+ RectList::const_iterator it, end = rectlist.end();
+ for (it = rectlist.begin(); it != end; ++it) {
+ bool snapped = False;
+ const Rect &winrect = *it;
+ Rect offsetrect;
+ offsetrect.setCoords(winrect.left() - snap_offset,
+ winrect.top() - snap_offset,
+ winrect.right() + snap_offset,
+ winrect.bottom() + snap_offset);
+
+ if (snap_to_windows == BScreen::WindowResistance)
+ // if the window is already over top of this snap target, then
+ // resistance is futile, so just ignore it
+ if (winrect.intersects(moving))
+ continue;
+
+ int dleft, dright, dtop, dbottom;
+
+ // if the windows are in the same plane vertically
+ if (wtop >= (signed)(winrect.y() - frame.rect.height() + 1) &&
+ wtop < (signed)(winrect.y() + winrect.height() - 1)) {
+
+ if (snap_to_windows == BScreen::WindowResistance) {
+ dleft = wright - offsetrect.left();
+ dright = offsetrect.right() - wleft;
+
+ // snap left of other window?
+ if (dleft >= 0 && dleft < resistance_size &&
+ dleft < (wright - wleft)) {
+ dx = offsetrect.left() - frame.rect.width();
+ snapped = True;
+ }
+ // snap right of other window?
+ else if (dright >= 0 && dright < resistance_size &&
+ dright < (wright - wleft)) {
+ dx = offsetrect.right() + 1;
+ snapped = True;
+ }
+ } else { // BScreen::WindowSnap
+ dleft = abs(wright - offsetrect.left());
+ dright = abs(wleft - offsetrect.right());
+
+ // snap left of other window?
+ if (dleft < snap_distance && dleft <= dright) {
+ dx = offsetrect.left() - frame.rect.width();
+ snapped = True;
+ }
+ // snap right of other window?
+ else if (dright < snap_distance) {
+ dx = offsetrect.right() + 1;
+ snapped = True;
+ }
+ }
+
+ if (snapped) {
+ if (screen->getWindowCornerSnap()) {
+ // try corner-snap to its other sides
+ if (snap_to_windows == BScreen::WindowResistance) {
+ dtop = winrect.top() - wtop;
+ dbottom = wbottom - winrect.bottom();
+ if (dtop > 0 && dtop < resistance_size) {
+ // if we're already past the top edge, then don't provide
+ // resistance
+ if (moving.top() >= winrect.top())
+ dy = winrect.top();
+ } else if (dbottom > 0 && dbottom < resistance_size) {
+ // if we're already past the bottom edge, then don't provide
+ // resistance
+ if (moving.bottom() <= winrect.bottom())
+ dy = winrect.bottom() - frame.rect.height() + 1;
+ }
+ } else { // BScreen::WindowSnap
+ dtop = abs(wtop - winrect.top());
+ dbottom = abs(wbottom - winrect.bottom());
+ if (dtop < snap_distance && dtop <= dbottom)
+ dy = winrect.top();
+ else if (dbottom < snap_distance)
+ dy = winrect.bottom() - frame.rect.height() + 1;
+ }
+ }
+
+ continue;
+ }
+ }
+
+ // if the windows are on the same plane horizontally
+ if (wleft >= (signed)(winrect.x() - frame.rect.width() + 1) &&
+ wleft < (signed)(winrect.x() + winrect.width() - 1)) {
+
+ if (snap_to_windows == BScreen::WindowResistance) {
+ dtop = wbottom - offsetrect.top();
+ dbottom = offsetrect.bottom() - wtop;
+
+ // snap top of other window?
+ if (dtop >= 0 && dtop < resistance_size && dtop < (wbottom - wtop)) {
+ dy = offsetrect.top() - frame.rect.height();
+ snapped = True;
+ }
+ // snap bottom of other window?
+ else if (dbottom >= 0 && dbottom < resistance_size &&
+ dbottom < (wbottom - wtop)) {
+ dy = offsetrect.bottom() + 1;
+ snapped = True;
+ }
+ } else { // BScreen::WindowSnap
+ dtop = abs(wbottom - offsetrect.top());
+ dbottom = abs(wtop - offsetrect.bottom());
+
+ // snap top of other window?
+ if (dtop < snap_distance && dtop <= dbottom) {
+ dy = offsetrect.top() - frame.rect.height();
+ snapped = True;
+ }
+ // snap bottom of other window?
+ else if (dbottom < snap_distance) {
+ dy = offsetrect.bottom() + 1;
+ snapped = True;
+ }
+
+ }
+
+ if (snapped) {
+ if (screen->getWindowCornerSnap()) {
+ // try corner-snap to its other sides
+ if (snap_to_windows == BScreen::WindowResistance) {
+ dleft = winrect.left() - wleft;
+ dright = wright - winrect.right();
+ if (dleft > 0 && dleft < resistance_size) {
+ // if we're already past the left edge, then don't provide
+ // resistance
+ if (moving.left() >= winrect.left())
+ dx = winrect.left();
+ } else if (dright > 0 && dright < resistance_size) {
+ // if we're already past the right edge, then don't provide
+ // resistance
+ if (moving.right() <= winrect.right())
+ dx = winrect.right() - frame.rect.width() + 1;
+ }
+ } else { // BScreen::WindowSnap
+ dleft = abs(wleft - winrect.left());
+ dright = abs(wright - winrect.right());
+ if (dleft < snap_distance && dleft <= dright)
+ dx = winrect.left();
+ else if (dright < snap_distance)
+ dx = winrect.right() - frame.rect.width() + 1;
+ }
+ }
+
+ continue;
+ }
+ }
+ }