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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * samplesorter.cc
+ *
+ * Mon Nov 30 07:45:58 CET 2009
+ * Copyright 2009 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "samplesorter.h"
+
+#include <QPainter>
+#include <QPaintEvent>
+
+#include <math.h>
+#ifndef MAXFLOAT
+#define MAXFLOAT (3.40282347e+38F)
+#endif
+
+SampleSorter::SampleSorter()
+{
+ data = NULL;
+ size = 0;
+ attlen = 666; // Magical constants needs biblical proportions...
+}
+
+void SampleSorter::setWavData(const float *data, size_t size)
+{
+ this->data = data;
+ this->size = size;
+ resort();
+}
+
+void SampleSorter::setSelections(Selections s)
+{
+ _selections = s;
+ resort();
+}
+
+int SampleSorter::attackLength()
+{
+ return attlen;
+}
+
+void SampleSorter::setAttackLength(int len)
+{
+ attlen = len;
+ resort();
+}
+
+Selections SampleSorter::selections()
+{
+ Selections s;
+ int j = 0;
+
+ QMap<float, Selection>::iterator i = sorted.begin();
+ while(i != sorted.end()) {
+ s[j++] = i.value();
+ i++;
+ }
+
+ return s;
+}
+
+void SampleSorter::resort()
+{
+ sorted.clear();
+
+ min = MAXFLOAT;
+ max = 0.0;
+
+ QMap<int, Selection>::iterator i = _selections.begin();
+ while(i != _selections.end()) {
+ float energy = 0.0;
+ Selection s = i.value();
+
+ for(size_t idx = s.from;
+ (idx < (size_t)s.from + (size_t)attackLength()) && (idx < (size_t)s.to) && (idx < size);
+ idx++) {
+ energy += data[idx] * data[idx];
+ }
+
+ while(sorted.find(energy) != sorted.end()) {
+ energy += 1; // Make sure that the key is unique.
+ }
+
+ sorted[energy] = i.value();
+
+ if(energy < min) min = energy;
+ if(energy > max) max = energy;
+
+ i++;
+ }
+
+ update();
+}
+
+void SampleSorter::setActiveSelection(Selection s)
+{
+ sel = s;
+ update();
+}
+
+#define MAP(p) (height()-(int)(p*((float)height()/(float)width())))
+
+static void drawCircle(QPainter &p, int x, int y)
+{
+ p.drawEllipse(x-2, y-2, 4, 4);
+}
+
+void SampleSorter::paintEvent(QPaintEvent *event)
+{
+ QPainter painter(this);
+
+ QColor colBg = QColor(180, 200, 180);
+ QColor colFg = QColor(160, 180, 160);
+ QColor colPt = QColor(255, 100, 100);
+ QColor colPtSel = QColor(255, 255, 100);
+
+ painter.setPen(colBg);
+ painter.setBrush(colBg);
+ painter.drawRect(event->rect());
+
+ painter.setPen(colFg);
+ painter.drawLine(0,height(),width(),0);
+
+ if(sorted.isEmpty()) return;
+
+ QMap<float, Selection>::iterator i = sorted.begin();
+ while(i != sorted.end()) {
+ if(sel.to == i.value().to && sel.from == i.value().from) painter.setPen(colPtSel);
+ else painter.setPen(colPt);
+ float x = (i.key()/max)*(float)width();
+ drawCircle(painter, x, MAP(x));
+ i++;
+ }
+}