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/*
* Cantata
*
* Copyright (c) 2011-2022 Craig Drummond <craig.p.drummond@gmail.com>
*
* ----
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "menubutton.h"
#include "icons.h"
#include "support/icon.h"
#include <QAction>
#include <QApplication>
#include <QEvent>
#include <QMenu>
#include <QProxyStyle>
#include <QScreen>
#ifdef Q_OS_WIN
#include <windows.h>
#include <VersionHelpers.h>
#ifndef _WIN32_WINNT_WIN10
#define _WIN32_WINNT_WIN10 0x0A00
#endif
#endif
MenuButton::MenuButton(QWidget* parent)
: ToolButton(parent)
{
setPopupMode(QToolButton::InstantPopup);
setIcon(Icons::self()->menuIcon);
setToolTip(tr("Menu"));
installEventFilter(this);
}
void MenuButton::controlState()
{
if (!menu()) {
return;
}
for (QAction* a : menu()->actions()) {
if (a->isEnabled() && a->isVisible() && !a->isSeparator()) {
setEnabled(true);
return;
}
}
setEnabled(false);
}
void MenuButton::setAlignedMenu(QMenu* m)
{
QToolButton::setMenu(m);
#ifdef Q_OS_WIN
if (!IsWindowsVersionOrGreater(HIBYTE(_WIN32_WINNT_WIN10), LOBYTE(_WIN32_WINNT_WIN10), 0)) {
return;
}
#endif
m->installEventFilter(this);
}
void MenuButton::addSeparator()
{
QAction* sep = new QAction(this);
sep->setSeparator(true);
addAction(sep);
}
bool MenuButton::eventFilter(QObject* o, QEvent* e)
{
if (QEvent::Show == e->type()) {
if (qobject_cast<QMenu*>(o)) {
static int shadowAdjust = -1;
if (-1 == shadowAdjust) {
// Kvantum style adds its own shadows, which makes the menu appear in the wrong place.
// However, Kvatum sill set a property on the style object to indicate the size of
// the shadows. Use this to adjust positioning.
QProxyStyle* proxy = qobject_cast<QProxyStyle*>(style());
QStyle* check = proxy && proxy->baseStyle() ? proxy->baseStyle() : style();
QList<int> shadows = check ? check->property("menu_shadow").value<QList<int>>() : QList<int>();
shadowAdjust = 4 == shadows.length() ? shadows.at(2) : 0;
if (shadowAdjust < 0 || shadowAdjust > 18) {
shadowAdjust = 0;
}
}
QMenu* mnu = static_cast<QMenu*>(o);
QPoint p = parentWidget()->mapToGlobal(pos());
int newPos = isRightToLeft()
? p.x()
: ((p.x() + width() + shadowAdjust) - mnu->width());
if (newPos < 0) {
newPos = 0;
}
else {
QScreen* sc = QGuiApplication::primaryScreen();
if (sc) {
QRect geo = sc->availableGeometry();
int maxWidth = geo.x() + geo.width();
if (maxWidth > 0 && (newPos + mnu->width()) > maxWidth) {
newPos = maxWidth - mnu->width();
}
}
}
mnu->move(newPos, mnu->y());
}
else if (o == this) {
setMinimumWidth(height());
removeEventFilter(this);
}
}
return ToolButton::eventFilter(o, e);
}
#include "moc_menubutton.cpp"
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