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display: snap monitors to aligned centers in the arrangement view #384

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display: snap monitors to aligned centers in the arrangement view #384

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8 changes: 8 additions & 0 deletions panels/display/cc-display-arrangement.c
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Original file line number Diff line number Diff line change
Expand Up @@ -416,6 +416,10 @@ find_best_snapping (CcDisplayConfig *config,
maybe_update_snap (snap_data, x1, y1, _x1, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x2 - w, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);

/* Centers aligned, stacked on the top/bottom */
maybe_update_snap (snap_data, x1, y1, _x1 + _w / 2 - w / 2, top_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);
maybe_update_snap (snap_data, x1, y1, _x1 + _w / 2 - w / 2, bottom_snap_pos, SNAP_DIR_BOTH, SNAP_DIR_Y, 0);

/* Top/bottom edge identical on the left */
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
Expand All @@ -424,6 +428,10 @@ find_best_snapping (CcDisplayConfig *config,
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y2 - h, SNAP_DIR_BOTH, SNAP_DIR_X, 0);

/* Centers aligned, side by side on the left/right */
maybe_update_snap (snap_data, x1, y1, left_snap_pos, _y1 + _h / 2 - h / 2, SNAP_DIR_BOTH, SNAP_DIR_X, 0);
maybe_update_snap (snap_data, x1, y1, right_snap_pos, _y1 + _h / 2 - h / 2, SNAP_DIR_BOTH, SNAP_DIR_X, 0);

/* If snapping is infinite, then add snapping points with minimal overlap
* to prevent detachment.
* This is similar to the above but simply re-defines the snapping pos
Expand Down