From d9a3b8c14b9ab1bc591ca7c373daaf7141d2d098 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 24 Feb 2022 15:40:46 +0800
Subject: ...

---
 .../ui/mapper/style/PreferredSizeStylerMapper.h    | 26 ++++++++++++++++++++++
 include/cru/ui/style/Styler.h                      | 21 +++++++++++++++++
 src/ui/CMakeLists.txt                              |  1 +
 src/ui/mapper/MapperRegistry.cpp                   |  2 ++
 src/ui/mapper/style/PreferredSizeStylerMapper.cpp  | 26 ++++++++++++++++++++++
 src/ui/style/Styler.cpp                            |  4 ++++
 6 files changed, 80 insertions(+)
 create mode 100644 include/cru/ui/mapper/style/PreferredSizeStylerMapper.h
 create mode 100644 src/ui/mapper/style/PreferredSizeStylerMapper.cpp

diff --git a/include/cru/ui/mapper/style/PreferredSizeStylerMapper.h b/include/cru/ui/mapper/style/PreferredSizeStylerMapper.h
new file mode 100644
index 00000000..ac52240d
--- /dev/null
+++ b/include/cru/ui/mapper/style/PreferredSizeStylerMapper.h
@@ -0,0 +1,26 @@
+#pragma once
+#include "../Mapper.h"
+#include "cru/ui/mapper/style/IStylerMapper.h"
+#include "cru/ui/style/Styler.h"
+
+namespace cru::ui::mapper::style {
+class CRU_UI_API PreferredSizeStylerMapper
+    : public BasicPtrMapper<ui::style::PreferredSizeStyler>,
+      public virtual IStylerMapper {
+ public:
+  CRU_DEFAULT_CONSTRUCTOR_DESTRUCTOR(PreferredSizeStylerMapper)
+
+ public:
+  bool SupportMapFromXml() override { return true; }
+  bool XmlElementIsOfThisType(xml::XmlElementNode* node) override;
+
+  ClonablePtr<ui::style::Styler> MapStylerFromXml(
+      xml::XmlElementNode* node) override {
+    return MapFromXml(node);
+  }
+
+ protected:
+  ClonablePtr<ui::style::PreferredSizeStyler> DoMapFromXml(
+      xml::XmlElementNode* node) override;
+};
+}  // namespace cru::ui::mapper::style
diff --git a/include/cru/ui/style/Styler.h b/include/cru/ui/style/Styler.h
index 29c19975..4759c2ea 100644
--- a/include/cru/ui/style/Styler.h
+++ b/include/cru/ui/style/Styler.h
@@ -3,6 +3,7 @@
 #include "ApplyBorderStyleInfo.h"
 #include "cru/common/ClonablePtr.h"
 #include "cru/platform/gui/Cursor.h"
+#include "cru/ui/render/MeasureRequirement.h"
 
 #include <memory>
 #include <vector>
@@ -91,4 +92,24 @@ class CRU_UI_API CursorStyler : public Styler {
  private:
   std::shared_ptr<platform::gui::ICursor> cursor_;
 };
+
+class CRU_UI_API PreferredSizeStyler : public Styler {
+ public:
+  static ClonablePtr<PreferredSizeStyler> Create(render::MeasureSize size) {
+    return ClonablePtr<PreferredSizeStyler>(new PreferredSizeStyler(size));
+  }
+
+  explicit PreferredSizeStyler(render::MeasureSize size) : size_(size) {}
+
+  void Apply(controls::Control* control) const override;
+
+  PreferredSizeStyler* Clone() const override {
+    return new PreferredSizeStyler(size_);
+  }
+
+  render::MeasureSize GetPreferredSize() const { return size_; }
+
+ private:
+  render::MeasureSize size_;
+};
 }  // namespace cru::ui::style
diff --git a/src/ui/CMakeLists.txt b/src/ui/CMakeLists.txt
index 84f67407..2e3cd547 100644
--- a/src/ui/CMakeLists.txt
+++ b/src/ui/CMakeLists.txt
@@ -46,6 +46,7 @@ add_library(cru_ui SHARED
 	mapper/style/HoverConditionMapper.cpp
 	mapper/style/NoConditionMapper.cpp
 	mapper/style/OrConditionMapper.cpp
+	mapper/style/PreferredSizeStylerMapper.cpp
 	mapper/style/StyleRuleMapper.cpp
 	mapper/style/StyleRuleSetMapper.cpp
 	render/BorderRenderObject.cpp
diff --git a/src/ui/mapper/MapperRegistry.cpp b/src/ui/mapper/MapperRegistry.cpp
index afbbc8b9..b70418ef 100644
--- a/src/ui/mapper/MapperRegistry.cpp
+++ b/src/ui/mapper/MapperRegistry.cpp
@@ -17,6 +17,7 @@
 #include "cru/ui/mapper/style/HoverConditionMapper.h"
 #include "cru/ui/mapper/style/NoConditionMapper.h"
 #include "cru/ui/mapper/style/OrConditionMapper.h"
+#include "cru/ui/mapper/style/PreferredSizeStylerMapper.h"
 #include "cru/ui/mapper/style/StyleRuleMapper.h"
 #include "cru/ui/mapper/style/StyleRuleSetMapper.h"
 
@@ -47,6 +48,7 @@ MapperRegistry::MapperRegistry() {
   RegisterMapper(new HoverConditionMapper());
   RegisterMapper(new NoConditionMapper());
   RegisterMapper(new OrConditionMapper());
+  RegisterMapper(new PreferredSizeStylerMapper());
   RegisterMapper(new StyleRuleMapper());
   RegisterMapper(new StyleRuleSetMapper());
 }
diff --git a/src/ui/mapper/style/PreferredSizeStylerMapper.cpp b/src/ui/mapper/style/PreferredSizeStylerMapper.cpp
new file mode 100644
index 00000000..b4382c19
--- /dev/null
+++ b/src/ui/mapper/style/PreferredSizeStylerMapper.cpp
@@ -0,0 +1,26 @@
+#include "cru/ui/mapper/style/PreferredSizeStylerMapper.h"
+#include "cru/ui/render/MeasureRequirement.h"
+#include "cru/ui/style/Styler.h"
+
+namespace cru::ui::mapper::style {
+bool PreferredSizeStylerMapper::XmlElementIsOfThisType(
+    xml::XmlElementNode* node) {
+  return node->GetTag().CaseInsensitiveEqual(u"PreferredSizeStyler");
+}
+
+ClonablePtr<ui::style::PreferredSizeStyler>
+PreferredSizeStylerMapper::DoMapFromXml(xml::XmlElementNode* node) {
+  render::MeasureSize size;
+  auto width_attribute = node->GetOptionalAttributeCaseInsensitive(u"width");
+  if (width_attribute) {
+    size.width = width_attribute->ParseToFloat();
+  }
+
+  auto height_attribute = node->GetOptionalAttributeCaseInsensitive(u"height");
+  if (height_attribute) {
+    size.height = height_attribute->ParseToFloat();
+  }
+
+  return ui::style::PreferredSizeStyler::Create(size);
+}
+}  // namespace cru::ui::mapper::style
diff --git a/src/ui/style/Styler.cpp b/src/ui/style/Styler.cpp
index 72e522e0..7085fd3e 100644
--- a/src/ui/style/Styler.cpp
+++ b/src/ui/style/Styler.cpp
@@ -26,4 +26,8 @@ ClonablePtr<CursorStyler> CursorStyler::Create(
 void CursorStyler::Apply(controls::Control *control) const {
   control->SetCursor(cursor_);
 }
+
+void PreferredSizeStyler::Apply(controls::Control *control) const {
+  control->SetPreferredSize(size_);
+}
 }  // namespace cru::ui::style
-- 
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