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Add movement and resize capabilities to the Thumbnail windows in borderless mode

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This commit is contained in:
Anton Kasyanov
2016-08-12 22:06:38 +03:00
parent 35e4a9db01
commit ae071a9a1c
6 changed files with 124 additions and 49 deletions
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141
Eve-O-Preview/UI/Implementation/ThumbnailView.cs
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@@ -8,22 +8,24 @@ namespace EveOPreview.UI
public partial class ThumbnailView : Form, IThumbnailView
{
#region Private fields
//private readonly IThumbnailManager _manager;
private readonly ThumbnailOverlay _overlay;
// This is pure brainless View
// Just somewhat more complex than usual
// Part of the logic (namely current size / position management)
// was moved to the view due to the performance reasons
private bool _isThumbnailSetUp;
private bool _isOverlayVisible;
private bool _isTopMost;
private bool _isPositionChanged;
private bool _isSizeChanged;
private bool _isCustomMouseModeActive;
private DateTime _suppressResizeEventsTimestamp;
private DWM_THUMBNAIL_PROPERTIES _thumbnail;
private IntPtr _thumbnailHandle;
private Size _baseSize;
private Point _baseLocation;
private Size _baseZoomSize;
private Point _baseZoomLocation;
private Point _baseMousePosition;
private Size _baseZoomMaximumSize;
private HotkeyHandler _hotkeyHandler;
#endregion
@@ -39,12 +41,13 @@ namespace EveOPreview.UI
this._isPositionChanged = true;
this._isSizeChanged = true;
this._isCustomMouseModeActive = false;
this._suppressResizeEventsTimestamp = DateTime.UtcNow;
InitializeComponent();
this._overlay = new ThumbnailOverlay(this, this.ThumbnailActivated_Handler);
this._overlay = new ThumbnailOverlay(this, this.MouseDown_Handler);
}
public IntPtr Id { get; set; }
@@ -153,10 +156,18 @@ namespace EveOPreview.UI
public void SetFrames(bool enable)
{
FormBorderStyle style = enable ? FormBorderStyle.SizableToolWindow : FormBorderStyle.None;
// No need to change the borders style if it is ALREADY correct
if (this.FormBorderStyle == style)
{
return;
}
// Fix for WinForms issue with the Resize event being fired with inconsistent ClientSize value
// Any Resize events fired before this timestamp will be ignored
this._suppressResizeEventsTimestamp = DateTime.UtcNow.AddMilliseconds(450);
this.FormBorderStyle = enable ? FormBorderStyle.SizableToolWindow : FormBorderStyle.None;
this.FormBorderStyle = style;
// Notify about possible contents position change
this._isSizeChanged = true;
@@ -178,11 +189,8 @@ namespace EveOPreview.UI
public void ZoomIn(ViewZoomAnchor anchor, int zoomFactor)
{
this._baseSize = this.Size;
this._baseLocation = this.Location;
int oldWidth = this._baseSize.Width;
int oldHeight = this._baseSize.Height;
int oldWidth = this._baseZoomSize.Width;
int oldHeight = this._baseZoomSize.Height;
int locationX = this.Location.X;
int locationY = this.Location.Y;
@@ -193,6 +201,7 @@ namespace EveOPreview.UI
// First change size, THEN move the window
// Otherwise there is a chance to fail in a loop
// Zoom requied -> Moved the windows 1st -> Focus is lost -> Window is moved back -> Focus is back on -> Zoom required -> ...
this.MaximumSize = new Size(0, 0);
this.Size = new Size(newWidth, newHeight);
switch (anchor)
@@ -217,7 +226,7 @@ namespace EveOPreview.UI
break;
case ViewZoomAnchor.SW:
this.Location = new Point(locationX, locationY - newHeight + this._baseSize.Height);
this.Location = new Point(locationX, locationY - newHeight + this._baseZoomSize.Height);
break;
case ViewZoomAnchor.S:
this.Location = new Point(locationX - newWidth / 2 + oldWidth / 2, locationY - newHeight + oldHeight);
@@ -230,8 +239,7 @@ namespace EveOPreview.UI
public void ZoomOut()
{
this.Size = this._baseSize;
this.Location = this._baseLocation;
this.RestoreWindowSizeAndLocation();
}
public void RegisterHotkey(Keys hotkey)
@@ -257,7 +265,6 @@ namespace EveOPreview.UI
// There can be a lot of possible exception reasons here
// In case of any of them the hotkey setting is silently ignored
}
}
public void UnregisterHotkey()
@@ -291,7 +298,7 @@ namespace EveOPreview.UI
this._thumbnail.rcDestination = new RECT(0, 0, this.ClientSize.Width, this.ClientSize.Height);
try
{
DwmApiNativeMethods.DwmUpdateThumbnailProperties(this._thumbnailHandle, this._thumbnail);
WindowManagerNativeMethods.DwmUpdateThumbnailProperties(this._thumbnailHandle, this._thumbnail);
}
catch (ArgumentException)
{
@@ -347,7 +354,7 @@ namespace EveOPreview.UI
get
{
var Params = base.CreateParams;
Params.ExStyle |= (int)DwmApiNativeMethods.WS_EX_TOOLWINDOW;
Params.ExStyle |= (int)WindowManagerNativeMethods.WS_EX_TOOLWINDOW;
return Params;
}
}
@@ -370,34 +377,46 @@ namespace EveOPreview.UI
this.ThumbnailResized?.Invoke(this.Id);
}
private void Focused_Handler(object sender, EventArgs e)
private void MouseEnter_Handler(object sender, EventArgs e)
{
this.ExitCustomMouseMode();
this.SaveWindowSizeAndLocation();
this.ThumbnailFocused?.Invoke(this.Id);
}
private void LostFocus_Handler(object sender, EventArgs e)
private void MouseLeave_Handler(object sender, EventArgs e)
{
this.ThumbnailLostFocus?.Invoke(this.Id);
}
private void ThumbnailActivated_Handler(object sender, MouseEventArgs e)
private void MouseDown_Handler(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
this.ThumbnailActivated?.Invoke(this.Id);
}
//if (e.Button == MouseButtons.Right)
//{
// // do smth cool?
//}
if ((e.Button == MouseButtons.Right) || (e.Button == (MouseButtons.Left | MouseButtons.Right)))
{
this.EnterCustomMouseMode();
}
}
//if (e.Button == MouseButtons.Middle)
//{
//// Trigger full thumbnail refresh
//this.UnregisterThumbnail();
//this.Refresh();
//}
private void MouseMove_Handler(object sender, MouseEventArgs e)
{
if (this._isCustomMouseModeActive)
{
this.ProcessCustomMouseMode(e.Button.HasFlag(MouseButtons.Left), e.Button.HasFlag(MouseButtons.Right));
}
}
private void MouseUp_Handler(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
this.ExitCustomMouseMode();
}
}
private void HotkeyPressed_Handler(object sender, HandledEventArgs e)
@@ -408,9 +427,29 @@ namespace EveOPreview.UI
}
#endregion
// This pair of methods saves/restores certain window propeties
// Methods are used to remove the 'Zoom' effect (if any) when the
// custom resize/move mode is activated
// Methods are kept on this level because moving to the presenter
// the code that responds to the mouse events like movement
// seems like a huge overkill
private void SaveWindowSizeAndLocation()
{
this._baseZoomSize = this.Size;
this._baseZoomLocation = this.Location;
this._baseZoomMaximumSize = this.MaximumSize;
}
private void RestoreWindowSizeAndLocation()
{
this.Size = this._baseZoomSize;
this.MaximumSize = this._baseZoomMaximumSize;
this.Location = this._baseZoomLocation;
}
private void RegisterThumbnail()
{
this._thumbnailHandle = DwmApiNativeMethods.DwmRegisterThumbnail(this.Handle, this.Id);
this._thumbnailHandle = WindowManagerNativeMethods.DwmRegisterThumbnail(this.Handle, this.Id);
this._thumbnail = new DWM_THUMBNAIL_PROPERTIES();
this._thumbnail.dwFlags = DWM_TNP_CONSTANTS.DWM_TNP_VISIBLE
@@ -428,11 +467,45 @@ namespace EveOPreview.UI
{
try
{
DwmApiNativeMethods.DwmUnregisterThumbnail(thumbnailHandle);
WindowManagerNativeMethods.DwmUnregisterThumbnail(thumbnailHandle);
}
catch (ArgumentException)
{
}
}
private void EnterCustomMouseMode()
{
this.RestoreWindowSizeAndLocation();
this._isCustomMouseModeActive = true;
this._baseMousePosition = Control.MousePosition;
}
private void ProcessCustomMouseMode(bool leftButton, bool rightButton)
{
Point mousePosition = Control.MousePosition;
int offsetX = mousePosition.X - this._baseMousePosition.X;
int offsetY = mousePosition.Y - this._baseMousePosition.Y;
this._baseMousePosition = mousePosition;
// Left + Right buttons trigger thumbnail resize
// Right button only trigger thumbnail movement
if (leftButton && rightButton)
{
this.Size = new Size(this.Size.Width + offsetX, this.Size.Height + offsetY);
this._baseZoomSize = this.Size;
}
else
{
this.Location = new Point(this.Location.X + offsetX, this.Location.Y + offsetY);
this._baseZoomLocation = this.Location;
}
}
private void ExitCustomMouseMode()
{
this._isCustomMouseModeActive = false;
}
}
}