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Allow to switch clients even if Aero is not enabled

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This commit is contained in:
Anton Kasyanov
2018-01-29 22:11:50 +02:00
parent 2a89cb43a6
commit a60b1535e3
3 changed files with 64 additions and 35 deletions
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96
Eve-O-Preview/UI/Implementation/ThumbnailView.cs
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@@ -8,6 +8,7 @@ namespace EveOPreview.UI
public partial class ThumbnailView : Form, IThumbnailView
{
#region Private fields
private readonly bool _isDwmCompositionEnabled;
private readonly ThumbnailOverlay _overlay;
// Part of the logic (namely current size / position management)
@@ -52,6 +53,7 @@ namespace EveOPreview.UI
InitializeComponent();
this._overlay = new ThumbnailOverlay(this, this.MouseDown_Handler);
this._isDwmCompositionEnabled = WindowManagerNativeMethods.DwmIsCompositionEnabled();
}
public IntPtr Id { get; set; }
@@ -321,37 +323,10 @@ namespace EveOPreview.UI
if (sizeChanged)
{
// This approach would work only for square-shaped thumbnail window
// To get PROPER results we have to do some crazy math
//int delta = this._isHighlightEnabled ? this._highlightWidth : 0;
//this._thumbnail.rcDestination = new RECT(0 + delta, 0 + delta, this.ClientSize.Width - delta, this.ClientSize.Height - delta);
if (this._isHighlightEnabled)
{
int baseWidth = this.ClientSize.Width;
int baseHeight = this.ClientSize.Height;
double baseAspectRatio = ((double)baseWidth) / baseHeight;
this.RecalculateThumbnailSize();
int actualHeight = baseHeight - 2 * this._highlightWidth;
double desiredWidth = actualHeight * baseAspectRatio;
int actualWidth = (int)Math.Round(desiredWidth, MidpointRounding.AwayFromZero);
int highlightWidthLeft = (baseWidth - actualWidth) / 2;
int highlightWidthRight = baseWidth - actualWidth - highlightWidthLeft;
this.UpdateThumbnail();
this._thumbnail.rcDestination = new RECT(0 + highlightWidthLeft, 0 + this._highlightWidth, baseWidth - highlightWidthRight, baseHeight - this._highlightWidth);
}
else
{
//No highlighting enables, so no odd math required
this._thumbnail.rcDestination = new RECT(0, 0, this.ClientSize.Width, this.ClientSize.Height);
}
try
{
WindowManagerNativeMethods.DwmUpdateThumbnailProperties(this._thumbnailHandle, this._thumbnail);
}
catch (ArgumentException)
{
//This exception will be thrown if the EVE client disappears while this method is running
}
this._isSizeChanged = false;
}
@@ -391,6 +366,32 @@ namespace EveOPreview.UI
this._overlay.Refresh();
}
private void RecalculateThumbnailSize()
{
// This approach would work only for square-shaped thumbnail window
// To get PROPER results we have to do some crazy math
//int delta = this._isHighlightEnabled ? this._highlightWidth : 0;
//this._thumbnail.rcDestination = new RECT(0 + delta, 0 + delta, this.ClientSize.Width - delta, this.ClientSize.Height - delta);
if (!this._isHighlightEnabled)
{
//No highlighting enables, so no odd math required
this._thumbnail.rcDestination = new RECT(0, 0, this.ClientSize.Width, this.ClientSize.Height);
return;
}
int baseWidth = this.ClientSize.Width;
int baseHeight = this.ClientSize.Height;
double baseAspectRatio = ((double)baseWidth) / baseHeight;
int actualHeight = baseHeight - 2 * this._highlightWidth;
double desiredWidth = actualHeight * baseAspectRatio;
int actualWidth = (int)Math.Round(desiredWidth, MidpointRounding.AwayFromZero);
int highlightWidthLeft = (baseWidth - actualWidth) / 2;
int highlightWidthRight = baseWidth - actualWidth - highlightWidthLeft;
this._thumbnail.rcDestination = new RECT(0 + highlightWidthLeft, 0 + this._highlightWidth, baseWidth - highlightWidthRight, baseHeight - this._highlightWidth);
}
#region GUI events
protected override CreateParams CreateParams
{
@@ -480,22 +481,49 @@ namespace EveOPreview.UI
#region Thumbnail management
private void RegisterThumbnail()
{
this._thumbnailHandle = WindowManagerNativeMethods.DwmRegisterThumbnail(this.Handle, this.Id);
this._isThumbnailSetUp = true;
this._thumbnail = new DWM_THUMBNAIL_PROPERTIES();
this._thumbnail.dwFlags = DWM_TNP_CONSTANTS.DWM_TNP_VISIBLE
+ DWM_TNP_CONSTANTS.DWM_TNP_OPACITY
+ DWM_TNP_CONSTANTS.DWM_TNP_RECTDESTINATION
+ DWM_TNP_CONSTANTS.DWM_TNP_SOURCECLIENTAREAONLY;
+ DWM_TNP_CONSTANTS.DWM_TNP_OPACITY
+ DWM_TNP_CONSTANTS.DWM_TNP_RECTDESTINATION
+ DWM_TNP_CONSTANTS.DWM_TNP_SOURCECLIENTAREAONLY;
this._thumbnail.opacity = 255;
this._thumbnail.fVisible = true;
this._thumbnail.fSourceClientAreaOnly = true;
this._isThumbnailSetUp = true;
if (!this._isDwmCompositionEnabled)
{
return;
}
this._thumbnailHandle = WindowManagerNativeMethods.DwmRegisterThumbnail(this.Handle, this.Id);
}
private void UpdateThumbnail()
{
if (!this._isDwmCompositionEnabled)
{
return;
}
try
{
WindowManagerNativeMethods.DwmUpdateThumbnailProperties(this._thumbnailHandle, this._thumbnail);
}
catch (ArgumentException)
{
//This exception will be thrown if the EVE client disappears while this method is running
}
}
private void UnregisterThumbnail(IntPtr thumbnailHandle)
{
if (!this._isDwmCompositionEnabled)
{
return;
}
try
{
WindowManagerNativeMethods.DwmUnregisterThumbnail(thumbnailHandle);