26 lines
1.0 KiB
Go
26 lines
1.0 KiB
Go
// Package display exposes platform-specific helpers for reading the
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// geometry of the primary display, in both CSS (logical) and PHYSICAL
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// pixels. The overlay flow needs both: CSS pixels to size the Wails window
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// to "fullscreen" (since Wails uses CSS-px-equivalent units), and the
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// backing scale factor to translate the user's CSS-px selection rectangle
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// into the physical-pixel rectangle of the captured PNG.
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package display
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// Info describes the primary display.
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//
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// The struct is deliberately minimal: only the few fields the overlay flow
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// actually needs. We can grow it later without affecting callers because
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// it is returned by value.
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type Info struct {
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// CSSWidth / CSSHeight are the logical dimensions of the primary
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// display in points (i.e. what CSS / Wails uses).
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CSSWidth int
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CSSHeight int
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// Scale is backing factor (CSS-px → device-px). 2 on Retina, 1 on
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// non-Retina. We model it as float64 to leave room for fractional
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// scales (e.g. Linux 1.25×) even though macOS effectively only ever
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// reports 1 or 2.
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Scale float64
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}
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