diff options
Diffstat (limited to 'gtk2_ardour/ardour_gauge.cc')
| -rw-r--r-- | gtk2_ardour/ardour_gauge.cc | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/gtk2_ardour/ardour_gauge.cc b/gtk2_ardour/ardour_gauge.cc new file mode 100644 index 0000000000..db9728662e --- /dev/null +++ b/gtk2_ardour/ardour_gauge.cc @@ -0,0 +1,126 @@ +/* + * Copyright (C) 2017 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. + */ + +#include "gtkmm2ext/utils.h" +#include "widgets/tooltips.h" + +#include "ardour_gauge.h" +#include "ui_config.h" + +#define PADDING 3 + +ArdourGauge::ArdourGauge (std::string const& max_text) +{ + _layout = Pango::Layout::create (get_pango_context ()); + _layout->set_text (max_text); +} + +ArdourGauge::~ArdourGauge () +{ +} + +void +ArdourGauge::on_size_request (Gtk::Requisition* req) +{ + req->width = req->height = 0; + CairoWidget::on_size_request (req); + + int w, h; + _layout->get_pixel_size (w, h); + + req->width = std::max (req->width, std::max (12, h + PADDING)); + req->height = std::max (req->height, 20 /*std::max (20, w + PADDING) */); +} + +void +ArdourGauge::update () +{ + queue_draw (); + ArdourWidgets::set_tooltip (*this, tooltip_text ()); +} + +void +ArdourGauge::update (std::string const& txt) +{ + _layout->set_text (txt); + update (); +} + +void +ArdourGauge::render (Cairo::RefPtr<Cairo::Context> const& ctx, cairo_rectangle_t*) +{ + cairo_t* cr = ctx->cobj (); + Gtkmm2ext::Color base = UIConfiguration::instance ().color ("ruler base"); + Gtkmm2ext::Color text = UIConfiguration::instance ().color ("ruler text"); + + const int width = get_width (); + const int height = get_height (); + + Gtkmm2ext::rounded_rectangle (cr, 0, 0, width, height, PADDING + 1); + Gtkmm2ext::set_source_rgba (cr, base); + cairo_fill (cr); + + if (alert ()) { + Gtkmm2ext::rounded_rectangle (cr, 1, 1, width - 2, height - 2, PADDING + 1); + cairo_set_source_rgba (cr, 0.5, 0, 0, 1.0); + cairo_fill (cr); + } + + Gtkmm2ext::rounded_rectangle (cr, PADDING, PADDING, width - PADDING - PADDING, height - PADDING - PADDING, PADDING + 1); + cairo_clip (cr); + + const float lvl = level (); + + int bh = (height - PADDING - PADDING) * lvl; + cairo_rectangle (cr, PADDING, height - PADDING - bh, width - PADDING, bh); + + switch (indicator ()) { + case Level_OK: + cairo_set_source_rgba (cr, 0, .5, 0, 1.0); + break; + case Level_WARN: + cairo_set_source_rgba (cr, .7, .6, 0, 1.0); + break; + case Level_CRIT: + cairo_set_source_rgba (cr, .9, 0, 0, 1.0); + break; + } + cairo_fill (cr); + + int w, h; + _layout->get_pixel_size (w, h); + + cairo_save (cr); + cairo_new_path (cr); + cairo_translate (cr, width * .5, height * .5); + cairo_rotate (cr, M_PI * -.5); + + cairo_move_to (cr, w * -.5, h * -.5); + pango_cairo_update_layout (cr, _layout->gobj()); + Gtkmm2ext::set_source_rgb_a (cr, base, 0.5); + pango_cairo_layout_path (cr, _layout->gobj()); + cairo_set_line_width (cr, 1.5); + cairo_stroke (cr); + + cairo_move_to (cr, w * -.5, h * -.5); + pango_cairo_update_layout (cr, _layout->gobj()); + Gtkmm2ext::set_source_rgba (cr, text); + pango_cairo_show_layout (cr, _layout->gobj()); + + cairo_restore (cr); +} |