DpiHelper.DpiHelperImplementation Class

Initializes a new instance of DpiHelperImplementation.

The default logical DPI.

Retuns the BitmapScalingMode algorithm to be used for resizing images in WPF. This allows the shell to control the algorithm depending on the DPI zoom scale, and allows the user to override it via registry settings like General\BitmapScalingXXX = (BitmapScalingMode)value, with XXX the zoom factor in percents, e.g. BitmapScaling150, etc. Note that for WPF scaling, there is an additional registry value that applies for zoom factors > 200%, UseBitmapPreScalingXXX

The screen's (device) current horizontal DPI

The screen's (device) current vertical DPI

Converts to the horizontal logical units scaling factor.

Converts to the vertical logical units scaling factor.

Retuns the ImageScalingMode algorithm to be used for resizing images in WinForms/Win32. This allows the shell to control the algorithm depending on the DPI zoom scale, and allows the user to override it via registry settings like General\ImageScalingXXX = (ImageScalingMode)value, with XXX the zoom factor in percents, e.g. ImageScaling150, etc.

Returns whether scaling is required when converting between logical-device units

The helper's logical horizontal DPI

The helper's logical vertical DPI

Return the horizontal scale value that should be used with a LayoutTransform/ScaleTransform to scale back an image pre-scaled in HighDPI with DpiPrescaleImageSourceConverter in order to obtain crisp results

Return the vertical scale value that should be used with a LayoutTransform/ScaleTransform to scale back an image pre-scaled in HighDPI with DpiPrescaleImageSourceConverter in order to obtain crisp results

Returns whether images should be pre-scaled at zoom levels higher than 200%, using NearestNeighbor up to the largest multiple of 100%

Creates and returns a new bitmap strip from the logical System.Drawing.Bitmap scaled for the device units When displayed on the device, the scaled image strip will have same size as the original image strip would have when displayed at 96dpi.

This should be used for converting imagelists bitmap strips instead of simply scaling the bitmap, because the resultant bitmap strip size may be different from just upscaling as bitmap N * Math.Round(width * dpiscale) != Math.Round(N * width * dpiscale) This may happen depending on the image width because dpiscale is a double not an int.

Creates and returns a new bitmap strip from the logical System.Drawing.Bitmap strip scaled for the device units, using NearestNeighbor interpolation. When displayed on the device, the scaled image strip will have same size as the original image strip would have when displayed at 96dpi.

This should be used for converting imagelists bitmap strips instead of simply scaling the bitmap, because the resultant bitmap strip size may be different from just upscaling as bitmap N * Math.Round(width * dpiscale) != Math.Round(N * width * dpiscale) This may happen depending on the image width because dpiscale is a double not an int.

Creates and returns a new icon scaled for the device units. When displayed on the device, the scaled icon will have same size as the original icon would have when displayed at 96dpi.

Creates and returns a new bitmap or metafile from the logical System.Drawing.Image scaled for the device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Creates and returns a new bitmap or metafile from the logical System.Drawing.Image scaled for the device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Creates and returns a new imagelist scaled for the device units When displayed on the device, the scaled imagelist will have same size as the original imagelist would have when displayed at 96dpi.

Creates and returns a new imagelist scaled for the device units When displayed on the device, the scaled imagelist will have same size as the original imagelist would have when displayed at 96dpi.

Returns a new Point with the input's coordinates converted from device units to logical units.

Returns a new Rect with the input's coordinates converted from device units to logical units.

Returns a new Size with the input's dimensions converted from device units to logical units.

Returns a new Thickness with the input's dimensions converted from device units to logical units.

Transforms a horizontal coordinate from device to logical units

Transforms a horizontal integer coordinate from device to logical units

Transforms a horizontal coordinate from device to logical units

Transforms a vertical coordinate from device to logical units

Transforms a vertical integer coordinate from device to logical units

Transforms a vertical coordinate from device to logical units

Gets the bitmap scaling mode override.

Get the FrameworkElement's Size in device units

Gets the window's Height in device units

Gets the window's Left coordinate in device units

Gets the window's Rectangle in device units

Gets the window's Top coordinate in device units

Gets the window's Width in device units

Gets the image scaling mode override.

Determines whether prescaled images should be used.

Converts (if necessary) the image by scaling it to device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Converts (if necessary) the image by scaling it to device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Converts (if necessary) the image strip to device units, using NearestNeighbor interpolation.. When displayed on the device, the scaled image strip will have same size as the original image strip would have when displayed at 96dpi.

This should be used for converting imagelists bitmap strips instead of simply scaling the bitmap, because the resultant bitmap strip size may be different from just upscaling as bitmap N * Math.Round(width * dpiscale) != Math.Round(N * width * dpiscale) This may happen depending on the image width because dpiscale is a double not an int.

Converts (if necessary) the image strip to device units, using NearestNeighbor interpolation.. When displayed on the device, the scaled image strip will have same size as the original image strip would have when displayed at 96dpi.

This should be used for converting imagelists bitmap strips instead of simply scaling the bitmap, because the resultant bitmap strip size may be different from just upscaling as bitmap N * Math.Round(width * dpiscale) != Math.Round(N * width * dpiscale) This may happen depending on the image width because dpiscale is a double not an int.

Converts (if necessary) the icon by scaling it to device units. When displayed on the device, the scaled icon will have same size as the original icon would have when displayed at 96dpi.

Converts (if necessary) the image by scaling it to device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Converts (if necessary) the image by scaling it to device units. When displayed on the device, the scaled image will have same size as the original image would have when displayed at 96dpi.

Converts (if necessary) the imagelist by scaling it to device units. When displayed on the device, the scaled imagelist will have same size as the original imagelist would have when displayed at 96dpi.

Converts (if necessary) the imagelist by scaling it to device units. When displayed on the device, the scaled imagelist will have same size as the original imagelist would have when displayed at 96dpi.

Returns a new Point with the input's coordinates converted from logical units to device units.

Returns a new System.Drawing.Point with the input's coordinates converted from logical units to device units.

Returns a new System.Drawing.PointF with the input's coordinates converted from logical units to device units.

Returns a new Rect with the input's coordinates converted from logical units to device units.

Returns a new System.Drawing.Rectangle with the input's coordinates converted from logical units to device units.

Returns a new System.Drawing.RectangleF with the input's coordinates converted from logical units to device units.

Returns a new System.Drawing.Size with the input's coordinates converted from logical units to device units.

Returns a new Size with the input's dimensions converted from logical units to device units.

Returns a new System.Drawing.SizeF with the input's coordinates converted from logical units to device units.

Returns a new Thickness with the input's dimensions converted from logical units to device units.

Transforms a horizontal coordinate from logical to device units

Transforms a horizontal integer coordinate from logical to device units by scaling it up for current DPI and rounding to nearest integer value

Transforms a horizontal coordinate from logical to device units

Transforms a vertical coordinate from logical to device units

Transforms a vertical integer coordinate from logical to device units by scaling it up for current DPI and rounding to nearest integer value

Transforms a vertical coordinate from logical to device units

Returns the closest value in logical units that will be converted to an integer value if it is converted back to device units using functions for horizontal coordinates/widths such as DeviceToLogicalUnitsX.

Returns the closest value in logical units that will be converted to an integer value if it is converted back to device units using functions for vertical coordinates/widths such as DeviceToLogicalUnitsY.

Scale a WPF image to the indicated size, using the specified scalingMode

Sets the window's Height using device units

Sets the window's Left coordinate using device units

Sets the window's Top coordinate using device units

Sets the window's Width using device units