1 /* === S Y N F I G ========================================================= */
2 /*! \file state_zoom.cpp
3 ** \brief Zoom Toole Implementation File
5 ** $Id: state_zoom.cpp,v 1.1.1.1 2005/01/07 03:34:37 darco Exp $
8 ** Copyright (c) 2002 Robert B. Quattlebaum Jr.
10 ** This software and associated documentation
11 ** are CONFIDENTIAL and PROPRIETARY property of
12 ** the above-mentioned copyright holder.
14 ** You may not copy, print, publish, or in any
15 ** other way distribute this software without
16 ** a prior written agreement with
17 ** the copyright holder.
20 /* ========================================================================= */
22 /* === H E A D E R S ======================================================= */
31 #include <sigc++/signal.h>
32 #include <sigc++/object.h>
35 #include <synfig/vector.h>
38 #include "state_zoom.h"
39 #include "event_mouse.h"
40 #include "canvasview.h"
43 #include "dialog_tooloptions.h"
45 #include <synfigapp/main.h>
49 /* === U S I N G =========================================================== */
53 using namespace synfig;
54 using namespace studio;
56 /* === M A C R O S ========================================================= */
58 /* === G L O B A L S ======================================================= */
59 StateZoom studio::state_zoom;
61 const float ZOOMFACTOR = 1.25f;
63 /* === C L A S S E S & S T R U C T S ======================================= */
65 class studio::StateZoom_Context : public sigc::trackable
67 etl::handle<CanvasView> canvas_view_;
68 CanvasView::IsWorking is_working;
72 bool prev_workarea_layer_status_;
75 synfigapp::Settings& settings;
78 Gtk::Table options_table;
82 void refresh_tool_options(); //to refresh the toolbox
85 Smach::event_result event_stop_handler(const Smach::event& x);
86 Smach::event_result event_refresh_handler(const Smach::event& x);
87 Smach::event_result event_mouse_click_handler(const Smach::event& x);
88 Smach::event_result event_refresh_tool_options(const Smach::event& x);
90 //constructor destructor
91 StateZoom_Context(CanvasView* canvas_view);
95 const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
96 etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
97 synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
98 WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
100 //Modifying settings etc.
101 void load_settings();
102 void save_settings();
105 //void zoom(const Point& p1, const Point& p2);
107 }; // END of class StateGradient_Context
109 /* === M E T H O D S ======================================================= */
111 StateZoom::StateZoom():
112 Smach::state<StateZoom_Context>("zoom")
114 insert(event_def(EVENT_STOP,&StateZoom_Context::event_stop_handler));
115 insert(event_def(EVENT_REFRESH,&StateZoom_Context::event_refresh_handler));
116 insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateZoom_Context::event_mouse_click_handler));
117 //insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateZoom_Context::event_mouse_click_handler));
118 insert(event_def(EVENT_WORKAREA_BOX,&StateZoom_Context::event_mouse_click_handler));
119 //insert(event_def(EVENT_WORKAREA_BUTTON_CLICK,&StateZoom_Context::event_mouse_click_handler));
120 insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateZoom_Context::event_mouse_click_handler));
121 insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateZoom_Context::event_refresh_tool_options));
124 StateZoom::~StateZoom()
129 StateZoom_Context::load_settings()
133 //parse the arguments yargh!
134 /*if(settings.get_value("circle.feather",value))
135 set_feather(atof(value.c_str()));
141 StateZoom_Context::save_settings()
143 //settings.set_value("circle.fallofftype",strprintf("%d",get_falloff()));
147 StateZoom_Context::reset()
152 StateZoom_Context::StateZoom_Context(CanvasView* canvas_view):
153 canvas_view_(canvas_view),
154 is_working(*canvas_view),
155 prev_workarea_layer_status_(get_work_area()->allow_layer_clicks),
156 settings(synfigapp::Main::get_selected_input_device()->settings())
158 // Set up the tool options dialog
159 //options_table.attach(*manage(new Gtk::Label(_("Zoom Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
163 options_table.show_all();
165 refresh_tool_options();
166 App::dialog_tool_options->present();
168 // Turn off layer clicking
169 get_work_area()->allow_layer_clicks=false;
171 // clear out the ducks
172 get_work_area()->clear_ducks(); //???
174 // Refresh the work area
175 get_work_area()->queue_draw();
177 // Hide the tables if they are showing
178 //prev_table_status=get_canvas_view()->tables_are_visible();
179 //if(prev_table_status)get_canvas_view()->hide_tables();
182 //get_canvas_view()->hide_timebar();
185 //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateZoom_Context::on_user_click));
186 get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
188 App::toolbox->refresh();
192 StateZoom_Context::refresh_tool_options()
194 App::dialog_tool_options->clear();
195 App::dialog_tool_options->set_widget(options_table);
196 App::dialog_tool_options->set_local_name(_("Zoom Tool"));
197 App::dialog_tool_options->set_name("zoom");
201 StateZoom_Context::event_refresh_tool_options(const Smach::event& x)
203 refresh_tool_options();
204 return Smach::RESULT_ACCEPT;
207 StateZoom_Context::~StateZoom_Context()
211 // Restore layer clicking
212 get_work_area()->allow_layer_clicks=prev_workarea_layer_status_;
213 get_canvas_view()->work_area->reset_cursor();
215 App::dialog_tool_options->clear();
218 if(get_canvas_view()->get_canvas()->rend_desc().get_time_start()!=get_canvas_view()->get_canvas()->rend_desc().get_time_end())
219 get_canvas_view()->show_timebar();
221 // Bring back the tables if they were out before
222 //if(prev_table_status)get_canvas_view()->show_tables();
224 // Refresh the work area
225 get_work_area()->queue_draw();
227 App::toolbox->refresh();
229 get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
233 StateZoom_Context::event_stop_handler(const Smach::event& x)
235 throw Smach::egress_exception();
239 StateZoom_Context::event_refresh_handler(const Smach::event& x)
241 return Smach::RESULT_ACCEPT;
245 StateZoom_Context::event_mouse_click_handler(const Smach::event& x)
247 if(x.key==EVENT_WORKAREA_BOX)
249 const EventBox& event(*reinterpret_cast<const EventBox*>(&x));
251 if(event.button==BUTTON_LEFT)
253 //respond to event box...
256 //Center the new position at the center of the box
258 //OH MY GOD HACK - the space is -1* and offset (by the value of the center of the canvas)...
261 const Point evcenter = (event.p1+event.p2)/2;
262 const Point realcenter = (get_work_area()->get_window_tl() + get_work_area()->get_window_br())/2;
263 newpos = -(evcenter - realcenter) + get_work_area()->get_focus_point();
266 //The zoom will be whatever the required factor to convert current box size to desired box size
267 Point tl = get_work_area()->get_window_tl();
268 Point br = get_work_area()->get_window_br();
270 Vector span = br - tl;
271 Vector v = event.p2 - event.p1;
273 //get the minimum zoom as long as it's greater than 1...
274 v[0] = abs(v[0])/abs(span[0]);
275 v[1] = abs(v[1])/abs(span[1]);
277 float zdiv = max(v[0],v[1]);
278 if(zdiv < 1 && zdiv > 0) //must be zoomable
280 get_work_area()->set_focus_point(newpos);
281 get_work_area()->set_zoom(get_work_area()->get_zoom()/zdiv);
284 return Smach::RESULT_ACCEPT;
288 if(x.key==EVENT_WORKAREA_MOUSE_BUTTON_UP)
290 const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
292 if(event.button==BUTTON_LEFT)
296 //make the event pos be in the same space...
297 // The weird ass inverted center normalized space...
299 const Point realcenter = (get_work_area()->get_window_tl() + get_work_area()->get_window_br())/2;
300 evpos = -(event.pos - realcenter) + get_work_area()->get_focus_point();
304 focus point must zoom about the point evpos...
306 trans about an origin not 0:
310 Vector v = get_work_area()->get_focus_point() - evpos;
312 if(event.modifier & Gdk::CONTROL_MASK) //zoom out...
315 //get_work_area()->zoom_out();
316 get_work_area()->set_focus_point(evpos + v);
317 get_work_area()->set_zoom(get_work_area()->get_zoom()/ZOOMFACTOR);
321 //get_work_area()->zoom_in();
322 get_work_area()->set_focus_point(evpos + v);
323 get_work_area()->set_zoom(get_work_area()->get_zoom()*ZOOMFACTOR);
326 return Smach::RESULT_ACCEPT;
330 return Smach::RESULT_OK;