diff options
Diffstat (limited to 'kalarm/lib/colourcombo.cpp')
| -rw-r--r-- | kalarm/lib/colourcombo.cpp | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/kalarm/lib/colourcombo.cpp b/kalarm/lib/colourcombo.cpp new file mode 100644 index 000000000..d5fa052ac --- /dev/null +++ b/kalarm/lib/colourcombo.cpp @@ -0,0 +1,239 @@ +/* + * colourcombo.cpp - colour selection combo box + * Program: kalarm + * Copyright (c) 2001 - 2003, 2005 by David Jarvie <software@astrojar.org.uk> + * + * Some code taken from kdelibs/kdeui/kcolorcombo.cpp in the KDE libraries: + * Copyright (C) 1997 Martin Jones (mjones@kde.org) + * + * 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 <qpainter.h> + +#include <klocale.h> +#include <kcolordialog.h> + +#include "preferences.h" +#include "colourcombo.moc" + + +ColourCombo::ColourCombo(QWidget* parent, const char* name, const QColor& defaultColour) + : QComboBox(parent, name), + mColourList(Preferences::messageColours()), + mSelectedColour(defaultColour), + mCustomColour(255, 255, 255), + mReadOnly(false), + mDisabled(false) +{ + addColours(); + connect(this, SIGNAL(activated(int)), SLOT(slotActivated(int))); + connect(this, SIGNAL(highlighted(int)), SLOT(slotHighlighted(int))); + Preferences::connect(SIGNAL(preferencesChanged()), this, SLOT(slotPreferencesChanged())); +} + +void ColourCombo::setColour(const QColor& colour) +{ + mSelectedColour = colour; + addColours(); +} + +/****************************************************************************** +* Set a new colour selection. +*/ +void ColourCombo::setColours(const ColourList& colours) +{ + mColourList = colours; + if (mSelectedColour != mCustomColour + && !mColourList.contains(mSelectedColour)) + { + // The current colour has been deleted + mSelectedColour = mColourList.count() ? mColourList.first() : mCustomColour; + } + addColours(); +} + +/****************************************************************************** +* Called when the user changes the preference settings. +* If the colour list has changed, update the colours displayed. +*/ +void ColourCombo::slotPreferencesChanged() +{ + const ColourList& prefColours = Preferences::messageColours(); + if (prefColours != mColourList) + setColours(prefColours); // update the display with the new colours +} + +/****************************************************************************** +* Enable or disable the control. +* If it is disabled, its colour is set to the dialog background colour. +*/ +void ColourCombo::setEnabled(bool enable) +{ + if (enable && mDisabled) + { + mDisabled = false; + setColour(mSelectedColour); + } + else if (!enable && !mDisabled) + { + mSelectedColour = color(); + int end = count(); + if (end > 1) + { + // Add a dialog background colour item + QPixmap pm = *pixmap(1); + pm.fill(paletteBackgroundColor()); + insertItem(pm); + setCurrentItem(end); + } + mDisabled = true; + } + QComboBox::setEnabled(enable); +} + +void ColourCombo::slotActivated(int index) +{ + if (index) + mSelectedColour = mColourList[index - 1]; + else + { + if (KColorDialog::getColor(mCustomColour, this) == QDialog::Accepted) + { + QRect rect; + drawCustomItem(rect, false); + } + mSelectedColour = mCustomColour; + } + emit activated(mSelectedColour); +} + +void ColourCombo::slotHighlighted(int index) +{ + mSelectedColour = index ? mColourList[index - 1] : mCustomColour; + emit highlighted(mSelectedColour); +} + +/****************************************************************************** +* Initialise the items in the combo box to one for each colour in the list. +*/ +void ColourCombo::addColours() +{ + clear(); + + for (ColourList::const_iterator it = mColourList.begin(); ; ++it) + { + if (it == mColourList.end()) + { + mCustomColour = mSelectedColour; + break; + } + if (mSelectedColour == *it) + break; + } + + QRect rect; + drawCustomItem(rect, true); + + QPainter painter; + QPixmap pixmap(rect.width(), rect.height()); + int i = 1; + for (ColourList::const_iterator it = mColourList.begin(); it != mColourList.end(); ++i, ++it) + { + painter.begin(&pixmap); + QBrush brush(*it); + painter.fillRect(rect, brush); + painter.end(); + + insertItem(pixmap); + pixmap.detach(); + + if (*it == mSelectedColour.rgb()) + setCurrentItem(i); + } +} + +void ColourCombo::drawCustomItem(QRect& rect, bool insert) +{ + QPen pen; + if (qGray(mCustomColour.rgb()) < 128) + pen.setColor(Qt::white); + else + pen.setColor(Qt::black); + + QPainter painter; + QFontMetrics fm = QFontMetrics(painter.font()); + rect.setRect(0, 0, width(), fm.height() + 4); + QPixmap pixmap(rect.width(), rect.height()); + + painter.begin(&pixmap); + QBrush brush(mCustomColour); + painter.fillRect(rect, brush); + painter.setPen(pen); + painter.drawText(2, fm.ascent() + 2, i18n("Custom...")); + painter.end(); + + if (insert) + insertItem(pixmap); + else + changeItem(pixmap, 0); + pixmap.detach(); +} + +void ColourCombo::setReadOnly(bool ro) +{ + mReadOnly = ro; +} + +void ColourCombo::resizeEvent(QResizeEvent* re) +{ + QComboBox::resizeEvent(re); + addColours(); +} + +void ColourCombo::mousePressEvent(QMouseEvent* e) +{ + if (mReadOnly) + { + // Swallow up the event if it's the left button + if (e->button() == Qt::LeftButton) + return; + } + QComboBox::mousePressEvent(e); +} + +void ColourCombo::mouseReleaseEvent(QMouseEvent* e) +{ + if (!mReadOnly) + QComboBox::mouseReleaseEvent(e); +} + +void ColourCombo::mouseMoveEvent(QMouseEvent* e) +{ + if (!mReadOnly) + QComboBox::mouseMoveEvent(e); +} + +void ColourCombo::keyPressEvent(QKeyEvent* e) +{ + if (!mReadOnly || e->key() == Qt::Key_Escape) + QComboBox::keyPressEvent(e); +} + +void ColourCombo::keyReleaseEvent(QKeyEvent* e) +{ + if (!mReadOnly) + QComboBox::keyReleaseEvent(e); +} |