Merge branch 'paul' of http://projectcs.sci.ubu.ac.th/workshops/Python-Roadshow

sessions/session-3/ubuwidgets.py

+from PyQt5.QtCore import Qt, QDir, QFile, QPoint, QRect, QSize
+from PyQt5.QtWidgets import QWidget, QPushButton, QLineEdit, QLabel, QGridLayout
+from PyQt5.QtGui import QImage, QImageWriter, QPainter, QPen, qRgb, QPixmap
+
+class Button(QWidget):
+    def __init__(self,parent=None, label="Button", on_click=None):
+        super(Button,self).__init__(parent)
+        button = QPushButton(label, self)
+        button.move(220,0)
+        button.clicked.connect(on_click)
+        grid = QGridLayout()
+        grid.addWidget(button,1,0,1,2)
+        self.setLayout(grid) 
+        
+class ComboWidget(QWidget):
+    def __init__(self, parent=None, 
+                 text_on_label="Label", 
+                 text_on_button="button", 
+                 on_click=None, readOnly=False):
+        super(ComboWidget,self).__init__(parent)
+
+        button = QPushButton(text_on_button, self)
+        lbl = QLabel(self)
+        lbl.setText(text_on_label)
+        self.qle = QLineEdit(self)
+        self.qle.setReadOnly(readOnly)
+        self.qle.setAlignment(Qt.AlignCenter)
+        button.clicked.connect(on_click)
+        grid = QGridLayout()
+        grid.addWidget(lbl,1,0)
+        grid.addWidget(self.qle,1,1)
+        grid.addWidget(button,1,2)
+        self.setLayout(grid) 
+    
+    def text(self):
+        return self.qle.text()
+    
+    def set_text(self, text=""):
+        self.qle.setText(text)
+    
+class Board(QWidget):
+    def __init__(self,parent=None):
+        super(Board,self).__init__(parent)
+        self.setAttribute(Qt.WA_StaticContents)
+        self.penWidth = 50
+        self.writing = False
+        self.penColor = Qt.black
+        self.image = QImage()
+        self.lastPoint = QPoint()
+        self.setFixedSize(512,512)
+
+    def saveImage(self,label):
+        import os
+        visibleImage = self.image
+        self.resizeImage(visibleImage,self.size())
+        if QDir('Image').exists() == False:
+            QDir().mkdir('Image')
+
+        label = 'Image/'+label
+        if QDir(label).exists() == False:
+            QDir().mkdir(label)
+        cnt = 0
+        maxf = 0
+        for file in os.listdir(label):
+            if file.endswith('.bmp'):
+                cnt += 1
+                tmpN = int(file[:-4:])
+                maxf = max(maxf,tmpN)
+        visibleImage.save('tmp.bmp')
+        pixmap = QPixmap('tmp.bmp').scaled(8,8)
+        pixmap.save(label+'/'+str(max(cnt,maxf)+1)+'.bmp')
+        QFile.remove('tmp.bmp')
+        
+
+    def paintEvent(self, event):
+        painter = QPainter(self)
+        dirtyRect = event.rect()
+        painter.drawImage(dirtyRect, self.image, dirtyRect)
+
+    def clearImage(self):
+        self.image.fill(qRgb(255,255,255))
+        self.update()
+
+    def mousePressEvent(self,event):
+        if event.button() == Qt.LeftButton:
+            self.lastPoint = event.pos()
+            self.writing = True
+
+    def mouseMoveEvent(self,event):
+        if (event.buttons() & Qt.LeftButton) and self.writing:
+            self.drawLineTo(event.pos())
+
+    def mouseReleaseEvent(self,event):
+        if event.button() == Qt.LeftButton and self.writing:
+            self.drawLineTo(event.pos())
+            self.writing = False
+
+    def resizeEvent(self,event):
+        self.resizeImage(self.image,self.size())
+        self.update()
+        super(Board,self).resizeEvent(event)
+    
+    def drawLineTo(self, endPoint):
+        painter = QPainter(self.image)
+        painter.setPen(QPen(self.penColor, self.penWidth, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
+        painter.drawLine(self.lastPoint, endPoint)
+        self.writing = True
+
+        rad = self.penWidth/2 + 2
+        self.update(QRect(self.lastPoint, endPoint).normalized().adjusted(-rad, -rad, +rad, +rad))
+        self.lastPoint = QPoint(endPoint)
+
+    def resizeImage(self,image, newSize):
+        if image.size() == newSize:
+            return
+        newImage = QImage(newSize, QImage.Format_RGB32)
+        newImage.fill(qRgb(255,255,255))
+        painter = QPainter(newImage)
+        painter.drawImage(QPoint(0,0), image)
+        self.image = newImage

sessions/session-3/window.py

+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import (QAction, QApplication, QWidget,QGridLayout)
+#from board import Board
+#from clearButton import ClearButton
+#from trainWidget import TrainWidget
+#from testWidget import TestWidget
+from ubuwidgets import (Button, ComboWidget, Board)
+
+class MainWindow(QWidget):
+    def __init__(self,parent=None):
+        super(MainWindow, self).__init__(parent)
+        self.scribbleArea = Board()
+        self.clearButton = Button(self, "Clear Image", self.on_clear)
+        self.saveCombo = ComboWidget(self, "Label: ", "Save", self.on_save)
+        self.testCombo = ComboWidget(self, "Result: ", "Test", self.on_test, True)
+        grid = QGridLayout()
+        grid.addWidget(self.scribbleArea,1,0)
+        grid.addWidget(self.clearButton,2,0)
+        grid.addWidget(self.saveCombo,3,0)
+        grid.addWidget(self.testCombo,4,0)
+        self.setLayout(grid)
+        self.setWindowTitle("number ubu")
+        self.resize(512, 650)
+
+    def on_clear(self):
+        self.scribbleArea.clearImage()
+        
+    def on_save(self):
+        print('on_save')
+        self.scribbleArea.saveImage(self.saveCombo.text())
+        self.scribbleArea.clearImage()
+        
+    def on_test(self):
+        print("testing...")
+        
+        
+if __name__ == '__main__':
+    import sys
+
+    app = QApplication(sys.argv)
+    window = MainWindow()
+    window.show()
+    sys.exit(app.exec_())