June 2018 Update

Task/Animation/Python/animation-1.py

@@ -1,55 +1,44 @@
-import pygame, sys
-from pygame.locals import *
-pygame.init()
+#!/usr/bin/env python3
+import sys
 
-YSIZE = 40
-XSIZE = 150
+from PyQt5.QtCore import QBasicTimer, Qt
+from PyQt5.QtGui import QFont
+from PyQt5.QtWidgets import QApplication, QLabel
 
-TEXT = "Hello World! "
-FONTSIZE = 32
 
-LEFT = False
-RIGHT = True
+class Marquee(QLabel):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.right_to_left_direction = True
+        self.initUI()
+        self.timer = QBasicTimer()
+        self.timer.start(80, self)
 
-DIR = RIGHT
+    def initUI(self):
+        self.setWindowFlags(Qt.FramelessWindowHint)
+        self.setAttribute(Qt.WA_TranslucentBackground)
+        self.setText("Hello World! ")
+        self.setFont(QFont(None, 50, QFont.Bold))
+        # make more irritating for the authenticity with <marquee> element
+        self.setStyleSheet("QLabel {color: cyan; }")
 
-TIMETICK = 180
-TICK = USEREVENT + 2
+    def timerEvent(self, event):
+        i = 1 if self.right_to_left_direction else -1
+        self.setText(self.text()[i:] + self.text()[:i])  # rotate
 
-TEXTBOX = pygame.Rect(10,10,XSIZE,YSIZE)
+    def mouseReleaseEvent(self, event):  # change direction on mouse release
+        self.right_to_left_direction = not self.right_to_left_direction
 
-pygame.time.set_timer(TICK, TIMETICK)
+    def keyPressEvent(self, event):  # exit on Esc
+        if event.key() == Qt.Key_Escape:
+            self.close()
 
-window = pygame.display.set_mode((XSIZE, YSIZE))
-pygame.display.set_caption("Animation")
 
-font = pygame.font.SysFont(None, FONTSIZE)
-screen = pygame.display.get_surface()
-
-def rotate():
-    index = DIR and -1 or 1
-    global TEXT
-    TEXT = TEXT[index:]+TEXT[:index]
-
-def click(position):
-    if TEXTBOX.collidepoint(position):
-        global DIR
-        DIR = not DIR
-
-def draw():
-    surface = font.render(TEXT, True, (255,255,255), (0,0,0))
-    global TEXTBOX
-    TEXTBOX = screen.blit(surface, TEXTBOX)
-
-def input(event):
-    if event.type == QUIT:
-        sys.exit(0)
-    elif event.type == MOUSEBUTTONDOWN:
-        click(event.pos)
-    elif event.type == TICK:
-        draw()
-        rotate()
-
-while True:
-    input(pygame.event.wait())
-    pygame.display.flip()
+app = QApplication(sys.argv)
+w = Marquee()
+# center widget on the screen
+w.adjustSize()  # update w.rect() now
+w.move(QApplication.instance().desktop().screen().rect().center()
+       - w.rect().center())
+w.show()
+sys.exit(app.exec())

Task/Animation/Python/animation-2.py

@@ -1,23 +1,55 @@
-import Tkinter as tki
+import pygame, sys
+from pygame.locals import *
+pygame.init()
 
-def scroll_text(s, how_many):
-    return s[how_many:] + s[:how_many]
+YSIZE = 40
+XSIZE = 150
 
-direction = 1
-tk = tki.Tk()
-var = tki.Variable(tk)
+TEXT = "Hello World! "
+FONTSIZE = 32
 
-def mouse_handler(point):
-    global direction
-    direction *= -1
+LEFT = False
+RIGHT = True
 
-def timer_handler():
-    var.set(scroll_text(var.get(),direction))
-    tk.after(125, timer_handler)
+DIR = RIGHT
 
-var.set('Hello, World! ')
-tki.Label(tk, textvariable=var).pack()
-tk.bind("<Button-1>", mouse_handler)
-tk.after(125, timer_handler)
-tk.title('Python Animation')
-tki.mainloop()
+TIMETICK = 180
+TICK = USEREVENT + 2
+
+TEXTBOX = pygame.Rect(10,10,XSIZE,YSIZE)
+
+pygame.time.set_timer(TICK, TIMETICK)
+
+window = pygame.display.set_mode((XSIZE, YSIZE))
+pygame.display.set_caption("Animation")
+
+font = pygame.font.SysFont(None, FONTSIZE)
+screen = pygame.display.get_surface()
+
+def rotate():
+    index = DIR and -1 or 1
+    global TEXT
+    TEXT = TEXT[index:]+TEXT[:index]
+
+def click(position):
+    if TEXTBOX.collidepoint(position):
+        global DIR
+        DIR = not DIR
+
+def draw():
+    surface = font.render(TEXT, True, (255,255,255), (0,0,0))
+    global TEXTBOX
+    TEXTBOX = screen.blit(surface, TEXTBOX)
+
+def input(event):
+    if event.type == QUIT:
+        sys.exit(0)
+    elif event.type == MOUSEBUTTONDOWN:
+        click(event.pos)
+    elif event.type == TICK:
+        draw()
+        rotate()
+
+while True:
+    input(pygame.event.wait())
+    pygame.display.flip()

Task/Animation/Python/animation-3.py

@@ -0,0 +1,23 @@
+import Tkinter as tki
+
+def scroll_text(s, how_many):
+    return s[how_many:] + s[:how_many]
+
+direction = 1
+tk = tki.Tk()
+var = tki.Variable(tk)
+
+def mouse_handler(point):
+    global direction
+    direction *= -1
+
+def timer_handler():
+    var.set(scroll_text(var.get(),direction))
+    tk.after(125, timer_handler)
+
+var.set('Hello, World! ')
+tki.Label(tk, textvariable=var).pack()
+tk.bind("<Button-1>", mouse_handler)
+tk.after(125, timer_handler)
+tk.title('Python Animation')
+tki.mainloop()