66 lines
2.3 KiB
Rust
66 lines
2.3 KiB
Rust
// SPDX-License-Identifier: GPL-3.0-or-later
|
|
// src/app/view/canvas.rs
|
|
//
|
|
// Renders the center canvas area with the current document.
|
|
|
|
use cosmic::iced::{Alignment, Length};
|
|
use cosmic::widget::{container, image, text, Column, Row};
|
|
use cosmic::Element;
|
|
|
|
use crate::app::model::ViewMode;
|
|
use crate::app::{AppMessage, AppModel};
|
|
use crate::fl;
|
|
|
|
/// Render the center canvas area with the current document.
|
|
pub fn view(model: &AppModel) -> Element<'_, AppMessage> {
|
|
if let Some(doc) = &model.document {
|
|
let handle = doc.handle();
|
|
|
|
let img_widget = match &model.view_mode {
|
|
ViewMode::Fit => {
|
|
// Fit mode: image scales to fill container while preserving aspect ratio.
|
|
image::Image::new(handle)
|
|
.width(Length::Fill)
|
|
.height(Length::Fill)
|
|
}
|
|
ViewMode::ActualSize => {
|
|
// 1:1 pixel size.
|
|
let (native_w, native_h) = doc.dimensions();
|
|
image::Image::new(handle)
|
|
.width(Length::Fixed(native_w as f32))
|
|
.height(Length::Fixed(native_h as f32))
|
|
}
|
|
ViewMode::Custom(zoom) => {
|
|
// Custom zoom factor applied to native size.
|
|
let (native_w, native_h) = doc.dimensions();
|
|
let scaled_w = (native_w as f32 * zoom).round();
|
|
let scaled_h = (native_h as f32 * zoom).round();
|
|
image::Image::new(handle)
|
|
.width(Length::Fixed(scaled_w))
|
|
.height(Length::Fixed(scaled_h))
|
|
}
|
|
};
|
|
|
|
// Center the image both horizontally and vertically.
|
|
Column::new()
|
|
.width(Length::Fill)
|
|
.height(Length::Fill)
|
|
.align_x(Alignment::Center)
|
|
.push(
|
|
Row::new()
|
|
.push(img_widget)
|
|
.width(Length::Fill)
|
|
.height(Length::Fill)
|
|
.align_y(Alignment::Center),
|
|
)
|
|
.into()
|
|
} else {
|
|
// No document loaded placeholder.
|
|
container(text(fl!("no-document")))
|
|
.center_x(Length::Fill)
|
|
.center_y(Length::Fill)
|
|
.width(Length::Fill)
|
|
.height(Length::Fill)
|
|
.into()
|
|
}
|
|
}
|