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screen.cpp
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screen.cpp
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#include "screen.h"
using namespace std;
WINDOW *mainWindow;
int POS_FNAME_X = 2;
int POS_FNAME_Y = 8;
int POS_AUDIO_DEVICE_X;
int POS_SAMPLERATE_X;
int POS_CHANNELCOUNT_X;
int POS_STATUSBAR_Y;
int POS_AUDIOMETER_X;
int POS_AUDIOMETER_Y;
int POS_AUDIOMETER_MAXWIDTH;
int POS_AUDIOMETER_LABEL_X;
int POS_AUDIOMETER_LABEL_Y;
int POS_HDSPACE_X;
string windowTitleCache;
string audioDeviceCache;
string recordingPathCache;
long HDSpaceAvailableCache;
long fileSizeCache;
int sampleRateCache;
int channelCountCache;
bool NC_UI_IS_ENABLED;
void initCurses(string windowTitle)
{
if (NC_UI_IS_ENABLED)
{
initscr();
cbreak(); // To disable the buffering of typed characters by the TTY driver and get a character-at-a-time input
noecho(); // To suppress the automatic echoing of typed characters
curs_set(0); // Hide the cursor
mainWindow = newwin(LINES, COLS, 0, 0);
calculateWindowPositions();
/* Add the border and window title */
setBorderAndDividers();
setWindowTitle(windowTitle);
/* Draw the horizontal line above the 'status bar' */
start_color();
wrefresh(mainWindow);
}
}
void closeCurses()
{
if (NC_UI_IS_ENABLED)
{
endwin();
}
}
void calculateWindowPositions()
{
if (NC_UI_IS_ENABLED)
{
/* Stuff that goes on the status bar */
POS_STATUSBAR_Y = LINES - 2;
POS_AUDIO_DEVICE_X = 1;
POS_CHANNELCOUNT_X = COLS - 14;
POS_SAMPLERATE_X = POS_CHANNELCOUNT_X - 14;
/* Recording audio meter */
POS_AUDIOMETER_X = POS_FNAME_X;
POS_AUDIOMETER_Y = POS_FNAME_Y + 2;
POS_AUDIOMETER_MAXWIDTH = COLS - POS_AUDIOMETER_X - 15;
POS_AUDIOMETER_LABEL_X = POS_AUDIOMETER_X + POS_AUDIOMETER_MAXWIDTH + 3;
POS_AUDIOMETER_LABEL_Y = POS_AUDIOMETER_Y;
POS_HDSPACE_X = POS_AUDIO_DEVICE_X + 30;
}
}
void setWindowTitle(string windowTitle)
{
if (NC_UI_IS_ENABLED)
{
windowTitleCache = windowTitle;
string paddedWindowTitle = " " + windowTitleCache + " ";
wmove(mainWindow, 0, (COLS - paddedWindowTitle.length()) / 2);
wprintw(mainWindow, paddedWindowTitle.c_str());
}
}
void setBorderAndDividers()
{
if (NC_UI_IS_ENABLED)
{
wborder(mainWindow, 0, 0, 0, 0, 0, 0, 0, 0);
wmove(mainWindow, LINES - 3, 1);
whline(mainWindow, ACS_HLINE, COLS - 2);
wrefresh(mainWindow);
}
}
void updateRecordingToPath(string filePath)
{
if (NC_UI_IS_ENABLED)
{
recordingPathCache = filePath;
string recordingTo = "Recording to: " + filePath;
wmove(mainWindow, POS_FNAME_Y, POS_FNAME_X);
wprintw(mainWindow, recordingTo.c_str());
wmove(mainWindow, COLS, LINES);
wrefresh(mainWindow);
}
}
void updateAudioDevice(string audioDevice, int sampleRate, int channelCount)
{
if (NC_UI_IS_ENABLED)
{
/* Draw audio device name */
wmove(mainWindow, POS_STATUSBAR_Y, POS_AUDIO_DEVICE_X);
audioDeviceCache = audioDevice;
wprintw(mainWindow, audioDeviceCache.c_str());
//wrefresh(mainWindow);
/* Draw sample rate */
wmove(mainWindow, POS_STATUSBAR_Y, POS_SAMPLERATE_X);
sampleRateCache = sampleRate;
string sampleRateStr = sampleRateCache + " Hz";
wprintw(mainWindow, sampleRateStr.c_str());
/* Draw channel count */
wmove(mainWindow, POS_STATUSBAR_Y, POS_CHANNELCOUNT_X);
channelCountCache = channelCount;
string channelCountStr = to_string(channelCountCache) + " Channels";
wprintw(mainWindow, channelCountStr.c_str());
/* Draw channel meter start and end bars */
for (int channelNum = 0; channelNum < channelCount; channelNum++)
{
wmove(mainWindow, POS_AUDIOMETER_Y + channelNum, POS_AUDIOMETER_X);
wprintw(mainWindow, "| ");
wmove(mainWindow, POS_AUDIOMETER_Y + channelNum, POS_AUDIOMETER_MAXWIDTH - 2);
wprintw(mainWindow, "| ");
}
wrefresh(mainWindow);
}
}
void updateAudioMeter(int channelNum, float maxVal, float currentVal, string volumeLabel)
{
if (NC_UI_IS_ENABLED)
{
int potentialBarWidth = (POS_AUDIOMETER_MAXWIDTH - 3) * (currentVal / maxVal);
int clippedBarWidth = min(POS_AUDIOMETER_MAXWIDTH - 3, max(2, potentialBarWidth));
mvwhline(mainWindow, POS_AUDIOMETER_Y + channelNum, POS_AUDIOMETER_X + 1, '=', clippedBarWidth);
mvwhline(mainWindow, POS_AUDIOMETER_Y + channelNum, POS_AUDIO_DEVICE_X + clippedBarWidth, ' ', POS_AUDIOMETER_MAXWIDTH - clippedBarWidth - 3);
wmove(mainWindow, POS_AUDIOMETER_Y + channelNum, POS_AUDIOMETER_MAXWIDTH);
wprintw(mainWindow, volumeLabel.c_str());
wrefresh(mainWindow);
}
}
void updateHardDriveSpace(long spaceAvailBeforeGB, long fileSizeMB)
{
if (NC_UI_IS_ENABLED)
{
wmove(mainWindow, POS_STATUSBAR_Y, POS_HDSPACE_X);
HDSpaceAvailableCache = spaceAvailBeforeGB;
fileSizeCache = fileSizeMB;
string spaceStr = "Space available: " + to_string(HDSpaceAvailableCache) + " GB; Audio file size: " + to_string(fileSizeCache) + " MB";
wprintw(mainWindow, spaceStr.c_str());
wrefresh(mainWindow);
}
}
void onWindowResize()
{
if (NC_UI_IS_ENABLED)
{
int x;
int y;
getmaxyx(mainWindow, y, x);
#ifndef _WIN32
resizeterm(x, y);
#else
resize_term(x, y);
#endif
endwin();
wrefresh(mainWindow);
initscr();
cbreak(); // To disable the buffering of typed characters by the TTY driver and get a character-at-a-time input
noecho(); // To suppress the automatic echoing of typed characters
curs_set(0); // Hide the cursor
calculateWindowPositions();
setWindowTitle(windowTitleCache);
setBorderAndDividers();
updateAudioDevice(audioDeviceCache, sampleRateCache, channelCountCache);
updateHardDriveSpace(HDSpaceAvailableCache, fileSizeCache);
updateRecordingToPath(recordingPathCache);
}
}