home/diploma/lws_root/simray/simray.py

# -*- coding: utf-8 -*-

#---Standard library imports
import math
from collections import namedtuple
import time
import threading
import sys
import os
import subprocess

import logging; 
logging.basicConfig(level=logging.DEBUG)
log = logging.getLogger()

#---Third-party imports
import PyQt4
from PyQt4 import QtGui, QtCore
from scipy.misc import fromimage, imfilter, pilutil
import numpy as np
import scipy.ndimage.filters as image_filters
from PIL import Image, ImageFilter, ImageDraw

sys.path.append(os.path.abspath('../'))
from utils.path import path
from utils.xml import NS_MAP
from utils import extract as np_extract, getPyPlot, cython_annotate
from utils.qt import NumpyModel, QTLoggingHandler, MaterialModel
from utils.objparser import Mesh
from utils.materials import loadMaterials

from intersect import Mesh2D
import pyximport; pyximport.install(setup_args={'include_dirs': [np.get_include()]})

from _gpu import dostuff

np.set_printoptions(linewidth=200, threshold=1000)

#---Framework imports
cython_annotate('_simulator.pyx')
        
from _simulator import Simulation

REBUILD_UI = True
if REBUILD_UI:
    # rebuild ui file
    f = path(PyQt4.__file__).parent.joinpath('uic/pyuic.py')
    try:
        subprocess.check_call([sys.executable, f, 'simray.ui', '-o', 'ui_simray.py'])
    except subprocess.CalledProcessError:
        log.exception('Error during pyqt compiling')
    
# import from build ui file
from ui_simray import Ui_MainWindow

#---Globals
INTENSITY = 0.0000002
OFFSET_X = OFFSET_Y = 0

tmpDir = path('tmp')

#---Functions

class Source(object):
    def __init__(self, x, y, power, idx):
        self.x = x
        self.y = y
        self.power = power
        self.idx = idx
        
class Config(object):
    # [rays]
    rayangle = 38
    raycount = 2000
    
    max_generations = 6
    
    # [map]
    
    pixel_per_meter = 16
    # auto calculated during loadmesh
    width = None
    height = None 
    
    alphachannel = 150
    
    bgmap = True
    reflections = True
    refractions = True
    gausssigma = 5
    
    # files
    meshfile = path('../../maps/umic/umic.obj')
    measurementsfile = path(r'd:\loco-dev\maps\umic\experiment\measure.txt')
    
    mesh_xlim = (-1, 58)
    mesh_ylim = (-1, 18)
    
config = Config()

def smoothMap(Z, maxpower):
    #~ Z = Z / maxpower # normalize to max=1.0
    Z = 10 * np.log10(Z)
    # filter values that are -inf'ed by np.log(0)
    
    #~ Z[np.isinf(Z)] = -200
    Z[np.isinf(Z)] = -130 #-np.min(np.isfinite(Z))
    
    Z = image_filters.gaussian_filter(Z, config.gausssigma)
    
    return Z

class MeshLoader(object):
    def __init__(self):
        self.objfile = None
        self.m2d = None
        self.mesh = None
        
    def load(self, objfile):
        self.objfile = path(objfile)
        self.mesh = Mesh()
        self.mesh.parseObjFile(self.objfile)
        
        self.m2d = Mesh2D(self.mesh, config.mesh_xlim, config.mesh_ylim, config.pixel_per_meter)
        config.width = self.m2d.width
        config.height = self.m2d.height
        
meshLoader = MeshLoader()
meshLoader.load(config.meshfile)

    
class Renderer(object):
    def __init__(self):
        source1 = Source(580, 55, INTENSITY, 0)
        source2 = Source(500, 80, INTENSITY, 1)
        source3 = Source(810, 160, INTENSITY, 2)
        source4 = Source(60, 200, INTENSITY, 3)
        
        #~ self.sources = [source1, source2, source3, source4]
        self.sources = [source1]
        self.source_signals = [] # key: source id, value: smothed signal map 
        self.needReplot = False
        
        self.needSimUpdate = threading.Event()
        self.renderLoop = threading.Thread(target=self._render)
        self.renderLoop.daemon = True
        self.renderLoop.start()
        
        self.plotLock = threading.Lock()
        
        self.imageBufferPtr = None
        
        self.envmap = np.zeros([config.width, config.height], dtype=np.int16)
        self.materials = [] # holds material data for each object
        
    def _runsim(self, verbose=True):
        t = time.time()
        self.sim = Simulation(config.width, config.height, config.max_generations, 
                                config.reflections, config.refractions, self.sources,
                                self.materials, config.pixel_per_meter)
        
        self.sim.initRays(config.raycount, config.rayangle)
        
        
        init_time = time.time() -t
        
        t = time.time()
        #~ rays = self.sim.rays[0].toNumpy()
        #~ maparray = dostuff(rays, self.sim.map)
        #~ print 'gpu: %.3f sec' % (time.time() - t)
        
        self.sim.build(self.envmap)
        render_time = time.time() -t
        
        t = time.time()
        self.sim.map.writeBGRA(self.imageBufferPtr, self.envmap_, config.alphachannel)
        draw_time = time.time()  - t
        
        if verbose:
            s = '%.3f init, %.3f render, %.3f draw [%.2f frames/sec]' % (init_time, render_time, draw_time, 1 / (render_time + draw_time + 1e-9))
            log.info(s)
            
            #~ s = ', '.join('g%s:%sr/%sms' % (i, rays.count, int(duration*1000)) 
                        #~ for i, rays, duration in self.sim.generations[:20])
            #~ log.debug(s)
                
    def _render(self):
        try:
            
            while True:
                self.needSimUpdate.wait()
                
                if self.imageBufferPtr is None:
                    raise ValueError('imagebuffer not connected')
                
                self._runsim()
                
                signals.newSimulationData.emit()
                
                self.needSimUpdate.clear()
                
                if self.needReplot:
                    self._plot()
                    self.needReplot = False
                
        except Exception:
            log.exception('error during rendering')
    
    def _plot(self):
        plt, mlab, dates, font_manager, ticker = getPyPlot()
        map = self.sim.map
        
        def _work():
            with self.plotLock:
                log.debug('plotting...')
                self.source_signals = []
                
                t = time.time()
                dpi = 96
                fig = plt.figure(figsize=(float(config.width) / dpi, float(config.height) / dpi))
                try:
                    #~ ax = plt.axes([0.10, 0.10, 0.89, 0.89])
                    ax = plt.axes([0.00, 0.00, 1.0, 1.0], axisbg='black')
                    
                    x = np.arange(0, map.width, 1)
                    y = np.arange(0, map.height, 1)
                    X, Y = np.meshgrid(x, y)
                    
                    gauss_duration = 0
                    
                    for i in range(len(map.sources)):
                        _t = time.time()
                        Z = map.asArray(i, invertY=True)
                        Z = smoothMap(Z, map.sources[i].power)
                        
                        gauss_duration += (time.time() - _t)
                        #~ Z = image_filters.median_filter(Z, size=(5,5))
                        try:
                            levels = range(-110, -50, 5)
                            #~ levels = range(-110, 10, 10)
                            ax.contour(X, Y, Z, levels)
                        except ValueError:
                            pass
                            
                        self.source_signals.append(Z)
                        
                    fig.savefig(tmpDir.joinpath('analysis.png'), format='png', dpi=dpi)
                    log.info('plotted map in %.3f sec [gauss: %.3f sec]' % (time.time() - t, gauss_duration))
                finally:
                    plt.close(fig)
            
            signals.newPlotAvailable.emit()
        
        threading.Thread(target=_work).start()
    
    def setImage(self, image):
        '''the a QImage instance that should be used for drawing'''
        self.imageBufferPtr = image.bits() 
        
    def update(self, withPlot=False):
        if withPlot:
            self.needReplot = True
        self.needSimUpdate.set()
        
    def saveEnvMap(self, fname):
        self.envmap_ = self.envmap.transpose().ravel()
        envmap = self.envmap.transpose()
        
        colors = [(255, 0, 0, 255), (0, 255, 0, 255), 
                  (0, 0, 255, 255), (255, 255, 255, 255), 
                  (255, 0, 255, 255), (128, 128, 128, 255)]
        img = Image.new('RGBA', (config.width, config.height), color=0)
        pixels = img.load()
        for x in range(config.width):
            for y in range(config.height):
                if envmap[y][x] > 0:
                    idx = envmap[y][x] % len(colors)
                    pixels[x, y] = colors[idx]
        log.debug('saving envmap to %s' % path(fname).abspath())
        img.save(fname)
        
renderer = Renderer()

class Signals(QtCore.QObject):
    ''' signals have to be classlevel attributes of a QObject
    so we need to define them here
    '''
    logMsg = QtCore.pyqtSignal(str)
    newPlotAvailable = QtCore.pyqtSignal()
    newAnalysisMap = QtCore.pyqtSignal(str)
    newSimulationData = QtCore.pyqtSignal()
    renderMapMouseMove = QtCore.pyqtSignal(int, int, tuple)
    renderMapSelectRect = QtCore.pyqtSignal(tuple)
    
signals = Signals()

class RenderedMap(QtGui.QLabel):
    ''' acts as drawing pane for the renderer data 
    and as mouse controller for moving the sources
    '''
    def __init__(self, parent, mainform):
        QtGui.QLabel.__init__(self, parent)
        self.setGeometry(0, 0, config.width, config.height)
        
        self.image = QtGui.QImage(config.width, config.height,  QtGui.QImage.Format_ARGB32)
        # tell the renderer where to store the image data
        renderer.setImage(self.image)
        
        self.setMouseTracking(True)
        
        self.dragged_source = None
        
        signals.newSimulationData.connect(self.onNewSimulationData)
        
        self.mainform = mainform
        
        self.mouseMode = 'dragSources'
        self.selected_rect = None 
        self.inSelect = False
    
    def onNewSimulationData(self):
        if (self.selected_rect is not None and self.dragged_source is None):
            self.selectRect(self.selected_rect)
        else:
            self.reloadImageBuffer()
        
    def reloadImageBuffer(self):
        self.setPixmap(QtGui.QPixmap.fromImage(self.image))
    
    def mousePressEvent(self, event):
        x = event.pos().x()
        y = event.pos().y()
        
        if self.mouseMode == 'dragSources':
            min_dist, min_dist_source = 99999, None
            for source in renderer.sources:
                d = math.sqrt((source.x - x)**2 + (source.y - y)**2)
                if d < min_dist:
                    min_dist, min_dist_source = d, source
            
            self.dragged_source = min_dist_source
        
        elif self.mouseMode == 'zoomRect':
            if self.inSelect:
                self._zoomRectEndSelect(x, y)
            else:
                self.inSelect = True
                self.selected_rect = [x, y, None, None]
        
        #~ elif self.mouseMode == 'hover':
            #~ self._inspectPosition(x, y)
            
    def _normalizeRect(self, r):
        # ensure x1 < x2 and y1 < y2
        r = list(r)
        if r[2] < r[0]:
            r[0], r[2] = r[2], r[0]
        if r[3] < r[1]:
            r[1], r[3] = r[3], r[1]
        return r
    
    #~ def _inspectPosition(self, x, y):
        #~ w = h = 100
        #~ r = [x-int(w/2), y-int(h/2), x+int(w/2), y+int(h/2)]
        #~ self.selectRect(r)
        
    def _inspectSection(self, r):
        map = renderer.sim.map
        w = r[2] - r[0]
        h = r[3] - r[1]
        
        x = r[0] + w / 2
        y = r[1] + h / 2
        
        #~ mode = 'smoothed'
        #~ mode = 'raw'
        mode = 'decibel_from_raw'
        
        if mode == 'smoothed':
            a = smoothMap(map.asArray(0), map.sources[0].power)
        elif mode in ('raw', 'decibel_from_raw'):
            a = map.asArray(0)
        
            
        a = np_extract(a, (h, w ), (y, x), fill=np.nan)
        
        if map.width / float(w) > map.height / float(h):
            size = (map.height, int(float(w) * map.height / h))
        else:
            size = (int(float(h) * map.width / w), map.width)
        
        offset = x - int(w / 2), y - int(h / 2)
        mainform.ui.tableViewArray.setModel(NumpyModel(a, offset, mode))
        a = pilutil.imresize(a, size, interp='nearest')
        
        pilutil.imsave('tmp/zoomrect.png', a)
        signals.newAnalysisMap.emit('tmp/zoomrect.png')
        
    def _zoomRectEndSelect(self, x, y):
        r = self.selected_rect
        self.selected_rect = r = self._normalizeRect([r[0], r[1], x, y])
        
        signals.renderMapSelectRect.emit(tuple(r))
        
        log.info('selected:%s,%s,%s,%s' % (r[0], r[2], r[1], r[3]))
        
        self._inspectSection(r)
        
        self.inSelect = False
        
    def mouseReleaseEvent(self, event):
        x = event.pos().x()
        y = event.pos().y()
        
        if self.mouseMode == 'dragSources':
            log.info('moved source to %s,%s' % (x, y))
            self.dragged_source = None
            renderer.update(withPlot=True)
        
        elif self.mouseMode == 'zoomRect':
            self._zoomRectEndSelect(x, y)
    
    def selectRect(self, r):
        self.selected_rect = r
        renderer.sim.map.drawRect(r[0], r[1], r[2], r[3])
        self.reloadImageBuffer()
        self._inspectSection(r)
        
    def mouseMoveEvent(self, event):
        x = event.pos().x()
        y = event.pos().y()
        
        if self.mouseMode == 'dragSources':
            if self.dragged_source:
                self.dragged_source.x = x
                self.dragged_source.y = y
            if self.dragged_source is not None:
                renderer.update()
            
        elif self.mouseMode == 'zoomRect':
            r = self.selected_rect
            if self.inSelect:
                nr = self._normalizeRect([r[0], r[1], x, y])
                signals.renderMapSelectRect.emit(tuple(nr))
                
                renderer.sim.map.drawRect(nr[0], nr[1], nr[2], nr[3])
                self.reloadImageBuffer()
        elif self.mouseMode == 'measure':
            # TODO: interface slowdown?
            sourceVector = tuple(sig[config.height-y][x] for sig in renderer.source_signals)
            signals.renderMapMouseMove.emit(x, y, sourceVector)
            
class MainForm(QtGui.QMainWindow):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        
        self.setupFeedbackTree()
        
        self.loadConfig()
        self.ui.actionExit.triggered.connect(lambda: self.close())
        self.ui.actionBenchmark.triggered.connect(self.benchmark)
        
        self.ui.actionMoveSources.setChecked(True)
        self.ui.actionMoveSources.triggered.connect(self.toggleMouseMode('dragSources'))
        self.ui.actionZoomRect.triggered.connect(self.toggleMouseMode('zoomRect'))
        self.ui.actionHover.triggered.connect(self.toggleMouseMode('measure'))
        
        self.loadMaterials()
        
        self.loadEnvMap()
        
        self.setupLogger()
        
        if not tmpDir.exists():
            tmpDir.mkdir()
        
        self.renderedMap = RenderedMap(self.ui.previewImage, self)
        self.loadBackgroundForRenderMap()
        
        signals.newPlotAvailable.connect(self.onNewPlotAvailable)
        signals.newAnalysisMap.connect(self.onNewAnalysisImage)
        signals.renderMapMouseMove.connect(self.onRenderMapMouseMove)
        signals.renderMapSelectRect.connect(self.onRenderMapRectSelect)
        renderer.update(withPlot=True)
        
    def toggleMouseMode(self, mode):
        def _inner():
            self.renderedMap.mouseMode = mode
            if mode != 'dragSources':
                self.ui.actionMoveSources.setChecked(False)
            if mode != 'zoomRect':
                self.ui.actionZoomRect.setChecked(False)
            if mode != 'measure':
                self.ui.actionHover.setChecked(False)
            
            if mode in ('zoomRect', 'measure'):
                self.renderedMap.selected_rect = None
                
        return _inner
            
    def benchmark(self):
        log.info('starting benchmark...')
        total = 150
        t = time.time()
        for i in range(total):
            renderer._runsim(verbose=False)
        avgdur = (time.time() - t) / total
        log.info('%s runs - avg duration: %.3f/sec [%.2f frames/sec]' % (total, avgdur, avgdur**-1))
        
    def setupFeedbackTree(self):
        p = QtGui.QTreeWidgetItem(self.ui.treeFeedback)
        p.setText(0, 'Position')
        
        e = self.feedback_posx = QtGui.QTreeWidgetItem()
        p.addChild(e)
        e.setText(0, 'x')
        
        e = self.feedback_posy = QtGui.QTreeWidgetItem()
        p.addChild(e)
        e.setText(0, 'y')
        
        self.ui.treeFeedback.expandItem(p)
        
        p = QtGui.QTreeWidgetItem(self.ui.treeFeedback)
        p.setText(0, 'Sources')
        
        self.feedback_sources = {}
        for i, source in enumerate(renderer.sources):
            e = QtGui.QTreeWidgetItem()
            p.addChild(e)
            e.setText(0, str(i))
            self.feedback_sources[i] = e
        
        self.ui.treeFeedback.expandItem(p)
        
        self.feedback_rect_parent = p = QtGui.QTreeWidgetItem(self.ui.treeFeedback)
        p.setText(0, 'SelectedRect')
        self.feedback_rect = []
        for s in ('x1', 'y1', 'x2', 'y2'):
            e = QtGui.QTreeWidgetItem()
            p.addChild(e)
            e.setText(0, s)
            self.feedback_rect.append(e)
    
    
    def loadEnvMap(self):
        ''' load map from mesh file and sets self.envmap'''
        
        #~ zz = np.zeros([config.width, config.height], dtype=np.int16)
        t = time.time()
        
        CUT_AT_Z = 1.0
        
        for i, objname in enumerate(meshLoader.m2d.objnames, 1):
            #~ if objname != 'Light_Walls_M4':
                #~ continue
            log.debug('loading object %s: %s' % (i, objname))
            
            fn = 'cut_%s_%s_%s.png' % (objname, ','.join(str(e) for e in config.mesh_xlim + config.mesh_ylim), config.pixel_per_meter)
            cachefile = tmpDir.joinpath(fn)
            
            if not cachefile.exists() or cachefile.mtime < meshLoader.objfile.mtime:
                img = meshLoader.m2d.cut(objname, CUT_AT_Z)
                log.debug('cache file to %s' % cachefile.abspath())
                img.save(cachefile)
            else:
                log.debug('from cached %s' % cachefile.abspath())
                img = Image.open(cachefile)
                
            #~ if img is None:
                #~ log.debug('cutplane for object %s is empty' % objname)
                #~ continue
                
            edges = fromimage(img)
            
            e = edges.astype(np.int16).transpose()
            
            shapediff = renderer.envmap.shape[0] - e.shape[0]
            both = (e, np.zeros((shapediff, e.shape[1])))
            e = np.vstack(both)
            
            shapediff = renderer.envmap.shape[1] - e.shape[1]
            both = (e, np.zeros((e.shape[0], shapediff)))
            e = np.hstack(both)
            
            e = np.clip(e, 0, 1) * i # set every entry that is greater 0 to layerindex
            # user first array as condition - if entry of forst array is greater 0 use that entry - else the stored value
            # effect: copy layer over layer
            renderer.envmap = np.where(e, e, renderer.envmap).astype(np.int16)
            
        
        log.info('loaded layer in %.3f sec' % (time.time() -t))
        renderer.saveEnvMap('tmp/envmap_edges.png')
        
    def loadMaterials(self):
        materials = loadMaterials('../../maps/umic/materials.xml')
        
        def reloadMaterials():
            renderer.materials[:] = []
            for objname in meshLoader.m2d.objnames:
                matname = meshLoader.mesh.materials[objname]
                log.debug('using material %s' % matname)
                reflection, refraction = materials[matname].reflect, materials[matname].alpha
                renderer.materials.append((reflection, refraction))
        
        reloadMaterials()
        
        def newMaterialParams():
            reloadMaterials()
            
            renderer.update(withPlot=True)
            
        model = MaterialModel(materials)
        self.ui.tableMaterials.setModel(model)
        
        model.onChange = newMaterialParams
        
        
        
    def loadConfig(self):
        def onChange(cfgname, translate, check=None):
            def _inner(value):
                try:
                    value = translate(value)
                except ValueError:
                    pass
                else:
                    if check is None or check(value):
                        setattr(config, cfgname, value)
                        renderer.update(withPlot=True)
            return _inner
        
        cfg = [('spinBoxRayAngle', 'rayangle'), ('spinBoxRayCount', 'raycount'),
                ('spinBoxGenerations', 'max_generations'), ('spinBoxAlphaChannel', 'alphachannel'),
                ('spinBoxGaussSigma',  'gausssigma'),
                ('checkBoxBGMap', 'bgmap'), ('checkBoxReflections', 'reflections'), ('checkBoxRefractions', 'refractions')]
        
        for ui_name, cfg_name in cfg:
            e = getattr(self.ui, ui_name)
            if isinstance(e, PyQt4.QtGui.QSpinBox):
                e.setValue(getattr(config, cfg_name))
                e.valueChanged.connect(onChange(cfg_name, int, lambda v: 0 < v < 10000))
            elif isinstance(e, PyQt4.QtGui.QCheckBox):
                e.setCheckState(2 if getattr(config, cfg_name) else 0)
                e.stateChanged.connect(onChange(cfg_name, lambda v: True if v else False))
        
        for qtimg in (self.ui.previewImage, self.ui.analysisImage):
            qtimg.setMaximumSize(config.width, config.height)
            qtimg.setMinimumSize(config.width, config.height)
        
        # load measurement file
        self.ui.lineEditMeasurements.setText(config.measurementsfile)
        if config.measurementsfile.exists():
            self.ui.textMeasurements.setPlainText(config.measurementsfile.text())
            
        
        
    def loadBackgroundForRenderMap(self, baseImgFile=None):
        if baseImgFile is None or not config.bgmap:
            img = Image.new('RGBA', (config.width, config.height), (0,0,0, 255))
        else:
            img = Image.open(baseImgFile)
        
        draw = ImageDraw.Draw(img)
        edgeimg = Image.open('tmp/envmap_edges.png')
        img.paste(edgeimg, (0, 0), edgeimg)
        
        # draw access points
        for source in renderer.sources:
            draw.ellipse([(source.x - 3, source.y - 3), (source.x + 2, source.y + 3)], fill='white')
            
        
        # draw measurements
        for line in config.measurementsfile.lines():
            x, y, z, _, sigstrength = line.split()
            x, y = meshLoader.m2d.meter2pixel(float(x), float(y))
            draw.ellipse([(x - 3, y - 3), (x + 2, y + 3)], fill='red')
        
        img.save('tmp/renderMapBackground.png')
        
        self.ui.previewImage.setStyleSheet("background-image: url(tmp/renderMapBackground.png)")
        log.info('loaded bgimage')

    def setupLogger(self):
        from PyQt4.Qsci import QsciScintilla
        
        _fromUtf8 = QtCore.QString.fromUtf8
        self.ui.textLogger = QsciScintilla(self.ui.mainWidget)
        self.ui.textLogger.setToolTip(_fromUtf8(""))
        self.ui.textLogger.setWhatsThis(_fromUtf8(""))
        self.ui.textLogger.setObjectName(_fromUtf8("textLogger"))
        #~ print dir(self.ui.tabLogger)
        self.ui.tabLogger.layout().addWidget(self.ui.textLogger)
        
        self.ui.textLogger.setFont(QtGui.QFont('Lucida Console', pointSize=9))
        self.ui.textLogger.SendScintilla(QsciScintilla.SCI_SETHSCROLLBAR, 0)
        
        def _log(msg):
            self.ui.textLogger.append(msg + '\n')
            self.ui.textLogger.SendScintilla(QsciScintilla.SCI_GOTOPOS, len(self.ui.textLogger.text()), 0)
        
        log.handlers = []
        log.addHandler(QTLoggingHandler(signals.logMsg))
        signals.logMsg.connect(_log)
        
        self.ui.actionClearLog.triggered.connect(lambda: self.ui.textLogger.setText(''))
        
    #~ @signals.newPlotAvailable.connect
    def onNewPlotAvailable(self):
        self.loadBackgroundForRenderMap('tmp/analysis.png')
        #~ self.ui.analysisImage.setStyleSheet("background-image: url(tmp/analysis.png)")
    
    #~ @signals.newAnalysisMap.connect
    def onNewAnalysisImage(self, fname):
        css = "background-image: url(%s); background-repeat: no-repeat" % fname
        self.ui.analysisImage.setStyleSheet(css)
    
    #~ @signals.renderMapMouseMove.connect
    def onRenderMapMouseMove(self, x, y, sourceVector):
        _x, _y = meshLoader.m2d.pixel2meter(x, y)
        self.feedback_posx.setText(1, '%.2f [%s]' % (_x, x))
        self.feedback_posy.setText(1, '%.2f [%s]' % (_y, y))
            
        for i, value in enumerate(sourceVector):
            self.feedback_sources[i].setText(1, '%.3f' % value)
    
    #~ @signals.renderMapSelectRect.connect
    def onRenderMapRectSelect(self, r):
        for item, value in zip(self.feedback_rect, r):
            item.setText(1, '%s' % value)
        self.ui.treeFeedback.expandItem(self.feedback_rect_parent)
        
    def closeEvent(self, event):
        pass
    
    
    def eventFilter(self, object, event):
        print event.type()
        return True

class App(QtGui.QApplication):
    pass

if __name__ == '__main__':
    app = App(sys.argv)
    mainform = MainForm()
    mainform.show()
    sys.exit(app.exec_())