From 8d7647e286e07690de15a6ff9189307ee1a3517c Mon Sep 17 00:00:00 2001 From: Lars Knoll Date: Tue, 5 Jul 2011 13:05:37 +0200 Subject: added a QLineControl class to QtGui The class does not have support for completion, but is otherwise mostly on par with the control in QtWidgets. Change-Id: I2c89f8ea910cfacba67d4e5e56d8d650d27760b9 --- src/gui/text/qlinecontrol_p.h | 454 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 454 insertions(+) create mode 100644 src/gui/text/qlinecontrol_p.h (limited to 'src/gui/text/qlinecontrol_p.h') diff --git a/src/gui/text/qlinecontrol_p.h b/src/gui/text/qlinecontrol_p.h new file mode 100644 index 0000000000..d3db94e1ff --- /dev/null +++ b/src/gui/text/qlinecontrol_p.h @@ -0,0 +1,454 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QLINECONTROL_P_H +#define QLINECONTROL_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 "QtCore/qglobal.h" + +#include "QtGui/qtextlayout.h" +#include "QtCore/qpointer.h" +#include "QtGui/qclipboard.h" +#include "QtGui/qvalidator.h" +#include "QtGui/qpalette.h" +#include "QtCore/qpoint.h" + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Gui) + +class Q_GUI_EXPORT QLineControl : public QObject +{ + Q_OBJECT + +public: + QLineControl(const QString &txt = QString()) + : m_cursor(0), m_preeditCursor(0), m_cursorWidth(0), m_layoutDirection(Qt::LayoutDirectionAuto), + m_hideCursor(false), m_separator(0), m_readOnly(0), + m_dragEnabled(0), m_echoMode(Normal), m_textDirty(0), m_selDirty(0), + m_validInput(1), m_blinkStatus(0), m_blinkPeriod(0), m_blinkTimer(0), m_deleteAllTimer(0), + m_ascent(0), m_maxLength(32767), m_lastCursorPos(-1), + m_tripleClickTimer(0), m_maskData(0), m_modifiedState(0), m_undoState(0), + m_selstart(0), m_selend(0), m_passwordEchoEditing(false) + { + init(txt); + } + + enum EchoMode { + Normal, + NoEcho, + Password, + PasswordEchoOnEdit + }; + + + ~QLineControl() + { + delete [] m_maskData; + } + + int nextMaskBlank(int pos) + { + int c = findInMask(pos, true, false); + m_separator |= (c != pos); + return (c != -1 ? c : m_maxLength); + } + + int prevMaskBlank(int pos) + { + int c = findInMask(pos, false, false); + m_separator |= (c != pos); + return (c != -1 ? c : 0); + } + + bool isUndoAvailable() const { return !m_readOnly && m_undoState; } + bool isRedoAvailable() const { return !m_readOnly && m_undoState < (int)m_history.size(); } + void clearUndo() { m_history.clear(); m_modifiedState = m_undoState = 0; } + + bool isModified() const { return m_modifiedState != m_undoState; } + void setModified(bool modified) { m_modifiedState = modified ? -1 : m_undoState; } + + bool allSelected() const { return !m_text.isEmpty() && m_selstart == 0 && m_selend == (int)m_text.length(); } + bool hasSelectedText() const { return !m_text.isEmpty() && m_selend > m_selstart; } + + int width() const { return qRound(m_textLayout.lineAt(0).width()) + 1; } + int height() const { return qRound(m_textLayout.lineAt(0).height()) + 1; } + int ascent() const { return m_ascent; } + qreal naturalTextWidth() const { return m_textLayout.lineAt(0).naturalTextWidth(); } + + void setSelection(int start, int length); + + inline QString selectedText() const { return hasSelectedText() ? m_text.mid(m_selstart, m_selend - m_selstart) : QString(); } + QString textBeforeSelection() const { return hasSelectedText() ? m_text.left(m_selstart) : QString(); } + QString textAfterSelection() const { return hasSelectedText() ? m_text.mid(m_selend) : QString(); } + + int selectionStart() const { return hasSelectedText() ? m_selstart : -1; } + int selectionEnd() const { return hasSelectedText() ? m_selend : -1; } + bool inSelection(int x) const + { + if (m_selstart >= m_selend) + return false; + int pos = xToPos(x, QTextLine::CursorOnCharacter); + return pos >= m_selstart && pos < m_selend; + } + + void removeSelection() + { + int priorState = m_undoState; + removeSelectedText(); + finishChange(priorState); + } + + int start() const { return 0; } + int end() const { return m_text.length(); } + +#ifndef QT_NO_CLIPBOARD + void copy(QClipboard::Mode mode = QClipboard::Clipboard) const; + void paste(QClipboard::Mode mode = QClipboard::Clipboard); +#endif + + int cursor() const{ return m_cursor; } + int preeditCursor() const { return m_preeditCursor; } + + int cursorWidth() const { return m_cursorWidth; } + void setCursorWidth(int value) { m_cursorWidth = value; } + + Qt::CursorMoveStyle cursorMoveStyle() const { return m_textLayout.cursorMoveStyle(); } + void setCursorMoveStyle(Qt::CursorMoveStyle style) { m_textLayout.setCursorMoveStyle(style); } + + void moveCursor(int pos, bool mark = false); + void cursorForward(bool mark, int steps) + { + int c = m_cursor; + if (steps > 0) { + while (steps--) + c = cursorMoveStyle() == Qt::VisualMoveStyle ? m_textLayout.rightCursorPosition(c) + : m_textLayout.nextCursorPosition(c); + } else if (steps < 0) { + while (steps++) + c = cursorMoveStyle() == Qt::VisualMoveStyle ? m_textLayout.leftCursorPosition(c) + : m_textLayout.previousCursorPosition(c); + } + moveCursor(c, mark); + } + + void cursorWordForward(bool mark) { moveCursor(m_textLayout.nextCursorPosition(m_cursor, QTextLayout::SkipWords), mark); } + void cursorWordBackward(bool mark) { moveCursor(m_textLayout.previousCursorPosition(m_cursor, QTextLayout::SkipWords), mark); } + + void home(bool mark) { moveCursor(0, mark); } + void end(bool mark) { moveCursor(text().length(), mark); } + + int xToPos(int x, QTextLine::CursorPosition = QTextLine::CursorBetweenCharacters) const; + QRect cursorRect() const; + + qreal cursorToX(int cursor) const { return m_textLayout.lineAt(0).cursorToX(cursor); } + qreal cursorToX() const + { + int cursor = m_cursor; + if (m_preeditCursor != -1) + cursor += m_preeditCursor; + return cursorToX(cursor); + } + + bool isReadOnly() const { return m_readOnly; } + void setReadOnly(bool enable) { m_readOnly = enable; } + + QString text() const + { + QString res = m_maskData ? stripString(m_text) : m_text; + return (res.isNull() ? QString::fromLatin1("") : res); + } + void setText(const QString &txt) { internalSetText(txt, -1, false); } + QString displayText() const { return m_textLayout.text(); } + + void backspace(); + void del(); + void deselect() { internalDeselect(); finishChange(); } + void selectAll() { m_selstart = m_selend = m_cursor = 0; moveCursor(m_text.length(), true); } + + void insert(const QString &); + void clear(); + void undo() { internalUndo(); finishChange(-1, true); } + void redo() { internalRedo(); finishChange(); } + void selectWordAtPos(int); + + EchoMode echoMode() const { return EchoMode(m_echoMode); } + void setEchoMode(EchoMode mode) + { + m_echoMode = mode; + m_passwordEchoEditing = false; + updateDisplayText(); + } + + int maxLength() const { return m_maxLength; } + void setMaxLength(int maxLength) + { + if (m_maskData) + return; + m_maxLength = maxLength; + setText(m_text); + } + +#ifndef QT_NO_VALIDATOR + const QValidator *validator() const { return m_validator; } + void setValidator(const QValidator *v) { m_validator = const_cast(v); } +#endif + + int cursorPosition() const { return m_cursor; } + void setCursorPosition(int pos) { if (pos <= m_text.length()) moveCursor(qMax(0, pos)); } + + bool hasAcceptableInput() const { return hasAcceptableInput(m_text); } + bool fixup(); + + QString inputMask() const { return m_maskData ? m_inputMask + QLatin1Char(';') + m_blank : QString(); } + void setInputMask(const QString &mask) + { + parseInputMask(mask); + if (m_maskData) + moveCursor(nextMaskBlank(0)); + } + + // input methods +#ifndef QT_NO_IM + bool composeMode() const { return !m_textLayout.preeditAreaText().isEmpty(); } + void setPreeditArea(int cursor, const QString &text) { m_textLayout.setPreeditArea(cursor, text); } +#endif + + QString preeditAreaText() const { return m_textLayout.preeditAreaText(); } + + void updatePasswordEchoEditing(bool editing); + bool passwordEchoEditing() const { return m_passwordEchoEditing; } + + QChar passwordCharacter() const { return m_passwordCharacter; } + void setPasswordCharacter(const QChar &character) { m_passwordCharacter = character; updateDisplayText(); } + + Qt::LayoutDirection layoutDirection() const { + if (m_layoutDirection == Qt::LayoutDirectionAuto) { + if (m_text.isEmpty()) + return QGuiApplication::keyboardInputDirection(); + return m_text.isRightToLeft() ? Qt::RightToLeft : Qt::LeftToRight; + } + return m_layoutDirection; + } + void setLayoutDirection(Qt::LayoutDirection direction) + { + if (direction != m_layoutDirection) { + m_layoutDirection = direction; + updateDisplayText(); + } + } + + void setFont(const QFont &font) { m_textLayout.setFont(font); updateDisplayText(); } + + void processInputMethodEvent(QInputMethodEvent *event); + void processMouseEvent(QMouseEvent* ev); + void processKeyEvent(QKeyEvent* ev); + + int cursorBlinkPeriod() const { return m_blinkPeriod; } + void setCursorBlinkPeriod(int msec); + void resetCursorBlinkTimer(); + + bool cursorBlinkStatus() const { return m_blinkStatus; } + + QString cancelText() const { return m_cancelText; } + void setCancelText(const QString &text) { m_cancelText = text; } + + const QPalette &palette() const { return m_palette; } + void setPalette(const QPalette &p) { m_palette = p; } + + enum DrawFlags { + DrawText = 0x01, + DrawSelections = 0x02, + DrawCursor = 0x04, + DrawAll = DrawText | DrawSelections | DrawCursor + }; + void draw(QPainter *, const QPoint &, const QRect &, int flags = DrawAll); + + bool processEvent(QEvent *ev); + + QTextLayout *textLayout() + { + return &m_textLayout; + } + +private: + void init(const QString &txt); + void removeSelectedText(); + void internalSetText(const QString &txt, int pos = -1, bool edited = true); + void updateDisplayText(bool forceUpdate = false); + + void internalInsert(const QString &s); + void internalDelete(bool wasBackspace = false); + void internalRemove(int pos); + + inline void internalDeselect() + { + m_selDirty |= (m_selend > m_selstart); + m_selstart = m_selend = 0; + } + + void internalUndo(int until = -1); + void internalRedo(); + + QString m_text; + QPalette m_palette; + int m_cursor; + int m_preeditCursor; + int m_cursorWidth; + Qt::LayoutDirection m_layoutDirection; + uint m_hideCursor : 1; // used to hide the m_cursor inside preedit areas + uint m_separator : 1; + uint m_readOnly : 1; + uint m_dragEnabled : 1; + uint m_echoMode : 2; + uint m_textDirty : 1; + uint m_selDirty : 1; + uint m_validInput : 1; + uint m_blinkStatus : 1; + int m_blinkPeriod; // 0 for non-blinking cursor + int m_blinkTimer; + int m_deleteAllTimer; + int m_ascent; + int m_maxLength; + int m_lastCursorPos; + QList m_transactions; + QPoint m_tripleClick; + int m_tripleClickTimer; + QString m_cancelText; + + void emitCursorPositionChanged(); + + bool finishChange(int validateFromState = -1, bool update = false, bool edited = true); + +#ifndef QT_NO_VALIDATOR + QPointer m_validator; +#endif + + struct MaskInputData { + enum Casemode { NoCaseMode, Upper, Lower }; + QChar maskChar; // either the separator char or the inputmask + bool separator; + Casemode caseMode; + }; + QString m_inputMask; + QChar m_blank; + MaskInputData *m_maskData; + + // undo/redo handling + enum CommandType { Separator, Insert, Remove, Delete, RemoveSelection, DeleteSelection, SetSelection }; + struct Command { + inline Command() {} + inline Command(CommandType t, int p, QChar c, int ss, int se) : type(t),uc(c),pos(p),selStart(ss),selEnd(se) {} + uint type : 4; + QChar uc; + int pos, selStart, selEnd; + }; + int m_modifiedState; + int m_undoState; + QVector m_history; + void addCommand(const Command& cmd); + + inline void separate() { m_separator = true; } + + // selection + int m_selstart; + int m_selend; + + // masking + void parseInputMask(const QString &maskFields); + bool isValidInput(QChar key, QChar mask) const; + bool hasAcceptableInput(const QString &text) const; + QString maskString(uint pos, const QString &str, bool clear = false) const; + QString clearString(uint pos, uint len) const; + QString stripString(const QString &str) const; + int findInMask(int pos, bool forward, bool findSeparator, QChar searchChar = QChar()) const; + + // complex text layout + QTextLayout m_textLayout; + + bool m_passwordEchoEditing; + QChar m_passwordCharacter; + +Q_SIGNALS: + void cursorPositionChanged(int, int); + void selectionChanged(); + + void displayTextChanged(const QString &); + void textChanged(const QString &); + void textEdited(const QString &); + + void resetInputContext(); + void updateMicroFocus(); + + void accepted(); + void editingFinished(); + void updateNeeded(const QRect &); + +#ifdef QT_KEYPAD_NAVIGATION + void editFocusChange(bool); +#endif +protected: + virtual void timerEvent(QTimerEvent *event); + +private Q_SLOTS: + void _q_clipboardChanged(); + void _q_deleteSelected(); + +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QLineControl_P_H -- cgit v1.2.3