Sdk/Widgets: Add TextAreaWidget (experimental)
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Lynix
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// This file was automatically generated on 27 Oct 2016 at 18:53:37
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// This file was automatically generated on 27 Oct 2016 at 21:39:00
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#pragma once
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#include <NDK/Widgets/ButtonWidget.hpp>
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#include <NDK/Widgets/LabelWidget.hpp>
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#include <NDK/Widgets/TextAreaWidget.hpp>
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#endif // NDK_WIDGETS_GLOBAL_HPP
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#pragma once
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#ifndef NDK_WIDGETS_TEXTAREAWIDGET_HPP
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#define NDK_WIDGETS_TEXTAREAWIDGET_HPP
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#include <NDK/Prerequesites.hpp>
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#include <NDK/BaseWidget.hpp>
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#include <Nazara/Utility/SimpleTextDrawer.hpp>
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#include <Nazara/Graphics/TextSprite.hpp>
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namespace Ndk
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{
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class World;
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class NDK_API TextAreaWidget : public BaseWidget
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{
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public:
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TextAreaWidget(BaseWidget* parent = nullptr);
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TextAreaWidget(const TextAreaWidget&) = delete;
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TextAreaWidget(TextAreaWidget&&) = default;
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~TextAreaWidget() = default;
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void AppendText(const Nz::String& text);
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//virtual TextAreaWidget* Clone() const = 0;
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std::size_t GetHoveredGlyph(float x, float y) const;
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void ResizeToContent() override;
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void SetText(const Nz::String& text);
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TextAreaWidget& operator=(const TextAreaWidget&) = delete;
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TextAreaWidget& operator=(TextAreaWidget&&) = default;
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private:
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void RefreshCursor();
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void OnMouseEnter() override;
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void OnMouseButtonPress(int /*x*/, int /*y*/, Nz::Mouse::Button button) override;
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void OnMouseMoved(int x, int y, int deltaX, int deltaY) override;
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void OnMouseExit() override;
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void OnTextEntered(char32_t character, bool repeated) override;
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void Write(const Nz::String& text);
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EntityHandle m_cursorEntity;
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EntityHandle m_textEntity;
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Nz::SimpleTextDrawer m_drawer;
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Nz::SpriteRef m_cursorSprite;
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Nz::TextSpriteRef m_textSprite;
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std::size_t m_cursorPosition;
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};
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}
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#include <NDK/Widgets/TextAreaWidget.inl>
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#endif // NDK_WIDGETS_TEXTAREAWIDGET_HPP
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#include <NDK/Widgets/TextAreaWidget.hpp>
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namespace Ndk
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{
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}
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#include <NDK/Widgets/TextAreaWidget.hpp>
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#include <Nazara/Core/Unicode.hpp>
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#include <NDK/Components/GraphicsComponent.hpp>
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#include <NDK/Components/NodeComponent.hpp>
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#include <NDK/World.hpp>
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#include <limits>
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namespace Ndk
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{
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TextAreaWidget::TextAreaWidget(BaseWidget* parent) :
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BaseWidget(parent),
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m_cursorPosition(0U)
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{
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m_cursorSprite = Nz::Sprite::New();
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m_cursorSprite->SetColor(Nz::Color(192, 192, 192));
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m_cursorSprite->SetSize(1.f, m_drawer.GetFont()->GetSizeInfo(m_drawer.GetCharacterSize()).lineHeight);
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m_cursorEntity = CreateEntity();
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m_cursorEntity->AddComponent<GraphicsComponent>().Attach(m_cursorSprite, 10);
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m_cursorEntity->AddComponent<NodeComponent>().SetParent(this);
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m_cursorEntity->Enable(false);
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m_textSprite = Nz::TextSprite::New();
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m_textEntity = CreateEntity();
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m_textEntity->AddComponent<GraphicsComponent>().Attach(m_textSprite);
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m_textEntity->AddComponent<NodeComponent>().SetParent(this);
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Layout();
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}
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void TextAreaWidget::AppendText(const Nz::String& text)
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{
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m_drawer.AppendText(text);
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m_textSprite->Update(m_drawer);
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}
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std::size_t TextAreaWidget::GetHoveredGlyph(float x, float y) const
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{
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std::size_t glyphCount = m_drawer.GetGlyphCount();
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if (glyphCount > 0)
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{
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std::size_t lineCount = m_drawer.GetLineCount();
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std::size_t line = 0U;
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for (; line < lineCount - 1; ++line)
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{
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Nz::Rectf lineBounds = m_drawer.GetLine(line).bounds;
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if (lineBounds.GetMaximum().y > y)
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break;
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}
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std::size_t upperLimit = (line != lineCount - 1) ? m_drawer.GetLine(line + 1).glyphIndex : glyphCount;
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upperLimit = std::min(upperLimit, glyphCount);
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std::size_t i = m_drawer.GetLine(line).glyphIndex;
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for (; i < upperLimit - 1; ++i)
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{
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Nz::Rectf bounds = m_drawer.GetGlyph(i).bounds;
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if (x < bounds.x + bounds.width)
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break;
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}
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return i;
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}
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return 0;
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}
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void TextAreaWidget::ResizeToContent()
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{
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SetContentSize(Nz::Vector2f(m_textSprite->GetBoundingVolume().obb.localBox.GetLengths()));
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}
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void TextAreaWidget::SetText(const Nz::String& text)
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{
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m_drawer.SetText(text);
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m_textSprite->Update(m_drawer);
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}
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void TextAreaWidget::RefreshCursor()
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{
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std::size_t lineCount = m_drawer.GetLineCount();
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std::size_t line = 0U;
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for (std::size_t i = line + 1; i < lineCount; ++i)
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{
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if (m_drawer.GetLine(i).glyphIndex > m_cursorPosition)
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break;
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line = i;
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}
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Nz::Rectf bounds = m_drawer.GetGlyph(m_cursorPosition).bounds;
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m_cursorEntity->GetComponent<Ndk::NodeComponent>().SetPosition(bounds.x, m_drawer.GetLine(line).bounds.y);
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}
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void TextAreaWidget::OnMouseEnter()
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{
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m_cursorEntity->Enable(true);
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}
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void TextAreaWidget::OnMouseButtonPress(int x, int y, Nz::Mouse::Button button)
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{
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if (button == Nz::Mouse::Left)
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{
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GrabKeyboard();
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m_cursorPosition = GetHoveredGlyph(x, y);
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RefreshCursor();
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}
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}
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void TextAreaWidget::OnMouseMoved(int x, int y, int deltaX, int deltaY)
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{
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}
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void TextAreaWidget::OnMouseExit()
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{
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m_cursorEntity->Enable(false);
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}
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void TextAreaWidget::OnTextEntered(char32_t character, bool /*repeated*/)
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{
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switch (character)
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{
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case '\b':
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{
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Nz::String text = m_drawer.GetText();
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text.Resize(-1, Nz::String::HandleUtf8);
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m_drawer.SetText(text);
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m_textSprite->Update(m_drawer);
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break;
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}
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case '\r':
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case '\n':
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Write(Nz::String('\n'));
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break;
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default:
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{
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if (Nz::Unicode::GetCategory(character) == Nz::Unicode::Category_Other_Control)
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break;
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Write(Nz::String::Unicode(character));
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break;
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}
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}
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}
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void TextAreaWidget::Write(const Nz::String& text)
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{
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if (m_cursorPosition >= m_drawer.GetGlyphCount())
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{
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AppendText(text);
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m_cursorPosition = m_drawer.GetGlyphCount();
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}
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else
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{
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Nz::String currentText = m_drawer.GetText();
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currentText.Insert(m_cursorPosition, text);
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SetText(currentText);
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m_cursorPosition += text.GetSize();
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}
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RefreshCursor();
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}
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}
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