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77 lines
2.9 KiB
77 lines
2.9 KiB
import time |
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import typing |
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import pygame |
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from config import font, MESSAGE_HEIGHT, WIDTH, CHAT_SELECTOR_WIDTH, HEIGHT, WHITE, DARKER_BLUE, GREY |
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from utils import render_text |
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from dataclasses import dataclass |
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@dataclass |
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class TextField: |
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""" |
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Field for message input |
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""" |
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value: str = '' |
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width: int = WIDTH - CHAT_SELECTOR_WIDTH - 140 |
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height: int = MESSAGE_HEIGHT * 1.5 |
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top_left_corner: typing.Tuple[int, int] = (CHAT_SELECTOR_WIDTH, HEIGHT - MESSAGE_HEIGHT * 2) |
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is_focused: bool = False |
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placeholder: str = '' |
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cursor_position: int = 0 |
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def render(self) -> pygame.Surface: |
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""" |
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Render the text field onto a pygame surface |
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:return: a surface with the field |
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""" |
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surface = pygame.Surface((self.width, self.height)) |
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surface.fill(WHITE) |
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padding = 5 |
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pygame.draw.rect(surface, DARKER_BLUE, (padding, padding, self.width - padding * 2, self.height - padding * 2)) |
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if not self.value and self.placeholder: |
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placeholder_text: pygame.Surface = font.render(self.placeholder, True, GREY) |
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surface.blit( |
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placeholder_text, |
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( |
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(self.width - placeholder_text.get_width()) // 2, |
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(self.height - placeholder_text.get_height()) // 2 |
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) |
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) |
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if self.value: |
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render_text(surface, (10, 10), font, self.value, WHITE, self.cursor_position if time.time() % 1 < 0.5 else None) |
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return surface |
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def process_event(self, event: pygame.event.Event): |
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""" |
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Handle a typing event or a click (to focus) |
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:param event: a pygame event |
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""" |
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# If we have a click, we should focus the field if the click was inside or unfocus if it was outside |
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if event.type == pygame.MOUSEBUTTONUP: |
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self.is_focused = self.top_left_corner[0] <= event.pos[0] < self.top_left_corner[0] + self.width \ |
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and self.top_left_corner[1] <= event.pos[1] < self.top_left_corner[1] + self.height |
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if self.is_focused and hasattr(event, 'key') and event.type == 768: |
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if event.key == pygame.K_BACKSPACE: |
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self.value = self.value[:-1] |
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self.cursor_position -= 1 |
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elif event.key == pygame.K_LEFT: |
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self.cursor_position -= 1 |
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elif event.key == pygame.K_RIGHT: |
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self.cursor_position += 1 |
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elif event.unicode: |
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self.value = self.value[:self.cursor_position] + event.unicode + self.value[self.cursor_position:] |
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self.cursor_position += 1 |
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self.cursor_position = max(0, min(self.cursor_position, len(self.value))) |
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def collect(self) -> str: |
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""" |
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Get the current value and clear the field |
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:return: the value of the text input |
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""" |
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value = self.value |
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self.value = '' |
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self.cursor_position = 0 |
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return value
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