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这是按照82课敲的
为什么效果不对
- import pygame
- from pygame.locals import*
- import sys
- #ygame初始化
- pygame.init()
- size = width, height = 600, 400
- bg = (255, 255, 255)
- screen = pygame.display.set_mode(size)
- clock = pygame.time.Clock()
- #放置图像
- xier = pygame.image.load('1.png')
- #0:未选择 1:选择中 2:完成选择
- select = 0
- select_rect = pygame.Rect(0, 0, 0, 0)
- #0:未选择 1:拖拽中 2:完成拖拽
- drag = 0
- position = xier.get_rect()
- position.center = width//2, height//2
- while True:
- for event in pygame.event.get():
- if event.type == QUIT:
- sys.exit()
- elif event.type == MOUSEBUTTONDOWN:
- if event.button == 1:
- #第一次点击:选择范围
- if select == 0 and drag == 0:
- pos_start = event.pos
- select == 1
- #第二次点击:拖动图像
- elif select == 2 and drag == 0:
- copyimage = screen.subsurface(select_rect).copy()
- copy_image = copyimage.get_rect()
- drag = 1
- #第三次点击:初始化
- elif select == 2 and drag == 2:
- select = 0
- drag =0
- elif event.type == MOUSEBUTTONUP:
- if event.button == 1:
- #第一次释放:选择结束
- if select == 1 and drag == 0:
- pos_stop = event.pos
- select = 2
- #第二次释放:拖拽结束
- elif select == 2 and drag == 1:
- drag =2
- screen.fill(bg)
- screen.blit(xier, position)
- if select:
- mose_pos = pygame.mouse.get_pos()
- if select == 1:
- pos_stop = mouse_pos
- select_rect.left, select_rect.top = pos_start
- select_rect.width, select_rect.height = pos_stop[0] - pos_start[0], pos_stop[1] - pos_start[1]
- pygame.draw.rect(screen, (0, 0, 0), select_rect, 1)
- if drag:
- if drag == 1:
- copy_image.center = mouse_pos
- screen.blit(copyimage, copy_image)
- pygame.display.flip()
- clock.tick(30)
复制代码
求救!!!
- import pygame
- import sys
- from pygame.locals import *
- pygame.init()
- size = width, height = 800, 600
- bg = (255, 255, 255)
- clock = pygame.time.Clock()
- screen = pygame.display.set_mode(size)
- pygame.display.set_caption("FishC Demo")
- turtle = pygame.image.load("turtle.png")
- # 0 -> 未选择,1 -> 选择中,2 -> 完成选择
- select = 0
- select_rect = pygame.Rect(0, 0, 0, 0)
- # 0 -> 未拖拽,1 -> 拖拽中,2 -> 完成拖拽
- drag = 0
- position = turtle.get_rect()
- position.center = width // 2, height // 2
- while True:
- for event in pygame.event.get():
- if event.type == QUIT:
- sys.exit()
- elif event.type == MOUSEBUTTONDOWN:
- if event.button == 1:
- # 第一次点击,选择范围
- if select == 0 and drag == 0:
- pos_start = event.pos
- select = 1
- # 第二次点击,推拽图像
- elif select == 2 and drag == 0:
- capture = screen.subsurface(select_rect).copy()
- cap_rect = capture.get_rect()
- drag = 1
- # 第三次点击,初始化
- elif select == 2 and drag == 2:
- select = 0
- drag = 0
- elif event.type == MOUSEBUTTONUP:
- if event.button == 1:
- # 第一次释放,结束选择
- if select == 1 and drag == 0:
- pos_stop = event.pos
- select = 2
- # 第二次释放,结束拖拽
- if select == 2 and drag == 1:
- drag = 2
-
- screen.fill(bg)
- screen.blit(turtle, position)
-
- # 实时绘制选择框
- if select:
- mouse_pos = pygame.mouse.get_pos()
- if select == 1:
- pos_stop = mouse_pos
- select_rect.left, select_rect.top = pos_start
- select_rect.width, select_rect.height = pos_stop[0] - pos_start[0], pos_stop[1] - pos_start[1]
- pygame.draw.rect(screen, (0, 0, 0), select_rect, 1)
- # 拖拽裁剪的图像
- if drag:
- if drag == 1:
- cap_rect.center = mouse_pos
- screen.blit(capture, cap_rect)
-
- pygame.display.flip()
-
- clock.tick(30)
复制代码
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