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/***************************************************************************
* x11embedcontainer.cpp *
* *
* Copyright (C) 2008 Jason Stubbs <jasonbstubbs@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; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "x11embedcontainer.h"
#include "x11embedpainter.h"
#include "fdoselectionmanager.h"
#include <debug_p.h>
// KDE
// UQ #include <KDebug>
// Qt
#include <QtGui/QPainter>
#include <QtGui/QPaintEngine>
#include <QtGui/QX11Info>
// Xlib
// UQ #include <config-X11.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xrender.h>
#include <X11/extensions/Xcomposite.h>
namespace SystemTray
{
class X11EmbedContainer::Private
{
public:
Private(X11EmbedContainer *q)
: q(q),
picture(None),
updatesEnabled(true)
{
}
~Private()
{
if (picture) {
XRenderFreePicture(QX11Info::display(), picture);
}
}
X11EmbedContainer *q;
XWindowAttributes attr;
Picture picture;
bool updatesEnabled;
QImage oldBackgroundImage;
};
X11EmbedContainer::X11EmbedContainer(QWidget *parent)
: QX11EmbedContainer(parent),
d(new Private(this))
{
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_PaintUnclipped);
connect(this, SIGNAL(clientIsEmbedded()),
this, SLOT(ensureValidSize()));
}
X11EmbedContainer::~X11EmbedContainer()
{
FdoSelectionManager::manager()->removeDamageWatch(this);
delete d;
}
void X11EmbedContainer::embedSystemTrayClient(WId clientId)
{
Display *display = QX11Info::display();
if (!XGetWindowAttributes(display, clientId, &d->attr)) {
error(QX11EmbedContainer::Unknown);
return;
}
XSetWindowAttributes sAttr;
sAttr.background_pixel = BlackPixel(display, DefaultScreen(display));
sAttr.border_pixel = BlackPixel(display, DefaultScreen(display));
sAttr.colormap = d->attr.colormap;
WId parentId = parentWidget() ? parentWidget()->winId() : DefaultRootWindow(display);
Window winId = XCreateWindow(display, parentId, 0, 0, d->attr.width, d->attr.height,
0, d->attr.depth, InputOutput, d->attr.visual,
CWBackPixel | CWBorderPixel | CWColormap, &sAttr);
XWindowAttributes attr;
if (!XGetWindowAttributes(display, winId, &attr)) {
error(QX11EmbedContainer::Unknown);
return;
}
create(winId);
XRenderPictFormat *format = XRenderFindVisualFormat(display, d->attr.visual);
if (format && format->type == PictTypeDirect && format->direct.alphaMask &&
FdoSelectionManager::manager()->haveComposite())
{
// Redirect ARGB windows to offscreen storage so we can composite them ourselves
XRenderPictureAttributes attr;
attr.subwindow_mode = IncludeInferiors;
d->picture = XRenderCreatePicture(display, clientId, format, CPSubwindowMode, &attr);
XCompositeRedirectSubwindows(display, winId, CompositeRedirectManual);
FdoSelectionManager::manager()->addDamageWatch(this, clientId);
//kDebug() << "Embedded client uses an ARGB visual -> compositing.";
} else {
//kDebug() << "Embedded client is not using an ARGB visual.";
}
// repeat everything from QX11EmbedContainer's ctor that might be relevant
setFocusPolicy(Qt::StrongFocus);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setAcceptDrops(true);
setEnabled(false);
XSelectInput(display, winId,
KeyPressMask | KeyReleaseMask |
ButtonPressMask | ButtonReleaseMask | ButtonMotionMask |
KeymapStateMask |
PointerMotionMask |
EnterWindowMask | LeaveWindowMask |
FocusChangeMask |
ExposureMask |
StructureNotifyMask |
SubstructureNotifyMask);
XFlush(display);
embedClient(clientId);
// FIXME: This checks that the client is still valid. Qt won't pick it up
// if the client closes before embedding completes. However, what happens
// if the close happens after this point? Should checks happen on a timer
// until embedding completes perhaps?
if (!XGetWindowAttributes(QX11Info::display(), clientId, &d->attr)) {
error(QX11EmbedContainer::Unknown);
return;
}
}
void X11EmbedContainer::ensureValidSize()
{
QSize s = QSize(qBound(minimumSize().width(), width(), maximumSize().width()),
qBound(minimumSize().height(), height(), maximumSize().height()));
resize(s);
}
void X11EmbedContainer::setUpdatesEnabled(bool enabled)
{
d->updatesEnabled = enabled;
}
void X11EmbedContainer::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
if (!d->updatesEnabled) {
return;
}
if (!d->picture) {
FdoSelectionManager::painter()->updateContainer(this);
return;
}
QPainter p(this);
// Paint the background
// Translate the painter to ensure the background brush is aligned with the
// rest of the panel
p.translate(-x(), -y());
p.eraseRect(0, 0, x() + width(), y() + height());
p.translate(x(), y());
// Taking a detour via a QPixmap is unfortunately the only way we can get
// the window contents into Qt's backing store.
QPixmap pixmap(size());
if (pixmap.paintEngine()->type() != QPaintEngine::X11) {
// If we're using the raster or OpenGL graphics systems, a QPixmap isn't an X pixmap,
// so we have to get the window contents into a QImage and then draw that.
Display *dpy = x11Info().display();
// XXX We really should keep a cached copy of the image client side, and only
// update it in response to a damage event.
Pixmap pixmap = XCompositeNameWindowPixmap(dpy, clientWinId());
// Extract XImage from pixmap, trying to cope with different behaviors.
// There are two possible sizes:
// #1: width() x height(), which is 24 x 24 in our situation
// #2: d->attr.width x d->attr.height
//
// - Mumble 1.2.3 returns a correct image when asked for an image of
// size #1 , but returns a 22 x 22 cropped icon when asked for an image
// of size #2.
//
// - Pidgin 2.7.9 returns a NULL image when asked for an image of size
// #1 but returns a correct 16 x 16 image when asked for an image of
// size #2.
XImage *ximage = XGetImage(dpy, pixmap, 0, 0, width(), height(), AllPlanes, ZPixmap);
if (!ximage) {
int ximageWidth = qMin(d->attr.width, width());
int ximageHeight = qMin(d->attr.height, height());
ximage = XGetImage(dpy, pixmap, 0, 0, ximageWidth, ximageHeight, AllPlanes, ZPixmap);
}
XFreePixmap(dpy, pixmap);
if (!ximage) {
UQ_WARNING << "Failed to get an XImage from X11 window with XID=" << clientWinId();
return;
}
// This is safe to do since we only composite ARGB32 windows, and PictStandardARGB32
// matches QImage::Format_ARGB32_Premultiplied.
QImage image((const uchar*)ximage->data, ximage->width, ximage->height, ximage->bytes_per_line,
QImage::Format_ARGB32_Premultiplied);
p.drawImage((width() - image.width()) / 2, (height() - image.height()) / 2, image);
XDestroyImage(ximage);
} else {
pixmap.fill(Qt::transparent);
XRenderComposite(x11Info().display(), PictOpSrc, d->picture, None, pixmap.x11PictureHandle(),
0, 0, 0, 0, 0, 0, width(), height());
p.drawPixmap(0, 0, pixmap);
}
}
void X11EmbedContainer::setBackgroundPixmap(QPixmap background)
{
if (!clientWinId()) {
return;
}
Display *display = QX11Info::display();
Pixmap bg = XCreatePixmap(display, clientWinId(), width(), height(), d->attr.depth);
XRenderPictFormat *format = XRenderFindVisualFormat(display, d->attr.visual);
Picture picture = XRenderCreatePicture(display, bg, format, 0, 0);
//Prevent updating the background-image if possible. Updating can cause a very annoying flicker due to the XClearArea, and thus has to be kept to a minimum
QImage image;
if (background.paintEngine()->type() != QPaintEngine::X11)
image = background.toImage(); // With the raster graphics system this call just returns the backing image, so the image data isn't copied.
else
image = background.copy().toImage(); //With the X11 graphics engine, we have to create a copy first, else we get a crash
if(d->oldBackgroundImage == image) {
XFreePixmap(display, bg);
XRenderFreePicture(display, picture);
return;
}
d->oldBackgroundImage = image;
if (background.paintEngine()->type() != QPaintEngine::X11) {
XRenderPictFormat *format = 0;
int depth = 0;
int bpp = 0;
if (image.format() == QImage::Format_ARGB32_Premultiplied) {
format = XRenderFindStandardFormat(display, PictStandardARGB32);
depth = 32;
bpp = 32;
} else if (image.format() == QImage::Format_RGB32) {
format = XRenderFindStandardFormat(display, PictStandardRGB24);
depth = 24;
bpp = 32;
} else if (image.format() == QImage::Format_RGB16) {
bpp = 16;
depth = 16;
// Try to find a picture format that matches the image format.
// The Render spec doesn't require the X server to support 16bpp formats,
// so this call can fail.
XRenderPictFormat templ;
templ.type = PictTypeDirect;
templ.direct.alpha = 0;
templ.direct.alphaMask = 0;
templ.depth = 16;
templ.direct.red = 11;
templ.direct.redMask = 0x1f;
templ.direct.green = 5;
templ.direct.greenMask = 0x3f;
templ.direct.blue = 0;
templ.direct.blueMask = 0x1f;
format = XRenderFindFormat(display, PictFormatType | PictFormatDepth | PictFormatAlpha |
PictFormatAlphaMask | PictFormatRed | PictFormatRedMask |
PictFormatGreen | PictFormatGreenMask | PictFormatBlue |
PictFormatBlueMask, &templ, 0);
}
if (format == 0)
{
// Convert the image to a standard format.
if (image.hasAlphaChannel()) {
image = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
format = XRenderFindStandardFormat(display, PictStandardARGB32);
depth = 32;
} else {
image = image.convertToFormat(QImage::Format_RGB32);
format = XRenderFindStandardFormat(display, PictStandardRGB24);
depth = 24;
}
bpp = 32;
}
if (image.format() == QImage::Format_RGB32) {
// Make sure the would be alpha bits are set to 1.
quint32 * const pixels = (quint32*)(const_cast<const QImage*>(&image)->bits());
for (int i = 0; i < image.width() * image.height(); i++) {
pixels[i] |= 0xff000000;
}
}
Q_ASSERT(format != 0);
// Get the image data into a pixmap
XImage ximage;
ximage.width = image.width();
ximage.height = image.height();
ximage.xoffset = 0;
ximage.format = ZPixmap;
// This is a hack to prevent the image data from detaching
ximage.data = (char*) const_cast<const QImage*>(&image)->bits();
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
ximage.byte_order = MSBFirst;
#else
ximage.byte_order = LSBFirst;
#endif
ximage.bitmap_unit = bpp;
ximage.bitmap_bit_order = ximage.byte_order;
ximage.bitmap_pad = bpp;
ximage.depth = depth;
ximage.bytes_per_line = image.bytesPerLine();
ximage.bits_per_pixel = bpp;
if (depth > 16) {
ximage.red_mask = 0x00ff0000;
ximage.green_mask = 0x0000ff00;
ximage.blue_mask = 0x000000ff;
} else {
// r5g6b5
ximage.red_mask = 0xf800;
ximage.green_mask = 0x07e0;
ximage.blue_mask = 0x001f;
}
ximage.obdata = 0;
if (XInitImage(&ximage) == 0) {
XRenderFreePicture(display, picture);
XFreePixmap(display, bg);
return;
}
Pixmap pm = XCreatePixmap(display, clientWinId(), width(), height(), ximage.depth);
GC gc = XCreateGC(display, pm, 0, 0);
XPutImage(display, pm, gc, &ximage, 0, 0, 0, 0, width(), height());
XFreeGC(display, gc);
Picture pict = XRenderCreatePicture(display, pm, format, 0, 0);
XRenderComposite(display, PictOpSrc, pict, None, picture,
0, 0, 0, 0, 0, 0, width(), height());
XRenderFreePicture(display, pict);
XFreePixmap(display, pm);
} else {
XRenderComposite(display, PictOpSrc, background.x11PictureHandle(),
None, picture, 0, 0, 0, 0, 0, 0, width(), height());
}
XSetWindowBackgroundPixmap(display, clientWinId(), bg);
XRenderFreePicture(display, picture);
XFreePixmap(display, bg);
XClearArea(display, clientWinId(), 0, 0, 0, 0, True);
}
}
#include "x11embedcontainer.moc"
|