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Fix Vizia resize handle for HiDPI windows

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This commit is contained in:
Robbert van der Helm 2022-09-22 19:48:08 +02:00
parent d3fe4c0d06
commit 21078bcae0
1 changed files with 7 additions and 2 deletions
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9
nih_plug_vizia/src/widgets/resize_handle.rs
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@ -13,6 +13,9 @@ pub struct ResizeHandle {
/// The scale factor when we started dragging. This is kept track of separately to avoid
/// accumulating rounding errors.
start_scale_factor: f64,
/// The DPI factor when we started dragging, includes both the HiDPI scaling and the user
/// scaling factor. This is kept track of separately to avoid accumulating rounding errors.
start_dpi_factor: f64,
/// The cursor position in physical screen pixels when the drag started.
start_physical_coordinates: (f32, f32),
}
@ -25,6 +28,7 @@ impl ResizeHandle {
ResizeHandle {
drag_active: false,
start_scale_factor: 1.0,
start_dpi_factor: 1.0,
start_physical_coordinates: (0.0, 0.0),
}
.build(cx, |_| {})
@ -50,6 +54,7 @@ impl View for ResizeHandle {
self.drag_active = true;
self.start_scale_factor = cx.user_scale_factor();
self.start_dpi_factor = cx.style().dpi_factor;
self.start_physical_coordinates = (
cx.mouse().cursorx * cx.style().dpi_factor as f32,
cx.mouse().cursory * cx.style().dpi_factor as f32,
@ -82,8 +87,8 @@ impl View for ResizeHandle {
// TODO: This may start doing fun things when the window grows so large that it
// gets pushed upwards or leftwards
let (compensated_physical_x, compensated_physical_y) = (
x * self.start_scale_factor as f32,
y * self.start_scale_factor as f32,
x * self.start_dpi_factor as f32,
y * self.start_dpi_factor as f32,
);
let (start_physical_x, start_physical_y) = self.start_physical_coordinates;
let new_scale_factor = (self.start_scale_factor