X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-studio%2Fsrc%2Fgtkmm%2Fstate_zoom.cpp;fp=synfig-studio%2Fsrc%2Fgtkmm%2Fstate_zoom.cpp;h=57a252201f2ad596c9f84596fddc75cd93bda14c;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=0000000000000000000000000000000000000000;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git diff --git a/synfig-studio/src/gtkmm/state_zoom.cpp b/synfig-studio/src/gtkmm/state_zoom.cpp new file mode 100644 index 0000000..57a2522 --- /dev/null +++ b/synfig-studio/src/gtkmm/state_zoom.cpp @@ -0,0 +1,260 @@ +/* === 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 +#endif + +#include +#include + +#include +#include + + +#include "state_zoom.h" +#include "event_mouse.h" +#include "canvasview.h" +#include "workarea.h" +#include "app.h" +#include "toolbox.h" +#include + +#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 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& get_canvas_view()const{return canvas_view_;} + etl::handle 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("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(&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(&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; +}