1 files changed, 120 insertions, 0 deletions
diff --git a/libs/surfaces/tranzport/lcd.cc b/libs/surfaces/tranzport/lcd.cc
new file mode 100644
index 0000000000..88f9ea36d6
--- /dev/null
+++ b/libs/surfaces/tranzport/lcd.cc
@@ -0,0 +1,120 @@
+/*
+ *   Copyright (C) 2006 Paul Davis 
+ *   Copyright (C) 2007 Michael Taht
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *  
+ *   */
+
+#include <tranzport_control_protocol.h>
+
+// doing these functions made me realize that screen_invalid should be lcd_isdamaged FIXME soon
+
+bool TranzportControlProtocol::lcd_damage() 
+{
+	screen_invalidate();
+	return true;
+}
+
+bool TranzportControlProtocol::lcd_damage (int row, int col, int length)
+{
+	std::bitset<ROWS*COLUMNS> mask1(0);
+	// there's an intrinsic to do this fast, darn it, or I'm just sleepy
+	for (int i = 0; i < length; i++) { mask1[i] = 1; }
+	std::bitset<ROWS*COLUMNS> mask(mask1 << (row*COLUMNS+col));
+	screen_invalid |= mask;
+	return true;
+}
+
+// Still working on the layering, arguably screen_invalid should be lcd_invalid
+// or vice versa
+
+bool TranzportControlProtocol::lcd_isdamaged () 
+{
+	if(screen_invalid.any()) {
+#if DEBUG_TRANZPORT > 5	
+		printf("LCD is damaged somewhere, should redraw it\n");
+#endif
+		return true;
+	}
+	return false;
+}
+
+bool TranzportControlProtocol::lcd_isdamaged (int row, int col, int length)
+{
+	// there's an intrinsic to do this fast, darn it
+	std::bitset<ROWS*COLUMNS> mask1(0);
+	for (int i = 0; i < length; i++) { mask1[i] = 1; }
+	std::bitset<ROWS*COLUMNS> mask(mask1 << (row*COLUMNS+col));
+	mask &= screen_invalid;
+	if(mask.any()) {
+#if DEBUG_TRANZPORT > 5	
+		printf("row: %d,col: %d is damaged, should redraw it\n", row,col);
+#endif
+		return true;
+	}
+	return false; 
+}
+
+// lcd_clear would be a separate function for a smart display
+// here it does nothing, but for the sake of completeness it should
+// probably write the lcd, and while I'm on the topic it should probably
+// take a row, col, length argument....
+
+void
+TranzportControlProtocol::lcd_clear ()
+{
+
+}
+
+// These lcd commands are not universally used yet and may drop out of the api
+
+int
+TranzportControlProtocol::lcd_flush ()
+{
+	return 0; 
+}
+
+int 
+TranzportControlProtocol::lcd_write(uint8_t* cmd, uint32_t timeout_override)
+{
+	int result;
+#if (DEBUG_TRANZPORT_SCREEN > 0)
+	printf("VALID  : %s\n", (screen_invalid.to_string()).c_str()); 
+#endif
+	if ((result = write(cmd,timeout_override))) {
+#if DEBUG_TRANZPORT > 4
+		printf("usb screen update failed for some reason... why? \nresult, cmd and data were %d %02x %02x %02x %02x %02x %02x %02x %02x\n", 
+		       result, cmd[0],cmd[1],cmd[2], cmd[3], cmd[4], cmd[5],cmd[6],cmd[7]); 
+#endif
+	}
+	return result;
+}
+
+void 
+TranzportControlProtocol::lcd_fill (uint8_t fill_char) 
+{
+}
+
+void 
+TranzportControlProtocol::lcd_print (int row, int col, const char* text) 
+{
+	print(row,col,text);
+}
+
+void TranzportControlProtocol::lcd_print_noretry (int row, int col, const char* text)
+{
+	print(row,col,text);
+}