Added a progress spinner control that should work on top of WinForms even with its poor transparent control support

git-svn-id: file:///srv/devel/repo-conversion/nuwi@50 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2019-02-13 11:20:18 +00:00
parent 2b908f18eb
commit 7439c31390
5 changed files with 429 additions and 2 deletions

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@ -59,6 +59,12 @@
<Compile Include="Source\AutoBinding\IAutoBinder.cs" /> <Compile Include="Source\AutoBinding\IAutoBinder.cs" />
<Compile Include="Source\CommonDialogs\CommonDialogManager.cs" /> <Compile Include="Source\CommonDialogs\CommonDialogManager.cs" />
<Compile Include="Source\CommonDialogs\ICommonDialogService.cs" /> <Compile Include="Source\CommonDialogs\ICommonDialogService.cs" />
<Compile Include="Source\Controls\ProgressSpinner.cs">
<SubType>UserControl</SubType>
</Compile>
<Compile Include="Source\Controls\ProgressSpinner.Designer.cs">
<DependentUpon>ProgressSpinner.cs</DependentUpon>
</Compile>
<Compile Include="Source\LateCheckedSynchronizer.cs" /> <Compile Include="Source\LateCheckedSynchronizer.cs" />
<Compile Include="Source\Messages\IMessageService.cs" /> <Compile Include="Source\Messages\IMessageService.cs" />
<Compile Include="Source\Messages\MessageEventArgs.cs" /> <Compile Include="Source\Messages\MessageEventArgs.cs" />
@ -102,6 +108,9 @@
<Compile Include="Source\WindowManager.Test.cs"> <Compile Include="Source\WindowManager.Test.cs">
<DependentUpon>WindowManager.cs</DependentUpon> <DependentUpon>WindowManager.cs</DependentUpon>
</Compile> </Compile>
<EmbeddedResource Include="Source\Controls\ProgressSpinner.resx">
<DependentUpon>ProgressSpinner.cs</DependentUpon>
</EmbeddedResource>
<EmbeddedResource Include="Source\ProgressReporter\ProgressReporterForm.resx"> <EmbeddedResource Include="Source\ProgressReporter\ProgressReporterForm.resx">
<DependentUpon>ProgressReporterForm.cs</DependentUpon> <DependentUpon>ProgressReporterForm.cs</DependentUpon>
<SubType>Designer</SubType> <SubType>Designer</SubType>
@ -143,7 +152,7 @@
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<ProjectReference Include="..\Nuclex.Support.Transactions\Nuclex.Support.Transactions %28net-4.0%29.csproj"> <ProjectReference Include="..\Nuclex.Support.Transactions\Nuclex.Support.Transactions %28net-4.0%29.csproj">
<Project>{2F487C4D-8E06-496F-BCD5-7119B18C78D8}</Project> <Project>{2f487c4d-8e06-496f-bcd5-7119b18c78d8}</Project>
<Name>Nuclex.Support.Transactions %28net-4.0%29</Name> <Name>Nuclex.Support.Transactions %28net-4.0%29</Name>
</ProjectReference> </ProjectReference>
<ProjectReference Include="..\Nuclex.Support\Nuclex.Support %28net-4.0%29.csproj"> <ProjectReference Include="..\Nuclex.Support\Nuclex.Support %28net-4.0%29.csproj">
@ -158,7 +167,6 @@
</ItemGroup> </ItemGroup>
<ItemGroup> <ItemGroup>
<Folder Include="Resources\" /> <Folder Include="Resources\" />
<Folder Include="Source\Controls\" />
</ItemGroup> </ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it. <!-- To modify your build process, add your task inside one of the targets below and uncomment it.

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@ -0,0 +1,49 @@
namespace Nuclex.Windows.Forms.Controls {
partial class ProgressSpinner {
/// <summary> Required designer variable.</summary>
private System.ComponentModel.IContainer components = null;
/// <summary> Clean up any resources being used.</summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing) {
if(disposing && (components != null)) {
components.Dispose();
}
base.Dispose(disposing);
}
#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent() {
this.animationUpdateTimer = new System.Windows.Forms.Timer();
this.SuspendLayout();
//
// animationUpdateTimer
//
this.animationUpdateTimer.Tick += new System.EventHandler(this.animationTimerTicked);
//
// ProgressSpinner
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.Transparent;
this.DoubleBuffered = true;
this.Name = "ProgressSpinner";
this.ResumeLayout(false);
}
#endregion
/// <summary>Timer used to update the progress animation</summary>
private System.Windows.Forms.Timer animationUpdateTimer;
}
} // namespace Nuclex.Windows.Forms.Controls

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@ -0,0 +1,176 @@
using System;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
namespace Nuclex.Windows.Forms.Controls {
/// <summary>Displays a progress spinner to entertain the user while waiting</summary>
public partial class ProgressSpinner : UserControl {
/// <summary>Number of dots the progress spinner will display</summary>
private const int DotCount = 8;
/// <summary>Size of a normal dot (only ever assumed by the trailing dot)</summary>
private const int DotRadius = 4;
/// <summary>
/// The leading dot will be DotCount times this larger than a normal dot
/// </summary>
private const int ScaleFactor = 1;
/// <summary>Initializes a new progress spinner</summary>
public ProgressSpinner() {
SetStyle(
(
ControlStyles.AllPaintingInWmPaint |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.ResizeRedraw | ControlStyles.UserPaint |
ControlStyles.SupportsTransparentBackColor
),
true
);
InitializeComponent();
Disposed += new EventHandler(OnDisposed);
if(!DesignMode) {
StartSpinner();
}
}
/// <summary>Releases all resources owned by the control when it is destroyed</summary>
/// <param name="sender">Control that is being destroyed</param>
/// <param name="arguments">Not used</param>
private void OnDisposed(object sender, EventArgs arguments) {
if(this.dotOutlinePen != null) {
this.dotOutlinePen.Dispose();
this.dotOutlinePen = null;
}
if(this.dotFillBrush != null) {
this.dotFillBrush.Dispose();
this.dotFillBrush = null;
}
}
/// <summary>Starts the spinner's animation</summary>
public void StartSpinner() {
this.spinnerRunning = true;
this.animationUpdateTimer.Enabled = true;
}
/// <summary>Stops the spinner's animation</summary>
public void StopSpinner() {
this.animationUpdateTimer.Enabled = false;
this.spinnerRunning = false;
}
/// <summary>Color used to fill the dots</summary>
public Color DotFillColor {
get { return this.dotFillColor; }
set {
if(value != this.dotFillColor) {
this.dotFillColor = value;
if(this.dotFillBrush != null) {
this.dotFillBrush.Dispose();
this.dotFillBrush = null;
}
}
}
}
/// <summary>Color used for the dots' outline</summary>
public Color DotOutlineColor {
get { return this.dotOutlineColor; }
set {
if(value != this.dotOutlineColor) {
this.dotOutlineColor = value;
if(this.dotOutlinePen != null) {
this.dotOutlinePen.Dispose();
this.dotOutlinePen = null;
}
}
}
}
/// <summary>Called when the control is hidden or shown</summary>
/// <param name="arguments">Not used</param>
protected override void OnVisibleChanged(EventArgs arguments) {
base.OnVisibleChanged(arguments);
this.animationUpdateTimer.Enabled = this.spinnerRunning && Visible;
}
/// <summary>Called when the control should redraw itself</summary>
/// <param name="arguments">Provides access to the drawing surface and tools</param>
protected override void OnPaint(PaintEventArgs arguments) {
if(Parent != null && this.BackColor == Color.Transparent) {
using(var bmp = new Bitmap(Parent.Width, Parent.Height)) {
Parent.Controls.Cast<Control>()
.Where(c => Parent.Controls.GetChildIndex(c) > Parent.Controls.GetChildIndex(this))
.Where(c => c.Bounds.IntersectsWith(this.Bounds))
.OrderByDescending(c => Parent.Controls.GetChildIndex(c))
.ToList()
.ForEach(c => c.DrawToBitmap(bmp, c.Bounds));
arguments.Graphics.DrawImage(bmp, -Left, -Top);
}
}
if(this.dotOutlinePen == null) {
this.dotOutlinePen = new Pen(this.dotOutlineColor);
}
if(this.dotFillBrush == null) {
this.dotFillBrush = new SolidBrush(this.dotFillColor);
}
//e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
int diameter = Math.Min(Width, Height);
PointF center = new PointF(diameter / 2.0f, diameter / 2.0f);
int bigRadius = diameter / 2 - DotRadius - (DotCount - 1) * ScaleFactor;
float unitAngle = 360 / DotCount;
for(int index = 0; index < DotCount; ++index) {
int dotIndex = (index + leadingDotIndex) % DotCount;
var dotPosition = new PointF(
center.X + (float)(bigRadius * Math.Cos(unitAngle * dotIndex * Math.PI / 180)),
center.Y + (float)(bigRadius * Math.Sin(unitAngle * dotIndex * Math.PI / 180))
);
int currentDotRadius = DotRadius + index * ScaleFactor;
PointF c1 = new PointF(dotPosition.X - currentDotRadius, dotPosition.Y - currentDotRadius);
arguments.Graphics.FillEllipse(this.dotFillBrush, c1.X, c1.Y, 2 * currentDotRadius, 2 * currentDotRadius);
arguments.Graphics.DrawEllipse(this.dotOutlinePen, c1.X, c1.Y, 2 * currentDotRadius, 2 * currentDotRadius);
}
}
/// <summary>Called when the animation timer ticks to update the animation state</summary>
/// <param name="sender">Animation timer that has ticked</param>
/// <param name="arguments">Not used</param>
private void animationTimerTicked(object sender, EventArgs arguments) {
this.leadingDotIndex = (this.leadingDotIndex + 1) % DotCount; // Advance the animation
Invalidate(); // Request a redraw at the earliest opportune time
}
/// <summary>Whether the spinner has been started</summary>
private bool spinnerRunning;
/// <summary>Color in which the dots will be filled</summary>
private Color dotFillColor = Color.RoyalBlue;
/// <summary>Color that will be used for the dots' outline</summary>
private Color dotOutlineColor = Color.White;
/// <summary>Brush used to fill the dots</summary>
private Brush dotFillBrush;
/// <summary>Brush used for the dots' outline</summary>
private Pen dotOutlinePen;
/// <summary>Index of the currently leading dot</summary>
private int leadingDotIndex = 0;
}
} // namespace Nuclex.Windows.Forms.Controls

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@ -0,0 +1,123 @@
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@ -0,0 +1,71 @@
#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2019 Nuclex Development Labs
This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.
You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion
using System;
using Nuclex.Support;
namespace Nuclex.Windows.Forms.ViewModels {
/// <summary>Base class for view models that have multiple child view models</summary>
/// <typeparam name="TPageEnumeration">Enum type by which pages can be indicated</typeparam>
public abstract class MultiPageViewModel<TPageEnumeration> : Observable
where TPageEnumeration : IEquatable<TPageEnumeration> {
/// <summary>Initializes a new multi-page view model</summary>
/// <param name="windowManager">
/// Window manager the view model uses to create child views
/// </param>
/// <param name="cachePageViewModels">
/// Whether child view models will be kept alive and reused
/// </param>
public MultiPageViewModel(IWindowManager windowManager, bool cachePageViewModels = false) {
this.windowManager = windowManager;
}
/// <summary>Child page that is currently being displayed by the view model</summary>
public TPageEnumeration ActivePage {
get { return this.activePage; }
set {
if(!this.activePage.Equals(value)) {
this.activePage = value;
OnPropertyChanged(nameof(ActivePage));
}
}
}
/// <summary>Windowmanager that can create view models and display other views</summary>
protected IWindowManager WindowManager {
get { return this.windowManager; }
}
/// <summary>Creates a view model for the specified page</summary>
/// <param name="page">Page for which a view model will be created</param>
/// <returns>The view model for the specified page</returns>
protected abstract object createViewModelForPage(TPageEnumeration page);
/// <summary>Page that is currently active in the multi-page view model</summary>
private TPageEnumeration activePage;
/// <summary>Window manager that can be used to display other views</summary>
private IWindowManager windowManager;
}
} // namespace Nuclex.Windows.Forms.ViewModels