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app.py
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/
app.py
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import sys, os, logging, uuid
from cStringIO import StringIO
import pil
from PyQt4.QtCore import (Qt, QObject, QBuffer, QByteArray, QIODevice, QString, QFileInfo, QPoint, QRect, QRectF, QSize, SIGNAL)
from PyQt4.QtGui import (QApplication, QImage, QDialog, QFileDialog, QGraphicsView,
QGraphicsScene, QPainter, QHBoxLayout, QVBoxLayout,
QPushButton, QPixmap, QGraphicsPixmapItem, QGraphicsEllipseItem,
QMessageBox, QMatrix, QGraphicsRectItem)
logging.getLogger().setLevel(logging.DEBUG)
DIRTY = False
PIX = None
class GraphicsView(QGraphicsView):
rubber_band = None
selection = None
def __init__(self, scene, parent=None):
super(GraphicsView, self).__init__(parent)
self.setScene(scene)
self.setRenderHint(QPainter.Antialiasing)
self.setRenderHint(QPainter.TextAntialiasing)
def wheelEvent(self, event):
factor = 1.41 ** (-event.delta() / 240.0)
self.scale(factor, factor)
def __mousePressEvent(self,event):
self.drag_start = event.pos()
def __mouseReleaseEvent(self,event):
global PIX
self.drag_stop = event.pos()
im = PIX.pixmap().toImage()
start, stop = self.mapToScene(self.drag_start),self.mapToScene(self.drag_stop)
logging.debug((start,stop))
augmented = QGraphicsPixmapItem(QPixmap(tempfile))
augmented.setOffset(rect.topLeft())
augmented.setMatrix(QMatrix())
if None != self.selectbox: self.scene().removeItem(self.selectbox)
self.selectbox = augmented
self.scene().addItem(self.selectbox)
def mousePressEvent(self, event):
self.start = event.pos()
if not self.rubber_band:
self.rubber_band = QGraphicsRectItem(None, self.scene())
self.rubber_band.setRect(self.mapToScene(QRect(self.start,QSize())).boundingRect())
self.scene().addItem(self.rubber_band)
logging.info(self.__class__.__name__+' press')
def mouseMoveEvent(self, event):
if self.rubber_band:
self.rubber_band.setRect(self.mapToScene(QRect(self.start,event.pos()).normalized()).boundingRect())
logging.info(self.__class__.__name__+' move')
def mouseReleaseEvent(self, event):
if self.rubber_band:
self.doIt(self.rubber_band.rect())
self.scene().removeItem(self.rubber_band)
self.rubber_band = None
logging.info(self.__class__.__name__+' release')
def doIt(self, rect):
global PIX
pix_rect = PIX.mapToItem(PIX,rect).toPolygon().boundingRect()
logging.debug(pix_rect)
im = PIX.pixmap().toImage()
im = im.copy(pix_rect)
tempfile = os.path.join(os.getenv('TMP'),str(uuid.uuid4())+'.jpg')
im.save(tempfile, 'JPEG')
try:
coords = pil.process(tempfile)
rect = QRect(QPoint(*coords[0]),QPoint(*coords[1])).normalized()
logging.debug(rect)
zone = QGraphicsEllipseItem(QRectF(rect))
zone = self.rubber_band.mapFromItem()
self.mapFrom()
self.scene().addItem(zone)
except Exception, err:
logging.error(err)
finally:
os.remove(tempfile)
class MainForm(QDialog):
def __init__(self, parent=None):
super(MainForm, self).__init__(parent)
self.filename = QString()
self.scene = QGraphicsScene(self)
self.view = GraphicsView(self.scene)
self.view.setScene(self.scene)
buttonLayout = QVBoxLayout()
for text, slot in (
("&Open", self.addPixmap),
("&Quit", self.accept)):
button = QPushButton(text)
self.connect(button, SIGNAL("clicked()"), slot)
if text == "&Quit":
buttonLayout.addStretch(1)
buttonLayout.addWidget(button)
buttonLayout.addStretch()
layout = QHBoxLayout()
layout.addWidget(self.view, 1)
layout.addLayout(buttonLayout)
self.setLayout(layout)
self.setWindowTitle("Petal Picker")
def addPixmap(self):
path = (QFileInfo(self.filename).path()
if not self.filename.isEmpty() else ".")
fname = QFileDialog.getOpenFileName(self,
"Add Pixmap", path,
"Pixmap Files (*.bmp *.jpg *.png *.xpm)")
if fname.isEmpty(): return
self.createPixmapItem(QPixmap(fname))
def createPixmapItem(self, pixmap, matrix=QMatrix()):
global PIX
item = QGraphicsPixmapItem(pixmap)
PIX = item
# item.setFlags(QGraphicsItem.ItemIsSelectable|
# QGraphicsItem.ItemIsMovable)
item.setMatrix(matrix)
self.scene.clearSelection()
for i in self.scene.items():
self.scene.removeItem(i)
self.scene.addItem(item)
self.view.fitInView(item,Qt.KeepAspectRatio)
global DIRTY
DIRTY = True
def accept(self):
global DIRTY
if not DIRTY: QDialog.accept(self)
if DIRTY:
if self.confirm(): QDialog.accept(self)
else: return
def confirm(self):
global DIRTY
if (DIRTY and QMessageBox.question(self,
"Really Quit?",
"Really Quit?",
QMessageBox.Yes|QMessageBox.No) ==
QMessageBox.Yes): return True
else: return False
app = QApplication(sys.argv)
form = MainForm()
rect = QApplication.desktop().availableGeometry()
form.resize(int(rect.width() * 0.6), int(rect.height() * 0.9))
form.show()
app.exec_()