GUI: Add checks in Widget::getBossClipRect()

Prints a warning if clipping area is invalid and fixes it.

3 files changed, 26 insertions, 20 deletions

diff --git a/gui/object.cpp b/gui/object.cpp
index 2d9e9597f5..de66d95492 100644
--- a/gui/object.cpp
+++ b/gui/object.cpp
@@ -44,21 +44,6 @@ void GuiObject::reflowLayout() {
 		if (!g_gui.xmlEval()->getWidgetData(_name, _x, _y, _w, _h)) {
 			error("Could not load widget position for '%s'", _name.c_str());
 		}
-
-		/*
-		if (_x < 0)
-			error("Widget <%s> has x < 0 (%d)", _name.c_str(), _x);
-		if (_x >= g_gui.getWidth())
-			error("Widget <%s> has x > %d (%d)", _name.c_str(), g_gui.getWidth(), _x);
-		if (_x + _w > g_gui.getWidth())
-			error("Widget <%s> has x + w > %d (%d)", _name.c_str(), g_gui.getWidth(), _x + _w);
-		if (_y < 0)
-			error("Widget <%s> has y < 0 (%d)", _name.c_str(), _y);
-		if (_y >= g_gui.getHeight())
-			error("Widget <%s> has y > %d (%d)", _name.c_str(), g_gui.getHeight(), _y);
-		if (_y + _h > g_gui.getHeight())
-			error("Widget <%s> has y + h > %d (%d)", _name.c_str(), g_gui.getHeight(), _y + _h);
-			*/
 	}
 }
 
diff --git a/gui/widget.cpp b/gui/widget.cpp
index 56b7e91455..32ca0223c5 100644
--- a/gui/widget.cpp
+++ b/gui/widget.cpp
@@ -53,6 +53,31 @@ void Widget::init() {
 	_boss->_firstWidget = this;
 }
 
+Common::Rect Widget::getBossClipRect() const {
+	int bx = _boss->getAbsX();
+	int by = _boss->getAbsY();
+	Common::Rect result = Common::Rect(bx, by, bx + _boss->getWidth(), by + _boss->getHeight());
+	bool needsClipping = false;
+
+	//check whether clipping area is inside the screen
+	if (result.left < 0 && (needsClipping = true))
+		warning("Widget <%s> has clipping area x < 0 (%d)", _name.c_str(), result.left);
+	if (result.left >= g_gui.getWidth() && (needsClipping = true))
+		warning("Widget <%s> has clipping area x > %d (%d)", _name.c_str(), g_gui.getWidth(), result.left);
+	if (result.right > g_gui.getWidth() && (needsClipping = true))
+		warning("Widget <%s> has clipping area x + w > %d (%d)", _name.c_str(), g_gui.getWidth(), result.right);
+	if (result.top < 0 && (needsClipping = true))
+		warning("Widget <%s> has clipping area y < 0 (%d)", _name.c_str(), result.top);
+	if (result.top >= g_gui.getHeight() && (needsClipping = true))
+		warning("Widget <%s> has clipping area y > %d (%d)", _name.c_str(), g_gui.getHeight(), result.top);
+	if (result.bottom > g_gui.getHeight() && (needsClipping = true))
+		warning("Widget <%s> has clipping area y + h > %d (%d)", _name.c_str(), g_gui.getHeight(), result.bottom);
+
+	if (needsClipping)
+		result.clip(g_gui.getWidth(), g_gui.getHeight());
+	return result;
+}
+
 Widget::~Widget() {
 	delete _next;
 	_next = 0;
diff --git a/gui/widget.h b/gui/widget.h
index db801fa49b..0f4b300233 100644
--- a/gui/widget.h
+++ b/gui/widget.h
@@ -112,11 +112,7 @@ public:
 
 	virtual int16	getAbsX() const	{ return _x + _boss->getChildX(); }
 	virtual int16	getAbsY() const	{ return _y + _boss->getChildY(); }
-	virtual Common::Rect getBossClipRect() const {
-		int px = _boss->getAbsX();
-		int py = _boss->getAbsY();
-		return Common::Rect(px, py, px + _boss->getWidth(), py + _boss->getHeight());
-	}
+	virtual Common::Rect getBossClipRect() const;
 
 	virtual void setPos(int x, int y) { _x = x; _y = y; }
 	virtual void setSize(int w, int h) { _w = w; _h = h; }