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tdelibs/kdeui/kpopupmenu.cpp

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/* This file is part of the KDE libraries
Copyright (C) 2000 Daniel M. Duley <mosfet@kde.org>
Copyright (C) 2002 Hamish Rodda <rodda@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <tqcursor.h>
#include <tqpainter.h>
#include <tqtimer.h>
#include <tqfontmetrics.h>
#ifdef USE_QT4
#undef None
#endif // USE_QT4
#include <tqstyle.h>
#include "kpopupmenu.h"
#include <kdebug.h>
#include <kapplication.h>
KPopupTitle::KPopupTitle(TQWidget *parent, const char *name)
: TQWidget(parent, name)
{
setMinimumSize(16, fontMetrics().height()+8);
}
KPopupTitle::KPopupTitle(KPixmapEffect::GradientType /* gradient */,
const TQColor &/* color */, const TQColor &/* textColor */,
TQWidget *parent, const char *name)
: TQWidget(parent, name)
{
calcSize();
}
KPopupTitle::KPopupTitle(const KPixmap & /* background */, const TQColor &/* color */,
const TQColor &/* textColor */, TQWidget *parent,
const char *name)
: TQWidget(parent, name)
{
calcSize();
}
void KPopupTitle::setTitle(const TQString &text, const TQPixmap *icon)
{
titleStr = text;
if (icon)
miniicon = *icon;
else
miniicon.resize(0, 0);
calcSize();
}
void KPopupTitle::setText( const TQString &text )
{
titleStr = text;
calcSize();
}
void KPopupTitle::setIcon( const TQPixmap &pix )
{
miniicon = pix;
calcSize();
}
void KPopupTitle::calcSize()
{
TQFont f = font();
f.setBold(true);
int w = miniicon.width()+TQFontMetrics(f).width(titleStr);
int h = QMAX( fontMetrics().height(), miniicon.height() );
setMinimumSize( w+16, h+8 );
}
void KPopupTitle::paintEvent(TQPaintEvent *)
{
TQRect r(rect());
TQPainter p(this);
kapp->tqstyle().tqdrawPrimitive(TQStyle::PE_HeaderSectionMenu, &p, r, tqpalette().active());
if (!miniicon.isNull())
p.drawPixmap(4, (r.height()-miniicon.height())/2, miniicon);
if (!titleStr.isNull())
{
p.setPen(tqpalette().active().text());
TQFont f = p.font();
f.setBold(true);
p.setFont(f);
if(!miniicon.isNull())
{
p.drawText(miniicon.width()+8, 0, width()-(miniicon.width()+8),
height(), AlignLeft | AlignVCenter | SingleLine,
titleStr);
}
else
{
p.drawText(0, 0, width(), height(),
AlignCenter | SingleLine, titleStr);
}
}
}
TQSize KPopupTitle::sizeHint() const
{
return minimumSize();
}
class KPopupMenu::KPopupMenuPrivate
{
public:
KPopupMenuPrivate ()
: noMatches(false)
, shortcuts(false)
, autoExec(false)
, lastHitIndex(-1)
, state(Qt::NoButton)
, m_ctxMenu(0)
{}
~KPopupMenuPrivate ()
{
delete m_ctxMenu;
}
TQString m_lastTitle;
// variables for keyboard navigation
TQTimer clearTimer;
bool noMatches : 1;
bool shortcuts : 1;
bool autoExec : 1;
TQString keySeq;
TQString originalText;
int lastHitIndex;
TQt::ButtonState state;
// support for RMB menus on menus
TQPopupMenu* m_ctxMenu;
static bool s_continueCtxMenuShow;
static int s_highlightedItem;
static KPopupMenu* s_contextedMenu;
};
int KPopupMenu::KPopupMenuPrivate::s_highlightedItem(-1);
KPopupMenu* KPopupMenu::KPopupMenuPrivate::s_contextedMenu(0);
bool KPopupMenu::KPopupMenuPrivate::s_continueCtxMenuShow(true);
KPopupMenu::KPopupMenu(TQWidget *parent, const char *name)
: TQPopupMenu(parent, name)
{
d = new KPopupMenuPrivate;
resetKeyboardVars();
connect(&(d->clearTimer), TQT_SIGNAL(timeout()), TQT_SLOT(resetKeyboardVars()));
}
KPopupMenu::~KPopupMenu()
{
if (KPopupMenuPrivate::s_contextedMenu == this)
{
KPopupMenuPrivate::s_contextedMenu = 0;
KPopupMenuPrivate::s_highlightedItem = -1;
}
delete d;
}
int KPopupMenu::insertTitle(const TQString &text, int id, int index)
{
KPopupTitle *titleItem = new KPopupTitle();
titleItem->setTitle(text);
int ret = insertItem(titleItem, id, index);
setItemEnabled(ret, false);
return ret;
}
int KPopupMenu::insertTitle(const TQPixmap &icon, const TQString &text, int id,
int index)
{
KPopupTitle *titleItem = new KPopupTitle();
titleItem->setTitle(text, &icon);
int ret = insertItem(titleItem, id, index);
setItemEnabled(ret, false);
return ret;
}
void KPopupMenu::changeTitle(int id, const TQString &text)
{
TQMenuItem *item = findItem(id);
if(item){
if(item->widget())
((KPopupTitle *)item->widget())->setTitle(text);
#ifndef NDEBUG
else
kdWarning() << "KPopupMenu: changeTitle() called with non-title id "<< id << endl;
#endif
}
#ifndef NDEBUG
else
kdWarning() << "KPopupMenu: changeTitle() called with invalid id " << id << endl;
#endif
}
void KPopupMenu::changeTitle(int id, const TQPixmap &icon, const TQString &text)
{
TQMenuItem *item = findItem(id);
if(item){
if(item->widget())
((KPopupTitle *)item->widget())->setTitle(text, &icon);
#ifndef NDEBUG
else
kdWarning() << "KPopupMenu: changeTitle() called with non-title id "<< id << endl;
#endif
}
#ifndef NDEBUG
else
kdWarning() << "KPopupMenu: changeTitle() called with invalid id " << id << endl;
#endif
}
TQString KPopupMenu::title(int id) const
{
if(id == -1) // obsolete
return d->m_lastTitle;
TQMenuItem *item = findItem(id);
if(item){
if(item->widget())
return ((KPopupTitle *)item->widget())->title();
else
qWarning("KPopupMenu: title() called with non-title id %d.", id);
}
else
qWarning("KPopupMenu: title() called with invalid id %d.", id);
return TQString::null;
}
TQPixmap KPopupMenu::titlePixmap(int id) const
{
TQMenuItem *item = findItem(id);
if(item){
if(item->widget())
return ((KPopupTitle *)item->widget())->icon();
else
qWarning("KPopupMenu: titlePixmap() called with non-title id %d.", id);
}
else
qWarning("KPopupMenu: titlePixmap() called with invalid id %d.", id);
TQPixmap tmp;
return tmp;
}
/**
* This is re-implemented for keyboard navigation.
*/
void KPopupMenu::closeEvent(TQCloseEvent*e)
{
if (d->shortcuts)
resetKeyboardVars();
TQPopupMenu::closeEvent(e);
}
void KPopupMenu::activateItemAt(int index)
{
d->state = Qt::NoButton;
TQPopupMenu::activateItemAt(index);
}
TQt::ButtonState KPopupMenu::state() const
{
return d->state;
}
void KPopupMenu::keyPressEvent(TQKeyEvent* e)
{
d->state = Qt::NoButton;
if (!d->shortcuts) {
// continue event processing by Qpopup
//e->ignore();
d->state = e->state();
TQPopupMenu::keyPressEvent(e);
return;
}
int i = 0;
bool firstpass = true;
TQString keyString = e->text();
// check for common commands dealt with by QPopup
int key = e->key();
if (key == Key_Escape || key == Key_Return || key == Key_Enter
|| key == Key_Up || key == Key_Down || key == Key_Left
|| key == Key_Right || key == Key_F1) {
resetKeyboardVars();
// continue event processing by Qpopup
//e->ignore();
d->state = e->state();
TQPopupMenu::keyPressEvent(e);
return;
} else if ( key == Key_Shift || key == Key_Control || key == Key_Alt || key == Key_Meta )
return TQPopupMenu::keyPressEvent(e);
// check to see if the user wants to remove a key from the sequence (backspace)
// or clear the sequence (delete)
if (!d->keySeq.isNull()) {
if (key == Key_Backspace) {
if (d->keySeq.length() == 1) {
resetKeyboardVars();
return;
}
// keep the last sequence in keyString
keyString = d->keySeq.left(d->keySeq.length() - 1);
// allow sequence matching to be tried again
resetKeyboardVars();
} else if (key == Key_Delete) {
resetKeyboardVars();
// clear active item
setActiveItem(0);
return;
} else if (d->noMatches) {
// clear if there are no matches
resetKeyboardVars();
// clear active item
setActiveItem(0);
} else {
// the key sequence is not a null string
// therefore the lastHitIndex is valid
i = d->lastHitIndex;
}
} else if (key == Key_Backspace && parentMenu) {
// backspace with no chars in the buffer... go back a menu.
hide();
resetKeyboardVars();
return;
}
d->keySeq += keyString;
int seqLen = d->keySeq.length();
for (; i < (int)count(); i++) {
// compare typed text with text of this entry
int j = idAt(i);
// don't search disabled entries
if (!isItemEnabled(j))
continue;
TQString thisText;
// retrieve the right text
// (the last selected item one may have additional ampersands)
if (i == d->lastHitIndex)
thisText = d->originalText;
else
thisText = text(j);
// if there is an accelerator present, remove it
if ((int)accel(j) != 0)
thisText = thisText.replace("&", TQString());
// chop text to the search length
thisText = thisText.left(seqLen);
// do the search
if (!thisText.find(d->keySeq, 0, false)) {
if (firstpass) {
// match
setActiveItem(i);
// check to see if we're underlining a different item
if (d->lastHitIndex != i)
// yes; revert the underlining
changeItem(idAt(d->lastHitIndex), d->originalText);
// set the original text if it's a different item
if (d->lastHitIndex != i || d->lastHitIndex == -1)
d->originalText = text(j);
// underline the currently selected item
changeItem(j, underlineText(d->originalText, d->keySeq.length()));
// remember what's going on
d->lastHitIndex = i;
// start/restart the clear timer
d->clearTimer.start(5000, true);
// go around for another try, to see if we can execute
firstpass = false;
} else {
// don't allow execution
return;
}
}
// fall through to allow execution
}
if (!firstpass) {
if (d->autoExec) {
// activate anything
activateItemAt(d->lastHitIndex);
resetKeyboardVars();
} else if (findItem(idAt(d->lastHitIndex)) &&
findItem(idAt(d->lastHitIndex))->popup()) {
// only activate sub-menus
activateItemAt(d->lastHitIndex);
resetKeyboardVars();
}
return;
}
// no matches whatsoever, clean up
resetKeyboardVars(true);
//e->ignore();
TQPopupMenu::keyPressEvent(e);
}
bool KPopupMenu::focusNextPrevChild( bool next )
{
resetKeyboardVars();
return TQPopupMenu::focusNextPrevChild( next );
}
TQString KPopupMenu::underlineText(const TQString& text, uint length)
{
TQString ret = text;
for (uint i = 0; i < length; i++) {
if (ret[2*i] != '&')
ret.insert(2*i, "&");
}
return ret;
}
void KPopupMenu::resetKeyboardVars(bool noMatches /* = false */)
{
// Clean up keyboard variables
if (d->lastHitIndex != -1) {
changeItem(idAt(d->lastHitIndex), d->originalText);
d->lastHitIndex = -1;
}
if (!noMatches) {
d->keySeq = TQString::null;
}
d->noMatches = noMatches;
}
void KPopupMenu::setKeyboardShortcutsEnabled(bool enable)
{
d->shortcuts = enable;
}
void KPopupMenu::setKeyboardShortcutsExecute(bool enable)
{
d->autoExec = enable;
}
/**
* End keyboard navigation.
*/
/**
* RMB menus on menus
*/
void KPopupMenu::mousePressEvent(TQMouseEvent* e)
{
if (d->m_ctxMenu && d->m_ctxMenu->isVisible())
{
// hide on a second context menu event
d->m_ctxMenu->hide();
}
TQPopupMenu::mousePressEvent(e);
}
void KPopupMenu::mouseReleaseEvent(TQMouseEvent* e)
{
// Save the button, and the modifiers from state()
d->state = TQt::ButtonState(e->button() | (e->state() & KeyButtonMask));
if ( !d->m_ctxMenu || !d->m_ctxMenu->isVisible() )
TQPopupMenu::mouseReleaseEvent(e);
}
TQPopupMenu* KPopupMenu::contextMenu()
{
if (!d->m_ctxMenu)
{
d->m_ctxMenu = new TQPopupMenu(this);
connect(d->m_ctxMenu, TQT_SIGNAL(aboutToHide()), this, TQT_SLOT(ctxMenuHiding()));
}
return d->m_ctxMenu;
}
const TQPopupMenu* KPopupMenu::contextMenu() const
{
return const_cast< KPopupMenu* >( this )->contextMenu();
}
void KPopupMenu::hideContextMenu()
{
KPopupMenuPrivate::s_continueCtxMenuShow = false;
}
int KPopupMenu::contextMenuFocusItem()
{
return KPopupMenuPrivate::s_highlightedItem;
}
KPopupMenu* KPopupMenu::contextMenuFocus()
{
return KPopupMenuPrivate::s_contextedMenu;
}
void KPopupMenu::itemHighlighted(int /* whichItem */)
{
if (!d->m_ctxMenu || !d->m_ctxMenu->isVisible())
{
return;
}
d->m_ctxMenu->hide();
showCtxMenu(mapFromGlobal(TQCursor::pos()));
}
void KPopupMenu::showCtxMenu(TQPoint pos)
{
TQMenuItem* item = findItem(KPopupMenuPrivate::s_highlightedItem);
if (item)
{
TQPopupMenu* subMenu = item->popup();
if (subMenu)
{
disconnect(subMenu, TQT_SIGNAL(aboutToShow()), this, TQT_SLOT(ctxMenuHideShowingMenu()));
}
}
KPopupMenuPrivate::s_highlightedItem = idAt(pos);
if (KPopupMenuPrivate::s_highlightedItem == -1)
{
KPopupMenuPrivate::s_contextedMenu = 0;
return;
}
emit aboutToShowContextMenu(this, KPopupMenuPrivate::s_highlightedItem, d->m_ctxMenu);
TQPopupMenu* subMenu = findItem(KPopupMenuPrivate::s_highlightedItem)->popup();
if (subMenu)
{
connect(subMenu, TQT_SIGNAL(aboutToShow()), TQT_SLOT(ctxMenuHideShowingMenu()));
TQTimer::singleShot(100, subMenu, TQT_SLOT(hide()));
}
if (!KPopupMenuPrivate::s_continueCtxMenuShow)
{
KPopupMenuPrivate::s_continueCtxMenuShow = true;
return;
}
KPopupMenuPrivate::s_contextedMenu = this;
d->m_ctxMenu->popup(this->mapToGlobal(pos));
connect(this, TQT_SIGNAL(highlighted(int)), this, TQT_SLOT(itemHighlighted(int)));
}
/*
* this method helps prevent submenus popping up while we have a context menu
* showing
*/
void KPopupMenu::ctxMenuHideShowingMenu()
{
TQMenuItem* item = findItem(KPopupMenuPrivate::s_highlightedItem);
if (item)
{
TQPopupMenu* subMenu = item->popup();
if (subMenu)
{
TQTimer::singleShot(0, subMenu, TQT_SLOT(hide()));
}
}
}
void KPopupMenu::ctxMenuHiding()
{
if (KPopupMenuPrivate::s_highlightedItem)
{
TQPopupMenu* subMenu = findItem(KPopupMenuPrivate::s_highlightedItem)->popup();
if (subMenu)
{
disconnect(subMenu, TQT_SIGNAL(aboutToShow()), this, TQT_SLOT(ctxMenuHideShowingMenu()));
}
}
disconnect(this, TQT_SIGNAL(highlighted(int)), this, TQT_SLOT(itemHighlighted(int)));
KPopupMenuPrivate::s_continueCtxMenuShow = true;
}
void KPopupMenu::contextMenuEvent(TQContextMenuEvent* e)
{
if (d->m_ctxMenu)
{
if (e->reason() == TQContextMenuEvent::Mouse)
{
showCtxMenu(e->pos());
}
else if (actItem != -1)
{
showCtxMenu(itemGeometry(actItem).center());
}
e->accept();
return;
}
TQPopupMenu::contextMenuEvent(e);
}
void KPopupMenu::hideEvent(TQHideEvent*)
{
if (d->m_ctxMenu && d->m_ctxMenu->isVisible())
{
// we need to block signals here when the ctxMenu is showing
// to prevent the TQPopupMenu::activated(int) signal from emitting
// when hiding with a context menu, the user doesn't expect the
// menu to actually do anything.
// since hideEvent gets called very late in the process of hiding
// (deep within TQWidget::hide) the activated(int) signal is the
// last signal to be emitted, even after things like aboutToHide()
// AJS
blockSignals(true);
d->m_ctxMenu->hide();
blockSignals(false);
}
}
/**
* end of RMB menus on menus support
*/
// Obsolete
KPopupMenu::KPopupMenu(const TQString& title, TQWidget *parent, const char *name)
: TQPopupMenu(parent, name)
{
d = new KPopupMenuPrivate;
insertTitle(title);
}
// Obsolete
void KPopupMenu::setTitle(const TQString &title)
{
KPopupTitle *titleItem = new KPopupTitle();
titleItem->setTitle(title);
insertItem(titleItem);
d->m_lastTitle = title;
}
void KPopupTitle::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
void KPopupMenu::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
#include "kpopupmenu.moc"