applyPropertyPatch

Полностью удалены модель, инструменты, рендеринг и связанные UI-элементы для фигуры "Дуга", поскольку она не была реализована в системе.
Также обновлены иконки для инструментов "Линия" и "Ломаная линия".

src/Canvas.zig

@@ -116,6 +116,7 @@ fn redraw(self: *Canvas) !void {
     }
     self._last_redraw_time_ms = std.time.milliTimestamp();
     self.frame_index += 1;
+    self.redraw_throttle_ms = @max(1, @as(u32, @intCast(self.render_engine.getStats().render_time_ns / std.time.ns_per_ms / 3)));
 }
 
 pub fn exampleReset(self: *Canvas) !void {

src/icons.zig

@@ -1,9 +1,8 @@
 const dvui = @import("dvui");
 
-pub const line = dvui.entypo.line_graph;
+pub const line = dvui.entypo.flow_line;
 pub const ellipse = dvui.entypo.circle;
-pub const arc = dvui.entypo.loop;
-pub const broken = dvui.entypo.flow_line;
+pub const broken = dvui.entypo.line_graph;
 pub const trash = dvui.entypo.trash;
 pub const cross = dvui.entypo.cross;
 pub const plus = dvui.entypo.plus;

src/models/Object.zig

@@ -6,7 +6,6 @@ const Object = @This();
 pub const ShapeKind = enum {
     line,
     ellipse,
-    arc,
     broken,
 };
 
@@ -45,7 +44,7 @@ pub fn getProperty(self: Object, tag: std.meta.Tag(PropertyData)) ?*const Proper
 pub fn setProperty(self: *Object, allocator: std.mem.Allocator, prop: Property) !void {
     for (self.properties.items, 0..) |*p, i| {
         if (std.meta.activeTag(p.data) == std.meta.activeTag(prop.data)) {
-            if (p.data == .points) p.data.points.deinit(allocator);
+            if (p.data == .points) allocator.free(p.data.points);
             self.properties.items[i] = prop;
             return;
         }

src/models/Property.zig

@@ -19,7 +19,8 @@ pub const Data = union(enum) {
     arc_percent: f32,
     end_point: Point2_f,
 
-    points: std.ArrayList(Point2_f),
+    /// Владеет памятью; при deinit/clone — free/duplicate.
+    points: []const Point2_f,
     /// Замкнутый контур (для ломаной: отрезок последняя–первая точка + заливка).
     closed: bool,
 
@@ -39,7 +40,7 @@ pub const Property = struct {
 
     pub fn deinit(self: *Property, allocator: std.mem.Allocator) void {
         switch (self.data) {
-            .points => |*list| list.deinit(allocator),
+            .points => |slice| allocator.free(slice),
             else => {},
         }
         self.* = undefined;
@@ -47,9 +48,13 @@ pub const Property = struct {
 
     pub fn clone(self: Property, allocator: std.mem.Allocator) !Property {
         return switch (self.data) {
-            .points => |list| .{
+            .points => |slice| .{
                 .data = .{
-                    .points = try list.clone(allocator),
+                    .points = blk: {
+                        const copy = try allocator.alloc(Point2_f, slice.len);
+                        @memcpy(copy, slice);
+                        break :blk copy;
+                    },
                 },
             },
             else => .{ .data = self.data },

src/models/shape/arc.zig

@@ -1,23 +0,0 @@
-const std = @import("std");
-const Object = @import("../Object.zig");
-const PropertyData = @import("../Property.zig").Data;
-const Rect_f = @import("../basic_models.zig").Rect_f;
-const shape_mod = @import("shape.zig");
-
-/// Теги обязательных свойств (arc не реализован).
-pub fn getRequiredTags() []const std.meta.Tag(PropertyData) {
-    return &[_]std.meta.Tag(PropertyData){};
-}
-
-/// Добавляет свойства по умолчанию для дуги.
-pub fn appendDefaultShapeProperties(allocator: std.mem.Allocator, obj: *Object) !void {
-    _ = allocator;
-    _ = obj;
-    return error.ArcNotImplemented;
-}
-
-/// Локальные границы дуги (не реализовано).
-pub fn getLocalBounds(obj: *const Object) !Rect_f {
-    try shape_mod.ensure(obj, .arc);
-    return error.ArcNotImplemented;
-}

src/models/shape/broken.zig

@@ -6,49 +6,15 @@ const Point2_f = @import("../basic_models.zig").Point2_f;
 const Rect_f = @import("../basic_models.zig").Rect_f;
 const shape_mod = @import("shape.zig");
 
-/// Точки ломаной по умолчанию.
-pub const default_points = [_]Point2_f{
+/// Свойства фигуры по умолчанию (добавляются к общим). points — слайс на статический массив.
+pub const default_shape_properties_points = [_]Point2_f{
     .{ .x = 0, .y = 0 },
     .{ .x = 80, .y = 0 },
     .{ .x = 80, .y = 60 },
 };
-
-/// Теги обязательных свойств.
-pub fn getRequiredTags() []const std.meta.Tag(PropertyData) {
-    return &[_]std.meta.Tag(PropertyData){
-        .points,
-    };
-}
-
-/// Добавляет к объекту свойства по умолчанию для ломаной.
-pub fn appendDefaultShapeProperties(allocator: std.mem.Allocator, obj: *Object) !void {
-    var points = std.ArrayList(Point2_f).empty;
-    try points.appendSlice(allocator, &default_points);
-    try obj.properties.append(allocator, .{ .data = .{ .points = points } });
-    try obj.properties.append(allocator, .{ .data = .{ .closed = false } });
-    try obj.properties.append(allocator, .{ .data = .{ .filled = true } });
-    try obj.properties.append(allocator, .{ .data = .{ .fill_rgba = obj.getProperty(.stroke_rgba).?.stroke_rgba } });
-}
-
-/// Локальные границы: AABB по точкам.
-pub fn getLocalBounds(obj: *const Object) !Rect_f {
-    try shape_mod.ensure(obj, .broken);
-    const p = obj.getProperty(.points).?;
-    if (p.points.items.len == 0) return error.EmptyPoints;
-    var min_x: f32 = p.points.items[0].x;
-    var max_x: f32 = min_x;
-    var min_y: f32 = p.points.items[0].y;
-    var max_y: f32 = min_y;
-    for (p.points.items[1..]) |pt| {
-        min_x = @min(min_x, pt.x);
-        max_x = @max(max_x, pt.x);
-        min_y = @min(min_y, pt.y);
-        max_y = @max(max_y, pt.y);
-    }
-    return .{
-        .x = min_x,
-        .y = min_y,
-        .w = max_x - min_x,
-        .h = max_y - min_y,
-    };
-}
+pub const default_shape_properties = [_]Property{
+    .{ .data = .{ .points = &default_shape_properties_points } },
+    .{ .data = .{ .closed = false } },
+    .{ .data = .{ .filled = true } },
+    .{ .data = .{ .fill_rgba = 0x000000FF } },
+};

src/models/shape/ellipse.zig

@@ -1,34 +1,14 @@
 const std = @import("std");
 const Object = @import("../Object.zig");
 const Property = @import("../Property.zig").Property;
-const PropertyData = @import("../Property.zig").Data;
 const Rect_f = @import("../basic_models.zig").Rect_f;
 const shape_mod = @import("shape.zig");
 
-/// Свойства фигуры по умолчанию.
+/// Свойства фигуры по умолчанию (добавляются к общим).
 pub const default_shape_properties = [_]Property{
     .{ .data = .{ .radii = .{ .x = 50, .y = 50 } } },
     .{ .data = .{ .arc_percent = 100.0 } },
+    .{ .data = .{ .closed = true } },
+    .{ .data = .{ .filled = false } },
+    .{ .data = .{ .fill_rgba = 0x000000FF } },
 };
-
-/// Теги обязательных свойств.
-pub fn getRequiredTags() []const std.meta.Tag(PropertyData) {
-    return &([_]std.meta.Tag(PropertyData){std.meta.activeTag(default_shape_properties[0].data)});
-}
-
-/// Добавляет к объекту свойства по умолчанию для эллипса.
-pub fn appendDefaultShapeProperties(allocator: std.mem.Allocator, obj: *Object) !void {
-    for (default_shape_properties) |prop| try obj.properties.append(allocator, prop);
-}
-
-/// Локальные границы эллипса: [-radii.x, -radii.y] .. [radii.x, radii.y].
-pub fn getLocalBounds(obj: *const Object) !Rect_f {
-    try shape_mod.ensure(obj, .ellipse);
-    const r = obj.getProperty(.radii).?;
-    return .{
-        .x = -r.radii.x,
-        .y = -r.radii.y,
-        .w = 2 * r.radii.x,
-        .h = 2 * r.radii.y,
-    };
-}

src/models/shape/line.zig

@@ -1,37 +1,10 @@
 const std = @import("std");
 const Object = @import("../Object.zig");
 const Property = @import("../Property.zig").Property;
-const PropertyData = @import("../Property.zig").Data;
 const Rect_f = @import("../basic_models.zig").Rect_f;
 const shape_mod = @import("shape.zig");
 
-/// Свойства фигуры по умолчанию.
+/// Свойства фигуры по умолчанию (добавляются к общим).
 pub const default_shape_properties = [_]Property{
     .{ .data = .{ .end_point = .{ .x = 100, .y = 200 } } },
 };
-
-/// Теги обязательных свойств.
-pub fn getRequiredTags() []const std.meta.Tag(PropertyData) {
-    return &([_]std.meta.Tag(PropertyData){std.meta.activeTag(default_shape_properties[0].data)});
-}
-
-/// Добавляет к объекту свойства по умолчанию для линии.
-pub fn appendDefaultShapeProperties(allocator: std.mem.Allocator, obj: *Object) !void {
-    for (default_shape_properties) |prop| try obj.properties.append(allocator, prop);
-}
-
-/// Локальные границы: от (0,0) до end_point.
-pub fn getLocalBounds(obj: *const Object) !Rect_f {
-    try shape_mod.ensure(obj, .line);
-    const ep = obj.getProperty(.end_point).?;
-    const min_x = @min(0, ep.end_point.x);
-    const max_x = @max(0, ep.end_point.x);
-    const min_y = @min(0, ep.end_point.y);
-    const max_y = @max(0, ep.end_point.y);
-    return .{
-        .x = min_x,
-        .y = min_y,
-        .w = max_x - min_x,
-        .h = max_y - min_y,
-    };
-}

src/models/shape/shape.zig

@@ -4,22 +4,37 @@ const Property = @import("../Property.zig").Property;
 const PropertyData = @import("../Property.zig").Data;
 const defaultCommonProperties = Object.defaultCommonProperties;
 const basic_models = @import("../basic_models.zig");
+const Point2_f = basic_models.Point2_f;
 const line = @import("line.zig");
 const ellipse = @import("ellipse.zig");
 const broken = @import("broken.zig");
-const arc = @import("arc.zig");
+pub const Rect = basic_models.Rect_f;
 
-pub const Rect = basic_models.Rectf;
+/// Добавляет к объекту список свойств фигуры. Для .points дублирует слайс (объект владеет).
+fn appendShapeProperties(allocator: std.mem.Allocator, obj: *Object, props: []const Property) !void {
+    for (props) |prop| {
+        if (prop.data == .points) {
+            const pts = prop.data.points;
+            const copy = try allocator.alloc(Point2_f, pts.len);
+            @memcpy(copy, pts);
+            try obj.properties.append(allocator, .{ .data = .{ .points = copy } });
+        } else {
+            try obj.properties.append(allocator, prop);
+        }
+    }
+}
 
 /// Создаёт объект с дефолтными общими и фигурными свойствами.
 pub fn createObject(allocator: std.mem.Allocator, shape_kind: Object.ShapeKind) !Object {
     var obj = try createWithCommonProperties(allocator, shape_kind);
     errdefer obj.deinit(allocator);
     switch (shape_kind) {
-        .line => try line.appendDefaultShapeProperties(allocator, &obj),
-        .ellipse => try ellipse.appendDefaultShapeProperties(allocator, &obj),
-        .broken => try broken.appendDefaultShapeProperties(allocator, &obj),
-        .arc => try arc.appendDefaultShapeProperties(allocator, &obj),
+        .line => try appendShapeProperties(allocator, &obj, &line.default_shape_properties),
+        .ellipse => try appendShapeProperties(allocator, &obj, &ellipse.default_shape_properties),
+        .broken => {
+            try appendShapeProperties(allocator, &obj, &broken.default_shape_properties);
+            try obj.setProperty(allocator, .{ .data = .{ .fill_rgba = obj.getProperty(.stroke_rgba).?.stroke_rgba } });
+        },
     }
     return obj;
 }
@@ -35,62 +50,3 @@ fn createWithCommonProperties(allocator: std.mem.Allocator, shape_kind: Object.S
         .children = std.ArrayList(Object).empty,
     };
 }
-
-/// Проверяет тип объекта и наличие обязательных свойств.
-pub fn ensure(obj: *const Object, expected_kind: Object.ShapeKind) !void {
-    if (obj.shape != expected_kind) return error.WrongShapeKind;
-    const tags = requiredTagsFor(expected_kind);
-    for (tags) |tag| {
-        if (obj.getProperty(tag) == null) return error.MissingRequiredProperty;
-    }
-}
-
-fn requiredTagsFor(kind: Object.ShapeKind) []const std.meta.Tag(PropertyData) {
-    return switch (kind) {
-        .line => line.getRequiredTags(),
-        .ellipse => ellipse.getRequiredTags(),
-        .broken => broken.getRequiredTags(),
-        .arc => arc.getRequiredTags(),
-    };
-}
-
-/// Локальные границы (AABB).
-pub fn getLocalBounds(obj: *const Object) !Rect {
-    return switch (obj.shape) {
-        .line => line.getLocalBounds(obj),
-        .ellipse => ellipse.getLocalBounds(obj),
-        .broken => broken.getLocalBounds(obj),
-        .arc => arc.getLocalBounds(obj),
-    };
-}
-
-test "getLocalBounds" {
-    const shape = @This();
-    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
-    defer _ = gpa.deinit();
-    const allocator = gpa.allocator();
-
-    var line_obj = try shape.createObject(allocator, .line);
-    defer line_obj.deinit(allocator);
-    const line_bounds = try getLocalBounds(&line_obj);
-    try std.testing.expect(line_bounds.x == 0);
-    try std.testing.expect(line_bounds.y == 0);
-    try std.testing.expect(line_bounds.w == 100);
-    try std.testing.expect(line_bounds.h == 0);
-
-    var ellipse_obj = try shape.createObject(allocator, .ellipse);
-    defer ellipse_obj.deinit(allocator);
-    const ellipse_bounds = try getLocalBounds(&ellipse_obj);
-    try std.testing.expect(ellipse_bounds.x == -50);
-    try std.testing.expect(ellipse_bounds.y == -50);
-    try std.testing.expect(ellipse_bounds.w == 100);
-    try std.testing.expect(ellipse_bounds.h == 100);
-
-    var broken_obj = try shape.createObject(allocator, .broken);
-    defer broken_obj.deinit(allocator);
-    const broken_bounds = try getLocalBounds(&broken_obj);
-    try std.testing.expect(broken_bounds.x == 0);
-    try std.testing.expect(broken_bounds.y == 0);
-    try std.testing.expect(broken_bounds.w == 80);
-    try std.testing.expect(broken_bounds.h == 60);
-}

src/random_document.zig

@@ -74,18 +74,20 @@ fn randomizeObjectProperties(allocator: std.mem.Allocator, doc_size: *const Size
             } });
         },
         .broken => {
-            var points = std.ArrayList(Point2_f).empty;
+            var list = std.ArrayList(Point2_f).empty;
+            defer list.deinit(allocator);
             const n = rng.intRangeLessThan(usize, 2, 9);
             var x: f32 = 0;
             var y: f32 = 0;
             for (0..n) |_| {
-                try points.append(allocator, .{ .x = x, .y = y });
+                try list.append(allocator, .{ .x = x, .y = y });
                 x += randFloat(rng, -40, 80);
                 y += randFloat(rng, -30, 60);
             }
-            try obj.setProperty(allocator, .{ .data = .{ .points = points } });
+            const slice = try allocator.alloc(Point2_f, list.items.len);
+            @memcpy(slice, list.items);
+            try obj.setProperty(allocator, .{ .data = .{ .points = slice } });
         },
-        .arc => {},
     }
 }
 

src/render/cpu/arc.zig

@@ -1,8 +0,0 @@
-const Document = @import("../../models/Document.zig");
-const pipeline = @import("pipeline.zig");
-const DrawContext = pipeline.DrawContext;
-
-const Object = Document.Object;
-
-/// Дуга (не реализовано).
-pub fn draw(_: *DrawContext, _: *const Object) void {}

src/render/cpu/broken.zig

@@ -17,7 +17,7 @@ pub fn draw(
     allocator: std.mem.Allocator,
 ) !void {
     const p_prop = obj.getProperty(.points) orelse return;
-    const pts = p_prop.points.items;
+    const pts = p_prop.points;
     if (pts.len < 2) return;
     const stroke = if (obj.getProperty(.stroke_rgba)) |s| pipeline.rgbaToPma(s.stroke_rgba) else default_stroke;
     const thickness = if (obj.getProperty(.thickness)) |t| t.thickness else default_thickness;

src/render/cpu/draw.zig

@@ -4,7 +4,6 @@ const pipeline = @import("pipeline.zig");
 const line = @import("line.zig");
 const ellipse = @import("ellipse.zig");
 const broken = @import("broken.zig");
-const arc = @import("arc.zig");
 const basic_models = @import("../../models/basic_models.zig");
 const Rect_i = basic_models.Rect_i;
 const Size_i = basic_models.Size_i;
@@ -32,7 +31,6 @@ fn drawObject(
         .line => line.draw(ctx, obj),
         .ellipse => try ellipse.draw(ctx, obj, allocator),
         .broken => try broken.draw(ctx, obj, allocator),
-        .arc => arc.draw(ctx, obj),
     }
 
     for (obj.children.items) |*child| {

src/render/cpu/ellipse.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const std_math = std.math;
 const Document = @import("../../models/Document.zig");
 const pipeline = @import("pipeline.zig");
+const line = @import("line.zig");
 const DrawContext = pipeline.DrawContext;
 const Color = @import("dvui").Color;
 const basic_models = @import("../../models/basic_models.zig");
@@ -9,6 +10,7 @@ const Point2_f = basic_models.Point2_f;
 
 const Object = Document.Object;
 const default_stroke: Color.PMA = .{ .r = 0, .g = 0, .b = 0, .a = 255 };
+const default_fill: Color.PMA = .{ .r = 0, .g = 0, .b = 0, .a = 0 };
 const default_thickness: f32 = 2.0;
 
 /// Эллипс с центром (0,0) и полуосями radii. Обводка — полоса расстояния до контура (чёткая линия, не круги).
@@ -23,6 +25,10 @@ pub fn draw(ctx: *DrawContext, obj: *const Object, allocator: std.mem.Allocator)
     const stroke = if (obj.getProperty(.stroke_rgba)) |s| pipeline.rgbaToPma(s.stroke_rgba) else default_stroke;
     const thickness = if (obj.getProperty(.thickness)) |t| t.thickness else default_thickness;
     const arc_percent = std_math.clamp(if (obj.getProperty(.arc_percent)) |p| p.arc_percent else 100.0, 0.0, 100.0);
+    const closed = if (obj.getProperty(.closed)) |c| c.closed else true;
+    const filled = if (obj.getProperty(.filled)) |f| f.filled else false;
+    const fill_color = if (obj.getProperty(.fill_rgba)) |f| pipeline.rgbaToPma(f.fill_rgba) else default_fill;
+    const do_fill = filled and (closed or arc_percent >= 100.0);
 
     const t = &ctx.transform;
     const min_r = @min(rx, ry);
@@ -66,6 +72,10 @@ pub fn draw(ctx: *DrawContext, obj: *const Object, allocator: std.mem.Allocator)
     stroke_ctx.pixels = buffer;
     stroke_ctx.replace_mode = true;
 
+    if (do_fill) {
+        stroke_ctx.startFill(allocator) catch return;
+    }
+
     const inv_rx = 1.0 / rx;
     const inv_ry = 1.0 / ry;
     const arc_len = 2.0 * std_math.pi * arc_percent / 100.0;
@@ -91,5 +101,16 @@ pub fn draw(ctx: *DrawContext, obj: *const Object, allocator: std.mem.Allocator)
         }
     }
 
+    if (closed and arc_percent < 100.0) {
+        const end_x = rx * std_math.sin(arc_len);
+        const end_y = ry * std_math.cos(arc_len);
+        line.drawLine(&stroke_ctx, 0, 0, 0, ry, stroke, thickness, false);
+        line.drawLine(&stroke_ctx, 0, 0, end_x, end_y, stroke, thickness, false);
+    }
+
+    if (do_fill) {
+        stroke_ctx.stopFill(allocator, fill_color);
+    }
+
     ctx.compositeDrawerContext(&stroke_ctx, t.opacity);
 }

src/toolbar/tools.zig

@@ -1,7 +1,6 @@
 const Toolbar = @import("Toolbar.zig");
 const line = @import("tools/line.zig");
 const ellipse = @import("tools/ellipse.zig");
-const arc = @import("tools/arc.zig");
 const broken = @import("tools/broken.zig");
 const icons = @import("../icons.zig");
 
@@ -16,11 +15,6 @@ pub const default_tools = [_]Toolbar.ToolDescriptor{
         .icon_tvg = icons.ellipse,
         .implementation = &ellipse.tool,
     },
-    .{
-        .name = "Arc",
-        .icon_tvg = icons.arc,
-        .implementation = &arc.tool,
-    },
     .{
         .name = "Broken line",
         .icon_tvg = icons.broken,

src/toolbar/tools/arc.zig

@@ -1,10 +0,0 @@
-const Tool = @import("../Tool.zig");
-const shape = @import("../../models/shape/shape.zig");
-
-fn onCanvasClick(ctx: *const Tool.ToolContext) !void {
-    const canvas = ctx.canvas;
-    var obj = shape.createObject(canvas.allocator, .arc) catch return;
-    defer obj.deinit(canvas.allocator);
-    try ctx.addObject(obj);
-}
-pub const tool = Tool.Tool{ .onCanvasClick = onCanvasClick };

src/ui/canvas_view.zig

@@ -6,6 +6,7 @@ const Document = @import("../models/Document.zig");
 const Property = @import("../models/Property.zig").Property;
 const PropertyData = @import("../models/Property.zig").Data;
 const Rect_i = @import("../models/basic_models.zig").Rect_i;
+const Point2_f = @import("../models/basic_models.zig").Point2_f;
 const Tool = @import("../toolbar/Tool.zig");
 const RenderStats = @import("../render/RenderStats.zig");
 const icons = @import("../icons.zig");
@@ -379,6 +380,11 @@ fn drawStatsPanel(stats: RenderStats, frame_index: u64) void {
     panel.deinit();
 }
 
+fn applyPropertyPatch(canvas: *Canvas, obj: *Document.Object, patch: Property) void {
+    obj.setProperty(canvas.allocator, patch) catch {};
+    canvas.requestRedraw();
+}
+
 fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Property, row_index: usize) void {
     const row_id: usize = row_index * 16;
     const is_even = row_index % 2 == 0;
@@ -420,8 +426,7 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     changed = res.changed or changed;
                 }
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .position = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .position = next } });
                 }
             },
             .angle => |angle| {
@@ -434,8 +439,7 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     subrow.deinit();
                     if (res.changed) {
                         next = degrees * std.math.pi / 180.0;
-                        obj.setProperty(canvas.allocator, .{ .data = .{ .angle = next } }) catch {};
-                        canvas.requestRedraw();
+                        applyPropertyPatch(canvas, obj, .{ .data = .{ .angle = next } });
                     }
                 }
             },
@@ -459,29 +463,25 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     changed = res.changed or changed;
                 }
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .scale = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .scale = next } });
                 }
             },
             .visible => |v| {
                 var next = v;
                 if (dvui.checkbox(@src(), &next, "Visible", .{})) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .visible = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .visible = next } });
                 }
             },
             .opacity => |opacity| {
                 var next = opacity;
                 if (dvui.sliderEntry(@src(), "{d:0.2}", .{ .value = &next, .min = 0.0, .max = 1.0, .interval = 0.01 }, .{ .expand = .horizontal })) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .opacity = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .opacity = next } });
                 }
             },
             .locked => |v| {
                 var next = v;
                 if (dvui.checkbox(@src(), &next, "Locked", .{})) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .locked = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .locked = next } });
                 }
             },
             .size => |size| {
@@ -504,8 +504,7 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     changed = res.changed or changed;
                 }
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .size = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .size = next } });
                 }
             },
             .radii => |radii| {
@@ -528,15 +527,13 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     changed = res.changed or changed;
                 }
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .radii = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .radii = next } });
                 }
             },
             .arc_percent => |pct| {
                 var next = pct;
                 if (dvui.sliderEntry(@src(), "{d:0.0}%", .{ .value = &next, .min = 0.0, .max = 100.0, .interval = 1.0 }, .{ .expand = .horizontal })) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .arc_percent = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .arc_percent = next } });
                 }
             },
             .end_point => |pt| {
@@ -559,15 +556,16 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     changed = res.changed or changed;
                 }
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .end_point = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .end_point = next } });
                 }
             },
             .points => |points| {
-                var list = points.clone(canvas.allocator) catch {
-                    dvui.label(@src(), "Points: {d}", .{points.items.len}, .{});
+                var list = std.ArrayList(Point2_f).empty;
+                list.appendSlice(canvas.allocator, points) catch {
+                    dvui.label(@src(), "Points: {d}", .{points.len}, .{});
                     return;
                 };
+                defer list.deinit(canvas.allocator);
                 dvui.label(@src(), "Points: {d}", .{list.items.len}, .{});
 
                 var changed = false;
@@ -677,13 +675,13 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                 }
 
                 if (changed) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .points = list } }) catch {
-                        list.deinit(canvas.allocator);
+                    const slice = canvas.allocator.alloc(Point2_f, list.items.len) catch return;
+                    @memcpy(slice, list.items);
+                    obj.setProperty(canvas.allocator, .{ .data = .{ .points = slice } }) catch {
+                        canvas.allocator.free(slice);
                         return;
                     };
                     canvas.requestRedraw();
-                } else {
-                    list.deinit(canvas.allocator);
                 }
             },
             .fill_rgba => |rgba| {
@@ -701,23 +699,20 @@ fn drawPropertyEditor(canvas: *Canvas, obj: *Document.Object, prop: *const Prope
                     const res = dvui.textEntryNumber(@src(), T, .{ .value = &next, .min = @as(T, 0.0), .max = @as(T, 100.0) }, .{ .expand = .horizontal });
                     subrow.deinit();
                     if (res.changed) {
-                        obj.setProperty(canvas.allocator, .{ .data = .{ .thickness = next } }) catch {};
-                        canvas.requestRedraw();
+                        applyPropertyPatch(canvas, obj, .{ .data = .{ .thickness = next } });
                     }
                 }
             },
             .closed => |v| {
                 var next = v;
                 if (dvui.checkbox(@src(), &next, "Closed", .{})) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .closed = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .closed = next } });
                 }
             },
             .filled => |v| {
                 var next = v;
                 if (dvui.checkbox(@src(), &next, "Filled", .{})) {
-                    obj.setProperty(canvas.allocator, .{ .data = .{ .filled = next } }) catch {};
-                    canvas.requestRedraw();
+                    applyPropertyPatch(canvas, obj, .{ .data = .{ .filled = next } });
                 }
             },
         }
@@ -733,12 +728,11 @@ fn drawColorEditor(canvas: *Canvas, obj: *Document.Object, rgba: u32, is_fill: b
         .{ .expand = .horizontal },
     )) {
         const next = colorToRgba(hsv.toColor());
-        if (is_fill) {
-            obj.setProperty(canvas.allocator, .{ .data = .{ .fill_rgba = next } }) catch {};
-        } else {
-            obj.setProperty(canvas.allocator, .{ .data = .{ .stroke_rgba = next } }) catch {};
-        }
-        canvas.requestRedraw();
+        const patch: Property = if (is_fill)
+            .{ .data = .{ .fill_rgba = next } }
+        else
+            .{ .data = .{ .stroke_rgba = next } };
+        applyPropertyPatch(canvas, obj, patch);
     }
 }
 

src/ui/left_panel.zig

@@ -19,7 +19,6 @@ fn shapeLabel(shape: Object.ShapeKind) []const u8 {
     return switch (shape) {
         .line => "Line",
         .ellipse => "Ellipse",
-        .arc => "Arc",
         .broken => "Broken line",
     };
 }