/************************************************************************* * Copyright (C) 2014 by Hugo Pereira Da Costa * * * * 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 "breezesizegrip.h" #include #include #include #include #if BREEZE_HAVE_X11 #include #endif namespace Breeze { //* scoped pointer convenience typedef template using ScopedPointer = QScopedPointer; //_____________________________________________ SizeGrip::SizeGrip( Decoration* decoration ):QWidget(nullptr) ,m_decoration( decoration ) { setAttribute(Qt::WA_NoSystemBackground ); setAutoFillBackground( false ); // cursor setCursor( Qt::SizeFDiagCursor ); // size setFixedSize( QSize( GripSize, GripSize ) ); // mask setMask( QRegion( QVector{ QPoint( 0, GripSize ), QPoint( GripSize, 0 ), QPoint( GripSize, GripSize ), QPoint( 0, GripSize )} ) ); // embed embed(); updatePosition(); // connections auto c = decoration->client().data(); connect( c, &KDecoration2::DecoratedClient::widthChanged, this, &SizeGrip::updatePosition ); connect( c, &KDecoration2::DecoratedClient::heightChanged, this, &SizeGrip::updatePosition ); connect( c, &KDecoration2::DecoratedClient::activeChanged, this, &SizeGrip::updateActiveState ); // show show(); } //_____________________________________________ SizeGrip::~SizeGrip() {} //_____________________________________________ void SizeGrip::updateActiveState() { #if BREEZE_HAVE_X11 if( QX11Info::isPlatformX11() ) { const quint32 value = XCB_STACK_MODE_ABOVE; xcb_configure_window( QX11Info::connection(), winId(), XCB_CONFIG_WINDOW_STACK_MODE, &value ); xcb_map_window( QX11Info::connection(), winId() ); } #endif update(); } //_____________________________________________ void SizeGrip::embed() { #if BREEZE_HAVE_X11 if( !QX11Info::isPlatformX11() ) return; auto c = m_decoration.data()->client().data(); xcb_window_t windowId = c->windowId(); if( windowId ) { /* find client's parent we want the size grip to be at the same level as the client in the stack */ xcb_window_t current = windowId; auto connection = QX11Info::connection(); xcb_query_tree_cookie_t cookie = xcb_query_tree_unchecked( connection, current ); ScopedPointer tree(xcb_query_tree_reply( connection, cookie, nullptr ) ); if( !tree.isNull() && tree->parent ) current = tree->parent; // reparent xcb_reparent_window( connection, winId(), current, 0, 0 ); setWindowTitle( "Breeze::SizeGrip" ); } else { hide(); } #endif } //_____________________________________________ void SizeGrip::paintEvent( QPaintEvent* ) { if( !m_decoration ) return; // get relevant colors const QColor backgroundColor( m_decoration.data()->titleBarColor() ); // create and configure painter QPainter painter(this); painter.setRenderHints(QPainter::Antialiasing ); painter.setPen( Qt::NoPen ); painter.setBrush( backgroundColor ); // polygon painter.drawPolygon( QVector { QPoint( 0, GripSize ), QPoint( GripSize, 0 ), QPoint( GripSize, GripSize ), QPoint( 0, GripSize )} ); } //_____________________________________________ void SizeGrip::mousePressEvent( QMouseEvent* event ) { switch (event->button()) { case Qt::RightButton: { hide(); QTimer::singleShot(5000, this, SLOT(show())); break; } case Qt::MidButton: { hide(); break; } case Qt::LeftButton: if( rect().contains( event->pos() ) ) { sendMoveResizeEvent( event->pos() ); } break; default: break; } } //_______________________________________________________________________________ void SizeGrip::updatePosition() { #if BREEZE_HAVE_X11 if( !QX11Info::isPlatformX11() ) return; auto c = m_decoration.data()->client().data(); QPoint position( c->width() - GripSize - Offset, c->height() - GripSize - Offset ); quint32 values[2] = { quint32(position.x()), quint32(position.y()) }; xcb_configure_window( QX11Info::connection(), winId(), XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values ); #endif } //_____________________________________________ void SizeGrip::sendMoveResizeEvent( QPoint position ) { #if BREEZE_HAVE_X11 if( !QX11Info::isPlatformX11() ) return; // pointer to connection auto connection( QX11Info::connection() ); // client auto c = m_decoration.data()->client().data(); /* get root position matching position need to use xcb because the embedding of the widget breaks QT's mapToGlobal and other methods */ QPoint rootPosition( position ); xcb_get_geometry_cookie_t cookie( xcb_get_geometry( connection, winId() ) ); ScopedPointer reply( xcb_get_geometry_reply( connection, cookie, nullptr ) ); if( reply ) { // translate coordinates xcb_translate_coordinates_cookie_t coordCookie( xcb_translate_coordinates( connection, winId(), reply.data()->root, -reply.data()->border_width, -reply.data()->border_width ) ); ScopedPointer< xcb_translate_coordinates_reply_t> coordReply( xcb_translate_coordinates_reply( connection, coordCookie, nullptr ) ); if( coordReply ) { rootPosition.rx() += coordReply.data()->dst_x; rootPosition.ry() += coordReply.data()->dst_y; } } // move/resize atom if( !m_moveResizeAtom ) { // create atom if not found const QString atomName( "_NET_WM_MOVERESIZE" ); xcb_intern_atom_cookie_t cookie( xcb_intern_atom( connection, false, atomName.size(), qPrintable( atomName ) ) ); ScopedPointer reply( xcb_intern_atom_reply( connection, cookie, nullptr ) ); m_moveResizeAtom = reply ? reply->atom:0; } if( !m_moveResizeAtom ) return; // button release event xcb_button_release_event_t releaseEvent; memset(&releaseEvent, 0, sizeof(releaseEvent)); releaseEvent.response_type = XCB_BUTTON_RELEASE; releaseEvent.event = winId(); releaseEvent.child = XCB_WINDOW_NONE; releaseEvent.root = QX11Info::appRootWindow(); releaseEvent.event_x = position.x(); releaseEvent.event_y = position.y(); releaseEvent.root_x = rootPosition.x(); releaseEvent.root_y = rootPosition.y(); releaseEvent.detail = XCB_BUTTON_INDEX_1; releaseEvent.state = XCB_BUTTON_MASK_1; releaseEvent.time = XCB_CURRENT_TIME; releaseEvent.same_screen = true; xcb_send_event( connection, false, winId(), XCB_EVENT_MASK_BUTTON_RELEASE, reinterpret_cast(&releaseEvent)); xcb_ungrab_pointer( connection, XCB_TIME_CURRENT_TIME ); // move resize event xcb_client_message_event_t clientMessageEvent; memset(&clientMessageEvent, 0, sizeof(clientMessageEvent)); clientMessageEvent.response_type = XCB_CLIENT_MESSAGE; clientMessageEvent.type = m_moveResizeAtom; clientMessageEvent.format = 32; clientMessageEvent.window = c->windowId(); clientMessageEvent.data.data32[0] = rootPosition.x(); clientMessageEvent.data.data32[1] = rootPosition.y(); clientMessageEvent.data.data32[2] = 4; // bottom right clientMessageEvent.data.data32[3] = Qt::LeftButton; clientMessageEvent.data.data32[4] = 0; xcb_send_event( connection, false, QX11Info::appRootWindow(), XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, reinterpret_cast(&clientMessageEvent) ); xcb_flush( connection ); #endif } }