mirror of
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307 lines
7.9 KiB
C++
307 lines
7.9 KiB
C++
/**
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* \file fancylineedit.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Nokia Corporation (qt-info@nokia.com)
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*
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* Full author contact details are available in file CREDITS.
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*
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*/
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// Code taken from the Qt Creator project and customized a little
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#include <config.h>
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#include "FancyLineEdit.h"
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#if QT_VERSION >= 0x040600
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#include <QtCore/QEvent>
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#include <QtCore/QDebug>
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#include <QtCore/QString>
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#include <QtCore/QPropertyAnimation>
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#include <QtGui/QApplication>
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#include <QtGui/QMenu>
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#include <QtGui/QMouseEvent>
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#include <QtGui/QLabel>
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#include <QtGui/QAbstractButton>
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#include <QtGui/QPainter>
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#include <QtGui/QStyle>
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#include <QtGui/QPaintEvent>
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enum { margin = 6 };
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#define ICONBUTTON_HEIGHT 18
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#define FADE_TIME 160
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namespace lyx {
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namespace frontend {
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// --------- FancyLineEditPrivate
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class FancyLineEditPrivate : public QObject {
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public:
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explicit FancyLineEditPrivate(FancyLineEdit *parent);
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virtual bool eventFilter(QObject *obj, QEvent *event);
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FancyLineEdit *m_lineEdit;
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QPixmap m_pixmap[2];
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QMenu *m_menu[2];
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bool m_menuTabFocusTrigger[2];
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IconButton *m_iconbutton[2];
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bool m_iconEnabled[2];
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};
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FancyLineEditPrivate::FancyLineEditPrivate(FancyLineEdit *parent) :
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QObject(parent),
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m_lineEdit(parent)
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{
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for (int i = 0; i < 2; ++i) {
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m_menu[i] = 0;
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m_menuTabFocusTrigger[i] = false;
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m_iconbutton[i] = new IconButton(parent);
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m_iconbutton[i]->installEventFilter(this);
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m_iconbutton[i]->hide();
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m_iconbutton[i]->setAutoHide(false);
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m_iconEnabled[i] = false;
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}
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}
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bool FancyLineEditPrivate::eventFilter(QObject *obj, QEvent *event)
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{
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int buttonIndex = -1;
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for (int i = 0; i < 2; ++i) {
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if (obj == m_iconbutton[i]) {
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buttonIndex = i;
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break;
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}
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}
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if (buttonIndex == -1)
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return QObject::eventFilter(obj, event);
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switch (event->type()) {
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case QEvent::FocusIn:
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if (m_menuTabFocusTrigger[buttonIndex] && m_menu[buttonIndex]) {
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m_lineEdit->setFocus();
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m_menu[buttonIndex]->exec(m_iconbutton[buttonIndex]->mapToGlobal(
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m_iconbutton[buttonIndex]->rect().center()));
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return true;
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}
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default:
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break;
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}
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return QObject::eventFilter(obj, event);
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}
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// --------- FancyLineEdit
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FancyLineEdit::FancyLineEdit(QWidget *parent) :
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QLineEdit(parent),
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m_d(new FancyLineEditPrivate(this))
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{
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ensurePolished();
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updateMargins();
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connect(this, SIGNAL(textChanged(QString)), this, SLOT(checkButtons(QString)));
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connect(m_d->m_iconbutton[Left], SIGNAL(clicked()), this, SLOT(iconClicked()));
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connect(m_d->m_iconbutton[Right], SIGNAL(clicked()), this, SLOT(iconClicked()));
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}
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void FancyLineEdit::checkButtons(const QString &text)
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{
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if (m_oldText.isEmpty() || text.isEmpty()) {
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for (int i = 0; i < 2; ++i) {
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if (m_d->m_iconbutton[i]->hasAutoHide())
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m_d->m_iconbutton[i]->animateShow(!text.isEmpty());
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}
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m_oldText = text;
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}
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}
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FancyLineEdit::~FancyLineEdit()
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{
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}
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void FancyLineEdit::setButtonVisible(Side side, bool visible)
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{
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m_d->m_iconbutton[side]->setVisible(visible);
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m_d->m_iconEnabled[side] = visible;
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updateMargins();
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}
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bool FancyLineEdit::isButtonVisible(Side side) const
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{
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return m_d->m_iconEnabled[side];
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}
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void FancyLineEdit::iconClicked()
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{
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IconButton *button = qobject_cast<IconButton *>(sender());
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int index = -1;
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for (int i = 0; i < 2; ++i)
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if (m_d->m_iconbutton[i] == button)
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index = i;
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if (index == -1)
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return;
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if (m_d->m_menu[index]) {
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m_d->m_menu[index]->exec(QCursor::pos());
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} else {
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buttonClicked((Side)index);
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if (index == Left)
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leftButtonClicked();
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else if (index == Right)
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rightButtonClicked();
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}
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}
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void FancyLineEdit::updateMargins()
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{
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bool leftToRight = (layoutDirection() == Qt::LeftToRight);
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Side realLeft = (leftToRight ? Left : Right);
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Side realRight = (leftToRight ? Right : Left);
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int leftMargin = m_d->m_iconbutton[realLeft]->pixmap().width() + 8;
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int rightMargin = m_d->m_iconbutton[realRight]->pixmap().width() + 8;
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// Note KDE does not reserve space for the highlight color
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if (style()->inherits("OxygenStyle")) {
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leftMargin = qMax(24, leftMargin);
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rightMargin = qMax(24, rightMargin);
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}
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QMargins margins((m_d->m_iconEnabled[realLeft] ? leftMargin : 0), 0,
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(m_d->m_iconEnabled[realRight] ? rightMargin : 0), 0);
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setTextMargins(margins);
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}
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void FancyLineEdit::updateButtonPositions()
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{
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QRect contentRect = rect();
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for (int i = 0; i < 2; ++i) {
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Side iconpos = (Side)i;
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if (layoutDirection() == Qt::RightToLeft)
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iconpos = (iconpos == Left ? Right : Left);
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if (iconpos == FancyLineEdit::Right) {
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const int iconoffset = textMargins().right() + 4;
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m_d->m_iconbutton[i]->setGeometry(contentRect.adjusted(width() - iconoffset, 0, 0, 0));
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} else {
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const int iconoffset = textMargins().left() + 4;
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m_d->m_iconbutton[i]->setGeometry(contentRect.adjusted(0, 0, -width() + iconoffset, 0));
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}
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}
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}
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void FancyLineEdit::resizeEvent(QResizeEvent *)
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{
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updateButtonPositions();
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}
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void FancyLineEdit::setButtonPixmap(Side side, const QPixmap &buttonPixmap)
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{
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m_d->m_iconbutton[side]->setPixmap(buttonPixmap);
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updateMargins();
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updateButtonPositions();
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update();
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}
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QPixmap FancyLineEdit::buttonPixmap(Side side) const
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{
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return m_d->m_pixmap[side];
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}
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void FancyLineEdit::setButtonMenu(Side side, QMenu *buttonMenu)
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{
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m_d->m_menu[side] = buttonMenu;
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m_d->m_iconbutton[side]->setIconOpacity(1.0);
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}
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QMenu *FancyLineEdit::buttonMenu(Side side) const
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{
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return m_d->m_menu[side];
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}
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bool FancyLineEdit::hasMenuTabFocusTrigger(Side side) const
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{
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return m_d->m_menuTabFocusTrigger[side];
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}
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void FancyLineEdit::setMenuTabFocusTrigger(Side side, bool v)
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{
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if (m_d->m_menuTabFocusTrigger[side] == v)
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return;
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m_d->m_menuTabFocusTrigger[side] = v;
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m_d->m_iconbutton[side]->setFocusPolicy(v ? Qt::TabFocus : Qt::NoFocus);
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}
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bool FancyLineEdit::hasAutoHideButton(Side side) const
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{
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return m_d->m_iconbutton[side]->hasAutoHide();
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}
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void FancyLineEdit::setAutoHideButton(Side side, bool h)
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{
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m_d->m_iconbutton[side]->setAutoHide(h);
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if (h)
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m_d->m_iconbutton[side]->setIconOpacity(text().isEmpty() ? 0.0 : 1.0);
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else
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m_d->m_iconbutton[side]->setIconOpacity(1.0);
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}
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void FancyLineEdit::setButtonToolTip(Side side, const QString &tip)
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{
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m_d->m_iconbutton[side]->setToolTip(tip);
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}
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void FancyLineEdit::setButtonFocusPolicy(Side side, Qt::FocusPolicy policy)
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{
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m_d->m_iconbutton[side]->setFocusPolicy(policy);
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}
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// IconButton - helper class to represent a clickable icon
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IconButton::IconButton(QWidget *parent)
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: QAbstractButton(parent), m_autoHide(false)
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{
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setCursor(Qt::ArrowCursor);
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setFocusPolicy(Qt::NoFocus);
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}
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void IconButton::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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QRect pixmapRect = QRect(0, 0, m_pixmap.width(), m_pixmap.height());
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pixmapRect.moveCenter(rect().center());
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if (m_autoHide)
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painter.setOpacity(m_iconOpacity);
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painter.drawPixmap(pixmapRect, m_pixmap);
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}
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void IconButton::animateShow(bool visible)
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{
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if (visible) {
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QPropertyAnimation *animation = new QPropertyAnimation(this, "iconOpacity");
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animation->setDuration(FADE_TIME);
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animation->setEndValue(1.0);
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animation->start(QAbstractAnimation::DeleteWhenStopped);
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} else {
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QPropertyAnimation *animation = new QPropertyAnimation(this, "iconOpacity");
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animation->setDuration(FADE_TIME);
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animation->setEndValue(0.0);
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animation->start(QAbstractAnimation::DeleteWhenStopped);
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}
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}
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}
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}
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#endif // QT_VERSION >= 0x040600
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#include "moc_FancyLineEdit.cpp"
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