From 6e82c5964e31f3cc937911069709af9830071338 Mon Sep 17 00:00:00 2001
From: Aleksey Lim <alsroot@member.fsf.org>
Date: Fri, 25 Dec 2009 15:34:56 +0000
Subject: Use only one directory level for sources

---
(limited to 'waveform_mouth.py')

diff --git a/waveform_mouth.py b/waveform_mouth.py
new file mode 100644
index 0000000..71a10ea
--- /dev/null
+++ b/waveform_mouth.py
@@ -0,0 +1,80 @@
+# Speak.activity
+# A simple front end to the espeak text-to-speech engine on the XO laptop
+# http://wiki.laptop.org/go/Speak
+#
+# Copyright (C) 2008  Joshua Minor
+# This file is part of Speak.activity
+#
+# Parts of Speak.activity are based on code from Measure.activity
+# Copyright (C) 2007  Arjun Sarwal - arjun@laptop.org
+# 
+#     Speak.activity 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 3 of the License, or
+#     (at your option) any later version.
+# 
+#     Speak.activity 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 Speak.activity.  If not, see <http://www.gnu.org/licenses/>.
+
+# This code is a stripped down version of the waveform view from Measure
+
+from mouth import *
+
+class WaveformMouth(Mouth):
+    def __init__(self, audioSource, fill_color):
+
+        Mouth.__init__(self, audioSource, fill_color)
+        
+        self.buffer_size = 100
+        self.peaks = []
+
+        self.stop=False
+
+        self.y_mag_bias_multiplier = 1
+        self.y_mag = 0.7
+
+    def expose(self, widget, event):
+        """This function is the "expose" event handler and does all the drawing."""
+
+        bounds = self.get_allocation()
+        self.param1 = bounds.height/65536.0
+        self.param2 = bounds.height/2.0
+
+        #Create context, disable antialiasing
+        self.context = widget.window.cairo_create()
+        self.context.set_antialias(cairo.ANTIALIAS_NONE)
+
+        #set a clip region for the expose event. This reduces redrawing work (and time)
+        self.context.rectangle(event.area.x, event.area.y,event.area.width, event.area.height)
+        self.context.clip()
+
+        # background
+        self.context.set_source_rgba(*self.fill_color.get_rgba())
+        self.context.rectangle(0,0, bounds.width,bounds.height)
+        self.context.fill()
+
+        # Draw the waveform
+        self.context.set_line_width(min(bounds.height/10.0, 10))
+        count = 0
+        buflen = float(len(self.main_buffers))
+        for value in self.main_buffers:
+            peak = float(self.param1*value*self.y_mag) + self.y_mag_bias_multiplier * self.param2
+
+            if peak >= bounds.height:
+                peak = bounds.height
+            if peak <= 0:
+                peak = 0
+            
+            x = count / buflen * bounds.width 
+            self.context.line_to(x,bounds.height - peak)
+            
+            count += 1
+        self.context.set_source_rgb(0,0,0)
+        self.context.stroke()
+
+        return True
--
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