소프트웨어 개발/Python
[참조] 간단한 이미지 뷰어 파이썬 코드
남들이 해놓은 것을 잘 이용해 먹는것도 일을 효율적으로 할수 있는 방법이다.
일단 기본적인 이미지 뷰어를 샘플을 변형해 만들어 본다. PyQT 샘플로 일종의 샘플 코드다.
Base.py
## -*- coding: utf-8 -*-
#############################################################################
##
## Copyright (C) 2010 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
#############################################################################
from PyQt4 import QtCore, QtGui
class ImageViewer(QtGui.QMainWindow):
def __init__(self):
super(ImageViewer, self).__init__()
self.printer = QtGui.QPrinter()
self.scaleFactor = 0.0
self.imageLabel = QtGui.QLabel()
self.imageLabel.setBackgroundRole(QtGui.QPalette.Base)
self.imageLabel.setSizePolicy(QtGui.QSizePolicy.Ignored,
QtGui.QSizePolicy.Ignored)
self.imageLabel.setScaledContents(True)
self.scrollArea = QtGui.QScrollArea()
self.scrollArea.setBackgroundRole(QtGui.QPalette.Dark)
self.scrollArea.setWidget(self.imageLabel)
self.setCentralWidget(self.scrollArea)
self.createActions()
self.createMenus()
self.setWindowTitle("Image Viewer")
self.resize(500, 400)
def open(self):
fileName = QtGui.QFileDialog.getOpenFileName(self, "Open File",
QtCore.QDir.currentPath())
if fileName:
image = QtGui.QImage(fileName)
if image.isNull():
QtGui.QMessageBox.information(self, "Image Viewer",
"Cannot load %s." % fileName)
return
self.imageLabel.setPixmap(QtGui.QPixmap.fromImage(image))
self.scaleFactor = 1.0
self.printAct.setEnabled(True)
self.fitToWindowAct.setEnabled(True)
self.updateActions()
if not self.fitToWindowAct.isChecked():
self.imageLabel.adjustSize()
def print_(self):
dialog = QtGui.QPrintDialog(self.printer, self)
if dialog.exec_():
painter = QtGui.QPainter(self.printer)
rect = painter.viewport()
size = self.imageLabel.pixmap().size()
size.scale(rect.size(), QtCore.Qt.KeepAspectRatio)
painter.setViewport(rect.x(), rect.y(), size.width(), size.height())
painter.setWindow(self.imageLabel.pixmap().rect())
painter.drawPixmap(0, 0, self.imageLabel.pixmap())
def getROI(self):
print "hi"
def zoomIn(self):
self.scaleImage(1.25)
def zoomOut(self):
self.scaleImage(0.8)
def normalSize(self):
self.imageLabel.adjustSize()
self.scaleFactor = 1.0
def fitToWindow(self):
fitToWindow = self.fitToWindowAct.isChecked()
self.scrollArea.setWidgetResizable(fitToWindow)
if not fitToWindow:
self.normalSize()
self.updateActions()
def about(self):
QtGui.QMessageBox.about(self, "About Gorakgarak ROI Finder",
"<p>The <b>Gorakgarak ROI Finder</b> is a simple mockup program</p> "
"<p>if you want to invest, Please email me </p> ")
def createActions(self):
self.openAct = QtGui.QAction("&Open...", self, shortcut="Ctrl+O",
triggered=self.open)
self.printAct = QtGui.QAction("&Print...", self, shortcut="Ctrl+P",
enabled=False, triggered=self.print_)
self.exitAct = QtGui.QAction("E&xit", self, shortcut="Ctrl+Q",
triggered=self.close)
self.zoomInAct = QtGui.QAction("Zoom &In (25%)", self,
shortcut="Ctrl++", enabled=False, triggered=self.zoomIn)
self.zoomOutAct = QtGui.QAction("Zoom &Out (25%)", self,
shortcut="Ctrl+-", enabled=False, triggered=self.zoomOut)
self.normalSizeAct = QtGui.QAction("&Normal Size", self,
shortcut="Ctrl+S", enabled=False, triggered=self.normalSize)
self.fitToWindowAct = QtGui.QAction("&Fit to Window", self,
enabled=False, checkable=True, shortcut="Ctrl+F",
triggered=self.fitToWindow)
self.aboutAct = QtGui.QAction("&About", self, triggered=self.about)
self.aboutQtAct = QtGui.QAction("About &Qt", self,
triggered=QtGui.qApp.aboutQt)
self.getROI = QtGui.QAction("get &ROI", self, shortcut="Ctrl+R", triggered=self.getROI)
def createMenus(self):
self.fileMenu = QtGui.QMenu("&File", self)
self.fileMenu.addAction(self.openAct)
self.fileMenu.addAction(self.printAct)
self.fileMenu.addSeparator()
self.fileMenu.addAction(self.exitAct)
self.viewMenu = QtGui.QMenu("&View", self)
self.viewMenu.addAction(self.zoomInAct)
self.viewMenu.addAction(self.zoomOutAct)
self.viewMenu.addAction(self.normalSizeAct)
self.viewMenu.addSeparator()
self.viewMenu.addAction(self.fitToWindowAct)
self.helpMenu = QtGui.QMenu("&Help", self)
self.helpMenu.addAction(self.aboutAct)
self.helpMenu.addAction(self.aboutQtAct)
self.analyzeMenu = QtGui.QMenu("&Analyze", self)
self.analyzeMenu.addAction(self.getROI)
self.menuBar().addMenu(self.fileMenu)
self.menuBar().addMenu(self.viewMenu)
self.menuBar().addMenu(self.helpMenu)
self.menuBar().addMenu(self.analyzeMenu)
def updateActions(self):
self.zoomInAct.setEnabled(not self.fitToWindowAct.isChecked())
self.zoomOutAct.setEnabled(not self.fitToWindowAct.isChecked())
self.normalSizeAct.setEnabled(not self.fitToWindowAct.isChecked())
def scaleImage(self, factor):
self.scaleFactor *= factor
self.imageLabel.resize(self.scaleFactor * self.imageLabel.pixmap().size())
self.adjustScrollBar(self.scrollArea.horizontalScrollBar(), factor)
self.adjustScrollBar(self.scrollArea.verticalScrollBar(), factor)
self.zoomInAct.setEnabled(self.scaleFactor < 3.0)
self.zoomOutAct.setEnabled(self.scaleFactor > 0.333)
def adjustScrollBar(self, scrollBar, factor):
scrollBar.setValue(int(factor * scrollBar.value()
+ ((factor - 1) * scrollBar.pageStep()/2)))
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
imageViewer = ImageViewer()
imageViewer.show()
sys.exit(app.exec_())
이제 이미지까지 불러오는것을 마쳤으니, 실제로 Region of Interest 를 찾아보는 작업을 한다.
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