Move windows to uptr. Add simple text editing.

src/ui_elements/widgets/Button.cpp

@@ -2,43 +2,42 @@
 #include <iostream>
 
 Button::Button()
-	: Widget(),
-	  mLabel()
+    : Widget(),
+      mLabel()
 {
 
 }
 
-std::shared_ptr<Button> Button::Create()
+std::unique_ptr<Button> Button::Create()
 {
-	return std::make_shared<Button>();
+    return std::make_unique<Button>();
 }
 
 void Button::SetLabel(const std::string& text)
 {
-	mLabel = text;
+    mLabel = text;
 }
 
-void Button::OnMyMouseEvent(MouseEventPtr event)
+void Button::OnMyMouseEvent(const MouseEvent* event)
 {
-	if(event->GetAction() == MouseEvent::Action::Pressed)
-	{
-		std::cout << "Clicked !!" << std::endl;
-		SetBackgroundColor(Color::Create(0, 255, 0));
-	}
+    if(event->GetAction() == MouseEvent::Action::Pressed)
+    {
+        std::cout << "Clicked !!" << std::endl;
+        SetBackgroundColor(Color::Create(0, 255, 0));
+    }
 }
 
-void Button::OnPaintEvent(PaintEventPtr event)
+void Button::OnPaintEvent(const PaintEvent* event)
 {
-	mLayers.clear();
-	AddBackground(event);
-
-	if(!mLabel.empty())
-	{
-		auto middle = DiscretePoint(mLocation.GetX() + mWidth/2,
-				mLocation.GetY() + mHeight/2);
-		auto text = TextElement::Create(mLabel, middle);
-		auto textLayer = VisualLayer::Create();
-		textLayer->SetText(text);
-		mLayers.push_back(textLayer);
-	}
+    mMyLayers.clear();
+    AddBackground(event);
+    if(!mLabel.empty())
+    {
+        auto middle = DiscretePoint(mLocation.GetX() + mWidth/2,
+                mLocation.GetY() + mHeight/2);
+        auto textLayer = VisualLayer::Create();
+        textLayer->SetText(TextElement::Create(mLabel, middle));
+        mMyLayers.push_back(std::move(textLayer));
+    }
+    CopyMyLayers();
 }

src/ui_elements/widgets/Button.h

@@ -5,20 +5,20 @@
 class Button : public Widget
 {
 private:
-	std::string mLabel;
+    std::string mLabel;
 
 public:
-	Button();
+    Button();
 
-	void SetLabel(const std::string& text);
+    static std::unique_ptr<Button> Create();
 
-	static std::shared_ptr<Button> Create();
+    void SetLabel(const std::string& text);
 
-	void OnPaintEvent(PaintEventPtr event);
+    void OnPaintEvent(const PaintEvent* event) override;
 
 protected:
 
-	void OnMyMouseEvent(MouseEventPtr event);
+    void OnMyMouseEvent(const MouseEvent* event) override;
 };
 
-using ButtonPtr = std::shared_ptr<Button>;
+using ButtonUPtr = std::unique_ptr<Button>;

src/ui_elements/widgets/HorizontalSpacer.cpp

@@ -1,33 +1,34 @@
 #include "HorizontalSpacer.h"
 
+#include <algorithm>
+
 HorizontalSpacer::HorizontalSpacer()
-	: Widget()
+    : Widget()
 {
 
 }
 
-std::shared_ptr<HorizontalSpacer> HorizontalSpacer::Create()
+std::unique_ptr<HorizontalSpacer> HorizontalSpacer::Create()
 {
-	return std::make_shared<HorizontalSpacer>();
+    return std::make_unique<HorizontalSpacer>();
 }
 
-void HorizontalSpacer::AddChildLayers(PaintEventPtr event)
+void HorizontalSpacer::AddChildLayers(const PaintEvent* event)
 {
-	unsigned delta = mHeight / mChildren.size();
-	for(std::size_t idx=0; idx<mChildren.size(); idx++)
-	{
-		auto child = mChildren[idx];
-		child->SetSize(mWidth, delta);
-		child->SetLocation(DiscretePoint(mLocation.GetX(), mLocation.GetY() + delta*idx));
-		child->OnPaintEvent(event);
-		auto layers = child->GetLayers();
-		mLayers.insert(mLayers.end(), layers.begin(), layers.end());
-	}
+    mLayers.clear();
+    unsigned delta = mHeight / mChildren.size();
+    for(std::size_t idx=0; idx<mChildren.size(); idx++)
+    {
+        auto& child = mChildren[idx];
+        child->SetSize(mWidth, delta);
+        child->SetLocation(DiscretePoint(mLocation.GetX(), mLocation.GetY() + delta*idx));
+        child->OnPaintEvent(event);
+        auto layers = child->GetLayers();
+        mLayers.insert(mLayers.end(), layers.begin(), layers.end());
+    }
 }
 
-void HorizontalSpacer::OnPaintEvent(PaintEventPtr event)
+void HorizontalSpacer::OnPaintEvent(const PaintEvent* event)
 {
-	mLayers.clear();
-
-	AddChildLayers(event);
+    AddChildLayers(event);
 }

src/ui_elements/widgets/HorizontalSpacer.h

@@ -6,13 +6,13 @@ class HorizontalSpacer : public Widget
 {
 
 public:
-	HorizontalSpacer();
+    HorizontalSpacer();
 
-	static std::shared_ptr<HorizontalSpacer> Create();
+    static std::unique_ptr<HorizontalSpacer> Create();
 
-	void AddChildLayers(PaintEventPtr event) override;
+    void AddChildLayers(const PaintEvent* event) override;
 
-	void OnPaintEvent(PaintEventPtr event) override;
+    void OnPaintEvent(const PaintEvent* event) override;
 };
 
-using HorizontalSpacerPtr = std::shared_ptr<HorizontalSpacer>;
+using HorizontalSpacerUPtr = std::unique_ptr<HorizontalSpacer>;

src/ui_elements/widgets/Label.cpp

@@ -2,34 +2,34 @@
 #include "TextElement.h"
 
 Label::Label()
-	: Widget(),
-	  mLabel()
+    : Widget(),
+      mLabel()
 {
 
 }
 
-std::shared_ptr<Label> Label::Create()
+std::unique_ptr<Label> Label::Create()
 {
-	return std::make_shared<Label>();
+    return std::make_unique<Label>();
 }
 
 void Label::SetLabel(const std::string& text)
 {
-	mLabel = text;
+    mLabel = text;
 }
 
-void Label::OnPaintEvent(PaintEventPtr event)
+void Label::OnPaintEvent(const PaintEvent* event)
 {
-	mLayers.clear();
-	AddBackground(event);
+    mMyLayers.clear();
+    AddBackground(event);
 
-	if(!mLabel.empty())
-	{
-		auto middle = DiscretePoint(mLocation.GetX() + mWidth/2,
-				mLocation.GetY() + mHeight/2);
-		auto text = TextElement::Create(mLabel, middle);
-		auto textLayer = VisualLayer::Create();
-		textLayer->SetText(text);
-		mLayers.push_back(textLayer);
-	}
+    if(!mLabel.empty())
+    {
+        auto middle = DiscretePoint(mLocation.GetX() + mWidth/2,
+                mLocation.GetY() + mHeight/2);
+        auto textLayer = VisualLayer::Create();
+        textLayer->SetText(TextElement::Create(mLabel, middle));
+        mMyLayers.push_back(std::move(textLayer));
+    }
+    CopyMyLayers();
 }

src/ui_elements/widgets/Label.h

@@ -6,17 +6,17 @@ class Label : public Widget
 {
 private:
 
-	std::string mLabel;
+    std::string mLabel;
 
 public:
 
-	Label();
+    Label();
 
-	void SetLabel(const std::string& text);
+    static std::unique_ptr<Label> Create();
 
-	static std::shared_ptr<Label> Create();
+    void SetLabel(const std::string& text);
 
-	void OnPaintEvent(PaintEventPtr event);
+    void OnPaintEvent(const PaintEvent* event) override;
 };
 
-using LabelPtr = std::shared_ptr<Label>;
+using LabelUPtr = std::unique_ptr<Label>;

src/ui_elements/widgets/TextBox.cpp

@@ -0,0 +1,97 @@
+#include "TextBox.h"
+#include "TextElement.h"
+#include <string>
+#include <sstream>
+
+TextBox::TextBox()
+    : Widget(),
+      mContent(),
+      mCaps(false)
+{
+    mBackgroundColor = Color::Create(200, 200, 200);
+}
+
+std::unique_ptr<TextBox> TextBox::Create()
+{
+    return std::make_unique<TextBox>();
+}
+
+void TextBox::SetContent(const std::string& text)
+{
+    mContent = text;
+}
+
+std::string TextBox::GetContent() const
+{
+    return mContent;
+}
+
+void TextBox::AppendContent(const std::string& text)
+{
+    mContent += text;
+}
+
+bool TextBox::OnMyKeyboardEvent(const KeyboardEvent* event)
+{
+    if(!event) return false;
+
+    const auto keyString = event->GetKeyString();
+    if (keyString == "KEY_RETURN")
+    {
+        AppendContent("\n");
+    }
+    else if (keyString == "KEY_BACK")
+    {
+        mContent = mContent.substr(0, mContent.size()-1);
+    }
+    else if (keyString == "KEY_SPACE")
+    {
+        AppendContent(" ");
+    }
+    else if (keyString == "KEY_CAPS")
+    {
+        mCaps = !mCaps;
+    }
+    else
+    {
+        if (mCaps && !keyString.empty())
+        {
+            const char c = std::toupper(keyString[0]);
+            AppendContent(std::string(&c));
+        }
+        else
+        {
+            AppendContent(keyString);
+        }
+    }
+
+    return true;
+}
+
+void TextBox::OnPaintEvent(const PaintEvent* event)
+{
+    mMyLayers.clear();
+    AddBackground(event);
+
+    double offset = 0;
+    if(!mContent.empty())
+    {
+        std::stringstream stream(mContent);
+        std::string segment;
+        std::vector<std::string> seglist;
+        while(std::getline(stream, segment, '\n'))
+        {
+           seglist.push_back(segment);
+        }
+        for(const auto& line : seglist)
+        {
+            auto loc = DiscretePoint(mLocation.GetX() + mWidth/10,
+                    mLocation.GetY() + mHeight/10 + offset);
+            auto textLayer = VisualLayer::Create();
+            textLayer->SetText(TextElement::Create(line, loc));
+            mMyLayers.push_back(std::move(textLayer));
+            offset += 15;
+        }
+    }
+    CopyMyLayers();
+}

src/ui_elements/widgets/TextBox.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "Widget.h"
+
+class TextBox : public Widget
+{
+private:
+
+    std::string mContent;
+    bool mCaps;
+
+public:
+
+    TextBox();
+
+    static std::unique_ptr<TextBox> Create();
+
+    void SetContent(const std::string& text);
+
+    std::string GetContent() const;
+
+    void AppendContent(const std::string& text);
+
+    void OnPaintEvent(const PaintEvent* event) override;
+
+    bool OnMyKeyboardEvent(const KeyboardEvent* event) override;
+};
+
+using TextBoxUPtr = std::unique_ptr<TextBox>;

src/ui_elements/widgets/Widget.cpp

@@ -1,13 +1,16 @@
 #include "RectangleElement.h"
 #include "Widget.h"
 
+#include <algorithm>
+
 Widget::Widget()
-	: mLocation(DiscretePoint(0, 0)),
-	  mWidth(100),
-	  mHeight(100),
-	  mLayers(),
-	  mChildren(),
-	  mBackgroundColor(Color::Create(200, 0, 0))
+    : mLocation(DiscretePoint(0, 0)),
+      mWidth(100),
+      mHeight(100),
+      mMyLayers(),
+      mLayers(),
+      mChildren(),
+      mBackgroundColor(Color::Create(200, 0, 0))
 {
 
 }
@@ -17,118 +20,148 @@ Widget::~Widget()
 
 }
 
-void Widget::AddWidget(WidgetPtr widget)
+std::unique_ptr<Widget> Widget::Create()
 {
-	mChildren.push_back(widget);
+    return std::make_unique<Widget>();
 }
 
-void Widget::SetSize(unsigned width, unsigned height)
+void Widget::AddWidget(WidgetUPtr widget)
 {
-	mWidth = width;
-	mHeight = height;
+    mChildren.push_back(std::move(widget));
 }
 
-std::shared_ptr<Widget> Widget::Create()
+unsigned Widget::GetWidth() const
 {
-	return std::make_shared<Widget>();
+    return mWidth;
 }
 
-DiscretePoint Widget::GetLocation()
+unsigned Widget::GetHeight() const
 {
-	return mLocation;
+    return mHeight;
 }
 
-std::vector<VisualLayerPtr> Widget::GetLayers()
+DiscretePoint Widget::GetLocation() const
 {
-	return mLayers;
+    return mLocation;
 }
 
-void Widget::AddChildLayers(PaintEventPtr event)
+std::vector<VisualLayer*> Widget::GetLayers() const
 {
-	for(std::size_t idx=0; idx<mChildren.size(); idx++)
-	{
-		auto child = mChildren[idx];
-		child->SetSize(mWidth, mHeight);
-		child->SetLocation(mLocation);
-		child->OnPaintEvent(event);
-		auto layers = child->GetLayers();
-		mLayers.insert(mLayers.end(), layers.begin(), layers.end());
-	}
+    return mLayers;
 }
 
-void Widget::OnPaintEvent(PaintEventPtr event)
+void Widget::CopyMyLayers()
 {
-	mLayers.clear();
-
-	AddBackground(event);
-	AddChildLayers(event);
+    mLayers.clear();
+    mLayers.reserve(mMyLayers.size());
+    auto getRaw = [](const VisualLayerUPtr& uptr){return uptr.get();};
+    std::transform(mMyLayers.begin(), mMyLayers.end(), std::back_inserter(mLayers), getRaw);
 }
 
-bool Widget::Contains(const DiscretePoint& loc)
+void Widget::AddChildLayers(const PaintEvent* event)
 {
-	if(loc.GetX() < mLocation.GetX()) return false;
-	if(loc.GetX() > mLocation.GetX() + mWidth) return false;
-	if(loc.GetY() > mLocation.GetY() + mHeight) return false;
-	if(loc.GetY() < mLocation.GetY()) return false;
-	return true;
+    for(auto& child: mChildren)
+    {
+        child->SetSize(mWidth, mHeight);
+        child->SetLocation(mLocation);
+        child->OnPaintEvent(event);
+        const auto layers = child->GetLayers();
+        mLayers.insert(mLayers.end(), layers.begin(), layers.end());
+    }
 }
 
-bool Widget::OnMouseEvent(MouseEventPtr event)
+void Widget::OnPaintEvent(const PaintEvent* event)
 {
-	bool inChild = false;
-	for(const auto& child : mChildren)
-	{
-		if(child->OnMouseEvent(event))
-		{
-			inChild = true;
-			break;
-		}
-	}
-	if(!inChild)
-	{
-		if(Contains(event->GetClientLocation()))
-		{
-			OnMyMouseEvent(event);
-			return true;
-		}
-		else
-		{
-			return false;
-		}
-	}
-	return true;
+    mMyLayers.clear();
+    AddBackground(event);
+    CopyMyLayers();
+    AddChildLayers(event);
 }
 
-void Widget::OnMyMouseEvent(MouseEventPtr event)
+bool Widget::Contains(const DiscretePoint& loc) const
+{
+    if(loc.GetX() < mLocation.GetX()) return false;
+    if(loc.GetX() > mLocation.GetX() + mWidth) return false;
+    if(loc.GetY() > mLocation.GetY() + mHeight) return false;
+    if(loc.GetY() < mLocation.GetY()) return false;
+    return true;
+}
+
+bool Widget::OnKeyboardEvent(const KeyboardEvent* event)
+{
+    bool inChild = false;
+    for(const auto& child : mChildren)
+    {
+        if(child->OnKeyboardEvent(event))
+        {
+            inChild = true;
+            break;
+        }
+    }
+    if(!inChild)
+    {
+        return OnMyKeyboardEvent(event);
+    }
+    return true;
+}
+
+bool Widget::OnMyKeyboardEvent(const KeyboardEvent* event)
+{
+    return false;
+}
+
+bool Widget::OnMouseEvent(const MouseEvent* event)
+{
+    bool inChild = false;
+    for(const auto& child : mChildren)
+    {
+        if(child->OnMouseEvent(event))
+        {
+            inChild = true;
+            break;
+        }
+    }
+    if(!inChild)
+    {
+        if(Contains(event->GetClientLocation()))
+        {
+            OnMyMouseEvent(event);
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    return true;
+}
+
+void Widget::OnMyMouseEvent(const MouseEvent* event)
 {
 
 }
 
-void Widget::AddBackground(PaintEventPtr event)
+void Widget::AddBackground(const PaintEvent* event)
 {
-	auto shape = RectangleElement::Create(mLocation, mWidth, mHeight);
-	shape->SetFillColor(mBackgroundColor);
-	auto shapeLayer = VisualLayer::Create();
-	shapeLayer->SetShape(shape);
-	mLayers.push_back(shapeLayer);
+    auto shape = RectangleElement::Create(mLocation, mWidth, mHeight);
+    shape->SetFillColor(Color::Create(*mBackgroundColor));
+    auto shapeLayer = VisualLayer::Create();
+    shapeLayer->SetShape(std::move(shape));
+    mMyLayers.push_back(std::move(shapeLayer));
 }
 
-void Widget::SetBackgroundColor(ColorPtr color)
+void Widget::SetBackgroundColor(ColorUPtr color)
 {
-	mBackgroundColor = color;
+    mBackgroundColor = std::move(color);
 }
 
 void Widget::SetLocation(const DiscretePoint& loc)
 {
-	mLocation = loc;
+    mLocation = loc;
 }
 
-unsigned Widget::GetWidth()
+void Widget::SetSize(unsigned width, unsigned height)
 {
-	return mWidth;
-}
-
-unsigned Widget::GetHeight()
-{
-	return mHeight;
+    mWidth = width;
+    mHeight = height;
 }

src/ui_elements/widgets/Widget.h

@@ -8,55 +8,63 @@
 #include "PaintEvent.h"
 #include "Color.h"
 #include "MouseEvent.h"
+#include "KeyboardEvent.h"
 
 class Widget
 {
 protected:
 
-	DiscretePoint mLocation;
-	unsigned mWidth;
-	unsigned mHeight;
-	std::vector<VisualLayerPtr> mLayers;
-	std::vector<std::shared_ptr<Widget> > mChildren;
-	ColorPtr mBackgroundColor;
+    DiscretePoint mLocation;
+    unsigned mWidth;
+    unsigned mHeight;
+    std::vector<VisualLayerUPtr> mMyLayers;
+    std::vector<VisualLayer*> mLayers;
+    std::vector<std::unique_ptr<Widget> > mChildren;
+    ColorUPtr mBackgroundColor;
 
 public:
 
-	Widget();
+    Widget();
 
-	virtual ~Widget();
+    virtual ~Widget();
 
-	void AddWidget(std::shared_ptr<Widget> widget);
+    static std::unique_ptr<Widget> Create();
 
-	void SetBackgroundColor(ColorPtr color);
+    void AddWidget(std::unique_ptr<Widget> widget);
 
-	void SetSize(unsigned mWidth, unsigned mHeight);
+    unsigned GetWidth() const;
 
-	DiscretePoint GetLocation();
+    unsigned GetHeight() const;
 
-	void SetLocation(const DiscretePoint& loc);
+    std::vector<VisualLayer*> GetLayers() const;
 
-	unsigned GetWidth();
+    DiscretePoint GetLocation() const;
 
-	unsigned GetHeight();
+    virtual void OnPaintEvent(const PaintEvent* event);
 
-	std::vector<VisualLayerPtr> GetLayers();
+    virtual bool OnMouseEvent(const MouseEvent* event);
 
-	static std::shared_ptr<Widget> Create();
+    virtual bool OnKeyboardEvent(const KeyboardEvent* event);
 
-	virtual void OnPaintEvent(PaintEventPtr event);
+    bool Contains(const DiscretePoint& loc) const;
 
-	virtual bool OnMouseEvent(MouseEventPtr event);
+    void SetBackgroundColor(ColorUPtr color);
 
-	bool Contains(const DiscretePoint& loc);
+    void SetSize(unsigned mWidth, unsigned mHeight);
+
+    void SetLocation(const DiscretePoint& loc);
 
 protected:
 
-	virtual void OnMyMouseEvent(MouseEventPtr event);
+    virtual bool OnMyKeyboardEvent(const KeyboardEvent* event);
 
-	virtual void AddChildLayers(PaintEventPtr event);
+    virtual void OnMyMouseEvent(const MouseEvent* event);
 
-	virtual void AddBackground(PaintEventPtr event);
+    virtual void AddChildLayers(const PaintEvent* event);
+
+    virtual void AddBackground(const PaintEvent* event);
+
+    void CopyMyLayers();
 };
 
-using WidgetPtr = std::shared_ptr<Widget>;
+using WidgetUPtr = std::unique_ptr<Widget>;

src/ui_elements/widgets/elements/GeometryElement.cpp

@@ -1,36 +1,39 @@
 #include "GeometryElement.h"
 
 GeometryElement::GeometryElement()
-	: mFillColor(Color::Create(255, 255, 255)),
-	  mStrokeColor(Color::Create(0, 0, 0)),
-	  mStrokeThickness(1),
-	  mType(Type::Path)
+    : mFillColor(Color::Create(255, 255, 255)),
+      mStrokeColor(Color::Create(0, 0, 0)),
+      mStrokeThickness(1),
+      mType(Type::Path)
 {
 
 }
 
-ColorPtr GeometryElement::GetFillColor()
+Color* GeometryElement::GetFillColor() const
 {
-	return mFillColor;
+    return mFillColor.get();
 }
-ColorPtr GeometryElement::GetStrokeColor()
+Color* GeometryElement::GetStrokeColor() const
 {
-	return mStrokeColor;
-}
-unsigned GeometryElement::GetStrokeThickness()
-{
-	return mStrokeThickness;
+    return mStrokeColor.get();
 }
 
-void GeometryElement::SetFillColor(ColorPtr color)
+unsigned GeometryElement::GetStrokeThickness() const
 {
-	mFillColor = color;
+    return mStrokeThickness;
 }
-void GeometryElement::SetStrokeColor(ColorPtr color)
+
+void GeometryElement::SetFillColor(ColorUPtr color)
 {
-	mStrokeColor = color;
+    mFillColor = std::move(color);
 }
+
+void GeometryElement::SetStrokeColor(ColorUPtr color)
+{
+    mStrokeColor = std::move(color);
+}
+
 void GeometryElement::SetStrokeThickness(unsigned thickness)
 {
-	mStrokeThickness = thickness;
+    mStrokeThickness = thickness;
 }

src/ui_elements/widgets/elements/GeometryElement.h

@@ -5,35 +5,33 @@
 class GeometryElement
 {
 public:
-
-	enum class Type
-	{
-		Path,
-		Rectangle,
-		Circle,
-		Arc
-	};
+    enum class Type
+    {
+        Path,
+        Rectangle,
+        Circle,
+        Arc
+    };
 
 private:
-
-	ColorPtr mFillColor;
-	ColorPtr mStrokeColor;
-	unsigned mStrokeThickness;
-	Type mType;
+    ColorUPtr mFillColor;
+    ColorUPtr mStrokeColor;
+    unsigned mStrokeThickness;
+    Type mType;
 
 public:
 
-	GeometryElement();
-	virtual ~GeometryElement() = default;
+    GeometryElement();
+    virtual ~GeometryElement() = default;
 
-	ColorPtr GetFillColor();
-	ColorPtr GetStrokeColor();
-	unsigned GetStrokeThickness();
-	virtual Type GetType() = 0;
+    Color* GetFillColor() const;
+    Color* GetStrokeColor() const;
+    unsigned GetStrokeThickness() const;
+    virtual Type GetType() = 0;
 
-	void SetFillColor(ColorPtr color);
-	void SetStrokeColor(ColorPtr color);
-	void SetStrokeThickness(unsigned thickness);
+    void SetFillColor(ColorUPtr color);
+    void SetStrokeColor(ColorUPtr color);
+    void SetStrokeThickness(unsigned thickness);
 };
 
-using GeometryElementPtr = std::shared_ptr<GeometryElement>;
+using GeometryElementUPtr = std::unique_ptr<GeometryElement>;

src/ui_elements/widgets/elements/RectangleElement.cpp

@@ -1,36 +1,36 @@
 #include "RectangleElement.h"
 
 RectangleElement::RectangleElement(const DiscretePoint& loc,
-			unsigned width, unsigned height)
-	: mLocation(loc),
-	  mWidth(width),
-	  mHeight(height)
+            unsigned width, unsigned height)
+    : mLocation(loc),
+      mWidth(width),
+      mHeight(height)
 {
 
 }
 
-std::shared_ptr<RectangleElement> RectangleElement::Create(const DiscretePoint& loc,
-		unsigned width, unsigned height)
+std::unique_ptr<RectangleElement> RectangleElement::Create(const DiscretePoint& loc,
+        unsigned width, unsigned height)
 {
-	return std::make_shared<RectangleElement>(loc, width, height);
+    return std::make_unique<RectangleElement>(loc, width, height);
 }
 
 GeometryElement::Type RectangleElement::GetType()
 {
-	return GeometryElement::Type::Rectangle;
+    return GeometryElement::Type::Rectangle;
 }
 
-DiscretePoint RectangleElement::GetLocation()
+DiscretePoint RectangleElement::GetLocation() const
 {
-	return mLocation;
+    return mLocation;
 }
 
-unsigned RectangleElement::GetWidth()
+unsigned RectangleElement::GetWidth() const
 {
-	return mWidth;
+    return mWidth;
 }
 
-unsigned RectangleElement::GetHeight()
+unsigned RectangleElement::GetHeight() const
 {
-	return mHeight;
+    return mHeight;
 }

src/ui_elements/widgets/elements/RectangleElement.h

@@ -7,23 +7,22 @@
 
 class RectangleElement : public GeometryElement
 {
-	DiscretePoint mLocation;
-	unsigned mWidth;
-	unsigned mHeight;
+    DiscretePoint mLocation;
+    unsigned mWidth;
+    unsigned mHeight;
 
 public:
 
-	RectangleElement(const DiscretePoint& loc,
-			unsigned width, unsigned height);
-	static std::shared_ptr<RectangleElement> Create(const DiscretePoint& loc,
-			unsigned width, unsigned height);
-	GeometryElement::Type GetType() override;
+    RectangleElement(const DiscretePoint& loc, unsigned width, unsigned height);
+    static std::unique_ptr<RectangleElement> Create(const DiscretePoint& loc,
+            unsigned width, unsigned height);
+    GeometryElement::Type GetType() override;
 
-	DiscretePoint GetLocation();
-	unsigned GetWidth();
-	unsigned GetHeight();
+    DiscretePoint GetLocation() const;
+    unsigned GetWidth() const;
+    unsigned GetHeight() const;
 };
 
-using RectangleElementPtr = std::shared_ptr<RectangleElement>;
+using RectangleElementUPtr = std::unique_ptr<RectangleElement>;
 
 

src/ui_elements/widgets/elements/TextElement.cpp

@@ -1,9 +1,9 @@
 #include "TextElement.h"
 
 TextElement::TextElement(const std::string& content, const DiscretePoint& loc)
-	: mContent(content),
-	  mLocation(loc),
-	  mFontLabel("fixed")
+    : mContent(content),
+      mLocation(loc),
+      mFontLabel("fixed")
 {
 
 }
@@ -13,27 +13,27 @@ TextElement::~TextElement()
 
 }
 
-std::shared_ptr<TextElement> TextElement::Create(const std::string& content, const DiscretePoint& loc)
+std::unique_ptr<TextElement> TextElement::Create(const std::string& content, const DiscretePoint& loc)
 {
-	return std::make_shared<TextElement>(content, loc);
+    return std::make_unique<TextElement>(content, loc);
 }
 
-DiscretePoint TextElement::GetLocation()
+DiscretePoint TextElement::GetLocation() const
 {
-	return mLocation;
+    return mLocation;
+}
+
+std::string TextElement::GetFontLabel() const
+{
+    return mFontLabel;
+}
+
+std::string TextElement::GetContent() const
+{
+    return mContent;
 }
 
 void TextElement::SetContent(const std::string& content)
 {
-	mContent = content;
-}
-
-std::string TextElement::GetFontLabel()
-{
-	return mFontLabel;
-}
-
-std::string TextElement::GetContent()
-{
-	return mContent;
+    mContent = content;
 }

src/ui_elements/widgets/elements/TextElement.h

@@ -7,25 +7,25 @@
 
 class TextElement
 {
-	std::string mContent;
-	DiscretePoint mLocation;
-	std::string mFontLabel;
+    std::string mContent;
+    DiscretePoint mLocation;
+    std::string mFontLabel;
 
 public:
 
-	TextElement(const std::string& content, const DiscretePoint& loc);
+    TextElement(const std::string& content, const DiscretePoint& loc);
 
-	~TextElement();
+    ~TextElement();
 
-	static std::shared_ptr<TextElement> Create(const std::string& content, const DiscretePoint& loc);
+    static std::unique_ptr<TextElement> Create(const std::string& content, const DiscretePoint& loc);
 
-	DiscretePoint GetLocation();
+    DiscretePoint GetLocation() const;
 
-	std::string GetContent();
+    std::string GetContent() const;
 
-	void SetContent(const std::string& content);
+    std::string GetFontLabel() const;
 
-	std::string GetFontLabel();
+    void SetContent(const std::string& content);
 };
 
-using TextElementPtr = std::shared_ptr<TextElement>;
+using TextElementUPtr = std::unique_ptr<TextElement>;

src/ui_elements/widgets/elements/VisualLayer.cpp

@@ -1,38 +1,43 @@
 #include "VisualLayer.h"
 
 VisualLayer::VisualLayer()
-	: mShape(),
-	  mText()
+    : mShape(),
+      mText()
 {
 
 }
 
-std::shared_ptr<VisualLayer> VisualLayer::Create()
+std::unique_ptr<VisualLayer> VisualLayer::Create()
 {
-	return std::make_shared<VisualLayer>();
+    return std::make_unique<VisualLayer>();
 }
 
-void VisualLayer::SetShape(GeometryElementPtr shape)
+bool VisualLayer::HasShape() const
 {
-	mShape = shape;
+    return bool(mShape);
 }
-void VisualLayer::SetText(TextElementPtr text)
+
+bool VisualLayer::HasText() const
 {
-	mText = text;
+    return bool(mText);
 }
-bool VisualLayer::HasShape()
+
+GeometryElement* VisualLayer::GetShape() const
 {
-	return bool(mShape);
+    return mShape.get();
 }
-bool VisualLayer::HasText()
+
+TextElement* VisualLayer::GetText() const
 {
-	return bool(mText);
+    return mText.get();
 }
-GeometryElementPtr VisualLayer::GetShape()
+
+void VisualLayer::SetShape(GeometryElementUPtr shape)
 {
-	return mShape;
+    mShape = std::move(shape);
 }
-TextElementPtr VisualLayer::GetText()
+
+void VisualLayer::SetText(TextElementUPtr text)
 {
-	return mText;
+    mText = std::move(text);
 }

src/ui_elements/widgets/elements/VisualLayer.h

@@ -6,21 +6,20 @@
 
 class VisualLayer
 {
-	GeometryElementPtr mShape;
-	TextElementPtr mText;
+    GeometryElementUPtr mShape;
+    TextElementUPtr mText;
 
 public:
 
-	VisualLayer();
+    VisualLayer();
 
-	static std::shared_ptr<VisualLayer> Create();
-
-	void SetShape(GeometryElementPtr shape);
-	void SetText(TextElementPtr text);
-	bool HasShape();
-	bool HasText();
-	GeometryElementPtr GetShape();
-	TextElementPtr GetText();
+    static std::unique_ptr<VisualLayer> Create();
 
+    GeometryElement* GetShape() const;
+    TextElement* GetText() const;
+    bool HasShape() const;
+    bool HasText() const;
+    void SetShape(GeometryElementUPtr shape);
+    void SetText(TextElementUPtr text);
 };
-using VisualLayerPtr = std::shared_ptr<VisualLayer>;
+using VisualLayerUPtr = std::unique_ptr<VisualLayer>;