欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

Pygame鼠标进行图片的移动与缩放案例详解

程序员文章站 2022-02-26 20:05:35
pygame鼠标进行拖拽移动图片、缩放、以及按钮响应 案例# -*- coding: utf-8 -*-#!/usr/bin/env python3# @time : 2021.12# @aut...

pygame鼠标进行拖拽移动图片、缩放、以及按钮响应 案例

# -*- coding: utf-8 -*-
#!/usr/bin/env python3
# @time    : 2021.12
# @author  : 高二水令
# @software: 图层拖拽缩放
import os
import sys
import pygame
from pygame.locals import *


class background(pygame.sprite.sprite):
    def __init__(self, image_file, location):
        pygame.sprite.sprite.__init__(self)  #call sprite initializer
        self.image = pygame.image.load(image_file)
        self.rect = self.image.get_rect()
        self.rect.left, self.rect.top = location
# 写一个函数,判断一个点是否在某个范围内
# 点(x,y)
# 范围 rect(x,y,w,h)
def is_in_rect(pos, rect):
    x, y = pos
    rx, ry, rw, rh = rect
    if (rx <= x <= rx+rw) and (ry <= y <= ry+rh):
        return true
    return false
def move_image(pic_bottom,pic_upper,ssn):
#pic_bottom,pic_upper分别是背景图和上层拖拽图层,ssn是我自己设置的路径信息、不需要可以删去、需要直接运行可以改成main()
    pygame.init()
    screen = pygame.display.set_mode((710, 520))
    background = background(pic_bottom, [0, 0])
    screen.fill((255, 255, 255))
    myimage = pygame.image.load('.\\next.png')
    myimage = pygame.transform.scale(myimage, (90, 40))
    myimage_x = 600
    myimage_y = 480
    scale_ = pygame.image.load('.\\avel_scale.tif')
    scale_ = pygame.transform.scale(scale_, (70, 520))
    scale_x = 632
    scale_y = 0
    screen.blit(background.image, background.rect)
    screen.blit(scale_, (scale_x, scale_y))
    screen.blit(myimage, (myimage_x, myimage_y))
    pygame.display.set_caption('图像定标')
    size = []
    location = [0, 0]

    image = pygame.image.load(pic_upper)
    image_x = 100
    image_y = 100
    screen.blit(image,(image_x, image_y))
    pygame.display.flip()

    is_move = false
    run_flag = true
    while (run_flag==true):
        for event in pygame.event.get():
            if event.type == pygame.quit:
                exit()

            # 鼠标按下、让状态变成可以移动
            if event.type == pygame.mousebuttondown:
                w,h = image.get_size()
                if is_in_rect(event.pos, (image_x, image_y, w, h)):
                    is_move = true

            # 鼠标弹起、让状态变成不可以移动
            if event.type == pygame.mousebuttonup:
                is_move = false


            # 鼠标移动对应的事件
            if event.type == pygame.mousemotion:
                if is_move:
                    screen.fill((255, 255, 255))
                    screen.blit(background.image, background.rect)
                    x, y = event.pos
                    image_w, image_h = image.get_size()
                    # 保证鼠标在图片的中心
                    image_y = y-image_h/2
                    image_x = x-image_w/2
                    screen.blit(scale_, (scale_x, scale_y))
                    screen.blit(myimage, (myimage_x, myimage_y))
                    screen.blit(image, (image_x, image_y))
                    #print(image.get_rect())
                    location[0]=event.pos[0]
                    location[1] = event.pos[1]
                    print(event.pos)
                    pygame.display.update()
			#鼠标按钮响应、是点击图片的位置范围进行跳转
            if event.type == pygame.mousebuttondown and myimage_x <= event.pos[0] <= myimage_x + 90 and \
                    myimage_y <= event.pos[1] <= myimage_y + 40:  # 判断鼠标位置以及是否摁了下去
					#这里可以写按钮响应的功能
					
                    pygame.quit()#关闭原来窗口
                    #os.system('ui.py')
                    run_flag = false#跳出循环(不然会报错)
                    #sys.exit()
             #滚轮缩放
            if event.type == mousewheel:
                screen.fill((255, 255, 255))
                screen.blit(background.image, background.rect)
                image_width = image.get_width()
                image_heigt = image.get_height()
                image = pygame.transform.scale(image, (
                    image_width + event.y * image_width / image_heigt * 10, image_heigt + event.y * 10))
                screen.blit(scale_, (scale_x, scale_y))
                screen.blit(myimage, (myimage_x, myimage_y))
                screen.blit(image, (image_x, image_y))
                #print(event)
                print(image_width, image_heigt)
                #print(event.flipped)
                pygame.display.update()


预览图大概是这样:

Pygame鼠标进行图片的移动与缩放案例详解

如需直接运行就直接把def move_image(pic_bottom,pic_upper,ssn)这句改成if __name__ == '__main__':并把对应的值传进对应的位置去 

到此这篇关于pygame鼠标进行图片的移动与缩放案例详解的文章就介绍到这了,更多相关pygame图片的移动与缩放内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持!