From ecc9ad9b06184dc2a4d2bc8da581d8bca0ae67aa Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 19 Aug 2008 17:36:18 +0200
Subject: [PATCH] beep when changing volume

---
 configure.ac       |  2 +-
 src/pavucontrol.cc | 59 +++++++++++++++++++++++++++++++++++++++++-----
 2 files changed, 54 insertions(+), 7 deletions(-)

diff --git a/configure.ac b/configure.ac
index e4663e7..65c685a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -38,7 +38,7 @@ AC_PROG_LN_S
 AC_TYPE_SIGNAL
 AC_HEADER_STDC
 
-PKG_CHECK_MODULES(GUILIBS, [ gtkmm-2.4 libglademm-2.4 sigc++-2.0 ])
+PKG_CHECK_MODULES(GUILIBS, [ gtkmm-2.4 libglademm-2.4 sigc++-2.0 libcanberra-gtk ])
 AC_SUBST(GUILIBS_CFLAGS)
 AC_SUBST(GUILIBS_LIBS)
 
diff --git a/src/pavucontrol.cc b/src/pavucontrol.cc
index 8b67e58..fd63209 100644
--- a/src/pavucontrol.cc
+++ b/src/pavucontrol.cc
@@ -29,6 +29,8 @@
 #include <libglademm.h>
 #include <libintl.h>
 
+#include <canberra-gtk.h>
+
 #include <pulse/pulseaudio.h>
 #include <pulse/glib-mainloop.h>
 #include <pulse/ext-stream-restore.h>
@@ -91,6 +93,8 @@ public:
     bool can_decibel;
     bool volumeScaleEnabled;
 
+    Glib::ustring beepDevice;
+
     virtual void set_sensitive(bool enabled);
 };
 
@@ -118,6 +122,8 @@ public:
     void enableVolumeMeter();
     void updatePeak(double v);
 
+    Glib::ustring beepDevice;
+
 protected:
     virtual bool on_button_press_event(GdkEventButton* event);
 };
@@ -376,13 +382,15 @@ void ChannelWidget::setVolume(pa_volume_t volume) {
 
         if (dB > PA_DECIBEL_MININFTY) {
             snprintf(txt, sizeof(txt), "%0.2f dB", dB);
-            volumeLabel->set_text(txt);
+            volumeLabel->set_tooltip_text(txt);
         } else
-            volumeLabel->set_markup("-&#8734;dB");
-    } else {
-        snprintf(txt, sizeof(txt), "%0.0f%%", v);
-        volumeLabel->set_text(txt);
-    }
+            volumeLabel->set_tooltip_markup("-&#8734;dB");
+        volumeLabel->set_has_tooltip(TRUE);
+    } else
+        volumeLabel->set_has_tooltip(FALSE);
+
+    snprintf(txt, sizeof(txt), "%0.0f%%", v);
+    volumeLabel->set_text(txt);
 
     volumeScaleEnabled = false;
     volumeScale->set_value(v > 100 ? 100 : v);
@@ -399,6 +407,26 @@ void ChannelWidget::onVolumeScaleValueChanged() {
 
     pa_volume_t volume = (pa_volume_t) ((volumeScale->get_value() * PA_VOLUME_NORM) / 100);
     streamWidget->updateChannelVolume(channel, volume);
+
+    if (beepDevice != "") {
+        g_debug("blah: %s", beepDevice.c_str());
+        ca_context_change_device(ca_gtk_context_get(), beepDevice.c_str());
+
+        ca_context_cancel(ca_gtk_context_get(), 2);
+
+        int r = ca_gtk_play_for_widget(GTK_WIDGET(volumeScale->gobj()),
+                               2,
+                               CA_PROP_EVENT_DESCRIPTION, _("Volume Control Feedback Sound"),
+                               CA_PROP_EVENT_ID, "audio-volume-change",
+                               CA_PROP_CANBERRA_CACHE_CONTROL, "permanent",
+                               CA_PROP_CANBERRA_VOLUME, "0",
+                               CA_PROP_CANBERRA_ENABLE, "1",
+                               NULL);
+
+        g_debug("%i = %s", r, ca_strerror(r));
+
+        ca_context_change_device(ca_gtk_context_get(), NULL);
+    }
 }
 
 void ChannelWidget::set_sensitive(bool enabled) {
@@ -524,6 +552,7 @@ void StreamWidget::setChannelMap(const pa_channel_map &m, bool can_decibel) {
 
     for (int i = 0; i < m.channels; i++) {
         ChannelWidget *cw = channelWidgets[i] = ChannelWidget::create();
+        cw->beepDevice = beepDevice;
         cw->channel = i;
         cw->can_decibel = can_decibel;
         cw->streamWidget = this;
@@ -988,6 +1017,7 @@ void MainWindow::updateSink(const pa_sink_info &info) {
         w = sinkWidgets[info.index];
     else {
         sinkWidgets[info.index] = w = SinkWidget::create();
+        w->beepDevice = info.name;
         w->setChannelMap(info.channel_map, !!(info.flags & PA_SINK_DECIBEL_VOLUME));
         sinksVBox->pack_start(*w, false, false, 0);
         w->index = info.index;
@@ -1631,6 +1661,9 @@ void sink_cb(pa_context *, const pa_sink_info *i, int eol, void *userdata) {
     MainWindow *w = static_cast<MainWindow*>(userdata);
 
     if (eol < 0) {
+        if (pa_context_errno(context) == PA_ERR_NOENTITY)
+            return;
+
         show_error(_("Sink callback failure"));
         return;
     }
@@ -1647,6 +1680,9 @@ void source_cb(pa_context *, const pa_source_info *i, int eol, void *userdata) {
     MainWindow *w = static_cast<MainWindow*>(userdata);
 
     if (eol < 0) {
+        if (pa_context_errno(context) == PA_ERR_NOENTITY)
+            return;
+
         show_error(_("Source callback failure"));
         return;
     }
@@ -1663,6 +1699,9 @@ void sink_input_cb(pa_context *, const pa_sink_input_info *i, int eol, void *use
     MainWindow *w = static_cast<MainWindow*>(userdata);
 
     if (eol < 0) {
+        if (pa_context_errno(context) == PA_ERR_NOENTITY)
+            return;
+
         show_error(_("Sink input callback failure"));
         return;
     }
@@ -1679,6 +1718,9 @@ void source_output_cb(pa_context *, const pa_source_output_info *i, int eol, voi
     MainWindow *w = static_cast<MainWindow*>(userdata);
 
     if (eol < 0) {
+        if (pa_context_errno(context) == PA_ERR_NOENTITY)
+            return;
+
         show_error(_("Source output callback failure"));
         return;
     }
@@ -1710,6 +1752,9 @@ void client_cb(pa_context *, const pa_client_info *i, int eol, void *userdata) {
     MainWindow *w = static_cast<MainWindow*>(userdata);
 
     if (eol < 0) {
+        if (pa_context_errno(context) == PA_ERR_NOENTITY)
+            return;
+
         show_error(_("Client callback failure"));
         return;
     }
@@ -1955,6 +2000,8 @@ int main(int argc, char *argv[]) {
 
     Gtk::Main kit(argc, argv);
 
+    ca_context_set_driver(ca_gtk_context_get(), "pulse");
+
     Gtk::Window* mainWindow = MainWindow::create();
 
     pa_glib_mainloop *m = pa_glib_mainloop_new(g_main_context_default());