Ex09. Label

Here we create a simple label class.

For the class, we have to have initialize code which takes the text to write, the screen coordinates in x and y, as well as the background and text color.

The easiest label would be just a rectangle, however here several shapes are joined together in get_surf function: left and right circle, left and right rectangle to cover portions of circle as well as main rectangle with text. Note we fix height of triangle to be a value divisible by 2, that is, we either add 1 to original height from pygame's get_rect should it be odd.

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# Ex09.py 
# Label Class

import pygame as pg

FILL_COLOR = pg.Color("cyan")

class Label:
    def __init__(self,text,x,y,back_color,text_color):
        self.text = text
        self.x = x
        self.y = y
        self.font = pg.font.SysFont("arial",24)
        self.back_color = pg.Color(back_color)
        self.text_color = pg.Color(text_color)
        self.pad = 2
        self.surf = self.get_surf()

    def get_surf(self):
        pad_text = ' ' * self.pad
        text_string = pad_text + self.text + pad_text
        text_image = self.font.render(text_string, True,
                                      self.text_color)
        rect = text_image.get_rect()
        rect.height = 2 * round(rect.height/2)
        surf = pg.Surface((rect.width+2*rect.height,rect.height))
        surf.fill(FILL_COLOR)
        pg.draw.rect(surf,self.back_color,rect.move(rect.height,0))
        surf.blit(text_image,rect.move(rect.height,0))
        left_circ_cen = (rect.height//2,rect.centery)
        pg.draw.circle(surf,self.back_color,
                       left_circ_cen,rect.height//2)
        right_circ_cen = (rect.width+rect.height+rect.height//2,
                          rect.centery)
        pg.draw.circle(surf,self.back_color,right_circ_cen,
                       rect.height//2)
        left_rect = pg.Rect(rect.height//2, 0, rect.height//2,
                            rect.height)
        pg.draw.rect(surf,self.back_color,left_rect)
        right_rect = pg.Rect(rect.width+rect.height, 0,
                             rect.height//2, rect.height)
        pg.draw.rect(surf,self.back_color,right_rect)
        return surf

    def draw(self,screen):
        screen.blit(self.surf,(self.x,self.y))


width, height = 640, 480

pg.init()

screen = pg.display.set_mode((width, height))
pg.display.set_caption('Ex09. Label Class')
clock = pg.time.Clock()
FPS = 30

w = width // 4
label1 = Label("I am label 1", w,  height//2, "red", "blue")
label2 = Label("And I am label 2", w, height//2+100, "blue", "red")

screen.fill(FILL_COLOR)

label1.draw(screen)
label2.draw(screen)

pg.display.update()

done = False
while not done:
    clock.tick(FPS)
    for event in pg.event.get():
        if event.type == pg.QUIT:
         done = True

pg.quit()

This is the output: