Add the beginnings of a very simple VU meter, based on libebur128.

[nageru] / mainwindow.cpp

diff --git a/mainwindow.cpp b/mainwindow.cpp
index 25d7a09645b02affc062186f61eeaf4298e7c9c5..29a863b2456ea568f36e014ae878df607884b753 100644 (file)
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -6,6 +6,7 @@
 #include <QSignalMapper>
 #include <QMetaType>
 #include <QShortcut>
+#include <QResizeEvent>
 
 #include "context.h"
 #include "mixer.h"
@@ -78,41 +79,50 @@ MainWindow::MainWindow()
        qRegisterMetaType<std::vector<std::string>>("std::vector<std::string>");
        connect(ui->preview1, SIGNAL(transition_names_updated(std::vector<std::string>)),
                this, SLOT(set_transition_names(std::vector<std::string>)));
+
+       global_vu_meter = ui->vu_meter;  // global_mixer does not exist yet, so need to delay the hookup.
 }
 
 void MainWindow::resizeEvent(QResizeEvent* event)
 {
        QMainWindow::resizeEvent(event);
 
+       // Ask for a relayout, but only after the event loop is done doing relayout
+       // on everything else.
+       QMetaObject::invokeMethod(this, "relayout", Qt::QueuedConnection);
+}
+
+void MainWindow::relayout()
+{
+       int width = size().width();
+       int height = size().height();
+
        // Allocate the height; the most important part is to keep the main displays
        // at 16:9 if at all possible.
-       double me_width = (width() - ui->transition_btn2->width()) / 2.0;
+       double me_width = ui->me_preview->width();
        double me_height = me_width * 9.0 / 16.0 + ui->label_preview->height();
-       double me_proportion = me_height / height();
 
        // TODO: Scale the widths when we need to do this.
-       if (me_proportion > 0.8) {
-               me_proportion = 0.8;
+       if (me_height / double(height) > 0.8) {
+               me_height = height * 0.8;
        }
 
        // The previews will be constrained by the remaining height, and the width.
-       // FIXME: spacing=
-       double preview_height = std::min(height() - me_height, (width() / 4.0) * 9.0 / 16.0);
-       double preview_proportion = preview_height / height();
+       // FIXME: spacing?
+       double preview_height = std::min(height - me_height, (width / 4.0) * 9.0 / 16.0);
 
-       ui->vertical_layout->setStretch(0, lrintf(1000 * me_proportion));
-       ui->vertical_layout->setStretch(1, lrintf(1000 * (1.0 - me_proportion - preview_proportion)));
-       ui->vertical_layout->setStretch(2, lrintf(1000 * preview_proportion));
+       ui->vertical_layout->setStretch(0, lrintf(me_height));
+       ui->vertical_layout->setStretch(1, std::max<int>(1, lrintf(height - me_height - preview_height)));
+       ui->vertical_layout->setStretch(2, lrintf(preview_height));
 
        // Set the widths for the previews.
-       double preview_width = preview_height * 16.0 / 9.0;
-       double preview_width_proportion = preview_width / width();  // FIXME: spacing?
-
-       ui->preview_displays->setStretch(0, lrintf(1000 * preview_width_proportion));
-       ui->preview_displays->setStretch(1, lrintf(1000 * preview_width_proportion));
-       ui->preview_displays->setStretch(2, lrintf(1000 * preview_width_proportion));
-       ui->preview_displays->setStretch(3, lrintf(1000 * preview_width_proportion));
-       ui->preview_displays->setStretch(4, lrintf(1000 * (1.0 - 4.0 * preview_width_proportion)));
+       double preview_width = preview_height * 16.0 / 9.0;  // FIXME: spacing?
+
+       ui->preview_displays->setStretch(0, lrintf(preview_width));
+       ui->preview_displays->setStretch(1, lrintf(preview_width));
+       ui->preview_displays->setStretch(2, lrintf(preview_width));
+       ui->preview_displays->setStretch(3, lrintf(preview_width));
+       ui->preview_displays->setStretch(4, lrintf(width - 4.0 * preview_width));
 }
 
 void MainWindow::set_transition_names(vector<string> transition_names)