57 lines
1.5 KiB
GDScript
57 lines
1.5 KiB
GDScript
extends SummerDayTool
|
|
class_name SummerDayZoomCanvasTool
|
|
|
|
|
|
var zoom_activated := false
|
|
var initial_transform: Transform2D
|
|
var initial_mouse_position: Vector2
|
|
|
|
|
|
func _init():
|
|
priority = 1
|
|
modifier_layer = 1
|
|
|
|
|
|
func _check_for_use(event: InputEvent, tool_context: SummerDayToolContext):
|
|
if event is InputEventMouseButton:
|
|
if event.button_index == BUTTON_LEFT:
|
|
if event.is_pressed() and event.shift:
|
|
initial_transform = tool_context.canvas_state.canvas_transform
|
|
initial_mouse_position = event.position
|
|
zoom_activated = true
|
|
else:
|
|
zoom_activated = false
|
|
elif event.factor != 0.0:
|
|
initial_transform = tool_context.canvas_state.canvas_transform
|
|
return true
|
|
|
|
if event is InputEventMouseMotion:
|
|
return zoom_activated
|
|
|
|
return false
|
|
|
|
|
|
func _run(event: InputEvent, tool_context: SummerDayToolContext):
|
|
var zoom_point
|
|
var zoom_strength
|
|
|
|
if event is InputEventMouseButton:
|
|
print(event.button_index)
|
|
print(event.button_mask)
|
|
print(event.factor)
|
|
print("\n")
|
|
zoom_point = event.position
|
|
zoom_strength = event.factor
|
|
if event.button_index == BUTTON_WHEEL_DOWN:
|
|
zoom_strength = -event.factor
|
|
if event is InputEventMouseMotion:
|
|
zoom_point = initial_mouse_position
|
|
zoom_strength = (event.position.x - initial_mouse_position.x) * 0.5
|
|
|
|
var canvas_transform = initial_transform
|
|
canvas_transform.origin -= zoom_point
|
|
var scale = pow(1.03, zoom_strength)
|
|
canvas_transform = canvas_transform.scaled(Vector2(scale, scale))
|
|
canvas_transform.origin += zoom_point
|
|
tool_context.canvas_state.canvas_transform = canvas_transform
|