-#include <QPainter>
-
#include "lrameter.h"
+
+#include <QPainter>
+#include <QPalette>
+#include <QPen>
#include "vu_common.h"
+class QPaintEvent;
+
using namespace std;
LRAMeter::LRAMeter(QWidget *parent)
{
}
+void LRAMeter::resizeEvent(QResizeEvent *event)
+{
+ recalculate_pixmaps();
+}
+
void LRAMeter::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
- painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
-
float level_lufs;
+ float range_low_lufs;
+ float range_high_lufs;
{
unique_lock<mutex> lock(level_mutex);
level_lufs = this->level_lufs;
+ range_low_lufs = this->range_low_lufs;
+ range_high_lufs = this->range_high_lufs;
}
- float level_lu = level_lufs + 23.0f;
- const int margin = 5;
- draw_vu_meter(painter, level_lu, width(), height(), margin);
+ float level_lu = level_lufs - ref_level_lufs;
+ float range_low_lu = range_low_lufs - ref_level_lufs;
+ float range_high_lu = range_high_lufs - ref_level_lufs;
+ int range_low_pos = lrint(lufs_to_pos(range_low_lu, height()));
+ int range_high_pos = lrint(lufs_to_pos(range_high_lu, height()));
+
+ QRect top_off_rect(0, 0, width(), range_high_pos);
+ QRect on_rect(0, range_high_pos, width(), range_low_pos - range_high_pos);
+ QRect bottom_off_rect(0, range_low_pos, width(), height() - range_low_pos);
+
+ painter.drawPixmap(top_off_rect, off_pixmap, top_off_rect);
+ painter.drawPixmap(on_rect, on_pixmap, on_rect);
+ painter.drawPixmap(bottom_off_rect, off_pixmap, bottom_off_rect);
// Draw the target area (+/-1 LU is allowed EBU range).
- int min_y = lufs_to_pos(1.0f, height());
- int max_y = lufs_to_pos(-1.0f, height());
+ // It turns green when we're within.
+ int min_y = lrint(lufs_to_pos(1.0f, height()));
+ int max_y = lrint(lufs_to_pos(-1.0f, height()));
// FIXME: This outlining isn't so pretty.
{
painter.setPen(pen);
painter.drawRect(2, min_y, width() - 5, max_y - min_y);
}
+
+ // Draw the integrated loudness meter, in the same color as the target area.
+ int y = lrint(lufs_to_pos(level_lu, height()));
+ {
+ QPen pen(Qt::black);
+ pen.setWidth(5);
+ painter.setPen(pen);
+ painter.drawRect(2, y, width() - 5, 1);
+ }
+ {
+ QPen pen;
+ if (level_lu >= -1.0f && level_lu <= 1.0f) {
+ pen.setColor(Qt::green);
+ } else {
+ pen.setColor(Qt::red);
+ }
+ pen.setWidth(3);
+ painter.setPen(pen);
+ painter.drawRect(2, y, width() - 5, 1);
+ }
+}
+
+void LRAMeter::recalculate_pixmaps()
+{
+ const int margin = 5;
+
+ on_pixmap = QPixmap(width(), height());
+ QPainter on_painter(&on_pixmap);
+ on_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
+ draw_vu_meter(on_painter, width(), height(), margin, 2.0, true, min_level, max_level, /*flip=*/false);
+
+ off_pixmap = QPixmap(width(), height());
+ QPainter off_painter(&off_pixmap);
+ off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
+ draw_vu_meter(off_painter, width(), height(), margin, 2.0, false, min_level, max_level, /*flip=*/false);
}