127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
/*
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* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "gtkmm2ext/utils.h"
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#include "widgets/tooltips.h"
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#include "ardour_gauge.h"
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#include "ui_config.h"
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#define PADDING 3
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ArdourGauge::ArdourGauge (std::string const& max_text)
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{
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_layout = Pango::Layout::create (get_pango_context ());
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_layout->set_text (max_text);
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}
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ArdourGauge::~ArdourGauge ()
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{
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}
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void
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ArdourGauge::on_size_request (Gtk::Requisition* req)
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{
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req->width = req->height = 0;
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CairoWidget::on_size_request (req);
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int w, h;
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_layout->get_pixel_size (w, h);
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req->width = std::max (req->width, std::max (12, h + PADDING));
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req->height = std::max (req->height, 20 /*std::max (20, w + PADDING) */);
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}
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void
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ArdourGauge::update ()
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{
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queue_draw ();
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ArdourWidgets::set_tooltip (*this, tooltip_text ());
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}
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void
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ArdourGauge::update (std::string const& txt)
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{
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_layout->set_text (txt);
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update ();
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}
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void
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ArdourGauge::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*)
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{
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cairo_t* cr = ctx->cobj ();
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Gtkmm2ext::Color base = UIConfiguration::instance ().color ("ruler base");
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Gtkmm2ext::Color text = UIConfiguration::instance ().color ("ruler text");
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const int width = get_width ();
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const int height = get_height ();
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Gtkmm2ext::rounded_rectangle (cr, 0, 0, width, height, PADDING + 1);
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Gtkmm2ext::set_source_rgba (cr, base);
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cairo_fill (cr);
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if (alert ()) {
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Gtkmm2ext::rounded_rectangle (cr, 1, 1, width - 2, height - 2, PADDING + 1);
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cairo_set_source_rgba (cr, 0.5, 0, 0, 1.0);
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cairo_fill (cr);
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}
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Gtkmm2ext::rounded_rectangle (cr, PADDING, PADDING, width - PADDING - PADDING, height - PADDING - PADDING, PADDING + 1);
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cairo_clip (cr);
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const float lvl = level ();
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int bh = (height - PADDING - PADDING) * lvl;
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cairo_rectangle (cr, PADDING, height - PADDING - bh, width - PADDING, bh);
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switch (indicator ()) {
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case Level_OK:
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cairo_set_source_rgba (cr, 0, .5, 0, 1.0);
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break;
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case Level_WARN:
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cairo_set_source_rgba (cr, .7, .6, 0, 1.0);
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break;
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case Level_CRIT:
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cairo_set_source_rgba (cr, .9, 0, 0, 1.0);
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break;
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}
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cairo_fill (cr);
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int w, h;
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_layout->get_pixel_size (w, h);
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cairo_save (cr);
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cairo_new_path (cr);
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cairo_translate (cr, width * .5, height * .5);
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cairo_rotate (cr, M_PI * -.5);
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cairo_move_to (cr, w * -.5, h * -.5);
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pango_cairo_update_layout (cr, _layout->gobj());
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Gtkmm2ext::set_source_rgb_a (cr, base, 0.5);
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pango_cairo_layout_path (cr, _layout->gobj());
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cairo_set_line_width (cr, 1.5);
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cairo_stroke (cr);
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cairo_move_to (cr, w * -.5, h * -.5);
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pango_cairo_update_layout (cr, _layout->gobj());
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Gtkmm2ext::set_source_rgba (cr, text);
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pango_cairo_show_layout (cr, _layout->gobj());
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cairo_restore (cr);
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}
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