--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file state_zoom.cpp
+** \brief Zoom Toole Implementation File
+**
+** $Id: state_zoom.cpp,v 1.1.1.1 2005/01/07 03:34:37 darco Exp $
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+** General Public License for more details.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+# include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sigc++/signal.h>
+#include <sigc++/object.h>
+
+#include <ETL/handle>
+#include <synfig/vector.h>
+
+
+#include "state_zoom.h"
+#include "event_mouse.h"
+#include "canvasview.h"
+#include "workarea.h"
+#include "app.h"
+#include "dialog_tooloptions.h"
+#include "toolbox.h"
+#include <synfigapp/main.h>
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+using namespace studio;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+StateZoom studio::state_zoom;
+
+const float ZOOMFACTOR = 1.25f;
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+class studio::StateZoom_Context : public sigc::trackable
+{
+ etl::handle<CanvasView> canvas_view_;
+ CanvasView::IsWorking is_working;
+
+ Point p1,p2;
+
+ bool prev_workarea_layer_status_;
+
+ //Toolbox settings
+ synfigapp::Settings& settings;
+
+ //Toolbox display
+ Gtk::Table options_table;
+
+public:
+
+ void refresh_tool_options(); //to refresh the toolbox
+
+ //events
+ Smach::event_result event_stop_handler(const Smach::event& x);
+ Smach::event_result event_refresh_handler(const Smach::event& x);
+ Smach::event_result event_mouse_click_handler(const Smach::event& x);
+ Smach::event_result event_refresh_tool_options(const Smach::event& x);
+
+ //constructor destructor
+ StateZoom_Context(CanvasView* canvas_view);
+ ~StateZoom_Context();
+
+ //Canvas interaction
+ const etl::handle<CanvasView>& get_canvas_view()const{return canvas_view_;}
+ etl::handle<synfigapp::CanvasInterface> get_canvas_interface()const{return canvas_view_->canvas_interface();}
+ synfig::Canvas::Handle get_canvas()const{return canvas_view_->get_canvas();}
+ WorkArea * get_work_area()const{return canvas_view_->get_work_area();}
+
+ //Modifying settings etc.
+ void load_settings();
+ void save_settings();
+ void reset();
+
+ //void zoom(const Point& p1, const Point& p2);
+
+}; // END of class StateGradient_Context
+
+/* === M E T H O D S ======================================================= */
+
+StateZoom::StateZoom():
+ Smach::state<StateZoom_Context>("zoom")
+{
+ insert(event_def(EVENT_STOP,&StateZoom_Context::event_stop_handler));
+ insert(event_def(EVENT_REFRESH,&StateZoom_Context::event_refresh_handler));
+ insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DOWN,&StateZoom_Context::event_mouse_click_handler));
+ //insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_DRAG,&StateZoom_Context::event_mouse_click_handler));
+ insert(event_def(EVENT_WORKAREA_BOX,&StateZoom_Context::event_mouse_click_handler));
+ //insert(event_def(EVENT_WORKAREA_BUTTON_CLICK,&StateZoom_Context::event_mouse_click_handler));
+ insert(event_def(EVENT_WORKAREA_MOUSE_BUTTON_UP,&StateZoom_Context::event_mouse_click_handler));
+ insert(event_def(EVENT_REFRESH_TOOL_OPTIONS,&StateZoom_Context::event_refresh_tool_options));
+}
+
+StateZoom::~StateZoom()
+{
+}
+
+void
+StateZoom_Context::load_settings()
+{
+ String value;
+
+ //parse the arguments yargh!
+ /*if(settings.get_value("circle.feather",value))
+ set_feather(atof(value.c_str()));
+ else
+ set_feather(0);*/
+}
+
+void
+StateZoom_Context::save_settings()
+{
+ //settings.set_value("circle.fallofftype",strprintf("%d",get_falloff()));
+}
+
+void
+StateZoom_Context::reset()
+{
+ //refresh_ducks();
+}
+
+StateZoom_Context::StateZoom_Context(CanvasView* canvas_view):
+ canvas_view_(canvas_view),
+ is_working(*canvas_view),
+ prev_workarea_layer_status_(get_work_area()->allow_layer_clicks),
+ settings(synfigapp::Main::get_selected_input_device()->settings())
+{
+ // Set up the tool options dialog
+ //options_table.attach(*manage(new Gtk::Label(_("Zoom Tool"))), 0, 2, 0, 1, Gtk::EXPAND|Gtk::FILL, Gtk::EXPAND|Gtk::FILL, 0, 0);
+
+ load_settings();
+
+ options_table.show_all();
+
+ refresh_tool_options();
+ App::dialog_tool_options->present();
+
+ // Turn off layer clicking
+ get_work_area()->allow_layer_clicks=false;
+
+ // clear out the ducks
+ get_work_area()->clear_ducks(); //???
+
+ // Refresh the work area
+ get_work_area()->queue_draw();
+
+ // Hide the tables if they are showing
+ //prev_table_status=get_canvas_view()->tables_are_visible();
+ //if(prev_table_status)get_canvas_view()->hide_tables();
+
+ // Hide the time bar
+ //get_canvas_view()->hide_timebar();
+
+ // Connect a signal
+ //get_work_area()->signal_user_click().connect(sigc::mem_fun(*this,&studio::StateZoom_Context::on_user_click));
+ get_canvas_view()->work_area->set_cursor(Gdk::CROSSHAIR);
+
+ App::toolbox->refresh();
+}
+
+void
+StateZoom_Context::refresh_tool_options()
+{
+ App::dialog_tool_options->clear();
+ App::dialog_tool_options->set_widget(options_table);
+ App::dialog_tool_options->set_local_name(_("Zoom Tool"));
+ App::dialog_tool_options->set_name("zoom");
+}
+
+Smach::event_result
+StateZoom_Context::event_refresh_tool_options(const Smach::event& x)
+{
+ refresh_tool_options();
+ return Smach::RESULT_ACCEPT;
+}
+
+StateZoom_Context::~StateZoom_Context()
+{
+ save_settings();
+
+ // Restore layer clicking
+ get_work_area()->allow_layer_clicks=prev_workarea_layer_status_;
+ get_canvas_view()->work_area->reset_cursor();
+
+ App::dialog_tool_options->clear();
+
+ // Show the time bar
+ if(get_canvas_view()->get_canvas()->rend_desc().get_time_start()!=get_canvas_view()->get_canvas()->rend_desc().get_time_end())
+ get_canvas_view()->show_timebar();
+
+ // Bring back the tables if they were out before
+ //if(prev_table_status)get_canvas_view()->show_tables();
+
+ // Refresh the work area
+ get_work_area()->queue_draw();
+
+ App::toolbox->refresh();
+
+ get_canvas_view()->get_smach().process_event(EVENT_REFRESH_DUCKS);
+}
+
+Smach::event_result
+StateZoom_Context::event_stop_handler(const Smach::event& x)
+{
+ throw Smach::egress_exception();
+}
+
+Smach::event_result
+StateZoom_Context::event_refresh_handler(const Smach::event& x)
+{
+ return Smach::RESULT_ACCEPT;
+}
+
+Smach::event_result
+StateZoom_Context::event_mouse_click_handler(const Smach::event& x)
+{
+ if(x.key==EVENT_WORKAREA_BOX)
+ {
+ const EventBox& event(*reinterpret_cast<const EventBox*>(&x));
+
+ if(event.button==BUTTON_LEFT)
+ {
+ //respond to event box...
+
+
+ //Center the new position at the center of the box
+
+ //OH MY GOD HACK - the space is -1* and offset (by the value of the center of the canvas)...
+ Point newpos;
+ {
+ const Point evcenter = (event.p1+event.p2)/2;
+ const Point realcenter = (get_work_area()->get_window_tl() + get_work_area()->get_window_br())/2;
+ newpos = -(evcenter - realcenter) + get_work_area()->get_focus_point();
+ }
+
+ //The zoom will be whatever the required factor to convert current box size to desired box size
+ Point tl = get_work_area()->get_window_tl();
+ Point br = get_work_area()->get_window_br();
+
+ Vector span = br - tl;
+ Vector v = event.p2 - event.p1;
+
+ //get the minimum zoom as long as it's greater than 1...
+ v[0] = abs(v[0])/abs(span[0]);
+ v[1] = abs(v[1])/abs(span[1]);
+
+ float zdiv = max(v[0],v[1]);
+ if(zdiv < 1 && zdiv > 0) //must be zoomable
+ {
+ get_work_area()->set_focus_point(newpos);
+ get_work_area()->set_zoom(get_work_area()->get_zoom()/zdiv);
+ }
+
+ return Smach::RESULT_ACCEPT;
+ }
+ }
+
+ if(x.key==EVENT_WORKAREA_MOUSE_BUTTON_UP)
+ {
+ const EventMouse& event(*reinterpret_cast<const EventMouse*>(&x));
+
+ if(event.button==BUTTON_LEFT)
+ {
+ Point evpos;
+
+ //make the event pos be in the same space...
+ // The weird ass inverted center normalized space...
+ {
+ const Point realcenter = (get_work_area()->get_window_tl() + get_work_area()->get_window_br())/2;
+ evpos = -(event.pos - realcenter) + get_work_area()->get_focus_point();
+ }
+
+ /* Zooming:
+ focus point must zoom about the point evpos...
+
+ trans about an origin not 0:
+ p' = A(p - o) + o
+ */
+
+ Vector v = get_work_area()->get_focus_point() - evpos;
+
+ if(event.modifier & Gdk::CONTROL_MASK) //zoom out...
+ {
+ v*=ZOOMFACTOR;
+ //get_work_area()->zoom_out();
+ get_work_area()->set_focus_point(evpos + v);
+ get_work_area()->set_zoom(get_work_area()->get_zoom()/ZOOMFACTOR);
+ }else //zoom in
+ {
+ v/=ZOOMFACTOR;
+ //get_work_area()->zoom_in();
+ get_work_area()->set_focus_point(evpos + v);
+ get_work_area()->set_zoom(get_work_area()->get_zoom()*ZOOMFACTOR);
+ }
+
+ return Smach::RESULT_ACCEPT;
+ }
+ }
+
+ return Smach::RESULT_OK;
+}
projects / synfig.git / blobdiff