1 /* === S Y N F I G ========================================================= */
2 /*! \file widget_keyframe_list.cpp
3 ** \brief A custom widget to manage keyframes in the timeline.
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007 Chris Moore
10 ** Copyright (c) 2009 Carlos López
12 ** This package is free software; you can redistribute it and/or
13 ** modify it under the terms of the GNU General Public License as
14 ** published by the Free Software Foundation; either version 2 of
15 ** the License, or (at your option) any later version.
17 ** This package is distributed in the hope that it will be useful,
18 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ** General Public License for more details.
23 /* ========================================================================= */
25 /* === H E A D E R S ======================================================= */
34 #include "widget_keyframe_list.h"
36 #include <gtkmm/menu.h>
37 #include <synfig/exception.h>
44 /* === U S I N G =========================================================== */
48 using namespace synfig;
49 using namespace studio;
51 /* === M A C R O S ========================================================= */
53 /* === G L O B A L S ======================================================= */
55 /* === P R O C E D U R E S ================================================= */
57 /* === M E T H O D S ======================================================= */
59 Widget_Keyframe_List::Widget_Keyframe_List():
61 adj_default(0,0,2,1/24,10/24),
64 kf_list_(&default_kf_list_)
66 set_size_request(-1,64);
67 //!This signal is called when the widget need to be redrawn
68 signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Keyframe_List::redraw));
69 //! The widget respond to mouse button press and release and to
70 //! left button motion
71 add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);
72 add_events(Gdk::BUTTON1_MOTION_MASK);
73 set_time_adjustment(&adj_default);
77 Widget_Keyframe_List::~Widget_Keyframe_List()
82 Widget_Keyframe_List::redraw(GdkEventExpose */*bleh*/)
84 if (kf_list_->empty()) return false;
85 const int h(get_height());
86 const int w(get_width());
88 //!Boundaries of the drawing area in time units.
89 synfig::Time top(adj_timescale->get_upper());
90 synfig::Time bottom(adj_timescale->get_lower());
92 //! The graphic context
93 Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(get_window()));
94 //! A rectangle that defines the drawing area.
95 Gdk::Rectangle area(0,0,w,h);
102 //! draw a background
103 gc->set_rgb_fg_color(Gdk::Color("#FF0000"));
104 get_window()->draw_rectangle(gc, true, 0, 0, w, h);
106 //!Loop all the keyframes
107 synfig::KeyframeList::iterator iter,selected_iter;
108 bool show_selected(false);
109 for(iter=kf_list_->begin();iter!=kf_list_->end();iter++)
111 //!do not draw keyframes out of the widget boundaries
112 if (iter->get_time()>top || iter->get_time()<bottom)
114 //! If the keyframe is not the selected one
115 if(*iter!=selected_kf)
117 const int x((int)((float)(iter->get_time()-bottom) * (w/(top-bottom)) ) );
118 get_style()->paint_arrow(get_window(), Gtk::STATE_NORMAL,
119 Gtk::SHADOW_OUT, area, *this, " ", Gtk::ARROW_DOWN, 1,
129 // we do this so that we can be sure that
130 // the selected keyframe is shown on top
133 const int x((int)((float)(selected_iter->get_time()-bottom) * (w/(top-bottom)) ) );
134 get_style()->paint_arrow(get_window(), Gtk::STATE_SELECTED,
135 Gtk::SHADOW_OUT, area, *this, " ", Gtk::ARROW_DOWN, 1,
144 Widget_Keyframe_List::set_kf_list(synfig::KeyframeList* x)
148 set_selected_keyframe(*kf_list_->find_next(synfig::Time::zero()));
152 Widget_Keyframe_List::set_selected_keyframe(const synfig::Keyframe &x)
155 //signal_keyframe_selected_(selected_kf);
160 Widget_Keyframe_List::perform_move_kf()
166 Widget_Keyframe_List::on_event(GdkEvent *event)
168 const int x(static_cast<int>(event->button.x));
169 const int y(static_cast<int>(event->button.y));
170 //!Boundaries of the drawing area in time units.
171 synfig::Time top(adj_timescale->get_upper());
172 synfig::Time bottom(adj_timescale->get_lower());
173 //!pos is the [0,1] relative horizontal place on the widget
174 float pos((float)x/(float)get_width());
175 if(pos<0.0f)pos=0.0f;
176 if(pos>1.0f)pos=1.0f;
177 //! The time where the event x is
178 synfig::Time t((float)(pos*(top-bottom)));
180 //Do not respond mouse events if the list is empty
181 if(!kf_list_->size())
183 synfig::info("Keyframe list empty");
187 //! here the guts of the event
190 case GDK_MOTION_NOTIFY:
194 // stick to integer frames.
197 t = floor(t*fps + 0.5)/fps;
204 case GDK_BUTTON_PRESS:
206 if(event->button.button==1)
208 synfig::info("Looking keyframe at %s", t.get_string().c_str());
209 synfig::info("Total amount of keyframes %i", kf_list_->size());
212 synfig::KeyframeList::iterator selected;
213 selected = kf_list_->find_next(t);
214 set_selected_keyframe(*selected);
224 case GDK_BUTTON_RELEASE:
225 if(editable_ && event->button.button==1)
227 // stick to integer frames.
230 t = floor(t*fps + 0.5)/fps;
232 bool stat=perform_move_kf();
233 synfig::info("Dropping keyframe at: %s", t.get_string().c_str());
245 void Widget_Keyframe_List::set_time_adjustment(Gtk::Adjustment *x)
247 //disconnect old connections
248 time_value_change.disconnect();
249 time_other_change.disconnect();
251 //connect update function to new adjustment
256 time_value_change = x->signal_value_changed().connect(sigc::mem_fun(*this,&Widget_Keyframe_List::queue_draw));
257 time_other_change = x->signal_changed().connect(sigc::mem_fun(*this,&Widget_Keyframe_List::queue_draw));
262 Widget_Keyframe_List::set_fps(float d)
267 //update everything since we need to redraw already