...

src/kr/co/swh/lecture/python/pyqt5/drawing/blob_insert.py

@@ -0,0 +1,34 @@
+import pymysql.cursors
+
+def convertToBinaryData(filename):
+    # Convert digital data to binary format
+    with open(filename, 'rb') as file:
+        binaryData = file.read()
+    return binaryData
+
+def insertBLOB(id, name, photo, biodataFile):
+    try:
+        conn = pymysql.connect(host='dev-swh.ga',
+                                             database='market',
+                                             user='root',
+                                             password='swhacademy!',
+                                             charset='utf8')
+
+        with conn.cursor() as cursor:
+            sql_insert_blob_query = """ INSERT INTO image
+                          (id, name, photo, data) VALUES (%s,%s,%s,%s)"""
+
+            picture = convertToBinaryData(photo)
+            file = convertToBinaryData(biodataFile)
+
+            # Convert data into tuple format
+            insert_blob_tuple = (id, name, picture, file)
+            result = cursor.execute(sql_insert_blob_query, insert_blob_tuple)
+            conn.commit()
+            print("Image and file inserted successfully as a BLOB into image table", result)
+
+    finally:
+        conn.close()
+        print("MySQL connection is closed")
+
+insertBLOB(1, "Family", "family.jpg", "family_data.txt")

src/kr/co/swh/lecture/python/pyqt5/drawing/blob_select.py

@@ -0,0 +1,28 @@
+import pymysql.cursors
+from io import BytesIO
+from PIL import Image
+
+
+
+def selectBLOB(id):
+    try:
+        conn = pymysql.connect(host='dev-swh.ga',
+                                             database='market',
+                                             user='root',
+                                             password='swhacademy!',
+                                             charset='utf8')
+
+        with conn.cursor() as cursor:
+            sql_select_blob_query = "SELECT photo FROM image where id = %d" % id
+            cursor.execute(sql_select_blob_query)
+            data=cursor.fetchone()
+            if data:
+                print(type(data))
+                getImage = Image.open(BytesIO(data[0]))
+                getImage.show()
+
+    finally:
+        conn.close()
+        print("MySQL connection is closed")
+
+selectBLOB(1)

src/kr/co/swh/lecture/python/pyqt5/drawing/blob_select_flask.py

@@ -0,0 +1,40 @@
+import pymysql.cursors
+import base64
+from flask import Flask, render_template
+app = Flask(__name__)
+
+
+def selectBLOB(id):
+    try:
+        conn = pymysql.connect(host='dev-swh.ga',
+                                             database='market',
+                                             user='root',
+                                             password='swhacademy!',
+                                             charset='utf8')
+
+        with conn.cursor() as cursor:
+            sql_select_blob_query = "SELECT photo FROM image where id = %d" % id
+            cursor.execute(sql_select_blob_query)
+            data=cursor.fetchone()
+            if data:
+                print(type(data[0]))
+#                 바이트를 이미지로 표현하기 위해 Data URL형태로 표현
+#                 웹 페이지로 바이트를 단독으로 데이터형태로 옮길 수 없기에, 문자열 형태로 변환
+
+#                 Base64란 소리나 이미지 영상 등 (Binary Data)를 Text로 바꾸는 Encoding(binary-to-text encoding schemes)
+#                 Binary Data를 Character set에 영향을 받지 않는 공통 ASCII 영역의 문자로만 이루어진 문자열로 바꾸는 Encoding
+                getImage = base64.b64encode(data[0])
+                getImage = getImage.decode("UTF-8")
+                return getImage
+
+    finally:
+        conn.close()
+        print("MySQL connection is closed")
+
+@app.route('/<int:id>')
+def hello(id):
+    getImage = selectBLOB(id)
+    return render_template('image.html', image=getImage)
+
+if __name__ == "__main__":
+    app.run(host="127.0.0.1", port="8080")

src/kr/co/swh/lecture/python/pyqt5/drawing/drawing1.py

@@ -0,0 +1,21 @@
+import sys
+from PyQt5.QtWidgets import *
+
+class Window(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.title = "PyQt5 Drawing Tutorial"
+        self.top= 150
+        self.left= 150
+        self.width = 500
+        self.height = 500
+        self.InitWindow()
+
+    def InitWindow(self):
+        self.setWindowTitle(self.title)
+        self.setGeometry(self.top, self.left, self.width, self.height)
+        self.show()
+        
+App = QApplication(sys.argv)
+window = Window()
+sys.exit(App.exec())        

src/kr/co/swh/lecture/python/pyqt5/drawing/drawing2.py

@@ -0,0 +1,41 @@
+import sys
+from PyQt5.QtWidgets import *
+from PyQt5.QtGui import QPainter, QBrush, QPen
+from PyQt5.QtCore import Qt
+
+class Window(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.title = "PyQt5 Drawing Tutorial"
+        self.top= 150
+        self.left= 150
+        self.width = 500
+        self.height = 500
+        self.InitWindow()
+
+    def InitWindow(self):
+        self.setWindowTitle(self.title)
+        self.setGeometry(self.top, self.left, self.width, self.height)
+        self.show()
+        
+#    Painter는 기본 도형을 그리는 다양한 기능을 제공. 선, 직사각형 등.
+#    
+    def paintEvent(self, event):
+        painter = QPainter(self)
+        
+#         QPen은 QPainter가 모양을 디자인하거나 스타일을 지정하는 방법 인 QPainter의 작동을 정의
+#         https://likegeeks.com/wp-content/uploads/2019/01/04-1.png
+        painter.setPen(QPen(Qt.green,  8, Qt.DashLine))
+#         painter.setPen(QPen(Qt.green,  8, Qt.SolidLine))
+
+#         QBrush 모듈은 모양에 대한 색상, 질감 등을 제공
+#         https://likegeeks.com/wp-content/uploads/2019/01/07-1.png
+        painter.setBrush(QBrush(Qt.red, Qt.SolidPattern))
+        
+#         더 자세한 내용은 https://likegeeks.com/pyqt5-drawing-tutorial/
+        painter.drawEllipse(40, 40, 400, 400)
+        
+        
+App = QApplication(sys.argv)
+window = Window()
+sys.exit(App.exec())        

src/kr/co/swh/lecture/python/pyqt5/drawing/family_data.txt

@@ -0,0 +1,3 @@
+못생긴 하마
+귀여운 유키
+착한 레종

src/kr/co/swh/lecture/python/pyqt5/drawing/mouse1.py

@@ -0,0 +1,41 @@
+from PyQt5.QtWidgets import QMainWindow, QApplication, QDesktopWidget
+from PyQt5.QtCore import Qt
+import sys
+
+class Main(QMainWindow):
+    def __init__(self):
+        super().__init__()
+
+        self.setMouseTracking(True)
+
+        self.setWindowTitle('mouse')
+        self.resize(320, 240)
+        self.show()
+
+    def mouseButtonKind(self, buttons):
+        if buttons & Qt.LeftButton:
+            print('LEFT')
+        if buttons & Qt.MidButton:
+            print('MIDDLE')
+        if buttons & Qt.RightButton:
+            print('RIGHT')
+
+    def mousePressEvent(self, e):  # e ; QMouseEvent
+        print('BUTTON PRESS')
+        self.mouseButtonKind(e.buttons())
+
+    def mouseReleaseEvent(self, e):  # e ; QMouseEvent
+        print('BUTTON RELEASE')
+        self.mouseButtonKind(e.buttons())
+
+    def wheelEvent(self, e):  # e ; QWheelEvent
+        print('wheel')
+        print('(%d %d)' % (e.angleDelta().x(), e.angleDelta().y()))
+
+    def mouseMoveEvent(self, e):  # e ; QMouseEvent
+        print('(%d %d)' % (e.x(), e.y()))
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    win = Main()
+    sys.exit(app.exec_())

src/kr/co/swh/lecture/python/pyqt5/drawing/templates/image.html

@@ -0,0 +1,8 @@
+<html>
+    <head>
+        <title>SWH Sample</title>
+    </head>
+    <body>
+        <img height="280" width="180" src="data:image/jpg;charset=utf-8;base64, {{image}}" />
+    </body>
+</html>