git.sesse.net Git - nageru/blob - mainwindow.cpp

   1 #include "mainwindow.h"
   2
   3 #include <math.h>
   4 #include <stdio.h>
   5 #include <algorithm>
   6 #include <string>
   7 #include <vector>
   8 #include <QBoxLayout>
   9 #include <QKeySequence>
  10 #include <QLabel>
  11 #include <QMetaType>
  12 #include <QPushButton>
  13 #include <QResizeEvent>
  14 #include <QShortcut>
  15 #include <QSignalMapper>
  16 #include <QSize>
  17 #include <QString>
  18
  19 #include "glwidget.h"
  20 #include "lrameter.h"
  21 #include "mixer.h"
  22 #include "ui_mainwindow.h"
  23 #include "vumeter.h"
  24
  25 class QResizeEvent;
  26
  27 using namespace std;
  28
  29 Q_DECLARE_METATYPE(std::vector<std::string>);
  30
  31 MainWindow *global_mainwindow = nullptr;
  32
  33 MainWindow::MainWindow()
  34         : ui(new Ui::MainWindow)
  35 {
  36         global_mainwindow = this;
  37         ui->setupUi(this);
  38
  39         ui->me_live->set_output(Mixer::OUTPUT_LIVE);
  40         ui->me_preview->set_output(Mixer::OUTPUT_PREVIEW);
  41
  42         // Hook up the transition buttons.
  43         // TODO: Make them dynamic.
  44         {
  45                 QSignalMapper *mapper = new QSignalMapper(this);
  46                 mapper->setMapping(ui->transition_btn1, 0),
  47                 mapper->setMapping(ui->transition_btn2, 1);
  48                 mapper->setMapping(ui->transition_btn3, 2);
  49                 connect(ui->transition_btn1, SIGNAL(clicked()), mapper, SLOT(map()));
  50                 connect(ui->transition_btn2, SIGNAL(clicked()), mapper, SLOT(map()));
  51                 connect(ui->transition_btn3, SIGNAL(clicked()), mapper, SLOT(map()));
  52                 connect(mapper, SIGNAL(mapped(int)), this, SLOT(transition_clicked(int)));
  53         }
  54
  55         // Aiee...
  56         transition_btn1 = ui->transition_btn1;
  57         transition_btn2 = ui->transition_btn2;
  58         transition_btn3 = ui->transition_btn3;
  59         qRegisterMetaType<std::vector<std::string>>("std::vector<std::string>");
  60         connect(ui->me_preview, SIGNAL(transition_names_updated(std::vector<std::string>)),
  61                 this, SLOT(set_transition_names(std::vector<std::string>)));
  62 }
  63
  64 void MainWindow::resizeEvent(QResizeEvent* event)
  65 {
  66         QMainWindow::resizeEvent(event);
  67
  68         // Ask for a relayout, but only after the event loop is done doing relayout
  69         // on everything else.
  70         QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
  71 }
  72
  73 void MainWindow::mixer_created(Mixer *mixer)
  74 {
  75         // Make the previews.
  76         unsigned num_previews = mixer->get_num_channels();
  77         QSignalMapper *mapper = new QSignalMapper(this);
  78
  79         for (unsigned i = 0; i < num_previews; ++i) {
  80                 GLWidget *preview = new GLWidget(this);
  81                 preview->set_output(Mixer::Output(Mixer::OUTPUT_INPUT0 + i));
  82                 ui->preview_displays->insertWidget(previews.size(), preview, 1);
  83                 previews.push_back(preview);
  84
  85                 // Hook up the click.
  86                 mapper->setMapping(preview, i);
  87                 connect(preview, SIGNAL(clicked()), mapper, SLOT(map()));
  88
  89                 // Hook up the keyboard key.
  90                 QShortcut *shortcut = new QShortcut(QKeySequence(Qt::Key_1 + i), this);
  91                 mapper->setMapping(shortcut, i);
  92                 connect(shortcut, SIGNAL(activated()), mapper, SLOT(map()));
  93         }
  94
  95         connect(mapper, SIGNAL(mapped(int)), this, SLOT(channel_clicked(int)));
  96
  97         mixer->set_audio_level_callback([this](float level_lufs, float peak_db, float global_level_lufs, float range_low_lufs, float range_high_lufs){
  98                 ui->vu_meter->set_level(level_lufs);
  99                 ui->lra_meter->set_levels(global_level_lufs, range_low_lufs, range_high_lufs);
 100
 101                 char buf[256];
 102                 snprintf(buf, sizeof(buf), "%.1f", peak_db);
 103                 ui->peak_display->setText(buf);
 104                 if (peak_db > -0.1f) {  // -0.1 dBFS is EBU peak limit.
 105                         ui->peak_display->setStyleSheet("QLabel { background-color: red; color: white; }");
 106                 } else {
 107                         ui->peak_display->setStyleSheet("");
 108                 }
 109         });
 110 }
 111
 112 void MainWindow::relayout()
 113 {
 114         int width = size().width();
 115         int height = size().height();
 116
 117         // Allocate the height; the most important part is to keep the main displays
 118         // at 16:9 if at all possible.
 119         double me_width = ui->me_preview->width();
 120         double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height();
 121
 122         // TODO: Scale the widths when we need to do this.
 123         if (me_height / double(height) > 0.8) {
 124                 me_height = height * 0.8;
 125         }
 126
 127         // The previews will be constrained by the remaining height, and the width.
 128         // FIXME: spacing?
 129         double preview_height = std::min(height - me_height, (width / double(previews.size())) * 9.0 / 16.0);
 130
 131         ui->vertical_layout->setStretch(0, lrintf(me_height));
 132         ui->vertical_layout->setStretch(1, std::max<int>(1, lrintf(height - me_height - preview_height)));
 133         ui->vertical_layout->setStretch(2, lrintf(preview_height));
 134
 135         // Set the widths for the previews.
 136         double preview_width = preview_height * 16.0 / 9.0;  // FIXME: spacing?
 137
 138         for (unsigned i = 0; i < previews.size(); ++i) {
 139                 ui->preview_displays->setStretch(i, lrintf(preview_width));
 140         }
 141
 142         // The spacer.
 143         ui->preview_displays->setStretch(previews.size(), lrintf(width - previews.size() * preview_width));
 144 }
 145
 146 void MainWindow::set_transition_names(vector<string> transition_names)
 147 {
 148         if (transition_names.size() < 1) {
 149                 transition_btn1->setText(QString(""));
 150         } else {
 151                 transition_btn1->setText(QString::fromStdString(transition_names[0]));
 152         }
 153         if (transition_names.size() < 2) {
 154                 transition_btn2->setText(QString(""));
 155         } else {
 156                 transition_btn2->setText(QString::fromStdString(transition_names[1]));
 157         }
 158         if (transition_names.size() < 3) {
 159                 transition_btn3->setText(QString(""));
 160         } else {
 161                 transition_btn3->setText(QString::fromStdString(transition_names[2]));
 162         }
 163 }
 164
 165 void MainWindow::transition_clicked(int transition_number)
 166 {
 167         global_mixer->transition_clicked(transition_number);
 168 }
 169
 170 void MainWindow::channel_clicked(int channel_number)
 171 {
 172         global_mixer->channel_clicked(channel_number);
 173 }