Diff: RA8875/TextDisplay.cpp

Revision:

0:a115ff47d1c1

diff -r 000000000000 -r a115ff47d1c1 RA8875/TextDisplay.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/RA8875/TextDisplay.cpp	Mon Nov 30 11:13:18 2015 +0000
@@ -0,0 +1,108 @@
+/* mbed TextDisplay Display Library Base Class
+ * Copyright (c) 2007-2009 sford
+ * Released under the MIT License: http://mbed.org/license/mit
+ */
+
+#include "TextDisplay.h"
+
+//#define DEBUG "Text"
+// ...
+// INFO("Stuff to show %d", var); // new-line is automatically appended
+//
+#if (defined(DEBUG) && !defined(TARGET_LPC11U24))
+#define INFO(x, ...) std::printf("[INF %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
+#define WARN(x, ...) std::printf("[WRN %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
+#define ERR(x, ...)  std::printf("[ERR %s %3d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
+#else
+#define INFO(x, ...)
+#define WARN(x, ...)
+#define ERR(x, ...)
+#endif
+
+TextDisplay::TextDisplay(const char *name) : Stream(name)
+{
+    _row = 0;
+    _column = 0;
+    if (name == NULL) {
+        _path = NULL;
+    } else {
+        _path = new char[strlen(name) + 2];
+        sprintf(_path, "/%s", name);
+    }
+}
+
+int TextDisplay::_putc(int value)
+{
+    INFO("_putc(%d)", value);
+    if(value == '\n') {
+        _column = 0;
+        _row++;
+        if(_row >= rows()) {
+            _row = 0;
+        }
+    } else {
+        character(_column, _row, value);
+        _column++;
+        if(_column >= columns()) {
+            _column = 0;
+            _row++;
+            if(_row >= rows()) {
+                _row = 0;
+            }
+        }
+    }
+    return value;
+}
+
+// crude cls implementation, should generally be overwritten in derived class
+RetCode_t TextDisplay::cls(uint16_t layers)
+{
+    INFO("cls()");
+    locate(0, 0);
+    for(int i=0; i<columns()*rows(); i++) {
+        putc(' ');
+    }
+    return noerror;
+}
+
+RetCode_t TextDisplay::locate(textloc_t column, textloc_t row)
+{
+    INFO("locate(%d,%d)", column, row);
+    _column = column;
+    _row = row;
+    return noerror;
+}
+
+int TextDisplay::_getc()
+{
+    return -1;
+}
+
+RetCode_t TextDisplay::foreground(uint16_t color)
+{
+    //INFO("foreground(%4X)", color);
+    _foreground = color;
+    return noerror;
+}
+
+RetCode_t TextDisplay::background(uint16_t color)
+{
+    //INFO("background(%4X)", color);
+    _background = color;
+    return noerror;
+}
+
+bool TextDisplay::claim(FILE *stream)
+{
+    if ( _path == NULL) {
+        fprintf(stderr, "claim requires a name to be given in the instantiator of the TextDisplay instance!\r\n");
+        return false;
+    }
+    if (freopen(_path, "w", stream) == NULL) {
+        return false;       // Failed, should not happen
+    }
+    // make sure we use line buffering
+    setvbuf(stdout, NULL, _IOLBF, columns());
+    return true;
+}
+