using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace UsageControl
{
public partial class QueueUsageControl : UserControl
{
private List<QueueUsageEntry> _queuedItems;
private int _maxItemsVisible = 0;
private int _lastVisibleItemIndex = 0;
private int _itemHeight = 0;
private Dictionary<Color, Bitmap> _imagesCache = new Dictionary<Color, Bitmap>();
private GraphicsPath _pathBorder;
private RectangleF [] _slots;
private bool _invalidate = true;
public QueueUsageControl()
{
//Debug.WriteLine("QueueUsageControl");
EnableDoubleBuffering();
Reset();
InitializeComponent();
ControlRezised();
}
public static Bitmap GenerateItemImage(string text, Color color, int width, int height, Font font)
{
//Debug.WriteLine("GenerateItemImage");
Rectangle rc = new Rectangle(0, 0, width, height);
Bitmap itemImage = new Bitmap(rc.Width, rc.Height);
/// Create button
rc.Inflate(-3, -3);
GraphicsPath path1 = GetPath(rc, 10);
rc.Inflate(0, 6);
LinearGradientBrush br1 = new LinearGradientBrush(rc, color, Color.White, LinearGradientMode.Vertical);
rc.Inflate(0, -6);
/// Create shadow
Rectangle rc2 = rc;
rc2.Offset(8, 8);
GraphicsPath path2 = GetPath(rc2, 20);
PathGradientBrush br2 = new PathGradientBrush(path2);
br2.CenterColor = ControlPaint.DarkDark(Color.Silver);
br2.SurroundColors = new Color[] { Color.White };
/// Create bubble
Rectangle rc3 = rc;
rc3.Inflate(-15, -rc.Height / 3);
rc3.Y = rc3.Y - 2;
//rc3.Height = rc3.Height;
GraphicsPath path3 = GetPath(rc3, rc3.Height);
LinearGradientBrush br3 = new LinearGradientBrush(rc3, Color.FromArgb(255, Color.White), Color.FromArgb(0, Color.White), LinearGradientMode.Vertical);
itemImage = new Bitmap(width - 2, height);
Graphics g = Graphics.FromImage(itemImage);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.FillPath(br2, path2);
g.FillPath(br1, path1);
g.FillPath(br3, path3);
//SizeF size = g.MeasureString(text, font);
//int fontHeight = (int)size.Height + 5;
//g.DrawString(
// text,
// font,
// Brushes.Black,
// new RectangleF((rc.Width - size.Width) / 2, 2, width, fontHeight));
return itemImage;
}
private Bitmap GetItemsImage(Color color)
{
//Debug.WriteLine("GetItemsImage");
Bitmap itemImage;
if (!_imagesCache.ContainsKey(color))
{
Rectangle rc = new Rectangle(0, 0, Width, _itemHeight);
itemImage = new Bitmap(rc.Width, rc.Height);
/// Create button
rc.Inflate(-3, -3);
GraphicsPath path1 = GetPath(rc, 10);
rc.Inflate(0, 6);
LinearGradientBrush br1 = new LinearGradientBrush(rc, color, Color.White, LinearGradientMode.Vertical);
rc.Inflate(0, -6);
/// Create shadow
Rectangle rc2 = rc;
rc2.Offset(8, 8);
GraphicsPath path2 = GetPath(rc2, 20);
PathGradientBrush br2 = new PathGradientBrush(path2);
br2.CenterColor = ControlPaint.DarkDark(Color.Silver);
br2.SurroundColors = new Color[] { Color.White };
/// Create bubble
Rectangle rc3 = rc;
rc3.Inflate(-15, -rc.Height / 3);
rc3.Y = rc3.Y - 2;
//rc3.Height = rc3.Height;
GraphicsPath path3 = GetPath(rc3, rc3.Height);
LinearGradientBrush br3 = new LinearGradientBrush(rc3, Color.FromArgb(255, Color.White), Color.FromArgb(0, Color.White), LinearGradientMode.Vertical);
itemImage = new Bitmap(Width - 2, _itemHeight);
Graphics g = Graphics.FromImage(itemImage);
g.SmoothingMode = SmoothingMode.AntiAlias;
g.FillPath(br2, path2);
g.FillPath(br1, path1);
g.FillPath(br3, path3);
_imagesCache[color] = itemImage;
}
itemImage = _imagesCache[color];
return itemImage;
}
private void EnableDoubleBuffering()
{
//Debug.WriteLine("EnableDoubleBuffering");
// Set the value of the double-buffering style bits to true.
SetStyle(ControlStyles.DoubleBuffer |
ControlStyles.UserPaint |
ControlStyles.AllPaintingInWmPaint |
ControlStyles.SupportsTransparentBackColor,
true);
UpdateStyles();
}
public void Reset()
{
//Debug.WriteLine("Reset");
_queuedItems = new List<QueueUsageEntry>();
}
//public void Queue(string text, Color color, bool blink)
//{
// //Debug.WriteLine("Queue");
// _queuedItems.Add(new QueueUsageEntry(text, color, blink));
// //this.Invalidate();
//}
public void SetQueue(List<QueueUsageEntry> list)
{
//Debug.WriteLine("SetQueue");
bool invalidate = false;
if (_queuedItems.Count != list.Count)
{
invalidate = true;
}
else
{
int counter = Math.Min(list.Count, _maxItemsVisible);
for (int i = 0; i < counter; i++)
{
if (_queuedItems[i] != list[i])
{
invalidate = true;
break;
}
}
}
if (invalidate)
{
//Debug.WriteLine("_invalidate = true");
_queuedItems = list;
_invalidate = invalidate;
}
//_queuedItems = list;
//_queuedItems.Clear();
//foreach (QueueUsageEntry entry in list)
//{
// _queuedItems.Add(entry);
//}
//_invalidate = true;
//this.Invalidate();
}
protected override void OnPaint(PaintEventArgs e)
{
//Debug.WriteLine("OnPaint");
Bitmap bitmap = new Bitmap(Width, Height);
Graphics g = Graphics.FromImage(bitmap);
if (!Enabled)
{
g.FillPath(Brushes.LightGray, _pathBorder);
g.DrawPath(Pens.Black, _pathBorder);
e.Graphics.DrawImage(bitmap, 0, 0);
return;
}
g.FillPath(Brushes.White, _pathBorder);
int counter = Math.Min(_maxItemsVisible, _queuedItems.Count);
int i = 0;
foreach (QueueUsageEntry entry in _queuedItems)
{
if (i > counter)
{
break;
}
//int top = 0;
//int bottom = 0;
//if (topdown)
//{
// bottom = 1;
// top = bottom;
// top += i * _itemHeight;
// bottom += (i + 1) * _itemHeight;
//}
//else
//{
// bottom = this.Height - 1;
// top = bottom;
// bottom -= i * _itemHeight;
// top -= (i + 1) * _itemHeight;
//}
//g.DrawLine(Pens.Black, 0, top, this.Width, top);
string text = (entry.IsExecuting ? ">" : "") + entry.Text;
if (i == _lastVisibleItemIndex)
{
text = "(" + (_queuedItems.Count - _maxItemsVisible) + ")...";
}
SizeF size = g.MeasureString(entry.Text, Font);
//Debug.WriteLine(size.Width);
Bitmap itemImage = GetItemsImage(entry.Color);
RectangleF slot = _slots[i];
//g.DrawImage(itemImage, -1, top);
g.DrawImage(itemImage, -1, slot.Top-2);
//g.DrawString(text, this.Font, Brushes.Black, new RectangleF((this.Width - size.Width) / 2, top + 2, this.Width, bottom));
g.DrawString(text, Font, Brushes.Black, slot);
++i;
}
g.DrawPath(Pens.Black, _pathBorder);
//g.DrawRectangle(Pens.Black, border);
e.Graphics.DrawImage(bitmap, 0, 0);
}
private static GraphicsPath GetPath(Rectangle rc, int r)
{
//Debug.WriteLine("GetPath");
int x = rc.X, y = rc.Y, w = rc.Width, h = rc.Height;
GraphicsPath path = new GraphicsPath();
path.AddArc(x, y, r, r, 180, 90); //Upper left corner
path.AddArc(x + w - r, y, r, r, 270, 90); //Upper right corner
path.AddArc(x + w - r, y + h - r, r, r, 0, 90); //Lower right corner
path.AddArc(x, y + h - r, r, r, 90, 90); //Lower left corner
path.CloseFigure();
return path;
}
private void ControlRezised()
{
//Debug.WriteLine("ControlRezised");
Graphics g = Graphics.FromHwnd(Handle);
SizeF size = g.MeasureString("X", Font);
g.Dispose();
_itemHeight = (int)size.Height + 5;
_maxItemsVisible = Height / _itemHeight - 1;
_lastVisibleItemIndex = _maxItemsVisible;
_imagesCache = new Dictionary<Color, Bitmap>();
Rectangle border = new Rectangle(0, 0, ClientRectangle.Width - 1, ClientRectangle.Height - 1);
_pathBorder = GetPath(border, 20);
PrepareSlots();
}
private void PrepareSlots()
{
bool topdown = true;
_slots = new RectangleF[_maxItemsVisible+5];
for (int i = 0; i < _slots.Length; i++)
{
int top;
int bottom;
if (topdown)
{
bottom = 1;
top = bottom;
top += i * _itemHeight;
bottom += (i + 1) * _itemHeight;
}
else
{
bottom = Height - 1;
top = bottom;
bottom -= i * _itemHeight;
top -= (i + 1) * _itemHeight;
}
_slots[i] = new RectangleF((Width - 55) / 2, top + 2, Width, bottom);
}
}
private void QueueUsageControl_Resize(object sender, EventArgs e)
{
//Debug.WriteLine("QueueUsageControl_Resize");
ControlRezised();
}
private void timer1_Tick(object sender, EventArgs e)
{
if (_invalidate)
{
_invalidate = false;
}
Invalidate();
}
}
}
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