From 8532114673dc65a19affd9b4def5a45b93cda4ea Mon Sep 17 00:00:00 2001
From: Roman Pytkov <mr.pytkov@gmail.com>
Date: Thu, 22 Jan 2026 19:12:42 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9F=D1=80=D0=B8=D0=BA=D0=BE=D0=BB=D1=8C?=
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---
 src/Canvas.zig                 |  2 +-
 src/render/CpuRenderEngine.zig | 35 ++++++++++++++++++++++------------
 2 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/src/Canvas.zig b/src/Canvas.zig
index 0835b5f..0d19f56 100644
--- a/src/Canvas.zig
+++ b/src/Canvas.zig
@@ -17,7 +17,7 @@ scroll: dvui.ScrollInfo = .{
     .vertical = .auto,
     .horizontal = .auto,
 },
-native_scaling: bool = false,
+native_scaling: bool = true,
 gradient_start: Color.PMA = .{ .r = 0, .g = 0, .b = 0, .a = 255 },
 gradient_end: Color.PMA = .{ .r = 255, .g = 255, .b = 255, .a = 255 },
 document: ?*Document = null,
diff --git a/src/render/CpuRenderEngine.zig b/src/render/CpuRenderEngine.zig
index a44c2c3..c9bdbd2 100644
--- a/src/render/CpuRenderEngine.zig
+++ b/src/render/CpuRenderEngine.zig
@@ -63,6 +63,15 @@ fn renderGradient(self: CpuRenderEngine, pixels: []Color.PMA, width: u32, height
 fn renderSquares(self: CpuRenderEngine, pixels: []Color.PMA, canvas_size: ImageSize, visible_rect: ImageRect) void {
     _ = self;
 
+    const colors = [_]Color.PMA{
+        .{ .r = 255, .g = 0, .b = 0, .a = 255 }, // red
+        .{ .r = 255, .g = 165, .b = 0, .a = 255 }, // orange
+        .{ .r = 255, .g = 255, .b = 0, .a = 255 }, // yellow
+        .{ .r = 0, .g = 255, .b = 0, .a = 255 }, // green
+        .{ .r = 0, .g = 255, .b = 255, .a = 255 }, // cyan
+        .{ .r = 0, .g = 0, .b = 255, .a = 255 }, // blue
+    };
+
     const squares_num = 5;
     var thikness: u32 = @intFromFloat(@as(f32, @floatFromInt(canvas_size.w + canvas_size.h)) / 2 * 0.03);
     if (thikness == 0) thikness = 1;
@@ -97,26 +106,28 @@ fn renderSquares(self: CpuRenderEngine, pixels: []Color.PMA, canvas_size: ImageS
             const canvas_x = x + visible_rect.x;
             if (canvas_x >= canvas_size.w) continue;
 
-            // Check if in vertical line
-            var in_vertical_line = false;
-            for (x_pos) |pos| {
-                if (canvas_x >= pos and canvas_x < pos + thikness) {
-                    in_vertical_line = true;
+            // Check vertical line index
+            var vertical_index: ?u32 = null;
+            for (0..x_pos.len) |i| {
+                if (canvas_x >= x_pos[i] and canvas_x < x_pos[i] + thikness) {
+                    vertical_index = @intCast(i);
                     break;
                 }
             }
 
-            // Check if in horizontal line
-            var in_horizontal_line = false;
-            for (y_pos) |pos| {
-                if (canvas_y >= pos and canvas_y < pos + thikness) {
-                    in_horizontal_line = true;
+            // Check horizontal line index
+            var horizontal_index: ?u32 = null;
+            for (0..y_pos.len) |i| {
+                if (canvas_y >= y_pos[i] and canvas_y < y_pos[i] + thikness) {
+                    horizontal_index = @intCast(i);
                     break;
                 }
             }
 
-            if (in_vertical_line or in_horizontal_line) {
-                pixels[y * visible_rect.w + x] = .{ .r = 255, .g = 0, .b = 0, .a = 255 };
+            if (vertical_index) |idx| {
+                pixels[y * visible_rect.w + x] = colors[idx];
+            } else if (horizontal_index) |idx| {
+                pixels[y * visible_rect.w + x] = colors[idx];
             } else {
                 // Find square
                 var square_x: u32 = 0;