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menu
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Animated color change on button hover

This commit is contained in:
Michał Rudowicz 2024-09-10 17:10:06 +02:00
parent 1fc3a01413
commit 3b9e279db1
1 changed files with 24 additions and 2 deletions
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26
menu.py
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@ -36,6 +36,7 @@ class Action(TypedDict):
class Button: class Button:
PRESS_OFFSET = 2 PRESS_OFFSET = 2
HOVER_ANIMATION_STEPS = 5
def __init__(self, position: pygame.Rect, text: str, cbk: Callable[[], None]): def __init__(self, position: pygame.Rect, text: str, cbk: Callable[[], None]):
self.position: pygame.Rect self.position: pygame.Rect
@ -47,6 +48,27 @@ class Button:
self.text_pos = pygame.Rect((self.position.left + (self.position.width - text_rect.width)/2), self.text_pos = pygame.Rect((self.position.left + (self.position.width - text_rect.width)/2),
(self.position.top + (self.position.height - text_rect.height)/2), (self.position.top + (self.position.height - text_rect.height)/2),
text_rect.width, text_rect.height) text_rect.width, text_rect.height)
self.bg_color = pygame.Color("black")
self.hover_bg_color = pygame.Color("violetred4")
self.hover_animation_step = 0
def get_bg_color(self):
if self.pos_is_inside(pygame.mouse.get_pos()):
self.hover_animation_step = min(self.hover_animation_step + 1, self.HOVER_ANIMATION_STEPS)
else:
self.hover_animation_step = max(self.hover_animation_step - 1, 0)
if self.hover_animation_step == self.HOVER_ANIMATION_STEPS:
return self.hover_bg_color
if self.hover_animation_step == 0:
return self.bg_color
new_color = tuple(map(lambda v: v[0] + (((v[1]-v[0])/self.HOVER_ANIMATION_STEPS)*self.hover_animation_step),
zip(self.bg_color, self.hover_bg_color)))
return new_color
def needs_redrawing(self) -> bool:
return self.hover_animation_step == self.HOVER_ANIMATION_STEPS or self.hover_animation_step == 0
def set_position(self, position: pygame.Rect): def set_position(self, position: pygame.Rect):
self.position = position self.position = position
@ -64,7 +86,7 @@ class Button:
return self.text_pos return self.text_pos
def draw(self, screen: pygame.Surface): def draw(self, screen: pygame.Surface):
pygame.draw.rect(screen, "black", self.get_position(), 0) pygame.draw.rect(screen, self.get_bg_color(), self.get_position(), 0)
self.font.render_to(screen, self.get_text_pos(), self.text, fgcolor="pink") self.font.render_to(screen, self.get_text_pos(), self.text, fgcolor="pink")
def pos_is_inside(self, pos: Tuple) -> bool: def pos_is_inside(self, pos: Tuple) -> bool:
@ -130,7 +152,7 @@ class MenuBoard(IBoard):
b.handle_event(event) b.handle_event(event)
def draw(self, screen: pygame.Surface, force_redraw: bool): def draw(self, screen: pygame.Surface, force_redraw: bool):
if force_redraw: if force_redraw or any(map(Button.needs_redrawing, self.buttons)):
screen.fill(self.bg_color) screen.fill(self.bg_color)
for b in self.buttons: for b in self.buttons:
b.draw(screen) b.draw(screen)