/* * Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com> * Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Library General Public License as * published by the Free Software Foundation; either version 2, 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 Library 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 "windowpreview_p.h" #include <QPainter> #include <QVarLengthArray> #include <QMouseEvent> #include <kwindowsystem.h> #include <kdebug.h> #include <plasma/framesvg.h> #include <plasma/windoweffects.h> #ifdef Q_WS_X11 #include <QX11Info> #include <X11/Xlib.h> #include <fixx11h.h> #endif namespace Plasma { WindowPreview::WindowPreview(QWidget *parent) : QWidget(parent), m_highlightWindows(false) { m_background = new Plasma::FrameSvg(this); m_background->setImagePath("widgets/frame"); m_background->setElementPrefix("raised"); setMouseTracking(true); } void WindowPreview::setWindowIds(const QList<WId> wids) { if (!WindowEffects::isEffectAvailable(WindowEffects::WindowPreview)) { setMinimumSize(0,0); setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX); ids.clear(); return; } //FIXME: need to get rid of this 4 window maximum by using a smarter layout if (wids.count() < 5) { ids = wids; } else { ids = wids.mid(0, 4); } windowSizes = WindowEffects::windowSizes(ids); QSize s(sizeHint()); if (s.isValid()) { setFixedSize(sizeHint()); } } QList<WId> WindowPreview::windowIds() const { return ids; } QSize WindowPreview::sizeHint() const { if (ids.size() == 0) { return QSize(); } if (!windowSizes.size() == 0) { windowSizes = WindowEffects::windowSizes(ids); } int maxHeight = 0; int totalWidth = 0; foreach (const QSize &s, windowSizes) { if (s.height() > maxHeight) { maxHeight = s.height(); } totalWidth += s.width(); } QSize s(totalWidth, maxHeight); qreal left, top, right, bottom; m_background->getMargins(left, top, right, bottom); s.scale(WINDOW_WIDTH*windowSizes.size(), WINDOW_HEIGHT, Qt::KeepAspectRatio); s = s + QSize(left+right+WINDOW_MARGIN*(windowSizes.size()-1), top+bottom); return s; } bool WindowPreview::isEmpty() const { foreach (WId id, ids) { if (id != 0) { return false; } } return true; } void WindowPreview::setHighlightWindows(const bool highlight) { m_highlightWindows = highlight; } bool WindowPreview::highlightWindows() const { return m_highlightWindows; } void WindowPreview::setInfo() { if (isEmpty()) { WindowEffects::showWindowThumbnails(parentWidget()->winId()); return; } if (windowSizes.size() == 0) { windowSizes = WindowEffects::windowSizes(ids); } if (windowSizes.size() == 0) { WindowEffects::showWindowThumbnails(parentWidget()->winId()); return; } Q_ASSERT(parentWidget()->isWindow()); // parent must be toplevel QSize thumbnailSize = sizeHint(); thumbnailSize.scale(size(), Qt::KeepAspectRatio); m_background->resizeFrame(thumbnailSize); qreal left, top, right, bottom; m_background->getMargins(left, top, right, bottom); QRect thumbnailRect = geometry().adjusted(left, top, -right, -bottom); const int numWindows = ids.size(); m_thumbnailRects.clear(); int x = thumbnailRect.x(); foreach (QSize s, windowSizes) { s.scale((qreal)(thumbnailRect.width()-WINDOW_MARGIN*(numWindows-1))/numWindows, thumbnailRect.height(), Qt::KeepAspectRatio); int y = thumbnailRect.y() + (thumbnailRect.height() - s.height())/2; m_thumbnailRects.append(QRect(QPoint(x,y), s)); x += s.width() + WINDOW_MARGIN; } WindowEffects::showWindowThumbnails(parentWidget()->winId(), ids, m_thumbnailRects); } void WindowPreview::paintEvent(QPaintEvent *e) { Q_UNUSED(e) QPainter painter(this); qreal left, top, right, bottom; m_background->getMargins(left, top, right, bottom); foreach (const QRect &r, m_thumbnailRects) { //kWarning()<<r; m_background->resizeFrame(r.size()+QSize(left+right, top+bottom)); m_background->paintFrame(&painter, r.topLeft()-pos()-QPoint(left,top)); } } void WindowPreview::mousePressEvent(QMouseEvent *event) { QPoint p = event->pos(); WId wid = 0; for (int i = 0; i < m_thumbnailRects.size(); ++i) { if (m_thumbnailRects[i].contains(p)) { wid = ids[i]; break; } } if (wid) { emit windowPreviewClicked(wid, event->buttons(), event->modifiers(), event->globalPos()); } } void WindowPreview::mouseMoveEvent(QMouseEvent *event) { if (!m_highlightWindows) { return; } int i = 0; foreach (const QRect &rect, m_thumbnailRects) { if (rect.contains(event->pos())) { WindowEffects::highlightWindows(effectiveWinId(), QList<WId>()<<effectiveWinId()<<ids[i]); return; } ++i; } WindowEffects::highlightWindows(effectiveWinId(), QList<WId>()); } void WindowPreview::leaveEvent(QEvent *event) { Q_UNUSED(event) if (!m_highlightWindows) { return; } WindowEffects::highlightWindows(effectiveWinId(), QList<WId>()); } } // namespace Plasma #include "windowpreview_p.moc"