Convert Painter

Author: emilk

egui/src/layout.rs

@@ -767,7 +767,7 @@ impl Layout {
         painter: &crate::Painter,
         region: &Region,
         stroke: epaint::Stroke,
-        text: impl ToString,
+        text: impl Into<crate::WidgetText>,
     ) {
         let cursor = region.cursor;
         let next_pos = self.next_widget_position(region);

egui/src/painter.rs

@@ -1,7 +1,7 @@
 use crate::{
     emath::{Align2, Pos2, Rect, Vec2},
     layers::{LayerId, PaintList, ShapeIdx},
-    Color32, CtxRef,
+    Color32, CtxRef, WidgetText,
 };
 use epaint::{
     mutex::Mutex,
@@ -195,41 +195,34 @@ impl Painter {
 
 /// ## Debug painting
 impl Painter {
-    #[allow(clippy::needless_pass_by_value)]
-    pub fn debug_rect(&mut self, rect: Rect, color: Color32, text: impl ToString) {
+    pub fn debug_rect(&mut self, rect: Rect, color: Color32, text: impl Into<WidgetText>) {
         self.rect_stroke(rect, 0.0, (1.0, color));
         let text_style = TextStyle::Monospace;
-        self.text(
-            rect.min,
-            Align2::LEFT_TOP,
-            text.to_string(),
-            text_style,
-            color,
-        );
+        self.text(rect.min, Align2::LEFT_TOP, text, text_style, color);
     }
 
     pub fn error(&self, pos: Pos2, text: impl std::fmt::Display) -> Rect {
         self.debug_text(pos, Align2::LEFT_TOP, Color32::RED, format!("🔥 {}", text))
     }
 
     /// text with a background
-    #[allow(clippy::needless_pass_by_value)]
     pub fn debug_text(
         &self,
         pos: Pos2,
         anchor: Align2,
         color: Color32,
-        text: impl ToString,
+        text: impl Into<WidgetText>,
     ) -> Rect {
-        let galley = self.layout_no_wrap(text.to_string(), TextStyle::Monospace, color);
-        let rect = anchor.anchor_rect(Rect::from_min_size(pos, galley.size()));
+        let text = text.into();
+        let text_galley = text.into_galley_raw(self.ctx(), f32::INFINITY, TextStyle::Monospace);
+        let rect = anchor.anchor_rect(Rect::from_min_size(pos, text_galley.size()));
         let frame_rect = rect.expand(2.0);
         self.add(Shape::rect_filled(
             frame_rect,
             0.0,
             Color32::from_black_alpha(240),
         ));
-        self.galley(rect.min, galley);
+        text_galley.paint_with_fallback_color(self, rect.min, color);
         frame_rect
     }
 }
@@ -332,18 +325,18 @@ impl Painter {
     /// [`Self::layout`] or [`Self::layout_no_wrap`].
     ///
     /// Returns where the text ended up.
-    #[allow(clippy::needless_pass_by_value)]
     pub fn text(
         &self,
         pos: Pos2,
         anchor: Align2,
-        text: impl ToString,
+        text: impl Into<WidgetText>,
         text_style: TextStyle,
         text_color: Color32,
     ) -> Rect {
-        let galley = self.layout_no_wrap(text.to_string(), text_style, text_color);
-        let rect = anchor.anchor_rect(Rect::from_min_size(pos, galley.size()));
-        self.galley(rect.min, galley);
+        let text = text.into();
+        let text_galley = text.into_galley_raw(self.ctx(), f32::INFINITY, text_style);
+        let rect = anchor.anchor_rect(Rect::from_min_size(pos, text_galley.size()));
+        text_galley.paint_with_fallback_color(self, rect.min, text_color);
         rect
     }
 

egui/src/placer.rs

@@ -262,7 +262,11 @@ impl Placer {
 }
 
 impl Placer {
-    pub(crate) fn debug_paint_cursor(&self, painter: &crate::Painter, text: impl ToString) {
+    pub(crate) fn debug_paint_cursor(
+        &self,
+        painter: &crate::Painter,
+        text: impl Into<crate::WidgetText>,
+    ) {
         let stroke = Stroke::new(1.0, Color32::DEBUG_COLOR);
 
         if let Some(grid) = &self.grid {

egui/src/ui.rs

@@ -1787,7 +1787,7 @@ impl Ui {
 
     /// Shows the given text where the next widget is to be placed
     /// if when [`Context::set_debug_on_hover`] has been turned on and the mouse is hovering the Ui.
-    pub fn trace_location(&self, text: impl ToString) {
+    pub fn trace_location(&self, text: impl Into<crate::WidgetText>) {
         let rect = self.max_rect();
         if self.style().debug.debug_on_hover && self.rect_contains_pointer(rect) {
             self.placer

egui/src/widget_text.rs

@@ -509,6 +509,36 @@ impl WidgetText {
             },
         }
     }
+
+    pub fn into_galley_raw(
+        self,
+        ctx: &crate::Context,
+        wrap_width: f32,
+        default_text_style: TextStyle,
+    ) -> WidgetTextGalley {
+        match self {
+            Self::RichText(text) => {
+                let valign = Align::Center;
+                let mut text_job = text.into_text_job(&ctx.style(), default_text_style, valign);
+                text_job.job.wrap_width = wrap_width;
+                WidgetTextGalley {
+                    galley: ctx.fonts().layout_job(text_job.job),
+                    galley_has_color: text_job.job_has_color,
+                }
+            }
+            Self::LayoutJob(mut job) => {
+                job.wrap_width = wrap_width;
+                WidgetTextGalley {
+                    galley: ctx.fonts().layout_job(job),
+                    galley_has_color: true,
+                }
+            }
+            Self::Galley(galley) => WidgetTextGalley {
+                galley,
+                galley_has_color: true,
+            },
+        }
+    }
 }
 
 impl From<&str> for WidgetText {