[librsvg: 12/35] NormalizeParams::from_dpi - little hack for rsvg-convert

[Marge Bot <marge-bot src gnome org>]

commit 28dcc72d2e0ab6c1a4ec64d5225b40516fa238fd
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Jun 14 15:53:34 2021 -0500

    NormalizeParams::from_dpi - little hack for rsvg-convert
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/547>

 src/length.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/src/length.rs b/src/length.rs
index fccb63e0..42b9a072 100644
--- a/src/length.rs
+++ b/src/length.rs
@@ -63,6 +63,7 @@ use crate::drawing_ctx::ViewParams;
 use crate::error::*;
 use crate::parsers::{finite_f32, Parse};
 use crate::properties::ComputedValues;
+use crate::rect::Rect;
 use crate::viewbox::ViewBox;
 
 /// Units for length values.
@@ -348,6 +349,15 @@ impl NormalizeParams {
             dpi: params.dpi,
         }
     }
+
+    /// Just used by rsvg-convert, where there is no font size nor viewport.
+    pub fn from_dpi(dpi: Dpi) -> NormalizeParams {
+        NormalizeParams {
+            vbox: ViewBox::from(Rect::default()),
+            font_size: 1.0,
+            dpi,
+        }
+    }
 }
 
 impl<N: Normalize, V: Validate> CssLength<N, V> {