display

package
v0.1.0 Latest Latest
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 Go to latest Published: Mar 18, 2026 License: GPL-3.0 Imports: 2 Imported by: 0

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Constants

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Variables

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Functions

func DPIScale 

func DPIScale() float64

DPIScale returns the device scale factor for the current monitor. Returns 1.0 if the monitor is not available (e.g. in test environments).

func ScaleAndCenter 

func ScaleAndCenter(displayW, displayH, sourceW, sourceH float64, screenW, screenH int) (scaleX, scaleY, offsetX, offsetY float64)

ScaleAndCenter computes scale factors and centering offsets to fit a display-sized image (displayW x displayH) from a source (sourceW x sourceH) into the screen (screenW x screenH).

func Size 

func Size(mode string, screenW, screenH, sourceW, sourceH int, par float64) (float64, float64)

Size computes the display dimensions for the given aspect ratio mode, fitting within screenW x screenH while preserving the chosen ratio. sourceW/sourceH are the native pixel dimensions and par is the pixel aspect ratio (used only for "dar" mode).

Types

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