Do not attempt to resize text box to zero-width

client/widgets/TextControls.cpp

@@ -376,6 +376,7 @@ void CTextBox::setText(const std::string & text)
 	{
 		// decrease width again if slider still used
 		label->pos.w = pos.w - 32;
+		assert(label->pos.w > 0);
 		label->setText(text);
 		slider->setAmount(label->textSize.y);
 	}
@@ -383,6 +384,7 @@ void CTextBox::setText(const std::string & text)
 	{
 		// create slider and update widget
 		label->pos.w = pos.w - 32;
+		assert(label->pos.w > 0);
 		label->setText(text);
 
 		OBJECT_CONSTRUCTION_CUSTOM_CAPTURING(255 - DISPOSE);

client/windows/CMessage.cpp

@@ -120,6 +120,10 @@ SDL_Surface * CMessage::drawDialogBox(int w, int h, PlayerColor playerColor)
 
 std::vector<std::string> CMessage::breakText( std::string text, size_t maxLineWidth, EFonts font )
 {
+	assert(maxLineWidth != 0);
+	if (maxLineWidth == 0)
+		return { text };
+
 	std::vector<std::string> ret;
 
 	boost::algorithm::trim_right_if(text,boost::algorithm::is_any_of(std::string(" ")));

client/windows/InfoWindows.cpp

@@ -150,7 +150,9 @@ CInfoWindow::CInfoWindow(std::string Text, PlayerColor player, const TCompsInfo
 	text = std::make_shared<CTextBox>(Text, Rect(0, 0, 250, 100), 0, FONT_MEDIUM, ETextAlignment::CENTER, Colors::WHITE);
 	if(!text->slider)
 	{
-		text->resize(text->label->textSize);
+		int finalWidth = std::min(250, text->label->textSize.x + 32);
+		int finalHeight = text->label->textSize.y;
+		text->resize(Point(finalWidth, finalHeight));
 	}
 
 	if(buttons.size() == 1)