qdnd_x11.rar_drop

#include "qplatformdefs.h" #include "qapplication.h" #ifndef QT_NO_DRAGANDDROP #include "qwidget.h" #include "qpainter.h" #include "qpixmap.h" #include "qbitmap.h" #include "qdesktopwidget.h" #include "qevent.h" #include "qiodevice.h" #include "qpointer.h" #include "qcursor.h" #include "qelapsedtimer.h" #include "qvariant.h" #include "qvector.h" #include "qurl.h" #include "qdebug.h" #include "qimagewriter.h" #include "qbuffer.h" #include "qtextcodec.h" #include "qdnd_p.h" #include "qapplication_p.h" #include "qt_x11_p.h" #include "qx11info_x11.h" #include "qwidget_p.h" #include "qcursor_p.h" QT_BEGIN_NAMESPACE // #define DND_DEBUG #ifdef DND_DEBUG #define DEBUG qDebug #else #define DEBUG if(0) qDebug #endif #ifdef DND_DEBUG #define DNDDEBUG qDebug() #else #define DNDDEBUG if(0) qDebug() #endif static int findXdndDropTransactionByWindow(Window window) { int at = -1; for (int i = 0; i < X11->dndDropTransactions.count(); ++i) { const QXdndDropTransaction &t = X11->dndDropTransactions.at(i); if (t.target == window || t.proxy_target == window) { at = i; break; } } return at; } static int findXdndDropTransactionByTime(Time timestamp) { int at = -1; for (int i = 0; i < X11->dndDropTransactions.count(); ++i) { const QXdndDropTransaction &t = X11->dndDropTransactions.at(i); if (t.timestamp == timestamp) { at = i; break; } } return at; } // timer used to discard old XdndDrop transactions static int transaction_expiry_timer = -1; enum { XdndDropTransactionTimeout = 5000 }; // 5 seconds static void restartXdndDropExpiryTimer() { if (transaction_expiry_timer != -1) QDragManager::self()->killTimer(transaction_expiry_timer); transaction_expiry_timer = QDragManager::self()->startTimer(XdndDropTransactionTimeout); } // find an ancestor with XdndAware on it static Window findXdndAwareParent(Window window) { Window target = 0; forever { // check if window has XdndAware Atom type = 0; int f; unsigned long n, a; unsigned char *data = 0; if (XGetWindowProperty(X11->display, window, ATOM(XdndAware), 0, 0, False, AnyPropertyType, &type, &f,&n,&a,&data) == Success) { if (data) XFree(data); if (type) { target = window; break; } } // try window's parent Window root; Window parent; Window *children; uint unused; if (!XQueryTree(X11->display, window, &root, &parent, &children, &unused)) break; if (children) XFree(children); if (window == root) break; window = parent; } return target; } // and all this stuff is copied -into- qapp_x11.cpp static void handle_xdnd_position(QWidget *, const XEvent *, bool); static void handle_xdnd_status(QWidget * w, const XEvent * xe, bool /*passive*/); const int xdnd_version = 5; static Qt::DropAction xdndaction_to_qtaction(Atom atom) { if (atom == ATOM(XdndActionCopy) || atom == 0) return Qt::CopyAction; if (atom == ATOM(XdndActionLink)) return Qt::LinkAction; if (atom == ATOM(XdndActionMove)) return Qt::MoveAction; return Qt::CopyAction; } static int qtaction_to_xdndaction(Qt::DropAction a) { switch (a) { case Qt::CopyAction: return ATOM(XdndActionCopy); case Qt::LinkAction: return ATOM(XdndActionLink); case Qt::MoveAction: case Qt::TargetMoveAction: return ATOM(XdndActionMove); case Qt::IgnoreAction: return XNone; default: return ATOM(XdndActionCopy); } } // clean up the stuff used. static void qt_xdnd_cleanup(); static void qt_xdnd_send_leave(); // real variables: // xid of current drag source static Atom qt_xdnd_dragsource_xid = 0; // the types in this drop. 100 is no good, but at least it's big. const int qt_xdnd_max_type = 100; static Atom qt_xdnd_types[qt_xdnd_max_type + 1]; // timer used when target wants "continuous" move messages (eg. scroll) static int heartbeat = -1; // rectangle in which the answer will be the same static QRect qt_xdnd_source_sameanswer; // top-level window we sent position to last. static Window qt_xdnd_current_target; // window to send events to (always valid if qt_xdnd_current_target) static Window qt_xdnd_current_proxy_target; static Time qt_xdnd_source_current_time; // widget we forwarded position to last, and local position static QPointer<QWidget> qt_xdnd_current_widget; static QPoint qt_xdnd_current_position; // timestamp from the XdndPosition and XdndDrop static Time qt_xdnd_target_current_time; // screen number containing the pointer... -1 means default static int qt_xdnd_current_screen = -1; // state of dragging... true if dragging, false if not bool qt_xdnd_dragging = false; static bool waiting_for_status = false; // used to preset each new QDragMoveEvent static Qt::DropAction last_target_accepted_action = Qt::IgnoreAction; // Shift/Ctrl handling, and final drop status static Qt::DropAction global_accepted_action = Qt::CopyAction; static Qt::DropActions possible_actions = Qt::IgnoreAction; // for embedding only static QWidget* current_embedding_widget = 0; static XEvent last_enter_event; // cursors static QCursor *noDropCursor = 0; static QCursor *moveCursor = 0; static QCursor *copyCursor = 0; static QCursor *linkCursor = 0; static QPixmap *defaultPm = 0; static const int default_pm_hotx = -2; static const int default_pm_hoty = -16; static const char* const default_pm[] = { "13 9 3 1", ". c None", " c #000000", "X c #FFFFFF", "X X X X X X X", " X X X X X X ", "X ......... X", " X.........X ", "X ......... X", " X.........X ", "X ......... X", " X X X X X X ", "X X X X X X X" }; class QShapedPixmapWidget : public QWidget { Q_OBJECT public: QShapedPixmapWidget(QWidget* w) : QWidget(w, Qt::Tool | Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint | Qt::BypassGraphicsProxyWidget) { setAttribute(Qt::WA_X11NetWmWindowTypeDND); } void setPixmap(const QPixmap &pm) { QBitmap mask = pm.mask(); if (!mask.isNull()) { setMask(mask); } else { clearMask(); } resize(pm.width(),pm.height()); pixmap = pm; update(); } QPoint pm_hot; protected: QPixmap pixmap; void paintEvent(QPaintEvent*) { QPainter p(this); p.drawPixmap(0, 0, pixmap); } }; #include "qdnd_x11.moc" struct XdndData { QShapedPixmapWidget *deco; QWidget* desktop_proxy; }; static XdndData xdnd_data = { 0, 0 }; class QExtraWidget : public QWidget { Q_DECLARE_PRIVATE(QWidget) public: inline QWExtra* extraData(); inline QTLWExtra* topData(); }; inline QWExtra* QExtraWidget::extraData() { return d_func()->extraData(); } inline QTLWExtra* QExtraWidget::topData() { return d_func()->topData(); } static WId xdndProxy(WId w) { Atom type = XNone; int f; unsigned long n, a; unsigned char *retval = 0; XGetWindowProperty(X11->display, w, ATOM(XdndProxy), 0, 1, False, XA_WINDOW, &type, &f,&n,&a,&retval); WId *proxy_id_ptr = (WId *)retval; WId proxy_id = 0; if (type == XA_WINDOW && proxy_id_ptr) { proxy_id = *proxy_id_ptr; XFree(proxy_id_ptr); proxy_id_ptr = 0; // Already exists. Real? X11->ignoreBadwindow(); XGetWindowProperty(X11->display, proxy_id, ATOM(XdndProxy), 0, 1, False, XA_WINDOW, &type, &f,&n,&a,&retval); proxy_id_ptr = (WId *)retval; if (X11->badwindow() || type != XA_WINDOW || !proxy_id_ptr || *proxy_id_ptr != proxy_id) // Bogus - we will overwrite. proxy_id = 0; } if