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#include "volumemeter.hpp"
#include <cstring>
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<Cairo::Context> &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;
}
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