1182b7b55d
- Implement PDF and PDF thumbnail generation with incremental loading - Add UI refresh mechanism (tick counter + RefreshView message) - Improve fl! macro with named parameters - Clean up code organization (mod.rs: wiring, model.rs: state only)
71 lines
2.2 KiB
Rust
71 lines
2.2 KiB
Rust
// SPDX-License-Identifier: GPL-3.0-or-later
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// src/app/document/raster.rs
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use std::path::Path;
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use image::{imageops, DynamicImage, GenericImageView, ImageReader};
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use super::ImageHandle;
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/// Represents a raster image document (PNG, JPEG, WebP, ...).
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pub struct RasterDocument {
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/// The decoded image document.
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document: DynamicImage,
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/// Cached handle for rendering.
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pub handle: ImageHandle,
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}
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impl RasterDocument {
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/// Load a raster document from disk.
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pub fn open(path: &Path) -> image::ImageResult<Self> {
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let document = ImageReader::open(path)?.decode()?;
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let handle = super::create_image_handle(&document);
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Ok(Self { document, handle })
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}
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/// Rebuild the handle after mutating `document`.
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pub fn refresh_handle(&mut self) {
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self.handle = super::create_image_handle(&self.document);
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}
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/// Returns the native pixel dimensions (width, height).
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pub fn dimensions(&self) -> (u32, u32) {
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self.document.dimensions()
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}
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/// Save the current document to disk.
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pub fn save(&self, path: &Path) -> image::ImageResult<()> {
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self.document.save(path)
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}
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/// Extract metadata for this raster document.
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pub fn extract_meta(&self, path: &Path) -> super::meta::DocumentMeta {
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let (width, height) = self.dimensions();
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super::meta::build_raster_meta(path, &self.document, width, height)
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}
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/// Rotate 90 degrees clockwise.
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pub fn rotate_cw(&mut self) {
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self.document = DynamicImage::ImageRgba8(imageops::rotate90(&self.document));
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self.refresh_handle();
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}
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/// Rotate 90 degrees counter-clockwise.
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pub fn rotate_ccw(&mut self) {
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self.document = DynamicImage::ImageRgba8(imageops::rotate270(&self.document));
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self.refresh_handle();
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}
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/// Flip horizontally.
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pub fn flip_horizontal(&mut self) {
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self.document = DynamicImage::ImageRgba8(imageops::flip_horizontal(&self.document));
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self.refresh_handle();
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}
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/// Flip vertically.
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pub fn flip_vertical(&mut self) {
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self.document = DynamicImage::ImageRgba8(imageops::flip_vertical(&self.document));
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self.refresh_handle();
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}
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}
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