#include "vu_common.h"
+
#include <math.h>
#include <algorithm>
+#include <QBrush>
+#include <QColor>
+#include <QPainter>
+
using namespace std;
int lufs_to_pos(float level_lu, int height)
}
int y = lrintf(height * (level_lu - min_level) / (max_level - min_level));
- y = std::max(y, 0);
- y = std::min(y, height - 1);
+ y = max(y, 0);
+ y = min(y, height - 1);
return y;
}
-void draw_vu_meter(QPainter &painter, float level_lu, int width, int height, int margin)
+void draw_vu_meter(QPainter &painter, float range_low_lu, float range_high_lu, int width, int height, int margin)
{
painter.fillRect(margin, 0, width - 2 * margin, height, Qt::black);
on.setColorAt(1.0f, QColor(0, 255, 0));
QColor off(80, 80, 80);
- int y = lufs_to_pos(level_lu, height);
+ int min_on_y = lufs_to_pos(range_high_lu, height);
+ int max_on_y = lufs_to_pos(range_low_lu, height);
// Draw bars colored up until the level, then gray from there.
for (int level = -18; level < 9; ++level) {
int min_y = lufs_to_pos(level + 1.0f, height) + 1;
int max_y = lufs_to_pos(level, height) - 1;
- if (y > max_y) {
- painter.fillRect(margin, min_y, width - 2 * margin, max_y - min_y, off);
- } else if (y < min_y) {
- painter.fillRect(margin, min_y, width - 2 * margin, max_y - min_y, on);
- } else {
- painter.fillRect(margin, min_y, width - 2 * margin, y - min_y, off);
- painter.fillRect(margin, y, width - 2 * margin, max_y - y, on);
+ painter.fillRect(margin, min_y, width - 2 * margin, max_y - min_y, off);
+ int min_draw_y = max(min_y, min_on_y);
+ int max_draw_y = min(max_y, max_on_y);
+ if (min_draw_y < max_draw_y) {
+ painter.fillRect(margin, min_draw_y, width - 2 * margin, max_draw_y - min_draw_y, on);
}
}
}