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print: Use LpImage for preview

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This commit is contained in:
Sophie Herold 2023-12-25 20:18:26 +01:00
parent e387d8dc66
commit 6827a9c176
9 changed files with 143 additions and 44 deletions
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20
src/widgets/image/zoom.rs
View file

@ -49,16 +49,23 @@ impl LpImage {
let texture_aspect_ratio = image_width / image_height;
let widget_aspect_ratio = self.width() as f64 / self.height() as f64;
let max_zoom_factor = match self.imp().fit_mode.get() {
// Do not allow to zoom larger than original size
FitMode::BestFit => 1.,
// Allow arbitrary zoom
FitMode::LargeFit => f64::MAX,
};
let default_zoom = if texture_aspect_ratio > widget_aspect_ratio {
(self.width() as f64 / image_width).min(1.)
(self.width() as f64 / image_width).min(max_zoom_factor)
} else {
(self.height() as f64 / image_height).min(1.)
(self.height() as f64 / image_height).min(max_zoom_factor)
};
let rotated_zoom = if 1. / texture_aspect_ratio > widget_aspect_ratio {
(self.width() as f64 / image_height).min(1.)
(self.width() as f64 / image_height).min(max_zoom_factor)
} else {
(self.height() as f64 / image_width).min(1.)
(self.height() as f64 / image_width).min(max_zoom_factor)
};
rotated * rotated_zoom + (1. - rotated) * default_zoom
@ -80,6 +87,11 @@ impl LpImage {
self.imp().best_fit.get()
}
pub fn set_fit_mode(&self, fit_mode: FitMode) {
self.imp().fit_mode.replace(fit_mode);
self.configure_best_fit();
}
pub(super) fn applicable_zoom(&self) -> f64 {
decoder::tiling::zoom_normalize(self.zoom()) / self.scaling()
}