#include "volumemeter.hpp" #include VolumeMeter::VolumeMeter() : Glib::ObjectBase("volumemeter") , Gtk::Widget() { set_has_window(true); } void VolumeMeter::SetVolume(double fraction) { m_fraction = fraction; queue_draw(); } void VolumeMeter::SetTick(double fraction) { m_tick = fraction; queue_draw(); } void VolumeMeter::SetShowTick(bool show) { m_show_tick = show; } Gtk::SizeRequestMode VolumeMeter::get_request_mode_vfunc() const { return Gtk::Widget::get_request_mode_vfunc(); } void VolumeMeter::get_preferred_width_vfunc(int &minimum_width, int &natural_width) const { const int width = get_allocated_width(); minimum_width = natural_width = width; } void VolumeMeter::get_preferred_width_for_height_vfunc(int height, int &minimum_width, int &natural_width) const { get_preferred_width_vfunc(minimum_width, natural_width); } void VolumeMeter::get_preferred_height_vfunc(int &minimum_height, int &natural_height) const { // blehhh :PPP const int height = get_allocated_height(); minimum_height = natural_height = 4; } void VolumeMeter::get_preferred_height_for_width_vfunc(int width, int &minimum_height, int &natural_height) const { get_preferred_height_vfunc(minimum_height, natural_height); } void VolumeMeter::on_size_allocate(Gtk::Allocation &allocation) { set_allocation(allocation); if (m_window) m_window->move_resize(allocation.get_x(), allocation.get_y(), allocation.get_width(), allocation.get_height()); } void VolumeMeter::on_map() { Gtk::Widget::on_map(); } void VolumeMeter::on_unmap() { Gtk::Widget::on_unmap(); } void VolumeMeter::on_realize() { set_realized(true); if (!m_window) { GdkWindowAttr attributes; std::memset(&attributes, 0, sizeof(attributes)); auto allocation = get_allocation(); attributes.x = allocation.get_x(); attributes.y = allocation.get_y(); attributes.width = allocation.get_width(); attributes.height = allocation.get_height(); attributes.event_mask = get_events() | Gdk::EXPOSURE_MASK; attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; m_window = Gdk::Window::create(get_parent_window(), &attributes, GDK_WA_X | GDK_WA_Y); set_window(m_window); m_window->set_user_data(gobj()); } } void VolumeMeter::on_unrealize() { m_window.reset(); Gtk::Widget::on_unrealize(); } bool VolumeMeter::on_draw(const Cairo::RefPtr &cr) { const auto allocation = get_allocation(); const auto width = allocation.get_width(); const auto height = allocation.get_height(); const double LOW_MAX = 0.7 * width; const double MID_MAX = 0.85 * width; const double desired_width = width * m_fraction; const double draw_low = std::min(desired_width, LOW_MAX); const double draw_mid = std::min(desired_width, MID_MAX); const double draw_hi = desired_width; cr->set_source_rgb(1.0, 0.0, 0.0); cr->rectangle(0.0, 0.0, draw_hi, height); cr->fill(); cr->set_source_rgb(1.0, 0.5, 0.0); cr->rectangle(0.0, 0.0, draw_mid, height); cr->fill(); cr->set_source_rgb(.0, 1.0, 0.0); cr->rectangle(0.0, 0.0, draw_low, height); cr->fill(); if (m_show_tick) { const double tick_base = width * m_tick; cr->set_source_rgb(0.8, 0.8, 0.8); cr->rectangle(tick_base, 0, 4, height); cr->fill(); } return true; }