PyQT5開發之參數化調節模糊

  1import?cv2?as?cv
  2from?PyQt5?import?QtWidgets,?QtCore,?QtGui
  3import?sys
  4
  5
  6class?SpinBoxComBoxDemoPanel(QtWidgets.QWidget):
  7????def?__init__(self,?parent=None):
  8????????super().__init__(parent)
  9????????#?文本標簽
 10????????self.combox?=?QtWidgets.QComboBox()
 11????????self.combox.addItem("原圖")
 12????????self.combox.addItem("模糊")
 13????????self.combox.addItem("灰度")
 14????????self.combox.setCurrentIndex(0)
 15
 16????????hbox_layout1?=?QtWidgets.QHBoxLayout()
 17????????hbox_layout1.addWidget(QtWidgets.QLabel("選擇:"))
 18????????hbox_layout1.addWidget(self.combox)
 19????????hbox_layout1.addStretch(1)
 20
 21????????panel1?=?QtWidgets.QGroupBox("單選演示")
 22????????panel1.setLayout(hbox_layout1)
 23
 24????????self.spinbox1?=?QtWidgets.QSpinBox()
 25????????self.spinbox1.setRange(0,?100)
 26????????self.spinbox1.setSingleStep(1)
 27????????self.spinbox2?=?QtWidgets.QSpinBox()
 28????????self.spinbox2.setRange(3,?50)
 29????????self.spinbox2.setSingleStep(2)
 30
 31????????hbox_layout2?=?QtWidgets.QHBoxLayout()
 32????????hbox_layout2.addWidget(QtWidgets.QLabel("窗口:"))
 33????????hbox_layout2.addWidget(self.spinbox1)
 34????????hbox_layout2.addWidget(QtWidgets.QLabel("方差:"))
 35????????hbox_layout2.addWidget(self.spinbox2)
 36????????hbox_layout2.addStretch(1)
 37
 38????????panel2?=?QtWidgets.QGroupBox("高斯模糊參數")
 39????????panel2.setLayout(hbox_layout2)
 40
 41????????panel3?=?QtWidgets.QWidget()
 42????????hbox_layout3?=?QtWidgets.QHBoxLayout()
 43????????hbox_layout3.addWidget(panel1)
 44????????hbox_layout3.addWidget(panel2)
 45????????panel3.setLayout(hbox_layout3)
 46
 47????????#?輸入文本框
 48????????self.label?=?QtWidgets.QLabel()
 49????????pixmap?=?QtGui.QPixmap("images/16.jpg")
 50????????pix?=?pixmap.scaled(QtCore.QSize(620,?500),?QtCore.Qt.KeepAspectRatio)
 51????????self.label.setPixmap(pix)
 52????????self.label.setAlignment(QtCore.Qt.AlignCenter)
 53????????self.label.setStyleSheet("background-color:black;?color:?green")
 54
 55????????#?添加到布局管理器中
 56????????vbox_layout?=?QtWidgets.QVBoxLayout()
 57????????vbox_layout.addWidget(panel3)
 58????????vbox_layout.addWidget(self.label)
 59????????vbox_layout.addStretch(1)
 60
 61????????self.spinbox1.setEnabled(False)
 62????????self.spinbox2.setEnabled(False)
 63
 64????????#?面板容器
 65????????self.setLayout(vbox_layout)
 66
 67????????#?setup?listener
 68????????self.combox.currentIndexChanged.connect(self.on_select_changed)
 69????????self.spinbox2.valueChanged.connect(self.on_update_blur)
 70
 71????def?on_select_changed(self):
 72????????index?=?self.combox.currentIndex()
 73????????self.spinbox1.setEnabled(False)
 74????????self.spinbox2.setEnabled(False)
 75????????if?index?==?0:
 76????????????self.on_update_original()
 77????????if?index?==?1:
 78????????????self.spinbox1.setEnabled(True)
 79????????????self.spinbox2.setEnabled(True)
 80????????????self.on_update_blur()
 81????????if?index?==?2:
 82????????????self.on_update_gray()
 83
 84????def?on_update_original(self):
 85????????pixmap?=?QtGui.QPixmap("images/16.jpg")
 86????????pix?=?pixmap.scaled(QtCore.QSize(620,?500),?QtCore.Qt.KeepAspectRatio)
 87????????self.label.setPixmap(pix)
 88
 89????def?on_update_blur(self):
 90????????image?=?cv.imread("images/16.jpg")
 91????????sigma?=?self.spinbox2.value()
 92????????win_size?=?self.spinbox1.value()
 93????????bgr?=?cv.GaussianBlur(image,?(win_size,?win_size),?sigma)
 94????????dst?=?cv.cvtColor(bgr,?cv.COLOR_BGR2RGB)
 95????????height,?width,?channel?=?dst.shape
 96????????bytesPerLine?=?3?*?width
 97????????img?=?QtGui.QImage(dst.data,?width,?height,?bytesPerLine,?QtGui.QImage.Format_RGB888)
 98????????pixmap?=?QtGui.QPixmap(img)
 99????????pix?=?pixmap.scaled(QtCore.QSize(620,?500),?QtCore.Qt.KeepAspectRatio)
100????????self.label.setPixmap(pix)
101
102????def?on_update_gray(self):
103????????image?=?cv.imread("images/16.jpg")
104????????gray?=?cv.cvtColor(image,?cv.COLOR_BGR2GRAY)
105????????dst?=?cv.cvtColor(gray,?cv.COLOR_GRAY2RGB)
106????????height,?width,?channel?=?dst.shape
107????????bytesPerLine?=?3?*?width
108????????img?=?QtGui.QImage(dst.data,?width,?height,?bytesPerLine,?QtGui.QImage.Format_RGB888)
109????????pixmap?=?QtGui.QPixmap(img)
110????????pix?=?pixmap.scaled(QtCore.QSize(620,?500),?QtCore.Qt.KeepAspectRatio)
111????????self.label.setPixmap(pix)

本文主要是演示了PyQT5的QSpinBox與QComboBox兩種控件使用，從創建、Group方式排版布局，事件響應處理等等細節全面介紹了它們的使用。

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