From 4daa3f6dac734ae9277159a1ae895006819887e5 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Thu, 17 Apr 2014 09:25:03 +0200
Subject: Make threshold slider generate new selections while moving. Add
 progressbar to export.

---
 dgedit/audioextractor.cc      |  9 +++++++++
 dgedit/audioextractor.h       |  4 ++++
 dgedit/canvastoolthreshold.cc | 13 ++++++++++++-
 dgedit/canvastoolthreshold.h  |  1 +
 dgedit/mainwindow.cc          | 14 +++++++++++++-
 5 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/dgedit/audioextractor.cc b/dgedit/audioextractor.cc
index 5e37312..4250afb 100644
--- a/dgedit/audioextractor.cc
+++ b/dgedit/audioextractor.cc
@@ -29,6 +29,7 @@
 #include <QDomDocument>
 #include <QFile>
 #include <QDir>
+#include <QApplication>
 
 #include <sndfile.h>
 
@@ -44,6 +45,11 @@ AudioExtractor::AudioExtractor(Selections &s, QObject *parent)
 
 void AudioExtractor::exportSelections()
 {
+  emit setMaximumProgress(selections.ids().size());
+  int progress = 0;
+  emit progressUpdate(progress++);
+  qApp->processEvents();
+
   // Open all input audio files:
   audiodata_t audiodata[audiofiles.size()];
 
@@ -137,6 +143,9 @@ void AudioExtractor::exportSelections()
 
     idx++;
     si++;
+
+    emit progressUpdate(progress++);
+    qApp->processEvents();
   }
 
   // Close all input audio files:
diff --git a/dgedit/audioextractor.h b/dgedit/audioextractor.h
index a91fe6c..ae50d17 100644
--- a/dgedit/audioextractor.h
+++ b/dgedit/audioextractor.h
@@ -52,6 +52,10 @@ public slots:
   void setExportPath(const QString &path);
   void setOutputPrefix(const QString &prefix);
 
+signals:
+  void progressUpdate(int value);
+  void setMaximumProgress(int value);
+
 private:
   Selections &selections;
   AudioFileList audiofiles;
diff --git a/dgedit/canvastoolthreshold.cc b/dgedit/canvastoolthreshold.cc
index d8e2dff..a321ff2 100644
--- a/dgedit/canvastoolthreshold.cc
+++ b/dgedit/canvastoolthreshold.cc
@@ -45,7 +45,9 @@ CanvasToolThreshold::CanvasToolThreshold(Canvas *c)
 
 bool CanvasToolThreshold::mouseMoveEvent(QMouseEvent *event)
 {
- if(event->button() != Qt::LeftButton) {
+  if(!isActive()) return false;
+
+  if(event->button() != Qt::LeftButton) {
     if(abs(event->y() - mapY(threshold)) < 2 ||
        abs(event->y() - mapY(-threshold)) < 2 ) {
       canvas->setCursor(Qt::SplitVCursor);
@@ -58,6 +60,9 @@ bool CanvasToolThreshold::mouseMoveEvent(QMouseEvent *event)
     if(fabs(val) > 1.0) val = 1.0;
     threshold = fabs(val);
     canvas->update();
+
+    emit thresholdChanging(threshold);
+
     return true;
   }
 
@@ -66,6 +71,8 @@ bool CanvasToolThreshold::mouseMoveEvent(QMouseEvent *event)
 
 bool CanvasToolThreshold::mousePressEvent(QMouseEvent *event)
 {
+  if(!isActive()) return false;
+
   if(event->button() == Qt::LeftButton) {
 
     // Check if threshold is being dragged.
@@ -82,6 +89,8 @@ bool CanvasToolThreshold::mousePressEvent(QMouseEvent *event)
 
 bool CanvasToolThreshold::mouseReleaseEvent(QMouseEvent *event)
 {
+  if(!isActive()) return false;
+
   if(event->button() == Qt::LeftButton) {
     if(threshold_is_moving) {
       threshold_is_moving = false;
@@ -99,6 +108,8 @@ bool CanvasToolThreshold::mouseReleaseEvent(QMouseEvent *event)
 
 void CanvasToolThreshold::paintEvent(QPaintEvent *event, QPainter &painter)
 {
+  if(!isActive()) return;
+
   if(threshold_is_moving) painter.setPen(colThresholdMoving);
   else painter.setPen(colThreshold);
   painter.drawLine(event->rect().x(), mapY(threshold),
diff --git a/dgedit/canvastoolthreshold.h b/dgedit/canvastoolthreshold.h
index 0c593e8..907e312 100644
--- a/dgedit/canvastoolthreshold.h
+++ b/dgedit/canvastoolthreshold.h
@@ -46,6 +46,7 @@ public:
 
 signals:
   void thresholdChanged(double threshold);
+  void thresholdChanging(double threshold);
 
 private:
   float threshold;
diff --git a/dgedit/mainwindow.cc b/dgedit/mainwindow.cc
index 1b82841..8cefa82 100644
--- a/dgedit/mainwindow.cc
+++ b/dgedit/mainwindow.cc
@@ -41,6 +41,7 @@
 #include <QFileDialog>
 #include <QIntValidator>
 #include <QTabWidget>
+#include <QProgressBar>
 
 #include <unistd.h>
 
@@ -86,11 +87,13 @@ MainWindow::MainWindow()
   CanvasTool *listen = g_listen;
   addTool(toolbar, canvas, listen);
   threshold = new CanvasToolThreshold(canvas);
-  addTool(toolbar, canvas, threshold);
+  canvas->tools.push_back(threshold);//addTool(toolbar, canvas, threshold);
   tool_selections = new CanvasToolSelections(canvas, selections,
                                              selections_preview);
   connect(threshold, SIGNAL(thresholdChanged(double)),
           tool_selections, SLOT(thresholdChanged(double)));
+  connect(threshold, SIGNAL(thresholdChanging(double)),
+          tool_selections, SLOT(thresholdChanged(double)));
   connect(&selections, SIGNAL(activeChanged(sel_id_t)),
           canvas, SLOT(update()));
   addTool(toolbar, canvas, tool_selections);
@@ -217,6 +220,7 @@ void MainWindow::tabChanged(int tabid)
   tool_selections->setShowPreview(tabid == generateTabId);
   sorter->setShowPreview(tabid == generateTabId);
   tool_selections->autoCreateSelectionsPreview();
+  threshold->setActive(tabid == generateTabId);
 }
 
 QWidget *MainWindow::createFilesTab()
@@ -267,6 +271,8 @@ QWidget *MainWindow::createGenerateTab()
 
   connect(threshold, SIGNAL(thresholdChanged(double)),
           tool_selections, SLOT(autoCreateSelectionsPreview()));
+  connect(threshold, SIGNAL(thresholdChanging(double)),
+          tool_selections, SLOT(autoCreateSelectionsPreview()));
 
   QPushButton *clearsel = new QPushButton();
   clearsel->setText("Clear");
@@ -375,6 +381,12 @@ QWidget *MainWindow::createExportTab()
   connect(exportsel, SIGNAL(clicked()), this, SLOT(doExport()));
   l->addWidget(exportsel);
 
+  QProgressBar *bar = new QProgressBar();
+  connect(extractor, SIGNAL(progressUpdate(int)), bar, SLOT(setValue(int)));
+  connect(extractor, SIGNAL(setMaximumProgress(int)),
+          bar, SLOT(setMaximum(int)));
+  l->addWidget(bar);
+
   l->addStretch();
 
   return w;
-- 
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