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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
* Jon A. Cruz
* Johan B. C. Engelen
*
* Copyright (C) 2006-2008 Authors
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <gtkmm/iconinfo.h>
#include "ui/widget/imagetoggler.h"
#include "ui/icon-loader.h"
#include "ui/icon-names.h"
namespace Inkscape {
namespace UI {
namespace Widget {
ImageToggler::ImageToggler( char const* on, char const* off) :
Glib::ObjectBase(typeid(ImageToggler)),
Gtk::CellRenderer(),
_pixOnName(on),
_pixOffName(off),
_property_active(*this, "active", false),
_property_activatable(*this, "activatable", true),
_property_gossamer(*this, "gossamer", false),
_property_pixbuf_on(*this, "pixbuf_on", Glib::RefPtr<Gdk::Pixbuf>(nullptr)),
_property_pixbuf_off(*this, "pixbuf_off", Glib::RefPtr<Gdk::Pixbuf>(nullptr))
{
property_mode() = Gtk::CELL_RENDERER_MODE_ACTIVATABLE;
Gtk::IconSize::lookup(Gtk::ICON_SIZE_MENU, _size, _size);
}
void ImageToggler::get_preferred_height_vfunc(Gtk::Widget& widget, int& min_h, int& nat_h) const
{
min_h = _size + 6;
nat_h = _size + 8;
}
void ImageToggler::get_preferred_width_vfunc(Gtk::Widget& widget, int& min_w, int& nat_w) const
{
min_w = _size + 12;
nat_w = _size + 16;
}
void ImageToggler::render_vfunc( const Cairo::RefPtr<Cairo::Context>& cr,
Gtk::Widget& widget,
const Gdk::Rectangle& background_area,
const Gdk::Rectangle& cell_area,
Gtk::CellRendererState flags )
{
// Lazy/late pixbuf rendering to get access to scale factor from widget.
if(!_property_pixbuf_on.get_value()) {
int scale = widget.get_scale_factor();
_property_pixbuf_on = sp_get_icon_pixbuf(_pixOnName, _size * scale);
_property_pixbuf_off = sp_get_icon_pixbuf(_pixOffName, _size * scale);
}
// Hide when not being used.
double alpha = 1.0;
bool visible = _property_activatable.get_value()
|| _property_active.get_value();
if (!visible) {
// XXX There is conflict about this value, some users want 0.2, others want 0.0
alpha = 0.0;
}
if (_property_gossamer.get_value()) {
alpha += 0.2;
}
if (alpha <= 0.0) {
return;
}
Glib::RefPtr<Gdk::Pixbuf> pixbuf;
if(_property_active.get_value()) {
pixbuf = _property_pixbuf_on.get_value();
} else {
pixbuf = _property_pixbuf_off.get_value();
}
cairo_surface_t *surface = gdk_cairo_surface_create_from_pixbuf(
pixbuf->gobj(), 0, widget.get_window()->gobj());
g_return_if_fail(surface);
// Center the icon in the cell area
int x = cell_area.get_x() + int((cell_area.get_width() - _size) * 0.5);
int y = cell_area.get_y() + int((cell_area.get_height() - _size) * 0.5);
cairo_set_source_surface(cr->cobj(), surface, x, y);
cr->set_operator(Cairo::OPERATOR_ATOP);
cr->rectangle(x, y, _size, _size);
if (alpha < 1.0) {
cr->clip();
cr->paint_with_alpha(alpha);
} else {
cr->fill();
}
cairo_surface_destroy(surface); // free!
}
bool
ImageToggler::activate_vfunc(GdkEvent* event,
Gtk::Widget& /*widget*/,
const Glib::ustring& path,
const Gdk::Rectangle& /*background_area*/,
const Gdk::Rectangle& /*cell_area*/,
Gtk::CellRendererState /*flags*/)
{
_signal_pre_toggle.emit(event);
_signal_toggled.emit(path);
return false;
}
} // namespace Widget
} // namespace UI
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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