From da356eca0f386c94ba38677a63c6215bf0b4f590 Mon Sep 17 00:00:00 2001
From: Paulb23 <p_batty@hotmail.co.uk>
Date: Mon, 7 Mar 2016 02:32:51 +0000
Subject: [PATCH] Enabled scrolling past end of file

(cherry picked from commit f19eea2f2d01cdfd671f16436eb639b46908b150)
---
 scene/gui/text_edit.cpp                       | 6 +++++-
 scene/gui/text_edit.h                         | 5 +++++
 tools/editor/editor_settings.cpp              | 2 ++
 tools/editor/plugins/script_editor_plugin.cpp | 2 ++
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 5d7436517f7..bb15659e704 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -290,7 +290,10 @@ void TextEdit::_update_scrollbars() {
 	int hscroll_rows = ((hmin.height-1)/get_row_height())+1;
 	int visible_rows = get_visible_rows();
 	int total_rows = text.size();
-	
+	if (scroll_past_end_of_file_enabled) {
+		total_rows += get_visible_rows() - 1;
+	}
+
 	int vscroll_pixels = v_scroll->get_combined_minimum_size().width;
 	int visible_width = size.width - cache.style_normal->get_minimum_size().width;
 	int total_width = text.get_max_width() + vmin.x;
@@ -3969,6 +3972,7 @@ TextEdit::TextEdit()  {
 	tooltip_obj=NULL;
 	line_numbers=false;
 	next_operation_is_complex=false;
+	scroll_past_end_of_file_enabled=false;
 	auto_brace_completion_enabled=false;
 	brace_matching_enabled=false;
 	auto_indent=false;
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index 44e780aaf3e..8d0efc406a0 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -211,6 +211,7 @@ class TextEdit : public Control  {
 	bool undo_enabled;
 	bool line_numbers;
 	
+	bool scroll_past_end_of_file_enabled;
 	bool auto_brace_completion_enabled;
 	bool brace_matching_enabled;
 	bool auto_indent;
@@ -322,6 +323,10 @@ public:
     void set_line(int line, String new_text);
 	void backspace_at_cursor();
 	
+	inline void set_scroll_pass_end_of_file(bool p_enabled) {
+		scroll_past_end_of_file_enabled = p_enabled;
+		update();
+	}
 	inline void set_auto_brace_completion(bool p_enabled) {
 		auto_brace_completion_enabled = p_enabled;
 	}
diff --git a/tools/editor/editor_settings.cpp b/tools/editor/editor_settings.cpp
index f8a4ecc8d9f..e70a50788f6 100644
--- a/tools/editor/editor_settings.cpp
+++ b/tools/editor/editor_settings.cpp
@@ -482,6 +482,8 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	set("text_editor/brace_mismatch_color",Color(1,0.2,0.2));
 	set("text_editor/current_line_color",Color(0.3,0.5,0.8,0.15));
 
+	set("text_editor/scroll_past_end_of_file", false);
+
 	set("text_editor/idle_parse_delay",2);
 	set("text_editor/create_signal_callbacks",true);
 	set("text_editor/autosave_interval_secs",0);
diff --git a/tools/editor/plugins/script_editor_plugin.cpp b/tools/editor/plugins/script_editor_plugin.cpp
index e3dce0b36a3..4be8b3f95ce 100644
--- a/tools/editor/plugins/script_editor_plugin.cpp
+++ b/tools/editor/plugins/script_editor_plugin.cpp
@@ -1927,6 +1927,7 @@ void ScriptEditor::edit(const Ref<Script>& p_script) {
 	ScriptTextEditor *ste = memnew( ScriptTextEditor );
 	ste->set_edited_script(p_script);
 	ste->get_text_edit()->set_tooltip_request_func(this,"_get_debug_tooltip",ste);
+	ste->get_text_edit()->set_scroll_pass_end_of_file(EditorSettings::get_singleton()->get("text_editor/scroll_past_end_of_file"));
 	ste->get_text_edit()->set_auto_brace_completion(EditorSettings::get_singleton()->get("text_editor/auto_brace_complete"));
 	ste->get_text_edit()->set_callhint_settings(
 		EditorSettings::get_singleton()->get("text_editor/put_callhint_tooltip_below_current_line"),
@@ -2064,6 +2065,7 @@ void ScriptEditor::_editor_settings_changed() {
 			continue;
 
 		ste->get_text_edit()->set_auto_brace_completion(EditorSettings::get_singleton()->get("text_editor/auto_brace_complete"));
+		ste->get_text_edit()->set_scroll_pass_end_of_file(EditorSettings::get_singleton()->get("text_editor/scroll_past_end_of_file"));
 	}
 
 }