diff options
Diffstat (limited to 'kalarm/lib/checkbox.cpp')
-rw-r--r-- | kalarm/lib/checkbox.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/kalarm/lib/checkbox.cpp b/kalarm/lib/checkbox.cpp new file mode 100644 index 000000000..c600a4950 --- /dev/null +++ b/kalarm/lib/checkbox.cpp @@ -0,0 +1,133 @@ +/* + * checkbox.cpp - check box with read-only option + * Program: kalarm + * Copyright (c) 2002, 2003 by David Jarvie <software@astrojar.org.uk> + * + * 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 2 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, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "checkbox.moc" + + +CheckBox::CheckBox(QWidget* parent, const char* name) + : QCheckBox(parent, name), + mFocusPolicy(focusPolicy()), + mFocusWidget(0), + mReadOnly(false) +{ } + +CheckBox::CheckBox(const QString& text, QWidget* parent, const char* name) + : QCheckBox(text, parent, name), + mFocusPolicy(focusPolicy()), + mFocusWidget(0), + mReadOnly(false) +{ } + +/****************************************************************************** +* Set the read-only status. If read-only, the checkbox can be toggled by the +* application, but not by the user. +*/ +void CheckBox::setReadOnly(bool ro) +{ + if ((int)ro != (int)mReadOnly) + { + mReadOnly = ro; + setFocusPolicy(ro ? QWidget::NoFocus : mFocusPolicy); + if (ro) + clearFocus(); + } +} + +/****************************************************************************** +* Specify a widget to receive focus when the checkbox is clicked on. +*/ +void CheckBox::setFocusWidget(QWidget* w, bool enable) +{ + mFocusWidget = w; + mFocusWidgetEnable = enable; + if (w) + connect(this, SIGNAL(clicked()), SLOT(slotClicked())); + else + disconnect(this, SIGNAL(clicked()), this, SLOT(slotClicked())); +} + +/****************************************************************************** +* Called when the checkbox is clicked. +* If it is now checked, focus is transferred to any specified focus widget. +*/ +void CheckBox::slotClicked() +{ + if (mFocusWidget && isChecked()) + { + if (mFocusWidgetEnable) + mFocusWidget->setEnabled(true); + mFocusWidget->setFocus(); + } +} + +/****************************************************************************** +* Event handlers to intercept events if in read-only mode. +* Any events which could change the checkbox state are discarded. +*/ +void CheckBox::mousePressEvent(QMouseEvent* e) +{ + if (mReadOnly) + { + // Swallow up the event if it's the left button + if (e->button() == Qt::LeftButton) + return; + } + QCheckBox::mousePressEvent(e); +} + +void CheckBox::mouseReleaseEvent(QMouseEvent* e) +{ + if (mReadOnly) + { + // Swallow up the event if it's the left button + if (e->button() == Qt::LeftButton) + return; + } + QCheckBox::mouseReleaseEvent(e); +} + +void CheckBox::mouseMoveEvent(QMouseEvent* e) +{ + if (!mReadOnly) + QCheckBox::mouseMoveEvent(e); +} + +void CheckBox::keyPressEvent(QKeyEvent* e) +{ + if (mReadOnly) + switch (e->key()) + { + case Qt::Key_Up: + case Qt::Key_Left: + case Qt::Key_Right: + case Qt::Key_Down: + // Process keys which shift the focus + break; + default: + return; + } + QCheckBox::keyPressEvent(e); +} + +void CheckBox::keyReleaseEvent(QKeyEvent* e) +{ + if (!mReadOnly) + QCheckBox::keyReleaseEvent(e); +} |