From 9c15b76c5a6355902b2a105a7c6ee93f6b5016dc Mon Sep 17 00:00:00 2001
From: Minijackson <minijackson@riseup.net>
Date: Thu, 29 Dec 2022 01:40:08 +0100
Subject: WIP v2: text works, primitives works in Lua

---
 cairo-renderer/src/lib.rs | 45 +++++++++++++++++++++++----------------------
 1 file changed, 23 insertions(+), 22 deletions(-)

(limited to 'cairo-renderer')

diff --git a/cairo-renderer/src/lib.rs b/cairo-renderer/src/lib.rs
index d912afc..df6f8fd 100644
--- a/cairo-renderer/src/lib.rs
+++ b/cairo-renderer/src/lib.rs
@@ -1,5 +1,5 @@
 use diaphragm_core::{
-    styles::{Pattern, DefinedDashStyle},
+    styles::{DefinedDashStyle, Pattern},
     text::{DefinedFontDescription, FontDescription},
     Renderer,
 };
@@ -67,28 +67,29 @@ impl Renderer for CairoRenderer {
     }
 
     fn text_extents(&self, text: &str, font: &FontDescription) -> (f64, f64) {
+        // Pango gives us integer back, so we lose some precision. We use this for that.
+        const TEST_ABSOLUTE_SIZE: f64 = 1_000_000.;
+
         let layout = pangocairo::create_layout(&self.ctx);
-        let font_desc = pango::FontDescription::from_string(&font.family);
+        let mut font_desc = pango::FontDescription::from_string(&font.family);
+        font_desc.set_absolute_size(TEST_ABSOLUTE_SIZE);
         layout.set_font_description(Some(&font_desc));
         layout.set_markup(text);
 
-        //let (extents, _) = layout.get_pixel_extents();
-        //(extents.width as f64, extents.height as f64)
-
         // TODO: get height from the baseline
-        let mut layout_iter = layout.iter();
-        let _height = loop {
-            if layout_iter.at_last_line() {
-                break layout_iter.baseline();
-            }
-
-            layout_iter.next_line();
-        };
-
-        // TODO: Probably should use the logical extents, but it has weird width
-        let (_, extents) = layout.pixel_extents();
-        //let (extents, _) = layout.get_pixel_extents();
-        (extents.width() as f64, extents.height() as f64)
+        // let mut layout_iter = layout.iter();
+        // let _height = loop {
+        //     if layout_iter.at_last_line() {
+        //         break layout_iter.baseline();
+        //     }
+        //     layout_iter.next_line();
+        // };
+
+        let (_, extents) = dbg!(layout.pixel_extents());
+        (
+            extents.width() as f64 / TEST_ABSOLUTE_SIZE,
+            extents.height() as f64 / TEST_ABSOLUTE_SIZE,
+        )
 
         //let (width, height) = layout.get_pixel_size();
         //(width as f64, height as f64)
@@ -98,14 +99,14 @@ impl Renderer for CairoRenderer {
         let layout = pangocairo::create_layout(&self.ctx);
         let mut font_desc = pango::FontDescription::from_string(&font.family);
 
-        // TODO: I have no fucking idea why
-        font_desc.set_size((font.size * 600.) as _);
-        //font_desc.set_size((font.size * 700.) as _);
-        //font_desc.set_absolute_size(font.size * 800.);
+        font_desc.set_absolute_size(dbg!(font.size) as _);
         layout.set_font_description(Some(&font_desc));
         layout.set_markup(text);
 
         //self.ctx.set_font_size(dbg!(font.size));
         pangocairo::show_layout(&self.ctx, &layout);
+
+        dbg!(pangocairo::context_get_resolution(&layout.context()));
+        dbg!(layout.pixel_extents());
     }
 }
-- 
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