From 97ad23566edf1e276f090a74d8572c89e9ae0f99 Mon Sep 17 00:00:00 2001
From: liuxiaolun <xland@live.cn>
Date: Fri, 3 Mar 2023 17:09:25 +0800
Subject: [PATCH] dynamic button label

---
 RedRedStar/include/RRS/Button.h        |  6 ++++--
 RedRedStar/include/RRS/Element.h       | 13 ++++++++++---
 RedRedStar/include/RRS/EventCallback.h |  2 +-
 RedRedStar/include/RRS/EventListener.h |  2 +-
 RedRedStar/include/RRS/Label.h         |  2 +-
 RedRedStar/include/RRS/Panel.h         |  1 +
 RedRedStar/include/RRS/Window.h        | 11 +++--------
 RedRedStar/src/Button.cpp              | 12 ++++--------
 RedRedStar/src/Element.cpp             |  8 +++++++-
 RedRedStar/src/EventCallback.cpp       |  2 +-
 RedRedStar/src/EventListener.cpp       |  4 ++--
 RedRedStar/src/Label.cpp               |  4 ++--
 RedRedStar/src/Panel.cpp               | 12 ++++++++++--
 RedRedStar/src/Window.cpp              |  4 ++++
 RedRedStar/src/WindowNative.cpp        |  9 +++++++--
 Sample/HelloWorld/main.cpp             | 17 +++++++----------
 16 files changed, 65 insertions(+), 44 deletions(-)

diff --git a/RedRedStar/include/RRS/Button.h b/RedRedStar/include/RRS/Button.h
index 7fc770a..2137b82 100644
--- a/RedRedStar/include/RRS/Button.h
+++ b/RedRedStar/include/RRS/Button.h
@@ -2,15 +2,17 @@
 #include "Panel.h"
 #include "Color.h"
 #include <memory>
+#include <string>
 namespace RRS {
 	class Panel;
 	class Label;
 	class Button : public Panel
 	{
 	public:
-		Button();
+		Button(std::wstring label);
 		~Button();
-
+	private:
+		std::wstring labelStr;
 	};
 }
 
diff --git a/RedRedStar/include/RRS/Element.h b/RedRedStar/include/RRS/Element.h
index ecaa2f8..ee84968 100644
--- a/RedRedStar/include/RRS/Element.h
+++ b/RedRedStar/include/RRS/Element.h
@@ -19,14 +19,21 @@ namespace RRS {
 		/// <summary>
 		/// show the element
 		/// </summary>
-		void Hide();			
-		virtual void calculatePosition();
+		void Hide();
 		virtual void SetIsMouseEnter(int x, int y);
+		virtual void CalculatePosition();
 		bool GetIsMouseEnter();
+		/// <summary>
+		/// 当子元素被添加到父元素内，再把父元素添加到窗口内，此时子元素的ownerWindow为空
+		/// 我们通过子元素的GetOwnerWindow方法获取ownerWindow时，会遍历它的父元素，直到找到ownerWindow为止
+		/// 获取到子元素的ownerWindow后，这个指针会被缓存下来，下次就不用再执行遍历操作了
+		/// </summary>
+		/// <returns></returns>
 		Window* GetOwnerWindow();
 		Element* GetParentElement();
+		virtual void EmitClickEvent();
 		void SetParentElement(Element* element);
-		
+	protected:
 	private:
 		friend Window;
 		bool isMouseEnter = false;
diff --git a/RedRedStar/include/RRS/EventCallback.h b/RedRedStar/include/RRS/EventCallback.h
index 7700f1c..0c3a787 100644
--- a/RedRedStar/include/RRS/EventCallback.h
+++ b/RedRedStar/include/RRS/EventCallback.h
@@ -7,7 +7,7 @@ namespace RRS {
 	class EventCallback
 	{
 	public:
-		EventCallback(std::function<void(EventListener*)> callBack);
+		EventCallback(std::function<void(EventListener*)>&& callBack);
 		~EventCallback();
 		void Execute(EventListener* target);
 		int Id;
diff --git a/RedRedStar/include/RRS/EventListener.h b/RedRedStar/include/RRS/EventListener.h
index e388d3e..44d54eb 100644
--- a/RedRedStar/include/RRS/EventListener.h
+++ b/RedRedStar/include/RRS/EventListener.h
@@ -12,7 +12,7 @@ namespace RRS {
 	public:
 		EventListener();
 		~EventListener();
-		virtual int AddEventListener(EventType eventType, std::function<void(EventListener*)> callBack);
+		virtual int AddEventListener(EventType eventType, std::function<void(EventListener*)>&& callBack);
 		virtual void RemoveEventListener(EventType eventType, int callBackId);
 		void EmitEvent(EventType eventType);
 	protected:	
diff --git a/RedRedStar/include/RRS/Label.h b/RedRedStar/include/RRS/Label.h
index eb25683..87be94b 100644
--- a/RedRedStar/include/RRS/Label.h
+++ b/RedRedStar/include/RRS/Label.h
@@ -6,7 +6,7 @@ namespace RRS {
 	class Label:public Element
 	{
 		public:
-			Label(std::wstring&& text);
+			Label(std::wstring text);
 			void Paint(SkCanvas* canvas) override;
 			void SetFontColor(Color fontColor);
 			std::wstring Text;
diff --git a/RedRedStar/include/RRS/Panel.h b/RedRedStar/include/RRS/Panel.h
index 0eda2f1..17f9d09 100644
--- a/RedRedStar/include/RRS/Panel.h
+++ b/RedRedStar/include/RRS/Panel.h
@@ -10,6 +10,7 @@ namespace RRS {
 		~Panel();
 		void Paint(SkCanvas* canvas) override;
 		void SetIsMouseEnter(int x, int y) override;
+		void EmitClickEvent() override;
 		/// <summary>
 		/// Add an element to the window
 		/// </summary>
diff --git a/RedRedStar/include/RRS/Window.h b/RedRedStar/include/RRS/Window.h
index 0beb105..3f9f691 100644
--- a/RedRedStar/include/RRS/Window.h
+++ b/RedRedStar/include/RRS/Window.h
@@ -50,7 +50,7 @@ namespace RRS {
 		/// Add an element to the window
 		/// </summary>
 		void AddChildElement(std::shared_ptr<Element> element);
-
+		void SetTitle(std::wstring& title);
 		void SetSize(float w, float h) override;
 		float GetWidth() override;
 		float GetHeight() override;
@@ -92,13 +92,7 @@ namespace RRS {
 		/// is window shown in the center of the screen
 		/// </summary>
 		bool ShowInCenterScreen = true;
-		/// <summary>
-		/// window title
-		/// </summary>
-		std::wstring Title = L"Window";
-		/// <summary>
-		/// 
-		/// </summary>
+		
 		std::vector<std::shared_ptr<Element>> Children;
 		Color BackgroundColor;		
 	protected:
@@ -150,5 +144,6 @@ namespace RRS {
 		int heightMinimum = 600;
 		int widthMaximum = 2000;
 		int heightMaximum = 1400;
+		std::wstring title = L"Window";
 	};
 }
\ No newline at end of file
diff --git a/RedRedStar/src/Button.cpp b/RedRedStar/src/Button.cpp
index c4d6cdf..6ef966b 100644
--- a/RedRedStar/src/Button.cpp
+++ b/RedRedStar/src/Button.cpp
@@ -7,23 +7,19 @@
 #include <Windows.h>
 
 namespace RRS {
-	Button::Button() 
+	Button::Button(std::wstring labelStr): labelStr {labelStr}
 	{
+		
 		SetBackgroundColor(GetColor(88, 28, 156));
 		SetBackgroundColorHover(GetColor(28, 88, 156));
 		SetFlexDirection(FlexDirection::Column);
 		SetJustifyContent(JustifyContent::Center);
 		this->SetBorderRadius(4.f);
-		auto label = std::make_shared<Label>(L"Hello 世界");
+		auto label = std::make_shared<Label>(labelStr);
 		label->SetFontColor(GetColor(255, 255, 255));
 		label->SetAlignSelf(LayoutAlign::Center);
 		AddChildElement(label);	
-		SetSize(label->GetWidth() + 50, 60);
-
-		
-		AddEventListener(EventType::Click, [this](EventListener* arg) {
-			InvalidateRect(this->GetOwnerWindow()->Hwnd, nullptr, false);
-		});
+		SetSize(label->GetWidth() + 50, 60);		
 	}
 	Button::~Button()
 	{
diff --git a/RedRedStar/src/Element.cpp b/RedRedStar/src/Element.cpp
index c8d07b4..3e5140a 100644
--- a/RedRedStar/src/Element.cpp
+++ b/RedRedStar/src/Element.cpp
@@ -18,7 +18,13 @@ namespace RRS {
 	void Element::Hide() {
 		//todo
 	}
-	void Element::calculatePosition()
+	void Element::EmitClickEvent()
+	{
+		if (isMouseEnter) {
+			EmitEvent(RRS::EventType::Click);
+		}
+	}
+	void Element::CalculatePosition()
 	{
 		if (parentElement) {
 			xAbsolute = parentElement->xAbsolute + GetXOffset();
diff --git a/RedRedStar/src/EventCallback.cpp b/RedRedStar/src/EventCallback.cpp
index 6a30c19..d56b08f 100644
--- a/RedRedStar/src/EventCallback.cpp
+++ b/RedRedStar/src/EventCallback.cpp
@@ -2,7 +2,7 @@
 #include <random>
 namespace RRS {
 	static int index = 0;
-	EventCallback::EventCallback(std::function<void(EventListener*)> callBack)
+	EventCallback::EventCallback(std::function<void(EventListener*)>&& callBack)
 		:callBack{ callBack },Id{index++}
 	{
 		
diff --git a/RedRedStar/src/EventListener.cpp b/RedRedStar/src/EventListener.cpp
index 3c5c78e..a737e79 100644
--- a/RedRedStar/src/EventListener.cpp
+++ b/RedRedStar/src/EventListener.cpp
@@ -12,9 +12,9 @@ namespace RRS {
 	{
 	}
 	//todo 这些都是同步事件，要搞一套异步事件出来
-	int EventListener::AddEventListener(EventType eventType, std::function<void(EventListener*)> callBack)
+	int EventListener::AddEventListener(EventType eventType, std::function<void(EventListener*)>&& callBack)
 	{
-		std::shared_ptr<EventCallback> functor = std::make_shared<EventCallback>(callBack);
+		std::shared_ptr<EventCallback> functor = std::make_shared<EventCallback>(std::move(callBack));
 		dispatcher.insert({ eventType ,functor });
 		return functor->Id;
 	}
diff --git a/RedRedStar/src/Label.cpp b/RedRedStar/src/Label.cpp
index c1f652d..7090164 100644
--- a/RedRedStar/src/Label.cpp
+++ b/RedRedStar/src/Label.cpp
@@ -5,7 +5,7 @@
 #include "../include/RRS/Layout.h"
 #include "modules/skparagraph/include/TextStyle.h"
 namespace RRS {
-Label::Label(std::wstring&& text)
+Label::Label(std::wstring text)
 	:Text {text}
 	,font{new SkFont(SkTypeface::MakeFromName("STSong", SkFontStyle::Normal()),20)} //Microsoft Yahei
 	,fontColor { GetColor(0, 0, 0) }
@@ -22,7 +22,7 @@ void Label::SetFontColor(Color fontColor)
 }
 void Label::Paint(SkCanvas* canvas)
 {
-	calculatePosition();
+	CalculatePosition();
 	SkPaint paint;
 	paint.setColor(fontColor);
 	paint.setAntiAlias(true);
diff --git a/RedRedStar/src/Panel.cpp b/RedRedStar/src/Panel.cpp
index 92e4be3..4130123 100644
--- a/RedRedStar/src/Panel.cpp
+++ b/RedRedStar/src/Panel.cpp
@@ -13,6 +13,7 @@ namespace RRS {
 	}
 	Panel::~Panel()
 	{
+		
 	}
 	void Panel::regMouseHoverEvent()
 	{
@@ -38,8 +39,15 @@ namespace RRS {
 		{
 			backgroundColor = color;
 			regMouseHoverEvent();
+		}		
+	}
+	void Panel::EmitClickEvent()
+	{
+		Element::EmitClickEvent();
+		for (auto& item : children)
+		{
+			item->EmitClickEvent();
 		}
-		
 	}
 	void Panel::SetBackgroundColorHover(Color color)
 	{
@@ -56,7 +64,7 @@ namespace RRS {
 	}
 	void Panel::Paint(SkCanvas* canvas)
 	{
-		calculatePosition();
+		CalculatePosition();
 		SkPaint paint;
 		paint.setAntiAlias(true);
 		paint.setColor(GetIsMouseEnter()?backgroundColor:backgroundColorHover);
diff --git a/RedRedStar/src/Window.cpp b/RedRedStar/src/Window.cpp
index d57b640..f0b5ea7 100644
--- a/RedRedStar/src/Window.cpp
+++ b/RedRedStar/src/Window.cpp
@@ -12,6 +12,10 @@ namespace RRS
 	{
 		App::Get()->Windows.push_back(this);
 	}
+	void Window::SetTitle(std::wstring& title)
+	{
+		this->title = title;
+	}
 	void Window::SetSize(float w, float h)
 	{
 		if (w < widthMinimum) {
diff --git a/RedRedStar/src/WindowNative.cpp b/RedRedStar/src/WindowNative.cpp
index 40e6b3c..aec9a74 100644
--- a/RedRedStar/src/WindowNative.cpp
+++ b/RedRedStar/src/WindowNative.cpp
@@ -51,7 +51,7 @@ namespace RRS {
 			XWindow = (screenRect.right - width) / 2;
 			YWindow = (screenRect.bottom - height) / 2;
 		}
-		Hwnd = CreateWindow(windowClassName.c_str(), Title.c_str(), WS_OVERLAPPEDWINDOW, XWindow, YWindow, width, height,
+		Hwnd = CreateWindow(windowClassName.c_str(), title.c_str(), WS_OVERLAPPEDWINDOW, XWindow, YWindow, width, height,
 			nullptr, nullptr, App::Get()->HInstance, nullptr);
 		if (!Hwnd)
 		{
@@ -93,6 +93,12 @@ namespace RRS {
 			Close();
 			return 0;
 		}
+		case WM_LBUTTONUP: {
+			for (auto element : Children)
+			{
+				element->EmitClickEvent();
+			}
+		}
 		case WM_NCHITTEST: {
 			return hitTest(hwnd, lParam);
 		}
@@ -139,7 +145,6 @@ namespace RRS {
 	}
 	void Window::mouseMove(int x, int y)
 	{
-		bool flag = false;
 		for (auto element : Children)
 		{
 			element->SetIsMouseEnter(x, y);
diff --git a/Sample/HelloWorld/main.cpp b/Sample/HelloWorld/main.cpp
index e572b52..e6dc7d7 100644
--- a/Sample/HelloWorld/main.cpp
+++ b/Sample/HelloWorld/main.cpp
@@ -1,22 +1,24 @@
 #include <Windows.h>
-#include <memory>
 #include <RRS/App.h>
 #include <RRS/CommonType.h>
 #include <RRS/Window.h>
 #include <RRS/Button.h>
-#include <functional>
 
 using namespace RRS;
 int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine, _In_ int nCmdShow) 
 {
 	App::Init(hInstance);
+	std::wstring hello = L"Hello 世界！";
 	auto win = std::make_unique<Window>();
-	win->Title = L"Hello World";
+	win->SetTitle(hello);
 	win->SetFlexDirection(FlexDirection::Column);
 	win->SetJustifyContent(JustifyContent::Center);
-	win->AddEventListener(EventType::Loaded, [&win](EventListener* arg) {
-		auto btn = std::make_shared<Button>();
+	win->AddEventListener(EventType::Loaded, [&win,&hello](EventListener* arg) {		
+		auto btn = std::make_shared<Button>(hello);
 		btn->SetAlignSelf(LayoutAlign::Center);
+		btn->AddEventListener(EventType::Click, [&win,&hello](EventListener* arg) {
+			MessageBox(win->Hwnd, hello.c_str(), L"系统提示", MB_ICONWARNING | MB_OK | MB_DEFBUTTON1);
+		});
 		win->AddChildElement(btn);
 		win->Show();
 	});
@@ -24,10 +26,5 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
 		App::Quit();
 	});
 	win->Load();
-
-	//If you want to implement your own window class to gain more control, read the following code.
-	//auto win = std::make_unique<WindowHelloWorld>();
-	//win->Load();
-
 	return App::Exec();
 }
\ No newline at end of file