Adding second (flippable) page to weekly.

gmadrid · Jan 6, 2023 · 8800ccb · 8800ccb
1 parent 26931b7
commit 8800ccb
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Showing 2 changed files with 39 additions and 9 deletions.
diff --git a/src/bin/weekly.rs b/src/bin/weekly.rs
@@ -1,8 +1,9 @@
 use argh::FromArgs;
 use printpdf::PdfDocumentReference;
 use weekly::{
-    save_double_sided_document, sizes, Attributes, Circle, Colors, GridDescription, HasRenderAttrs,
-    Instructions, NumericUnit, Result, TGrid, TextContext, Unit, WLine, WRect,
+    save_double_sided_document, save_one_page_document, sizes, Attributes, Circle, Colors,
+    GridDescription, HasRenderAttrs, Instructions, NumericUnit, Result, TGrid, TextContext, Unit,
+    WLine, WRect,
 };
 
 const GOLDEN_RATIO: f64 = 1.618033988749894;
@@ -30,6 +31,14 @@ struct Args {
     /// name of the output file
     #[argh(positional, default = "String::from(\"weekly.pdf\")")]
     output_filename: String,
+
+    /// print twice on two pages
+    #[argh(switch, short = '2')]
+    twice: bool,
+
+    /// flip the second page
+    #[argh(switch, short = 'f')]
+    flip: bool,
 }
 
 #[derive(Debug)]
@@ -393,10 +402,20 @@ pub fn main() -> Result<()> {
 
     let page_rect = sizes::letter();
 
-    save_double_sided_document(
-        "Productivity Tracker",
-        args.output_filename,
-        &page_rect,
-        render_weekly_page,
-    )
+    if args.twice {
+        save_double_sided_document(
+            "Productivity Tracker",
+            args.output_filename,
+            &page_rect,
+            args.flip,
+            render_weekly_page,
+        )
+    } else {
+        save_one_page_document(
+            "Productivity Tracker",
+            args.output_filename,
+            &page_rect,
+            render_weekly_page,
+        )
+    }
 }
diff --git a/src/pdfutils/mod.rs b/src/pdfutils/mod.rs
@@ -314,6 +314,7 @@ pub fn save_double_sided_document<F>(
     title: &str,
     filename: impl AsRef<Path>,
     page_bounds: &WRect,
+    flip_page_2: bool,
     callback: F,
 ) -> Result<()>
 where
@@ -335,7 +336,17 @@ where
         "Layer 1",
     );
 
-    instructions.draw_to_layer(&doc, &doc.get_page(page2).get_layer(layer1))?;
+    let layer1_ref = &doc.get_page(page2).get_layer(layer1);
+    layer1_ref.save_graphics_state();
+
+    if flip_page_2 {
+        let width_mm: Mm = page_bounds.width().into();
+        let height_mm: Mm = page_bounds.height().into();
+        let mat = CurTransMat::TranslateRotate(width_mm.into_pt(), height_mm.into_pt(), 180.0);
+        layer1_ref.set_ctm(mat);
+    }
+    instructions.draw_to_layer(&doc, layer1_ref)?;
+    layer1_ref.restore_graphics_state();
 
     doc.save(&mut BufWriter::new(File::create(filename)?))
         .map_err(|e| e.into())