/* === S Y N F I G ========================================================= */
/*! \file zoomdial.cpp
** \brief Zoom widget
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2016 caryoscelus
**
** 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 <ETL/stringf>
#include <synfig/general.h>
#include "zoomdial.h"
#include <gtkmm/image.h>
#include <gtkmm/stock.h>
#include <gui/localization.h>
#endif
/* === U S I N G =========================================================== */
using namespace std;
using namespace synfig;
using namespace studio;
/* === M A C R O S ========================================================= */
/* === G L O B A L S ======================================================= */
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
ZoomDial::ZoomDial(Gtk::IconSize & size):
Table(5, 1, false)
{
zoom_in = create_icon(size, Gtk::Stock::ZOOM_IN, _("Zoom In"));
zoom_out = create_icon(size, Gtk::Stock::ZOOM_OUT, _("Zoom Out"));
zoom_fit = create_icon(size, Gtk::Stock::ZOOM_FIT, _("Zoom to Fit"));
zoom_norm = create_icon(size, Gtk::Stock::ZOOM_100, _("Zoom to 100%"));
current_zoom = manage(new Gtk::Entry());
set_zoom(1.0);
current_zoom->set_max_length(10);
current_zoom->set_editable(true);
current_zoom->set_width_chars(6);
current_zoom->add_events(Gdk::SCROLL_MASK);
current_zoom->signal_event().connect(
sigc::mem_fun(*this, &ZoomDial::current_zoom_event) );
current_zoom->show();
// select everything except for % sign after user clicks widget
// using release event here instead of grab_focus because the latter
// is emitted before gtk sets cursor selection gets nullified
current_zoom->signal_event_after().connect(
sigc::mem_fun(*this, &ZoomDial::after_event) );
attach(*zoom_out, 0, 1, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
attach(*current_zoom, 1, 2, 0, 1, Gtk::SHRINK, Gtk::SHRINK|Gtk::FILL, 0, 0);
attach(*zoom_in, 2, 3, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
attach(*zoom_norm, 3, 4, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
attach(*zoom_fit, 4, 5, 0, 1, Gtk::SHRINK, Gtk::SHRINK, 0, 0);
}
void
ZoomDial::after_event(GdkEvent *event)
{
if (event->type == GDK_BUTTON_RELEASE)
current_zoom->select_region(0, current_zoom->get_text_length()-1);
}
bool
ZoomDial::current_zoom_event(GdkEvent* event)
{
if (event->type == GDK_SCROLL)
{
if(event->scroll.direction==GDK_SCROLL_DOWN || event->scroll.direction==GDK_SCROLL_LEFT)
zoom_out->clicked();
else
if(event->scroll.direction==GDK_SCROLL_UP || event->scroll.direction==GDK_SCROLL_RIGHT)
zoom_in->clicked();
return true;
}
return false;
}
Gtk::Button *
ZoomDial::create_icon(Gtk::IconSize size, const Gtk::BuiltinStockID & stockid,
const char * tooltip)
{
Gtk::Button *button = manage(new class Gtk::Button());
Gtk::Image *icon = manage(new Gtk::Image(stockid, size));
button->add(*icon);
button->set_tooltip_text(tooltip);
icon->set_padding(0, 0);
icon->show();
button->set_relief(Gtk::RELIEF_NONE);
button->show();
return button;
}
void
ZoomDial::set_zoom(synfig::Real value)
{
current_zoom->set_text(etl::strprintf("%.1lf%%", value*100.0));
}
synfig::Real
ZoomDial::get_zoom(synfig::Real default_value)
{
std::string s = current_zoom->get_text();
char buffer[10] = "";
synfig::Real value = 0.0;
sscanf(s.c_str(), "%lf%9s", &value, buffer);
if (std::string(buffer) == "%") value *= 0.01;
return approximate_greater(value, 0.0) ? value : default_value;
}