51 lines
1.5 KiB
GDScript3
51 lines
1.5 KiB
GDScript3
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extends Camera2D
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@onready var image_viewport_display = %ImageViewportDisplay
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var drag = false
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func _input(event):
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if event.is_action_pressed("zoom_out"):
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zoom_out()
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elif event.is_action_pressed("zoom_in"):
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zoom_in()
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if event.is_action_pressed("drag"):
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self.drag = true
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elif event.is_action_released("drag"):
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self.drag = false
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if self.drag && event is InputEventMouseMotion:
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self.global_position -= event.relative / self.zoom
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var old_zoom = self.zoom
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func _process(_delta: float) -> void:
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if self.zoom != old_zoom:
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image_viewport_display.update_zoom_texture_filter(self.zoom)
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image_viewport_display.material.set_shader_parameter("zoom_level", self.zoom)
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old_zoom = self.zoom
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func fit_image():
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if Filesystem.original_image != null:
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var image_size = Filesystem.original_image.get_size()
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var viewport_size = get_viewport_rect().size
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var zoomf = 1.0
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if viewport_size.x / image_size.x * image_size.y > viewport_size.y:
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zoomf = viewport_size.y / image_size.y / 1.25
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else:
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zoomf = viewport_size.x / image_size.x / 1.2
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self.zoom = Vector2(zoomf, zoomf)
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self.global_position = Vector2(0, 0)
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func zoom_in():
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var old_mouse_pos = get_global_mouse_position()
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self.zoom *= 1.2
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self.global_position += old_mouse_pos - get_global_mouse_position()
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func zoom_out():
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var old_mouse_pos = get_global_mouse_position()
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self.zoom *= 1/1.2
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self.global_position += old_mouse_pos - get_global_mouse_position()
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func _on_fit_image_button_pressed():
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fit_image()
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