Patch by Joshua R. Elsasser:

Implement DECALN escape sequence.

Resolves ticket #4658. Thanks!



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33325 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/terminal/BasicTerminalBuffer.cpp

@@ -578,6 +578,28 @@ BasicTerminalBuffer::InsertChar(UTF8Char c, uint32 width, uint32 attributes)
 }
 
 
+void
+BasicTerminalBuffer::FillScreen(UTF8Char c, uint32 width, uint32 attributes)
+{
+	// TODO: Check if this method can be removed completely
+	//int width = CodeConv::UTF8GetFontWidth(c.bytes);
+	if ((int32)width == FULL_WIDTH)
+		attributes |= A_WIDTH;
+
+	fSoftWrappedCursor = false;
+
+	for (int32 y = 0; y < fHeight; y++) {
+		TerminalLine *line = _LineAt(y);
+		for (int32 x = 0; x < fWidth / (int32)width; x++) {
+			line->cells[x].character = c;
+			line->cells[x].attributes = attributes;
+		}
+		line->length = fWidth / width;
+	}
+
+	_Invalidate(0, fHeight - 1);
+}
+
 void
 BasicTerminalBuffer::InsertCR()
 {

src/apps/terminal/BasicTerminalBuffer.h

@@ -103,6 +103,7 @@ public:
 									uint32 attributes);
 	inline	void				InsertChar(const char* c, int32 length,
 									uint32 width, uint32 attributes);
+			void				FillScreen(UTF8Char c, uint32 width, uint32 attr);
 
 			void				InsertCR();
 			void				InsertLF();

src/apps/terminal/TermParse.cpp

@@ -821,10 +821,7 @@ TermParse::EscParse()
 
 				case CASE_DECALN:
 					/* DECALN */
-					//      if(screen->cursor_state)
-					//	HideCursor();
-					//      ScrnRefresh(screen, 0, 0, screen->max_row + 1,
-					//		  screen->max_col + 1, False);
+					fBuffer->FillScreen(UTF8Char('E'), 1, 0);
 					parsestate = groundtable;
 					break;