SDK: Add RichTextAreaWidget (WIP)

ChangeLog.md

@@ -283,6 +283,8 @@ Nazara Development Kit:
 - ⚠️ TextAreaWidget::OnTextAreaCursorMove signal now uses a Vector2ui* position as its second argument (instead of a std::size_t*)
 - Added TextAreaWidget::OnTextAreaSelection
 - ⚠️ Console class is no longer bound to a LuaState and now has a OnCommand signal
+- ⚠️ Made AbstractTextAreaWidget which is inherited by TextAreaWidget
+- ⚠️ Added RichTextAreaWidget
 
 # 0.4:
 

SDK/include/NDK/Console.hpp

@@ -24,6 +24,7 @@ namespace Nz
 
 namespace Ndk
 {
+	class AbstractTextAreaWidget;
 	class Console;
 	class Entity;
 	class ScrollAreaWidget;
@@ -59,7 +60,7 @@ namespace Ndk
 			NazaraSignal(OnCommand, Console* /*console*/, const Nz::String& /*command*/);
 
 		private:
-			void ExecuteInput(const TextAreaWidget* textArea, bool* ignoreDefaultAction);
+			void ExecuteInput(const AbstractTextAreaWidget* textArea, bool* ignoreDefaultAction);
 			void Layout() override;
 
 			struct Line

SDK/include/NDK/Widgets.hpp

@@ -5,6 +5,7 @@
 #ifndef NDK_WIDGETS_GLOBAL_HPP
 #define NDK_WIDGETS_GLOBAL_HPP
 
+#include <NDK/Widgets/AbstractTextAreaWidget.hpp>
 #include <NDK/Widgets/BoxLayout.hpp>
 #include <NDK/Widgets/ButtonWidget.hpp>
 #include <NDK/Widgets/CheckboxWidget.hpp>
@@ -12,6 +13,7 @@
 #include <NDK/Widgets/ImageWidget.hpp>
 #include <NDK/Widgets/LabelWidget.hpp>
 #include <NDK/Widgets/ProgressBarWidget.hpp>
+#include <NDK/Widgets/RichTextAreaWidget.hpp>
 #include <NDK/Widgets/ScrollAreaWidget.hpp>
 #include <NDK/Widgets/TextAreaWidget.hpp>
 

SDK/include/NDK/Widgets/AbstractTextAreaWidget.hpp

@@ -0,0 +1,135 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#pragma once
+
+#ifndef NDK_WIDGETS_ABSTRACTTEXTAREAWIDGET_HPP
+#define NDK_WIDGETS_ABSTRACTTEXTAREAWIDGET_HPP
+
+#include <Nazara/Graphics/TextSprite.hpp>
+#include <Nazara/Utility/AbstractTextDrawer.hpp>
+#include <NDK/BaseWidget.hpp>
+#include <NDK/Widgets/Enums.hpp>
+#include <functional>
+#include <vector>
+
+namespace Ndk
+{
+	class NDK_API AbstractTextAreaWidget : public BaseWidget
+	{
+		public:
+			using CharacterFilter = std::function<bool(char32_t)>;
+
+			AbstractTextAreaWidget(BaseWidget* parent);
+			AbstractTextAreaWidget(const AbstractTextAreaWidget&) = delete;
+			AbstractTextAreaWidget(AbstractTextAreaWidget&&) = default;
+			~AbstractTextAreaWidget() = default;
+
+			virtual void Clear();
+
+			//virtual TextAreaWidget* Clone() const = 0;
+
+			void EnableLineWrap(bool enable = true);
+			inline void EnableMultiline(bool enable = true);
+			inline void EnableTabWriting(bool enable = true);
+
+			inline void Erase(std::size_t glyphPosition);
+			virtual void Erase(std::size_t firstGlyph, std::size_t lastGlyph) = 0;
+			inline void EraseSelection();
+
+			inline const CharacterFilter& GetCharacterFilter() const;
+			inline const Nz::Vector2ui& GetCursorPosition() const;
+			inline Nz::Vector2ui GetCursorPosition(std::size_t glyphIndex) const;
+			inline EchoMode GetEchoMode() const;
+			inline std::size_t GetGlyphIndex() const;
+			inline std::size_t GetGlyphIndex(const Nz::Vector2ui& cursorPosition) const;
+			inline const Nz::String& GetText() const;
+
+			Nz::Vector2ui GetHoveredGlyph(float x, float y) const;
+
+			inline bool HasSelection() const;
+
+			inline bool IsLineWrapEnabled() const;
+			inline bool IsMultilineEnabled() const;
+			inline bool IsReadOnly() const;
+			inline bool IsTabWritingEnabled() const;
+
+			inline void MoveCursor(int offset);
+			inline void MoveCursor(const Nz::Vector2i& offset);
+
+			inline Nz::Vector2ui NormalizeCursorPosition(Nz::Vector2ui cursorPosition) const;
+
+			inline void SetCharacterFilter(CharacterFilter filter);
+			inline void SetCursorPosition(std::size_t glyphIndex);
+			inline void SetCursorPosition(Nz::Vector2ui cursorPosition);
+			inline void SetEchoMode(EchoMode echoMode);
+			inline void SetReadOnly(bool readOnly = true);
+			inline void SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition);
+
+			inline void Write(const Nz::String& text);
+			inline void Write(const Nz::String& text, const Nz::Vector2ui& glyphPosition);
+			virtual void Write(const Nz::String& text, std::size_t glyphPosition) = 0;
+
+			AbstractTextAreaWidget& operator=(const AbstractTextAreaWidget&) = delete;
+			AbstractTextAreaWidget& operator=(AbstractTextAreaWidget&&) = default;
+
+			NazaraSignal(OnTextAreaCursorMove, const AbstractTextAreaWidget* /*textArea*/, Nz::Vector2ui* /*newCursorPosition*/);
+			NazaraSignal(OnTextAreaKeyBackspace, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyDown, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyEnd, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyHome, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyLeft, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyReturn, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyRight, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaKeyUp, const AbstractTextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
+			NazaraSignal(OnTextAreaSelection, const AbstractTextAreaWidget* /*textArea*/, Nz::Vector2ui* /*start*/, Nz::Vector2ui* /*end*/);
+
+		protected:
+			virtual Nz::AbstractTextDrawer& GetTextDrawer() = 0;
+			virtual const Nz::AbstractTextDrawer& GetTextDrawer() const = 0;
+
+			void Layout() override;
+
+			virtual void HandleIndentation(bool add) = 0;
+			virtual void HandleSelectionIndentation(bool add) = 0;
+			virtual void HandleWordCursorMove(bool left) = 0;
+
+			bool IsFocusable() const override;
+			void OnFocusLost() override;
+			void OnFocusReceived() override;
+			bool OnKeyPressed(const Nz::WindowEvent::KeyEvent& key) override;
+			void OnKeyReleased(const Nz::WindowEvent::KeyEvent& key) override;
+			void OnMouseButtonPress(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
+			void OnMouseButtonRelease(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
+			void OnMouseEnter() override;
+			void OnMouseMoved(int x, int y, int deltaX, int deltaY) override;
+			void OnTextEntered(char32_t character, bool repeated) override;
+
+			inline void SetCursorPositionInternal(std::size_t glyphIndex);
+			inline void SetCursorPositionInternal(Nz::Vector2ui cursorPosition);
+
+			void RefreshCursor();
+			virtual void UpdateDisplayText() = 0;
+			void UpdateTextSprite();
+
+			CharacterFilter m_characterFilter;
+			EchoMode m_echoMode;
+			EntityHandle m_cursorEntity;
+			EntityHandle m_textEntity;
+			Nz::TextSpriteRef m_textSprite;
+			Nz::Vector2ui m_cursorPositionBegin;
+			Nz::Vector2ui m_cursorPositionEnd;
+			Nz::Vector2ui m_selectionCursor;
+			std::vector<Nz::SpriteRef> m_cursorSprites;
+			bool m_isLineWrapEnabled;
+			bool m_isMouseButtonDown;
+			bool m_multiLineEnabled;
+			bool m_readOnly;
+			bool m_tabEnabled; // writes (Shift+)Tab character if set to true
+	};
+}
+
+#include <NDK/Widgets/AbstractTextAreaWidget.inl>
+
+#endif // NDK_WIDGETS_ABSTRACTTEXTAREAWIDGET_HPP

SDK/include/NDK/Widgets/AbstractTextAreaWidget.inl

@@ -0,0 +1,252 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Widgets/AbstractTextAreaWidget.hpp>
+
+namespace Ndk
+{
+	inline void AbstractTextAreaWidget::EnableMultiline(bool enable)
+	{
+		m_multiLineEnabled = enable;
+	}
+
+	inline void AbstractTextAreaWidget::EnableTabWriting(bool enable)
+	{
+		m_tabEnabled = enable;
+	}
+
+	inline void AbstractTextAreaWidget::Erase(std::size_t glyphPosition)
+	{
+		Erase(glyphPosition, glyphPosition + 1U);
+	}
+
+	inline void AbstractTextAreaWidget::EraseSelection()
+	{
+		if (!HasSelection())
+			return;
+
+		Erase(GetGlyphIndex(m_cursorPositionBegin), GetGlyphIndex(m_cursorPositionEnd));
+	}
+
+	inline const AbstractTextAreaWidget::CharacterFilter& AbstractTextAreaWidget::GetCharacterFilter() const
+	{
+		return m_characterFilter;
+	}
+
+	inline const Nz::Vector2ui& AbstractTextAreaWidget::GetCursorPosition() const
+	{
+		return m_cursorPositionBegin;
+	}
+
+	Nz::Vector2ui AbstractTextAreaWidget::GetCursorPosition(std::size_t glyphIndex) const
+	{
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		glyphIndex = std::min(glyphIndex, GetTextDrawer().GetGlyphCount());
+
+		std::size_t lineCount = textDrawer.GetLineCount();
+		std::size_t line = 0U;
+		for (std::size_t i = line + 1; i < lineCount; ++i)
+		{
+			if (textDrawer.GetLine(i).glyphIndex > glyphIndex)
+				break;
+
+			line = i;
+		}
+
+		const auto& lineInfo = textDrawer.GetLine(line);
+
+		Nz::Vector2ui cursorPos;
+		cursorPos.y = static_cast<unsigned int>(line);
+		cursorPos.x = static_cast<unsigned int>(glyphIndex - lineInfo.glyphIndex);
+
+		return cursorPos;
+	}
+
+	inline EchoMode AbstractTextAreaWidget::GetEchoMode() const
+	{
+		return m_echoMode;
+	}
+
+	inline std::size_t AbstractTextAreaWidget::GetGlyphIndex() const
+	{
+		return GetGlyphIndex(m_cursorPositionBegin);
+	}
+
+	inline std::size_t AbstractTextAreaWidget::GetGlyphIndex(const Nz::Vector2ui& cursorPosition) const
+	{
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		std::size_t glyphIndex = textDrawer.GetLine(cursorPosition.y).glyphIndex + cursorPosition.x;
+		if (textDrawer.GetLineCount() > cursorPosition.y + 1)
+			glyphIndex = std::min(glyphIndex, textDrawer.GetLine(cursorPosition.y + 1).glyphIndex - 1);
+		else
+			glyphIndex = std::min(glyphIndex, textDrawer.GetGlyphCount());
+
+		return glyphIndex;
+	}
+
+	inline bool AbstractTextAreaWidget::HasSelection() const
+	{
+		return m_cursorPositionBegin != m_cursorPositionEnd;
+	}
+
+	inline bool AbstractTextAreaWidget::IsLineWrapEnabled() const
+	{
+		return m_isLineWrapEnabled;
+	}
+
+	inline bool AbstractTextAreaWidget::IsMultilineEnabled() const
+	{
+		return m_multiLineEnabled;
+	}
+
+	inline bool AbstractTextAreaWidget::IsTabWritingEnabled() const
+	{
+		return m_tabEnabled;
+	}
+
+	inline bool AbstractTextAreaWidget::IsReadOnly() const
+	{
+		return m_readOnly;
+	}
+
+	inline void AbstractTextAreaWidget::MoveCursor(int offset)
+	{
+		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPositionBegin);
+		if (offset >= 0)
+			SetCursorPosition(cursorGlyph + static_cast<std::size_t>(offset));
+		else
+		{
+			std::size_t nOffset = static_cast<std::size_t>(-offset);
+			if (nOffset >= cursorGlyph)
+				SetCursorPosition(0);
+			else
+				SetCursorPosition(cursorGlyph - nOffset);
+		}
+	}
+
+	inline void AbstractTextAreaWidget::MoveCursor(const Nz::Vector2i& offset)
+	{
+		auto ClampOffset = [] (unsigned int cursorPosition, int cursorOffset) -> unsigned int
+		{
+			if (cursorOffset >= 0)
+				return cursorPosition + cursorOffset;
+			else
+			{
+				unsigned int nOffset = static_cast<unsigned int>(-cursorOffset);
+				if (nOffset >= cursorPosition)
+					return 0;
+				else
+					return cursorPosition - nOffset;
+			}
+		};
+
+		Nz::Vector2ui cursorPosition = m_cursorPositionBegin;
+		cursorPosition.x = ClampOffset(static_cast<unsigned int>(cursorPosition.x), offset.x);
+		cursorPosition.y = ClampOffset(static_cast<unsigned int>(cursorPosition.y), offset.y);
+
+		SetCursorPosition(cursorPosition);
+	}
+
+	inline Nz::Vector2ui AbstractTextAreaWidget::NormalizeCursorPosition(Nz::Vector2ui cursorPosition) const
+	{
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		std::size_t lineCount = textDrawer.GetLineCount();
+		if (cursorPosition.y >= lineCount)
+			cursorPosition.y = static_cast<unsigned int>(lineCount - 1);
+
+		const auto& lineInfo = textDrawer.GetLine(cursorPosition.y);
+		if (cursorPosition.y + 1 < lineCount)
+		{
+			const auto& nextLineInfo = textDrawer.GetLine(cursorPosition.y + 1);
+			cursorPosition.x = std::min(cursorPosition.x, static_cast<unsigned int>(nextLineInfo.glyphIndex - lineInfo.glyphIndex - 1));
+		}
+
+		return cursorPosition;
+	}
+
+	inline void AbstractTextAreaWidget::SetCharacterFilter(CharacterFilter filter)
+	{
+		m_characterFilter = std::move(filter);
+	}
+
+	inline void AbstractTextAreaWidget::SetCursorPosition(std::size_t glyphIndex)
+	{
+		Nz::Vector2ui position = GetCursorPosition(glyphIndex);
+		Nz::Vector2ui newPosition = position;
+
+		OnTextAreaCursorMove(this, &newPosition);
+
+		if (position == newPosition)
+			SetCursorPositionInternal(position);
+		else
+			SetCursorPositionInternal(GetGlyphIndex(newPosition));
+	}
+
+	inline void AbstractTextAreaWidget::SetCursorPosition(Nz::Vector2ui cursorPosition)
+	{
+		OnTextAreaCursorMove(this, &cursorPosition);
+
+		return SetCursorPositionInternal(NormalizeCursorPosition(cursorPosition));
+	}
+
+	inline void AbstractTextAreaWidget::SetEchoMode(EchoMode echoMode)
+	{
+		m_echoMode = echoMode;
+
+		UpdateDisplayText();
+	}
+
+	inline void AbstractTextAreaWidget::SetReadOnly(bool readOnly)
+	{
+		m_readOnly = readOnly;
+		m_cursorEntity->Enable(!m_readOnly && HasFocus());
+	}
+
+	inline void AbstractTextAreaWidget::SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition)
+	{
+		// Ensure begin is before end
+		if (toPosition.y < fromPosition.y || (toPosition.y == fromPosition.y && toPosition.x < fromPosition.x))
+			std::swap(fromPosition, toPosition);
+
+		if (m_cursorPositionBegin != fromPosition || m_cursorPositionEnd != toPosition)
+		{
+			OnTextAreaSelection(this, &fromPosition, &toPosition);
+
+			// Ensure begin is before end a second time (in case signal changed it)
+			if (toPosition.y < fromPosition.y || (toPosition.y == fromPosition.y && toPosition.x < fromPosition.x))
+				std::swap(fromPosition, toPosition);
+
+			m_cursorPositionBegin = NormalizeCursorPosition(fromPosition);
+			m_cursorPositionEnd = NormalizeCursorPosition(toPosition);
+
+			RefreshCursor();
+		}
+	}
+
+	inline void AbstractTextAreaWidget::Write(const Nz::String& text)
+	{
+		Write(text, GetGlyphIndex(m_cursorPositionBegin));
+	}
+
+	inline void AbstractTextAreaWidget::Write(const Nz::String& text, const Nz::Vector2ui& glyphPosition)
+	{
+		Write(text, GetGlyphIndex(glyphPosition));
+	}
+
+	void AbstractTextAreaWidget::SetCursorPositionInternal(std::size_t glyphIndex)
+	{
+		return SetCursorPositionInternal(GetCursorPosition(glyphIndex));
+	}
+
+	inline void AbstractTextAreaWidget::SetCursorPositionInternal(Nz::Vector2ui cursorPosition)
+	{
+		m_cursorPositionBegin = cursorPosition;
+		m_cursorPositionEnd = m_cursorPositionBegin;
+
+		RefreshCursor();
+	}
+}

SDK/include/NDK/Widgets/RichTextAreaWidget.hpp

@@ -0,0 +1,58 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#pragma once
+
+#ifndef NDK_WIDGETS_RICHTEXTAREAWIDGET_HPP
+#define NDK_WIDGETS_RICHTEXTAREAWIDGET_HPP
+
+#include <Nazara/Utility/RichTextDrawer.hpp>
+#include <NDK/Widgets/AbstractTextAreaWidget.hpp>
+
+namespace Ndk
+{
+	class NDK_API RichTextAreaWidget : public AbstractTextAreaWidget
+	{
+		public:
+			RichTextAreaWidget(BaseWidget* parent);
+			RichTextAreaWidget(const RichTextAreaWidget&) = delete;
+			RichTextAreaWidget(RichTextAreaWidget&&) = default;
+			~RichTextAreaWidget() = default;
+
+			void AppendText(const Nz::String& text);
+
+			void Clear() override;
+
+			void Erase(std::size_t firstGlyph, std::size_t lastGlyph) override;
+
+			inline unsigned int GetCharacterSize() const;
+			inline const Nz::Color& GetTextColor() const;
+			inline Nz::Font* GetTextFont() const;
+
+			inline void SetCharacterSize(unsigned int characterSize);
+			inline void SetTextColor(const Nz::Color& color);
+			inline void SetTextFont(Nz::FontRef font);
+
+			void Write(const Nz::String& text, std::size_t glyphPosition) override;
+
+			RichTextAreaWidget& operator=(const RichTextAreaWidget&) = delete;
+			RichTextAreaWidget& operator=(RichTextAreaWidget&&) = default;
+
+		private:
+			Nz::AbstractTextDrawer& GetTextDrawer() override;
+			const Nz::AbstractTextDrawer& GetTextDrawer() const override;
+
+			void HandleIndentation(bool add) override;
+			void HandleSelectionIndentation(bool add) override;
+			void HandleWordCursorMove(bool left) override;
+
+			void UpdateDisplayText();
+
+			Nz::RichTextDrawer m_drawer;
+	};
+}
+
+#include <NDK/Widgets/RichTextAreaWidget.inl>
+
+#endif // NDK_WIDGETS_TEXTAREAWIDGET_HPP

SDK/include/NDK/Widgets/RichTextAreaWidget.inl

@@ -0,0 +1,38 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Widgets/RichTextAreaWidget.hpp>
+
+namespace Ndk
+{
+	inline unsigned int RichTextAreaWidget::GetCharacterSize() const
+	{
+		return m_drawer.GetDefaultCharacterSize();
+	}
+
+	inline const Nz::Color& RichTextAreaWidget::GetTextColor() const
+	{
+		return m_drawer.GetDefaultColor();
+	}
+
+	inline Nz::Font* RichTextAreaWidget::GetTextFont() const
+	{
+		return m_drawer.GetDefaultFont();
+	}
+
+	inline void RichTextAreaWidget::SetCharacterSize(unsigned int characterSize)
+	{
+		m_drawer.SetDefaultCharacterSize(characterSize);
+	}
+
+	inline void RichTextAreaWidget::SetTextColor(const Nz::Color& color)
+	{
+		m_drawer.SetDefaultColor(color);
+	}
+
+	inline void RichTextAreaWidget::SetTextFont(Nz::FontRef font)
+	{
+		m_drawer.SetDefaultFont(std::move(font));
+	}
+}

SDK/include/NDK/Widgets/TextAreaWidget.hpp

@@ -7,20 +7,14 @@
 #ifndef NDK_WIDGETS_TEXTAREAWIDGET_HPP
 #define NDK_WIDGETS_TEXTAREAWIDGET_HPP
 
-#include <Nazara/Graphics/TextSprite.hpp>
 #include <Nazara/Utility/SimpleTextDrawer.hpp>
-#include <NDK/BaseWidget.hpp>
+#include <NDK/Widgets/AbstractTextAreaWidget.hpp>
-#include <NDK/Widgets/Enums.hpp>
-#include <functional>
-#include <vector>
 
 namespace Ndk
 {
-	class NDK_API TextAreaWidget : public BaseWidget
+	class NDK_API TextAreaWidget : public AbstractTextAreaWidget
 	{
 		public:
-			using CharacterFilter = std::function<bool(char32_t)>;
-
 			TextAreaWidget(BaseWidget* parent);
 			TextAreaWidget(const TextAreaWidget&) = delete;
 			TextAreaWidget(TextAreaWidget&&) = default;
@@ -28,115 +22,46 @@ namespace Ndk
 
 			void AppendText(const Nz::String& text);
 
-			inline void Clear();
+			void Clear() override;
 
-			//virtual TextAreaWidget* Clone() const = 0;
+			using AbstractTextAreaWidget::Erase;
+			void Erase(std::size_t firstGlyph, std::size_t lastGlyph) override;
 
-			void EnableLineWrap(bool enable = true);
-			inline void EnableMultiline(bool enable = true);
-			inline void EnableTabWriting(bool enable = true);
-
-			inline void Erase(std::size_t glyphPosition);
-			void Erase(std::size_t firstGlyph, std::size_t lastGlyph);
-			void EraseSelection();
-
-			inline const CharacterFilter& GetCharacterFilter() const;
 			inline unsigned int GetCharacterSize() const;
-			inline const Nz::Vector2ui& GetCursorPosition() const;
-			inline Nz::Vector2ui GetCursorPosition(std::size_t glyphIndex) const;
 			inline const Nz::String& GetDisplayText() const;
-			inline EchoMode GetEchoMode() const;
-			inline std::size_t GetGlyphIndex() const;
-			inline std::size_t GetGlyphIndex(const Nz::Vector2ui& cursorPosition) const;
 			inline const Nz::String& GetText() const;
 			inline const Nz::Color& GetTextColor() const;
 			inline Nz::Font* GetTextFont() const;
 			inline const Nz::Color& GetTextOulineColor() const;
 			inline float GetTextOulineThickness() const;
 
-			Nz::Vector2ui GetHoveredGlyph(float x, float y) const;
-
-			inline bool HasSelection() const;
-
-			inline bool IsLineWrapEnabled() const;
-			inline bool IsMultilineEnabled() const;
-			inline bool IsReadOnly() const;
-			inline bool IsTabWritingEnabled() const;
-
-			inline void MoveCursor(int offset);
-			inline void MoveCursor(const Nz::Vector2i& offset);
-
-			inline Nz::Vector2ui NormalizeCursorPosition(Nz::Vector2ui cursorPosition) const;
-
-			inline void SetCharacterFilter(CharacterFilter filter);
 			void SetCharacterSize(unsigned int characterSize);
-			inline void SetCursorPosition(std::size_t glyphIndex);
-			inline void SetCursorPosition(Nz::Vector2ui cursorPosition);
-			inline void SetEchoMode(EchoMode echoMode);
-			inline void SetReadOnly(bool readOnly = true);
-			inline void SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition);
 			inline void SetText(const Nz::String& text);
 			inline void SetTextColor(const Nz::Color& text);
 			inline void SetTextFont(Nz::FontRef font);
 			inline void SetTextOutlineColor(const Nz::Color& color);
 			inline void SetTextOutlineThickness(float thickness);
 
-			inline void Write(const Nz::String& text);
+			using AbstractTextAreaWidget::Write;
-			inline void Write(const Nz::String& text, const Nz::Vector2ui& glyphPosition);
+			void Write(const Nz::String& text, std::size_t glyphPosition) override;
-			void Write(const Nz::String& text, std::size_t glyphPosition);
 
 			TextAreaWidget& operator=(const TextAreaWidget&) = delete;
 			TextAreaWidget& operator=(TextAreaWidget&&) = default;
 
-			NazaraSignal(OnTextAreaCursorMove, const TextAreaWidget* /*textArea*/, Nz::Vector2ui* /*newCursorPosition*/);
+			NazaraSignal(OnTextChanged, const AbstractTextAreaWidget* /*textArea*/, const Nz::String& /*text*/);
-			NazaraSignal(OnTextAreaKeyBackspace, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyDown, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyEnd, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyHome, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyLeft, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyReturn, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyRight, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaKeyUp, const TextAreaWidget* /*textArea*/, bool* /*ignoreDefaultAction*/);
-			NazaraSignal(OnTextAreaSelection, const TextAreaWidget* /*textArea*/, Nz::Vector2ui* /*start*/, Nz::Vector2ui* /*end*/);
-			NazaraSignal(OnTextChanged, const TextAreaWidget* /*textArea*/, const Nz::String& /*text*/);
 
 		private:
-			void Layout() override;
+			Nz::AbstractTextDrawer& GetTextDrawer() override;
+			const Nz::AbstractTextDrawer& GetTextDrawer() const override;
 
-			bool IsFocusable() const override;
+			void HandleIndentation(bool add) override;
-			void OnFocusLost() override;
+			void HandleSelectionIndentation(bool add) override;
-			void OnFocusReceived() override;
+			void HandleWordCursorMove(bool left) override;
-			bool OnKeyPressed(const Nz::WindowEvent::KeyEvent& key) override;
-			void OnKeyReleased(const Nz::WindowEvent::KeyEvent& key) override;
-			void OnMouseButtonPress(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
-			void OnMouseButtonRelease(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
-			void OnMouseEnter() override;
-			void OnMouseMoved(int x, int y, int deltaX, int deltaY) override;
-			void OnTextEntered(char32_t character, bool repeated) override;
 
-			inline void SetCursorPositionInternal(std::size_t glyphIndex);
-			inline void SetCursorPositionInternal(Nz::Vector2ui cursorPosition);
-
-			void RefreshCursor();
 			void UpdateDisplayText();
-			void UpdateTextSprite();
 
-			CharacterFilter m_characterFilter;
-			EchoMode m_echoMode;
-			EntityHandle m_cursorEntity;
-			EntityHandle m_textEntity;
 			Nz::SimpleTextDrawer m_drawer;
 			Nz::String m_text;
-			Nz::TextSpriteRef m_textSprite;
-			Nz::Vector2ui m_cursorPositionBegin;
-			Nz::Vector2ui m_cursorPositionEnd;
-			Nz::Vector2ui m_selectionCursor;
-			std::vector<Nz::SpriteRef> m_cursorSprites;
-			bool m_isLineWrapEnabled;
-			bool m_isMouseButtonDown;
-			bool m_multiLineEnabled;
-			bool m_readOnly;
-			bool m_tabEnabled; // writes (Shift+)Tab character if set to true
 	};
 }
 

SDK/include/NDK/Widgets/TextAreaWidget.inl

@@ -6,98 +6,16 @@
 
 namespace Ndk
 {
-	inline void TextAreaWidget::Clear()
-	{
-		m_cursorPositionBegin.MakeZero();
-		m_cursorPositionEnd.MakeZero();
-		m_drawer.Clear();
-		m_text.Clear();
-		m_textSprite->Update(m_drawer);
-		SetPreferredSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));
-
-		RefreshCursor();
-		OnTextChanged(this, m_text);
-	}
-
-	inline void TextAreaWidget::EnableMultiline(bool enable)
-	{
-		m_multiLineEnabled = enable;
-	}
-
-	inline void TextAreaWidget::EnableTabWriting(bool enable)
-	{
-		m_tabEnabled = enable;
-	}
-
-	inline void TextAreaWidget::Erase(std::size_t glyphPosition)
-	{
-		Erase(glyphPosition, glyphPosition + 1U);
-	}
-
-	inline const TextAreaWidget::CharacterFilter& TextAreaWidget::GetCharacterFilter() const
-	{
-		return m_characterFilter;
-	}
-
 	inline unsigned int TextAreaWidget::GetCharacterSize() const
 	{
 		return m_drawer.GetCharacterSize();
 	}
 
-	inline const Nz::Vector2ui& TextAreaWidget::GetCursorPosition() const
-	{
-		return m_cursorPositionBegin;
-	}
-
-	Nz::Vector2ui TextAreaWidget::GetCursorPosition(std::size_t glyphIndex) const
-	{
-		glyphIndex = std::min(glyphIndex, m_drawer.GetGlyphCount());
-
-		std::size_t lineCount = m_drawer.GetLineCount();
-		std::size_t line = 0U;
-		for (std::size_t i = line + 1; i < lineCount; ++i)
-		{
-			if (m_drawer.GetLine(i).glyphIndex > glyphIndex)
-				break;
-
-			line = i;
-		}
-
-		const auto& lineInfo = m_drawer.GetLine(line);
-
-		Nz::Vector2ui cursorPos;
-		cursorPos.y = static_cast<unsigned int>(line);
-		cursorPos.x = static_cast<unsigned int>(glyphIndex - lineInfo.glyphIndex);
-
-		return cursorPos;
-	}
-
 	inline const Nz::String& TextAreaWidget::GetDisplayText() const
 	{
 		return m_drawer.GetText();
 	}
 
-	inline EchoMode TextAreaWidget::GetEchoMode() const
-	{
-		return m_echoMode;
-	}
-
-	inline std::size_t TextAreaWidget::GetGlyphIndex() const
-	{
-		return GetGlyphIndex(m_cursorPositionBegin);
-	}
-
-	inline std::size_t TextAreaWidget::GetGlyphIndex(const Nz::Vector2ui& cursorPosition) const
-	{
-		std::size_t glyphIndex = m_drawer.GetLine(cursorPosition.y).glyphIndex + cursorPosition.x;
-		if (m_drawer.GetLineCount() > cursorPosition.y + 1)
-			glyphIndex = std::min(glyphIndex, m_drawer.GetLine(cursorPosition.y + 1).glyphIndex - 1);
-		else
-			glyphIndex = std::min(glyphIndex, m_drawer.GetGlyphCount());
-
-		return glyphIndex;
-	}
-
 	inline const Nz::String& TextAreaWidget::GetText() const
 	{
 		return m_text;
@@ -123,144 +41,6 @@ namespace Ndk
 		return m_drawer.GetOutlineThickness();
 	}
 
-	inline bool TextAreaWidget::HasSelection() const
-	{
-		return m_cursorPositionBegin != m_cursorPositionEnd;
-	}
-
-	inline bool TextAreaWidget::IsLineWrapEnabled() const
-	{
-		return m_isLineWrapEnabled;
-	}
-
-	inline bool TextAreaWidget::IsMultilineEnabled() const
-	{
-		return m_multiLineEnabled;
-	}
-
-	inline bool TextAreaWidget::IsTabWritingEnabled() const
-	{
-		return m_tabEnabled;
-	}
-
-	inline bool TextAreaWidget::IsReadOnly() const
-	{
-		return m_readOnly;
-	}
-
-	inline void TextAreaWidget::MoveCursor(int offset)
-	{
-		std::size_t cursorGlyph = GetGlyphIndex(m_cursorPositionBegin);
-		if (offset >= 0)
-			SetCursorPosition(cursorGlyph + static_cast<std::size_t>(offset));
-		else
-		{
-			std::size_t nOffset = static_cast<std::size_t>(-offset);
-			if (nOffset >= cursorGlyph)
-				SetCursorPosition(0);
-			else
-				SetCursorPosition(cursorGlyph - nOffset);
-		}
-	}
-
-	inline void TextAreaWidget::MoveCursor(const Nz::Vector2i& offset)
-	{
-		auto ClampOffset = [] (unsigned int cursorPosition, int cursorOffset) -> unsigned int
-		{
-			if (cursorOffset >= 0)
-				return cursorPosition + cursorOffset;
-			else
-			{
-				unsigned int nOffset = static_cast<unsigned int>(-cursorOffset);
-				if (nOffset >= cursorPosition)
-					return 0;
-				else
-					return cursorPosition - nOffset;
-			}
-		};
-
-		Nz::Vector2ui cursorPosition = m_cursorPositionBegin;
-		cursorPosition.x = ClampOffset(static_cast<unsigned int>(cursorPosition.x), offset.x);
-		cursorPosition.y = ClampOffset(static_cast<unsigned int>(cursorPosition.y), offset.y);
-
-		SetCursorPosition(cursorPosition);
-	}
-
-	inline Nz::Vector2ui TextAreaWidget::NormalizeCursorPosition(Nz::Vector2ui cursorPosition) const
-	{
-		std::size_t lineCount = m_drawer.GetLineCount();
-		if (cursorPosition.y >= lineCount)
-			cursorPosition.y = static_cast<unsigned int>(lineCount - 1);
-
-		const auto& lineInfo = m_drawer.GetLine(cursorPosition.y);
-		if (cursorPosition.y + 1 < lineCount)
-		{
-			const auto& nextLineInfo = m_drawer.GetLine(cursorPosition.y + 1);
-			cursorPosition.x = std::min(cursorPosition.x, static_cast<unsigned int>(nextLineInfo.glyphIndex - lineInfo.glyphIndex - 1));
-		}
-
-		return cursorPosition;
-	}
-
-	inline void TextAreaWidget::SetCharacterFilter(CharacterFilter filter)
-	{
-		m_characterFilter = std::move(filter);
-	}
-
-	inline void TextAreaWidget::SetCursorPosition(std::size_t glyphIndex)
-	{
-		Nz::Vector2ui position = GetCursorPosition(glyphIndex);
-		Nz::Vector2ui newPosition = position;
-
-		OnTextAreaCursorMove(this, &newPosition);
-
-		if (position == newPosition)
-			SetCursorPositionInternal(position);
-		else
-			SetCursorPositionInternal(GetGlyphIndex(newPosition));
-	}
-
-	inline void TextAreaWidget::SetCursorPosition(Nz::Vector2ui cursorPosition)
-	{
-		OnTextAreaCursorMove(this, &cursorPosition);
-
-		return SetCursorPositionInternal(NormalizeCursorPosition(cursorPosition));
-	}
-
-	inline void TextAreaWidget::SetEchoMode(EchoMode echoMode)
-	{
-		m_echoMode = echoMode;
-
-		UpdateDisplayText();
-	}
-
-	inline void TextAreaWidget::SetReadOnly(bool readOnly)
-	{
-		m_readOnly = readOnly;
-		m_cursorEntity->Enable(!m_readOnly && HasFocus());
-	}
-
-	inline void TextAreaWidget::SetSelection(Nz::Vector2ui fromPosition, Nz::Vector2ui toPosition)
-	{
-		// Ensure begin is before end
-		if (toPosition.y < fromPosition.y || (toPosition.y == fromPosition.y && toPosition.x < fromPosition.x))
-			std::swap(fromPosition, toPosition);
-
-		if (m_cursorPositionBegin != fromPosition || m_cursorPositionEnd != toPosition)
-		{
-			OnTextAreaSelection(this, &fromPosition, &toPosition);
-
-			// Ensure begin is before end a second time (in case signal changed it)
-			if (toPosition.y < fromPosition.y || (toPosition.y == fromPosition.y && toPosition.x < fromPosition.x))
-				std::swap(fromPosition, toPosition);
-
-			m_cursorPositionBegin = NormalizeCursorPosition(fromPosition);
-			m_cursorPositionEnd = NormalizeCursorPosition(toPosition);
-
-			RefreshCursor();
-		}
-	}
-
 	inline void TextAreaWidget::SetText(const Nz::String& text)
 	{
 		m_text = text;
@@ -296,27 +76,4 @@ namespace Ndk
 
 		UpdateDisplayText();
 	}
-
-	inline void TextAreaWidget::Write(const Nz::String& text)
-	{
-		Write(text, GetGlyphIndex(m_cursorPositionBegin));
-	}
-
-	inline void TextAreaWidget::Write(const Nz::String& text, const Nz::Vector2ui& glyphPosition)
-	{
-		Write(text, GetGlyphIndex(glyphPosition));
-	}
-
-	void TextAreaWidget::SetCursorPositionInternal(std::size_t glyphIndex)
-	{
-		return SetCursorPositionInternal(GetCursorPosition(glyphIndex));
-	}
-
-	inline void TextAreaWidget::SetCursorPositionInternal(Nz::Vector2ui cursorPosition)
-	{
-		m_cursorPositionBegin = cursorPosition;
-		m_cursorPositionEnd = m_cursorPositionBegin;
-
-		RefreshCursor();
-	}
 }

SDK/src/NDK/Console.cpp

@@ -61,25 +61,25 @@ namespace Ndk
 		// Protect input prefix from erasure/selection
 		m_input->SetCursorPosition(s_inputPrefixSize);
 
-		m_input->OnTextAreaCursorMove.Connect([](const TextAreaWidget* textArea, Nz::Vector2ui* newCursorPos)
+		m_input->OnTextAreaCursorMove.Connect([](const AbstractTextAreaWidget* textArea, Nz::Vector2ui* newCursorPos)
 		{
 			newCursorPos->x = std::max(newCursorPos->x, static_cast<unsigned int>(s_inputPrefixSize));
 		});
 
-		m_input->OnTextAreaSelection.Connect([](const TextAreaWidget* textArea, Nz::Vector2ui* start, Nz::Vector2ui* end)
+		m_input->OnTextAreaSelection.Connect([](const AbstractTextAreaWidget* textArea, Nz::Vector2ui* start, Nz::Vector2ui* end)
 		{
 			start->x = std::max(start->x, static_cast<unsigned int>(s_inputPrefixSize));
 			end->x = std::max(end->x, static_cast<unsigned int>(s_inputPrefixSize));
 		});
 
-		m_input->OnTextAreaKeyBackspace.Connect([](const TextAreaWidget* textArea, bool* ignoreDefaultAction)
+		m_input->OnTextAreaKeyBackspace.Connect([](const AbstractTextAreaWidget* textArea, bool* ignoreDefaultAction)
 		{
 			if (textArea->GetGlyphIndex() <= s_inputPrefixSize)
 				*ignoreDefaultAction = true;
 		});
 
 		// Handle history
-		m_input->OnTextAreaKeyUp.Connect([&] (const TextAreaWidget* textArea, bool* ignoreDefaultAction)
+		m_input->OnTextAreaKeyUp.Connect([&] (const AbstractTextAreaWidget* textArea, bool* ignoreDefaultAction)
 		{
 			*ignoreDefaultAction = true;
 
@@ -89,7 +89,7 @@ namespace Ndk
 			m_input->SetText(s_inputPrefix + m_commandHistory[m_historyPosition]);
 		});
 
-		m_input->OnTextAreaKeyDown.Connect([&] (const TextAreaWidget* textArea, bool* ignoreDefaultAction)
+		m_input->OnTextAreaKeyDown.Connect([&] (const AbstractTextAreaWidget* textArea, bool* ignoreDefaultAction)
 		{
 			*ignoreDefaultAction = true;
 
@@ -187,7 +187,7 @@ namespace Ndk
 	/*!
 	* \brief Performs this action when an input is added to the console
 	*/
-	void Console::ExecuteInput(const TextAreaWidget* textArea, bool* ignoreDefaultAction)
+	void Console::ExecuteInput(const AbstractTextAreaWidget* textArea, bool* ignoreDefaultAction)
 	{
 		NazaraAssert(textArea == m_input, "Unexpected signal from an other text area");
 

SDK/src/NDK/Widgets/AbstractTextAreaWidget.cpp

@@ -0,0 +1,489 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Widgets/AbstractTextAreaWidget.hpp>
+#include <Nazara/Core/Unicode.hpp>
+#include <Nazara/Utility/Font.hpp>
+#include <NDK/Components/GraphicsComponent.hpp>
+#include <NDK/Components/NodeComponent.hpp>
+
+namespace Ndk
+{
+	namespace
+	{
+		constexpr float paddingWidth = 5.f;
+		constexpr float paddingHeight = 3.f;
+	}
+
+	AbstractTextAreaWidget::AbstractTextAreaWidget(BaseWidget* parent) :
+	BaseWidget(parent),
+	m_characterFilter(),
+	m_echoMode(EchoMode_Normal),
+	m_cursorPositionBegin(0U, 0U),
+	m_cursorPositionEnd(0U, 0U),
+	m_isLineWrapEnabled(false),
+	m_isMouseButtonDown(false),
+	m_multiLineEnabled(false),
+	m_readOnly(false),
+	m_tabEnabled(false)
+	{
+		m_textSprite = Nz::TextSprite::New();
+
+		m_textEntity = CreateEntity();
+		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
+
+		auto& textNode = m_textEntity->AddComponent<NodeComponent>();
+		textNode.SetParent(this);
+		textNode.SetPosition(paddingWidth, paddingHeight);
+
+		m_cursorEntity = CreateEntity();
+		m_cursorEntity->AddComponent<GraphicsComponent>();
+		m_cursorEntity->AddComponent<NodeComponent>().SetParent(m_textEntity);
+		m_cursorEntity->GetComponent<NodeComponent>();
+		m_cursorEntity->Enable(false);
+
+		SetCursor(Nz::SystemCursor_Text);
+
+		EnableBackground(true);
+	}
+	
+	void AbstractTextAreaWidget::Clear()
+	{
+		Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		m_cursorPositionBegin.MakeZero();
+		m_cursorPositionEnd.MakeZero();
+		textDrawer.Clear();
+		m_textSprite->Update(textDrawer);
+		SetPreferredSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));
+
+		RefreshCursor();
+	}
+
+	void AbstractTextAreaWidget::EnableLineWrap(bool enable)
+	{
+		if (m_isLineWrapEnabled != enable)
+		{
+			m_isLineWrapEnabled = enable;
+
+			Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+			if (enable)
+				textDrawer.SetMaxLineWidth(GetWidth());
+			else
+				textDrawer.SetMaxLineWidth(std::numeric_limits<float>::infinity());
+
+			UpdateTextSprite();
+		}
+	}
+
+	Nz::Vector2ui AbstractTextAreaWidget::GetHoveredGlyph(float x, float y) const
+	{
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		auto& textNode = m_textEntity->GetComponent<Ndk::NodeComponent>();
+		Nz::Vector2f textPosition = Nz::Vector2f(textNode.GetPosition(Nz::CoordSys_Local));
+		x -= textPosition.x;
+		y -= textPosition.y;
+
+		std::size_t glyphCount = textDrawer.GetGlyphCount();
+		if (glyphCount > 0)
+		{
+			std::size_t lineCount = textDrawer.GetLineCount();
+			std::size_t line = 0U;
+			for (; line < lineCount - 1; ++line)
+			{
+				Nz::Rectf lineBounds = textDrawer.GetLine(line).bounds;
+				if (lineBounds.GetMaximum().y > y)
+					break;
+			}
+
+			std::size_t upperLimit = (line != lineCount - 1) ? textDrawer.GetLine(line + 1).glyphIndex : glyphCount + 1;
+
+			std::size_t firstLineGlyph = textDrawer.GetLine(line).glyphIndex;
+			std::size_t i = firstLineGlyph;
+			for (; i < upperLimit - 1; ++i)
+			{
+				Nz::Rectf bounds = textDrawer.GetGlyph(i).bounds;
+				if (x < bounds.x + bounds.width * 0.75f)
+					break;
+			}
+
+			return Nz::Vector2ui(Nz::Vector2<std::size_t>(i - firstLineGlyph, line));
+		}
+
+		return Nz::Vector2ui::Zero();
+	}
+
+	void AbstractTextAreaWidget::Layout()
+	{
+		BaseWidget::Layout();
+
+		if (m_isLineWrapEnabled)
+		{
+			Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+			textDrawer.SetMaxLineWidth(GetWidth());
+			UpdateTextSprite();
+		}
+
+		RefreshCursor();
+	}
+
+	bool AbstractTextAreaWidget::IsFocusable() const
+	{
+		return !m_readOnly;
+	}
+
+	void AbstractTextAreaWidget::OnFocusLost()
+	{
+		m_cursorEntity->Disable();
+	}
+
+	void AbstractTextAreaWidget::OnFocusReceived()
+	{
+		if (!m_readOnly)
+			m_cursorEntity->Enable(true);
+	}
+
+	bool AbstractTextAreaWidget::OnKeyPressed(const Nz::WindowEvent::KeyEvent& key)
+	{
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		switch (key.code)
+		{
+			case Nz::Keyboard::Backspace:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyBackspace(this, &ignoreDefaultAction);
+
+				std::size_t cursorGlyphEnd = GetGlyphIndex(m_cursorPositionEnd);
+
+				if (ignoreDefaultAction || cursorGlyphEnd == 0)
+					return true;
+
+				// When a text is selected, delete key does the same as delete and leave the character behind it
+				if (HasSelection())
+					EraseSelection();
+				else
+				{
+					MoveCursor(-1);
+					Erase(GetGlyphIndex(m_cursorPositionBegin));
+				}
+
+				return true;
+			}
+
+			case Nz::Keyboard::Delete:
+			{
+				if (HasSelection())
+					EraseSelection();
+				else
+					Erase(GetGlyphIndex(m_cursorPositionBegin));
+
+				return true;
+			}
+
+			case Nz::Keyboard::Down:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyDown(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionEnd);
+
+				MoveCursor({0, 1});
+				return true;
+			}
+
+			case Nz::Keyboard::End:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyEnd(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				std::size_t lineCount = textDrawer.GetLineCount();
+				if (key.control && lineCount > 0)
+					SetCursorPosition({ static_cast<unsigned int>(textDrawer.GetLineGlyphCount(lineCount - 1)), static_cast<unsigned int>(lineCount - 1) });
+				else
+					SetCursorPosition({ static_cast<unsigned int>(textDrawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
+
+				return true;
+			}
+
+			case Nz::Keyboard::Home:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyHome(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				SetCursorPosition({ 0U, key.control ? 0U : m_cursorPositionEnd.y });
+				return true;
+			}
+
+			case Nz::Keyboard::Left:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyLeft(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionBegin);
+				else if (key.control)
+					HandleWordCursorMove(true);
+				else
+					MoveCursor(-1);
+
+				return true;
+			}
+
+			case Nz::Keyboard::Return:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyReturn(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				if (!m_multiLineEnabled)
+					break;
+
+				if (HasSelection())
+					EraseSelection();
+
+				Write(Nz::String('\n'));
+				return true;;
+			}
+
+			case Nz::Keyboard::Right:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyRight(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionEnd);
+				else if (key.control)
+					HandleWordCursorMove(false);
+				else
+					MoveCursor(1);
+
+				return true;
+			}
+
+			case Nz::Keyboard::Up:
+			{
+				bool ignoreDefaultAction = false;
+				OnTextAreaKeyUp(this, &ignoreDefaultAction);
+
+				if (ignoreDefaultAction)
+					return true;
+
+				if (HasSelection())
+					SetCursorPosition(m_cursorPositionBegin);
+
+				MoveCursor({0, -1});
+				return true;
+			}
+
+			case Nz::Keyboard::Tab:
+			{
+				if (!m_tabEnabled)
+					return false;
+
+				if (HasSelection())
+					HandleSelectionIndentation(!key.shift);
+				else
+					HandleIndentation(!key.shift);
+
+				return true;
+			}
+
+			default:
+				break;
+		}
+
+		return false;
+	}
+
+	void AbstractTextAreaWidget::OnKeyReleased(const Nz::WindowEvent::KeyEvent& /*key*/)
+	{
+	}
+
+	void AbstractTextAreaWidget::OnMouseButtonPress(int x, int y, Nz::Mouse::Button button)
+	{
+		if (button == Nz::Mouse::Left)
+		{
+			SetFocus();
+
+			Nz::Vector2ui hoveredGlyph = GetHoveredGlyph(float(x), float(y));
+
+			// Shift extends selection
+			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::LShift) || Nz::Keyboard::IsKeyPressed(Nz::Keyboard::RShift))
+				SetSelection(hoveredGlyph, m_selectionCursor);
+			else
+			{
+				SetCursorPosition(hoveredGlyph);
+				m_selectionCursor = m_cursorPositionBegin;
+			}
+
+			m_isMouseButtonDown = true;
+		}
+	}
+
+	void AbstractTextAreaWidget::OnMouseButtonRelease(int, int, Nz::Mouse::Button button)
+	{
+		if (button == Nz::Mouse::Left)
+			m_isMouseButtonDown = false;
+	}
+
+	void AbstractTextAreaWidget::OnMouseEnter()
+	{
+		if (!Nz::Mouse::IsButtonPressed(Nz::Mouse::Left))
+			m_isMouseButtonDown = false;
+	}
+
+	void AbstractTextAreaWidget::OnMouseMoved(int x, int y, int deltaX, int deltaY)
+	{
+		if (m_isMouseButtonDown)
+			SetSelection(m_selectionCursor, GetHoveredGlyph(float(x), float(y)));
+	}
+
+	void AbstractTextAreaWidget::OnTextEntered(char32_t character, bool /*repeated*/)
+	{
+		if (m_readOnly)
+			return;
+
+		if (Nz::Unicode::GetCategory(character) == Nz::Unicode::Category_Other_Control || (m_characterFilter && !m_characterFilter(character)))
+			return;
+
+		if (HasSelection())
+			EraseSelection();
+
+		Write(Nz::String::Unicode(character));
+	}
+
+	void AbstractTextAreaWidget::RefreshCursor()
+	{
+		if (m_readOnly)
+			return;
+
+		const Nz::AbstractTextDrawer& textDrawer = GetTextDrawer();
+
+		auto GetGlyph = [&](const Nz::Vector2ui& glyphPosition, std::size_t* glyphIndex) -> const Nz::AbstractTextDrawer::Glyph*
+		{
+			if (glyphPosition.y >= textDrawer.GetLineCount())
+				return nullptr;
+
+			const auto& lineInfo = textDrawer.GetLine(glyphPosition.y);
+
+			std::size_t cursorGlyph = GetGlyphIndex({ glyphPosition.x, glyphPosition.y });
+			if (glyphIndex)
+				*glyphIndex = cursorGlyph;
+
+			std::size_t glyphCount = textDrawer.GetGlyphCount();
+			if (glyphCount > 0 && lineInfo.glyphIndex < cursorGlyph)
+			{
+				const auto& glyph = textDrawer.GetGlyph(std::min(cursorGlyph, glyphCount - 1));
+				return &glyph;
+			}
+			else
+				return nullptr;
+		};
+
+		// Move text so that cursor is always visible
+		const auto* lastGlyph = GetGlyph(m_cursorPositionEnd, nullptr);
+		float glyphPos = (lastGlyph) ? lastGlyph->bounds.x : 0.f;
+		float glyphWidth = (lastGlyph) ? lastGlyph->bounds.width : 0.f;
+
+		auto& node = m_textEntity->GetComponent<Ndk::NodeComponent>();
+		float textPosition = node.GetPosition(Nz::CoordSys_Local).x - paddingWidth;
+		float cursorPosition = glyphPos + textPosition;
+		float width = GetWidth();
+
+		if (width <= textDrawer.GetBounds().width)
+		{
+			if (cursorPosition + glyphWidth > width)
+				node.Move(width - cursorPosition - glyphWidth, 0.f);
+			else if (cursorPosition - glyphWidth < 0.f)
+				node.Move(-cursorPosition + glyphWidth, 0.f);
+		}
+		else
+			node.Move(-textPosition, 0.f); // Reset text position if we have enough room to show everything
+
+		// Show cursor/selection
+		std::size_t selectionLineCount = m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1;
+		std::size_t oldSpriteCount = m_cursorSprites.size();
+		if (m_cursorSprites.size() != selectionLineCount)
+		{
+			m_cursorSprites.resize(m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1);
+			for (std::size_t i = oldSpriteCount; i < m_cursorSprites.size(); ++i)
+			{
+				m_cursorSprites[i] = Nz::Sprite::New();
+				m_cursorSprites[i]->SetMaterial(Nz::Material::New("Translucent2D"));
+			}
+		}
+
+		GraphicsComponent& gfxComponent = m_cursorEntity->GetComponent<GraphicsComponent>();
+		gfxComponent.Clear();
+
+		for (unsigned int i = m_cursorPositionBegin.y; i <= m_cursorPositionEnd.y; ++i)
+		{
+			const auto& lineInfo = textDrawer.GetLine(i);
+
+			Nz::SpriteRef& cursorSprite = m_cursorSprites[i - m_cursorPositionBegin.y];
+			if (i == m_cursorPositionBegin.y || i == m_cursorPositionEnd.y)
+			{
+				auto GetGlyphPos = [&](const Nz::Vector2ui& glyphPosition)
+				{
+					std::size_t glyphIndex;
+					const auto* glyph = GetGlyph(glyphPosition, &glyphIndex);
+					if (glyph)
+					{
+						float position = glyph->bounds.x;
+						if (glyphIndex >= textDrawer.GetGlyphCount())
+							position += glyph->bounds.width;
+
+						return position;
+					}
+					else
+						return 0.f;
+				};
+
+				float beginX = (i == m_cursorPositionBegin.y) ? GetGlyphPos({ m_cursorPositionBegin.x, i }) : 0.f;
+				float endX = (i == m_cursorPositionEnd.y) ? GetGlyphPos({ m_cursorPositionEnd.x, i }) : lineInfo.bounds.width;
+				float spriteSize = std::max(endX - beginX, 1.f);
+
+				cursorSprite->SetColor((m_cursorPositionBegin == m_cursorPositionEnd) ? Nz::Color::Black : Nz::Color(0, 0, 0, 50));
+				cursorSprite->SetSize(spriteSize, lineInfo.bounds.height);
+
+				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ beginX, lineInfo.bounds.y, 0.f }));
+			}
+			else
+			{
+				cursorSprite->SetColor(Nz::Color(0, 0, 0, 50));
+				cursorSprite->SetSize(lineInfo.bounds.width, lineInfo.bounds.height);
+
+				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ 0.f, lineInfo.bounds.y, 0.f }));
+			}
+		}
+	}
+
+	void AbstractTextAreaWidget::UpdateTextSprite()
+	{
+		m_textSprite->Update(GetTextDrawer());
+		SetPreferredSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));
+	}
+}

SDK/src/NDK/Widgets/RichTextAreaWidget.cpp

@@ -0,0 +1,156 @@
+// Copyright (C) 2017 Jérôme Leclercq
+// This file is part of the "Nazara Development Kit"
+// For conditions of distribution and use, see copyright notice in Prerequisites.hpp
+
+#include <NDK/Widgets/RichTextAreaWidget.hpp>
+
+namespace Ndk
+{
+	RichTextAreaWidget::RichTextAreaWidget(BaseWidget* parent) :
+	AbstractTextAreaWidget(parent)
+	{
+		Layout();
+	}
+	
+	void RichTextAreaWidget::AppendText(const Nz::String& text)
+	{
+		//m_text += text;
+		switch (m_echoMode)
+		{
+			case EchoMode_Normal:
+				m_drawer.AppendText(text);
+				break;
+
+			case EchoMode_Password:
+				m_drawer.AppendText(Nz::String(text.GetLength(), '*'));
+				break;
+
+			case EchoMode_PasswordExceptLast:
+			{
+				/*m_drawer.Clear();
+				std::size_t textLength = m_text.GetLength();
+				if (textLength >= 2)
+				{
+					std::size_t lastCharacterPosition = m_text.GetCharacterPosition(textLength - 2);
+					if (lastCharacterPosition != Nz::String::npos)
+						m_drawer.AppendText(Nz::String(textLength - 1, '*'));
+				}
+
+				if (textLength >= 1)
+					m_drawer.AppendText(m_text.SubString(m_text.GetCharacterPosition(textLength - 1)));*/
+
+				break;
+			}
+		}
+
+		UpdateTextSprite();
+
+		//OnTextChanged(this, m_text);
+	}
+
+	void RichTextAreaWidget::Clear()
+	{
+		AbstractTextAreaWidget::Clear();
+	}
+
+	void RichTextAreaWidget::Erase(std::size_t firstGlyph, std::size_t lastGlyph)
+	{
+		if (firstGlyph > lastGlyph)
+			std::swap(firstGlyph, lastGlyph);
+
+		std::size_t textLength = m_drawer.GetGlyphCount();
+		if (firstGlyph > textLength)
+			return;
+
+		std::size_t firstBlock = m_drawer.FindBlock(firstGlyph);
+		std::size_t lastBlock = m_drawer.FindBlock(lastGlyph);
+		if (firstBlock == lastBlock)
+		{
+			const Nz::String& blockText = m_drawer.GetBlockText(firstBlock);
+			std::size_t blockFirstGlyph = m_drawer.GetBlockFirstGlyphIndex(firstBlock);
+
+			Nz::String newText;
+			if (firstGlyph > blockFirstGlyph)
+			{
+				std::size_t characterPosition = blockText.GetCharacterPosition(firstGlyph - blockFirstGlyph - 1);
+				NazaraAssert(characterPosition != Nz::String::npos, "Invalid character position");
+
+				newText.Append(blockText.SubString(0, characterPosition));
+			}
+
+			if (lastGlyph < textLength)
+			{
+				std::size_t characterPosition = blockText.GetCharacterPosition(lastGlyph - blockFirstGlyph);
+				NazaraAssert(characterPosition != Nz::String::npos, "Invalid character position");
+
+				newText.Append(blockText.SubString(characterPosition));
+			}
+
+			m_drawer.SetBlockText(firstBlock, newText);
+		}
+		else
+		{
+			// More complicated algorithm, yay
+		}
+
+		UpdateDisplayText();
+	}
+
+	void RichTextAreaWidget::Write(const Nz::String& text, std::size_t glyphPosition)
+	{
+		auto block = m_drawer.GetBlock(m_drawer.FindBlock(glyphPosition));
+		std::size_t firstGlyph = block.GetFirstGlyphIndex();
+		assert(glyphPosition >= firstGlyph);
+
+		Nz::String blockText = block.GetText();
+		std::size_t characterPosition = blockText.GetCharacterPosition(glyphPosition - firstGlyph);
+		blockText.Insert(characterPosition, text);
+
+		block.SetText(blockText);
+		SetCursorPosition(glyphPosition + text.GetLength());
+
+		UpdateDisplayText();
+	}
+
+	Nz::AbstractTextDrawer& RichTextAreaWidget::GetTextDrawer()
+	{
+		return m_drawer;
+	}
+
+	const Nz::AbstractTextDrawer& RichTextAreaWidget::GetTextDrawer() const
+	{
+		return m_drawer;
+	}
+
+	void RichTextAreaWidget::HandleIndentation(bool add)
+	{
+	}
+
+	void RichTextAreaWidget::HandleSelectionIndentation(bool add)
+	{
+	}
+
+	void RichTextAreaWidget::HandleWordCursorMove(bool left)
+	{
+	}
+
+	void RichTextAreaWidget::UpdateDisplayText()
+	{
+		/*m_drawer.Clear();
+		switch (m_echoMode)
+		{
+			case EchoMode_Normal:
+				m_drawer.AppendText(m_text);
+				break;
+
+			case EchoMode_Password:
+			case EchoMode_PasswordExceptLast:
+				m_drawer.AppendText(Nz::String(m_text.GetLength(), '*'));
+				break;
+		}*/
+
+		UpdateTextSprite();
+
+		SetCursorPosition(m_cursorPositionBegin); //< Refresh cursor position (prevent it from being outside of the text)
+	}
+}

SDK/src/NDK/Widgets/TextAreaWidget.cpp

@@ -10,46 +10,14 @@
 
 namespace Ndk
 {
-	namespace
-	{
-		constexpr float paddingWidth = 5.f;
-		constexpr float paddingHeight = 3.f;
-	}
-
 	TextAreaWidget::TextAreaWidget(BaseWidget* parent) :
-	BaseWidget(parent),
+	AbstractTextAreaWidget(parent)
-	m_characterFilter(),
-	m_echoMode(EchoMode_Normal),
-	m_cursorPositionBegin(0U, 0U),
-	m_cursorPositionEnd(0U, 0U),
-	m_isLineWrapEnabled(false),
-	m_isMouseButtonDown(false),
-	m_multiLineEnabled(false),
-	m_readOnly(false),
-	m_tabEnabled(false)
 	{
-		m_textSprite = Nz::TextSprite::New();
-
-		m_textEntity = CreateEntity();
-		m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
-
-		auto& textNode = m_textEntity->AddComponent<NodeComponent>();
-		textNode.SetParent(this);
-		textNode.SetPosition(paddingWidth, paddingHeight);
-
-		m_cursorEntity = CreateEntity();
-		m_cursorEntity->AddComponent<GraphicsComponent>();
-		m_cursorEntity->AddComponent<NodeComponent>().SetParent(m_textEntity);
-		m_cursorEntity->GetComponent<NodeComponent>();
-		m_cursorEntity->Enable(false);
-
-		SetCursor(Nz::SystemCursor_Text);
 		SetCharacterSize(GetCharacterSize()); //< Actualize minimum / preferred size
 
-		EnableBackground(true);
 		Layout();
 	}
-
+	
 	void TextAreaWidget::AppendText(const Nz::String& text)
 	{
 		m_text += text;
@@ -86,21 +54,14 @@ namespace Ndk
 		OnTextChanged(this, m_text);
 	}
 
-	void TextAreaWidget::EnableLineWrap(bool enable)
+	void TextAreaWidget::Clear()
 	{
-		if (m_isLineWrapEnabled != enable)
+		AbstractTextAreaWidget::Clear();
-		{
-			m_isLineWrapEnabled = enable;
 
-			if (enable)
+		m_text.Clear();
-				m_drawer.SetMaxLineWidth(GetWidth());
+		OnTextChanged(this, m_text);
-			else
-				m_drawer.SetMaxLineWidth(std::numeric_limits<float>::infinity());
-
-			UpdateTextSprite();
-		}
 	}
-
+	
 	void TextAreaWidget::Erase(std::size_t firstGlyph, std::size_t lastGlyph)
 	{
 		if (firstGlyph > lastGlyph)
@@ -130,50 +91,6 @@ namespace Ndk
 		SetText(newText);
 	}
 
-	void TextAreaWidget::EraseSelection()
-	{
-		if (!HasSelection())
-			return;
-
-		Erase(GetGlyphIndex(m_cursorPositionBegin), GetGlyphIndex(m_cursorPositionEnd));
-	}
-
-	Nz::Vector2ui TextAreaWidget::GetHoveredGlyph(float x, float y) const
-	{
-		auto& textNode = m_textEntity->GetComponent<Ndk::NodeComponent>();
-		Nz::Vector2f textPosition = Nz::Vector2f(textNode.GetPosition(Nz::CoordSys_Local));
-		x -= textPosition.x;
-		y -= textPosition.y;
-
-		std::size_t glyphCount = m_drawer.GetGlyphCount();
-		if (glyphCount > 0)
-		{
-			std::size_t lineCount = m_drawer.GetLineCount();
-			std::size_t line = 0U;
-			for (; line < lineCount - 1; ++line)
-			{
-				Nz::Rectf lineBounds = m_drawer.GetLine(line).bounds;
-				if (lineBounds.GetMaximum().y > y)
-					break;
-			}
-
-			std::size_t upperLimit = (line != lineCount - 1) ? m_drawer.GetLine(line + 1).glyphIndex : glyphCount + 1;
-
-			std::size_t firstLineGlyph = m_drawer.GetLine(line).glyphIndex;
-			std::size_t i = firstLineGlyph;
-			for (; i < upperLimit - 1; ++i)
-			{
-				Nz::Rectf bounds = m_drawer.GetGlyph(i).bounds;
-				if (x < bounds.x + bounds.width * 0.75f)
-					break;
-			}
-
-			return Nz::Vector2ui(Nz::Vector2<std::size_t>(i - firstLineGlyph, line));
-		}
-
-		return Nz::Vector2ui::Zero();
-	}
-
 	void TextAreaWidget::SetCharacterSize(unsigned int characterSize)
 	{
 		m_drawer.SetCharacterSize(characterSize);
@@ -198,6 +115,7 @@ namespace Ndk
 	{
 		if (glyphPosition >= m_drawer.GetGlyphCount())
 		{
+			// It's faster to append than to insert in the middle
 			AppendText(text);
 			SetCursorPosition(m_drawer.GetGlyphCount());
 		}
@@ -210,452 +128,109 @@ namespace Ndk
 		}
 	}
 
-	void TextAreaWidget::Layout()
+	Nz::AbstractTextDrawer& TextAreaWidget::GetTextDrawer()
 	{
-		BaseWidget::Layout();
+		return m_drawer;
+	}
 
-		if (m_isLineWrapEnabled)
+	const Nz::AbstractTextDrawer& TextAreaWidget::GetTextDrawer() const
+	{
+		return m_drawer;
+	}
+
+	void TextAreaWidget::HandleIndentation(bool add)
+	{
+		if (add)
+			Write(Nz::String('\t'));
+		else
 		{
-			m_drawer.SetMaxLineWidth(GetWidth());
+			std::size_t currentGlyph = GetGlyphIndex(m_cursorPositionBegin);
-			UpdateTextSprite();
-		}
 
-		RefreshCursor();
+			if (currentGlyph > 0 && m_text[m_text.GetCharacterPosition(currentGlyph - 1U)] == '\t') // Check if previous glyph is a tab
-	}
-
-	bool TextAreaWidget::IsFocusable() const
-	{
-		return !m_readOnly;
-	}
-
-	void TextAreaWidget::OnFocusLost()
-	{
-		m_cursorEntity->Disable();
-	}
-
-	void TextAreaWidget::OnFocusReceived()
-	{
-		if (!m_readOnly)
-			m_cursorEntity->Enable(true);
-	}
-
-	bool TextAreaWidget::OnKeyPressed(const Nz::WindowEvent::KeyEvent& key)
-	{
-		switch (key.code)
-		{
-			case Nz::Keyboard::Backspace:
 			{
-				bool ignoreDefaultAction = false;
+				Erase(currentGlyph - 1U);
-				OnTextAreaKeyBackspace(this, &ignoreDefaultAction);
 
-				std::size_t cursorGlyphBegin = GetGlyphIndex(m_cursorPositionBegin);
+				if (m_cursorPositionBegin.x < static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionBegin.y)))
-				std::size_t cursorGlyphEnd = GetGlyphIndex(m_cursorPositionEnd);
-
-				if (ignoreDefaultAction || cursorGlyphEnd == 0)
-					return true;
-
-				// When a text is selected, delete key does the same as delete and leave the character behind it
-				if (HasSelection())
-					EraseSelection();
-				else
-				{
-					Nz::String newText;
-
-					if (cursorGlyphBegin > 1)
-						newText.Append(m_text.SubString(0, m_text.GetCharacterPosition(cursorGlyphBegin - 1) - 1));
-
-					if (cursorGlyphEnd < m_text.GetLength())
-						newText.Append(m_text.SubString(m_text.GetCharacterPosition(cursorGlyphEnd)));
-
-					// Move cursor before setting text (to prevent SetText to move our cursor)
 					MoveCursor(-1);
-
-					SetText(newText);
-				}
-
-				return true;
 			}
-
-			case Nz::Keyboard::Delete:
-			{
-				if (HasSelection())
-					EraseSelection();
-				else
-					Erase(GetGlyphIndex(m_cursorPositionBegin));
-
-				return true;
-			}
-
-			case Nz::Keyboard::Down:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyDown(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				if (HasSelection())
-					SetCursorPosition(m_cursorPositionEnd);
-
-				MoveCursor({0, 1});
-				return true;
-			}
-
-			case Nz::Keyboard::End:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyEnd(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				std::size_t lineCount = m_drawer.GetLineCount();
-				if (key.control && lineCount > 0)
-					SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(lineCount - 1)), static_cast<unsigned int>(lineCount - 1) });
-				else
-					SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
-
-				return true;
-			}
-
-			case Nz::Keyboard::Home:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyHome(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				SetCursorPosition({ 0U, key.control ? 0U : m_cursorPositionEnd.y });
-				return true;
-			}
-
-			case Nz::Keyboard::Left:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyLeft(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				if (HasSelection())
-					SetCursorPosition(m_cursorPositionBegin);
-				else if (key.control)
-				{
-					std::size_t index = GetGlyphIndex(m_cursorPositionBegin);
-
-					if (index == 0)
-						return true;
-
-					std::size_t spaceIndex = m_text.FindLast(' ', index - 2);
-					std::size_t endlIndex = m_text.FindLast('\n', index - 1);
-
-					if ((spaceIndex > endlIndex || endlIndex == Nz::String::npos) && spaceIndex != Nz::String::npos)
-						SetCursorPosition(spaceIndex + 1);
-					else if (endlIndex != Nz::String::npos)
-					{
-						if (index == endlIndex + 1)
-							SetCursorPosition(endlIndex);
-						else
-							SetCursorPosition(endlIndex + 1);
-					}
-					else
-						SetCursorPosition({ 0U, m_cursorPositionBegin.y });
-				}
-				else
-					MoveCursor(-1);
-
-				return true;
-			}
-
-			case Nz::Keyboard::Return:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyReturn(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				if (!m_multiLineEnabled)
-					break;
-
-				if (HasSelection())
-					EraseSelection();
-
-				Write(Nz::String('\n'));
-				return true;;
-			}
-
-			case Nz::Keyboard::Right:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyRight(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				if (HasSelection())
-					SetCursorPosition(m_cursorPositionEnd);
-				else if (key.control)
-				{
-					std::size_t index = GetGlyphIndex(m_cursorPositionEnd);
-					std::size_t spaceIndex = m_text.Find(' ', index);
-					std::size_t endlIndex = m_text.Find('\n', index);
-
-					if (spaceIndex < endlIndex && spaceIndex != Nz::String::npos)
-					{
-						if (m_text.GetSize() > spaceIndex)
-							SetCursorPosition(spaceIndex + 1);
-						else
-							SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
-					}
-					else if (endlIndex != Nz::String::npos)
-					{
-						if (index == endlIndex)
-							SetCursorPosition(endlIndex + 1);
-						else
-							SetCursorPosition(endlIndex);
-					}
-					else
-						SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
-				}
-				else
-					MoveCursor(1);
-
-				return true;
-			}
-
-			case Nz::Keyboard::Up:
-			{
-				bool ignoreDefaultAction = false;
-				OnTextAreaKeyUp(this, &ignoreDefaultAction);
-
-				if (ignoreDefaultAction)
-					return true;
-
-				if (HasSelection())
-					SetCursorPosition(m_cursorPositionBegin);
-
-				MoveCursor({0, -1});
-				return true;
-			}
-
-			case Nz::Keyboard::Tab:
-			{
-				if (!m_tabEnabled)
-					return false;
-
-				if (HasSelection())
-				{
-					for(unsigned line = m_cursorPositionBegin.y; line <= m_cursorPositionEnd.y; ++line)
-					{
-						const Nz::Vector2ui cursorPositionBegin = m_cursorPositionBegin;
-						const Nz::Vector2ui cursorPositionEnd = m_cursorPositionEnd;
-
-						if (key.shift)
-						{
-							if (m_drawer.GetLineGlyphCount(line) == 0)
-								continue;
-
-							std::size_t firstGlyph = GetGlyphIndex({ 0U, line });
-
-							if (m_text[m_text.GetCharacterPosition(firstGlyph)] == '\t')
-							{
-								Erase(firstGlyph);
-								SetSelection(cursorPositionBegin - (cursorPositionBegin.y == line && cursorPositionBegin.x != 0U ? Nz::Vector2ui { 1U, 0U } : Nz::Vector2ui {}),
-								             cursorPositionEnd - (cursorPositionEnd.y == line && cursorPositionEnd.x != 0U ? Nz::Vector2ui { 1U, 0U } : Nz::Vector2ui {}));
-							}
-						}
-						else
-						{
-							Write(Nz::String('\t'), { 0U, line });
-							SetSelection(cursorPositionBegin + (cursorPositionBegin.y == line && cursorPositionBegin.x != 0U ? Nz::Vector2ui { 1U, 0U } : Nz::Vector2ui {}),
-							             cursorPositionEnd + (cursorPositionEnd.y == line ? Nz::Vector2ui { 1U, 0U } : Nz::Vector2ui {}));
-						}
-					}
-				}
-				else if (key.shift)
-				{
-					std::size_t currentGlyph = GetGlyphIndex(m_cursorPositionBegin);
-
-					if (currentGlyph > 0 && m_text[m_text.GetCharacterPosition(currentGlyph - 1U)] == '\t') // Check if previous glyph is a tab
-					{
-						Erase(currentGlyph - 1U);
-
-						if (m_cursorPositionBegin.x < static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionBegin.y)))
-							MoveCursor(-1);
-					}
-				}
-				else
-					Write(Nz::String('\t'));
-
-				return true;
-			}
-
-			default:
-				break;
 		}
-
-		return false;
 	}
 
-	void TextAreaWidget::OnKeyReleased(const Nz::WindowEvent::KeyEvent& /*key*/)
+	void TextAreaWidget::HandleSelectionIndentation(bool add)
 	{
-	}
+		for (unsigned line = m_cursorPositionBegin.y; line <= m_cursorPositionEnd.y; ++line)
-
-	void TextAreaWidget::OnMouseButtonPress(int x, int y, Nz::Mouse::Button button)
-	{
-		if (button == Nz::Mouse::Left)
 		{
-			SetFocus();
+			const Nz::Vector2ui cursorPositionBegin = m_cursorPositionBegin;
+			const Nz::Vector2ui cursorPositionEnd = m_cursorPositionEnd;
 
-			Nz::Vector2ui hoveredGlyph = GetHoveredGlyph(float(x), float(y));
+			if (add)
-
+			{
-			// Shift extends selection
+				Write(Nz::String('\t'), { 0U, line });
-			if (Nz::Keyboard::IsKeyPressed(Nz::Keyboard::LShift) || Nz::Keyboard::IsKeyPressed(Nz::Keyboard::RShift))
+				SetSelection(cursorPositionBegin + (cursorPositionBegin.y == line && cursorPositionBegin.x != 0U ? Nz::Vector2ui{ 1U, 0U } : Nz::Vector2ui{}),
-				SetSelection(hoveredGlyph, m_selectionCursor);
+				             cursorPositionEnd + (cursorPositionEnd.y == line ? Nz::Vector2ui{ 1U, 0U } : Nz::Vector2ui{}));
+			}
 			else
 			{
-				SetCursorPosition(hoveredGlyph);
+				if (m_drawer.GetLineGlyphCount(line) == 0)
-				m_selectionCursor = m_cursorPositionBegin;
+					continue;
-			}
 
-			m_isMouseButtonDown = true;
+				std::size_t firstGlyph = GetGlyphIndex({ 0U, line });
+
+				if (m_text[m_text.GetCharacterPosition(firstGlyph)] == '\t')
+				{
+					Erase(firstGlyph);
+					SetSelection(cursorPositionBegin - (cursorPositionBegin.y == line && cursorPositionBegin.x != 0U ? Nz::Vector2ui{ 1U, 0U } : Nz::Vector2ui{}),
+					             cursorPositionEnd - (cursorPositionEnd.y == line && cursorPositionEnd.x != 0U ? Nz::Vector2ui{ 1U, 0U } : Nz::Vector2ui{}));
+				}
+			}
 		}
 	}
 
-	void TextAreaWidget::OnMouseButtonRelease(int, int, Nz::Mouse::Button button)
+	void TextAreaWidget::HandleWordCursorMove(bool left)
 	{
-		if (button == Nz::Mouse::Left)
+		if (left)
-			m_isMouseButtonDown = false;
-	}
-
-	void TextAreaWidget::OnMouseEnter()
-	{
-		if (!Nz::Mouse::IsButtonPressed(Nz::Mouse::Left))
-			m_isMouseButtonDown = false;
-	}
-
-	void TextAreaWidget::OnMouseMoved(int x, int y, int deltaX, int deltaY)
-	{
-		if (m_isMouseButtonDown)
-			SetSelection(m_selectionCursor, GetHoveredGlyph(float(x), float(y)));
-	}
-
-	void TextAreaWidget::OnTextEntered(char32_t character, bool /*repeated*/)
-	{
-		if (m_readOnly)
-			return;
-
-		if (Nz::Unicode::GetCategory(character) == Nz::Unicode::Category_Other_Control || (m_characterFilter && !m_characterFilter(character)))
-			return;
-
-		if (HasSelection())
-			EraseSelection();
-
-		Write(Nz::String::Unicode(character));
-	}
-
-	void TextAreaWidget::RefreshCursor()
-	{
-		if (m_readOnly)
-			return;
-
-		auto GetGlyph = [&](const Nz::Vector2ui& glyphPosition, std::size_t* glyphIndex) -> const Nz::AbstractTextDrawer::Glyph*
 		{
-			const auto& lineInfo = m_drawer.GetLine(glyphPosition.y);
+			std::size_t index = GetGlyphIndex(m_cursorPositionBegin);
+			if (index == 0)
+				return;
 
-			std::size_t cursorGlyph = GetGlyphIndex({ glyphPosition.x, glyphPosition.y });
+			std::size_t spaceIndex = m_text.FindLast(' ', index - 2);
-			if (glyphIndex)
+			std::size_t endlIndex = m_text.FindLast('\n', index - 1);
-				*glyphIndex = cursorGlyph;
 
-			std::size_t glyphCount = m_drawer.GetGlyphCount();
+			if ((spaceIndex > endlIndex || endlIndex == Nz::String::npos) && spaceIndex != Nz::String::npos)
-			if (glyphCount > 0 && lineInfo.glyphIndex < cursorGlyph)
+				SetCursorPosition(spaceIndex + 1);
+			else if (endlIndex != Nz::String::npos)
 			{
-				const auto& glyph = m_drawer.GetGlyph(std::min(cursorGlyph, glyphCount - 1));
+				if (index == endlIndex + 1)
-				return &glyph;
+					SetCursorPosition(endlIndex);
+				else
+					SetCursorPosition(endlIndex + 1);
 			}
 			else
-				return nullptr;
+				SetCursorPosition({ 0U, m_cursorPositionBegin.y });
-		};
-
-		// Move text so that cursor is always visible
-		const auto* lastGlyph = GetGlyph(m_cursorPositionEnd, nullptr);
-		float glyphPos = (lastGlyph) ? lastGlyph->bounds.x : 0.f;
-		float glyphWidth = (lastGlyph) ? lastGlyph->bounds.width : 0.f;
-
-		auto& node = m_textEntity->GetComponent<Ndk::NodeComponent>();
-		float textPosition = node.GetPosition(Nz::CoordSys_Local).x - paddingWidth;
-		float cursorPosition = glyphPos + textPosition;
-		float width = GetWidth();
-
-		if (width <= m_drawer.GetBounds().width)
-		{
-			if (cursorPosition + glyphWidth > width)
-				node.Move(width - cursorPosition - glyphWidth, 0.f);
-			else if (cursorPosition - glyphWidth < 0.f)
-				node.Move(-cursorPosition + glyphWidth, 0.f);
 		}
 		else
-			node.Move(-textPosition, 0.f); // Reset text position if we have enough room to show everything
-
-		// Show cursor/selection
-		std::size_t selectionLineCount = m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1;
-		std::size_t oldSpriteCount = m_cursorSprites.size();
-		if (m_cursorSprites.size() != selectionLineCount)
 		{
-			m_cursorSprites.resize(m_cursorPositionEnd.y - m_cursorPositionBegin.y + 1);
+			std::size_t index = GetGlyphIndex(m_cursorPositionEnd);
-			for (std::size_t i = oldSpriteCount; i < m_cursorSprites.size(); ++i)
+			std::size_t spaceIndex = m_text.Find(' ', index);
+			std::size_t endlIndex = m_text.Find('\n', index);
+
+			if (spaceIndex < endlIndex && spaceIndex != Nz::String::npos)
 			{
-				m_cursorSprites[i] = Nz::Sprite::New();
+				if (m_text.GetSize() > spaceIndex)
-				m_cursorSprites[i]->SetMaterial(Nz::Material::New("Translucent2D"));
+					SetCursorPosition(spaceIndex + 1);
+				else
+					SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
 			}
-		}
+			else if (endlIndex != Nz::String::npos)
-
-		float lineHeight = float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight);
-
-		GraphicsComponent& gfxComponent = m_cursorEntity->GetComponent<GraphicsComponent>();
-		gfxComponent.Clear();
-
-		for (unsigned int i = m_cursorPositionBegin.y; i <= m_cursorPositionEnd.y; ++i)
-		{
-			const auto& lineInfo = m_drawer.GetLine(i);
-
-			Nz::SpriteRef& cursorSprite = m_cursorSprites[i - m_cursorPositionBegin.y];
-			if (i == m_cursorPositionBegin.y || i == m_cursorPositionEnd.y)
 			{
-				auto GetGlyphPos = [&](const Nz::Vector2ui& glyphPosition)
+				if (index == endlIndex)
-				{
+					SetCursorPosition(endlIndex + 1);
-					std::size_t glyphIndex;
+				else
-					const auto* glyph = GetGlyph(glyphPosition, &glyphIndex);
+					SetCursorPosition(endlIndex);
-					if (glyph)
-					{
-						float position = glyph->bounds.x;
-						if (glyphIndex >= m_drawer.GetGlyphCount())
-							position += glyph->bounds.width;
-
-						return position;
-					}
-					else
-						return 0.f;
-				};
-
-				float beginX = (i == m_cursorPositionBegin.y) ? GetGlyphPos({ m_cursorPositionBegin.x, i }) : 0.f;
-				float endX = (i == m_cursorPositionEnd.y) ? GetGlyphPos({ m_cursorPositionEnd.x, i }) : lineInfo.bounds.width;
-				float spriteSize = std::max(endX - beginX, 1.f);
-
-				cursorSprite->SetColor((m_cursorPositionBegin == m_cursorPositionEnd) ? Nz::Color::Black : Nz::Color(0, 0, 0, 50));
-				cursorSprite->SetSize(spriteSize, float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight));
-
-				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ beginX, lineInfo.bounds.y, 0.f }));
 			}
 			else
-			{
+				SetCursorPosition({ static_cast<unsigned int>(m_drawer.GetLineGlyphCount(m_cursorPositionEnd.y)), m_cursorPositionEnd.y });
-				cursorSprite->SetColor(Nz::Color(0, 0, 0, 50));
-				cursorSprite->SetSize(lineInfo.bounds.width, float(m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight));
-
-				gfxComponent.Attach(cursorSprite, Nz::Matrix4f::Translate({ 0.f, lineInfo.bounds.y, 0.f }));
-			}
 		}
 	}
 
@@ -677,10 +252,4 @@ namespace Ndk
 
 		SetCursorPosition(m_cursorPositionBegin); //< Refresh cursor position (prevent it from being outside of the text)
 	}
-
-	void TextAreaWidget::UpdateTextSprite()
-	{
-		m_textSprite->Update(m_drawer);
-		SetPreferredSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));
-	}
 }

include/Nazara/Utility.hpp

@@ -54,6 +54,7 @@
 #include <Nazara/Utility/MeshData.hpp>
 #include <Nazara/Utility/Node.hpp>
 #include <Nazara/Utility/PixelFormat.hpp>
+#include <Nazara/Utility/RichTextDrawer.hpp>
 #include <Nazara/Utility/Sequence.hpp>
 #include <Nazara/Utility/SimpleTextDrawer.hpp>
 #include <Nazara/Utility/SkeletalMesh.hpp>

include/Nazara/Utility/AbstractTextDrawer.hpp

@@ -27,6 +27,8 @@ namespace Nz
 			AbstractTextDrawer() = default;
 			virtual ~AbstractTextDrawer();
 
+			virtual void Clear() = 0;
+
 			virtual const Recti& GetBounds() const = 0;
 			virtual Font* GetFont(std::size_t index) const = 0;
 			virtual std::size_t GetFontCount() const = 0;
@@ -35,6 +37,9 @@ namespace Nz
 			virtual const Line& GetLine(std::size_t index) const = 0;
 			virtual std::size_t GetLineCount() const = 0;
 			inline std::size_t GetLineGlyphCount(std::size_t index) const;
+			virtual float GetMaxLineWidth() const = 0;
+
+			virtual void SetMaxLineWidth(float lineWidth) = 0;
 
 			struct Glyph
 			{

include/Nazara/Utility/RichTextDrawer.hpp

@@ -26,29 +26,33 @@ namespace Nz
 			RichTextDrawer(RichTextDrawer&& drawer);
 			~RichTextDrawer();
 
-			BlockRef AppendText(const String& str);
+			BlockRef AppendText(const String& str, bool forceNewBlock = false);
 
-			inline void Clear();
+			void Clear() override;
+
+			inline std::size_t FindBlock(std::size_t glyphIndex) const;
 
 			inline unsigned int GetBlockCharacterSize(std::size_t index) const;
 			inline const Color& GetBlockColor(std::size_t index) const;
 			inline std::size_t GetBlockCount() const;
+			inline std::size_t GetBlockFirstGlyphIndex(std::size_t index) const;
 			inline const FontRef& GetBlockFont(std::size_t index) const;
 			inline TextStyleFlags GetBlockStyle(std::size_t index) const;
 			inline const String& GetBlockText(std::size_t index) const;
 
+			inline BlockRef GetBlock(std::size_t index);
+			const Recti& GetBounds() const override;
 			inline unsigned int GetDefaultCharacterSize() const;
 			inline const Color& GetDefaultColor() const;
 			inline const FontRef& GetDefaultFont() const;
 			inline TextStyleFlags GetDefaultStyle() const;
-
-			const Recti& GetBounds() const override;
 			Font* GetFont(std::size_t index) const override;
 			std::size_t GetFontCount() const override;
 			const Glyph& GetGlyph(std::size_t index) const override;
 			std::size_t GetGlyphCount() const override;
 			const Line& GetLine(std::size_t index) const override;
 			std::size_t GetLineCount() const override;
+			float GetMaxLineWidth() const override;
 
 			void MergeBlocks();
 
@@ -65,9 +69,13 @@ namespace Nz
 			inline void SetDefaultFont(const FontRef& font);
 			inline void SetDefaultStyle(TextStyleFlags style);
 
+			void SetMaxLineWidth(float lineWidth) override;
+
 			RichTextDrawer& operator=(const RichTextDrawer& drawer);
 			RichTextDrawer& operator=(RichTextDrawer&& drawer);
 
+			static constexpr std::size_t InvalidBlockIndex = std::numeric_limits<std::size_t>::max();
+
 			//static RichTextDrawer Draw(const String& str, unsigned int characterSize, TextStyleFlags style = TextStyle_Regular, const Color& color = Color::White);
 			//static RichTextDrawer Draw(Font* font, const String& str, unsigned int characterSize, TextStyleFlags style = TextStyle_Regular, const Color& color = Color::White);
 
@@ -94,6 +102,7 @@ namespace Nz
 			struct Block
 			{
 				std::size_t fontIndex;
+				std::size_t glyphIndex;
 				Color color;
 				String text;
 				TextStyleFlags style;
@@ -123,6 +132,7 @@ namespace Nz
 			mutable Recti m_bounds;
 			mutable Vector2ui m_drawPos;
 			mutable bool m_glyphUpdated;
+			float m_maxLineWidth;
 			unsigned int m_defaultCharacterSize;
 	};
 
@@ -137,6 +147,7 @@ namespace Nz
 
 			inline unsigned int GetCharacterSize() const;
 			inline Color GetColor() const;
+			inline std::size_t GetFirstGlyphIndex() const;
 			inline const FontRef& GetFont() const;
 			inline TextStyleFlags GetStyle() const;
 			inline const String& GetText() const;

include/Nazara/Utility/RichTextDrawer.inl

@@ -7,13 +7,38 @@
 
 namespace Nz
 {
-	inline void RichTextDrawer::Clear()
+	inline std::size_t RichTextDrawer::FindBlock(std::size_t glyphIndex) const
 	{
-		m_fontIndexes.clear();
+		// Binary search
-		m_blocks.clear();
+		std::size_t count = m_blocks.size();
-		m_fonts.clear();
+		std::size_t step;
-		m_glyphs.clear();
+
-		ClearGlyphs();
+		std::size_t i = InvalidBlockIndex;
+		std::size_t first = 0;
+		std::size_t last = count;
+		while (count > 0)
+		{
+			i = first;
+			step = count / 2;
+
+			i += step;
+
+			if (m_blocks[i].glyphIndex < glyphIndex)
+			{
+				first = i + 1;
+				count -= step + 1;
+			}
+			else
+				count = step;
+		}
+
+		return i;
+	}
+
+	inline auto RichTextDrawer::GetBlock(std::size_t index) -> BlockRef
+	{
+		NazaraAssert(index < m_blocks.size(), "Invalid block index");
+		return BlockRef(*this, index);
 	}
 
 	inline unsigned int RichTextDrawer::GetBlockCharacterSize(std::size_t index) const
@@ -33,6 +58,12 @@ namespace Nz
 		return m_blocks.size();
 	}
 
+	inline std::size_t RichTextDrawer::GetBlockFirstGlyphIndex(std::size_t index) const
+	{
+		NazaraAssert(index < m_blocks.size(), "Invalid block index");
+		return m_blocks[index].glyphIndex;
+	}
+
 	inline const FontRef& RichTextDrawer::GetBlockFont(std::size_t index) const
 	{
 		NazaraAssert(index < m_blocks.size(), "Invalid block index");
@@ -204,8 +235,19 @@ namespace Nz
 	inline void RichTextDrawer::SetBlockText(std::size_t index, const String& str)
 	{
 		NazaraAssert(index < m_blocks.size(), "Invalid block index");
+
+		std::size_t previousLength = m_blocks[index].text.GetLength();
+
 		m_blocks[index].text = str;
 
+		std::size_t newLength = m_blocks[index].text.GetLength();
+		if (newLength != previousLength)
+		{
+			std::size_t delta = newLength - previousLength; //< Underflow allowed
+			for (std::size_t i = index + 1; i < m_blocks.size(); ++i)
+				m_blocks[i].glyphIndex += delta;
+		}
+
 		InvalidateGlyphs();
 	}
 
@@ -291,6 +333,17 @@ namespace Nz
 		return m_drawer.GetBlockStyle(m_blockIndex);
 	}
 
+	/*!
+	* Returns the first glyph index at which starts the referenced block
+	* \return The first glyph index concerned by this block
+	*
+	* \see GetText
+	*/
+	inline std::size_t RichTextDrawer::BlockRef::GetFirstGlyphIndex() const
+	{
+		return m_drawer.GetBlockFirstGlyphIndex(m_blockIndex);
+	}
+
 	/*!
 	* Returns the text of the referenced block
 	* \return The referenced block text

include/Nazara/Utility/SimpleTextDrawer.hpp

@@ -26,7 +26,7 @@ namespace Nz
 
 			void AppendText(const String& str);
 
-			void Clear();
+			void Clear() override;
 
 			const Recti& GetBounds() const override;
 			unsigned int GetCharacterSize() const;

src/Nazara/Utility/RichTextDrawer.cpp

@@ -13,7 +13,7 @@ namespace Nz
 	m_defaultColor(Color::White),
 	//m_outlineColor(Color::Black),
 	m_defaultStyle(TextStyle_Regular),
-	m_glyphUpdated(true),
+	m_glyphUpdated(false),
 	//m_maxLineWidth(std::numeric_limits<float>::infinity()),
 	//m_outlineThickness(0.f),
 	m_defaultCharacterSize(24)
@@ -51,7 +51,7 @@ namespace Nz
 
 	RichTextDrawer::~RichTextDrawer() = default;
 
-	auto RichTextDrawer::AppendText(const String& str) -> BlockRef
+	auto RichTextDrawer::AppendText(const String& str, bool forceNewBlock) -> BlockRef
 	{
 		NazaraAssert(!str.IsEmpty(), "String cannot be empty");
 
@@ -66,13 +66,23 @@ namespace Nz
 		};
 
 		// Check if last block has the same property as default, else create a new block
-		if (m_blocks.empty() || !HasDefaultProperties(m_blocks.back()))
+		if (forceNewBlock || m_blocks.empty() || !HasDefaultProperties(m_blocks.back()))
 		{
+			std::size_t glyphIndex;
+			if (!m_blocks.empty())
+			{
+				Block& lastBlock = m_blocks.back();
+				glyphIndex = lastBlock.glyphIndex + lastBlock.text.GetLength();
+			}
+			else
+				glyphIndex = 0;
+
 			m_blocks.emplace_back();
 			Block& newBlock = m_blocks.back();
 			newBlock.characterSize = m_defaultCharacterSize;
 			newBlock.color = m_defaultColor;
 			newBlock.fontIndex = defaultFontIndex;
+			newBlock.glyphIndex = glyphIndex;
 			newBlock.style = m_defaultStyle;
 			newBlock.text = str;
 
@@ -87,6 +97,15 @@ namespace Nz
 		return BlockRef(*this, m_blocks.size() - 1);
 	}
 
+	void RichTextDrawer::Clear()
+	{
+		m_fontIndexes.clear();
+		m_blocks.clear();
+		m_fonts.clear();
+		m_glyphs.clear();
+		ClearGlyphs();
+	}
+
 	const Recti& RichTextDrawer::GetBounds() const
 	{
 		if (!m_glyphUpdated)
@@ -140,6 +159,11 @@ namespace Nz
 		return m_lines.size();
 	}
 
+	float RichTextDrawer::GetMaxLineWidth() const
+	{
+		return m_maxLineWidth;
+	}
+
 	void RichTextDrawer::MergeBlocks()
 	{
 		if (m_blocks.size() < 2)
@@ -180,6 +204,13 @@ namespace Nz
 		m_blocks.erase(m_blocks.begin() + index);
 	}
 
+	void RichTextDrawer::SetMaxLineWidth(float lineWidth)
+	{
+		m_maxLineWidth = lineWidth;
+
+		//TODO: Implement max line width
+	}
+
 	RichTextDrawer& RichTextDrawer::operator=(const RichTextDrawer& drawer)
 	{
 		DisconnectFontSlots();
@@ -472,5 +503,7 @@ namespace Nz
 				GenerateGlyphs(fontData.font, block.color, block.style, block.characterSize, block.color, 0.f, block.text);
 			}
 		}
+		else
+			m_lines.emplace_back(Line{ Rectf::Zero(), 0 }); //< Ensure there's always a line
 	}
 }