adding pdf rendering

src/core/presentations.rs

@@ -1,12 +1,13 @@
 use crisp::types::{Keyword, Symbol, Value};
 use miette::{IntoDiagnostic, Result};
+use mupdf::{Document, Page};
 use serde::{Deserialize, Serialize};
 use sqlx::{
     pool::PoolConnection, prelude::FromRow, query, sqlite::SqliteRow,
     Row, Sqlite, SqliteConnection, SqlitePool,
 };
-use std::path::PathBuf;
-use tracing::error;
+use std::{path::PathBuf, sync::Arc};
+use tracing::{debug, error};
 
 use crate::{Background, Slide, SlideBuilder, TextAlignment};
 
@@ -27,9 +28,7 @@ pub enum PresKind {
     Generic,
 }
 
-#[derive(
-    Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize,
-)]
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct Presentation {
     pub id: i32,
     pub title: String,
@@ -37,6 +36,17 @@ pub struct Presentation {
     pub kind: PresKind,
 }
 
+impl Eq for Presentation {}
+
+impl PartialEq for Presentation {
+    fn eq(&self, other: &Self) -> bool {
+        self.id == other.id
+            && self.title == other.title
+            && self.path == other.path
+            && self.kind == other.kind
+    }
+}
+
 impl From<&Presentation> for Value {
     fn from(value: &Presentation) -> Self {
         Self::List(vec![Self::Symbol(Symbol("presentation".into()))])
@@ -117,6 +127,17 @@ impl ServiceTrait for Presentation {
     }
 
     fn to_slides(&self) -> Result<Vec<Slide>> {
+        debug!(?self);
+        let background = Background::try_from(self.path.clone())
+            .into_diagnostic()?;
+        debug!(?background);
+        let doc = Document::open(background.path.as_path())
+            .into_diagnostic()?;
+        debug!(?doc);
+        let pages = doc.page_count().into_diagnostic()?;
+        debug!(?pages);
+        let mut slides: Vec<Slide> = vec![];
+        for page in 0..pages {
             let slide = SlideBuilder::new()
                 .background(
                     Background::try_from(self.path.clone())
@@ -130,9 +151,12 @@ impl ServiceTrait for Presentation {
                 .video_loop(false)
                 .video_start_time(0.0)
                 .video_end_time(0.0)
+                .pdf_index(page as u32)
                 .build()?;
-
-        Ok(vec![slide])
+            slides.push(slide);
+        }
+        debug!(?slides);
+        Ok(slides)
     }
 
     fn box_clone(&self) -> Box<dyn ServiceTrait> {

src/core/service_items.rs

@@ -318,8 +318,8 @@ impl From<&Image> for ServiceItem {
 
 impl From<&Presentation> for ServiceItem {
     fn from(presentation: &Presentation) -> Self {
-        if let Ok(slides) = presentation.to_slides() {
-            Self {
+        match presentation.to_slides() {
+            Ok(slides) => Self {
                 kind: ServiceItemKind::Presentation(
                     presentation.clone(),
                 ),
@@ -327,8 +327,9 @@ impl From<&Presentation> for ServiceItem {
                 title: presentation.title.clone(),
                 slides: slides.into(),
                 ..Default::default()
-            }
-        } else {
+            },
+            Err(e) => {
+                error!(?e);
                 Self {
                     kind: ServiceItemKind::Presentation(
                         presentation.clone(),
@@ -340,6 +341,7 @@ impl From<&Presentation> for ServiceItem {
             }
         }
     }
+}
 
 impl Service {
     fn add_item(

src/core/slide.rs

@@ -11,7 +11,10 @@ use std::{
 };
 use tracing::error;
 
-use crate::ui::text_svg::{self, TextSvg};
+use crate::ui::{
+    pdf::PdfViewer,
+    text_svg::{self, TextSvg},
+};
 
 use super::songs::Song;
 
@@ -29,6 +32,7 @@ pub struct Slide {
     video_loop: bool,
     video_start_time: f32,
     video_end_time: f32,
+    pdf_index: u32,
     #[serde(skip)]
     pub text_svg: Option<TextSvg>,
 }
@@ -40,6 +44,8 @@ pub enum BackgroundKind {
     #[default]
     Image,
     Video,
+    Pdf,
+    Html,
 }
 
 #[derive(Debug, Clone, Default)]
@@ -157,16 +163,22 @@ impl TryFrom<PathBuf> for Background {
                     .to_str()
                     .unwrap_or_default();
                 match extension {
-                    "jpeg" | "jpg" | "png" | "webp" | "html" => {
-                        Ok(Self {
+                    "jpeg" | "jpg" | "png" | "webp" => Ok(Self {
                         path: value,
                         kind: BackgroundKind::Image,
-                        })
-                    }
+                    }),
                     "mp4" | "mkv" | "webm" => Ok(Self {
                         path: value,
                         kind: BackgroundKind::Video,
                     }),
+                    "pdf" => Ok(Self {
+                        path: value,
+                        kind: BackgroundKind::Pdf,
+                    }),
+                    "html" => Ok(Self {
+                        path: value,
+                        kind: BackgroundKind::Html,
+                    }),
                     _ => Err(ParseError::NonBackgroundFile),
                 }
             }
@@ -281,6 +293,11 @@ impl Slide {
         self
     }
 
+    pub fn set_pdf_index(mut self, pdf_index: u32) -> Self {
+        self.pdf_index = pdf_index;
+        self
+    }
+
     pub fn background(&self) -> &Background {
         &self.background
     }
@@ -309,6 +326,10 @@ impl Slide {
         self.audio.clone()
     }
 
+    pub fn pdf_index(&self) -> u32 {
+        self.pdf_index
+    }
+
     pub fn song_slides(song: &Song) -> Result<Vec<Self>> {
         let lyrics = song.get_lyrics()?;
         let slides: Vec<Slide> = lyrics
@@ -524,6 +545,7 @@ pub struct SlideBuilder {
     video_loop: Option<bool>,
     video_start_time: Option<f32>,
     video_end_time: Option<f32>,
+    pdf_index: Option<u32>,
     #[serde(skip)]
     text_svg: Option<TextSvg>,
 }
@@ -607,6 +629,14 @@ impl SlideBuilder {
         self
     }
 
+    pub(crate) fn pdf_index(
+        mut self,
+        pdf_index: impl Into<u32>,
+    ) -> Self {
+        let _ = self.pdf_index.insert(pdf_index.into());
+        self
+    }
+
     pub(crate) fn build(self) -> Result<Slide> {
         let Some(background) = self.background else {
             return Err(miette!("No background"));
@@ -643,6 +673,7 @@ impl SlideBuilder {
             video_start_time,
             video_end_time,
             text_svg: self.text_svg,
+            pdf_index: self.pdf_index.unwrap_or_default(),
             ..Default::default()
         })
     }

src/ui/pdf.rs

@@ -11,26 +11,42 @@ use miette::Severity;
 use mupdf::Colorspace;
 use mupdf::Document;
 use mupdf::Matrix;
-use mupdf::Page;
+use tracing::debug;
+use tracing::error;
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub struct PdfViewer {
     document: Option<Document>,
-    pages: Option<Vec<Page>>,
-    current_page: Option<Page>,
+    pages: Option<Vec<Handle>>,
+    current_page: Option<Handle>,
     current_index: usize,
-    handle: Option<Handle>,
 }
 
-enum Message {}
+pub enum Message {}
 
 impl PdfViewer {
     pub fn with_pdf(pdf: impl AsRef<Path>) -> Result<Self> {
         let pdf_path = pdf.as_ref();
         let document = Document::open(pdf_path).into_diagnostic()?;
         let pages = document.pages().into_diagnostic()?;
-        let pages: Vec<Page> =
-            pages.filter_map(|page| page.ok()).collect();
+        let pages: Vec<Handle> = pages
+            .filter_map(|page| {
+                let Some(page) = page.ok() else {
+                    return None;
+                };
+                let matrix = Matrix::IDENTITY;
+                let colorspace = Colorspace::device_rgb();
+                let Ok(pixmap) = page
+                    .to_pixmap(&matrix, &colorspace, true, true)
+                    .into_diagnostic()
+                else {
+                    error!("Can't turn this page into pixmap");
+                    return None;
+                };
+                let handle = pixmap.samples().to_vec();
+                Some(Handle::from_bytes(handle))
+            })
+            .collect();
         let Some(page) = document.pages().into_diagnostic()?.next()
         else {
             return Err(miette::miette!(
@@ -48,9 +64,8 @@ impl PdfViewer {
         Ok(Self {
             document: Some(document),
             pages: Some(pages),
-            current_page: Some(page),
             current_index: 0,
-            handle: Some(Handle::from_bytes(handle)),
+            current_page: Some(Handle::from_bytes(handle)),
         })
     }
 
@@ -61,8 +76,29 @@ impl PdfViewer {
         let pdf_path = pdf.as_ref();
         let document = Document::open(pdf_path).into_diagnostic()?;
         let pages = document.pages().into_diagnostic()?;
-        let pages: Vec<Page> =
-            pages.filter_map(|page| page.ok()).collect();
+
+        let pages: Vec<Handle> = pages
+            .filter_map(|page| {
+                let Some(page) = page.ok() else {
+                    return None;
+                };
+                let matrix = Matrix::IDENTITY;
+                let colorspace = Colorspace::device_rgb();
+                let Ok(pixmap) = page
+                    .to_pixmap(&matrix, &colorspace, true, true)
+                    .into_diagnostic()
+                else {
+                    error!("Can't turn this page into pixmap");
+                    return None;
+                };
+                debug!(?pixmap);
+                Some(Handle::from_rgba(
+                    pixmap.width(),
+                    pixmap.height(),
+                    pixmap.samples().to_vec(),
+                ))
+            })
+            .collect();
         let Some(page) = document.pages().into_diagnostic()?.next()
         else {
             return Err(miette::miette!(
@@ -70,18 +106,11 @@ impl PdfViewer {
                 "There isn't a first page here"
             ));
         };
-        let page = page.into_diagnostic()?;
-        let matrix = Matrix::IDENTITY;
-        let colorspace = Colorspace::device_rgb();
-        let pixmap = page
-            .to_pixmap(&matrix, &colorspace, true, true)
-            .into_diagnostic()?;
-        let handle = pixmap.samples().to_vec();
+        self.current_page = pages.get(0).map(|h| h.to_owned());
         self.document = Some(document);
         self.pages = Some(pages);
-        self.current_page = Some(page);
         self.current_index = 0;
-        self.handle = Some(Handle::from_bytes(handle));
+        debug!(?self);
         Ok(())
     }
 
@@ -92,15 +121,8 @@ impl PdfViewer {
         let Some(page) = pages.get(self.current_index + 1) else {
             return Err(miette::miette!("There isn't a next page"));
         };
-        let matrix = Matrix::IDENTITY;
-        let colorspace = Colorspace::device_rgb();
-        let pixmap = page
-            .to_pixmap(&matrix, &colorspace, true, true)
-            .into_diagnostic()?;
-        let handle = pixmap.samples().to_vec();
         self.current_page = Some(page.to_owned());
         self.current_index += 1;
-        self.handle = Some(Handle::from_bytes(handle));
         Ok(())
     }
 
@@ -116,20 +138,16 @@ impl PdfViewer {
                 "There isn't a previous page"
             ));
         };
-        let matrix = Matrix::IDENTITY;
-        let colorspace = Colorspace::device_rgb();
-        let pixmap = page
-            .to_pixmap(&matrix, &colorspace, true, true)
-            .into_diagnostic()?;
-        let handle = pixmap.samples().to_vec();
         self.current_page = Some(page.to_owned());
         self.current_index -= 1;
-        self.handle = Some(Handle::from_bytes(handle));
         Ok(())
     }
 
-    pub fn view(&self) -> Option<Element<Message>> {
-        let Some(handle) = self.handle.clone() else {
+    pub fn view(&self, index: u32) -> Option<Element<Message>> {
+        let Some(pages) = &self.pages else {
+            return None;
+        };
+        let Some(handle) = pages.get(index as usize) else {
             return None;
         };
         Some(

src/ui/presenter.rs

@@ -174,6 +174,7 @@ impl Presenter {
             },
             scroll_id: Id::unique(),
             current_font: cosmic::font::default(),
+            pdf_viewer: PdfViewer::default(),
         }
     }
 
@@ -206,7 +207,8 @@ impl Presenter {
             Message::SlideChange(slide) => {
                 let slide_text = slide.text();
                 debug!(slide_text, "slide changed");
-                debug!("comparing background...");
+                let bg = slide.background().clone();
+                debug!(?bg, "comparing background...");
                 let backgrounds_match =
                     self.current_slide.background()
                         == slide.background();
@@ -223,6 +225,11 @@ impl Presenter {
                     self.reset_video();
                 }
 
+                if slide.background().kind == BackgroundKind::Pdf {
+                    self.pdf_viewer
+                        .insert_pdf(&slide.background().path);
+                }
+
                 let offset = AbsoluteOffset {
                     x: {
                         if self.current_slide_index > 2 {
@@ -404,6 +411,7 @@ impl Presenter {
         slide_view(
             &self.current_slide,
             &self.video,
+            &self.pdf_viewer,
             self.current_font,
             false,
             true,
@@ -414,6 +422,7 @@ impl Presenter {
         slide_view(
             &self.current_slide,
             &self.video,
+            &self.pdf_viewer,
             self.current_font,
             false,
             false,
@@ -450,6 +459,7 @@ impl Presenter {
                         let container = slide_view(
                             &slide,
                             &self.video,
+                            &self.pdf_viewer,
                             font,
                             true,
                             false,
@@ -636,7 +646,6 @@ impl Presenter {
 
     fn reset_video(&mut self) {
         match self.current_slide.background().kind {
-            BackgroundKind::Image => self.video = None,
             BackgroundKind::Video => {
                 let path = &self.current_slide.background().path;
                 if path.exists() {
@@ -660,6 +669,7 @@ impl Presenter {
                     self.video = None;
                 }
             }
+            _ => self.video = None,
         }
     }
 
@@ -712,6 +722,7 @@ fn scale_font(font_size: f32, width: f32) -> f32 {
 pub(crate) fn slide_view<'a>(
     slide: &'a Slide,
     video: &'a Option<Video>,
+    pdf_viewer: &'a PdfViewer,
     font: Font,
     delegate: bool,
     hide_mouse: bool,
@@ -788,6 +799,18 @@ pub(crate) fn slide_view<'a>(
                     Container::new(Space::new(0, 0))
                 }
             }
+            BackgroundKind::Pdf => Container::new(
+                if let Some(pdf) = pdf_viewer.view(slide.pdf_index())
+                {
+                    pdf.map(|_| Message::None)
+                } else {
+                    Space::new(0.0, 0.0).into()
+                },
+            )
+            .center_x(width)
+            .center_y(size.height)
+            .clip(true),
+            BackgroundKind::Html => todo!(),
         };
         let stack = stack!(
             black,

test_presentation.lisp

@@ -3,6 +3,7 @@
 (slide (video :source "~/vids/test/camprules2024.mp4" :fit contain))
 ;; (slide (video :source "~/vids/never give up.mkv" :fit contain))
 ;; (slide (video :source "~/vids/The promise of Rust.mkv" :fit contain))
+(slide :background (presentation :source "~/docs/description-of-a-discipled-person-assessment-2016.pdf" :fit contain))
 (song :id 7 :author "North Point Worship"
       :font "Quicksand" :font-size 120
       :shadow "" :stroke ""