93 lines
2.4 KiB
Python
93 lines
2.4 KiB
Python
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#!/usr/bin/env python
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""" pygame.examples.prevent_display_stretching
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Prevent display stretching on Windows.
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On some computers, the display environment can be configured to stretch
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all windows so that they will not appear too small on the screen for
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the user. This configuration is especially common on high-DPI displays.
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pygame graphics appear distorted when automatically stretched by the
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display environment. This script demonstrates a technique for preventing
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this stretching and distortion.
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Limitations:
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This script makes an API call that is only available on Windows (versions
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Vista and newer).
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"""
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# Ensure that the computer is running Windows Vista or newer
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import os
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import sys
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# game constants
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TEXTCOLOR = "green"
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BACKGROUNDCOLOR = "black"
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AXISCOLOR = "white"
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if os.name != "nt" or sys.getwindowsversion()[0] < 6:
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raise NotImplementedError("this script requires Windows Vista or newer")
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import pygame as pg
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import ctypes
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# Determine whether or not the user would like to prevent stretching
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if os.path.basename(sys.executable) == "pythonw.exe":
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selection = "y"
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else:
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selection = None
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while selection not in ("y", "n"):
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selection = input("Prevent stretching? (y/n): ").strip().lower()
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if selection == "y":
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msg = "Stretching is prevented."
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else:
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msg = "Stretching is not prevented."
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# Prevent stretching
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if selection == "y":
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user32 = ctypes.windll.user32
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user32.SetProcessDPIAware()
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# Show screen
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pg.display.init()
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RESOLUTION = (350, 350)
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screen = pg.display.set_mode(RESOLUTION)
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# Render message onto a surface
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pg.font.init()
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font = pg.font.Font(None, 36)
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msg_surf = font.render(msg, 1, TEXTCOLOR)
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res_surf = font.render("Intended resolution: %ix%i" % RESOLUTION, 1, TEXTCOLOR)
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# Control loop
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running = True
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clock = pg.time.Clock()
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counter = 0
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while running:
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for event in pg.event.get():
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if event.type == pg.QUIT:
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running = False
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screen.fill(BACKGROUNDCOLOR)
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# Draw lines which will be blurry if the window is stretched
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# or clear if the window is not stretched.
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pg.draw.line(screen, AXISCOLOR, (0, counter), (RESOLUTION[0] - 1, counter))
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pg.draw.line(screen, AXISCOLOR, (counter, 0), (counter, RESOLUTION[1] - 1))
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# Blit message onto screen surface
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msg_blit_rect = screen.blit(msg_surf, (0, 0))
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screen.blit(res_surf, (0, msg_blit_rect.bottom))
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clock.tick(10)
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pg.display.flip()
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counter += 1
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if counter == RESOLUTION[0]:
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counter = 0
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pg.quit()
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