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koffice/chalk/plugins/viewplugins/screenshot/ksnapshot.cpp

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14 KiB

/*
* KSnapshot
*
* (c) Richard J. Moore 1997-2002
* (c) Matthias Ettrich 2000
* (c) Aaron J. Seigo 2002
* (c) Nadeem Hasan 2003
* This adaptation: (c) Boudewijn Rempt 2005
*
* Released under the GPL see file LICENSE for details.
*/
#include <kapplication.h>
#include <klocale.h>
#include <kimageio.h>
#include <kfiledialog.h>
#include <kimagefilepreview.h>
#include <kmessagebox.h>
#include <kdebug.h>
#include <kprinter.h>
#include <kio/netaccess.h>
#include <ksavefile.h>
#include <ktempfile.h>
#include <tqbitmap.h>
#include <tqdragobject.h>
#include <tqimage.h>
#include <tqclipboard.h>
#include <tqvbox.h>
#include <kaccel.h>
#include <knotifyclient.h>
#include <khelpmenu.h>
#include <kpopupmenu.h>
#include <kpushbutton.h>
#include <kstartupinfo.h>
#include <tqcursor.h>
#include <tqregexp.h>
#include <tqpainter.h>
#include <tqpaintdevicemetrics.h>
#include <tqwhatsthis.h>
#include <stdlib.h>
#include "ksnapshot.h"
#include "regiongrabber.h"
#include "ksnapshotwidget.h"
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <config.h>
#ifdef HAVE_X11_EXTENSIONS_SHAPE_H
#include <X11/extensions/shape.h>
#endif
#include <kglobal.h>
KSnapshot::KSnapshot(TQWidget *parent, const char *name)
: super(parent, name, false, TQString(), Ok|Cancel)
{
grabber = new TQWidget( 0, 0, WStyle_Customize | WX11BypassWM );
TQ_CHECK_PTR(grabber);
grabber->move( -1000, -1000 );
grabber->installEventFilter( this );
#ifdef HAVE_X11_EXTENSIONS_SHAPE_H
int tmp1, tmp2;
//Check whether the extension is available
haveXShape = XShapeQueryExtension( tqt_xdisplay(), &tmp1, &tmp2 );
#endif
TQVBox *vbox = makeVBoxMainWidget();
mainWidget = new KSnapshotWidget( vbox, "mainWidget" );
TQ_CHECK_PTR(mainWidget);
mainWidget->btnSave->hide();
mainWidget->btnPrint->hide();
connect(mainWidget, TQT_SIGNAL(startImageDrag()), TQT_SLOT(slotDragSnapshot()));
connect( mainWidget, TQT_SIGNAL( newClicked() ), TQT_SLOT( slotGrab() ) );
connect( mainWidget, TQT_SIGNAL( printClicked() ), TQT_SLOT( slotPrint() ) );
grabber->show();
grabber->grabMouse( waitCursor );
snapshot = TQPixmap::grabWindow( tqt_xrootwin() );
updatePreview();
grabber->releaseMouse();
grabber->hide();
KConfig *conf=KGlobal::config();
conf->setGroup("GENERAL");
mainWidget->setDelay(conf->readNumEntry("delay",0));
mainWidget->setMode( conf->readNumEntry( "mode", 0 ) );
mainWidget->setIncludeDecorations(conf->readBoolEntry("includeDecorations",true));
connect( &grabTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( grabTimerDone() ) );
KAccel* accel = new KAccel(this);
TQ_CHECK_PTR(accel);
accel->insert(KStdAccel::Print, TQT_TQOBJECT(this), TQT_SLOT(slotPrint()));
accel->insert(KStdAccel::New, TQT_TQOBJECT(this), TQT_SLOT(slotGrab()));
accel->insert( "Print2", TQt::Key_P, TQT_TQOBJECT(this), TQT_SLOT(slotPrint()));
accel->insert( "New2", TQt::Key_N, TQT_TQOBJECT(this), TQT_SLOT(slotGrab()));
accel->insert( "New3", TQt::Key_Space, TQT_TQOBJECT(this), TQT_SLOT(slotGrab()));
mainWidget->btnNew->setFocus();
}
KSnapshot::~KSnapshot()
{
}
bool KSnapshot::save( const TQString &filename )
{
return save( KURL::fromPathOrURL( filename ));
}
bool KSnapshot::save( const KURL& url )
{
TQString type( KImageIO::type(url.path()) );
if ( type.isNull() )
type = "PNG";
bool ok = false;
if ( url.isLocalFile() ) {
KSaveFile saveFile( url.path() );
if ( saveFile.status() == 0 ) {
if ( snapshot.save( saveFile.file(), type.latin1() ) )
ok = saveFile.close();
}
}
else {
KTempFile tmpFile;
tmpFile.setAutoDelete( true );
if ( tmpFile.status() == 0 ) {
if ( snapshot.save( tmpFile.file(), type.latin1() ) ) {
if ( tmpFile.close() )
ok = KIO::NetAccess::upload( tmpFile.name(), url, this );
}
}
}
TQApplication::restoreOverrideCursor();
if ( !ok ) {
kdWarning() << "KSnapshot was unable to save the snapshot" << endl;
TQString caption = i18n("Unable to Save Image");
TQString text = i18n("KSnapshot was unable to save the image to\n%1.")
.arg(url.prettyURL());
KMessageBox::error(this, text, caption);
}
return ok;
}
void KSnapshot::slotCopy()
{
TQClipboard *cb = TQApplication::clipboard();
cb->setPixmap( snapshot );
}
void KSnapshot::slotDragSnapshot()
{
TQDragObject *drobj = new TQImageDrag(snapshot.convertToImage(), this);
TQ_CHECK_PTR(drobj);
drobj->setPixmap(mainWidget->preview());
drobj->dragCopy();
}
void KSnapshot::slotGrab()
{
hide();
if ( mainWidget->mode() == Region )
{
rgnGrab = new RegionGrabber();
TQ_CHECK_PTR(rgnGrab);
connect( rgnGrab, TQT_SIGNAL( regionGrabbed( const TQPixmap & ) ),
TQT_SLOT( slotRegionGrabbed( const TQPixmap & ) ) );
}
else
{
if ( mainWidget->delay() )
grabTimer.start( mainWidget->delay() * 1000, true );
else {
grabber->show();
grabber->grabMouse( crossCursor );
}
}
}
void KSnapshot::slotPrint()
{
KPrinter printer;
if (snapshot.width() > snapshot.height())
printer.setOrientation(KPrinter::Landscape);
else
printer.setOrientation(KPrinter::Portrait);
tqApp->processEvents();
if (printer.setup(this, i18n("Print Screenshot")))
{
tqApp->processEvents();
TQPainter painter(&printer);
TQPaintDeviceMetrics metrics(painter.device());
float w = snapshot.width();
float dw = w - metrics.width();
float h = snapshot.height();
float dh = h - metrics.height();
bool scale = false;
if ( (dw > 0.0) || (dh > 0.0) )
scale = true;
if ( scale ) {
TQImage img = snapshot.convertToImage();
tqApp->processEvents();
float newh, neww;
if ( dw > dh ) {
neww = w-dw;
newh = neww/w*h;
}
else {
newh = h-dh;
neww = newh/h*w;
}
img = img.smoothScale( int(neww), int(newh), TQ_ScaleMin );
tqApp->processEvents();
int x = (metrics.width()-img.width())/2;
int y = (metrics.height()-img.height())/2;
painter.drawImage( x, y, img);
}
else {
int x = (metrics.width()-snapshot.width())/2;
int y = (metrics.height()-snapshot.height())/2;
painter.drawPixmap( x, y, snapshot );
}
}
tqApp->processEvents();
}
void KSnapshot::slotRegionGrabbed( const TQPixmap &pix )
{
if ( !pix.isNull() )
{
snapshot = pix;
updatePreview();
modified = true;
}
delete rgnGrab;
TQApplication::restoreOverrideCursor();
show();
}
bool KSnapshot::eventFilter( TQObject* o, TQEvent* e)
{
if ( TQT_BASE_OBJECT(o) == TQT_BASE_OBJECT(grabber) && e->type() == TQEvent::MouseButtonPress ) {
TQMouseEvent* me = (TQMouseEvent*) e;
if ( TQWidget::mouseGrabber() != grabber )
return false;
if ( me->button() == Qt::LeftButton )
performGrab();
}
return false;
}
void KSnapshot::updatePreview()
{
TQImage img = snapshot.convertToImage();
double r1 = ((double) snapshot.height() ) / snapshot.width();
if ( r1 * mainWidget->previewWidth() < mainWidget->previewHeight() )
img = img.smoothScale( mainWidget->previewWidth(),
int( mainWidget->previewWidth() * r1 ));
else
img = img.smoothScale( (int) (((double)mainWidget->previewHeight()) / r1),
(mainWidget->previewHeight() ) );
TQPixmap pm;
pm.convertFromImage( img );
mainWidget->setPreview( pm );
}
void KSnapshot::grabTimerDone()
{
performGrab();
KNotifyClient::beep(i18n("The screen has been successfully grabbed."));
}
static
Window findRealWindow( Window w, int depth = 0 )
{
if( depth > 5 )
return None;
static Atom wm_state = XInternAtom( tqt_xdisplay(), "WM_STATE", False );
Atom type;
int format;
unsigned long nitems, after;
unsigned char* prop;
if( XGetWindowProperty( tqt_xdisplay(), w, wm_state, 0, 0, False, AnyPropertyType,
&type, &format, &nitems, &after, &prop ) == Success ) {
if( prop != NULL )
XFree( prop );
if( type != None )
return w;
}
Window root, parent;
Window* children;
unsigned int nchildren;
Window ret = None;
if( XQueryTree( tqt_xdisplay(), w, &root, &parent, &children, &nchildren ) != 0 ) {
for( unsigned int i = 0;
i < nchildren && ret == None;
++i )
ret = findRealWindow( children[ i ], depth + 1 );
if( children != NULL )
XFree( children );
}
return ret;
}
void KSnapshot::performGrab()
{
grabber->releaseMouse();
grabber->hide();
grabTimer.stop();
XGrabServer( tqt_xdisplay());
if ( mainWidget->mode() == WindowUnderCursor ) {
Window root;
Window child;
uint mask;
int rootX, rootY, winX, winY;
XQueryPointer( tqt_xdisplay(), tqt_xrootwin(), &root, &child,
&rootX, &rootY, &winX, &winY,
&mask);
if( child == None )
child = tqt_xrootwin();
if( !mainWidget->includeDecorations()) {
Window real_child = findRealWindow( child );
if( real_child != None ) // test just in case
child = real_child;
}
int x, y;
unsigned int w, h;
unsigned int border;
unsigned int depth;
XGetGeometry( tqt_xdisplay(), child, &root, &x, &y,
&w, &h, &border, &depth );
w += 2 * border;
h += 2 * border;
Window parent;
Window* children;
unsigned int nchildren;
if( XQueryTree( tqt_xdisplay(), child, &root, &parent,
&children, &nchildren ) != 0 ) {
if( children != NULL )
XFree( children );
int newx, newy;
Window dummy;
if( XTranslateCoordinates( tqt_xdisplay(), parent, tqt_xrootwin(),
x, y, &newx, &newy, &dummy )) {
x = newx;
y = newy;
}
}
snapshot = TQPixmap::grabWindow( tqt_xrootwin(), x, y, w, h );
#ifdef HAVE_X11_EXTENSIONS_SHAPE_H
//No XShape - no work.
if (haveXShape) {
TQBitmap mask(w, h);
//As the first step, get the mask from XShape.
int count, order;
XRectangle* rects = XShapeGetRectangles( tqt_xdisplay(), child,
ShapeBounding, &count, &order);
//The ShapeBounding region is the outermost shape of the window;
//ShapeBounding - ShapeClipping is defined to be the border.
//Since the border area is part of the window, we use bounding
// to limit our work region
if (rects) {
//Create a TQRegion from the rectangles describing the bounding mask.
TQRegion contents;
for (int pos = 0; pos < count; pos++)
contents += TQRegion(rects[pos].x, rects[pos].y,
rects[pos].width, rects[pos].height);
XFree(rects);
//Create the bounding box.
TQRegion bbox(0, 0, snapshot.width(), snapshot.height());
if( border > 0 ) {
contents.translate( border, border );
contents += TQRegion( 0, 0, border, h );
contents += TQRegion( 0, 0, w, border );
contents += TQRegion( 0, h - border, w, border );
contents += TQRegion( w - border, 0, border, h );
}
//Get the masked away area.
TQRegion maskedAway = bbox - contents;
TQMemArray<TQRect> maskedAwayRects = maskedAway.rects();
//Construct a bitmap mask from the rectangles
TQPainter p(&mask);
p.fillRect(0, 0, w, h, TQt::color1);
for (uint pos = 0; pos < maskedAwayRects.count(); pos++)
p.fillRect(maskedAwayRects[pos], TQt::color0);
p.end();
snapshot.setMask(mask);
}
}
#endif
}
else {
snapshot = TQPixmap::grabWindow( tqt_xrootwin() );
}
XUngrabServer( tqt_xdisplay());
updatePreview();
TQApplication::restoreOverrideCursor();
modified = true;
// show();
slotOk();
}
void KSnapshot::setTime(int newTime)
{
mainWidget->setDelay(newTime);
}
void KSnapshot::setURL( const TQString &url )
{
KURL newURL = KURL::fromPathOrURL( url );
if ( newURL == filename )
return;
filename = newURL;
}
void KSnapshot::setGrabMode( int m )
{
mainWidget->setMode( m );
}
void KSnapshot::slotMovePointer(int x, int y)
{
TQCursor::setPos( x, y );
}
void KSnapshot::exit()
{
KConfig *conf=KGlobal::config();
conf->setGroup("GENERAL");
conf->writeEntry("delay",mainWidget->delay());
conf->writeEntry("mode",mainWidget->mode());
conf->writeEntry("includeDecorations",mainWidget->includeDecorations());
KURL url = filename;
url.setPass( TQString() );
conf->writePathEntry("filename",url.url());
reject();
}
void KSnapshot::slotOk()
{
KConfig *conf=KGlobal::config();
conf->setGroup("GENERAL");
conf->writeEntry("delay",mainWidget->delay());
conf->writeEntry("mode",mainWidget->mode());
conf->writeEntry("includeDecorations",mainWidget->includeDecorations());
KURL url = filename;
url.setPass( TQString() );
conf->writePathEntry("filename",url.url());
emit screenGrabbed();
accept();
}
#include "ksnapshot.moc"