+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file state_zoom.cpp
-** \brief Zoom Tool Implementation File
-**
-** $Id$
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-** Copyright (c) 2008 Chris Moore
-**
-** 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 "toolbox.h"
-#include <synfigapp/main.h>
-
-#include "general.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_;
-
-public:
-
- //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);
-
- //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();}
-
- //void zoom(const Point& p1, const Point& p2);
-
-}; // END of class StateZoom_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));
-}
-
-StateZoom::~StateZoom()
-{
-}
-
-StateZoom_Context::StateZoom_Context(CanvasView* canvas_view):
- canvas_view_(canvas_view),
- is_working(*canvas_view),
- prev_workarea_layer_status_(get_work_area()->get_allow_layer_clicks())
-{
- // Turn off layer clicking
- get_work_area()->set_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();
-
- // Disable the time bar
- //get_canvas_view()->set_sensitive_timebar(false);
-
- // 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();
-}
-
-StateZoom_Context::~StateZoom_Context()
-{
- // Restore layer clicking
- get_work_area()->set_allow_layer_clicks(prev_workarea_layer_status_);
- get_canvas_view()->work_area->reset_cursor();
-
- // Enable the time bar
- //get_canvas_view()->set_sensitive_timebar(true);
-
- // 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)
- {
- Point tl = get_work_area()->get_window_tl();
- Point br = get_work_area()->get_window_br();
- Vector window_span = br - tl, window_middle = (br+tl)/2;
- Vector box_span = event.p2 - event.p1, box_middle = (event.p1+event.p2)/2;
- Point newpos;
- float zoom;
-
- if(event.modifier & Gdk::CONTROL_MASK) //zoom out...
- {
- if (window_span[0] == 0 || window_span[1] == 0) zoom = 1;
- else zoom = max(abs(box_span[0]/window_span[0]), abs(box_span[1]/window_span[1]));
-
- // focus_point is -1 times the real position for some reason...
- // center the window so the old contents fill the drawn box
- newpos = -((window_middle - box_middle)/zoom + window_middle);
- }
- else // zoom in
- {
- if (box_span[0] == 0 || box_span[1] == 0) zoom = 1;
- else zoom = min(abs(window_span[0]/box_span[0]), abs(window_span[1]/box_span[1]));
-
- // center the window at the center of the box
- newpos = -(-get_work_area()->get_focus_point() + (box_middle - window_middle));
- }
-
- get_work_area()->set_focus_point(newpos);
- get_work_area()->set_zoom(get_work_area()->get_zoom()*zoom);
-
- 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