mirror of https://github.com/polybar/polybar.git
104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
#pragma once
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#include "common.hpp"
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#include "components/x11/connection.hpp"
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#include "utils/memory.hpp"
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LEMONBUDDY_NS
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struct backlight_values {
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uint32_t min = 0;
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uint32_t max = 0;
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uint32_t val = 0;
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};
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struct randr_output {
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xcb_randr_output_t randr_output;
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string name;
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int w = 0;
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int h = 0;
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int x = 0;
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int y = 0;
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backlight_values backlight;
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};
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using monitor_t = shared_ptr<randr_output>;
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namespace randr_util {
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/**
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* Define monitor
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*/
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inline monitor_t make_monitor(xcb_randr_output_t randr, string name, int w, int h, int x, int y) {
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monitor_t mon{new monitor_t::element_type{}};
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mon->randr_output = randr;
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mon->name = name;
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mon->x = x;
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mon->y = y;
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mon->h = h;
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mon->w = w;
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return mon;
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}
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/**
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* Create a list of all available randr outputs
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*/
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inline vector<monitor_t> get_monitors(connection& conn, xcb_window_t root) {
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vector<monitor_t> monitors;
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auto outputs = conn.get_screen_resources(root).outputs();
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for (auto it = outputs.begin(); it != outputs.end(); it++) {
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try {
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auto info = conn.get_output_info(*it);
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if (info->connection != XCB_RANDR_CONNECTION_CONNECTED)
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continue;
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auto crtc = conn.get_crtc_info(info->crtc);
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string name{info.name().begin(), info.name().end()};
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monitors.emplace_back(make_monitor(*it, name, crtc->width, crtc->height, crtc->x, crtc->y));
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} catch (const xpp::randr::error::bad_crtc&) {
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} catch (const xpp::randr::error::bad_output&) {
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}
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}
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// use the same sort algo as lemonbar, to match the defaults
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sort(monitors.begin(), monitors.end(), [](monitor_t& m1, monitor_t& m2) -> bool {
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if (m1->x < m2->x || m1->y + m1->h <= m2->y)
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return 1;
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if (m1->x > m2->x || m1->y + m1->h > m2->y)
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return -1;
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return 0;
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});
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return monitors;
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}
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inline void get_backlight_range(connection& conn, const monitor_t& mon, backlight_values& dst) {
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auto reply = conn.query_output_property(mon->randr_output, Backlight);
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dst.min = 0;
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dst.max = 0;
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if (!reply->range || reply->length != 2)
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reply = conn.query_output_property(mon->randr_output, BACKLIGHT);
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if (!reply->range || reply->length != 2)
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return;
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auto range = reply.valid_values().begin();
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dst.min = static_cast<uint32_t>(*range++);
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dst.max = static_cast<uint32_t>(*range);
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}
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inline void get_backlight_value(connection& conn, const monitor_t& mon, backlight_values& dst) {
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auto reply = conn.get_output_property(mon->randr_output, Backlight, XCB_ATOM_NONE, 0, 4, 0, 0);
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if (reply->num_items != 1 || reply->format != 32 || reply->type != XCB_ATOM_INTEGER)
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reply = conn.get_output_property(mon->randr_output, BACKLIGHT, XCB_ATOM_NONE, 0, 4, 0, 0);
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if (reply->num_items == 1 && reply->format == 32 && reply->type == XCB_ATOM_INTEGER)
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dst.val = *reinterpret_cast<uint32_t*>(xcb_randr_get_output_property_data(reply.get().get()));
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else
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dst.val = 0;
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}
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}
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LEMONBUDDY_NS_END
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