X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fcanvas%2Fitem.cc;h=ab8764a97a9677ad5ac138d4d85c27e054b83bb3;hb=736038556fa41607d54a57fd3339d4fd1782bddf;hp=90bf0972f0ed60677bd1144027fdcbd5fbe03762;hpb=36a34dc1a48552f6ef820ea964be7a79cc72f8bf;p=ardour.git diff --git a/libs/canvas/item.cc b/libs/canvas/item.cc index 90bf0972f0..ab8764a97a 100644 --- a/libs/canvas/item.cc +++ b/libs/canvas/item.cc @@ -25,7 +25,6 @@ #include "canvas/canvas.h" #include "canvas/debug.h" -#include "canvas/group.h" #include "canvas/item.h" #include "canvas/scroll_group.h" @@ -33,6 +32,8 @@ using namespace std; using namespace PBD; using namespace ArdourCanvas; +int Item::default_items_per_cell = 64; + Item::Item (Canvas* canvas) : Fill (*this) , Outline (*this) @@ -41,12 +42,13 @@ Item::Item (Canvas* canvas) , _scroll_parent (0) , _visible (true) , _bounding_box_dirty (true) + , _lut (0) , _ignore_events (false) { DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this)); } -Item::Item (Group* parent) +Item::Item (Item* parent) : Fill (*this) , Outline (*this) , _canvas (parent->canvas()) @@ -54,6 +56,7 @@ Item::Item (Group* parent) , _scroll_parent (0) , _visible (true) , _bounding_box_dirty (true) + , _lut (0) , _ignore_events (false) { DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this)); @@ -65,7 +68,7 @@ Item::Item (Group* parent) find_scroll_parent (); } -Item::Item (Group* parent, Duple const& p) +Item::Item (Item* parent, Duple const& p) : Fill (*this) , Outline (*this) , _canvas (parent->canvas()) @@ -74,6 +77,7 @@ Item::Item (Group* parent, Duple const& p) , _position (p) , _visible (true) , _bounding_box_dirty (true) + , _lut (0) , _ignore_events (false) { DEBUG_TRACE (DEBUG::CanvasItems, string_compose ("new canvas item %1\n", this)); @@ -95,6 +99,24 @@ Item::~Item () if (_canvas) { _canvas->item_going_away (this, _bounding_box); } + + clear_items (true); + delete _lut; +} + +bool +Item::visible() const +{ + Item const * i = this; + + while (i) { + if (!i->self_visible()) { + return false; + } + i = i->parent(); + } + + return true; } Duple @@ -209,14 +231,16 @@ Item::window_to_item (ArdourCanvas::Duple const & d) const } ArdourCanvas::Rect -Item::item_to_window (ArdourCanvas::Rect const & r) const +Item::item_to_window (ArdourCanvas::Rect const & r, bool rounded) const { Rect ret = item_to_canvas (r).translate (-scroll_offset()); - ret.x0 = round (ret.x0); - ret.x1 = round (ret.x1); - ret.y0 = round (ret.y0); - ret.y1 = round (ret.y1); + if (rounded) { + ret.x0 = round (ret.x0); + ret.x1 = round (ret.x1); + ret.y0 = round (ret.y0); + ret.y1 = round (ret.y1); + } return ret; } @@ -247,10 +271,17 @@ Item::set_position (Duple p) _position = p; - _canvas->item_moved (this, pre_change_parent_bounding_box); + /* only update canvas and parent if visible. Otherwise, this + will be done when ::show() is called. + */ + + if (visible()) { + _canvas->item_moved (this, pre_change_parent_bounding_box); + - if (_parent) { - _parent->child_changed (); + if (_parent) { + _parent->child_changed (); + } } } @@ -295,7 +326,29 @@ Item::hide () { if (_visible) { _visible = false; - _canvas->item_shown_or_hidden (this); + + /* children are all hidden because we are hidden, no need + to propagate change because our bounding box necessarily + includes them all already. thus our being hidden results + in (a) a redraw of the entire bounding box (b) no children + will be drawn. + + BUT ... current item in canvas might be one of our children, + which is now hidden. So propagate away. + */ + + for (list::iterator i = _items.begin(); i != _items.end(); ++i) { + + if ((*i)->self_visible()) { + /* item was visible but is now hidden because + we (its parent) are hidden + */ + (*i)->propagate_show_hide (); + } + } + + + propagate_show_hide (); } } @@ -303,9 +356,32 @@ void Item::show () { if (!_visible) { + _visible = true; - _canvas->item_shown_or_hidden (this); + + for (list::iterator i = _items.begin(); i != _items.end(); ++i) { + if ((*i)->self_visible()) { + /* item used to be hidden by us (its parent), + but is now visible + */ + (*i)->propagate_show_hide (); + } + } + + propagate_show_hide (); + } +} + +void +Item::propagate_show_hide () +{ + /* bounding box may have changed while we were hidden */ + + if (_parent) { + _parent->child_changed (); } + + _canvas->item_shown_or_hidden (this); } Duple @@ -334,7 +410,7 @@ Item::unparent () } void -Item::reparent (Group* new_parent) +Item::reparent (Item* new_parent) { if (new_parent == _parent) { return; @@ -500,6 +576,7 @@ Item::bounding_box () const if (_bounding_box_dirty) { compute_bounding_box (); assert (!_bounding_box_dirty); + add_child_bounding_boxes (); } return _bounding_box; @@ -519,7 +596,7 @@ Item::height () const Coord Item::width () const { - boost::optional bb = bounding_box().get(); + boost::optional bb = bounding_box(); if (bb) { return bb->width (); @@ -531,7 +608,7 @@ Item::width () const void Item::redraw () const { - if (_visible && _bounding_box && _canvas) { + if (visible() && _bounding_box && _canvas) { _canvas->request_redraw (item_to_window (_bounding_box.get())); } } @@ -545,9 +622,9 @@ Item::begin_change () void Item::end_change () { - if (_visible) { + if (visible()) { _canvas->item_changed (this, _pre_change_bounding_box); - + if (_parent) { _parent->child_changed (); } @@ -562,7 +639,7 @@ Item::begin_visual_change () void Item::end_visual_change () { - if (_visible) { + if (visible()) { _canvas->item_visual_property_changed (this); } } @@ -610,30 +687,6 @@ Item::set_ignore_events (bool ignore) _ignore_events = ignore; } -void -Item::dump (ostream& o) const -{ - boost::optional bb = bounding_box(); - - o << _canvas->indent() << whatami() << ' ' << this << " Visible ? " << _visible; - o << " @ " << position(); - -#ifdef CANVAS_DEBUG - if (!name.empty()) { - o << ' ' << name; - } -#endif - - if (bb) { - o << endl << _canvas->indent() << "\tbbox: " << bb.get(); - o << endl << _canvas->indent() << "\tCANVAS bbox: " << item_to_canvas (bb.get()); - } else { - o << " bbox unset"; - } - - o << endl; -} - std::string Item::whatami () const { @@ -671,6 +724,398 @@ Item::covers (Duple const & point) const return r.get().contains (p); } +/* nesting/grouping API */ + +void +Item::render_children (Rect const & area, Cairo::RefPtr context) const +{ + if (_items.empty()) { + return; + } + + ensure_lut (); + std::vector items = _lut->get (area); + +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << string_compose ("%1%7 %2 @ %7 render %5 @ %6 %3 items out of %4\n", + _canvas->render_indent(), (name.empty() ? string ("[unnamed]") : name), items.size(), _items.size(), area, _position, this, + whatami()); + } +#endif + + ++render_depth; + + for (std::vector::const_iterator i = items.begin(); i != items.end(); ++i) { + + if (!(*i)->visible ()) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << _canvas->render_indent() << "Item " << (*i)->whatami() << " [" << (*i)->name << "] invisible - skipped\n"; + } +#endif + continue; + } + + boost::optional item_bbox = (*i)->bounding_box (); + + if (!item_bbox) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << _canvas->render_indent() << "Item " << (*i)->whatami() << " [" << (*i)->name << "] empty - skipped\n"; + } +#endif + continue; + } + + Rect item = (*i)->item_to_window (item_bbox.get(), false); + boost::optional d = item.intersection (area); + + if (d) { + Rect draw = d.get(); + if (draw.width() && draw.height()) { +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + if (dynamic_cast(*i) == 0) { + cerr << _canvas->render_indent() << "render " + << ' ' + << (*i) + << ' ' + << (*i)->whatami() + << ' ' + << (*i)->name + << " item " + << item_bbox.get() + << " window = " + << item + << " intersect = " + << draw + << " @ " + << _position + << endl; + } + } +#endif + + (*i)->render (area, context); + ++render_count; + } + + } else { + +#ifdef CANVAS_DEBUG + if (DEBUG_ENABLED(PBD::DEBUG::CanvasRender)) { + cerr << string_compose ("%1skip render of %2 %3, no intersection between %4 and %5\n", _canvas->render_indent(), (*i)->whatami(), + (*i)->name, item, area); + } +#endif + + } + } + + --render_depth; +} + +void +Item::add_child_bounding_boxes() const +{ + boost::optional self; + Rect bbox; + bool have_one = false; + + if (_bounding_box) { + bbox = _bounding_box.get(); + have_one = true; + } + + for (list::const_iterator i = _items.begin(); i != _items.end(); ++i) { + + if (!(*i)->visible()) { + continue; + } + + boost::optional item_bbox = (*i)->bounding_box (); + + if (!item_bbox) { + continue; + } + + Rect group_bbox = (*i)->item_to_parent (item_bbox.get ()); + if (have_one) { + bbox = bbox.extend (group_bbox); + } else { + bbox = group_bbox; + have_one = true; + } + } + + if (!have_one) { + _bounding_box = boost::optional (); + } else { + _bounding_box = bbox; + } +} + +void +Item::add (Item* i) +{ + /* XXX should really notify canvas about this */ + + _items.push_back (i); + i->reparent (this); + invalidate_lut (); + _bounding_box_dirty = true; +} + +void +Item::remove (Item* i) +{ + + if (i->parent() != this) { + return; + } + + /* we cannot call bounding_box() here because that will iterate over + _items, one of which (the argument, i) may be in the middle of + deletion, making it impossible to call compute_bounding_box() + on it. + */ + + if (_bounding_box) { + _pre_change_bounding_box = _bounding_box; + } else { + _pre_change_bounding_box = Rect(); + } + + i->unparent (); + _items.remove (i); + invalidate_lut (); + _bounding_box_dirty = true; + + end_change (); +} + +void +Item::clear (bool with_delete) +{ + begin_change (); + + clear_items (with_delete); + + invalidate_lut (); + _bounding_box_dirty = true; + + end_change (); +} + +void +Item::clear_items (bool with_delete) +{ + for (list::iterator i = _items.begin(); i != _items.end(); ) { + + list::iterator tmp = i; + Item *item = *i; + + ++tmp; + + /* remove from list before doing anything else, because we + * don't want to find the item in _items during any activity + * driven by unparent-ing or deletion. + */ + + _items.erase (i); + item->unparent (); + + if (with_delete) { + delete item; + } + + i = tmp; + } +} + +void +Item::raise_child_to_top (Item* i) +{ + if (!_items.empty()) { + if (_items.back() == i) { + return; + } + } + + _items.remove (i); + _items.push_back (i); + + invalidate_lut (); + redraw (); +} + +void +Item::raise_child (Item* i, int levels) +{ + list::iterator j = find (_items.begin(), _items.end(), i); + assert (j != _items.end ()); + + ++j; + _items.remove (i); + + while (levels > 0 && j != _items.end ()) { + ++j; + --levels; + } + + _items.insert (j, i); + invalidate_lut (); + redraw (); +} + +void +Item::lower_child_to_bottom (Item* i) +{ + if (!_items.empty()) { + if (_items.front() == i) { + return; + } + } + _items.remove (i); + _items.push_front (i); + invalidate_lut (); + redraw (); +} + +void +Item::ensure_lut () const +{ + if (!_lut) { + _lut = new DumbLookupTable (*this); + } +} + +void +Item::invalidate_lut () const +{ + delete _lut; + _lut = 0; +} + +void +Item::child_changed () +{ + invalidate_lut (); + _bounding_box_dirty = true; + + if (_parent) { + _parent->child_changed (); + } +} + +void +Item::add_items_at_point (Duple const point, vector& items) const +{ + boost::optional const bbox = bounding_box (); + + /* Point is in window coordinate system */ + + if (!bbox || !item_to_window (bbox.get()).contains (point)) { + return; + } + + /* recurse and add any items within our group that contain point. + Our children are only considered visible if we are, and similarly + only if we do not ignore events. + */ + + vector our_items; + + if (!_items.empty() && visible() && !_ignore_events) { + ensure_lut (); + our_items = _lut->items_at_point (point); + } + + if (!our_items.empty() || covers (point)) { + /* this adds this item itself to the list of items at point */ + items.push_back (this); + } + + for (vector::iterator i = our_items.begin(); i != our_items.end(); ++i) { + (*i)->add_items_at_point (point, items); + } +} + +void +Item::set_tooltip (const std::string& s) +{ + _tooltip = s; +} + +void +Item::start_tooltip_timeout () +{ + if (!_tooltip.empty()) { + _canvas->start_tooltip_timeout (this); + } +} + +void +Item::stop_tooltip_timeout () +{ + _canvas->stop_tooltip_timeout (); +} + +void +Item::dump (ostream& o) const +{ + boost::optional bb = bounding_box(); + + o << _canvas->indent() << whatami() << ' ' << this << " self-Visible ? " << self_visible() << " visible ? " << visible(); + o << " @ " << position(); + +#ifdef CANVAS_DEBUG + if (!name.empty()) { + o << ' ' << name; + } +#endif + + if (bb) { + o << endl << _canvas->indent() << "\tbbox: " << bb.get(); + o << endl << _canvas->indent() << "\tCANVAS bbox: " << item_to_canvas (bb.get()); + } else { + o << " bbox unset"; + } + + o << endl; + + if (!_items.empty()) { + +#ifdef CANVAS_DEBUG + o << _canvas->indent(); + o << " @ " << position(); + o << " Items: " << _items.size(); + o << " Self-Visible ? " << self_visible(); + o << " Visible ? " << visible(); + + boost::optional bb = bounding_box(); + + if (bb) { + o << endl << _canvas->indent() << " bbox: " << bb.get(); + o << endl << _canvas->indent() << " CANVAS bbox: " << item_to_canvas (bb.get()); + } else { + o << " bbox unset"; + } + + o << endl; +#endif + + ArdourCanvas::dump_depth++; + + for (list::const_iterator i = _items.begin(); i != _items.end(); ++i) { + o << **i; + } + + ArdourCanvas::dump_depth--; + } +} + ostream& ArdourCanvas::operator<< (ostream& o, const Item& i) {