text: /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the QtQuick module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
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  ** accordance with the commercial license agreement provided with the
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  ** packaging of this file. Please review the following information to
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  ****************************************************************************/
  
  #ifndef QQUICKTEXTEDIT_P_P_H
  #define QQUICKTEXTEDIT_P_P_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists purely as an
  // implementation detail.  This header file may change from version to
  // version without notice, or even be removed.
  //
  // We mean it.
  //
  
  #include "qquicktextedit_p.h"
  #include "qquickimplicitsizeitem_p_p.h"
  #include "qquicktextutil_p.h"
  
  #include <QtQml/qqml.h>
  #include <QtCore/qlist.h>
  #include <private/qlazilyallocated_p.h>
  
  #include <limits>
  
  QT_BEGIN_NAMESPACE
  class QTextLayout;
  class QQuickTextDocumentWithImageResources;
  class QQuickTextControl;
  class QQuickTextNode;
  class QQuickTextNodeEngine;
  
  class Q_QUICK_PRIVATE_EXPORT QQuickTextEditPrivate : public QQuickImplicitSizeItemPrivate
  {
  public:
      Q_DECLARE_PUBLIC(QQuickTextEdit)
  
      typedef QQuickTextEdit Public;
  
      struct Node {
          explicit Node(int startPos = std::numeric_limits<int>::max(),
                        QQuickTextNode *node = nullptr)
              : m_startPos(startPos), m_node(node), m_dirty(false) { }
          QQuickTextNode* textNode() const { return m_node; }
          void moveStartPos(int delta) { Q_ASSERT(m_startPos + delta > 0); m_startPos += delta; }
          int startPos() const { return m_startPos; }
          void setDirty() { m_dirty = true; }
          bool dirty() const { return m_dirty; }
  
      private:
          int m_startPos;
          QQuickTextNode* m_node;
          bool m_dirty;
      };
      typedef QList<Node>::iterator TextNodeIterator;
  
      struct ExtraData {
          ExtraData();
  
          qreal padding;
          qreal topPadding;
          qreal leftPadding;
          qreal rightPadding;
          qreal bottomPadding;
          bool explicitTopPadding : 1;
          bool explicitLeftPadding : 1;
          bool explicitRightPadding : 1;
          bool explicitBottomPadding : 1;
          bool implicitResize : 1;
      };
      QLazilyAllocated<ExtraData> extra;
  
  
      QQuickTextEditPrivate()
          : color(QRgb(0xFF000000)), selectionColor(QRgb(0xFF000080)), selectedTextColor(QRgb(0xFFFFFFFF))
          , textMargin(0.0), xoff(0), yoff(0)
          , font(sourceFont), cursorComponent(nullptr), cursorItem(nullptr), document(nullptr), control(nullptr)
          , quickDocument(nullptr), lastSelectionStart(0), lastSelectionEnd(0), lineCount(0)
          , hAlign(QQuickTextEdit::AlignLeft), vAlign(QQuickTextEdit::AlignTop)
          , format(QQuickTextEdit::PlainText), wrapMode(QQuickTextEdit::NoWrap)
          , renderType(QQuickTextUtil::textRenderType<QQuickTextEdit>())
          , contentDirection(Qt::LayoutDirectionAuto)
          , mouseSelectionMode(QQuickTextEdit::SelectCharacters)
  #if QT_CONFIG(im)
          , inputMethodHints(Qt::ImhNone)
  #endif
          , updateType(UpdatePaintNode)
          , dirty(false), richText(false), cursorVisible(false), cursorPending(false)
          , focusOnPress(true), persistentSelection(false), requireImplicitWidth(false)
          , selectByMouse(false), canPaste(false), canPasteValid(false), hAlignImplicit(true)
          , textCached(true), inLayout(false), selectByKeyboard(false), selectByKeyboardSet(false)
          , hadSelection(false), markdownText(false)
      {
      }
  
      static QQuickTextEditPrivate *get(QQuickTextEdit *item) {
          return static_cast<QQuickTextEditPrivate *>(QObjectPrivate::get(item)); }
  
      void init();
  
      void resetInputMethod();
      void updateDefaultTextOption();
      void relayoutDocument();
      bool determineHorizontalAlignment();
      bool setHAlign(QQuickTextEdit::HAlignment, bool forceAlign = false);
      void mirrorChange() override;
      qreal getImplicitWidth() const override;
      Qt::LayoutDirection textDirection(const QString &text) const;
      bool isLinkHoveredConnected();
  
      void setNativeCursorEnabled(bool) {}
      void handleFocusEvent(QFocusEvent *event);
      void addCurrentTextNodeToRoot(QQuickTextNodeEngine *, QSGTransformNode *, QQuickTextNode*, TextNodeIterator&, int startPos);
      QQuickTextNode* createTextNode();
  
  #if QT_CONFIG(im)
      Qt::InputMethodHints effectiveInputMethodHints() const;
  #endif
  
      inline qreal padding() const { return extra.isAllocated() ? extra->padding : 0.0; }
      void setTopPadding(qreal value, bool reset = false);
      void setLeftPadding(qreal value, bool reset = false);
      void setRightPadding(qreal value, bool reset = false);
      void setBottomPadding(qreal value, bool reset = false);
  
      bool isImplicitResizeEnabled() const;
      void setImplicitResizeEnabled(bool enabled);
  
      QColor color;
      QColor selectionColor;
      QColor selectedTextColor;
  
      QSizeF contentSize;
  
      qreal textMargin;
      qreal xoff;
      qreal yoff;
  
      QString text;
      QUrl baseUrl;
      QFont sourceFont;
      QFont font;
  
      QQmlComponent* cursorComponent;
      QQuickItem* cursorItem;
      QQuickTextDocumentWithImageResources *document;
      QQuickTextControl *control;
      QQuickTextDocument *quickDocument;
      QList<Node> textNodeMap;
  
      int lastSelectionStart;
      int lastSelectionEnd;
      int lineCount;
  
      enum UpdateType {
          UpdateNone,
          UpdateOnlyPreprocess,
          UpdatePaintNode
      };
  
      QQuickTextEdit::HAlignment hAlign;
      QQuickTextEdit::VAlignment vAlign;
      QQuickTextEdit::TextFormat format;
      QQuickTextEdit::WrapMode wrapMode;
      QQuickTextEdit::RenderType renderType;
      Qt::LayoutDirection contentDirection;
      QQuickTextEdit::SelectionMode mouseSelectionMode;
  #if QT_CONFIG(im)
      Qt::InputMethodHints inputMethodHints;
  #endif
      UpdateType updateType;
      Qt::CursorShape cursorToRestoreAfterHover = Qt::IBeamCursor;
  
      bool dirty : 1;
      bool richText : 1;
      bool cursorVisible : 1;
      bool cursorPending : 1;
      bool focusOnPress : 1;
      bool persistentSelection : 1;
      bool requireImplicitWidth:1;
      bool selectByMouse:1;
      bool canPaste:1;
      bool canPasteValid:1;
      bool hAlignImplicit:1;
      bool textCached:1;
      bool inLayout:1;
      bool selectByKeyboard:1;
      bool selectByKeyboardSet:1;
      bool hadSelection : 1;
      bool markdownText : 1;
  };
  
  QT_END_NAMESPACE
  
  #endif // QQUICKTEXTEDIT_P_P_H
  