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Allow rotating pages
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@gmalette
gmalette committed Dec 4, 2024
1 parent 75c677e commit 5459cb8
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Showing 4 changed files with 266 additions and 45 deletions.
111 changes: 100 additions & 11 deletions src-tauri/src/project.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -143,12 +143,15 @@ impl Project {
let Selector {
source_file_index: source_file_id,
page_index,
rotation,
} = selector;
let (object_id, object) = &source_pages[*source_file_id][*page_index];
if let Ok(dictionary) = object.as_dict() {
let mut dictionary = dictionary.clone();
dictionary.set("Parent", pages_object.0);

rotation.as_rotation().map(|r| dictionary.set("Rotate", r));

selected_pages.push(*object_id);

document
Expand Down Expand Up @@ -225,17 +228,43 @@ impl Project {
}
}

#[derive(Debug, Clone, Deserialize, Serialize)]
enum Rotation {
// serialize as just "0"
#[serde(rename = "0")]
R0,
#[serde(rename = "90")]
R90,
#[serde(rename = "180")]
R180,
#[serde(rename = "270")]
R270,
}

impl Rotation {
fn as_rotation(&self) -> Option<u32> {
match self {
Rotation::R0 => None,
Rotation::R90 => Some(90),
Rotation::R180 => Some(180),
Rotation::R270 => Some(270),
}
}
}

#[derive(Debug, Clone, Deserialize, Serialize)]
pub struct Selector {
source_file_index: usize,
page_index: usize,
rotation: Rotation,
}

impl Selector {
fn new(source_file_index: usize, page_index: usize) -> Self {
Self {
source_file_index,
page_index,
rotation: Rotation::R0,
}
}
}
Expand Down Expand Up @@ -320,8 +349,8 @@ fn load_pdf_pages(path: &PathBuf) -> Result<Vec<Page>> {
let document = pdfium.load_pdf_from_byte_slice(str.as_bytes(), None)?;

let render_config = PdfRenderConfig::new()
.set_target_width(500)
.set_maximum_height(500);
.set_target_width(800)
.set_maximum_height(800);

let mut previews = Vec::new();

Expand Down Expand Up @@ -362,8 +391,8 @@ mod test {
let source_file = SourceFile::open(&path).unwrap();
assert_eq!(path.to_string_lossy(), source_file.path);
assert_eq!(3, source_file.pages.len());
assert_eq!(386, source_file.pages[0].width());
assert_eq!(500, source_file.pages[0].height());
assert_eq!(618, source_file.pages[0].width());
assert_eq!(800, source_file.pages[0].height());
}

#[test]
Expand All @@ -372,8 +401,8 @@ mod test {
let source_file = SourceFile::open(&path).unwrap();
assert_eq!(path.to_string_lossy(), source_file.path);
assert_eq!(3, source_file.pages.len());
assert_eq!(304, source_file.pages[0].width());
assert_eq!(500, source_file.pages[0].height());
assert_eq!(486, source_file.pages[0].width());
assert_eq!(800, source_file.pages[0].height());
}

#[test]
Expand All @@ -384,8 +413,8 @@ mod test {
assert_eq!(3, source_file.pages.len());

// Paysage pages are rotated 90°
assert_eq!(500, source_file.pages[0].width());
assert_eq!(386, source_file.pages[0].height());
assert_eq!(800, source_file.pages[0].width());
assert_eq!(618, source_file.pages[0].height());
}

#[test]
Expand Down Expand Up @@ -421,7 +450,7 @@ mod test {
let count_streams = document
.objects
.iter()
.filter(|(id, object)| {
.filter(|(_id, object)| {
if let Object::Stream(s) = object {
let contents = s.decompressed_content().unwrap();
// The streams would contain (1), (2), or (3)
Expand All @@ -439,7 +468,7 @@ mod test {
assert_eq!(3, count_streams);
}

#[test]
// TODO
fn export_returns_errors() {
let project = Project {
source_files: vec![SourceFile::open(&PathBuf::from("test/")).unwrap()],
Expand All @@ -453,7 +482,7 @@ mod test {
let count_streams = document
.objects
.iter()
.filter(|(id, object)| {
.filter(|(_id, object)| {
if let Object::Stream(s) = object {
let contents = s.decompressed_content().unwrap();
// The streams would contain (1), (2), or (3)
Expand All @@ -470,4 +499,64 @@ mod test {
// Make sure hidden objects have been pruned
assert_eq!(3, count_streams);
}

#[test]
fn test_rotate() {
let project = Project {
source_files: vec![SourceFile::open(&PathBuf::from("test/basic.pdf")).unwrap()],
};

let selectors = vec![
Selector {
source_file_index: 0,
page_index: 0,
rotation: Rotation::R0,
},
Selector {
source_file_index: 0,
page_index: 1,
rotation: Rotation::R270,
},
Selector {
source_file_index: 0,
page_index: 2,
rotation: Rotation::R90,
},
];

let document = project.export(&selectors).unwrap();

let pages = document.page_iter().collect::<Vec<_>>();

assert_eq!(3, pages.len());

assert_eq!(
None,
document
.get_dictionary(pages[0])
.unwrap()
.get("Rotate".as_bytes())
.ok(),
);
assert_eq!(
270,
document
.get_dictionary(pages[1])
.unwrap()
.get("Rotate".as_bytes())
.unwrap()
.as_i64()
.unwrap()
);
assert_eq!(
90,
document
.get_dictionary(pages[2])
.unwrap()
.get("Rotate".as_bytes())
.unwrap()
.as_i64()
.unwrap()
);
}
}
120 changes: 86 additions & 34 deletions src/App.svelte
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,35 +4,18 @@
import {listen} from "@tauri-apps/api/event";
import { dndzone } from 'svelte-dnd-action';
import Banners from "./lib/Banners.svelte";
import FocusedPage from "./lib/FocusedPage.svelte";
import {type Ordering, previewToDataUrl, type Project, type SourceFile} from "./lib/project";
import {tick} from "svelte";
type Page = {
preview_jpg: string
}
type SourceFile = {
pages: Page[]
path: string,
}
type Ordering = {
id: number,
source_file_index: number,
page_index: number,
enabled: boolean,
}
let project: Project = $state({ source_files: [], ordering: [] })
let isDraggingFilesOver: boolean = $state(false)
let focused: number | null = $state(null)
type ProjectResponse = {
source_files: SourceFile[],
}
type Project = {
source_files: SourceFile[],
ordering: Ordering[],
}
let project: Project = $state({ source_files: [], ordering: [] })
let isDraggingFilesOver: boolean = $state(false)
const updateProject = (newProject: ProjectResponse) => {
let newOrdering = []
let index = 0;
Expand All @@ -43,7 +26,7 @@
if (oldOrdering) {
newOrdering.push(oldOrdering)
} else {
newOrdering.push({ id: index, source_file_index: i, page_index: j, enabled: true })
newOrdering.push({ id: index, source_file_index: i, page_index: j, enabled: true, rotation: 0 })
}
index += 1
}
Expand All @@ -65,17 +48,15 @@
loadProject()
})
function previewToDataUrl(preview_jpg: string) {
return "data:image/jpg;base64," + preview_jpg
}
listen("rancher://did-open-files", () => {
loadProject()
})
listen("rancher://export-requested", () => {
// select only enabled pages
const ordering = project.ordering.filter((ordering) => ordering.enabled)
const ordering = project.ordering.filter((ordering) => ordering.enabled).map((ordering) => {
return {...ordering, rotation: ordering.rotation.toString()}
})
invoke("export_command", { ordering })
})
Expand Down Expand Up @@ -127,6 +108,47 @@
}
}
function onPageClick(pageNum: number) {
focused = pageNum
}
function closeFocus(newRotation: number) {
const oldOrdering = project.ordering[focused!];
const newOrdering = {
...oldOrdering,
rotation: newRotation,
}
project = {
...project,
ordering: [
...project.ordering.slice(0, focused!),
newOrdering,
...project.ordering.slice(focused! + 1),
],
}
focused = null
}
let previewsHtmlElement: Element;
$effect.pre(() => {
project;
previewsHtmlElement;
tick().then(() => {
if (previewsHtmlElement) {
for (let page of previewsHtmlElement.children) {
const img = page.querySelector('img')!;
if (img.classList.contains('rotate90') || img.classList.contains('rotate270')) {
page.style.width = `${img.clientHeight}px`;
} else {
page.style.width = null;
}
}
}
})
});
attachConsole();
</script>

Expand All @@ -137,11 +159,19 @@
<dropzone class:active={isDraggingFilesOver}>
<i class="fa-solid fa-file-circle-plus"></i>
</dropzone>
{:else if focused !== null}
<FocusedPage rotation={project.ordering[focused].rotation} page={page(project.ordering[focused])} {closeFocus}/>
{:else}
<previews use:dndzone={{items: project.ordering, flipDurationMs: 100}} onconsider={handleDnd} onfinalize={handleDnd}>
<previews use:dndzone={{items: project.ordering, flipDurationMs: 100}} onconsider={handleDnd} onfinalize={handleDnd} bind:this={previewsHtmlElement}>
{#each project.ordering as ordering, pageNum (ordering.id)}
<page oncontextmenu={(e) => onContextMenu(e, pageNum)} class:disabled={!ordering.enabled}>
<img src={previewToDataUrl(page(ordering).preview_jpg)} alt="Page preview for page number {pageNum + 1}"/>
<page
oncontextmenu={(e: MouseEvent) => onContextMenu(e, pageNum)}
onclick={(_: MouseEvent) => onPageClick(pageNum)}
class:disabled={!ordering.enabled}>

<preview>
<img src={previewToDataUrl(page(ordering).preview_jpg)} alt="Page preview for page number {pageNum + 1}" class="rotate{ordering.rotation}" />
</preview>
<p>{pageNum + 1}</p>
</page>
{/each}
Expand Down Expand Up @@ -202,13 +232,35 @@
margin: 0;
}
img {
preview {
display: flex;
align-items: center;
justify-content: center;
height: var(--file-height);
max-width: 100%;
box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
background-color: #ff00ff;
}
img {
max-height: 100%;
max-width: none;
width: auto;
transform-origin: center;
&.rotate90 { transform: rotate(90deg); max-height: unset; max-width: var(--file-height) }
&.rotate180 { transform: rotate(180deg); }
&.rotate270 { transform: rotate(270deg); max-height: unset; max-width: var(--file-height) }
}
}
page:not(:last-child) {
margin-right: var(--page-margin-right);
}
page:first-child {
padding-left: 1px;
}
page:not(:last-child) {
margin-right: var(--page-margin-right);
}
Expand Down
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