Differential D23474 Diff 64847 src/Platforms/PlatformXcb.cpp

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src/Platforms/PlatformXcb.cpp

Show First 20 Lines • Show All 56 Lines • ▼ Show 20 Line(s)55{
57 { 57​ {
58 if (theXcbImage) { 58​ if (theXcbImage) {
59 xcb_image_destroy(theXcbImage); 59​ xcb_image_destroy(theXcbImage);
60 } 60​ }
61 } 61​ }
62}; 62​};
63using XcbImagePtr = std::unique_ptr<xcb_image_t, XcbImagePtrDeleter>; 63​using XcbImagePtr = std::unique_ptr<xcb_image_t, XcbImagePtrDeleter>;
64 64​
65​struct CFreeDeleter
66​{
67​ void operator()(void *ptr) const
68​ {
69​ free(ptr);
70​ }
71​};
72​template<typename Reply>
73​using XcbReplyPtr = std::unique_ptr<Reply, CFreeDeleter>;
74​
65/* -- On Click Native Event Filter ------------------------------------------------------------- */ 75​/* -- On Click Native Event Filter ------------------------------------------------------------- */
66 76​
67class PlatformXcb::OnClickEventFilter: public QAbstractNativeEventFilter 77​class PlatformXcb::OnClickEventFilter: public QAbstractNativeEventFilter
68{ 78​{
69 public: 79​ public:
70 80​
71 explicit OnClickEventFilter(PlatformXcb *thePlatformPtr) : 81​ explicit OnClickEventFilter(PlatformXcb *thePlatformPtr) :
72 mPlatformPtr(thePlatformPtr) 82​ mPlatformPtr(thePlatformPtr)
▲ Show 20 Lines • Show All 113 Lines • ▼ Show 20 Line(s)
186QPoint PlatformXcb::getCursorPosition() 196​QPoint PlatformXcb::getCursorPosition()
187{ 197​{
188 // QCursor::pos() is not used because it requires additional calculations. 198​ // QCursor::pos() is not used because it requires additional calculations.
189 // Its value is the offset to the origin of the current screen is in 199​ // Its value is the offset to the origin of the current screen is in
190 // device-independent pixels while the origin itself uses native pixels. 200​ // device-independent pixels while the origin itself uses native pixels.
191 201​
192 auto lXcbConn = QX11Info::connection(); 202​ auto lXcbConn = QX11Info::connection();
193 auto lPointerCookie = xcb_query_pointer_unchecked(lXcbConn, QX11Info::appRootWindow()); 203​ auto lPointerCookie = xcb_query_pointer_unchecked(lXcbConn, QX11Info::appRootWindow());
194 std::unique_ptr<xcb_query_pointer_reply_t> lPointerReply(xcb_query_pointer_reply(lXcbConn, lPointerCookie, nullptr)); 204​ XcbReplyPtr<xcb_query_pointer_reply_t> lPointerReply(xcb_query_pointer_reply(lXcbConn, lPointerCookie, nullptr));
195 205​
196 return QPoint(lPointerReply->root_x, lPointerReply->root_y); 206​ return QPoint(lPointerReply->root_x, lPointerReply->root_y);
197} 207​}
198 208​
199QRect PlatformXcb::getDrawableGeometry(xcb_drawable_t theDrawable) 209​QRect PlatformXcb::getDrawableGeometry(xcb_drawable_t theDrawable)
200{ 210​{
201 auto lXcbConn = QX11Info::connection(); 211​ auto lXcbConn = QX11Info::connection();
202 auto lGeoCookie = xcb_get_geometry_unchecked(lXcbConn, theDrawable); 212​ auto lGeoCookie = xcb_get_geometry_unchecked(lXcbConn, theDrawable);
203 std::unique_ptr<xcb_get_geometry_reply_t> lGeoReply(xcb_get_geometry_reply(lXcbConn, lGeoCookie, nullptr)); 213​ XcbReplyPtr<xcb_get_geometry_reply_t> lGeoReply(xcb_get_geometry_reply(lXcbConn, lGeoCookie, nullptr));
204 if (!lGeoReply) { 214​ if (!lGeoReply) {
205 return QRect(); 215​ return QRect();
206 } 216​ }
207 return QRect(lGeoReply->x, lGeoReply->y, lGeoReply->width, lGeoReply->height); 217​ return QRect(lGeoReply->x, lGeoReply->y, lGeoReply->width, lGeoReply->height);
208} 218​}
209 219​
210xcb_window_t PlatformXcb::getWindowUnderCursor() 220​xcb_window_t PlatformXcb::getWindowUnderCursor()
211{ 221​{
212 auto lXcbConn = QX11Info::connection(); 222​ auto lXcbConn = QX11Info::connection();
213 auto lAppWin = QX11Info::appRootWindow(); 223​ auto lAppWin = QX11Info::appRootWindow();
214 224​
215 const QByteArray lAtomName("WM_STATE"); 225​ const QByteArray lAtomName("WM_STATE");
216 auto lAtomCookie = xcb_intern_atom_unchecked(lXcbConn, 0, lAtomName.length(), lAtomName.constData()); 226​ auto lAtomCookie = xcb_intern_atom_unchecked(lXcbConn, 0, lAtomName.length(), lAtomName.constData());
217 auto lPointerCookie = xcb_query_pointer_unchecked(lXcbConn, lAppWin); 227​ auto lPointerCookie = xcb_query_pointer_unchecked(lXcbConn, lAppWin);
218 std::unique_ptr<xcb_intern_atom_reply_t> lAtomReply(xcb_intern_atom_reply(lXcbConn, lAtomCookie, nullptr)); 228​ XcbReplyPtr<xcb_intern_atom_reply_t> lAtomReply(xcb_intern_atom_reply(lXcbConn, lAtomCookie, nullptr));
219 std::unique_ptr<xcb_query_pointer_reply_t> lPointerReply(xcb_query_pointer_reply(lXcbConn, lPointerCookie, nullptr)); 229​ XcbReplyPtr<xcb_query_pointer_reply_t> lPointerReply(xcb_query_pointer_reply(lXcbConn, lPointerCookie, nullptr));
220 230​
221 if (lAtomReply->atom == XCB_ATOM_NONE) { 231​ if (lAtomReply->atom == XCB_ATOM_NONE) {
222 return QX11Info::appRootWindow(); 232​ return QX11Info::appRootWindow();
223 } 233​ }
224 234​
225 // now start testing 235​ // now start testing
226 QStack<xcb_window_t> lWindowStack; 236​ QStack<xcb_window_t> lWindowStack;
227 lWindowStack.push(lPointerReply->child); 237​ lWindowStack.push(lPointerReply->child);
228 238​
229 while (!lWindowStack.isEmpty()) { 239​ while (!lWindowStack.isEmpty()) {
230 lAppWin = lWindowStack.pop(); 240​ lAppWin = lWindowStack.pop();
231 241​
232 // next, check if our window has the WM_STATE property set on 242​ // next, check if our window has the WM_STATE property set on
233 // the window. if yes, return the window - we have found it 243​ // the window. if yes, return the window - we have found it
234 auto lPropCookie = xcb_get_property_unchecked(lXcbConn, 0, lAppWin, lAtomReply->atom, XCB_ATOM_ANY, 0, 0); 244​ auto lPropCookie = xcb_get_property_unchecked(lXcbConn, 0, lAppWin, lAtomReply->atom, XCB_ATOM_ANY, 0, 0);
235 std::unique_ptr<xcb_get_property_reply_t> lPropReply(xcb_get_property_reply(lXcbConn, lPropCookie, nullptr)); 245​ XcbReplyPtr<xcb_get_property_reply_t> lPropReply(xcb_get_property_reply(lXcbConn, lPropCookie, nullptr));
236 246​
237 if (lPropReply->type != XCB_ATOM_NONE) { 247​ if (lPropReply->type != XCB_ATOM_NONE) {
238 return lAppWin; 248​ return lAppWin;
239 } 249​ }
240 250​
241 // if we're here, this means the window is not the real window 251​ // if we're here, this means the window is not the real window
242 // we should start looking at its children 252​ // we should start looking at its children
243 auto lTreeCookie = xcb_query_tree_unchecked(lXcbConn, lAppWin); 253​ auto lTreeCookie = xcb_query_tree_unchecked(lXcbConn, lAppWin);
244 std::unique_ptr<xcb_query_tree_reply_t> lTreeReply(xcb_query_tree_reply(lXcbConn, lTreeCookie, nullptr)); 254​ XcbReplyPtr<xcb_query_tree_reply_t> lTreeReply(xcb_query_tree_reply(lXcbConn, lTreeCookie, nullptr));
245 auto lWindowChildren = xcb_query_tree_children(lTreeReply.get()); 255​ auto lWindowChildren = xcb_query_tree_children(lTreeReply.get());
246 auto lWindowChildrenLength = xcb_query_tree_children_length(lTreeReply.get()); 256​ auto lWindowChildrenLength = xcb_query_tree_children_length(lTreeReply.get());
247 257​
248 for (int iIdx = lWindowChildrenLength - 1; iIdx >= 0; iIdx--) { 258​ for (int iIdx = lWindowChildrenLength - 1; iIdx >= 0; iIdx--) {
249 lWindowStack.push(lWindowChildren[iIdx]); 259​ lWindowStack.push(lWindowChildren[iIdx]);
250 } 260​ }
251 } 261​ }
252 262​
▲ Show 20 Lines • Show All 73 Lines • ▼ Show 20 Line(s)332{
326 if (!theRect.contains(lCursorPos)) { 336​ if (!theRect.contains(lCursorPos)) {
327 return thePixmap; 337​ return thePixmap;
328 } 338​ }
329 339​
330 // now we can get the image and start processing 340​ // now we can get the image and start processing
331 auto lXcbConn = QX11Info::connection(); 341​ auto lXcbConn = QX11Info::connection();
332 342​
333 auto lCursorCookie = xcb_xfixes_get_cursor_image_unchecked(lXcbConn); 343​ auto lCursorCookie = xcb_xfixes_get_cursor_image_unchecked(lXcbConn);
334 std::unique_ptr<xcb_xfixes_get_cursor_image_reply_t> lCursorReply(xcb_xfixes_get_cursor_image_reply(lXcbConn, lCursorCookie, nullptr)); 344​ XcbReplyPtr<xcb_xfixes_get_cursor_image_reply_t> lCursorReply(xcb_xfixes_get_cursor_image_reply(lXcbConn, lCursorCookie, nullptr));
335 if (!lCursorReply) { 345​ if (!lCursorReply) {
336 return thePixmap; 346​ return thePixmap;
337 } 347​ }
338 348​
339 // get the image and process it into a qimage 349​ // get the image and process it into a qimage
340 auto lPixelData = xcb_xfixes_get_cursor_image_cursor_image(lCursorReply.get()); 350​ auto lPixelData = xcb_xfixes_get_cursor_image_cursor_image(lCursorReply.get());
341 if (!lPixelData) { 351​ if (!lPixelData) {
342 return thePixmap; 352​ return thePixmap;
▲ Show 20 Lines • Show All 78 Lines • ▼ Show 20 Line(s)
421} 431​}
422 432​
423QPixmap PlatformXcb::getWindowPixmap(xcb_window_t theWindow, bool theBlendPointer) 433​QPixmap PlatformXcb::getWindowPixmap(xcb_window_t theWindow, bool theBlendPointer)
424{ 434​{
425 auto lXcbConn = QX11Info::connection(); 435​ auto lXcbConn = QX11Info::connection();
426 436​
427 // first get geometry information for our window 437​ // first get geometry information for our window
428 auto lGeoCookie = xcb_get_geometry_unchecked(lXcbConn, theWindow); 438​ auto lGeoCookie = xcb_get_geometry_unchecked(lXcbConn, theWindow);
429 std::unique_ptr<xcb_get_geometry_reply_t> lGeoReply(xcb_get_geometry_reply(lXcbConn, lGeoCookie, nullptr)); 439​ XcbReplyPtr<xcb_get_geometry_reply_t> lGeoReply(xcb_get_geometry_reply(lXcbConn, lGeoCookie, nullptr));
430 QRect lWindowRect(lGeoReply->x, lGeoReply->y, lGeoReply->width, lGeoReply->height); 440​ QRect lWindowRect(lGeoReply->x, lGeoReply->y, lGeoReply->width, lGeoReply->height);
431 441​
432 // then proceed to get an image 442​ // then proceed to get an image
433 auto lPixmap = getPixmapFromDrawable(theWindow, lWindowRect); 443​ auto lPixmap = getPixmapFromDrawable(theWindow, lWindowRect);
434 444​
435 // translate window coordinates to global ones. 445​ // translate window coordinates to global ones.
436 auto lRootGeoCookie = xcb_get_geometry_unchecked(lXcbConn, lGeoReply->root); 446​ auto lRootGeoCookie = xcb_get_geometry_unchecked(lXcbConn, lGeoReply->root);
437 std::unique_ptr<xcb_get_geometry_reply_t> lRootGeoReply(xcb_get_geometry_reply(lXcbConn, lRootGeoCookie, nullptr)); 447​ XcbReplyPtr<xcb_get_geometry_reply_t> lRootGeoReply(xcb_get_geometry_reply(lXcbConn, lRootGeoCookie, nullptr));
438 auto lTranslateCookie = xcb_translate_coordinates_unchecked(lXcbConn, theWindow, lGeoReply->root, lRootGeoReply->x, lRootGeoReply->y); 448​ auto lTranslateCookie = xcb_translate_coordinates_unchecked(lXcbConn, theWindow, lGeoReply->root, lRootGeoReply->x, lRootGeoReply->y);
439 std::unique_ptr<xcb_translate_coordinates_reply_t> lTranslateReply(xcb_translate_coordinates_reply(lXcbConn, lTranslateCookie, nullptr)); 449​ XcbReplyPtr<xcb_translate_coordinates_reply_t> lTranslateReply(xcb_translate_coordinates_reply(lXcbConn, lTranslateCookie, nullptr));
440 450​
441 // adjust local to global coordinates. 451​ // adjust local to global coordinates.
442 lWindowRect.moveRight(lWindowRect.x() + lTranslateReply->dst_x); 452​ lWindowRect.moveRight(lWindowRect.x() + lTranslateReply->dst_x);
443 lWindowRect.moveTop(lWindowRect.y() + lTranslateReply->dst_y); 453​ lWindowRect.moveTop(lWindowRect.y() + lTranslateReply->dst_y);
444 454​
445 // if the window capture failed, try to obtain one from the full screen. 455​ // if the window capture failed, try to obtain one from the full screen.
446 if (lPixmap.isNull()) { 456​ if (lPixmap.isNull()) {
447 return getToplevelPixmap(lWindowRect, theBlendPointer); 457​ return getToplevelPixmap(lWindowRect, theBlendPointer);
▲ Show 20 Lines • Show All 273 Lines • ▼ Show 20 Line(s)728 xcb_grab_pointer_cookie_t grabPointerCookie = xcb_grab_pointer_unchecked(
721 QX11Info::appRootWindow(), // window to grab pointer for (root) 731​ QX11Info::appRootWindow(), // window to grab pointer for (root)
722 XCB_EVENT_MASK_BUTTON_RELEASE, // which events do I want 732​ XCB_EVENT_MASK_BUTTON_RELEASE, // which events do I want
723 XCB_GRAB_MODE_SYNC, // pointer grab mode 733​ XCB_GRAB_MODE_SYNC, // pointer grab mode
724 XCB_GRAB_MODE_ASYNC, // keyboard grab mode (why is this even here) 734​ XCB_GRAB_MODE_ASYNC, // keyboard grab mode (why is this even here)
725 XCB_NONE, // confine pointer to which window (none) 735​ XCB_NONE, // confine pointer to which window (none)
726 lXcbCursor, // cursor to change to for the duration of grab 736​ lXcbCursor, // cursor to change to for the duration of grab
727 XCB_TIME_CURRENT_TIME // do this right now 737​ XCB_TIME_CURRENT_TIME // do this right now
728 ); 738​ );
729 std::unique_ptr<xcb_grab_pointer_reply_t> lGrabPointerReply(xcb_grab_pointer_reply(QX11Info::connection(), grabPointerCookie, nullptr)); 739​ XcbReplyPtr<xcb_grab_pointer_reply_t> lGrabPointerReply(xcb_grab_pointer_reply(QX11Info::connection(), grabPointerCookie, nullptr));
730 740​
731 // if the grab failed, take the screenshot right away 741​ // if the grab failed, take the screenshot right away
732 if (lGrabPointerReply->status != XCB_GRAB_STATUS_SUCCESS) { 742​ if (lGrabPointerReply->status != XCB_GRAB_STATUS_SUCCESS) {
733 doGrabNow(theGrabMode, theIncludePointer, theIncludeDecorations); 743​ doGrabNow(theGrabMode, theIncludePointer, theIncludeDecorations);
734 return; 744​ return;
735 } 745​ }
736 746​
737 // fix things if our pointer grab causes a lockup and install our event filter 747​ // fix things if our pointer grab causes a lockup and install our event filter
738 mNativeEventFilter->setCaptureOptions(theGrabMode, theIncludePointer, theIncludeDecorations); 748​ mNativeEventFilter->setCaptureOptions(theGrabMode, theIncludePointer, theIncludeDecorations);
739 xcb_allow_events(QX11Info::connection(), XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME); 749​ xcb_allow_events(QX11Info::connection(), XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME);
740 qApp->installNativeEventFilter(mNativeEventFilter); 750​ qApp->installNativeEventFilter(mNativeEventFilter);
741 751​
742 // done. clean stuff up 752​ // done. clean stuff up
743 xcb_cursor_context_free(lXcbCursorCtx); 753​ xcb_cursor_context_free(lXcbCursorCtx);
744 xcb_free_cursor(QX11Info::connection(), lXcbCursor); 754​ xcb_free_cursor(QX11Info::connection(), lXcbCursor);
745} 755​}