diff --git a/assets/icons/.gitkeep b/assets/icons/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/Canvas.zig b/src/Canvas.zig
index c2455fb..051f1ac 100644
--- a/src/Canvas.zig
+++ b/src/Canvas.zig
@@ -9,11 +9,13 @@ const Size_i = basic_models.Size_i;
 const Point2_f = @import("models/basic_models.zig").Point2_f;
 const Color = dvui.Color;
 
+const Toolbar = @import("Toolbar.zig");
 const Canvas = @This();
 
 allocator: std.mem.Allocator,
 document: *Document,
 render_engine: RenderEngine,
+toolbar: Toolbar,
 texture: ?dvui.Texture = null,
 pos: dvui.Point = dvui.Point{ .x = 400, .y = 400 },
 scroll: dvui.ScrollInfo = .{
@@ -30,15 +32,17 @@ cursor_document_point: ?Point2_f = null,
 /// true — рисовать документ (render), false — пример (gradient/squares).
 draw_document: bool = true,
 
-pub fn init(allocator: std.mem.Allocator, document: *Document, engine: RenderEngine) Canvas {
+pub fn init(allocator: std.mem.Allocator, document: *Document, engine: RenderEngine, toolbar: Toolbar) Canvas {
     return .{
         .allocator = allocator,
         .document = document,
         .render_engine = engine,
+        .toolbar = toolbar,
     };
 }
 
 pub fn deinit(self: *Canvas) void {
+    self.toolbar.deinit();
     if (self.texture) |texture| {
         dvui.Texture.destroyLater(texture);
         self.texture = null;
diff --git a/src/Toolbar.zig b/src/Toolbar.zig
new file mode 100644
index 0000000..9b44df9
--- /dev/null
+++ b/src/Toolbar.zig
@@ -0,0 +1,36 @@
+//! Структура тулбара инструментов. Жизненный цикл совпадает с Canvas.
+
+const tool_interface = @import("tool_interface.zig");
+
+const Toolbar = @This();
+
+/// Описание одного инструмента для тулбара.
+pub const ToolDescriptor = struct {
+    name: []const u8,
+    /// Иконка в формате TVG (байты).
+    icon_tvg: []const u8,
+    /// Реализация интерфейса инструмента (своя для каждого инструмента в tools/).
+    implementation: *const tool_interface.Tool,
+};
+
+/// Вертикальный тулбар инструментов.
+tools: []const ToolDescriptor,
+selected_index: usize,
+
+pub fn init(tools_list: []const ToolDescriptor) Toolbar {
+    return .{
+        .tools = tools_list,
+        .selected_index = 0,
+    };
+}
+
+pub fn deinit(_: *Toolbar) void {}
+
+pub fn currentDescriptor(self: *const Toolbar) ?*const ToolDescriptor {
+    if (self.tools.len == 0) return null;
+    return &self.tools[self.selected_index];
+}
+
+pub fn select(self: *Toolbar, index: usize) void {
+    if (index < self.tools.len) self.selected_index = index;
+}
diff --git a/src/WindowContext.zig b/src/WindowContext.zig
index 6fb6733..9f0d919 100644
--- a/src/WindowContext.zig
+++ b/src/WindowContext.zig
@@ -5,6 +5,8 @@ const RenderEngine = @import("render/RenderEngine.zig").RenderEngine;
 const Document = @import("models/Document.zig");
 const random_document = @import("models/random_document.zig");
 const basic_models = @import("models/basic_models.zig");
+const tools = @import("tools.zig");
+const Toolbar = @import("Toolbar.zig");
 
 const WindowContext = @This();
 
@@ -17,7 +19,12 @@ pub const OpenDocument = struct {
         const default_size = basic_models.Size_f{ .w = 800, .h = 600 };
         self.document = Document.init(allocator, default_size);
         self.cpu_render = CpuRenderEngine.init(allocator, .Squares);
-        self.canvas = Canvas.init(allocator, &self.document, (&self.cpu_render).renderEngine());
+        self.canvas = Canvas.init(
+            allocator,
+            &self.document,
+            (&self.cpu_render).renderEngine(),
+            Toolbar.init(&tools.default_tools),
+        );
     }
 
     pub fn deinit(self: *OpenDocument) void {
diff --git a/src/icons.zig b/src/icons.zig
new file mode 100644
index 0000000..aff6e5a
--- /dev/null
+++ b/src/icons.zig
@@ -0,0 +1,3 @@
+const dvui = @import("dvui");
+
+pub const line = dvui.entypo.line_graph;
diff --git a/src/tool_interface.zig b/src/tool_interface.zig
new file mode 100644
index 0000000..aeb1ffb
--- /dev/null
+++ b/src/tool_interface.zig
@@ -0,0 +1,14 @@
+//! Общий интерфейс инструмента. Реализации живут в каталоге tools/.
+
+const Point2_f = @import("models/basic_models.zig").Point2_f;
+
+/// Контекст вызова: холст и точка в координатах документа.
+pub const ToolContext = struct {
+    canvas: *anyopaque,
+    document_point: Point2_f,
+};
+
+/// Интерфейс инструмента: один метод — клик по холсту в позиции курсора.
+pub const Tool = struct {
+    onClick: *const fn (*const ToolContext) void,
+};
diff --git a/src/tools.zig b/src/tools.zig
new file mode 100644
index 0000000..fdc8152
--- /dev/null
+++ b/src/tools.zig
@@ -0,0 +1,13 @@
+//! Список инструментов по умолчанию для тулбара. Реализации — в каталоге tools/.
+
+const Toolbar = @import("Toolbar.zig");
+const line = @import("tools/line.zig");
+const icons = @import("icons.zig");
+
+pub const default_tools = [_]Toolbar.ToolDescriptor{
+    .{
+        .name = "Line",
+        .icon_tvg = icons.line,
+        .implementation = &line.tool,
+    },
+};
diff --git a/src/tools/line.zig b/src/tools/line.zig
new file mode 100644
index 0000000..e02958f
--- /dev/null
+++ b/src/tools/line.zig
@@ -0,0 +1,21 @@
+//! Инструмент «Линия»: создаёт линию в позиции клика.
+
+const Canvas = @import("../Canvas.zig");
+const tool_interface = @import("../tool_interface.zig");
+const shape = @import("../models/shape/shape.zig");
+
+fn onClick(ctx: *const tool_interface.ToolContext) void {
+    const canvas: *Canvas = @alignCast(@ptrCast(ctx.canvas));
+    var obj = shape.createObject(canvas.document.allocator, .line) catch return;
+    obj.setProperty(canvas.document.allocator, .{ .data = .{ .position = ctx.document_point } }) catch {
+        obj.deinit(canvas.document.allocator);
+        return;
+    };
+    canvas.document.addObject(obj) catch {
+        obj.deinit(canvas.document.allocator);
+        return;
+    };
+    canvas.requestRedraw();
+}
+
+pub const tool = tool_interface.Tool{ .onClick = onClick };
diff --git a/src/ui/canvas_view.zig b/src/ui/canvas_view.zig
index e067b1e..8ef3f39 100644
--- a/src/ui/canvas_view.zig
+++ b/src/ui/canvas_view.zig
@@ -3,6 +3,7 @@ const dvui = @import("dvui");
 const dvui_ext = @import("dvui_ext.zig");
 const Canvas = @import("../Canvas.zig");
 const Rect_i = @import("../models/basic_models.zig").Rect_i;
+const tool_interface = @import("../tool_interface.zig");
 
 pub fn canvasView(canvas: *Canvas, content_rect_scale: dvui.RectScale) void {
     var textured = dvui_ext.texturedBox(content_rect_scale, dvui.Rect.all(20));
@@ -25,6 +26,7 @@ pub fn canvasView(canvas: *Canvas, content_rect_scale: dvui.RectScale) void {
             }
             scroll.deinit();
 
+            drawToolbar(canvas);
             dvui.label(@src(), "Canvas", .{}, .{ .gravity_x = 0.5, .gravity_y = 0.0 });
         }
         overlay.deinit();
@@ -159,10 +161,49 @@ fn handleCanvasMouse(canvas: *Canvas, scroll: anytype) void {
                 };
                 const doc_pt = canvas.contentPointToDocument(content_pt, natural_scale);
                 canvas.cursor_document_point = if (canvas.isContentPointOnDocument(content_pt, natural_scale)) doc_pt else null;
-                if (canvas.cursor_document_point) |point|
-                    std.debug.print("cursor_document_point: {}\n", .{point});
+                if (canvas.cursor_document_point) |point| {
+                    if (canvas.toolbar.currentDescriptor()) |desc| {
+                        var ctx = tool_interface.ToolContext{
+                            .canvas = canvas,
+                            .document_point = point,
+                        };
+                        desc.implementation.onClick(&ctx);
+                    }
+                }
             },
             else => {},
         }
     }
 }
+
+fn drawToolbar(canvas: *Canvas) void {
+    const tools_list = canvas.toolbar.tools;
+    if (tools_list.len == 0) return;
+
+    var bar = dvui.box(
+        @src(),
+        .{ .dir = .vertical },
+        .{
+            .gravity_x = 0.0,
+            .gravity_y = 0.0,
+            .margin = dvui.Rect{ .x = 8, .y = 8 },
+            .padding = dvui.Rect.all(6),
+            .corner_radius = dvui.Rect.all(8),
+            .background = true,
+            .color_fill = dvui.Color.black.opacity(0.2),
+        },
+    );
+    {
+        for (tools_list, 0..) |*tool_desc, i| {
+            const is_selected = (canvas.toolbar.selected_index == i);
+            const opts: dvui.Options = .{
+                .id_extra = i,
+                .color_fill = if (is_selected) dvui.Color.transparent else undefined,
+            };
+            if (dvui.buttonIcon(@src(), tool_desc.name, tool_desc.icon_tvg, .{}, .{}, opts)) {
+                canvas.toolbar.select(i);
+            }
+        }
+    }
+    bar.deinit();
+}