public ImageCaptureWindow(System.Drawing.Rectangle rect, AreaSelection areaSelection)
{
InitializeComponent();
MouseUp += OnMouseUp;
MouseDown += OnMouseDown;
MouseMove += OnMouseMove;
Loaded += OnMainWindowLoaded;
_scalor = DpiUtilities.GetVirtualPixelScale(this);
_areaSelection = areaSelection;
var monitors = _areaSelection.GetMonitorsInformation();
_screenShotImage = new ScreenshotImage();
_screenScalor = DpiUtilities.GetScreenScalingFactor();
_screenShotImage.SnapShot(rect, _screenScalor);
WindowStartupLocation = WindowStartupLocation.Manual;
SourceInitialized += (sender, e) =>
{
IntPtr hWnd = new WindowInteropHelper(this).Handle;
NativeMethods.SetWindowPos(hWnd, (IntPtr)NativeMethods.SetWindowPosInsertAfter.HWND_TOP, rect.Left, rect.Top, rect.Width, rect.Height, 0);
};
var bmDesktopSource = ScreenCapture.GetBitmapSource(_screenShotImage.ScreenSnapshotImage);
BackgroundImage.Fill = new ImageBrush(bmDesktopSource);
// MagnifierBackgroundImage.Source = bmDesktopSource;
}
private void WmGetMinMaxInfo(System.IntPtr hwnd, System.IntPtr lParam)
{
NativeMethods.MINMAXINFO mmi = (NativeMethods.MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(NativeMethods.MINMAXINFO));
// Adjust the maximized size and position to fit the work area of the correct monitor
System.IntPtr monitor = NativeMethods.GetMonitorFromWindow(hwnd);
// MinHeight and MinWidth need to be scaled from Virtual Pixels back to Logical Pixels
DpiScale dpiScale = VirtualPixelScale;
if (monitor != System.IntPtr.Zero)
{
NativeMethods.MONITORINFO monitorInfo = new NativeMethods.MONITORINFO();
NativeMethods.GetMonitorInfo(monitor, monitorInfo);
NativeMethods.RECT rcWorkArea = monitorInfo.rcWork;
NativeMethods.RECT rcMonitorArea = monitorInfo.rcMonitor;
mmi.ptMaxPosition.x = Math.Abs(rcWorkArea.left - rcMonitorArea.left);
mmi.ptMaxPosition.y = Math.Abs(rcWorkArea.top - rcMonitorArea.top);
mmi.ptMaxSize.x = DoubleToInt32(Math.Abs(rcWorkArea.right - rcWorkArea.left));
mmi.ptMaxSize.y = DoubleToInt32(Math.Abs(rcWorkArea.bottom - rcWorkArea.top));
// After much research, it appears that the MaxTrackSize is used for secondary monitors
// while MaxSize is used for the primary monitor.
mmi.ptMaxTrackSize.x = DoubleToInt32(Math.Abs(rcWorkArea.right - rcWorkArea.left));
mmi.ptMaxTrackSize.y = DoubleToInt32(Math.Abs(rcWorkArea.bottom - rcWorkArea.top));
mmi.ptMinTrackSize.x = GetMinWidthInScreenPixels(dpiScale);
mmi.ptMinTrackSize.y = GetMinHeightInScreenPixels(dpiScale);
}
Marshal.StructureToPtr(mmi, lParam, true);
}
private BitmapSource GetCapturedImage()
{
var rect = _areaSelection.GetSelectedArea();
// decide which monitor the selected area belongs to by checking the mid point of the selected area
var x = (rect.left + rect.width / 2);
var y = (rect.top + rect.height / 2);
var hMonitor = NativeMethods.MonitorFromPoint(new NativeMethods.POINT()
{
x = x, y = y
}, 0);
var curMon = _areaSelection.ScreenProps.GetMonitorInformation(hMonitor);
var monitorScalingX = curMon.dpiX / 96 / _screenScalor;
var monitorScalingY = curMon.dpiY / 96 / _screenScalor;
var dpiScaler = new DpiScale(monitorScalingX, monitorScalingY);
var capturedImage = _screenShotImage.GetCaptureImage(rect, dpiScaler);
// Copies to clipboard based on user setting
if (UserSettings.CopyToClipboardAfterSnip)
{
System.Windows.Clipboard.SetImage(capturedImage);
}
return(capturedImage);
}
private void RecalculateSystemScale()
{
DpiUtilities.GetSystemEffectiveDpi(out _systemDpiX, out _systemDpiY);
SystemScale = DpiUtilities.CalculateScale(_systemDpiX, _systemDpiY, 96, 96);
#if (DEBUG)
System.Diagnostics.Debug.WriteLine("System DPI = " + _systemDpiX.ToString());
#endif
}
/// <summary>
/// Detect if the tools are docked at the edge of the screen
/// </summary>
/// <param name="scale"></param>
/// <param name="screen"></param>
/// <returns></returns>
private DockState ToolsDockState(DpiScale scale, System.Windows.Forms.Screen screen)
{
if ((int)Math.Round(Top * scale.Y) <= screen.WorkingArea.Top)
{
return(DockState.Top);
}
else if ((int)Math.Round(Left * scale.X) <= screen.WorkingArea.Left)
{
return(DockState.Left);
}
else if ((int)Math.Round((Left + ActualWidth) * scale.X) >= screen.WorkingArea.Right)
{
return(DockState.Right);
}
else if ((int)Math.Round((Top + ActualHeight) * scale.Y) >= screen.WorkingArea.Bottom)
{
return(DockState.Bottom);
}
return(DockState.Middle);
}
private int GetMinHeightInScreenPixels(DpiScale dpiScale)
{
double value = double.IsNaN(VirtualMinHeight) ? SystemParameters.MinimumWindowHeight : VirtualMinHeight;
return(DoubleToInt32(value * dpiScale.Y));
}
private int GetMinWidthInScreenPixels(DpiScale dpiScale)
{
double value = double.IsNaN(VirtualMinWidth) ? SystemParameters.MinimumWindowWidth : VirtualMinWidth;
return(DoubleToInt32(value * dpiScale.X));
}
/// <summary>
/// Gets the working area in virtual pixels (Left, Top, Width, Height).
/// </summary>
/// <param name="window">The window.</param>
/// <returns></returns>
public static Tuple <double, double, double, double> GetWorkingAreaInVirtualPixels(Window window, DpiScale dpiScale)
{
var workingArea = GetWorkingArea(window);
return(new Tuple <double, double, double, double>(workingArea.Item1 / dpiScale.X,
workingArea.Item2 / dpiScale.Y,
workingArea.Item3 / dpiScale.X,
workingArea.Item4 / dpiScale.Y));
}
