lineedit.h

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#ifndef LINEEDIT_H
#define LINEEDIT_H
 
/* ============================================================
* Falkon - Qt web browser
* Copyright (C) 2010-2017 David Rosca <nowrep@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>.
* ============================================================ */
 
#include <QLineEdit>
#include <QTextLayout>
#include "qzcommon.h"
 
class QHBoxLayout;
 
/*
LineEdit is a subclass of QLineEdit that provides an easy and simple
way to add widgets on the left or right hand side of the text.
 
The layout of the widgets on either side are handled by a QHBoxLayout.
You can set the spacing around the widgets with setWidgetSpacing().
 
As widgets are added to the class they are inserted from the outside
into the center of the widget.
*/
class SideWidget;
class FALKON_EXPORT LineEdit : public QLineEdit
{
    Q_OBJECT
    Q_PROPERTY(QSize fixedsize READ size WRITE setFixedSize)
    Q_PROPERTY(int leftMargin READ leftMargin WRITE setLeftMargin)
    Q_PROPERTY(int fixedwidth READ width WRITE setFixedWidth)
    Q_PROPERTY(int fixedheight READ height WRITE setFixedHeight)
    Q_PROPERTY(int minHeight READ minHeight WRITE setMinHeight)
 
public:
    using TextFormat = QList<QTextLayout::FormatRange>;
 
    enum WidgetPosition {
        LeftSide,
        RightSide
    };
 
    enum EditAction {
        Undo = 0,
        Redo = 1,
        Cut = 2,
        Copy = 3,
        Paste = 4,
        PasteAndGo = 5,
        Delete = 6,
        ClearAll = 7,
        SelectAll = 8
    };
 
    LineEdit(QWidget* parent = nullptr);
 
    void addWidget(QWidget* widget, WidgetPosition position);
    void removeWidget(QWidget* widget);
    void setWidgetSpacing(int spacing);
    int widgetSpacing() const;
    int leftMargin() const;
 
    void setTextFormat(const TextFormat &format);
    void clearTextFormat();
 
    int minHeight() const;
    void setMinHeight(int height);
 
    QSize sizeHint() const override;
    QAction* editAction(EditAction action) const;
 
public Q_SLOTS:
    void setLeftMargin(int margin);
    void updateTextMargins();
 
protected:
    void focusInEvent(QFocusEvent* event) override;
    void mousePressEvent(QMouseEvent* event) override;
    void mouseReleaseEvent(QMouseEvent* event) override;
    void mouseDoubleClickEvent(QMouseEvent* event) override;
    void resizeEvent(QResizeEvent *event) override;
    bool event(QEvent* event) override;
 
    QMenu* createContextMenu();
 
private Q_SLOTS:
    void updateActions();
    void updatePasteActions();
    void slotDelete();
 
private:
    void init();
 
    SideWidget* m_leftWidget;
    SideWidget* m_rightWidget;
    QHBoxLayout* m_leftLayout;
    QHBoxLayout* m_rightLayout;
    QHBoxLayout* mainLayout;
    QAction* m_editActions[9];
 
    int m_minHeight;
    int m_leftMargin;
    bool m_ignoreMousePress;
};
 
 
class FALKON_EXPORT SideWidget : public QWidget
{
    Q_OBJECT
 
Q_SIGNALS:
    void sizeHintChanged();
 
public:
    SideWidget(QWidget* parent = nullptr);
 
protected:
    bool event(QEvent* event) override;
 
};
 
#endif // LINEEDIT_H