From 1907d4fffd24e6d6bd1b7db7d903da60e53888dc Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 8 Oct 2023 12:23:17 +0800
Subject: ...

---
 src/platform/graphics/web_canvas/Painter.cpp | 32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'src/platform/graphics/web_canvas')

diff --git a/src/platform/graphics/web_canvas/Painter.cpp b/src/platform/graphics/web_canvas/Painter.cpp
index fd196256..cd04a725 100644
--- a/src/platform/graphics/web_canvas/Painter.cpp
+++ b/src/platform/graphics/web_canvas/Painter.cpp
@@ -1 +1,33 @@
+#include "cru/platform/graphics/web_canvas/WebCanvasGraphicsFactory.h"
 #include "cru/platform/graphics/web_canvas/WebCanvasPainter.h"
+#include "cru/platform/graphics/web_canvas/WebCanvasResource.h"
+
+#include <optional>
+
+namespace cru::platform::graphics::web_canvas {
+
+namespace {
+void contextSetTransform(emscripten::val context, const Matrix& matrix) {
+  context.call<void>("setTransform", matrix.m11, matrix.m12, matrix.m21,
+                     matrix.m22, matrix.m31, matrix.m32);
+}
+}  // namespace
+
+WebCanvasPainter::WebCanvasPainter(WebCanvasGraphicsFactory* factory,
+                                   emscripten::val context,
+                                   std::optional<Matrix> current_transform)
+    : WebCanvasResource(factory),
+      context_(context),
+      current_transform_(current_transform.value_or(Matrix::Identity())) {
+  contextSetTransform(context_, current_transform_);
+}
+
+WebCanvasPainter::~WebCanvasPainter() {}
+
+Matrix WebCanvasPainter::GetTransform() { return current_transform_; }
+
+void WebCanvasPainter::SetTransform(const Matrix& transform) {
+  current_transform_ = transform;
+  contextSetTransform(context_, transform);
+}
+}  // namespace cru::platform::graphics::web_canvas
-- 
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