ProgressBar.cs :  » 2.6.4-mono-.net-core » System.Windows.Forms » System » Windows » Forms » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Windows.Forms 
System.Windows.Forms » System » Windows » Forms » ProgressBar.cs
//
// System.Windows.Forms.ProgressBar
//
// Author:
//   stubbed out by Jaak Simm (jaaksimm@firm.ee)
//   Dennis Hayes (dennish@Raytek.com)
//   Aleksey Ryabchuk (ryabchuk@yahoo.com)
//
// (C) Ximian, Inc., 2002
//

//
// 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.
//

using System.Drawing;
using System.Drawing.Printing;
using System.ComponentModel;

namespace System.Windows.Forms{

  /// <summary>
  /// Represents a Windows progress bar control.
  /// </summary>

  public sealed class ProgressBar : Control {

    #region Fields
    int maximum = 100;
    int minimum = 0;
    int step    = 10;
    int val     = 0;
    #endregion
    
    #region Constructor

    public ProgressBar() {
      SetStyle ( ControlStyles.Selectable, false );
    }

    #endregion
    
    #region Properties
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override bool AllowDrop {
      get {  return base.AllowDrop;  }
      set {  base.AllowDrop = value;  }
    }
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override Color BackColor {
      get {  return base.BackColor;  }
      set {  base.BackColor = value;  }
    }
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override Image BackgroundImage   {
      get {  return base.BackgroundImage; }
      set {  base.BackgroundImage = value; }
    }

    /// This member supports the .NET Framework infrastructure and is not intended to be used directly from your code.
    /// public new bool CausesValidation {get; set;}
    
    [MonoTODO]
    protected override CreateParams CreateParams {
      get {
        CreateParams createParams = base.CreateParams;

        createParams.ClassName = "msctls_progress32";

        createParams.Style = (int) (
          WindowStyles.WS_CHILD | 
          WindowStyles.WS_VISIBLE |
          WindowStyles.WS_CLIPCHILDREN |
          WindowStyles.WS_CLIPSIBLINGS );

        return createParams;
      }    
    }

    
    protected override ImeMode DefaultImeMode {
      get {  return ImeMode.Disable;  }
    }

    protected override Size DefaultSize {
      get {  return new Size(100, 23); }
    }
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override Font Font {
      get {  return base.Font;  }
      set {  base.Font = value; }
    }
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override Color ForeColor  {
      get {  return base.ForeColor;  }
      set {  base.ForeColor = value; }
    }
    
    /// This member supports the .NET Framework infrastructure and is not intended to be used directly from your code.
    /// public new ImeMode ImeMode {get; set;}
    
    public int Maximum {
      get {
        return maximum;
      }
      set {
        if ( value < 0 )
          throw new ArgumentException( 
            string.Format("Value '{0}' must be greater than or equal to 0.", value ));
        maximum = value;
        if ( IsHandleCreated )
          Win32.SendMessage( Handle, (int)ProgressBarMessages.PBM_SETRANGE32, Minimum, Maximum );
      }
    }
    
    public int Minimum {
      get {
        return minimum;
      }
      set {
        if ( value < 0 )
          throw new ArgumentException( 
            string.Format("Value '{0}' must be greater than or equal to 0.", value ));
        minimum = value;
        if ( IsHandleCreated )
          Win32.SendMessage( Handle, (int)ProgressBarMessages.PBM_SETRANGE32, Minimum, Maximum );
      }
    }
    
    /// This member supports the .NET Framework infrastructure and is not intended to be used directly from your code.
    /// public new bool TabStop {get; set;}
    /// 
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override RightToLeft RightToLeft {
      get {  return base.RightToLeft; }
      set {  base.RightToLeft = value; }
    }
    
    public int Step {
      get {   return step; }
      set {
        step = value;
        if ( IsHandleCreated )
          Win32.SendMessage( Handle, (int)ProgressBarMessages.PBM_SETSTEP, Step, 0 );
      }
    }
    
    [EditorBrowsable (EditorBrowsableState.Never)]   
    public override string Text {
      get {   return base.Text; }
      set {  base.Text = value; }
    }
    
    public int Value {
      get {
        if ( IsHandleCreated )
          val = (int)Win32.SendMessage ( Handle, (int)ProgressBarMessages.PBM_GETPOS, 0, 0 );
        return val;
      }
      set {
        if ( value < Minimum || value > Maximum )
          throw new ArgumentException(
            string.Format("'{0}' is not a valid value for 'Value'. 'Value' should be between 'Minimum' and 'Maximum'", value));

        val = value; 

        if ( IsHandleCreated )
          Win32.SendMessage(Handle, (int)ProgressBarMessages.PBM_SETPOS, val, 0);
      }
    }
    #endregion
    
    #region Methods

    protected override void CreateHandle()   {
      initCommonControlsLibrary ( );
      base.CreateHandle();
    }
    
    public void Increment(int value) {
      int newValue = Value + value;
      if ( newValue < Minimum )
        newValue = Minimum;
      if ( newValue > Maximum )
        newValue = Maximum;
      Value = newValue;
    }
    
    protected override void OnHandleCreated(EventArgs e) {
      base.OnHandleCreated(e);
      Win32.SendMessage(Handle, (int)ProgressBarMessages.PBM_SETRANGE32, Minimum, Maximum);
      Win32.SendMessage(Handle, (int)ProgressBarMessages.PBM_SETPOS, Value, 0);
      Win32.SendMessage(Handle, (int)ProgressBarMessages.PBM_SETSTEP, Step, 0);
    }
    
    public void PerformStep() {
      if ( IsHandleCreated )
        Win32.SendMessage(Handle, (int)ProgressBarMessages.PBM_STEPIT, 0, 0);
    }
    
    public override string ToString() {
      return string.Format ("{0}, Minimum: {1}, Maximum: {2}, Value: {3}", 
            GetType().FullName.ToString (),
            Maximum.ToString (),
            Minimum.ToString (),
            Value.ToString () );
    }
    #endregion

    private void initCommonControlsLibrary  ( ) {
      if ( !RecreatingHandle ) {
        INITCOMMONCONTROLSEX  initEx = new INITCOMMONCONTROLSEX();
        initEx.dwICC = CommonControlInitFlags.ICC_PROGRESS_CLASS;
        Win32.InitCommonControlsEx(initEx);
      }
    }
  }
}
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