| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: reparent.cpp |
| 3 | // Purpose: wxWindow |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 2002-03-09 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 21 | #pragma implementation "reparent.h" |
| 22 | #endif |
| 23 | |
| 24 | #include "wx/setup.h" |
| 25 | |
| 26 | #if !wxUSE_NANOX |
| 27 | |
| 28 | #include "wx/x11/reparent.h" |
| 29 | #include "wx/evtloop.h" |
| 30 | #include "wx/log.h" |
| 31 | #include "wx/app.h" |
| 32 | #include "wx/timer.h" |
| 33 | |
| 34 | #include "wx/x11/private.h" |
| 35 | #include "X11/Xatom.h" |
| 36 | |
| 37 | /* |
| 38 | * wxAdoptedWindow |
| 39 | */ |
| 40 | |
| 41 | wxAdoptedWindow::wxAdoptedWindow() |
| 42 | { |
| 43 | } |
| 44 | |
| 45 | wxAdoptedWindow::wxAdoptedWindow(WXWindow window) |
| 46 | { |
| 47 | m_mainWindow = window; |
| 48 | } |
| 49 | |
| 50 | wxAdoptedWindow::~wxAdoptedWindow() |
| 51 | { |
| 52 | } |
| 53 | |
| 54 | /* |
| 55 | * wxReparenter |
| 56 | */ |
| 57 | |
| 58 | static bool Xerror; |
| 59 | static Atom WM_STATE = 0; |
| 60 | bool wxReparenter::sm_done = FALSE; |
| 61 | wxAdoptedWindow* wxReparenter::sm_toReparent = NULL; |
| 62 | wxWindow* wxReparenter::sm_newParent = NULL; |
| 63 | wxString wxReparenter::sm_name; |
| 64 | bool wxReparenter::sm_exactMatch = FALSE; |
| 65 | |
| 66 | static int ErrorHandler(Display* dpy, XErrorEvent* event) |
| 67 | { |
| 68 | Xerror = True; |
| 69 | return False; |
| 70 | } |
| 71 | |
| 72 | // We assume that toReparent has had its X window set |
| 73 | // appropriately. |
| 74 | bool wxReparenter::Reparent(wxWindow* newParent, wxAdoptedWindow* toReparent) |
| 75 | { |
| 76 | XWindowAttributes xwa; |
| 77 | Window *children; |
| 78 | unsigned int numchildren, each; |
| 79 | Window returnroot, returnparent; |
| 80 | XErrorHandler old; |
| 81 | int parentOffset = 0; |
| 82 | |
| 83 | old = XSetErrorHandler(ErrorHandler); |
| 84 | XReparentWindow( wxGlobalDisplay(), |
| 85 | (Window) toReparent->GetMainWindow(), |
| 86 | (Window) newParent->GetMainWindow(), |
| 87 | 0, 0); |
| 88 | |
| 89 | if (!XQueryTree( wxGlobalDisplay(), |
| 90 | (Window) toReparent->GetMainWindow(), |
| 91 | &returnroot, &returnparent, |
| 92 | &children, &numchildren) || Xerror) |
| 93 | { |
| 94 | XSetErrorHandler(old); |
| 95 | return TRUE; |
| 96 | } |
| 97 | |
| 98 | if (numchildren > 0) |
| 99 | { |
| 100 | // TEST: see if we can get away with reparenting just |
| 101 | // first one |
| 102 | if (numchildren > 1) |
| 103 | { |
| 104 | wxLogDebug(wxT("Found %d, but only reparenting 1 child."), numchildren); |
| 105 | numchildren = 1; |
| 106 | } |
| 107 | wxLogDebug(wxT("Reparenting %d children."), numchildren); |
| 108 | /* Stacking order is preserved since XQueryTree returns its children in |
| 109 | bottommost to topmost order |
| 110 | */ |
| 111 | for (each=0; each<numchildren; each++) |
| 112 | { |
| 113 | XGetWindowAttributes( wxGlobalDisplay(), |
| 114 | children[each], &xwa); |
| 115 | fprintf(stderr, |
| 116 | "Reparenting child at offset %d and position %d, %d.\n", |
| 117 | parentOffset, parentOffset+xwa.x, parentOffset+xwa.y); |
| 118 | XReparentWindow( wxGlobalDisplay(), |
| 119 | children[each], (Window) newParent->GetMainWindow(), |
| 120 | xwa.x, xwa.y); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | XSetErrorHandler(old); |
| 125 | return TRUE; |
| 126 | } |
| 127 | |
| 128 | // Wait for an appropriate window to be created. |
| 129 | // If exactMatch is FALSE, a substring match is OK. |
| 130 | // If windowName is empty, then wait for the next overrideRedirect window. |
| 131 | bool wxReparenter::WaitAndReparent(wxWindow* newParent, wxAdoptedWindow* toReparent, |
| 132 | const wxString& windowName, |
| 133 | bool exactMatch) |
| 134 | { |
| 135 | sm_newParent = newParent; |
| 136 | sm_toReparent = toReparent; |
| 137 | sm_exactMatch = exactMatch; |
| 138 | sm_name = windowName; |
| 139 | |
| 140 | Display* display = wxGlobalDisplay(); |
| 141 | XSelectInput(display, |
| 142 | RootWindowOfScreen(DefaultScreenOfDisplay(display)), |
| 143 | SubstructureNotifyMask); |
| 144 | |
| 145 | if (!WM_STATE) |
| 146 | WM_STATE = XInternAtom(display, "WM_STATE", False); |
| 147 | |
| 148 | #ifdef __WXDEBUG__ |
| 149 | if (!windowName.IsEmpty()) |
| 150 | wxLogDebug(_T("Waiting for window %s"), windowName.c_str()); |
| 151 | #endif |
| 152 | |
| 153 | sm_done = FALSE; |
| 154 | |
| 155 | wxEventLoop eventLoop; |
| 156 | while (!sm_done) |
| 157 | { |
| 158 | if (eventLoop.Pending()) |
| 159 | { |
| 160 | XEvent xevent; |
| 161 | XNextEvent(display, & xevent); |
| 162 | if (!wxTheApp->ProcessXEvent((WXEvent*) & xevent)) |
| 163 | { |
| 164 | // Do the local event processing |
| 165 | ProcessXEvent((WXEvent*) & xevent); |
| 166 | } |
| 167 | } |
| 168 | else |
| 169 | { |
| 170 | #if wxUSE_TIMER |
| 171 | wxTimer::NotifyTimers(); |
| 172 | wxTheApp->ProcessIdle(); |
| 173 | #endif |
| 174 | } |
| 175 | } |
| 176 | return TRUE; |
| 177 | } |
| 178 | |
| 179 | bool wxReparenter::ProcessXEvent(WXEvent* event) |
| 180 | { |
| 181 | XEvent* xevent = (XEvent*) event; |
| 182 | Window client; |
| 183 | |
| 184 | if (!sm_done) |
| 185 | { |
| 186 | if (xevent->type == MapNotify) |
| 187 | { |
| 188 | wxLogDebug(_T("Window was mapped")); |
| 189 | } |
| 190 | |
| 191 | if (xevent->type == MapNotify && !xevent->xmap.override_redirect && |
| 192 | (client = (Window) FindAClientWindow((WXWindow) xevent->xmap.window, sm_name))) |
| 193 | { |
| 194 | wxLogDebug(_T("Found a client window, about to reparent")); |
| 195 | wxASSERT(sm_toReparent->GetParent() == NULL); |
| 196 | |
| 197 | sm_toReparent->SetHandle((WXWindow) client); |
| 198 | sm_newParent->AddChild(sm_toReparent); |
| 199 | sm_done = Reparent(sm_newParent, sm_toReparent); |
| 200 | return sm_done; |
| 201 | } else if (xevent->type == MapNotify && |
| 202 | xevent->xmap.override_redirect && |
| 203 | xevent->xmap.window) |
| 204 | { |
| 205 | wxLogDebug(_T("Found an override redirect window, about to reparent")); |
| 206 | sm_toReparent->SetHandle((WXWindow) xevent->xmap.window); |
| 207 | sm_newParent->AddChild(sm_toReparent); |
| 208 | wxASSERT(sm_toReparent->GetParent() == NULL); |
| 209 | |
| 210 | sm_done = Reparent(sm_newParent, sm_toReparent); |
| 211 | return sm_done; |
| 212 | } |
| 213 | } |
| 214 | return FALSE; |
| 215 | } |
| 216 | |
| 217 | WXWindow wxReparenter::FindAClientWindow(WXWindow window, const wxString& name) |
| 218 | { |
| 219 | int rvalue, i; |
| 220 | Atom actualtype; |
| 221 | int actualformat; |
| 222 | unsigned long nitems, bytesafter; |
| 223 | unsigned char *propreturn; |
| 224 | Window *children; |
| 225 | unsigned int numchildren; |
| 226 | Window returnroot, returnparent; |
| 227 | Window result = 0; |
| 228 | XErrorHandler old; |
| 229 | char *clientName; |
| 230 | |
| 231 | Xerror = False; |
| 232 | old = XSetErrorHandler(ErrorHandler); |
| 233 | rvalue = XGetWindowProperty((Display*) wxGetDisplay(), |
| 234 | (Window) window, WM_STATE, |
| 235 | 0, 1, False, |
| 236 | AnyPropertyType, &actualtype, &actualformat, |
| 237 | &nitems, &bytesafter, &propreturn); |
| 238 | |
| 239 | XSetErrorHandler(old); |
| 240 | |
| 241 | if (!Xerror && rvalue == Success && actualtype != None) |
| 242 | { |
| 243 | if (rvalue == Success) |
| 244 | { |
| 245 | XFree((char *) propreturn); |
| 246 | } |
| 247 | XFetchName((Display*) wxGetDisplay(), (Window) window, &clientName); |
| 248 | |
| 249 | wxString str1(name); |
| 250 | wxString str2 = wxString::FromAscii(clientName); |
| 251 | str1.Lower(); |
| 252 | str2.Lower(); |
| 253 | |
| 254 | bool matches; |
| 255 | if (sm_exactMatch) |
| 256 | matches = (name == wxString::FromAscii(clientName)); |
| 257 | else |
| 258 | matches = (str1.Contains(str2) || str2.Contains(str1)); |
| 259 | |
| 260 | XFree(clientName); |
| 261 | |
| 262 | if (matches) |
| 263 | return (WXWindow) window; |
| 264 | else |
| 265 | return NULL; |
| 266 | } |
| 267 | |
| 268 | old = XSetErrorHandler(ErrorHandler); |
| 269 | if (!XQueryTree((Display*) wxGetDisplay(), (Window) window, &returnroot, &returnparent, |
| 270 | &children, &numchildren) || Xerror) |
| 271 | { |
| 272 | XSetErrorHandler(old); |
| 273 | return NULL; |
| 274 | } |
| 275 | XSetErrorHandler(old); |
| 276 | |
| 277 | result = 0; |
| 278 | for (i=0; i<(int)numchildren && !result ;i++) { |
| 279 | result = (Window) FindAClientWindow((WXWindow) children[i], name); |
| 280 | } |
| 281 | if (numchildren) { |
| 282 | XFree((char *) children); |
| 283 | } return (WXWindow) result; |
| 284 | } |
| 285 | |
| 286 | #endif |