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#include "filterwidget_p.h"
#include "iconloader_p.h"
#include <QtGui/QVBoxLayout>
#include <QtGui/QHBoxLayout>
#include <QtGui/QLineEdit>
#include <QtGui/QFocusEvent>
#include <QtGui/QPalette>
#include <QtGui/QCursor>
#include <QtGui/QToolButton>
#include <QtGui/QPainter>
#include <QtGui/QStyle>
#include <QtGui/QStyleOption>
#include <QtCore/QDebug>
#include <QtCore/QPropertyAnimation>
enum { debugFilter = 0 };
QT_BEGIN_NAMESPACE
namespace qdesigner_internal {
HintLineEdit::HintLineEdit(QWidget *parent) :
QLineEdit(parent),
m_defaultFocusPolicy(focusPolicy()),
m_refuseFocus(false)
{
}
IconButton::IconButton(QWidget *parent)
: QToolButton(parent)
{
setCursor(Qt::ArrowCursor);
}
void IconButton::paintEvent(QPaintEvent *)
{
QPainter painter(this);
// Note isDown should really use the active state but in most styles
// this has no proper feedback
QIcon::Mode state = QIcon::Disabled;
if (isEnabled())
state = isDown() ? QIcon::Selected : QIcon::Normal;
QPixmap iconpixmap = icon().pixmap(QSize(ICONBUTTON_SIZE, ICONBUTTON_SIZE),
state, QIcon::Off);
QRect pixmapRect = QRect(0, 0, iconpixmap.width(), iconpixmap.height());
pixmapRect.moveCenter(rect().center());
painter.setOpacity(m_fader);
painter.drawPixmap(pixmapRect, iconpixmap);
}
void IconButton::animateShow(bool visible)
{
if (visible) {
QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
animation->setDuration(160);
animation->setEndValue(1.0);
animation->start(QAbstractAnimation::DeleteWhenStopped);
} else {
QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
animation->setDuration(160);
animation->setEndValue(0.0);
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
}
bool HintLineEdit::refuseFocus() const
{
return m_refuseFocus;
}
void HintLineEdit::setRefuseFocus(bool v)
{
if (v == m_refuseFocus)
return;
m_refuseFocus = v;
setFocusPolicy(m_refuseFocus ? Qt::NoFocus : m_defaultFocusPolicy);
}
void HintLineEdit::mousePressEvent(QMouseEvent *e)
{
if (debugFilter)
qDebug() << Q_FUNC_INFO;
// Explicitly focus on click.
if (m_refuseFocus && !hasFocus())
setFocus(Qt::OtherFocusReason);
QLineEdit::mousePressEvent(e);
}
void HintLineEdit::focusInEvent(QFocusEvent *e)
{
if (debugFilter)
qDebug() << Q_FUNC_INFO;
if (m_refuseFocus) {
// Refuse the focus if the mouse it outside. In addition to the mouse
// press logic, this prevents a re-focussing which occurs once
// we actually had focus
const Qt::FocusReason reason = e->reason();
if (reason == Qt::ActiveWindowFocusReason || reason == Qt::PopupFocusReason) {
const QPoint mousePos = mapFromGlobal(QCursor::pos());
const bool refuse = !geometry().contains(mousePos);
if (debugFilter)
qDebug() << Q_FUNC_INFO << refuse ;
if (refuse) {
e->ignore();
return;
}
}
}
QLineEdit::focusInEvent(e);
}
// ------------------- FilterWidget
FilterWidget::FilterWidget(QWidget *parent, LayoutMode lm) :
QWidget(parent),
m_editor(new HintLineEdit(this)),
m_button(new IconButton(m_editor)),
m_buttonwidth(0)
{
m_editor->setPlaceholderText(tr("Filter"));
// Let the style determine minimum height for our widget
QSize size(ICONBUTTON_SIZE + 6, ICONBUTTON_SIZE + 2);
// Note KDE does not reserve space for the highlight color
if (style()->inherits("OxygenStyle")) {
size = size.expandedTo(QSize(24, 0));
}
// Make room for clear icon
QMargins margins = m_editor->textMargins();
if (layoutDirection() == Qt::LeftToRight)
margins.setRight(size.width());
else
margins.setLeft(size.width());
m_editor->setTextMargins(margins);
QHBoxLayout *l = new QHBoxLayout(this);
l->setMargin(0);
l->setSpacing(0);
if (lm == LayoutAlignRight)
l->addItem(new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum));
l->addWidget(m_editor);
// KDE has custom icons for this. Notice that icon namings are counter intuitive
// If these icons are not avaiable we use the freedesktop standard name before
// falling back to a bundled resource
QIcon icon = QIcon::fromTheme(layoutDirection() == Qt::LeftToRight ?
QLatin1String("edit-clear-locationbar-rtl") :
QLatin1String("edit-clear-locationbar-ltr"),
QIcon::fromTheme("edit-clear", createIconSet(QLatin1String("cleartext.png"))));
m_button->setIcon(icon);
m_button->setToolTip(tr("Clear text"));
connect(m_button, SIGNAL(clicked()), this, SLOT(reset()));
connect(m_editor, SIGNAL(textChanged(QString)), this, SLOT(checkButton(QString)));
connect(m_editor, SIGNAL(textEdited(QString)), this, SIGNAL(filterChanged(QString)));
}
QString FilterWidget::text() const
{
return m_editor->text();
}
void FilterWidget::checkButton(const QString &text)
{
if (m_oldText.isEmpty() || text.isEmpty())
m_button->animateShow(!m_editor->text().isEmpty());
m_oldText = text;
}
void FilterWidget::reset()
{
if (debugFilter)
qDebug() << Q_FUNC_INFO;
if (!m_editor->text().isEmpty()) {
// Editor has lost focus once this is pressed
m_editor->clear();
emit filterChanged(QString());
}
}
void FilterWidget::resizeEvent(QResizeEvent *)
{
QRect contentRect = m_editor->rect();
if (layoutDirection() == Qt::LeftToRight) {
const int iconoffset = m_editor->textMargins().right() + 4;
m_button->setGeometry(contentRect.adjusted(m_editor->width() - iconoffset, 0, 0, 0));
} else {
const int iconoffset = m_editor->textMargins().left() + 4;
m_button->setGeometry(contentRect.adjusted(0, 0, -m_editor->width() + iconoffset, 0));
}
}
bool FilterWidget::refuseFocus() const
{
return m_editor->refuseFocus();
}
void FilterWidget::setRefuseFocus(bool v)
{
m_editor->setRefuseFocus(v);
}
} // namespace qdesigner_internal
QT_END_NAMESPACE