From f76b47291ac164ec0169f721dab5b1b0fe016322 Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Tue, 23 Sep 2025 23:23:38 +0800
Subject: Organize platform demo.

---
 demos/platform/graphics/CMakeLists.txt |  8 +++++++
 demos/platform/graphics/DrawCircle.cpp | 31 +++++++++++++++++++++++++
 demos/platform/graphics/SvgPath.cpp    | 41 ++++++++++++++++++++++++++++++++++
 3 files changed, 80 insertions(+)
 create mode 100644 demos/platform/graphics/CMakeLists.txt
 create mode 100644 demos/platform/graphics/DrawCircle.cpp
 create mode 100644 demos/platform/graphics/SvgPath.cpp

(limited to 'demos/platform/graphics')

diff --git a/demos/platform/graphics/CMakeLists.txt b/demos/platform/graphics/CMakeLists.txt
new file mode 100644
index 00000000..e2a96c09
--- /dev/null
+++ b/demos/platform/graphics/CMakeLists.txt
@@ -0,0 +1,8 @@
+add_library(CruDemoPlatformGraphicsBase INTERFACE)
+target_link_libraries(CruDemoPlatformGraphicsBase INTERFACE CruPlatformGraphicsBootstrap)
+
+add_executable(CruDemoPlatformGraphicsDrawCircle DrawCircle.cpp)
+target_link_libraries(CruDemoPlatformGraphicsDrawCircle PRIVATE CruDemoPlatformGraphicsBase)
+
+add_executable(CruDemoPlatformGraphicsSvgPath SvgPath.cpp)
+target_link_libraries(CruDemoPlatformGraphicsSvgPath PRIVATE CruDemoPlatformGraphicsBase)
diff --git a/demos/platform/graphics/DrawCircle.cpp b/demos/platform/graphics/DrawCircle.cpp
new file mode 100644
index 00000000..d3246527
--- /dev/null
+++ b/demos/platform/graphics/DrawCircle.cpp
@@ -0,0 +1,31 @@
+#include "cru/base/io/CFileStream.h"
+#include "cru/platform/Color.h"
+#include "cru/platform/bootstrap/GraphicsBootstrap.h"
+#include "cru/platform/graphics/Factory.h"
+#include "cru/platform/graphics/ImageFactory.h"
+#include "cru/platform/graphics/Painter.h"
+
+#include <memory>
+
+int main() {
+  std::unique_ptr<cru::platform::graphics::IGraphicsFactory> graphics_factory(
+      cru::platform::bootstrap::CreateGraphicsFactory());
+
+  auto image = graphics_factory->GetImageFactory()->CreateBitmap(500, 500);
+
+  {
+    auto brush =
+        graphics_factory->CreateSolidColorBrush(cru::platform::colors::skyblue);
+    auto painter = image->CreatePainter();
+    painter->FillEllipse(cru::platform::Rect{200, 200, 100, 100}, brush.get());
+    painter->EndDraw();
+  }
+
+  cru::io::CFileStream file_stream("draw-circle-demo.png", "wb");
+
+  graphics_factory->GetImageFactory()->EncodeToStream(
+      image.get(), &file_stream, cru::platform::graphics::ImageFormat::Png,
+      1.0f);
+
+  return 0;
+}
diff --git a/demos/platform/graphics/SvgPath.cpp b/demos/platform/graphics/SvgPath.cpp
new file mode 100644
index 00000000..332456a8
--- /dev/null
+++ b/demos/platform/graphics/SvgPath.cpp
@@ -0,0 +1,41 @@
+
+#include "cru/base/io/CFileStream.h"
+#include "cru/platform/Color.h"
+#include "cru/platform/Matrix.h"
+#include "cru/platform/bootstrap/GraphicsBootstrap.h"
+#include "cru/platform/graphics/Factory.h"
+#include "cru/platform/graphics/ImageFactory.h"
+#include "cru/platform/graphics/Painter.h"
+
+#include <memory>
+
+int main() {
+  std::unique_ptr<cru::platform::graphics::IGraphicsFactory> graphics_factory(
+      cru::platform::bootstrap::CreateGraphicsFactory());
+
+  auto brush =
+      graphics_factory->CreateSolidColorBrush(cru::platform::colors::black);
+
+  auto geometry_builder = graphics_factory->CreateGeometryBuilder();
+  geometry_builder->ParseAndApplySvgPathData(
+      uR"(
+M8.5 5.5a.5.5 0 0 0-1 0v3.362l-1.429 2.38a.5.5 0 1 0 .858.515l1.5-2.5A.5.5 0 0 0 8.5 9V5.5z
+M6.5 0a.5.5 0 0 0 0 1H7v1.07a7.001 7.001 0 0 0-3.273 12.474l-.602.602a.5.5 0 0 0 .707.708l.746-.746A6.97 6.97 0 0 0 8 16a6.97 6.97 0 0 0 3.422-.892l.746.746a.5.5 0 0 0 .707-.708l-.601-.602A7.001 7.001 0 0 0 9 2.07V1h.5a.5.5 0 0 0 0-1h-3zm1.038 3.018a6.093 6.093 0 0 1 .924 0 6 6 0 1 1-.924 0zM0 3.5c0 .753.333 1.429.86 1.887A8.035 8.035 0 0 1 4.387 1.86 2.5 2.5 0 0 0 0 3.5zM13.5 1c-.753 0-1.429.333-1.887.86a8.035 8.035 0 0 1 3.527 3.527A2.5 2.5 0 0 0 13.5 1z
+  )");
+  auto geometry = geometry_builder->Build();
+
+  auto image = graphics_factory->GetImageFactory()->CreateBitmap(160, 160);
+  auto painter = image->CreatePainter();
+
+  painter->ConcatTransform(cru::platform::Matrix::Scale(10, 10));
+  painter->FillGeometry(geometry.get(), brush.get());
+  painter->EndDraw();
+
+  cru::io::CFileStream file_stream("./svg-path-demo.png", "wb");
+
+  graphics_factory->GetImageFactory()->EncodeToStream(
+      image.get(), &file_stream, cru::platform::graphics::ImageFormat::Png,
+      1.0f);
+
+  return 0;
+}
-- 
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