Fixed several found bugs

.vimspector.json

@@ -5,8 +5,10 @@
       "configuration": {
         "type": "lldb",
         "request": "launch",
-        "sourceLanguages": ["rust"],
-        "program": "${workspaceRoot}/target/debug/examples/windows",
+        "sourceLanguages": [
+          "rust"
+        ],
+        "program": "${workspaceRoot}/target/debug/examples/gui",
         "MIMode": "gdb",
         "setupCommands": [
           {

examples/gui.rs

@@ -19,6 +19,7 @@ struct Gui {
     advanced_slider: f32,
     select_box: usize,
     select_list: usize,
+    collapsing_header_list: usize,
     font_size: u32,
     font_family: usize,
     theme: usize,
@@ -46,6 +47,7 @@ impl Gui {
             advanced_slider: 0.5,
             select_box: 0,
             select_list: 0,
+            collapsing_header_list: 0,
             font_size: 12,
             font_family: 0,
             theme: 0,
@@ -287,7 +289,7 @@ impl Gui {
         s.collapsing_header("Collapsing Header", |s: &mut PixState| {
             s.next_width(300);
             let items = ["Item 1", "Item 2", "Item 3", "Item 4"];
-            s.select_list("Some list", &mut self.select_list, &items, 3)?;
+            s.select_list("Some list", &mut self.collapsing_header_list, &items, 3)?;
             Ok(())
         })?;
 

src/gui/layout.rs

@@ -180,7 +180,7 @@ impl PixState {
 
             // Calculate tab size
             let (width, height) = s.text_size(tab_label)?;
-            let tab = rect![pos + fpad.x(), width, height].offset_size(2 * ipad);
+            let tab = rect![pos + fpad, width, height].offset_size(2 * ipad);
 
             // Check hover/active/keyboard focus
             let hovered = s.ui.try_hover(id, &tab);
@@ -247,8 +247,8 @@ impl PixState {
         let fpad = s.theme.spacing.frame_pad;
         s.push();
         s.stroke(colors.disabled());
-        let y = pos.y() + 1;
-        let line_width = s.ui_width()? - fpad.x();
+        let y = pos.y() + fpad.y() + 1;
+        let line_width = s.ui_width()?;
         s.line(line_![fpad.x(), y, line_width, y])?;
         s.pop();
         s.advance_cursor([line_width, fpad.y()]);

src/gui/state.rs

@@ -792,7 +792,7 @@ impl PixState {
         self.ui.cursor = point![padx + offset_x, pos.y() + line_height + pady];
         self.ui.pline_height = line_height;
         self.ui.line_height = 0;
-        self.ui.last_size = Some(rect![self.ui.cursor, size.x(), size.y()]);
+        self.ui.last_size = Some(rect![pos, size.x(), size.y()]);
     }
 
     /// Get or create a UI texture to render to

src/gui/widgets.rs

@@ -367,6 +367,7 @@ impl PixState {
     }
 
     /// Render an arrow aligned with the current font size.
+    ///
     /// # Errors
     ///
     /// If the renderer fails to draw to the current render target, then an error is returned.

src/gui/widgets/select.rs

@@ -26,7 +26,6 @@ use crate::{
     ops::clamp_size,
     prelude::*,
 };
-use anyhow::bail;
 use std::cmp;
 
 /// The maximum number of select elements that can be displayed at once.
@@ -63,7 +62,7 @@ impl PixState {
         label: S,
         selected: &mut usize,
         items: &[I],
-        displayed_count: usize,
+        mut displayed_count: usize,
     ) -> PixResult<bool>
     where
         S: AsRef<str>,
@@ -72,13 +71,10 @@ impl PixState {
         let label = label.as_ref();
 
         if displayed_count > MAX_DISPLAYED {
-            bail!("displayed_count exceeds maximum of: {}", MAX_DISPLAYED);
-        } else if *selected > items.len() {
-            bail!(
-                "selected out of bounds: the len is {} but the value is {}",
-                items.len(),
-                *selected
-            );
+            displayed_count = MAX_DISPLAYED;
+        }
+        if *selected >= items.len() {
+            *selected = items.len() - 1;
         }
 
         let s = self;
@@ -140,10 +136,14 @@ impl PixState {
         if arrow_x + arrow_width - fpad.x() <= select_box.right() {
             s.no_stroke();
             s.fill(fg);
+            s.clip(arrow_box)?;
             s.arrow(
-                [arrow_x + fpad.y(), select_y + fpad.y()],
+                [
+                    arrow_x + fpad.y(),
+                    select_y + arrow_box.height() / 2 - arrow_width / 4,
+                ],
                 Direction::Down,
-                1.0,
+                fpad.y() as Scalar / 8.0,
             )?;
         }
 
@@ -221,7 +221,7 @@ impl PixState {
         label: S,
         selected: &mut usize,
         items: &[I],
-        displayed_count: usize,
+        mut displayed_count: usize,
     ) -> PixResult<bool>
     where
         S: AsRef<str>,
@@ -230,13 +230,10 @@ impl PixState {
         let label = label.as_ref();
 
         if displayed_count > MAX_DISPLAYED {
-            bail!("displayed_count exceeds maximum of: {}", MAX_DISPLAYED);
-        } else if *selected > items.len() {
-            bail!(
-                "selected out of bounds: the len is {} but the value is {}",
-                items.len(),
-                *selected
-            );
+            displayed_count = MAX_DISPLAYED;
+        }
+        if *selected >= items.len() {
+            *selected = items.len() - 1;
         }
 
         let s = self;

src/gui/widgets/text.rs

@@ -194,73 +194,71 @@ impl PixState {
             angle_radians = angle.map(Scalar::to_radians);
         }
 
-        let mut render_text = |mut color: Color, outline: u8| -> PixResult<(u32, u32)> {
-            s.push();
+        let mut render_text =
+            |pos: PointI2, mut color: Color, outline: u8| -> PixResult<Rect<i32>> {
+                s.push();
 
-            // Make sure to offset the text if an outline was drawn
-            if stroke.is_some() && stroke_weight > 0 && outline == 0 {
-                pos += i32::from(stroke_weight);
-            }
-            if disabled {
-                color = color.blended(colors.background, 0.38);
-            }
-
-            let (w, h) = if wrap_width.is_some() {
-                s.renderer.text(
-                    pos,
-                    text,
-                    wrap_width,
-                    angle,
-                    center,
-                    flipped,
-                    Some(color),
-                    outline,
-                )?
-            } else {
-                let mut x = pos.x();
-                let mut y = pos.y();
-                let (mut total_width, mut total_height) = (0, 0);
-                for line in text.split('\n') {
-                    let (line_width, line_height) = s.renderer.size_of(line, wrap_width)?;
-                    let rect = rect![0, 0, clamp_size(line_width), clamp_size(line_height)];
-                    let bounding_box =
-                        angle_radians.map_or(rect, |angle| rect.rotated(angle, center));
-                    x -= bounding_box.x();
-                    y -= bounding_box.y();
+                if disabled {
+                    color = color.blended(colors.background, 0.38);
+                }
+                let (w, h) = if wrap_width.is_some() {
                     s.renderer.text(
-                        point![x, y],
-                        line,
+                        pos,
+                        text,
                         wrap_width,
                         angle,
                         center,
                         flipped,
                         Some(color),
                         outline,
-                    )?;
-                    total_width += bounding_box.width() as u32;
-                    total_height += bounding_box.height() as u32;
-                    y += bounding_box.height();
-                }
-                (total_width, total_height)
+                    )?
+                } else {
+                    let mut x = pos.x();
+                    let mut y = pos.y();
+                    let (mut total_width, mut total_height) = (0, 0);
+                    for line in text.split('\n') {
+                        let (line_width, line_height) = s.renderer.size_of(line, wrap_width)?;
+                        let rect = rect![0, 0, clamp_size(line_width), clamp_size(line_height)];
+                        let bounding_box =
+                            angle_radians.map_or(rect, |angle| rect.rotated(angle, center));
+                        x -= bounding_box.x();
+                        y -= bounding_box.y();
+                        s.renderer.text(
+                            point![x, y],
+                            line,
+                            wrap_width,
+                            angle,
+                            center,
+                            flipped,
+                            Some(color),
+                            outline,
+                        )?;
+                        total_width += bounding_box.width() as u32;
+                        total_height += bounding_box.height() as u32;
+                        y += bounding_box.height();
+                    }
+                    (total_width, total_height)
+                };
+                let rect = rect![pos, clamp_size(w), clamp_size(h)];
+
+                s.pop();
+                Ok(rect)
             };
-            let rect = rect![pos, clamp_size(w), clamp_size(h)];
 
-            // Only advance the cursor if we're not drawing a text outline
-            if outline == 0 {
-                s.advance_cursor(rect.size());
+        let rect = {
+            let stroke_rect = match stroke {
+                Some(stroke) if stroke_weight > 0 => Some(render_text(pos, stroke, stroke_weight)?),
+                _ => None,
+            };
+            if stroke_rect.is_some() {
+                pos += i32::from(stroke_weight);
             }
-
-            s.pop();
-            Ok((w, h))
-        };
-
-        let stroke_size = match stroke {
-            Some(stroke) if stroke_weight > 0 => Some(render_text(stroke, stroke_weight)?),
-            _ => None,
+            let text_rect = render_text(pos, fill, 0)?;
+            stroke_rect.unwrap_or(text_rect)
         };
-        let size = render_text(fill, 0)?;
+        s.advance_cursor(rect.size());
 
-        Ok(stroke_size.unwrap_or(size))
+        Ok((rect.width() as u32, rect.height() as u32))
     }
 
     /// Draw bulleted text to the current canvas.

src/gui/widgets/tooltip.rs

@@ -268,7 +268,7 @@ impl PixState {
         }
         if rect.bottom() > win_height {
             let offset = (rect.bottom() - win_height) + pad.y();
-            rect = rect.offset([-offset, 0]);
+            rect = rect.offset([0, -offset]);
             let mpos = s.mouse_pos();
             if rect.contains_point(mpos) {
                 rect.set_bottom(mpos.y() - pad.y());