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image/zoom: Allow levels smaller best-fit from menu

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Closes #437, #414
This commit is contained in:
Sophie Herold 2025-01-29 20:00:18 +01:00
parent c9e7f052e1
commit e25b9aead6
4 changed files with 38 additions and 16 deletions
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38
src/widgets/image/zoom.rs
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@ -50,7 +50,7 @@ impl imp::LpImage {
// Do not allow to zoom larger than original size
FitMode::BestFit => 1.,
// Allow arbitrary zoom
FitMode::LargeFit => f64::MAX,
FitMode::LargeFit | FitMode::ExactVolatile => f64::MAX,
};
let default_zoom = if texture_aspect_ratio > widget_aspect_ratio {
@ -138,7 +138,7 @@ impl imp::LpImage {
);
}
if zoom < self.zoom_level_best_fit() {
if zoom < self.zoom_level_best_fit() && obj.fit_mode() == FitMode::BestFit {
let minimum = self.zoom_level_best_fit();
let max_deviation = minimum / ZOOM_FACTOR_MAX_RUBBERBAND;
let deviation = zoom / minimum;
@ -222,7 +222,14 @@ impl imp::LpImage {
self.zoom_level_best_fit()
};
if zoom <= extended_best_fit_threshold {
// Reset fit mode if entering in the usual zoom levels again
if obj.fit_mode() == FitMode::ExactVolatile
&& zoom >= f64::min(1.0, self.zoom_level_best_fit())
{
obj.set_fit_mode(FitMode::BestFit)
}
if zoom <= extended_best_fit_threshold && obj.fit_mode() != FitMode::ExactVolatile {
zoom = self.zoom_level_best_fit();
obj.set_best_fit(true);
} else {
@ -290,6 +297,13 @@ impl imp::LpImage {
animation
})
}
pub fn set_fit_mode(&self, fit_mode: FitMode) {
self.fit_mode.replace(fit_mode);
if fit_mode != FitMode::ExactVolatile {
self.configure_best_fit();
}
}
}
impl LpImage {
@ -348,19 +362,19 @@ impl LpImage {
self.imp().zoom_to_full(zoom, true, false, false);
}
/// Same as `zoom_to_exact` but zoom to center
pub fn zoom_to_exact_center(&self, zoom: f64) {
pub fn zoom_to_no_best_fit(&self, zoom: f64) {
self.set_fit_mode(FitMode::ExactVolatile);
self.set_best_fit(false);
self.imp().zoom_to_full(zoom, true, false, false);
}
pub fn zoom_to_center_no_best_fit(&self, zoom: f64) {
self.set_fit_mode(FitMode::ExactVolatile);
self.set_best_fit(false);
self.imp().zoom_to_full(zoom, true, false, true);
}
pub fn is_best_fit(&self) -> bool {
self.imp().best_fit.get()
}
pub fn set_fit_mode(&self, fit_mode: FitMode) {
let imp = self.imp();
imp.fit_mode.replace(fit_mode);
imp.configure_best_fit();
}
}