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/*
* Copyright (C) 2016 Robin Gareus <robin@gareus.org>
*
* 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 "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);
ctx->set_source_rgb (0, 0, 0);
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 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
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