start implementing textwindow

arch/textwindow.cc

@@ -1,27 +1,37 @@
 #include "textwindow.h"
+#include "cga.h"
 
 TextWindow::TextWindow(unsigned from_col, unsigned to_col, unsigned from_row,
                        unsigned to_row, bool use_cursor) {
-  (void)from_col;
-  (void)to_col;
-  (void)from_row;
-  (void)to_row;
-  (void)use_cursor;
+  this->from_col = from_col;
+  this->to_col = to_col;
+  this->from_row = from_row;
+  this->to_row = to_row;
+  this->use_cursor = use_cursor;
 }
 
 void TextWindow::setPos(unsigned rel_x, unsigned rel_y) {
-  (void)rel_x;
-  (void)rel_y;
+    if(use_cursor){
+        CGA::setCursor(from_col + rel_x, from_row + rel_y);
+    }else{
+        pos_x = from_col + rel_x;
+        pos_y = from_row + rel_y;
+    }
 }
 
 void TextWindow::getPos(unsigned& rel_x, unsigned& rel_y) const {
-  (void)rel_x;
-  (void)rel_y;
+        CGA::getCursor(rel_x, rel_y);
+        rel_x -= from_col;
+        rel_y -= from_row;
 }
 
 void TextWindow::setPos(int rel_x, int rel_y) {
-  (void)rel_x;
-  (void)rel_y;
+    if(rel_x < 0)
+        rel_x = to_col - from_col + rel_x;
+    if(rel_y < 0)
+        rel_y = to_row - from_row + rel_y;
+
+    setPos((unsigned) rel_x, (unsigned) rel_y);
 }
 
 void TextWindow::getPos(int& rel_x, int& rel_y) const {
@@ -30,9 +40,24 @@ void TextWindow::getPos(int& rel_x, int& rel_y) const {
 }
 
 void TextWindow::print(const char* str, size_t length, CGA::Attribute attrib) {
-  (void)str;
-  (void)length;
-  (void)attrib;
+    for(unsigned i=0; i<length; i++){
+        unsigned x_now, y_now;
+        getPos(x_now, y_now);
+        CGA::show(x_now, y_now, str[i], attrib);
+        if(from_col+x_now >= to_col){
+            x_now = 0;
+            if(from_row + y_now >= to_row){
+                //scrollUp()
+            }
+            else{
+                y_now++;
+            }
+        }
+        else {
+            x_now++;
+        }
+        setPos(x_now, y_now);
+    }
 }
 
 void TextWindow::reset(char character, CGA::Attribute attrib) {

arch/textwindow.h

@@ -20,6 +20,15 @@ class TextWindow {
   TextWindow(const TextWindow&) = delete;
   TextWindow& operator=(const TextWindow&) = delete;
 
+  unsigned from_col;
+  unsigned to_col;
+  unsigned from_row;
+  unsigned to_row;
+  bool use_cursor;
+
+  unsigned 	pos_x;
+  unsigned 	pos_y;
+
  public:
   /*! \brief Constructor of a text window
    *

main.cc

@@ -3,6 +3,7 @@
 #include "debug/output.h"
 
 #include "arch/cga.h"
+#include "arch/textwindow.h"
 
 // Main function
 // (the bootstrap processor starts here)}
@@ -10,14 +11,18 @@ extern "C" int main() {
   unsigned int numCPUs = Core::count();
   DBG_VERBOSE << "Number of CPUs: " << numCPUs << endl;
 
-  //test cga implemantation
-  CGA::setCursor(1, 2);
-  unsigned x,y;
-  CGA::getCursor(x, y);
-  CGA::setCursor(x+1, y+1);
-
-  for(uint8_t i = 0; i < 10; i++)
-    CGA::show(i, i, i+0x30, CGA::Attribute());
+  ////test cga implemantation
+  //CGA::setCursor(1, 2);
+  //unsigned x,y;
+  //CGA::getCursor(x, y);
+  //CGA::setCursor(x+1, y+1);
+  //for(uint8_t i = 0; i < 10; i++)
+  //  CGA::show(i, i, i+0x30, CGA::Attribute());
+
+  //test textwindow implemantation
+  TextWindow tw = TextWindow(0, 10, 0, 10, true);
+  tw.setPos(0,0);
+  tw.print("test123", 7);
 
   /* Start application processors
    * To avoid unexpected behaviour, make sure that interrupts are not