8fbb555bbd
-correctly resize the rooltip window when the winid to preview changes -experiment with a little border/shadow around the thumbnail svn path=/trunk/KDE/kdelibs/; revision=929211
164 lines
4.2 KiB
C++
164 lines
4.2 KiB
C++
/*
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* Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
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* Copyright (C) 2008 by Alexis Ménard <darktears31@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "windowpreview_p.h"
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#include <QPainter>
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#include <kwindowsystem.h>
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#include <kdebug.h>
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#include <plasma/framesvg.h>
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#ifdef Q_WS_X11
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#include <QX11Info>
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#include <X11/Xlib.h>
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#include <fixx11h.h>
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#endif
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namespace Plasma {
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bool WindowPreview::previewsAvailable() // static
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{
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if (!KWindowSystem::compositingActive()) {
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return false;
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}
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#ifdef Q_WS_X11
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// hackish way to find out if KWin has the effect enabled,
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// TODO provide proper support
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Display *dpy = QX11Info::display();
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Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
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int cnt;
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Atom *list = XListProperties(dpy, DefaultRootWindow(dpy), &cnt);
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if (list != NULL) {
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bool ret = (qFind(list, list + cnt, atom) != list + cnt);
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XFree(list);
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return ret;
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}
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#endif
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return false;
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}
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WindowPreview::WindowPreview(QWidget *parent)
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: QWidget(parent)
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{
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m_background = new Plasma::FrameSvg(this);
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m_background->setImagePath("widgets/frame");
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m_background->setElementPrefix("raised");
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}
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void WindowPreview::setWindowId(WId w)
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{
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if (!previewsAvailable()) {
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setMinimumSize(0,0);
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setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
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id = 0;
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return;
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}
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id = w;
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readWindowSize();
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QSize s(sizeHint());
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if (s.isValid()) {
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setFixedSize(sizeHint());
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}
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}
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WId WindowPreview::windowId() const
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{
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return id;
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}
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QSize WindowPreview::sizeHint() const
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{
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if (id == 0) {
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return QSize();
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}
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if (!windowSize.isValid()) {
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readWindowSize();
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}
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QSize s = windowSize;
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s.scale(200, 150, Qt::KeepAspectRatio);
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return s;
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}
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void WindowPreview::readWindowSize() const
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{
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#ifdef Q_WS_X11
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if (id > 0) {
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KWindowInfo info = KWindowSystem::windowInfo(id, NET::WMGeometry|NET::WMFrameExtents);
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windowSize = info.frameGeometry().size();
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} else {
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windowSize = QSize();
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}
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#else
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windowSize = QSize();
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#endif
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}
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void WindowPreview::setInfo()
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{
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#ifdef Q_WS_X11
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Display *dpy = QX11Info::display();
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Atom atom = XInternAtom(dpy, "_KDE_WINDOW_PREVIEW", False);
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if (id == 0) {
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XDeleteProperty(dpy, parentWidget()->winId(), atom);
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return;
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}
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if (!windowSize.isValid()) {
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readWindowSize();
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}
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if (!windowSize.isValid()) {
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XDeleteProperty(dpy, parentWidget()->winId(), atom);
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return;
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}
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Q_ASSERT(parentWidget()->isWindow()); // parent must be toplevel
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QSize thumbnailSize = sizeHint();
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thumbnailSize.scale(size(), Qt::KeepAspectRatio);
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m_background->resizeFrame(thumbnailSize);
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qreal left, top, right, bottom;
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m_background->getMargins(left, top, right, bottom);
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QRect thumbnailRect = geometry().adjusted(left, top, -right, -bottom);
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long data[] = { 1, 5, id, thumbnailRect.x(), thumbnailRect.y(), thumbnailRect.width(), thumbnailRect.height() };
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XChangeProperty(dpy, parentWidget()->winId(), atom, atom, 32, PropModeReplace,
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reinterpret_cast<unsigned char *>(data), sizeof(data) / sizeof(data[ 0 ]));
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#endif
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}
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void WindowPreview::paintEvent(QPaintEvent *e)
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{
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Q_UNUSED(e)
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#ifdef Q_WS_X11
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QPainter painter(this);
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QRect r(QPoint(0,0), m_background->frameSize().toSize());
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r.moveCenter(QPoint(size().width()/2, size().height()/2));
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m_background->paintFrame(&painter, r.topLeft());
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#endif
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}
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} // namespace Plasma
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#include "windowpreview_p.moc"
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