From 0368c5b09d2edcf327af7bafeebebcf6330a710b Mon Sep 17 00:00:00 2001
From: cutealien <cutealien@dfc29bdd-3216-0410-991c-e03cc46cb475>
Date: Tue, 1 Dec 2020 13:42:44 +0000
Subject: [PATCH] IGUIEnvironment::drawAll has now a parameter to allow
 disabling the automatic resize to driver screensize. That makes it easier to
 use partial screens, while using automatic alignment. Default is still
 automatic resizing as before, thought it got changed a bit as it looked a bit
 strange. Before it only set the lower-right corner, but compared to driver
 screensizes, so it behaved a bit strange when the leftTop corner of the
 rootGuiElement was changed (different than when the rightBottom corner was
 set). Could be the idea before was that only clipping matters.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6163 dfc29bdd-3216-0410-991c-e03cc46cb475
---
 changes.txt                         |  1 +
 include/IGUIEnvironment.h           |  4 +++-
 source/Irrlicht/CGUIEnvironment.cpp | 15 +++++++--------
 source/Irrlicht/CGUIEnvironment.h   |  2 +-
 tests/tests-last-passed-at.txt      |  4 ++--
 5 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/changes.txt b/changes.txt
index 408a87b..02bdce4 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,5 +1,6 @@
 --------------------------
 Changes in 1.9 (not yet released)
+- IGUIEnvironment::drawAll has now a parameter to allow disabling automatic resize to screensize. Makes it easier to use partial screens with full alignment support.
 - No longer try to set WM_QUIT when using an external Window on Win32. 
   Thx @Marko Mahnic for the patch (https://sourceforge.net/p/irrlicht/bugs/449)
 - ply meshloader now also supports textures with uv-labels named texture_u/texture_v. 
diff --git a/include/IGUIEnvironment.h b/include/IGUIEnvironment.h
index 695b41b..b670d96 100644
--- a/include/IGUIEnvironment.h
+++ b/include/IGUIEnvironment.h
@@ -74,7 +74,9 @@ class IGUIEnvironment : public virtual IReferenceCounted
 public:
 
 	//! Draws all gui elements by traversing the GUI environment starting at the root node.
-	virtual void drawAll() = 0;
+	/** \param  When true ensure the GuiEnvironment (aka the RootGUIElement) has the same size as the current driver screensize. 
+	            Can be set to false to control that size yourself, p.E when not the full size should be used for UI. */
+	virtual void drawAll(bool useScreenSize=true) = 0;
 
 	//! Sets the focus to an element.
 	/** Causes a EGET_ELEMENT_FOCUS_LOST event followed by a
diff --git a/source/Irrlicht/CGUIEnvironment.cpp b/source/Irrlicht/CGUIEnvironment.cpp
index e29195b..0f0dc18 100644
--- a/source/Irrlicht/CGUIEnvironment.cpp
+++ b/source/Irrlicht/CGUIEnvironment.cpp
@@ -191,19 +191,18 @@ void CGUIEnvironment::loadBuiltInFont()
 
 
 //! draws all gui elements
-void CGUIEnvironment::drawAll()
+void CGUIEnvironment::drawAll(bool useScreenSize)
 {
-	if (Driver)
+	if (useScreenSize && Driver)
 	{
 		core::dimension2d<s32> dim(Driver->getScreenSize());
 		if (AbsoluteRect.LowerRightCorner.X != dim.Width ||
-			AbsoluteRect.LowerRightCorner.Y != dim.Height)
+			AbsoluteRect.UpperLeftCorner.X != 0 ||
+			AbsoluteRect.LowerRightCorner.Y != dim.Height ||
+			AbsoluteRect.UpperLeftCorner.Y != 0
+			)
 		{
-			// resize gui environment
-			DesiredRect.LowerRightCorner = dim;
-			AbsoluteClippingRect = DesiredRect;
-			AbsoluteRect = DesiredRect;
-			updateAbsolutePosition();
+			setRelativePosition(core::recti(0,0,dim.Width, dim.Height));
 		}
 	}
 
diff --git a/source/Irrlicht/CGUIEnvironment.h b/source/Irrlicht/CGUIEnvironment.h
index 58b7f54..f8b0323 100644
--- a/source/Irrlicht/CGUIEnvironment.h
+++ b/source/Irrlicht/CGUIEnvironment.h
@@ -31,7 +31,7 @@ public:
 	virtual ~CGUIEnvironment();
 
 	//! draws all gui elements
-	virtual void drawAll() _IRR_OVERRIDE_;
+	virtual void drawAll(bool useScreenSize) _IRR_OVERRIDE_;
 
 	//! returns the current video driver
 	virtual video::IVideoDriver* getVideoDriver() const _IRR_OVERRIDE_;
diff --git a/tests/tests-last-passed-at.txt b/tests/tests-last-passed-at.txt
index faa44d9..15f3146 100644
--- a/tests/tests-last-passed-at.txt
+++ b/tests/tests-last-passed-at.txt
@@ -1,4 +1,4 @@
 Tests finished. 72 tests of 72 passed.
-Compiled as RELEASE
-Test suite pass at GMT Tue Nov 10 18:42:40 2020
+Compiled as DEBUG
+Test suite pass at GMT Tue Dec 01 13:34:31 2020