render PDFs as a continuous vertical page strip

1 files changed, 33 insertions, 0 deletions

diff --git a/src/pdf_bridge.c b/src/pdf_bridge.c
index 320919b1..0fcf74c4 100644
--- a/src/pdf_bridge.c
+++ b/src/pdf_bridge.c
@@ -231,6 +231,39 @@ pardes_pdf_close(pardes_pdf_document *document)
 }
 
 int
+pardes_pdf_get_page_size(
+    pardes_pdf_document *document,
+    int page_number,
+    pardes_pdf_page_size *out)
+{
+    fz_context *ctx;
+    fz_rect bounds;
+
+    if (document == NULL || out == NULL || page_number < 0 ||
+        page_number >= document->page_count)
+        return PARDES_PDF_ERROR;
+
+    memset(out, 0, sizeof(*out));
+    ctx = document->ctx;
+    fz_try(ctx)
+    {
+        pardes_pdf_cache_page(document, page_number, 0);
+        bounds = document->cached_bounds;
+        out->width = bounds.x1 - bounds.x0;
+        out->height = bounds.y1 - bounds.y0;
+        if (!(out->width > 0.0f) || !(out->height > 0.0f))
+            fz_throw(ctx, FZ_ERROR_FORMAT, "PDF page has empty bounds");
+    }
+    fz_catch(ctx)
+    {
+        fz_report_error(ctx);
+        memset(out, 0, sizeof(*out));
+        return PARDES_PDF_ERROR;
+    }
+    return PARDES_PDF_OK;
+}
+
+int
 pardes_pdf_render(
     pardes_pdf_document *document,
     int page_number,