From d7c749c08ec10739d768ebc4658942b0993886b6 Mon Sep 17 00:00:00 2001
From: RodZill4 <rodzilla@free.fr>
Date: Fri, 27 Mar 2020 07:35:56 +0100
Subject: [PATCH] Added modifiers to float edit widget

---
 material_maker/widgets/float_edit.gd   | 58 ++++++++++++++++++++------
 material_maker/widgets/float_edit.tscn |  3 ++
 2 files changed, 49 insertions(+), 12 deletions(-)

diff --git a/material_maker/widgets/float_edit.gd b/material_maker/widgets/float_edit.gd
index a946365..767f995 100644
--- a/material_maker/widgets/float_edit.gd
+++ b/material_maker/widgets/float_edit.gd
@@ -8,7 +8,9 @@ export var step : float = 0.0 setget set_step
 
 var sliding : bool = false
 var start_position : float
+var last_position : float
 var start_value : float
+var modifiers : int
 var from_lower_bound : bool = false
 var from_upper_bound : bool = false
 
@@ -45,28 +47,60 @@ func do_update(update_text : bool = true) -> void:
 			else:
 				cursor.rect_position.x = 0
 
+func get_modifiers(event):
+	var modifiers = 0
+	if event.shift:
+		modifiers |= 1
+	if event.control:
+		modifiers |= 2
+	if event.alt:
+		modifiers |= 4
+	return modifiers
+
 func _on_LineEdit_gui_input(event : InputEvent) -> void:
 	if event is InputEventMouseButton and event.button_index == BUTTON_LEFT:
 		if event.is_pressed():
-			start_position = event.position.x
+			last_position = event.position.x
+			start_position = last_position
 			start_value = value
 			sliding = true
 			from_lower_bound = value <= min_value
 			from_upper_bound = value >= max_value
+			modifiers = get_modifiers(event)
 		else:
 			sliding = false
 	elif sliding and event is InputEventMouseMotion and event.button_mask == BUTTON_MASK_LEFT:
-		var delta : float = event.position.x-start_position
-		var v : float = start_value+sign(delta)*pow(abs(delta)*0.005, 2)*abs(max_value - min_value)
-		if step != 0:
-			v = min_value+floor((v - min_value)/step)*step
-		if !from_lower_bound and v < min_value:
-			v = min_value
-		if !from_upper_bound and v > max_value:
-			v = max_value
-		set_value(v)
-		select(0, 0)
-		emit_signal("value_changed", value)
+		var new_modifiers = get_modifiers(event)
+		if new_modifiers != modifiers:
+			start_position = last_position
+			start_value = value
+			modifiers = new_modifiers
+		else:
+			last_position = event.position.x
+			var delta : float = last_position-start_position
+			var current_step = step
+			if event.control:
+				delta *= 0.2
+			elif event.shift:
+				delta *= 5.0
+			if event.alt:
+				current_step *= 0.01
+			var v : float = start_value+sign(delta)*pow(abs(delta)*0.005, 2)*abs(max_value - min_value)
+			if current_step != 0:
+				v = min_value+floor((v - min_value)/current_step)*current_step
+			if !from_lower_bound and v < min_value:
+				v = min_value
+			if !from_upper_bound and v > max_value:
+				v = max_value
+			set_value(v)
+			select(0, 0)
+			emit_signal("value_changed", value)
+	elif event is InputEventKey and !event.echo:
+		match event.scancode:
+			KEY_SHIFT, KEY_CONTROL, KEY_ALT:
+				start_position = last_position
+				start_value = value
+				modifiers = get_modifiers(event)
 
 func _on_LineEdit_text_changed(new_text : String) -> void:
 	if new_text.is_valid_float():
diff --git a/material_maker/widgets/float_edit.tscn b/material_maker/widgets/float_edit.tscn
index d5a0b4f..a60fe9a 100644
--- a/material_maker/widgets/float_edit.tscn
+++ b/material_maker/widgets/float_edit.tscn
@@ -14,6 +14,9 @@ max_length = 20
 context_menu_enabled = false
 caret_blink = true
 script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
 
 [node name="Slider" type="ColorRect" parent="."]
 anchor_top = 1.0