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Improve document zooming to work based on nice steps (#336)

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* Improve document zooming to work based on nice steps

* Code review improvements
This commit is contained in:
Keavon Chambers
2021-08-10 16:21:18 -07:00
parent 1ee94f41f0
commit a570ff22e8
9 changed files with 97 additions and 45 deletions
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26
editor/src/document/movement_handler.rs
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@@ -4,7 +4,7 @@ use super::LayerData;
use crate::message_prelude::*;
use crate::{
consts::{MOUSE_ZOOM_RATE, VIEWPORT_SCROLL_RATE, VIEWPORT_ZOOM_SCALE_MAX, VIEWPORT_ZOOM_SCALE_MIN, WHEEL_ZOOM_RATE},
consts::{VIEWPORT_SCROLL_RATE, VIEWPORT_ZOOM_LEVELS, VIEWPORT_ZOOM_MOUSE_RATE, VIEWPORT_ZOOM_SCALE_MAX, VIEWPORT_ZOOM_SCALE_MIN, VIEWPORT_ZOOM_WHEEL_RATE},
input::{mouse::ViewportPosition, InputPreprocessor},
};
use glam::DVec2;
@@ -24,10 +24,11 @@ pub enum MovementMessage {
DisableSnapping,
ZoomCanvasBegin,
TranslateCanvasEnd,
SetCanvasZoom(f64),
MultiplyCanvasZoom(f64),
WheelCanvasZoom,
SetCanvasRotation(f64),
SetCanvasZoom(f64),
IncreaseCanvasZoom,
DecreaseCanvasZoom,
WheelCanvasZoom,
ZoomCanvasToFitAll,
}
@@ -113,7 +114,7 @@ impl MessageHandler<MovementMessage, (&mut LayerData, &Document, &InputPreproces
}
if self.zooming {
let difference = self.mouse_pos.y as f64 - ipp.mouse.position.y as f64;
let amount = 1. + difference * MOUSE_ZOOM_RATE;
let amount = 1. + difference * VIEWPORT_ZOOM_MOUSE_RATE;
let new = (layerdata.scale * amount).clamp(VIEWPORT_ZOOM_SCALE_MIN, VIEWPORT_ZOOM_SCALE_MAX);
layerdata.scale = new;
@@ -127,9 +128,13 @@ impl MessageHandler<MovementMessage, (&mut LayerData, &Document, &InputPreproces
responses.push_back(FrontendMessage::SetCanvasZoom { new_zoom: layerdata.scale }.into());
self.create_document_transform_from_layerdata(layerdata, &ipp.viewport_size, responses);
}
MultiplyCanvasZoom(multiplier) => {
let new = (layerdata.scale * multiplier).clamp(VIEWPORT_ZOOM_SCALE_MIN, VIEWPORT_ZOOM_SCALE_MAX);
layerdata.scale = new;
IncreaseCanvasZoom => {
layerdata.scale = *VIEWPORT_ZOOM_LEVELS.iter().find(|scale| **scale > layerdata.scale).unwrap_or(&layerdata.scale);
responses.push_back(FrontendMessage::SetCanvasZoom { new_zoom: layerdata.scale }.into());
self.create_document_transform_from_layerdata(layerdata, &ipp.viewport_size, responses);
}
DecreaseCanvasZoom => {
layerdata.scale = *VIEWPORT_ZOOM_LEVELS.iter().rev().find(|scale| **scale < layerdata.scale).unwrap_or(&layerdata.scale);
responses.push_back(FrontendMessage::SetCanvasZoom { new_zoom: layerdata.scale }.into());
self.create_document_transform_from_layerdata(layerdata, &ipp.viewport_size, responses);
}
@@ -137,7 +142,7 @@ impl MessageHandler<MovementMessage, (&mut LayerData, &Document, &InputPreproces
let scroll = ipp.mouse.scroll_delta.scroll_delta();
let mouse = ipp.mouse.position.as_f64();
let viewport_size = ipp.viewport_size.as_f64();
let mut zoom_factor = 1. + scroll.abs() * WHEEL_ZOOM_RATE;
let mut zoom_factor = 1. + scroll.abs() * VIEWPORT_ZOOM_WHEEL_RATE;
if ipp.mouse.scroll_delta.y > 0 {
zoom_factor = 1. / zoom_factor
};
@@ -195,9 +200,10 @@ impl MessageHandler<MovementMessage, (&mut LayerData, &Document, &InputPreproces
RotateCanvasBegin,
ZoomCanvasBegin,
SetCanvasZoom,
MultiplyCanvasZoom,
SetCanvasRotation,
WheelCanvasZoom,
IncreaseCanvasZoom,
DecreaseCanvasZoom,
WheelCanvasTranslate,
ZoomCanvasToFitAll,
);