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67 lines
2.6 KiB
67 lines
2.6 KiB
from __future__ import annotations |
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import typing |
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from dataclasses import dataclass, field |
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import pygame |
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from config import CHAT_SELECTOR_WIDTH, HEIGHT, DARK_BLUE, WHITE, GREY, BLUE, font, CHAT_PREVIEW_HEIGHT, MEDIUM_BLUE |
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@dataclass |
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class ChatSelector: |
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""" |
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The widget with the list of chats. |
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It's a dataclass, it should be initialized using the `from_chats` classmethod |
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Attributes: |
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chats (List[dc.Chat]): list of all chats, where each chat is a native Rust struct Chat |
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active_chat (int): the index of the current selected chat |
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hovered_chat (int or None): the index of the current hovered chat |
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width (int): the width of this widget |
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height (int): the height of this widget |
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chat_height (int): height of one chat |
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""" |
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chats: typing.List['dc.Chat'] = field(default_factory=list) |
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active_chat: int = -1 |
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hovered_chat: typing.Optional[int] = None |
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width: int = CHAT_SELECTOR_WIDTH |
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height: int = HEIGHT |
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chat_height: int = CHAT_PREVIEW_HEIGHT |
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def render(self) -> pygame.Surface: |
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""" |
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Creates a pygame surface and draws the list of chats on it |
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:return: the surface with the chat selector |
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""" |
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surface: pygame.Surface = pygame.Surface((self.width, self.height)) |
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surface.fill(GREY) |
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for i, chat in enumerate(self.chats): |
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bg_color, text_color = DARK_BLUE, WHITE |
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if i == self.hovered_chat: |
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bg_color = MEDIUM_BLUE |
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if i == self.active_chat: |
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bg_color = BLUE |
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title_surface: pygame.Surface = font.render(chat.profile.name, True, text_color) |
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pygame.draw.rect(surface, bg_color, (3, i * self.chat_height + 1, self.width - 6, self.chat_height - 2)) |
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surface.blit(title_surface, (7, i * self.chat_height + 10)) |
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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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Process a click: select the necessary chat if this click is in the widget |
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:param event: a pygame event |
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""" |
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if event.type == pygame.MOUSEBUTTONUP and event.pos[0] < self.width: |
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self.active_chat = event.pos[1] // self.chat_height |
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self.hovered_chat = None |
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if event.type == pygame.MOUSEMOTION: |
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if 0 < event.pos[0] < self.width \ |
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and 0 < event.pos[1] < min(self.height, len(self.chats) * self.chat_height) - 2: |
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self.hovered_chat = event.pos[1] // self.chat_height |
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else: |
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self.hovered_chat = None |
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@classmethod |
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def from_chats(cls, chats: typing.List['dc.Chat'], **kwargs) -> ChatSelector: |
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return cls(chats, **kwargs) |