Brooklyn Nicholson
e60983a697
Composer drag added renderer CSS-pixel deltas onto a window AppKit clamps to the current display, so the bar could not follow the cursor onto a second monitor (and drifted on mixed-DPI Windows). Track the OS cursor in main and lift that clamp. Co-authored-by: Biotrioo <biotrioo@protonmail.com>
38 lines
990 B
TypeScript
38 lines
990 B
TypeScript
/**
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* HUD composer-drag geometry — where to park the window so it stays under the
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* OS cursor, including across monitors.
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*
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* Renderer PointerEvent screen coordinates are CSS pixels. Electron's
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* `screen.getCursorScreenPoint()` and `BrowserWindow` bounds are DIP. An
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* absolute grab offset sampled in main stays 1:1 across mixed-DPI displays,
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* even if the last setBounds was clamped to the previous monitor.
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*/
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export interface HudDragPoint {
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x: number
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y: number
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}
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export function createHudDragSession() {
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let offset: HudDragPoint | null = null
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return {
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begin(cursor: HudDragPoint, windowOrigin: HudDragPoint) {
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offset = { x: cursor.x - windowOrigin.x, y: cursor.y - windowOrigin.y }
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},
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origin(cursor: HudDragPoint): HudDragPoint | null {
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if (!offset) {
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return null
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}
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return {
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x: Math.round(cursor.x - offset.x),
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y: Math.round(cursor.y - offset.y)
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}
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},
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end() {
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offset = null
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}
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}
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}
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