def initUI(self):
imageFile = "flowers.jpg"
our_pict = Image.open(imageFile)
width = 900
height = 647
our_pict = our_pict.resize((width, height),
Image.NEAREST) # change size
our_pict = ImageQt(our_pict.convert('RGBA'))
hbox = QHBoxLayout(self)
our_pict = QPixmap.fromImage(our_pict)
label = QLabel(self)
label.setPixmap(our_pict)
hbox.addWidget(label)
self.setLayout(hbox)
self.move(300, 200)
self.setWindowTitle('Example of resize')
self.show()
def initUI(self):
our_pict = "flowers.jpg"
our_pict = Image.open(our_pict)
our_pict = our_pict.crop((0, 0, 150, 150)) # left, top, right, bottom
our_pict = ImageQt(our_pict.convert('RGBA'))
hbox = QHBoxLayout(self)
our_pict = QPixmap.fromImage(our_pict)
lbl = QLabel(self)
lbl.setPixmap(our_pict)
hbox.addWidget(lbl)
self.setLayout(hbox)
self.move(300, 200)
self.setWindowTitle('Example of crop')
self.show()
class Example(QMainWindow):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.lbl = QLabel(self)
openFile = QAction(QIcon('open.png'), 'Open', self)
openFile.setShortcut('Ctrl+O')
openFile.setStatusTip('Открыть файл')
openFile.triggered.connect(self.showDialog)
sepia_btn = QAction('Sepia', self)
sepia_btn.setStatusTip('Эффект сепия')
sepia_btn.triggered.connect(self.actionSepia)
negative_btn = QAction('Negative', self)
negative_btn.setStatusTip('Эффект негатива')
negative_btn.triggered.connect(self.actionNegative)
menubar = self.menuBar()
fileMenu = menubar.addMenu('Файл')
fileMenu.addAction(openFile)
menubar.addAction(sepia_btn)
menubar.addAction(negative_btn)
self.setGeometry(300, 300, 350, 300)
self.setWindowTitle('File dialog')
self.show()
def actionSepia(self):
self.init_pix()
for i in range(self.width):
for j in range(self.height):
a = self.pix[i, j][0]
b = self.pix[i, j][1]
c = self.pix[i, j][2]
S = (a + b + c)
a = S + self.depth * 2
b = S + self.depth
c = S
if (a > 255):
a = 255
if (b > 255):
b = 255
if (c > 255):
c = 255
self.draw.point((i, j), (a, b, c))
self.img_tmp = ImageQt(self.img_tmp.convert('RGBA'))
self.pixmap = QPixmap.fromImage(self.img_tmp)
self.show_image()
def actionNegative(self):
self.init_pix()
for i in range(self.width):
for j in range(self.height):
a = self.pix[i, j][0]
b = self.pix[i, j][1]
c = self.pix[i, j][2]
self.draw.point((i, j), (255 - a, 255 - b, 255 - c))
self.img_tmp = ImageQt(self.img_tmp.convert('RGBA'))
self.pixmap = QPixmap.fromImage(self.img_tmp)
self.show_image()
def showDialog(self):
self.fname = QFileDialog.getOpenFileName(self, 'Open file', '/home')[0]
self.pixmap = QPixmap(self.fname)
self.lbl.resize(300, 300)
self.show_image()
def init_pix(self):
image = Image.open(self.fname)
self.img_tmp = image
self.draw = ImageDraw.Draw(self.img_tmp)
self.width = self.img_tmp.size[0]
self.height = self.img_tmp.size[1]
self.pix = self.img_tmp.load()
self.depth = 30
def show_image(self):
self.lbl.setPixmap(self.pixmap)
