490 lines
12 KiB
C++
490 lines
12 KiB
C++
// 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()));
|
|
}
|
|
}
|