private void RenderPreview()
{
var handle = SelectedWindow.Value.Handle;
var(scaleX, scaleY) = (DpiService.Instance.CurrentDpi.ScaleX, DpiService.Instance.CurrentDpi.ScaleY);
var rect = RobockUtil.AsRect(0, 0, _desktopWindowManager.Thumbnails[0].Size.Height, _desktopWindowManager.Thumbnails[0].Size.Width);
if (SelectedAreaHeight.Value != 0)
{
rect = CalcRenderingRect();
}
var left = PreviewAreaLeft.Value * scaleX;
var top = PreviewAreaTop.Value * scaleY;
var height = PreviewAreaHeight.Value * scaleY;
var width = PreviewAreaWidth.Value * scaleX;
if (_desktopWindowManager.Thumbnails[1].IsRendering)
{
_desktopWindowManager.Rerender(1, (int)left, (int)top, (int)height, (int)width, rect);
}
else
{
_desktopWindowManager.Start(1, handle, (int)left, (int)top, (int)height, (int)width, rect);
}
}
private IntPtr FindWorkerW()
{
var progman = NativeMethods.FindWindow("Progman", null);
if (RobockUtil.IsOldWindows())
{
NativeMethods.SendMessageTimeout(progman, 0x052C, new IntPtr(0), IntPtr.Zero, SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out _);
}
else
{
NativeMethods.SendMessageTimeout(progman, 0x052C, new IntPtr(0x0000000D), new IntPtr(0), SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out _);
NativeMethods.SendMessageTimeout(progman, 0x052C, new IntPtr(0x0000000D), new IntPtr(1), SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out _);
}
var workerW = IntPtr.Zero;
NativeMethods.EnumWindows((hWnd, lParam) =>
{
var shell = NativeMethods.FindWindowEx(hWnd, IntPtr.Zero, "SHELLDLL_DefView", null);
if (shell != IntPtr.Zero)
{
workerW = NativeMethods.FindWindowEx(IntPtr.Zero, hWnd, "WorkerW", null);
}
return(true);
}, IntPtr.Zero);
return(workerW);
}
private RECT CalcRenderingRect()
{
// 描画サイズから、縮小された割合を計算
var multi = _desktopWindowManager.Thumbnails[0].Size.Height / (double)EditorAreaHeight.Value;
// Grid と Image のズレが大きいと、描画領域がずれてしまうので、補正する
var diff = new Size(EditorAreaLeft.Value - GridAreaLeft.Value, EditorAreaTop.Value - GridAreaTop.Value);
return(RobockUtil.AsRect(SelectedAreaTop.Value - diff.Height, SelectedAreaLeft.Value - diff.Width, SelectedAreaHeight.Value, SelectedAreaWidth.Value,
multi));
}
public DesktopViewModel(Desktop desktop, WindowManager windowManager, DesktopWindowManager desktopWindowManager)
: base($":Desktop: Desktop {desktop.No}")
{
_desktop = desktop;
_desktopWindowManager = desktopWindowManager;
// 仮想スクリーン周りの計算
_offsetX = (SystemParameters.VirtualScreenLeft < 0 ? -1 : 1) * SystemParameters.VirtualScreenLeft;
_offsetY = (SystemParameters.VirtualScreenTop < 0 ? -1 : 1) * SystemParameters.VirtualScreenTop;
// タブの選択状態
IsSelected = new ReactiveProperty <bool>(false);
IsSelected.Subscribe(w =>
{
if (w && CanRender())
{
RenderEditor();
}
else
{
_desktopWindowManager.Stop(0);
_desktopWindowManager.Stop(1);
}
}).AddTo(this);
// DPI 周り
DpiService.Instance.ObserveProperty(w => w.CurrentDpi).Where(_ => CanRender()).Subscribe(w =>
{
RenderEditor();
RenderPreview();
}).AddTo(this);
// エディター
EditorAspectRatio = new ReactiveProperty <string>(FakeImg.Default);
EditorAreaLeft = new ReactiveProperty <int>();
EditorAreaTop = new ReactiveProperty <int>();
EditorAreaHeight = new ReactiveProperty <int>();
EditorAreaWidth = new ReactiveProperty <int>();
new[]
{
EditorAreaLeft,
EditorAreaTop,
EditorAreaHeight,
EditorAreaWidth
}.CombineLatest().Throttle(TimeSpan.FromMilliseconds(50))
.Where(w => CanRender()).Subscribe(w => RenderEditor()).AddTo(this);
desktopWindowManager.Thumbnails[0].ObserveProperty(w => w.Size).Subscribe(w =>
{
//
EditorAspectRatio.Value = FakeImg.HxW(RobockUtil.AspectRatio(w.Width, w.Height));
}).AddTo(this);
// 選択範囲
SelectedAreaLeft = new ReactiveProperty <int>();
SelectedAreaTop = new ReactiveProperty <int>();
SelectedAreaHeight = new ReactiveProperty <int>();
SelectedAreaWidth = new ReactiveProperty <int>();
new[]
{
SelectedAreaLeft,
SelectedAreaTop,
SelectedAreaHeight,
SelectedAreaWidth
}.CombineLatest().Throttle(TimeSpan.FromMilliseconds(50))
.Where(w => CanRender()).Subscribe(w => RenderPreview()).AddTo(this);
// プレビュー
AspectRatio = FakeImg.HxW(RobockUtil.AspectRatio(_desktop.Width, _desktop.Height));
PreviewAreaLeft = new ReactiveProperty <int>();
PreviewAreaTop = new ReactiveProperty <int>();
PreviewAreaHeight = new ReactiveProperty <int>();
PreviewAreaWidth = new ReactiveProperty <int>();
new[]
{
PreviewAreaLeft,
PreviewAreaTop,
PreviewAreaHeight,
PreviewAreaWidth
}.CombineLatest().Throttle(TimeSpan.FromMilliseconds(50))
.Where(w => CanRender()).Subscribe(w =>
{
//
RenderPreview();
});
desktopWindowManager.Thumbnails[0]
.ObserveProperty(w => w.IsRendering)
.Where(w => w && CanRender())
.Subscribe(w =>
{
//
RenderPreview();
}).AddTo(this);
// 親
GridAreaLeft = new ReactiveProperty <int>();
GridAreaTop = new ReactiveProperty <int>();
// 他
Windows = windowManager.Windows.ToReadOnlyReactiveCollection(w => new WindowViewModel(w));
SelectedWindow = new ReactiveProperty <WindowViewModel>();
SelectedWindow.Where(w => w != null && CanRender()).Subscribe(w =>
{
_desktopWindowManager.Stop(0);
_desktopWindowManager.Stop(1);
RenderEditor();
}).AddTo(this);
ApplyWallpaperCommand = new[]
{
SelectedWindow.Select(w => w != null),
_desktopWindowManager.Thumbnails[0].ObserveProperty(w => w.IsRendering),
desktop.ObserveProperty(w => w.IsConnecting).Select(w => !w)
}.CombineLatest().Select(w => w.All(v => v)).ToReactiveCommand();
ApplyWallpaperCommand.Subscribe(() =>
{
Task.Run(async() =>
{
await _desktop.Handshake();
var rect = SelectedAreaHeight.Value != 0
? CalcRenderingRect()
: new RECT
{
top = 0,
left = 0,
bottom = _desktopWindowManager.Thumbnails[0].Size.Height,
right = _desktopWindowManager.Thumbnails[0].Size.Width
};
await _desktop.ApplyWallpaper(SelectedWindow.Value.Handle, SelectedAreaHeight.Value != 0 ? CalcRenderingRect() : rect);
});
}).AddTo(this);
DiscardWallpaperCommand = new[]
{
SelectedWindow.Select(w => w != null),
desktop.ObserveProperty(w => w.IsConnecting)
}.CombineLatest().Select(w => w.All(v => v)).ToReactiveCommand();
DiscardWallpaperCommand.Subscribe(() => Task.Run(async() => await _desktop.DiscardWallpaper())).AddTo(this);
ReloadWindowsCommand = new ReactiveCommand();
ReloadWindowsCommand.Subscribe(_ => windowManager.ForceUpdate()).AddTo(this);
}