Go back to C and adapt codeHEADmasterdevelop

1 files changed, 111 insertions, 0 deletions

diff --git a/kernel/Helpers/memprint.c b/kernel/Helpers/memprint.c
new file mode 100644
index 0000000..83eb8de
--- /dev/null
+++ b/kernel/Helpers/memprint.c
@@ -0,0 +1,111 @@
+#include "./memprint.h"
+
+//Define global vars
+u8 MEMPRINT_CURSORX=0;
+u8 MEMPRINT_CURSORY=0;
+u8 MEMPRINT_COLORS=0x0F;
+
+
+
+//Move cursor
+void memprint_updateCursor(){
+
+
+    //Update X axis
+    MEMPRINT_CURSORX++;
+
+    //Check X value
+    if(MEMPRINT_CURSORX >= MAXCURSORX){
+
+        //If X is out of the screen
+        MEMPRINT_CURSORX=0;
+
+        //Update Y
+        MEMPRINT_CURSORY++;
+
+        //Check Y value
+        if(MEMPRINT_CURSORY > MAXCURSORY){
+
+            //If Y is out of the screen
+            memprint_scrollUp(1);
+
+            //Decrease Y value
+            MEMPRINT_CURSORY--;
+        }
+
+
+    }
+
+
+}
+
+//Change character background color
+void memprint_setBackground(colorBios color){
+    u8 newColor= (color << 4);
+    MEMPRINT_COLORS= newColor | ((MEMPRINT_COLORS << 4) >> 4);
+}
+
+//Change character color
+void memprint_setForeground(colorBios color){
+    u8 newColor= color;
+    MEMPRINT_COLORS= newColor | ((MEMPRINT_COLORS >> 4) << 4);
+}
+
+//Print a char
+void memprint_putChar(u8 character){
+
+    //Get the adresse with the cursor position
+    char *adress= ((char *) MEMPRINTSTARTADR) + (MEMPRINT_CURSORX * 2) + (MEMPRINT_CURSORY * MAXCURSORX * 2);
+
+    //Copy the character
+    *adress=character;
+
+    //Copy his attribute
+    adress++;
+    *adress=MEMPRINT_COLORS;
+
+    //Update cursor position
+    memprint_updateCursor();
+
+}
+
+
+//Print a char*
+void memprint_print(char *str){
+    while(*str!=0x0){
+        memprint_putChar(*str);
+        str++;
+    }
+}
+
+//Clear the screen
+void memprint_clear(){
+    memprint_scrollUp(MAXCURSORY);
+}
+
+//Scroll up "number" times
+void memprint_scrollUp(u8 number){
+
+    //Get number of adress (char & his attribute) to scroll
+    int nbAdrToScroll=number*MAXCURSORX*2;
+
+    int i=0;
+    //Scroll all of the characters and attributes
+    for(i;i!=MAXCURSORX*2*MAXCURSORY;i++){
+
+        //Get source character or attribute
+        char* source=(((char *)MEMPRINTSTARTADR) + i);
+
+        //Get destination character or attribute
+        char* dest=source-nbAdrToScroll;
+
+        //Check if destination is out of the screen
+        if(dest >= (char *)MEMPRINTSTARTADR)
+            *dest=*source;
+
+        //Remove data from source
+        *source=0x0;
+
+    }
+
+}