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detect if drags appear to be vertical or horizontal as we cross the move threshold

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This commit is contained in:
Paul Davis 2015-02-12 13:37:18 -05:00
parent f3e25d1291
commit 5f6648e5bb
2 changed files with 30 additions and 14 deletions
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39
gtk2_ardour/editor_drag.cc
View file

@ -216,7 +216,8 @@ Drag::Drag (Editor* e, ArdourCanvas::Item* i, bool trackview_only)
, _pointer_frame_offset (0)
, _trackview_only (trackview_only)
, _move_threshold_passed (false)
, _starting_point_passed (false)
, _starting_point_passed (false)
, _initially_vertical (false)
, _was_double_click (false)
, _raw_grab_frame (0)
, _grab_frame (0)
@ -378,21 +379,35 @@ Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
if (active (_editor->mouse_mode) && _move_threshold_passed) {
if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
if (old_move_threshold_passed != _move_threshold_passed) {
/* just changed */
if (fabs (current_pointer_y() - _grab_y) > fabs (current_pointer_x() - _grab_x)) {
_initially_vertical = true;
} else {
_initially_vertical = false;
}
cerr << "IV = " << _initially_vertical << endl;
}
if (!from_autoscroll) {
_editor->maybe_autoscroll (true, allow_vertical_autoscroll (), false);
}
if (!_editor->autoscroll_active() || from_autoscroll) {
bool first_move = (_move_threshold_passed != old_move_threshold_passed) ||
(from_autoscroll && !_starting_point_passed);
bool first_move = (_move_threshold_passed != old_move_threshold_passed) ||
(from_autoscroll && !_starting_point_passed);
motion (event, first_move);
if (first_move) {
_starting_point_passed = true;
}
if (first_move) {
_starting_point_passed = true;
}
_last_pointer_x = _drags->current_pointer_x ();
_last_pointer_y = current_pointer_y ();
_last_pointer_frame = adjusted_current_frame (event);
@ -1446,8 +1461,8 @@ RegionMotionDrag::aborted (bool)
* @param c true to make copies of the regions being moved, otherwise false.
*/
RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
: RegionMotionDrag (e, i, p, v, b),
_copy (c)
: RegionMotionDrag (e, i, p, v, b)
, _copy (c)
{
DEBUG_TRACE (DEBUG::Drags, "New RegionMoveDrag\n");

5
gtk2_ardour/editor_drag.h
View file

@ -257,8 +257,9 @@ protected:
private:
bool _trackview_only; ///< true if pointer y value should always be relative to the top of the trackview group
bool _move_threshold_passed; ///< true if the move threshold has been passed, otherwise false
bool _starting_point_passed; ///< true if we called move () with first_move flag, otherwise false
bool _was_double_click; ///< true if drag initiated by a double click event
bool _starting_point_passed; ///< true if we called move () with first_move flag, otherwise false
bool _initially_vertical; ///< true if after move threshold is passed we appear to be moving vertically; undefined before that
bool _was_double_click; ///< true if drag initiated by a double click event
double _grab_x; ///< trackview x of the grab start position
double _grab_y; ///< y of the grab start position, possibly adjusted if _trackview_only is true
double _last_pointer_x; ///< trackview x of the pointer last time a motion occurred