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Diffstat (limited to 'src/btop_input.cpp')
| -rw-r--r-- | src/btop_input.cpp | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/btop_input.cpp b/src/btop_input.cpp new file mode 100644 index 0000000..eb13516 --- /dev/null +++ b/src/btop_input.cpp @@ -0,0 +1,114 @@ +/* Copyright 2021 Aristocratos (jakob@qvantnet.com) + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. + +indent = tab +tab-size = 4 +*/ + +#include <string> +#include <robin_hood.h> +#include <iostream> + +#include <btop_input.hpp> +#include <btop_tools.hpp> + +using std::string, robin_hood::unordered_flat_map, std::cin; +using namespace Tools; + +/* The input functions relies on the following std::cin options being set: + cin.sync_with_stdio(false); + cin.tie(NULL); + These will automatically be set when running Term::init() from btop_tools.cpp +*/ + +//* Functions and variables for handling keyboard and mouse input +namespace Input { + namespace { + //* Map for translating key codes to readable values + const unordered_flat_map<string, string> Key_escapes = { + {"\033", "escape"}, + {"\n", "enter"}, + {" ", "space"}, + {"\x7f", "backspace"}, + {"\x08", "backspace"}, + {"[A", "up"}, + {"OA", "up"}, + {"[B", "down"}, + {"OB", "down"}, + {"[D", "left"}, + {"OD", "left"}, + {"[C", "right"}, + {"OC", "right"}, + {"[2~", "insert"}, + {"[3~", "delete"}, + {"[H", "home"}, + {"[F", "end"}, + {"[5~", "page_up"}, + {"[6~", "page_down"}, + {"\t", "tab"}, + {"[Z", "shift_tab"}, + {"OP", "f1"}, + {"OQ", "f2"}, + {"OR", "f3"}, + {"OS", "f4"}, + {"[15~", "f5"}, + {"[17~", "f6"}, + {"[18~", "f7"}, + {"[19~", "f8"}, + {"[20~", "f9"}, + {"[21~", "f10"}, + {"[23~", "f11"}, + {"[24~", "f12"} + }; + } + + //* Last entered key + string last = ""; + + //* Poll keyboard & mouse input for <timeout> ms and return input availabilty as a bool + bool poll(int timeout){ + if (timeout < 1) return cin.rdbuf()->in_avail() > 0; + while (timeout > 0) { + if (cin.rdbuf()->in_avail() > 0) return true; + sleep_ms(timeout < 10 ? timeout : 10); + timeout -= 10; + } + return false; + } + + //* Get a key or mouse action from input + string get(bool clear){ + string key; + while (cin.rdbuf()->in_avail() > 0 && key.size() < 100) key += cin.get(); + if (!clear && !key.empty()){ + if (key.substr(0,2) == Fx::e) key.erase(0, 1); + if (Key_escapes.contains(key)) key = Key_escapes.at(key); + else if (ulen(key) > 1) key = ""; + last = key; + } + return key; + } + + //* Wait until input is available + void wait(bool clear){ + while (cin.rdbuf()->in_avail() < 1) sleep_ms(10); + if (clear) get(clear); + } + + //* Clears last entered key + void clear(){ + last.clear(); + } + +}
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