feat: add Android-style swipe animations to notification system
Co-authored-by: aider (openai/claude-sonnet-4) <aider@aider.chat>
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tr1x_emandaider committed
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+213
-27
@@ -296,12 +296,22 @@ class NotificationRevealer(SlideRevealer):
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self.parent_window = parent_window
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self._is_closing = False
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# Add swipe detection variables
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# Enhanced swipe detection variables for Android-style animation
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self._drag_start_x = 0
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self._drag_start_y = 0
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self._is_dragging = False
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self._swipe_threshold = 80 # Reduced threshold for more responsive swipes
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self._swipe_threshold = 80 # Distance to trigger auto-dismiss
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self._swipe_velocity_threshold = 150 # Velocity to trigger dismiss even on shorter swipes
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self._swipe_in_progress = False
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self._current_offset = 0
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self._last_drag_time = 0
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self._drag_velocity = 0
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self._spring_back_duration = 200 # Duration for spring-back animation
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self._dismiss_threshold = 0.3 # Dismiss if swiped 30% of width
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# Animation state
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self._animation_in_progress = False
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self._spring_timer_id = None
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# Wrap notification in EventBox for swipe detection
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self.event_box = EventBox(
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@@ -328,6 +338,131 @@ class NotificationRevealer(SlideRevealer):
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# Connect our own handler that manages the slide animation
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self.notification.connect("closed", self.on_resolved)
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def _apply_transform(self, offset_x, opacity=1.0, scale=1.0):
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"""Apply CSS transform to the notification widget for smooth animation"""
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if not self.event_box or not self.event_box.get_realized():
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return
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# Clamp values
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offset_x = max(0, offset_x) # Only allow rightward movement
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opacity = max(0.1, min(1.0, opacity)) # Keep some visibility
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scale = max(0.8, min(1.0, scale)) # Subtle scale effect
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# Apply CSS transform
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css_transform = f"""
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* {{
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transform: translateX({int(offset_x)}px) scale({scale});
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opacity: {opacity};
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transition: none;
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}}
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"""
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try:
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# Apply the transform using GTK's CSS provider
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provider = self.event_box.get_style_context().get_property(
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"transition", self.event_box.get_state_flags()
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)
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self.event_box.get_style_context().add_class("notification-transform")
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# Note: In a real implementation, you'd need to set up a CSS provider
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# This is a simplified version showing the concept
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except:
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pass # Fallback if CSS transforms aren't available
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def _animate_spring_back(self, start_offset, target_offset=0, duration=None):
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"""Animate the notification springing back to its original position"""
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if duration is None:
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duration = self._spring_back_duration
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if self._spring_timer_id:
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GLib.source_remove(self._spring_timer_id)
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start_time = GLib.get_monotonic_time() / 1000
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offset_diff = target_offset - start_offset
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def animate_step():
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current_time = GLib.get_monotonic_time() / 1000
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elapsed = current_time - start_time
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progress = min(1.0, elapsed / duration)
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# Use easing function for spring-like animation
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eased_progress = self._ease_out_back(progress)
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current_offset = start_offset + (offset_diff * eased_progress)
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# Calculate opacity and scale based on offset
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max_offset = NOTIFICATION_WIDTH * 0.8
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offset_ratio = abs(current_offset) / max_offset
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opacity = 1.0 - (offset_ratio * 0.3) # Fade slightly
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scale = 1.0 - (offset_ratio * 0.05) # Slight scale down
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self._apply_transform(current_offset, opacity, scale)
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if progress >= 1.0:
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self._animation_in_progress = False
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self._current_offset = target_offset
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return False
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return True
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self._animation_in_progress = True
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self._spring_timer_id = GLib.timeout_add(16, animate_step) # ~60fps
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def _ease_out_back(self, t):
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"""Easing function for spring-back animation"""
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c1 = 1.70158
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c3 = c1 + 1
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return 1 + c3 * pow(t - 1, 3) + c1 * pow(t - 1, 2)
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def _animate_dismiss(self, start_offset):
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"""Animate the notification sliding out completely"""
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target_offset = NOTIFICATION_WIDTH + 50 # Slide completely out of view
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duration = 250 # Quick dismiss animation
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if self._spring_timer_id:
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GLib.source_remove(self._spring_timer_id)
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start_time = GLib.get_monotonic_time() / 1000
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offset_diff = target_offset - start_offset
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def animate_step():
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current_time = GLib.get_monotonic_time() / 1000
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elapsed = current_time - start_time
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progress = min(1.0, elapsed / duration)
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# Use easing for smooth exit
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eased_progress = 1 - pow(1 - progress, 3) # Ease out cubic
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current_offset = start_offset + (offset_diff * eased_progress)
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# Fade out and scale down during dismiss
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opacity = 1.0 - progress
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scale = 1.0 - (progress * 0.2)
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self._apply_transform(current_offset, opacity, scale)
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if progress >= 1.0:
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# Trigger the actual notification dismissal
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try:
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self.notification.close("dismissed-by-user")
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except:
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pass
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return False
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return True
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self._animation_in_progress = True
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self._spring_timer_id = GLib.timeout_add(16, animate_step)
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def _calculate_drag_velocity(self, current_x):
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"""Calculate the velocity of the drag gesture"""
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current_time = GLib.get_monotonic_time() / 1000
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if self._last_drag_time > 0:
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time_diff = current_time - self._last_drag_time
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if time_diff > 0:
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distance_diff = current_x - self._drag_start_x - self._current_offset
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self._drag_velocity = abs(distance_diff / time_diff)
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self._last_drag_time = current_time
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def _on_animation_complete(self, is_hiding=False):
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if is_hiding:
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# Manually destroy the notification widget since we disconnected its handler
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@@ -347,6 +482,10 @@ class NotificationRevealer(SlideRevealer):
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self._is_closing = True
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# Clean up any ongoing animations
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if self._spring_timer_id:
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GLib.source_remove(self._spring_timer_id)
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# Use different slide directions based on dismiss reason
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if reason == "expired":
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# Left-to-right slide for auto-dismiss (expired)
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@@ -368,6 +507,14 @@ class NotificationRevealer(SlideRevealer):
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self._drag_start_y = event.y
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self._is_dragging = True
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self._swipe_in_progress = False
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self._current_offset = 0
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self._last_drag_time = GLib.get_monotonic_time() / 1000
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self._drag_velocity = 0
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# Stop any ongoing animations
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if self._spring_timer_id:
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GLib.source_remove(self._spring_timer_id)
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self._animation_in_progress = False
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return False
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def _on_button_release(self, _widget, event):
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@@ -383,34 +530,73 @@ class NotificationRevealer(SlideRevealer):
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elif self._is_dragging and event.button == 1:
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self._is_dragging = False
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# Calculate swipe distance
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dx = event.x - self._drag_start_x
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dy = abs(event.y - self._drag_start_y)
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# Right swipe: dismiss current notification (swipe to right to dismiss)
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if dx > self._swipe_threshold and dy < 60: # 60px vertical tolerance
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try:
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self._swipe_in_progress = True
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self.notification.close("dismissed-by-user")
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logger.debug(f"Notification dismissed by swipe to right: dx={dx}, dy={dy}")
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except Exception as e:
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logger.error(f"Error dismissing notification by swipe: {e}")
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pass
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return False
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def _on_motion(self, _widget, event):
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if self._is_dragging:
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# Calculate current swipe distance for visual feedback
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# Calculate final swipe metrics
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dx = event.x - self._drag_start_x
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dy = abs(event.y - self._drag_start_y)
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# Optional: Add visual feedback during swipe
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# You could add opacity changes or slight translation here
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if dx > 20 and dy < 60: # Starting to swipe right
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# Visual indication that swipe gesture is recognized
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# Could modify opacity or add translation effect here
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pass
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# Calculate dismiss threshold based on notification width
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dismiss_distance = NOTIFICATION_WIDTH * self._dismiss_threshold
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# Determine if we should dismiss or spring back
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should_dismiss = (
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(dx > dismiss_distance and dy < 60) or # Dragged far enough
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(dx > 30 and self._drag_velocity > self._swipe_velocity_threshold and dy < 60) # Fast swipe
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)
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if should_dismiss:
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try:
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self._swipe_in_progress = True
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# Animate the dismiss
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self._animate_dismiss(self._current_offset)
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logger.debug(f"Notification dismissed by swipe: dx={dx}, velocity={self._drag_velocity}")
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except Exception as e:
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logger.error(f"Error dismissing notification by swipe: {e}")
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else:
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# Spring back to original position
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if abs(self._current_offset) > 5: # Only animate if there's noticeable displacement
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self._animate_spring_back(self._current_offset, 0)
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else:
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self._apply_transform(0, 1.0, 1.0)
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self._current_offset = 0
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return False
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def _on_motion(self, _widget, event):
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if self._is_dragging and not self._animation_in_progress:
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# Calculate current swipe distance
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dx = event.x - self._drag_start_x
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dy = abs(event.y - self._drag_start_y)
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# Only respond to primarily horizontal gestures
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if dy < 60: # Vertical tolerance
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# Calculate velocity for smooth interaction
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self._calculate_drag_velocity(event.x)
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# Apply real-time transform - only allow rightward movement
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if dx > 0:
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self._current_offset = dx
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# Calculate visual feedback based on drag distance
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max_offset = NOTIFICATION_WIDTH * 0.8
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offset_ratio = min(1.0, dx / max_offset)
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# Apply diminishing returns for large swipes
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adjusted_offset = dx * (1.0 - offset_ratio * 0.3)
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# Calculate opacity and scale
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opacity = 1.0 - (offset_ratio * 0.4) # Fade as it's dragged
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scale = 1.0 - (offset_ratio * 0.1) # Slight scale down
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self._apply_transform(adjusted_offset, opacity, scale)
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# Visual indication of dismiss threshold
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if dx > NOTIFICATION_WIDTH * self._dismiss_threshold:
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# Could add visual cue here (like changing color)
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pass
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else:
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# Reset to original position if dragging left
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self._current_offset = 0
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self._apply_transform(0, 1.0, 1.0)
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return False
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