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add the functionality for window-window snapping

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This commit is contained in:
Dana Jansens 2002-06-22 04:48:33 +00:00
parent f4c0547b7a
commit b2e9af8886
2 changed files with 89 additions and 6 deletions
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2
src/Screen.cc
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@ -1431,6 +1431,8 @@ void BScreen::raiseWindows(Window *workspace_stack, unsigned int num) {
void BScreen::lowerDesktops(void) {
if (desktopWindowList.empty()) return;
XLowerWindow(blackbox->getXDisplay(), desktopWindowList[0]);
if (desktopWindowList.size() > 1)
XRestackWindows(blackbox->getXDisplay(), &desktopWindowList[0],

93
src/Window.cc
View file

@ -2786,6 +2786,7 @@ void BlackboxWindow::beginMove(int x_root, int y_root) {
frame.grab_y = y_root - frame.rect.y() - frame.border_w;
}
void BlackboxWindow::doMove(int x_root, int y_root) {
assert(flags.moving);
assert(blackbox->getChangingWindow() == this);
@ -2797,16 +2798,96 @@ void BlackboxWindow::doMove(int x_root, int y_root) {
const int snap_distance = screen->getEdgeSnapThreshold();
if (snap_distance) {
Rect srect = screen->availableArea();
// window corners
const int wleft = dx,
wright = dx + frame.rect.width() - 1,
wtop = dy,
wbottom = dy + frame.rect.height() - 1;
wright = dx + frame.rect.width() - 1,
wtop = dy,
wbottom = dy + frame.rect.height() - 1;
if (screen->getWindowToWindowSnap()) {
Workspace *w = screen->getWorkspace(getWorkspaceNumber());
assert(w);
// try snap to another window
for (unsigned int i = 0, c = w->getCount(); i < c; ++i) {
BlackboxWindow *snapwin = w->getWindow(i);
if (snapwin == this)
continue; // don't snap to self
bool snapped = False;
const Rect &winrect = snapwin->frameRect();
int dleft = std::abs(wright - winrect.left()),
dright = std::abs(wleft - winrect.right()),
dtop = std::abs(wbottom - winrect.top()),
dbottom = std::abs(wtop - winrect.bottom());
if (wtop >= (signed)(winrect.y() - frame.rect.height() + 1) &&
wtop < (signed)(winrect.y() + winrect.height() - 1)) {
// snap left of other window?
if (dleft < snap_distance && dleft <= dright) {
dx = winrect.left() - frame.rect.width();
snapped = True;
}
// snap right of other window?
else if (dright < snap_distance) {
dx = winrect.right() + 1;
snapped = True;
}
if (snapped) {
if (screen->getWindowCornerSnap()) {
// try corner-snap to its other sides
dtop = std::abs(wtop - winrect.top());
dbottom = std::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 (wleft >= (signed)(winrect.x() - frame.rect.width() + 1) &&
wleft < (signed)(winrect.x() + winrect.width() - 1)) {
// snap top of other window?
if (dtop < snap_distance && dtop <= dbottom) {
dy = winrect.top() - frame.rect.height();
snapped = True;
}
// snap bottom of other window?
else if (dbottom < snap_distance) {
dy = winrect.bottom() + 1;
snapped = True;
}
if (snapped) {
if (screen->getWindowCornerSnap()) {
// try corner-snap to its other sides
dleft = std::abs(wleft - winrect.left());
dright = std::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;
}
}
}
}
// try snap to the screen's available area
Rect srect = screen->availableArea();
int dleft = std::abs(wleft - srect.left()),
dright = std::abs(wright - srect.right()),
dtop = std::abs(wtop - srect.top()),
dright = std::abs(wright - srect.right()),
dtop = std::abs(wtop - srect.top()),
dbottom = std::abs(wbottom - srect.bottom());
// snap left?