left)
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{
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if (SetNewValue(PointToClient(MousePosition)))
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{
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Pressed = true;
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Invalidate();
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if (Scroll != null)
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Scroll(null, null);
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}
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else if (!Pressed)
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{
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Pressed = true;
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Invalidate();
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}
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}
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else
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{
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if (Pressed)
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{
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Pressed = false;
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Invalidate();
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}
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}
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}
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private bool SetNewValue(Point point)
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{
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float tickWidth = Convert.ToSingle(ClientSize.Width - 10) / Convert.ToSingle(Max - Min);
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int newVal = Convert.ToInt32(Convert.ToSingle(point.X - 5) / tickWidth);
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if (newVal > Max)
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newVal = Max;
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else if (newVal < Min)
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newVal = Min;
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if(newVal == Value)
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return false;
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Value = newVal;
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Refresh();
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return true;
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}
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}
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}
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