misc text rendering fixes (#247)

* enable clipping for texts

* improve text rendering in HiDPI

* fix tests

Author: msparkles

crates/yakui-widgets/src/widgets/render_text.rs

@@ -101,6 +101,8 @@ impl Widget for RenderTextWidget {
     }
 
     fn layout(&self, ctx: LayoutContext<'_>, constraints: Constraints) -> Vec2 {
+        ctx.layout.enable_clipping(ctx.dom);
+
         let max_width = constraints
             .max
             .x
@@ -168,7 +170,6 @@ impl Widget for RenderTextWidget {
                 .map(|layout| layout.line_w)
                 .max_by(|a, b| a.total_cmp(b))
                 .unwrap_or_default()
-                .ceil()
                 .max(constraints.min.x * ctx.layout.scale_factor());
 
             for run in buffer.layout_runs() {
@@ -188,7 +189,10 @@ impl Widget for RenderTextWidget {
                     .sum::<f32>()
                     .ceil();
 
-                (Vec2::new(widest_line, size_y) / ctx.layout.scale_factor()).round()
+                Vec2::new(
+                    widest_line / ctx.layout.scale_factor(),
+                    (size_y / ctx.layout.scale_factor()).ceil(),
+                )
             };
 
             let size = constraints.constrain(size);

crates/yakui-widgets/tests/snapshots/align_text_center.snap

@@ -4,6 +4,6 @@ assertion_line: 264
 expression: view
 ---
 - AlignWidget pos(0, 0) size(1000, 1000)
-  - TextWidget pos(376, 464.5) size(248, 71)
-    - PadWidget pos(376, 464.5) size(248, 71)
-      - RenderTextWidget pos(376, 464.5) size(248, 71)
+  - TextWidget pos(376.25, 464.5) size(247.5, 71)
+    - PadWidget pos(376.25, 464.5) size(247.5, 71)
+      - RenderTextWidget pos(376.25, 464.5) size(247.5, 71)

crates/yakui-widgets/tests/snapshots/button_text_alignment.snap

@@ -9,4 +9,4 @@ expression: view
       - RoundRectWidget pos(0, 0) size(800, 800)
         - PadWidget pos(0, 0) size(800, 800)
           - AlignWidget pos(20, 10) size(760, 780)
-            - RenderTextWidget pos(276, 364.5) size(248, 71)
+            - RenderTextWidget pos(276.25, 364.5) size(247.5, 71)

crates/yakui-widgets/tests/snapshots/column_intrinsic.snap

@@ -4,8 +4,8 @@ assertion_line: 337
 expression: view
 ---
 - ListWidget pos(0, 0) size(1000, 1000)
-  - ButtonWidget pos(0, 0) size(74, 37)
-    - RoundRectWidget pos(0, 0) size(74, 37)
-      - PadWidget pos(0, 0) size(74, 37)
-        - AlignWidget pos(20, 10) size(34, 17)
-          - RenderTextWidget pos(20, 10) size(34, 17)
+  - ButtonWidget pos(0, 0) size(73.26367, 37)
+    - RoundRectWidget pos(0, 0) size(73.26367, 37)
+      - PadWidget pos(0, 0) size(73.26367, 37)
+        - AlignWidget pos(20, 10) size(33.26367, 17)
+          - RenderTextWidget pos(20, 10) size(33.26367, 17)