Merge 5d8a50d009 into 1b16cfbe71

data/extensions/aseprite-theme/dark/theme.xml

@@ -393,6 +393,7 @@
         <part id="icon_slice" x="248" y="264" w="8" h="8"/>
         <part id="icon_aspect_ratio" x="256" y="264" w="10" h="8"/>
         <part id="icon_delta" x="266" y="264" w="6" h="8"/>
+        <part id="icon_corner_radius" x="272" y="264" w="8" h="8"/>
         <part id="icon_add" x="184" y="200" w="5" h="5"/>
         <part id="tool_rectangular_marquee" x="144" y="0" w="16" h="16"/>
         <part id="tool_elliptical_marquee" x="160" y="0" w="16" h="16"/>

data/extensions/aseprite-theme/theme.xml

@@ -389,6 +389,7 @@
         <part id="icon_slice" x="248" y="264" w="8" h="8"/>
         <part id="icon_aspect_ratio" x="256" y="264" w="10" h="8"/>
         <part id="icon_delta" x="266" y="264" w="6" h="8"/>
+        <part id="icon_corner_radius" x="272" y="264" w="8" h="8"/>
         <part id="icon_add" x="184" y="200" w="5" h="5"/>
         <part id="tool_rectangular_marquee" x="144" y="0" w="16" h="16"/>
         <part id="tool_elliptical_marquee" x="160" y="0" w="16" h="16"/>

data/gui.xml

@@ -678,6 +678,8 @@
       <!-- Modifiers for two-points tool controller -->
       <key action="SquareAspect" shortcut="Shift" />
       <key action="DrawFromCenter" shortcut="Ctrl" />
+      <key action="CornerRadius" shortcut="C" />
+
       <!-- Modifiers for two-or-more-points tools -->
       <key action="MoveOrigin" shortcut="Space" />
       <key action="RotateShape" shortcut="Alt" />

data/pref.xml

@@ -481,6 +481,7 @@
     <option id="filled_preview" type="bool" default="false" />
     <option id="ink" type="app::tools::InkType" default="app::tools::InkType::DEFAULT" />
     <option id="freehand_algorithm" type="app::tools::FreehandAlgorithm" default="app::tools::FreehandAlgorithm::DEFAULT" />
+    <option id="corner_radius" type="int" default="0" />
     <!-- Update app::Preferences::resetToolPreferences() function if you add new sections here  -->
     <section id="brush">
       <option id="type" type="BrushType" default="BrushType::CIRCLE" />

data/strings/en.ini

@@ -601,6 +601,7 @@ discard_brush = Discard Brush (Esc)
 brush_type = Brush Type
 brush_size = Brush Size (in pixels)
 brush_angle = Brush Angle (in degrees)
+corner_radius = Corner Radius (in pixels)
 ink = Ink
 opacity = Opacity (paint intensity)
 shades = Shades
@@ -1006,6 +1007,7 @@ move_origin = Move Origin
 square_aspect = Square Aspect
 draw_from_center = Draw From Center
 rotate_shape = Rotate Shape
+corner_radius = Corner Radius
 trigger_left_mouse_button = Trigger Left Mouse Button
 trigger_right_mouse_button = Trigger Right Mouse Button
 ok = &OK

src/app/tools/controller.h

@@ -62,6 +62,10 @@ public:
   // Returns the angle for a shape-like intertwiner (rectangles,
   // ellipses, etc.).
   virtual double getShapeAngle() const { return 0.0; }
+
+  // Returns the radius for each corner for a rectangle intertwiner when drawing
+  // rounded rectangles.
+  virtual int getCornerRadius() const { return 0; }
 };
 
 }} // namespace app::tools

src/app/tools/controllers.h

@@ -1,11 +1,18 @@
 // Aseprite
-// Copyright (C) 2019-2023  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
 
+#include "app/app.h"
+#include "app/pref/preferences.h"
 #include "app/snap_to_grid.h"
+#include "app/tools/controller.h"
+#include "app/tools/intertwine.h"
+#include "app/tools/tool.h"
+#include "app/tools/tool_loop.h"
+#include "app/tools/tool_loop_modifiers.h"
 #include "base/gcd.h"
 #include "base/pi.h"
 #include "fmt/format.h"
@@ -105,6 +112,72 @@ private:
   Stroke::Pt m_last;
 };
 
+class CornerRadius {
+public:
+  ToolLoop* loop() const { return m_loop; }
+  void loop(ToolLoop* loop) { m_loop = loop; }
+
+  void load()
+  {
+    auto* tool = App::instance()->activeTool();
+    m_pref = &Preferences::instance().tool(tool);
+    m_radius = m_pref->cornerRadius();
+  }
+
+  void save() { m_pref->cornerRadius.setValue(m_radius); }
+
+  bool isModifying() const { return m_modifying; }
+
+  void modifyRadius(Stroke& stroke, const Stroke::Pt& pt)
+  {
+    if (!m_modifying) {
+      m_lastRadius = std::min(m_radius, maxRadius(stroke));
+      m_modifying = true;
+    }
+
+    int dx = stroke[1].x - pt.x;
+    int dy = stroke[1].y - pt.y;
+    if (stroke[1].y < stroke[0].y)
+      dy = -dy;
+    if (stroke[1].x < stroke[0].x)
+      dx = -dx;
+
+    m_radius = std::max(0, m_lastRadius + dx + dy);
+
+    capRadius(stroke);
+  }
+
+  void stopModifying()
+  {
+    m_modifying = false;
+    m_lastRadius = m_radius;
+  }
+
+  bool hasRadius() const { return m_radius > 0; }
+
+  int radius() const { return m_radius; }
+
+  // Gets the corner radius limited by the maximum radius allowed by the stroke
+  // points.
+  int radius(const Stroke& stroke) const { return std::min(m_radius, maxRadius(stroke)); }
+
+  void radius(int r) { m_radius = r; }
+
+  void capRadius(Stroke& stroke) { m_radius = radius(stroke); }
+
+private:
+  static int maxRadius(const Stroke& stroke)
+  {
+    return std::min(ABS(stroke[1].x - stroke[0].x + 1), ABS(stroke[1].y - stroke[0].y + 1)) / 2;
+  }
+
+  ToolLoop* m_loop;
+  ToolPreferences* m_pref;
+  bool m_modifying = false;
+  int m_lastRadius = 0;
+  int m_radius = 0;
+};
+
 // Controls clicks for tools like line
 class TwoPointsController : public MoveOriginCapability {
 public:
@@ -117,6 +190,11 @@ public:
     m_first = m_center = pt;
     m_angle = 0.0;
 
+    m_cornerRadius.loop(loop);
+    if (loop->getIntertwine()->cornerRadiusSupport()) {
+      m_cornerRadius.load();
+    }
+
     stroke.addPoint(pt);
     stroke.addPoint(pt);
 
@@ -124,7 +202,14 @@ public:
       snapPointsToGridTiles(loop, stroke);
   }
 
-  bool releaseButton(Stroke& stroke, const Stroke::Pt& pt) override { return false; }
+  bool releaseButton(Stroke& stroke, const Stroke::Pt& pt) override
+  {
+    if (m_cornerRadius.loop() && m_cornerRadius.loop()->getIntertwine()->cornerRadiusSupport()) {
+      m_cornerRadius.capRadius(stroke);
+      m_cornerRadius.save();
+    }
+    return false;
+  }
 
   void movement(ToolLoop* loop, Stroke& stroke, const Stroke::Pt& pt) override
   {
@@ -135,6 +220,18 @@ public:
     if (MoveOriginCapability::isMovingOrigin(loop, stroke, pt))
       return;
 
+    if (loop->getIntertwine()->cornerRadiusSupport() &&
+        (int(loop->getModifiers()) & int(ToolLoopModifiers::kCornerRadius))) {
+      m_cornerRadius.modifyRadius(stroke, pt);
+      m_cornerRadius.save();
+      return;
+    }
+
+    if (m_cornerRadius.isModifying()) {
+      m_cornerRadius.stopModifying();
+      return;
+    }
+
     if (!loop->getIntertwine()->snapByAngle() &&
         int(loop->getModifiers()) & int(ToolLoopModifiers::kRotateShape)) {
       if ((int(loop->getModifiers()) & int(ToolLoopModifiers::kFromCenter))) {
@@ -277,11 +374,15 @@ public:
       text += fmt::format(" :angle: {:.1f}", 180.0 * angle / PI);
     }
 
+    if (m_cornerRadius.hasRadius() && loop->getIntertwine()->cornerRadiusSupport())
+      text += fmt::format(" :corner_radius: {}", m_cornerRadius.radius(stroke));
+
     // Aspect ratio at the end
     text += fmt::format(" :aspect_ratio: {}:{}", w / gcd, h / gcd);
   }
 
   double getShapeAngle() const override { return m_angle; }
+  int getCornerRadius() const override { return m_cornerRadius.radius(); }
 
 private:
   void snapPointsToGridTiles(ToolLoop* loop, Stroke& stroke)
@@ -312,6 +413,7 @@ private:
   Stroke::Pt m_first;
   Stroke::Pt m_center;
   double m_angle;
+  CornerRadius m_cornerRadius;
 };
 
 // Controls clicks for tools like polygon

src/app/tools/intertwine.cpp

@@ -18,6 +18,7 @@
 #include "app/tools/tool_loop.h"
 #include "base/pi.h"
 #include "doc/algo.h"
+#include "doc/algorithm/hline.h"
 #include "doc/layer.h"
 
 #include <cmath>

src/app/tools/intertwine.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2019-2021  Igara Studio S.A.
+// Copyright (C) 2019-2025  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -26,6 +26,8 @@ public:
   virtual ~Intertwine() {}
   virtual bool snapByAngle() { return false; }
   virtual void prepareIntertwine(ToolLoop* loop) {}
+  // Returns true if the implementation supports corner radius modification.
+  virtual bool cornerRadiusSupport() { return false; }
 
   // The given stroke must be relative to the cel origin.
   virtual void joinStroke(ToolLoop* loop, const Stroke& stroke) = 0;

src/app/tools/intertwiners.h

@@ -5,8 +5,19 @@
 // This program is distributed under the terms of
 // the End-User License Agreement for Aseprite.
 
+#include "app/tools/controller.h"
+#include "app/tools/intertwine.h"
+#include "app/tools/point_shape.h"
+#include "app/tools/tool_loop.h"
+#include "app/tools/tool_loop_modifiers.h"
 #include "base/pi.h"
+#include "doc/algo.h"
+#include "doc/algorithm/polygon.h"
 #include "doc/layer_tilemap.h"
+#include "gfx/point.h"
+#include <algorithm>
+
+using namespace gfx;
 
 namespace app { namespace tools {
 
@@ -160,6 +171,8 @@ public:
 
 class IntertwineAsRectangles : public Intertwine {
 public:
+  bool cornerRadiusSupport() override { return true; }
+
   void joinStroke(ToolLoop* loop, const Stroke& stroke) override
   {
     if (stroke.size() == 0)
@@ -183,22 +196,62 @@ public:
           std::swap(y1, y2);
 
         const double angle = loop->getController()->getShapeAngle();
+        const int cornerRadius = loop->getController()->getCornerRadius();
         if (ABS(angle) < 0.001) {
-          doPointshapeLineWithoutDynamics(x1, y1, x2, y1, loop);
+          int r = 0;
-          doPointshapeLineWithoutDynamics(x1, y2, x2, y2, loop);
+          if (cornerRadius > 0) {
+            int w = x2 - x1 + 1;
+            int h = y2 - y1 + 1;
+            r = std::min(w, std::min(h, 2 * cornerRadius)) / 2;
+            algo_sliced_circle(x1, y1, x2, y2, r, loop, (AlgoPixel)doPointshapePoint);
+          }
 
-          for (y = y1; y <= y2; y++) {
+          doPointshapeLineWithoutDynamics(x1 + r, y1, x2 - r, y1, loop);
+          doPointshapeLineWithoutDynamics(x1 + r, y2, x2 - r, y2, loop);
+
+          for (y = y1 + r; y <= y2 - r; y++) {
             doPointshapePoint(x1, y, loop);
             doPointshapePoint(x2, y, loop);
           }
         }
         else {
-          Stroke p = rotateRectangle(x1, y1, x2, y2, angle);
+          if (cornerRadius <= 0) {
-          int n = p.size();
+            Stroke p = rotateRectangle(x1, y1, x2, y2, angle);
-          for (int i = 0; i + 1 < n; ++i) {
+            int n = p.size();
-            doPointshapeLine(p[i], p[i + 1], loop);
+            for (int i = 0; i + 1 < n; ++i) {
+              doPointshapeLine(p[i], p[i + 1], loop);
+            }
+            doPointshapeLine(p[n - 1], p[0], loop);
+          }
+          else {
+            int w = x2 - x1 + 1;
+            int h = y2 - y1 + 1;
+            int r = std::min(w, std::min(h, 2 * cornerRadius)) / 2;
+            Stroke p = rotateRectangle(x1, y1, x2, y2, angle, r);
+            int n = p.size();
+            for (int i = 0; i + 1 < n; i += 3) {
+              doPointshapeLine(p[i], p[i + 1], loop);
+            }
+            const double ang_minus_PI_2 = base::fmod_radians(angle - PI / 2);
+            const double ang_plus_PI_2 = base::fmod_radians(angle + PI / 2);
+            const double ang_plus_PI = base::fmod_radians(angle + PI);
+            algo_arc(p[2].x, p[2].y, ang_minus_PI_2, angle, r, loop, (AlgoPixel)doPointshapePoint);
+            algo_arc(p[5].x, p[5].y, angle, ang_plus_PI_2, r, loop, (AlgoPixel)doPointshapePoint);
+            algo_arc(p[8].x,
+                     p[8].y,
+                     ang_plus_PI_2,
+                     ang_plus_PI,
+                     r,
+                     loop,
+                     (AlgoPixel)doPointshapePoint);
+            algo_arc(p[11].x,
+                     p[11].y,
+                     ang_plus_PI,
+                     ang_minus_PI_2,
+                     r,
+                     loop,
+                     (AlgoPixel)doPointshapePoint);
           }
-          doPointshapeLine(p[n - 1], p[0], loop);
         }
       }
     }
@@ -224,14 +277,66 @@ public:
         std::swap(y1, y2);
 
       const double angle = loop->getController()->getShapeAngle();
+      const int cornerRadius = loop->getController()->getCornerRadius();
       if (ABS(angle) < 0.001) {
-        for (y = y1; y <= y2; y++)
+        int r = 0;
+        if (cornerRadius > 0) {
+          int w = x2 - x1 + 1;
+          int h = y2 - y1 + 1;
+          r = std::min(w, std::min(h, 2 * cornerRadius)) / 2;
+          algo_sliced_circlefill(x1, y1, x2, y2, r, loop, (AlgoHLine)doPointshapeHline);
+
+          for (y = y1; y < y1 + r; y++)
+            doPointshapeLineWithoutDynamics(x1 + r, y, x2 - r, y, loop);
+          for (y = y2 - r + 1; y <= y2; y++)
+            doPointshapeLineWithoutDynamics(x1 + r, y, x2 - r, y, loop);
+        }
+
+        for (y = y1 + r; y <= y2 - r; y++)
           doPointshapeLineWithoutDynamics(x1, y, x2, y, loop);
       }
       else {
-        Stroke p = rotateRectangle(x1, y1, x2, y2, angle);
+        if (cornerRadius <= 0) {
-        auto v = p.toXYInts();
+          Stroke p = rotateRectangle(x1, y1, x2, y2, angle);
-        doc::algorithm::polygon(v.size() / 2, &v[0], loop, (AlgoHLine)doPointshapeHline);
+          auto v = p.toXYInts();
+          doc::algorithm::polygon(v.size() / 2, &v[0], loop, (AlgoHLine)doPointshapeHline);
+        }
+        else {
+          int w = x2 - x1 + 1;
+          int h = y2 - y1 + 1;
+          int r = std::min(w, std::min(h, 2 * cornerRadius)) / 2;
+          Stroke p = rotateRectangle(x1, y1, x2, y2, angle, cornerRadius);
+          auto v = p.toXYInts();
+          doc::algorithm::polygon(v.size() / 2, &v[0], loop, (AlgoHLine)doPointshapeHline);
+          algo_sliced_circlefill(p[2].x - r,
+                                 p[2].y - r,
+                                 p[2].x + r,
+                                 p[2].y + r,
+                                 r,
+                                 loop,
+                                 (AlgoHLine)doPointshapeHline);
+          algo_sliced_circlefill(p[5].x - r,
+                                 p[5].y - r,
+                                 p[5].x + r,
+                                 p[5].y + r,
+                                 r,
+                                 loop,
+                                 (AlgoHLine)doPointshapeHline);
+          algo_sliced_circlefill(p[8].x - r,
+                                 p[8].y - r,
+                                 p[8].x + r,
+                                 p[8].y + r,
+                                 r,
+                                 loop,
+                                 (AlgoHLine)doPointshapeHline);
+          algo_sliced_circlefill(p[11].x - r,
+                                 p[11].y - r,
+                                 p[11].x + r,
+                                 p[11].y + r,
+                                 r,
+                                 loop,
+                                 (AlgoHLine)doPointshapeHline);
+        }
       }
     }
   }
@@ -274,6 +379,54 @@ private:
     stroke.addPoint(Point(cx - a * c + b * s, cy + a * s + b * c));
     return stroke;
   }
+
+  // Returns a stroke with the rotated points of a rectangle making room for a
+  // rounded corner of the specified radius, and with points where the center of
+  // each corner must be.
+  static Stroke rotateRectangle(int x1, int y1, int x2, int y2, double angle, int cornerRadius)
+  {
+    cornerRadius = std::max(cornerRadius, 0);
+
+    int cx = (x1 + x2) / 2;
+    int cy = (y1 + y2) / 2;
+    int a = ((x2 - x1) / 2);
+    int b = ((y2 - y1) / 2);
+    int ai = a - cornerRadius;
+    int bi = b - cornerRadius;
+
+    double s = -std::sin(angle);
+    double c = std::cos(angle);
+
+    Stroke stroke;
+    // Top segment
+    stroke.addPoint(Point(cx - ai * c - b * s, cy + ai * s - b * c));
+    stroke.addPoint(Point(cx + ai * c - b * s, cy - ai * s - b * c));
+
+    // Center for top-right corner
+    stroke.addPoint(Point(cx + ai * c - bi * s, cy - ai * s - bi * c));
+
+    // Right segment
+    stroke.addPoint(Point(cx + a * c - bi * s, cy - a * s - bi * c));
+    stroke.addPoint(Point(cx + a * c + bi * s, cy - a * s + bi * c));
+
+    // Center for bottom-right corner
+    stroke.addPoint(Point(cx + ai * c + bi * s, cy - ai * s + bi * c));
+
+    // Bottom segment
+    stroke.addPoint(Point(cx + ai * c + b * s, cy - ai * s + b * c));
+    stroke.addPoint(Point(cx - ai * c + b * s, cy + ai * s + b * c));
+
+    // Center for bottom-left corner
+    stroke.addPoint(Point(cx - ai * c + bi * s, cy + ai * s + bi * c));
+
+    // Left segment
+    stroke.addPoint(Point(cx - a * c + bi * s, cy + a * s + bi * c));
+    stroke.addPoint(Point(cx - a * c - bi * s, cy + a * s - bi * c));
+
+    // Center for top-left corner
+    stroke.addPoint(Point(cx - ai * c - bi * s, cy + ai * s - bi * c));
+    return stroke;
+  }
 };
 
 class IntertwineAsEllipses : public Intertwine {

src/app/tools/tool_loop_modifiers.h

@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2018  Igara Studio S.A.
+// Copyright (C) 2018-2025  Igara Studio S.A.
 // Copyright (C) 2016-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -21,6 +21,7 @@ enum class ToolLoopModifiers {
   kSquareAspect = 0x00000020,
   kFromCenter = 0x00000040,
   kRotateShape = 0x00000080,
+  kCornerRadius = 0x00000100,
 };
 
 }} // namespace app::tools

src/app/ui/context_bar.cpp

@@ -30,6 +30,7 @@
 #include "app/tools/controller.h"
 #include "app/tools/ink.h"
 #include "app/tools/ink_type.h"
+#include "app/tools/intertwine.h"
 #include "app/tools/point_shape.h"
 #include "app/tools/tool.h"
 #include "app/tools/tool_box.h"
@@ -349,6 +350,24 @@ protected:
   bool m_lock;
 };
 
+class ContextBar::CornerRadiusField : public IntEntry {
+public:
+  CornerRadiusField() : IntEntry(0, 999) { setSuffix("px"); }
+
+private:
+  void onValueChange() override
+  {
+    if (g_updatingFromCode)
+      return;
+
+    IntEntry::onValueChange();
+    base::ScopedValue lockFlag(g_updatingFromCode, true);
+
+    Tool* tool = App::instance()->activeTool();
+    Preferences::instance().tool(tool).cornerRadius.setValue(getValue());
+  }
+};
+
 class ContextBar::ToleranceField : public IntEntry {
 public:
   ToleranceField() : IntEntry(0, 255) {}
@@ -1919,6 +1938,8 @@ ContextBar::ContextBar(TooltipManager* tooltipManager, ColorBar* colorBar)
   addChild(m_brushBack = new BrushBackField);
   addChild(m_brushType = new BrushTypeField(this));
   addChild(m_brushSize = new BrushSizeField());
+  addChild(m_cornerRadius = new CornerRadiusField());
+  m_cornerRadius->useSlider(false);
   addChild(m_brushAngle = new BrushAngleField(m_brushType));
   addChild(m_brushPatternField = new BrushPatternField());
 
@@ -2074,6 +2095,11 @@ void ContextBar::onBrushSizeChange()
   updateForActiveTool();
 }
 
+void ContextBar::onCornerRadiusChange(int value)
+{
+  m_cornerRadius->setValue(value);
+}
+
 void ContextBar::onBrushAngleChange()
 {
   if (m_activeBrush->type() != kImageBrushType)
@@ -2164,6 +2190,9 @@ void ContextBar::updateForTool(tools::Tool* tool)
     m_freehandAlgoConn = toolPref->freehandAlgorithm.AfterChange.connect(
       [this] { onToolSetFreehandAlgorithm(); });
     m_contiguousConn = toolPref->contiguous.AfterChange.connect([this] { onToolSetContiguous(); });
+    m_cornerRadius->setValue(toolPref->cornerRadius());
+    m_cornerRadiusConn = toolPref->cornerRadius.AfterChange.connect(
+      [this](const int value) { onCornerRadiusChange(value); });
   }
 
   if (tool)
@@ -2241,6 +2270,9 @@ void ContextBar::updateForTool(tools::Tool* tool)
   const bool isFloodfill = tool && (tool->getPointShape(0)->isFloodFill() ||
                                     tool->getPointShape(1)->isFloodFill());
 
+  const bool hasCornerRadius = tool && (tool->getIntertwine(0)->cornerRadiusSupport() ||
+                                        tool->getIntertwine(1)->cornerRadiusSupport());
+
   // True if the current tool needs tolerance options
   const bool hasTolerance = tool && (tool->getPointShape(0)->isFloodFill() ||
                                      tool->getPointShape(1)->isFloodFill());
@@ -2276,6 +2308,7 @@ void ContextBar::updateForTool(tools::Tool* tool)
   m_brushSize->setVisible(supportOpacity && !isFloodfill && !hasImageBrush);
   m_brushAngle->setVisible(supportOpacity && !isFloodfill && !hasImageBrush && hasBrushWithAngle);
   m_brushPatternField->setVisible(supportOpacity && hasImageBrush && !withDithering);
+  m_cornerRadius->setVisible(hasCornerRadius);
   m_inkType->setVisible(hasInk);
   m_inkOpacityLabel->setVisible(showOpacity);
   m_inkOpacity->setVisible(showOpacity);
@@ -2637,6 +2670,7 @@ void ContextBar::setupTooltips(TooltipManager* tooltipManager)
   tooltipManager->addTooltipFor(m_brushType->at(0), Strings::context_bar_brush_type(), BOTTOM);
   tooltipManager->addTooltipFor(m_brushSize, Strings::context_bar_brush_size(), BOTTOM);
   tooltipManager->addTooltipFor(m_brushAngle, Strings::context_bar_brush_angle(), BOTTOM);
+  tooltipManager->addTooltipFor(m_cornerRadius, Strings::context_bar_corner_radius(), BOTTOM);
   tooltipManager->addTooltipFor(m_inkType->at(0), Strings::context_bar_ink(), BOTTOM);
   tooltipManager->addTooltipFor(m_inkOpacity, Strings::context_bar_opacity(), BOTTOM);
   tooltipManager->addTooltipFor(m_inkShades->at(0), Strings::context_bar_shades(), BOTTOM);

src/app/ui/context_bar.h

@@ -131,6 +131,7 @@ protected:
 private:
   void onBrushSizeChange();
   void onBrushAngleChange();
+  void onCornerRadiusChange(int value);
   void onSymmetryModeChange();
   void onFgOrBgColorChange(doc::Brush::ImageColor imageColor);
   void onOpacityRangeChange();
@@ -168,6 +169,7 @@ private:
   class DynamicsField;
   class FreehandAlgorithmField;
   class BrushPatternField;
+  class CornerRadiusField;
   class EyedropperField;
   class DropPixelsField;
   class AutoSelectLayerField;
@@ -181,6 +183,7 @@ private:
   BrushTypeField* m_brushType;
   BrushAngleField* m_brushAngle;
   BrushSizeField* m_brushSize;
+  CornerRadiusField* m_cornerRadius;
   ui::Label* m_toleranceLabel;
   ToleranceField* m_tolerance;
   ContiguousField* m_contiguous;
@@ -224,6 +227,7 @@ private:
   obs::scoped_connection m_opacityConn;
   obs::scoped_connection m_freehandAlgoConn;
   obs::scoped_connection m_contiguousConn;
+  obs::scoped_connection m_cornerRadiusConn;
 };
 
 } // namespace app

src/app/ui/editor/editor.cpp

@@ -1834,7 +1834,7 @@ void Editor::updateToolLoopModifiersIndicators(const bool firstFromMouseDown)
         // square-aspect/rotation/etc. only when the user presses the
         // modifier key again in the ToolLoop (and not before starting
         // the loop). So Alt+selection will add a selection, but
-        // willn't start the square-aspect until we press Alt key
+        // won't start the square-aspect until we press Alt key
         // again, or Alt+Shift+selection tool will subtract the
         // selection but will not start the rotation until we release
         // and press the Alt key again.
@@ -1847,6 +1847,8 @@ void Editor::updateToolLoopModifiersIndicators(const bool firstFromMouseDown)
             modifiers |= int(tools::ToolLoopModifiers::kFromCenter);
           if (int(action & KeyAction::RotateShape))
             modifiers |= int(tools::ToolLoopModifiers::kRotateShape);
+          if (int(action & KeyAction::CornerRadius))
+            modifiers |= int(tools::ToolLoopModifiers::kCornerRadius);
         }
       }
 

src/app/ui/key.cpp

@@ -110,6 +110,10 @@ const std::vector<KeyShortcutAction>& actions()
        I18N_KEY(rotate_shape),
        app::KeyAction::RotateShape,
        app::KeyContext::ShapeTool            },
+      { "CornerRadius",
+       I18N_KEY(corner_radius),
+       app::KeyAction::CornerRadius,
+       app::KeyContext::ShapeTool            },
       { "LeftMouseButton",
        I18N_KEY(trigger_left_mouse_button),
        app::KeyAction::LeftMouseButton,
@@ -392,6 +396,7 @@ Key::Key(const KeyAction action, const KeyContext keyContext)
     case KeyAction::RotateShape:               m_keycontext = KeyContext::ShapeTool; break;
     case KeyAction::LeftMouseButton:
     case KeyAction::RightMouseButton:          m_keycontext = KeyContext::Any; break;
+    case KeyAction::CornerRadius:              m_keycontext = KeyContext::ShapeTool; break;
   }
 }
 

src/app/ui/key.h

@@ -64,6 +64,7 @@ enum class KeyAction {
   AngleSnapFromLastPoint = 0x00010000,
   RotateShape = 0x00020000,
   FineControl = 0x00040000,
+  CornerRadius = 0x00080000,
 };
 
 enum class WheelAction {

src/doc/algo.cpp

@@ -1,5 +1,5 @@
 // Aseprite Document Library
-// Copyright (c) 2018-2022 Igara Studio S.A.
+// Copyright (c) 2018-2025 Igara Studio S.A.
 // Copyright (c) 2001-2018 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -12,6 +12,7 @@
 #include "doc/algo.h"
 
 #include "base/debug.h"
+#include "base/pi.h"
 
 #include <algorithm>
 #include <cmath>
@@ -180,6 +181,167 @@ void algo_line_continuous_with_fix_for_line_brush(int x0,
   }
 }
 
+// Circle code based on Alois Zingl work released under the MIT
+// license http://members.chello.at/easyfilter/bresenham.html
+//
+// Adapted for Aseprite by Igara Studio S.A.
+//
+// Draws a circle of the specified radius divided in 4 slices, adjusting each
+// slice inside the specified rectangle.
+//            |--r --|
+//
+//  x1,y1 --> *   OOO          OOO
+//              O                  O
+//             O                    O
+//
+//
+//
+//          T  O                    O
+//        r |   O                  O
+//          _     OOO          OOO   * <-- x2,y2
+//
+// If the rectangle is smaller than the circle, it doesn't make any clipping.
+void algo_sliced_circle(int x1, int y1, int x2, int y2, int r, void* data, AlgoPixel proc)
+{
+  int x = -r, y = 0, err = 2 - 2 * r; /* II. Quadrant */
+  const int r0 = r;
+  do {
+    proc(x2 - r0 - x, y2 - r0 + y, data); /*   I. Quadrant */
+    proc(x1 + r0 - y, y2 - r0 - x, data); /*  II. Quadrant */
+    proc(x1 + r0 + x, y1 + r0 - y, data); /* III. Quadrant */
+    proc(x2 - r0 + y, y1 + r0 + x, data); /*  IV. Quadrant */
+    r = err;
+    if (r <= y)
+      err += ++y * 2 + 1; /* e_xy+e_y < 0 */
+    if (r > x || err > y)
+      err += ++x * 2 + 1; /* e_xy+e_x > 0 or no 2nd y-step */
+  } while (x < 0);
+}
+
+// Same as algo_sliced_circle but with the parts filled.
+void algo_sliced_circlefill(int x1, int y1, int x2, int y2, int r, void* data, AlgoHLine proc)
+{
+  int x = -r, y = 0, err = 2 - 2 * r; /* II. Quadrant */
+  const int r0 = r;
+  do {
+    proc(x2 - r0, y2 - r0 + y, x2 - r0 - x, data); /*   I. Quadrant */
+    proc(x1 + r0 - y, y2 - r0 - x, x1 + r0, data); /*  II. Quadrant */
+    proc(x1 + r0 + x, y1 + r0 - y, x1 + r0, data); /* III. Quadrant */
+    proc(x2 - r0, y1 + r0 + x, x2 - r0 + y, data); /*  IV. Quadrant */
+    r = err;
+    if (r <= y)
+      err += ++y * 2 + 1; /* e_xy+e_y < 0 */
+    if (r > x || err > y)
+      err += ++x * 2 + 1; /* e_xy+e_x > 0 or no 2nd y-step */
+  } while (x < 0);
+}
+
+void algo_arc(int xm, int ym, double sa, double ea, int r, void* data, AlgoPixel proc)
+{
+  int sx = std::cos(sa) * r;
+  int ex = std::cos(ea) * r;
+
+  int startQuadrant;
+  if (sa <= 0 && sa > -PI / 2) {
+    startQuadrant = 4;
+  }
+  else if (sa <= -PI / 2 && sa >= -PI) {
+    startQuadrant = 3;
+  }
+  else if (sa > 0 && sa < PI / 2) {
+    startQuadrant = 1;
+  }
+  else {
+    startQuadrant = 2;
+  }
+
+  int endQuadrant;
+  if (ea <= 0 && ea > -PI / 2) {
+    endQuadrant = 4;
+  }
+  else if (ea <= -PI / 2 && ea >= -PI) {
+    endQuadrant = 3;
+  }
+  else if (ea > 0 && ea < PI / 2) {
+    endQuadrant = 1;
+  }
+  else {
+    endQuadrant = 2;
+  }
+
+  // If start angle and end angle falls in the same quadrant we have to determine
+  // if we have to include the other quadrants or not since the arc is determined
+  // from start angle to end angle in clockwise direction.
+  bool includeQuadrant[4] = { false, false, false, false };
+  if (startQuadrant == endQuadrant) {
+    // If start angle is greater than end angle, include all quadrants for drawing
+    if (sa > ea) {
+      includeQuadrant[0] = true;
+      includeQuadrant[1] = true;
+      includeQuadrant[2] = true;
+      includeQuadrant[3] = true;
+    }
+    else {
+      // start angle is less to or equal to end angle then only include one quadrant
+      // for drawing.
+      includeQuadrant[startQuadrant - 1] = true;
+    }
+  }
+  else {
+    for (int i = startQuadrant - 1; i < startQuadrant - 1 + 4; ++i) {
+      int q = i % 4;
+      includeQuadrant[q] = true;
+      if (q == endQuadrant - 1)
+        break;
+    }
+  }
+
+  int x = -r, y = 0, err = 2 - 2 * r; /* II. Quadrant */
+  do {
+    if (includeQuadrant[0]) {
+      if ((startQuadrant != 1 && endQuadrant != 1) ||
+          (startQuadrant == 1 && endQuadrant != 1 && -x <= sx) ||
+          (startQuadrant != 1 && endQuadrant == 1 && -x >= ex) ||
+          (startQuadrant == 1 && endQuadrant == 1 &&
+           ((sa <= ea && -x <= sx && -x >= ex) || (sa > ea && (-x <= sx || -x >= ex)))))
+        proc(xm - x, ym + y, data); /*   I. Quadrant */
+    }
+
+    if (includeQuadrant[1]) {
+      if ((startQuadrant != 2 && endQuadrant != 2) ||
+          (startQuadrant == 2 && endQuadrant != 2 && -y <= sx) ||
+          (startQuadrant != 2 && endQuadrant == 2 && -y >= ex) ||
+          (startQuadrant == 2 && endQuadrant == 2 &&
+           ((sa <= ea && -y <= sx && -y >= ex) || (sa > ea && (-y <= sx || -y >= ex)))))
+        proc(xm - y, ym - x, data); /*  II. Quadrant */
+    }
+
+    if (includeQuadrant[2]) {
+      if ((startQuadrant != 3 && endQuadrant != 3) ||
+          (startQuadrant == 3 && endQuadrant != 3 && x >= sx) ||
+          (startQuadrant != 3 && endQuadrant == 3 && x <= ex) ||
+          (startQuadrant == 3 && endQuadrant == 3 &&
+           ((sa <= ea && -x <= -sx && -x >= -ex) || (sa > ea && (-x <= -sx || -x >= -ex)))))
+        proc(xm + x, ym - y, data); /* III. Quadrant */
+    }
+
+    if (includeQuadrant[3]) {
+      if ((startQuadrant != 4 && endQuadrant != 4) ||
+          (startQuadrant == 4 && endQuadrant != 4 && y >= sx) ||
+          (startQuadrant != 4 && endQuadrant == 4 && y <= ex) ||
+          (startQuadrant == 4 && endQuadrant == 4 &&
+           ((sa <= ea && y >= sx && y <= ex) || (sa > ea && (y >= sx || y <= ex)))))
+        proc(xm + y, ym + x, data); /*  IV. Quadrant */
+    }
+
+    r = err;
+    if (r <= y)
+      err += ++y * 2 + 1; /* e_xy+e_y < 0 */
+    if (r > x || err > y)
+      err += ++x * 2 + 1; /* e_xy+e_x > 0 or no 2nd y-step */
+  } while (x < 0);
+}
+
 static int adjust_ellipse_args(int& x0, int& y0, int& x1, int& y1, int& hPixels, int& vPixels)
 {
   // hPixels : straight horizontal pixels added to mid region of the ellipse.

src/doc/algo.h

@@ -1,5 +1,5 @@
 // Aseprite Document Library
-// Copyright (C) 2018-2021  Igara Studio S.A.
+// Copyright (C) 2018-2025  Igara Studio S.A.
 // Copyright (c) 2001-2018 David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -48,6 +48,12 @@ void algo_line_continuous_with_fix_for_line_brush(int x1,
                                                   void* data,
                                                   AlgoPixel proc);
 
+void algo_sliced_circle(int x1, int y1, int x2, int y2, int r, void* data, AlgoPixel proc);
+
+void algo_sliced_circlefill(int x1, int y1, int x2, int y2, int r, void* data, AlgoHLine proc);
+
+void algo_arc(int xm, int ym, double sa, double ea, int r, void* data, AlgoPixel proc);
+
 void algo_ellipse(int x1,
                   int y1,
                   int x2,

src/ui/int_entry.cpp

@@ -175,43 +175,45 @@ void IntEntry::openPopup()
 {
   m_slider->setValue(getValue());
 
-  // We weren't able to reproduce it, but there are crash reports
+  if (m_useSlider) {
-  // where this openPopup() function is called and the popup is still
+    // We weren't able to reproduce it, but there are crash reports
-  // alive, with the slider inside (we have to remove it before
+    // where this openPopup() function is called and the popup is still
-  // resetting m_popupWindow pointer to avoid deleting the slider
+    // alive, with the slider inside (we have to remove it before
-  // pointer).
+    // resetting m_popupWindow pointer to avoid deleting the slider
-  removeSlider();
+    // pointer).
+    removeSlider();
 
-  m_popupWindow = std::make_unique<TransparentPopupWindow>(
+    m_popupWindow = std::make_unique<TransparentPopupWindow>(
-    PopupWindow::ClickBehavior::CloseOnClickInOtherWindow);
+      PopupWindow::ClickBehavior::CloseOnClickInOtherWindow);
-  m_popupWindow->setAutoRemap(false);
+    m_popupWindow->setAutoRemap(false);
-  m_popupWindow->addChild(m_slider.get());
+    m_popupWindow->addChild(m_slider.get());
-  m_popupWindow->Close.connect(&IntEntry::onPopupClose, this);
+    m_popupWindow->Close.connect(&IntEntry::onPopupClose, this);
 
-  fit_bounds(display(),
+    fit_bounds(display(),
-             m_popupWindow.get(),
+               m_popupWindow.get(),
-             gfx::Rect(0, 0, 128 * guiscale(), m_popupWindow->sizeHint().h),
+               gfx::Rect(0, 0, 128 * guiscale(), m_popupWindow->sizeHint().h),
-             [this](const gfx::Rect& workarea,
+               [this](const gfx::Rect& workarea,
-                    gfx::Rect& rc,
+                      gfx::Rect& rc,
-                    std::function<gfx::Rect(Widget*)> getWidgetBounds) {
+                      std::function<gfx::Rect(Widget*)> getWidgetBounds) {
-               Rect entryBounds = getWidgetBounds(this);
+                 Rect entryBounds = getWidgetBounds(this);
 
-               rc.x = entryBounds.x;
+                 rc.x = entryBounds.x;
-               rc.y = entryBounds.y2();
+                 rc.y = entryBounds.y2();
 
-               if (rc.x2() > workarea.x2())
+                 if (rc.x2() > workarea.x2())
-                 rc.x = rc.x - rc.w + entryBounds.w;
+                   rc.x = rc.x - rc.w + entryBounds.w;
 
-               if (rc.y2() > workarea.y2())
+                 if (rc.y2() > workarea.y2())
-                 rc.y = entryBounds.y - entryBounds.h;
+                   rc.y = entryBounds.y - entryBounds.h;
 
-               m_popupWindow->setBounds(rc);
+                 m_popupWindow->setBounds(rc);
-             });
+               });
 
-  Region rgn(m_popupWindow->boundsOnScreen().createUnion(boundsOnScreen()));
+    Region rgn(m_popupWindow->boundsOnScreen().createUnion(boundsOnScreen()));
-  m_popupWindow->setHotRegion(rgn);
+    m_popupWindow->setHotRegion(rgn);
 
-  m_popupWindow->openWindow();
+    m_popupWindow->openWindow();
+  }
 }
 
 void IntEntry::closePopup()

src/ui/int_entry.h

@@ -27,6 +27,10 @@ public:
   virtual int getValue() const;
   virtual void setValue(int value);
 
+  // If useSlider is false, then it won't show the slider popup to change its
+  // value.
+  void useSlider(bool useSlider) { m_useSlider = useSlider; }
+
 protected:
   bool onProcessMessage(Message* msg) override;
   void onInitTheme(InitThemeEvent& ev) override;
@@ -42,6 +46,8 @@ protected:
   int m_max;
   std::unique_ptr<PopupWindow> m_popupWindow;
   bool m_changeFromSlider;
+  // If true a slider can be used to modify the value.
+  bool m_useSlider = true;
   std::unique_ptr<Slider> m_slider;
 
 private: