2026-02-20 11:57:13 +00:00
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from PySide6.QtCore import QPointF, Signal
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from PySide6.QtGui import QColor
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from PySide6.QtWidgets import QWidget
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from .canvas_interaction import CanvasInteractionMixin
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from .canvas_render import CanvasRenderMixin
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from .canvas_state import CanvasStateMixin
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# QtSlicingCanvas: class definition for ScanSlicer behavior.
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2026-02-20 12:02:13 +00:00
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class QtSlicingCanvas(CanvasInteractionMixin, CanvasRenderMixin, CanvasStateMixin, QWidget):
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AUTO_FIT_SCALE = 0.95
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OFF_CANVAS_COLOR = QColor(38, 38, 38)
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CORNER_HANDLE_HIT_RADIUS = 12.0
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SIDE_HANDLE_HIT_RADIUS = 14.0
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SIDE_HANDLE_SIZE_ACTIVE = 11.0
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SIDE_HANDLE_SIZE_INACTIVE = 9.0
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active_slice_changed = Signal(int)
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# __init__: function definition for ScanSlicer behavior.
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def __init__(self, parent=None):
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super().__init__(parent)
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self.setMouseTracking(True)
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self.setMinimumSize(640, 480)
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self.zoom = 1.0
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self.image = None
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self.pan_offset = QPointF(0.0, 0.0)
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self.slices = []
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self.active_slice_index = None
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self.corner_dragging = None
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self.side_dragging = None
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self.rotation_dragging = None
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self.box_dragging = None
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self.rotate_handles_mode = False
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self.panning = False
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self.last_mouse_pos = QPointF(0.0, 0.0)
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self.user_transformed_view = False
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