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)
56 lines
1.9 KiB
Rust
56 lines
1.9 KiB
Rust
// SPDX-License-Identifier: GPL-3.0-or-later
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// src/app/view/canvas.rs
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//
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// Render the center canvas area with the current document.
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use cosmic::iced::{ContentFit, Length};
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use cosmic::widget::{container, text};
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use cosmic::Element;
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use super::image_viewer::Viewer;
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use crate::app::model::ViewMode;
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use crate::app::{AppMessage, AppModel};
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use crate::config::AppConfig;
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use crate::fl;
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/// Render the center canvas area with the current document.
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pub fn view<'a>(model: &'a AppModel, config: &'a AppConfig) -> Element<'a, AppMessage> {
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if let Some(doc) = &model.document {
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let handle = doc.handle();
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// Determine zoom scale and content fit based on view mode
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let (scale, content_fit) = match model.view_mode {
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ViewMode::Fit => (1.0, ContentFit::Contain),
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ViewMode::ActualSize => (1.0, ContentFit::None),
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ViewMode::Custom(z) => (z, ContentFit::None),
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};
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// Use our forked viewer with external state control
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// scale_step is (scale_step - 1.0) because viewer uses additive step
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let img_viewer = Viewer::new(handle)
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.with_state(scale, model.pan_x, model.pan_y)
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.on_state_change(|scale, offset_x, offset_y| AppMessage::ViewerStateChanged {
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scale,
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offset_x,
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offset_y,
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})
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.width(Length::Fill)
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.height(Length::Fill)
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.content_fit(content_fit)
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.min_scale(config.min_scale)
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.max_scale(config.max_scale)
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.scale_step(config.scale_step - 1.0);
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container(img_viewer)
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.width(Length::Fill)
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.height(Length::Fill)
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.into()
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} else {
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// Placeholder when no document is loaded
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container(text(fl!("no-document")))
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.width(Length::Fill)
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.height(Length::Fill)
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.center(Length::Fill)
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.into()
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}
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}
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