mirror of
https://github.com/Relintai/MemR.git
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104 lines
2.2 KiB
GDScript
104 lines
2.2 KiB
GDScript
extends PanelContainer
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export(NodePath) var zoom_slider_path : NodePath
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var mouse_down : bool = false
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var mouse_pointer : int = 0
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var hscrollbar : HScrollBar
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var vscrollbar : VScrollBar
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var zoom : float = 1
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var _zoom_slider : VSlider
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func update_zoom_to_fit_width() -> void:
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var cs : Vector2 = get_tex_size()
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if cs.x < 0.0000001 || cs.y < 0.0000001:
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_zoom_slider.value = 1
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return
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var max_axis : int = cs.max_axis()
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if max_axis == Vector2.AXIS_X:
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_zoom_slider.value = get_parent().rect_size.x / cs.x
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else:
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_zoom_slider.value = get_parent().rect_size.y / cs.y
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func _gui_input(event: InputEvent) -> void:
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if event.is_echo():
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return
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if event is InputEventMouseButton:
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var iemb : InputEventMouseButton = event
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if iemb.button_index == BUTTON_WHEEL_UP:
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_zoom_slider.value += 0.03
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elif iemb.button_index == BUTTON_WHEEL_DOWN:
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_zoom_slider.value -= 0.03
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else:
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if mouse_down && mouse_pointer != iemb.button_index:
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return
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mouse_down = iemb.pressed
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mouse_pointer == iemb.button_index
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accept_event()
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elif event is InputEventMouseMotion:
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var iemm : InputEventMouseMotion = event
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if !mouse_down:
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return
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hscrollbar.value -= iemm.relative.x
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vscrollbar.value -= iemm.relative.y
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accept_event()
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func _notification(what: int) -> void:
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if what == NOTIFICATION_READY:
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var sc : ScrollContainer = get_parent()
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hscrollbar = sc.get_h_scrollbar()
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vscrollbar = sc.get_v_scrollbar()
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_zoom_slider = get_node(zoom_slider_path)
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func udpate_minimum_size() -> void:
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var active_node : Control
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for c in get_children():
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if c.is_visible_in_tree():
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active_node = c
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break
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var cs : Vector2 = get_tex_size()
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cs.x *= zoom
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cs.y *= zoom
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rect_min_size = cs
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func get_tex_size() -> Vector2:
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var active_node : Control
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for c in get_children():
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if c.is_visible_in_tree():
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active_node = c
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break
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var cs : Vector2 = Vector2(0, 0)
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if active_node is TextureRect:
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var tr : TextureRect = active_node as TextureRect
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cs = Vector2(tr.texture.get_width(), tr.texture.get_height())
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return cs
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func _on_ZoomSlider_value_changed(value: float) -> void:
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if value < 0.00000001:
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value = 0.00000001
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zoom = value
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udpate_minimum_size()
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