Случайное дерево объектов

src/WindowContext.zig

@@ -60,6 +60,7 @@ pub fn addNewDocument(self: *WindowContext) !void {
     const ptr = try self.allocator.create(OpenDocument);
     errdefer self.allocator.destroy(ptr);
     OpenDocument.init(self.allocator, ptr);
+    try ptr.document.addRandomShapes(std.crypto.random);
     try self.documents.append(self.allocator, ptr);
     self.active_document_index = self.documents.items.len - 1;
 }

src/models/Document.zig

@@ -40,3 +40,43 @@ pub fn addShape(self: *Document, parent: ?*Object, shape: Object.ShapeKind) !voi
         try self.addObject(obj);
     }
 }
+
+fn randomShapeKind(rng: std.Random) Object.ShapeKind {
+    const shapes_implemented = [_]Object.ShapeKind{ .line, .ellipse, .broken };
+    return shapes_implemented[rng.intRangeLessThan(usize, 0, shapes_implemented.len)];
+}
+
+/// Создаёт случайное количество фигур в документе (в т.ч. вложенных).
+/// Используются только реализованные типы: line, ellipse, broken.
+/// Ограничение max_total предотвращает экспоненциальный рост и переполнение.
+pub fn addRandomShapes(self: *Document, rng: std.Random) !void {
+    const max_total: usize = 80;
+    var total_count: usize = 0;
+
+    const n_root = rng.intRangeLessThan(usize, 1, 5);
+    for (0..n_root) |_| {
+        if (total_count >= max_total) break;
+        try self.addShape(null, randomShapeKind(rng));
+        total_count += 1;
+    }
+
+    var stack = std.ArrayList(*Object).empty;
+    defer stack.deinit(self.allocator);
+    for (self.objects.items) |*obj| {
+        try stack.append(self.allocator, obj);
+    }
+    while (stack.pop()) |obj| {
+        if (total_count >= max_total) continue;
+        const n_children = rng.intRangeLessThan(usize, 0, 2);
+        const base_len = obj.children.items.len;
+        for (0..n_children) |_| {
+            if (total_count >= max_total) break;
+            try self.addShape(obj, randomShapeKind(rng));
+            total_count += 1;
+        }
+        // Пушим в стек только после всех append, чтобы не держать указатели при реаллокации obj.children
+        for (obj.children.items[base_len..]) |*child| {
+            try stack.append(self.allocator, child);
+        }
+    }
+}

src/models/Object.zig

@@ -97,7 +97,7 @@ pub fn createLine(allocator: std.mem.Allocator) !Object {
 pub fn createBrokenLine(allocator: std.mem.Allocator) !Object {
     var obj = try createWithCommonProperties(allocator, .broken);
     errdefer obj.deinit(allocator);
-    var points = std.ArrayList(Point2).init(allocator);
+    var points = std.ArrayList(Point2).empty;
     try points.appendSlice(allocator, &.{
         .{ .x = 0, .y = 0 },
         .{ .x = 80, .y = 0 },

src/ui/frame.zig

@@ -22,16 +22,8 @@ pub fn guiFrame(ctx: *WindowContext) bool {
         {
             left_panel.leftPanel(ctx);
 
-            var back = dvui.box(
-                @src(),
-                .{ .dir = .horizontal },
-                .{ .expand = .both, .padding = dvui.Rect.all(12), .background = true },
-            );
-            {
             right_panel.rightPanel(ctx);
         }
-            back.deinit();
-        }
         content_row.deinit();
     }
     root.deinit();

src/ui/left_panel.zig

@@ -1,14 +1,112 @@
 const dvui = @import("dvui");
 const WindowContext = @import("../WindowContext.zig");
+const Document = @import("../models/Document.zig");
+const Object = Document.Object;
+
+const panel_gap: f32 = 12;
+const panel_padding: f32 = 5;
+const panel_radius: f32 = 24;
+const fill_color = dvui.Color.black.opacity(0.2);
+
+fn shapeLabel(shape: Object.ShapeKind) []const u8 {
+    return switch (shape) {
+        .line => "Line",
+        .ellipse => "Ellipse",
+        .arc => "Arc",
+        .broken => "Broken line",
+    };
+}
+
+fn objectTreeRow(obj: *const Object, depth: u32, row_id: *usize) void {
+    const id = row_id.*;
+    row_id.* += 1;
+    const indent_px = depth * 18;
+    var row = dvui.box(
+        @src(),
+        .{ .dir = .horizontal },
+        .{ .padding = dvui.Rect{ .x = @floatFromInt(indent_px) }, .id_extra = id },
+    );
+    {
+        dvui.labelNoFmt(@src(), shapeLabel(obj.shape), .{}, .{ .id_extra = id });
+    }
+    row.deinit();
+    for (obj.children.items) |*child| {
+        objectTreeRow(child, depth + 1, row_id);
+    }
+}
+
+fn objectTree(ctx: *WindowContext) void {
+    const active_doc = ctx.activeDocument();
+    if (active_doc) |open_doc| {
+        const doc = &open_doc.document;
+        if (doc.objects.items.len == 0) {
+            dvui.label(@src(), "No objects", .{}, .{});
+        } else {
+            var row_id: usize = 0;
+            for (doc.objects.items) |*obj| {
+                objectTreeRow(obj, 0, &row_id);
+            }
+        }
+    } else {
+        dvui.label(@src(), "No document", .{}, .{});
+    }
+}
 
 pub fn leftPanel(ctx: *WindowContext) void {
+    var padding = dvui.Rect.all(panel_gap);
+    padding.w = 0;
     var panel = dvui.box(
         @src(),
         .{ .dir = .vertical },
-        .{ .expand = .vertical, .min_size_content = .{ .w = 200 }, .background = true },
+        .{
+            .expand = .vertical,
+            .min_size_content = .{ .w = 220 },
+            .background = true,
+            .padding = padding,
+        },
     );
     {
-        dvui.label(@src(), "Tools", .{}, .{});
+        // Верхняя часть: дерево объектов
+        var tree_section = dvui.box(
+            @src(),
+            .{ .dir = .vertical },
+            .{
+                .expand = .both,
+                .padding = dvui.Rect.all(panel_padding),
+                .corner_radius = dvui.Rect.all(panel_radius),
+                .color_fill = fill_color,
+                .background = true,
+            },
+        );
+        {
+            dvui.label(@src(), "Objects", .{}, .{});
+            var scroll = dvui.scrollArea(
+                @src(),
+                .{ .vertical = .auto },
+                .{ .expand = .vertical, .background = false },
+            );
+            {
+                objectTree(ctx);
+            }
+            scroll.deinit();
+        }
+        tree_section.deinit();
+
+        // Нижняя часть: настройки
+        var settings_section = dvui.box(
+            @src(),
+            .{ .dir = .vertical },
+            .{
+                .expand = .horizontal,
+                .margin = .{ .y = 5 },
+                .padding = dvui.Rect.all(panel_padding),
+                .corner_radius = dvui.Rect.all(panel_radius),
+                .color_fill = fill_color,
+                .background = true,
+            },
+        );
+        {
+            dvui.label(@src(), "Settings", .{}, .{});
 
             const active_doc = ctx.activeDocument();
             if (active_doc) |doc| {
@@ -26,5 +124,7 @@ pub fn leftPanel(ctx: *WindowContext) void {
                 dvui.label(@src(), "No document", .{}, .{});
             }
         }
+        settings_section.deinit();
+    }
     panel.deinit();
 }

src/ui/right_panel.zig

@@ -5,6 +5,12 @@ const canvas_view = @import("canvas_view.zig");
 
 pub fn rightPanel(ctx: *WindowContext) void {
     const fill_color = dvui.Color.black.opacity(0.25);
+    var back = dvui.box(
+        @src(),
+        .{ .dir = .horizontal },
+        .{ .expand = .both, .padding = dvui.Rect.all(12), .background = true },
+    );
+    {
         var panel = dvui.box(
             @src(),
             .{ .dir = .vertical },
@@ -26,13 +32,27 @@ pub fn rightPanel(ctx: *WindowContext) void {
             }
         }
         panel.deinit();
+    }
+    back.deinit();
 }
 
 fn noDocView(ctx: *WindowContext) void {
     var center = dvui.box(
         @src(),
         .{ .dir = .vertical },
-        .{ .expand = .both, .padding = dvui.Rect.all(20) },
+        .{
+            .expand = .both,
+            .padding = dvui.Rect.all(20),
+        },
+    );
+    {
+        var box = dvui.box(
+            @src(),
+            .{ .dir = .vertical },
+            .{
+                .gravity_x = 0.5,
+                .gravity_y = 0.5,
+            },
         );
         {
             dvui.label(@src(), "No document open", .{}, .{});
@@ -42,5 +62,7 @@ fn noDocView(ctx: *WindowContext) void {
                 };
             }
         }
+        box.deinit();
+    }
     center.deinit();
 }