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Improve scrollbar behavior (#351)

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* Change scrollbar behavior

* Leave space at the end of the scrollbar

* Change mid to center

* Use shorter array initialization

* Add space around scrollbar

* Fix scrollbar spacing

* Smooth end of scrollbars

* Add page up and down

* Page up and down on click in scrollbar track

* Add shift pageup to translate horizontally
This commit is contained in:
0HyperCube
2021-08-16 21:25:00 +01:00
committed by Keavon Chambers
parent f63b0abfde
commit 6deecad9c0
10 changed files with 63 additions and 14 deletions
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21
editor/src/document/document_file.rs
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@@ -1,6 +1,6 @@
pub use super::layer_panel::*;
use crate::{
consts::{FILE_EXPORT_SUFFIX, FILE_SAVE_SUFFIX},
consts::{ASYMPTOTIC_EFFECT, FILE_EXPORT_SUFFIX, FILE_SAVE_SUFFIX, SCALE_EFFECT, SCROLLBAR_SPACING},
frontend::layer_panel::*,
EditorError,
};
@@ -406,15 +406,16 @@ impl MessageHandler<DocumentMessage, &InputPreprocessor> for DocumentMessageHand
}
.into(),
);
let root = self.layerdata(&[]);
let viewport = ipp.viewport_bounds.size();
let [bounds1, bounds2] = self.document.visible_layers_bounding_box().unwrap_or_default();
let bounds1 = bounds1.min(DVec2::ZERO) - viewport * (f64::powf(2., root.scale / 3.) * 0.5);
let bounds2 = bounds2.max(viewport) + viewport * (f64::powf(2., root.scale / 3.) * 0.5);
let bounds_length = bounds2 - bounds1;
let scrollbar_multiplier = bounds_length - viewport;
let scrollbar_position = bounds1.abs() / scrollbar_multiplier;
let scrollbar_size = viewport / bounds_length;
let scale = 0.5 + ASYMPTOTIC_EFFECT + self.layerdata(&[]).scale * SCALE_EFFECT;
let viewport_size = ipp.viewport_bounds.size();
let viewport_mid = ipp.viewport_bounds.center();
let [bounds1, bounds2] = self.document.visible_layers_bounding_box().unwrap_or([viewport_mid; 2]);
let bounds1 = bounds1.min(viewport_mid) - viewport_size * scale;
let bounds2 = bounds2.max(viewport_mid) + viewport_size * scale;
let bounds_length = (bounds2 - bounds1) * (1. + SCROLLBAR_SPACING);
let scrollbar_position = DVec2::splat(0.5) - (bounds1.lerp(bounds2, 0.5) - viewport_mid) / (bounds_length - viewport_size);
let scrollbar_multiplier = bounds_length - viewport_size;
let scrollbar_size = viewport_size / bounds_length;
responses.push_back(
FrontendMessage::UpdateScrollbars {
position: scrollbar_position.into(),