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Windows7ProgressBar.cs
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Windows7ProgressBar.cs
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using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Windows.Forms;
//Windows7ProgressBar v1.0, created by Wyatt O'Day
//Visit: http://wyday.com/windows-7-progress-bar/
namespace wyDay.Controls {
/// <summary>
/// A Windows progress bar control with Windows Vista & 7 functionality.
/// </summary>
[ToolboxBitmap(typeof(ProgressBar))]
public class Windows7ProgressBar : ProgressBar {
bool showInTaskbar;
private ProgressBarState m_State = ProgressBarState.Normal;
ContainerControl ownerForm;
public Windows7ProgressBar() { }
public Windows7ProgressBar(ContainerControl parentControl) {
ContainerControl = parentControl;
}
public ContainerControl ContainerControl {
get { return ownerForm; }
set {
ownerForm = value;
if (!ownerForm.Visible)
((Form)ownerForm).Shown += Windows7ProgressBar_Shown;
}
}
public override ISite Site {
set {
// Runs at design time, ensures designer initializes ContainerControl
base.Site = value;
if (value == null) return;
IDesignerHost service = value.GetService(typeof(IDesignerHost)) as IDesignerHost;
if (service == null) return;
IComponent rootComponent = service.RootComponent;
ContainerControl = rootComponent as ContainerControl;
}
}
void Windows7ProgressBar_Shown(object sender, System.EventArgs e) {
if (ShowInTaskbar) {
if (Style != ProgressBarStyle.Marquee)
SetValueInTB();
SetStateInTB();
}
((Form)ownerForm).Shown -= Windows7ProgressBar_Shown;
}
/// <summary>
/// Show progress in taskbar
/// </summary>
[DefaultValue(false)]
public bool ShowInTaskbar {
get {
return showInTaskbar;
}
set {
if (showInTaskbar != value) {
showInTaskbar = value;
// send signal to the taskbar.
if (ownerForm != null) {
if (Style != ProgressBarStyle.Marquee)
SetValueInTB();
else
SetStateInTB();
}
}
}
}
/// <summary>
/// Gets or sets the current position of the progress bar.
/// </summary>
/// <returns>The position within the range of the progress bar. The default is 0.</returns>
public new int Value {
get {
return base.Value;
}
set {
base.Value = value;
// send signal to the taskbar.
SetValueInTB();
}
}
/// <summary>
/// Gets or sets the manner in which progress should be indicated on the progress bar.
/// </summary>
/// <returns>One of the ProgressBarStyle values. The default is ProgressBarStyle.Blocks</returns>
public new ProgressBarStyle Style {
get {
return base.Style;
}
set {
base.Style = value;
// set the style of the progress bar
if (showInTaskbar && ownerForm != null) {
SetStateInTB();
}
}
}
/// <summary>
/// The progress bar state for Windows Vista & 7
/// </summary>
[DefaultValue(ProgressBarState.Normal)]
public ProgressBarState State {
get { return m_State; }
set {
m_State = value;
bool wasMarquee = Style == ProgressBarStyle.Marquee;
if (wasMarquee)
// sets the state to normal (and implicity calls SetStateInTB() )
Style = ProgressBarStyle.Blocks;
// set the progress bar state (Normal, Error, Paused)
Windows7Taskbar.SendMessage(Handle, 0x410, (int)value, 0);
if (wasMarquee)
// the Taskbar PB value needs to be reset
SetValueInTB();
else
// there wasn't a marquee, thus we need to update the taskbar
SetStateInTB();
}
}
/// <summary>
/// Advances the current position of the progress bar by the specified amount.
/// </summary>
/// <param name="value">The amount by which to increment the progress bar's current position.</param>
public new void Increment(int value) {
base.Increment(value);
// send signal to the taskbar.
SetValueInTB();
}
/// <summary>
/// Advances the current position of the progress bar by the amount of the System.Windows.Forms.ProgressBar.Step property.
/// </summary>
public new void PerformStep() {
base.PerformStep();
// send signal to the taskbar.
SetValueInTB();
}
private void SetValueInTB() {
if (showInTaskbar) {
ulong maximum = (ulong)(Maximum - Minimum);
ulong progress = (ulong)(Value - Minimum);
Windows7Taskbar.SetProgressValue(ownerForm.Handle, progress, maximum);
}
}
private void SetStateInTB() {
if (ownerForm == null) return;
ThumbnailProgressState thmState = ThumbnailProgressState.Normal;
if (!showInTaskbar)
thmState = ThumbnailProgressState.NoProgress;
else if (Style == ProgressBarStyle.Marquee)
thmState = ThumbnailProgressState.Indeterminate;
else if (m_State == ProgressBarState.Error)
thmState = ThumbnailProgressState.Error;
else if (m_State == ProgressBarState.Pause)
thmState = ThumbnailProgressState.Paused;
Windows7Taskbar.SetProgressState(ownerForm.Handle, thmState);
}
}
/// <summary>
/// The progress bar state for Windows Vista & 7
/// </summary>
public enum ProgressBarState {
/// <summary>
/// Indicates normal progress
/// </summary>
Normal = 1,
/// <summary>
/// Indicates an error in the progress
/// </summary>
Error = 2,
/// <summary>
/// Indicates paused progress
/// </summary>
Pause = 3
}
}