Initial commit.
This commit is contained in:
commit
226adeaf72
26
CMakeLists.txt
Normal file
26
CMakeLists.txt
Normal file
@ -0,0 +1,26 @@
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cmake_minimum_required(VERSION 3.18)
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project(terml CXX)
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add_library(terml STATIC
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include/terml.h
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source/terml_private.h
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source/terml_windows.h
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source/terml_linux.h
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source/terml_windows.cpp
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source/terml_linux.cpp
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source/terml.cpp
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)
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set_target_properties(terml
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PROPERTIES
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CXX_STANDARD 11
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)
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target_include_directories(terml
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PUBLIC
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include
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PRIVATE
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source
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)
|
36
include/terml.h
Normal file
36
include/terml.h
Normal file
@ -0,0 +1,36 @@
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#ifndef TERML_TERML_H
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#define TERML_TERML_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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typedef void (*terml_main_callback)();
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typedef int (*terml_quit_callback)();
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typedef void (*terml_key_callback) (char code);
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int terml_init();
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int terml_deinit();
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unsigned int terml_get_width();
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unsigned int terml_get_height();
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char terml_get(unsigned int x, unsigned int y, int* foreground_color, int* background_color);
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void terml_set(unsigned int x, unsigned int y, char c, int foreground_color, int background_color);
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void terml_flush();
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void terml_set_main_callback(terml_main_callback);
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void terml_set_quit_callback(terml_quit_callback);
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void terml_set_key_callback(terml_key_callback);
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void terml_start();
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void terml_stop();
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const char* terml_get_error();
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#ifdef __cplusplus
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}
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#endif
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#endif//TERML_TERML_H
|
347
source/terml.cpp
Normal file
347
source/terml.cpp
Normal file
@ -0,0 +1,347 @@
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#include "terml_private.h"
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#ifdef _WIN32
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#include "terml_windows.h"
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#else
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#include "terml_linux.h"
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#endif
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#include <cstdio>
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#include <cstring>
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terml::terml() :
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main(nullptr),
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quit(nullptr),
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key(nullptr),
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buffer(nullptr),
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width(0),
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height(0)
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{
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printf(ALT_BUF() HIDE_CURSOR());
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fflush(stdout);
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}
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terml::~terml()
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{
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printf(REG_BUF() SHOW_CURSOR());
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fflush(stdout);
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delete[] buffer;
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}
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char terml::get(unsigned int x, unsigned int y, int* fg, int* bg) const
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{
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const unsigned int offset = x + y * width;
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if (fg)
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{
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const unsigned char r =
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(buffer[offset * CELL_SIZE + 9] - '0') +
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(buffer[offset * CELL_SIZE + 8] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 7] - '0') * 100;
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const unsigned char g =
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(buffer[offset * CELL_SIZE + 13] - '0') +
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(buffer[offset * CELL_SIZE + 12] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 11] - '0') * 100;
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const unsigned char b =
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(buffer[offset * CELL_SIZE + 17] - '0') +
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(buffer[offset * CELL_SIZE + 16] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 15] - '0') * 100;
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*fg = (r << 16) | (g << 8) | b;
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}
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if (bg)
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{
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const unsigned char r =
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(buffer[offset * CELL_SIZE + 26] - '0') +
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(buffer[offset * CELL_SIZE + 27] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 28] - '0') * 100;
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const unsigned char g =
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(buffer[offset * CELL_SIZE + 30] - '0') +
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(buffer[offset * CELL_SIZE + 31] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 32] - '0') * 100;
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const unsigned char b =
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(buffer[offset * CELL_SIZE + 34] - '0') +
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(buffer[offset * CELL_SIZE + 35] - '0') * 10 +
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(buffer[offset * CELL_SIZE + 36] - '0') * 100;
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*bg = (r << 16) | (g << 8) | b;
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}
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return buffer[offset * CELL_SIZE + CELL_SIZE - 1];
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}
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void terml::set(unsigned int x, unsigned int y, char c, int fg, int bg)
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{
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const unsigned int offset = x + y * width;
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unsigned char fgr = (fg & 0xFF0000) >> 16;
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unsigned char fgg = (fg & 0x00FF00) >> 8;
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unsigned char fgb = (fg & 0x0000FF);
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unsigned char bgr = (bg & 0xFF0000) >> 16;
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unsigned char bgg = (bg & 0x00FF00) >> 8;
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unsigned char bgb = (bg & 0x0000FF);
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for (int i = 0; i < 3; i++)
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{
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buffer[offset * CELL_SIZE + (9 - i)] = (fgr % 10) + '0';
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fgr /= 10;
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buffer[offset * CELL_SIZE + (13 - i)] = (fgg % 10) + '0';
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fgg /= 10;
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buffer[offset * CELL_SIZE + (17 - i)] = (fgb % 10) + '0';
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fgb /= 10;
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buffer[offset * CELL_SIZE + (28 - i)] = (bgr % 10) + '0';
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bgr /= 10;
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buffer[offset * CELL_SIZE + (32 - i)] = (bgg % 10) + '0';
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bgg /= 10;
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buffer[offset * CELL_SIZE + (36 - i)] = (bgb % 10) + '0';
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bgb /= 10;
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}
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buffer[offset * CELL_SIZE + CELL_SIZE - 1] = c;
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}
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void terml::flush() const
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{
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printf(CUP(1, 1));
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fflush(stdout);
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printf("%s", buffer);
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fflush(stdout);
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}
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void terml::set_main_callback(terml_main_callback callback)
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{
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main = callback;
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}
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void terml::set_quit_callback(terml_quit_callback callback)
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{
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quit = callback;
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}
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void terml::set_key_callback(terml_key_callback callback)
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{
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key = callback;
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}
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void terml::key_event(char code)
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{
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if (key)
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{
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key(code);
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}
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}
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void terml::mainloop()
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{
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should_quit = false;
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really_should_quit = false;
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const unsigned long long wait_time = timer_frequency() / 1000;
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unsigned long long last_time = timer();
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while (!really_should_quit)
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{
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unsigned long long current_time = timer();
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while (current_time >= last_time + wait_time)
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{
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main();
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process_events();
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last_time += wait_time;
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}
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if (should_quit)
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{
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if (!quit || quit())
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{
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really_should_quit = true;
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}
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else
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{
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should_quit = false;
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}
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}
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}
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}
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void terml::stop()
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{
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should_quit = true;
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}
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unsigned int terml::get_width() const
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{
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return width;
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}
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unsigned int terml::get_height() const
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{
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return height;
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}
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void terml::setup_buffer()
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{
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printf(CUP(999, 999) REPORT_CUSROR_POSITION());
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fflush(stdout);
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constexpr const unsigned int STDIN_BUFFER_SIZE = 16;
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char stdin_buffer[STDIN_BUFFER_SIZE + 1];
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read_stdin(stdin_buffer, STDIN_BUFFER_SIZE);
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stdin_buffer[STDIN_BUFFER_SIZE] = '\0';
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unsigned int new_width = width;
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unsigned int new_height = height;
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const int scanned = sscanf(stdin_buffer, CURSOR_POSITION_FORMAT(), &new_height, &new_width);
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if (scanned != 2)
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{
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throw "Failed to determine screen size.";
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}
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if (width != new_width || height != new_height)
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{
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width = new_width;
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height = new_height;
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if (buffer) { delete[] buffer; }
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buffer = new char[CELL_SIZE * width * height + 1];
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constexpr char BLANK_CELL[] = FG(255, 255, 255) CSI "48;2;000;000;000m" " ";
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for (int i = 0; i < width * height; i++)
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{
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memcpy(buffer + i * CELL_SIZE, BLANK_CELL, CELL_SIZE);
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}
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buffer[CELL_SIZE * width * height] = '\0';
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}
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}
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static terml* TERML_G;
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static const char* LAST_ERROR = nullptr;
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extern "C"
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{
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int terml_init()
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{
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try
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{
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if (!TERML_G)
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{
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#ifdef _WIN32
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TERML_G = new terml_windows;
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#else
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TERML_G = new terml_linux;
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#endif
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}
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TERML_G->set_console_settings();
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TERML_G->setup_buffer();
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return 1;
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}
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catch (const char* c)
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{
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LAST_ERROR = c;
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return 0;
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}
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}
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int terml_deinit()
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||||
{
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try
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||||
{
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||||
if (TERML_G)
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{
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TERML_G->reset_console_settings();
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delete TERML_G;
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}
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return 1;
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||||
}
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||||
catch (const char* c)
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||||
{
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||||
LAST_ERROR = c;
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||||
return 0;
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||||
}
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||||
}
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||||
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||||
unsigned int terml_get_width()
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||||
{
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||||
return TERML_G->get_width();
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||||
}
|
||||
|
||||
unsigned int terml_get_height()
|
||||
{
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||||
return TERML_G->get_height();
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||||
}
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||||
char terml_get(unsigned int x, unsigned int y, int* fg, int* bg)
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||||
{
|
||||
return TERML_G->get(x, y, fg, bg);
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||||
}
|
||||
|
||||
void terml_set(unsigned int x, unsigned int y, char c, int fg, int bg)
|
||||
{
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||||
TERML_G->set(x, y, c, fg, bg);
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||||
}
|
||||
|
||||
void terml_flush()
|
||||
{
|
||||
TERML_G->flush();
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||||
}
|
||||
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||||
void terml_set_main_callback(terml_main_callback callback)
|
||||
{
|
||||
TERML_G->set_main_callback(callback);
|
||||
}
|
||||
|
||||
void terml_set_quit_callback(terml_quit_callback callback)
|
||||
{
|
||||
TERML_G->set_quit_callback(callback);
|
||||
}
|
||||
|
||||
void terml_set_key_callback(terml_key_callback callback)
|
||||
{
|
||||
TERML_G->set_key_callback(callback);
|
||||
}
|
||||
|
||||
void terml_start()
|
||||
{
|
||||
try
|
||||
{
|
||||
TERML_G->mainloop();
|
||||
}
|
||||
catch (const char* c)
|
||||
{
|
||||
LAST_ERROR = c;
|
||||
}
|
||||
}
|
||||
|
||||
void terml_stop()
|
||||
{
|
||||
TERML_G->stop();
|
||||
}
|
||||
|
||||
const char* terml_get_error()
|
||||
{
|
||||
const char* err = LAST_ERROR;
|
||||
LAST_ERROR = nullptr;
|
||||
return err;
|
||||
}
|
||||
}
|
85
source/terml_linux.cpp
Normal file
85
source/terml_linux.cpp
Normal file
@ -0,0 +1,85 @@
|
||||
#include "terml_linux.h"
|
||||
|
||||
#ifndef _WIN32
|
||||
|
||||
#include <time.h>
|
||||
#include <errno.h>
|
||||
#include <cstdio>
|
||||
#include <poll.h>
|
||||
|
||||
void terml_linux::set_console_settings()
|
||||
{
|
||||
tcgetattr(STDIN_FILENO, &old_input_settings);
|
||||
tcgetattr(STDOUT_FILENO, &old_output_settings);
|
||||
|
||||
termios t = old_input_settings;
|
||||
t.c_lflag &= ~(ICANON | ECHO);
|
||||
|
||||
tcsetattr(STDIN_FILENO, TCSANOW, &t);
|
||||
}
|
||||
|
||||
void terml_linux::reset_console_settings()
|
||||
{
|
||||
tcsetattr(STDIN_FILENO, TCSANOW, &old_input_settings);
|
||||
tcsetattr(STDOUT_FILENO, TCSANOW, &old_output_settings);
|
||||
}
|
||||
|
||||
void terml_linux::read_stdin(char* buffer, unsigned int buffer_size)
|
||||
{
|
||||
for (int i = 0; i < buffer_size;)
|
||||
{
|
||||
char ch = getchar();
|
||||
if (i == 0 && ch != '\x1B')
|
||||
{
|
||||
key_event(ch);
|
||||
}
|
||||
else
|
||||
{
|
||||
buffer[i++] = ch;
|
||||
}
|
||||
|
||||
if (ch == 'R') { return; }
|
||||
}
|
||||
}
|
||||
|
||||
unsigned long long terml_linux::timer()
|
||||
{
|
||||
timespec spec;
|
||||
clock_gettime(CLOCK_REALTIME, &spec);
|
||||
|
||||
return timer_frequency() * spec.tv_sec + spec.tv_nsec;
|
||||
}
|
||||
|
||||
unsigned long long terml_linux::timer_frequency()
|
||||
{
|
||||
return 1000000000; // nanoseconds / second
|
||||
}
|
||||
|
||||
void terml_linux::process_events()
|
||||
{
|
||||
constexpr int BUF_SIZE = 128;
|
||||
char buf[BUF_SIZE];
|
||||
int num_read;
|
||||
|
||||
pollfd pfd;
|
||||
pfd.fd = STDIN_FILENO;
|
||||
pfd.events = POLLIN;
|
||||
pfd.revents = 0;
|
||||
|
||||
poll(&pfd, 1, 0);
|
||||
|
||||
while (pfd.revents & POLLIN)
|
||||
{
|
||||
num_read = read(STDIN_FILENO, buf, BUF_SIZE);
|
||||
for (int i = 0; i < num_read; i++)
|
||||
{
|
||||
key_event(buf[i]);
|
||||
}
|
||||
|
||||
poll(&pfd, 1, 0);
|
||||
}
|
||||
|
||||
setup_buffer();
|
||||
}
|
||||
|
||||
#endif
|
28
source/terml_linux.h
Normal file
28
source/terml_linux.h
Normal file
@ -0,0 +1,28 @@
|
||||
#ifndef TERML_TERML_LINUX_H
|
||||
#define TERML_TERML_LINUX_H
|
||||
|
||||
#include "terml_private.h"
|
||||
|
||||
#ifndef _WIN32
|
||||
|
||||
#include <termios.h>
|
||||
#include <unistd.h>
|
||||
|
||||
class terml_linux : public terml
|
||||
{
|
||||
protected:
|
||||
virtual void set_console_settings() override;
|
||||
virtual void reset_console_settings() override;
|
||||
virtual void read_stdin(char* buffer, unsigned int buffer_size) override;
|
||||
virtual unsigned long long timer() override;
|
||||
virtual unsigned long long timer_frequency() override;
|
||||
virtual void process_events() override;
|
||||
|
||||
private:
|
||||
termios old_input_settings;
|
||||
termios old_output_settings;
|
||||
};
|
||||
|
||||
#endif//_WIN32
|
||||
|
||||
#endif//TERML_TERML_LINUX_H
|
80
source/terml_private.h
Normal file
80
source/terml_private.h
Normal file
@ -0,0 +1,80 @@
|
||||
#ifndef TERML_TERML_PRIVATE_H
|
||||
#define TERML_TERML_PRIVATE_H
|
||||
|
||||
#include "terml.h"
|
||||
|
||||
#define STRINGIFY2(x) #x
|
||||
#define STRINGIFY(x) STRINGIFY2(x)
|
||||
|
||||
#define ESC "\x1B"
|
||||
#define CSI "\x1B["
|
||||
|
||||
#define ALT_BUF() CSI "?1049h"
|
||||
#define REG_BUF() CSI "?1049l"
|
||||
|
||||
#define CLEAR_SCREEN() CSI "2J"
|
||||
|
||||
#define HIDE_CURSOR() CSI "?25l"
|
||||
#define SHOW_CURSOR() CSI "?25h"
|
||||
|
||||
#define REPORT_CUSROR_POSITION() CSI "6n"
|
||||
#define CURSOR_POSITION_FORMAT() "%*1s[%u;%u"
|
||||
|
||||
#define CUP(x, y) CSI STRINGIFY(y) ";" STRINGIFY(x) "H"
|
||||
|
||||
#define FG(r, g, b) CSI "38;2;" STRINGIFY(r) ";" STRINGIFY(g) ";" STRINGIFY(b) "m"
|
||||
#define BG(r, g, b) CSI "48;2;" STRINGIFY(r) ";" STRINGIFY(g) ";" STRINGIFY(b) "m"
|
||||
|
||||
class terml
|
||||
{
|
||||
public:
|
||||
terml();
|
||||
virtual ~terml();
|
||||
|
||||
terml(const terml&) = delete;
|
||||
terml(terml&&) = delete;
|
||||
|
||||
terml& operator=(const terml&) = delete;
|
||||
terml& operator=(terml&&) = delete;
|
||||
|
||||
char get(unsigned int x, unsigned int y, int* fg, int* bg) const;
|
||||
void set(unsigned int x, unsigned int y, char c, int fg, int bg);
|
||||
void flush() const;
|
||||
|
||||
void set_main_callback(terml_main_callback);
|
||||
void set_quit_callback(terml_quit_callback);
|
||||
void set_key_callback(terml_key_callback);
|
||||
|
||||
void mainloop();
|
||||
void stop();
|
||||
|
||||
unsigned int get_width() const;
|
||||
unsigned int get_height() const;
|
||||
|
||||
void setup_buffer();
|
||||
|
||||
virtual void set_console_settings() = 0;
|
||||
virtual void reset_console_settings() = 0;
|
||||
|
||||
protected:
|
||||
virtual void read_stdin(char* buffer, unsigned int buffer_size) = 0;
|
||||
virtual unsigned long long timer() = 0;
|
||||
virtual unsigned long long timer_frequency() = 0;
|
||||
virtual void process_events() = 0;
|
||||
|
||||
void key_event(char code);
|
||||
|
||||
private:
|
||||
char* buffer;
|
||||
unsigned int width;
|
||||
unsigned int height;
|
||||
terml_main_callback main;
|
||||
terml_quit_callback quit;
|
||||
terml_key_callback key;
|
||||
bool should_quit;
|
||||
bool really_should_quit;
|
||||
|
||||
static const unsigned int CELL_SIZE = sizeof(FG(255, 255, 255) BG(255, 255, 255) " ") - 1;
|
||||
};
|
||||
|
||||
#endif//TERML_TERML_PRIVATE_H
|
100
source/terml_windows.cpp
Normal file
100
source/terml_windows.cpp
Normal file
@ -0,0 +1,100 @@
|
||||
#include "terml_windows.h"
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
void terml_windows::set_console_settings()
|
||||
{
|
||||
handle_stdin = GetStdHandle(STD_INPUT_HANDLE);
|
||||
GetConsoleMode(handle_stdin, &previous_input_mode);
|
||||
DWORD new_mode = previous_input_mode;
|
||||
new_mode &= ~ENABLE_ECHO_INPUT;
|
||||
new_mode &= ~ENABLE_LINE_INPUT;
|
||||
new_mode |= ENABLE_WINDOW_INPUT;
|
||||
new_mode |= ENABLE_VIRTUAL_TERMINAL_INPUT;
|
||||
if (!SetConsoleMode(handle_stdin, new_mode))
|
||||
{
|
||||
throw "Failed to set stdin mode";
|
||||
}
|
||||
|
||||
HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
|
||||
GetConsoleMode(handle, &previous_output_mode);
|
||||
new_mode = previous_output_mode;
|
||||
new_mode |= ENABLE_PROCESSED_OUTPUT;
|
||||
new_mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
|
||||
if (!SetConsoleMode(handle, new_mode))
|
||||
{
|
||||
throw "Failed to set stdout mode";
|
||||
}
|
||||
}
|
||||
|
||||
void terml_windows::reset_console_settings()
|
||||
{
|
||||
if (!SetConsoleMode(handle_stdin, previous_input_mode))
|
||||
{
|
||||
throw "Failed to reset stdin mode";
|
||||
}
|
||||
if (!SetConsoleMode(GetStdHandle(STD_OUTPUT_HANDLE), previous_output_mode))
|
||||
{
|
||||
throw "Failed to reset stdout mode";
|
||||
}
|
||||
}
|
||||
|
||||
void terml_windows::read_stdin(char* buffer, unsigned int buffer_size)
|
||||
{
|
||||
unsigned long unused;
|
||||
ReadConsole(handle_stdin, buffer, buffer_size, &unused, nullptr);
|
||||
}
|
||||
|
||||
unsigned long long terml_windows::timer()
|
||||
{
|
||||
LARGE_INTEGER time;
|
||||
QueryPerformanceCounter(&time);
|
||||
return time.QuadPart;
|
||||
}
|
||||
|
||||
unsigned long long terml_windows::timer_frequency()
|
||||
{
|
||||
LARGE_INTEGER frequency;
|
||||
QueryPerformanceFrequency(&frequency);
|
||||
return frequency.QuadPart;
|
||||
}
|
||||
|
||||
void terml_windows::process_events()
|
||||
{
|
||||
DWORD num_events_available = 0;
|
||||
GetNumberOfConsoleInputEvents(handle_stdin, &num_events_available);
|
||||
|
||||
DWORD num_events_read = 0;
|
||||
INPUT_RECORD input_record_buffer[128];
|
||||
while (num_events_available > 0)
|
||||
{
|
||||
ReadConsoleInput(handle_stdin, input_record_buffer, sizeof(input_record_buffer) / sizeof(*input_record_buffer), &num_events_read);
|
||||
|
||||
for (int i = 0; i < num_events_read; i++)
|
||||
{
|
||||
switch (input_record_buffer[i].EventType)
|
||||
{
|
||||
case KEY_EVENT:
|
||||
{
|
||||
KEY_EVENT_RECORD* record = &input_record_buffer[i].Event.KeyEvent;
|
||||
if (record->bKeyDown)
|
||||
{
|
||||
for (int repeat = 0; repeat < record->wRepeatCount; repeat++)
|
||||
{
|
||||
key_event(record->uChar.AsciiChar);
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case WINDOW_BUFFER_SIZE_EVENT:
|
||||
setup_buffer();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
num_events_available -= num_events_read;
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
29
source/terml_windows.h
Normal file
29
source/terml_windows.h
Normal file
@ -0,0 +1,29 @@
|
||||
#ifndef TERML_TERML_WINDOWS_H
|
||||
#define TERML_TERML_WINDOWS_H
|
||||
|
||||
#include "terml_private.h"
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
#define WIN32_LEAN_AND_MEAN
|
||||
#include <Windows.h>
|
||||
|
||||
class terml_windows : public terml
|
||||
{
|
||||
protected:
|
||||
virtual void set_console_settings() override;
|
||||
virtual void reset_console_settings() override;
|
||||
virtual void read_stdin(char* buffer, unsigned int buffer_size) override;
|
||||
virtual unsigned long long timer() override;
|
||||
virtual unsigned long long timer_frequency() override;
|
||||
virtual void process_events() override;
|
||||
|
||||
private:
|
||||
DWORD previous_input_mode;
|
||||
DWORD previous_output_mode;
|
||||
HANDLE handle_stdin;
|
||||
};
|
||||
|
||||
#endif//_WIN32
|
||||
|
||||
#endif//TERML_TERML_WINDOWS_H
|
Loading…
Reference in New Issue
Block a user