ardour/libs/widgets/widgets/ardour_spacer.h

131 lines
3.4 KiB
C++

/*
* Copyright (C) 2011 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2017-2019 Robin Gareus <robin@gareus.org>
* Copyright (C) 2018 Ben Loftis <ben@harrisonconsoles.com>
*
* This program 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 program 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _WIDGETS_ARDOUR_SPACER_H_
#define _WIDGETS_ARDOUR_SPACER_H_
#include "gtkmm2ext/cairo_widget.h"
#include "gtkmm2ext/colors.h"
#include "widgets/ui_config.h"
#include "widgets/visibility.h"
namespace ArdourWidgets {
class LIBWIDGETS_API ArdourVSpacer : public CairoWidget
{
public:
ArdourVSpacer (float r = 0.75f);
protected:
void render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*) {
float height = get_height();
float h = height * ratio;
float t = .5f * (height - h);
ctx->rectangle (0, t, 1, h);
uint32_t c = UIConfigurationBase::instance().color ("neutral:backgroundest");
Gtkmm2ext::set_source_rgba (ctx, c);
ctx->fill ();
}
void on_size_request (Gtk::Requisition* req) {
req->width = 1;
req->height = 0;
CairoWidget::on_size_request (req);
}
float ratio;
};
class LIBWIDGETS_API ArdourHSpacer : public CairoWidget
{
public:
ArdourHSpacer (float r = 0.75f);
protected:
void render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*) {
float width = get_width();
float w = width * ratio;
float t = .5f * (width - w);
ctx->rectangle (t, 0, w, 1);
uint32_t c = UIConfigurationBase::instance().color ("neutral:backgroundest");
Gtkmm2ext::set_source_rgba (ctx, c);
ctx->fill ();
}
void on_size_request (Gtk::Requisition* req) {
req->width = 0;
req->height = 1;
CairoWidget::on_size_request (req);
}
float ratio;
};
class LIBWIDGETS_API ArdourDropShadow : public CairoWidget
{
public:
enum ShadowMode {
DropShadowLongSideOnly,
DropShadowBoth,
};
ArdourDropShadow (ShadowMode m = DropShadowLongSideOnly, float a = 0.55f);
void set_mode(ShadowMode m) {mode = m;}
protected:
void render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*) {
float width = get_width();
float height = get_height();
Cairo::RefPtr<Cairo::LinearGradient> _gradient;
if ( (width>height) || mode == DropShadowBoth ) {
_gradient = Cairo::LinearGradient::create (0, 0, 0, 4);
_gradient->add_color_stop_rgba (0, 0, 0, 0, alpha);
_gradient->add_color_stop_rgba (1, 0, 0, 0, 0);
ctx->set_source (_gradient);
ctx->rectangle (0, 0, width, 4);
ctx->fill ();
}
if ( (height>width) || mode == DropShadowBoth ) {
_gradient = Cairo::LinearGradient::create (0, 0, 4, 0);
_gradient->add_color_stop_rgba (0, 0, 0, 0, alpha);
_gradient->add_color_stop_rgba (1, 0, 0, 0, 0);
ctx->set_source (_gradient);
ctx->rectangle (0, 0, 4, height);
ctx->fill ();
}
}
float alpha;
ShadowMode mode;
};
} /* end namespace */
#endif