added bitmap fonts and put string for vesa modes

1 files changed, 56 insertions, 0 deletions

diff --git a/kernel/vesa.c b/kernel/vesa.c
index 93a42f3..b1a298f 100644
--- a/kernel/vesa.c
+++ b/kernel/vesa.c
@@ -38,6 +38,14 @@ typedef struct ModeInfoBlock {
 
 static vbemodeinfo *VbeModeInfoBlock;
 
+
+typedef struct foolfont_struct
+{
+    uint8_t line[10]; //every single fool font consists of 10 lines a 8 bit
+
+}foolfont;
+
+
 void vesa_init(vbeinfo *info,vbemodeinfo *mode)
 {
     int i=0;
@@ -109,3 +117,51 @@ void PutPixel(int x,int y, int color){
     cTemp[x+y+2] = (uint8_t)((color>>16) & 0xff);
  }
 
+void PutFont(foolfont *font , char c, int x,int y, int color)
+{
+    int fnt=0;
+
+
+    if(c>='A'&&c<='Z')fnt=c-'A'+1;
+    else if(c>='a'&&c<='z')fnt=c-'a'+1;
+    else if(c>='0'&&c<='9')fnt=c-'0'+28;
+    else if(c=' ')fnt=27;
+
+
+    int posx, posy, sizex=8, sizey=10;
+
+    for(posx=x;posx<x+sizex;posx++)
+	for(posy=y;posy<y+sizey;posy++)
+	{
+	    if(font[fnt].line[posy-y]&1<<(7-(posx-x)))
+	    {
+		PutPixel(posx,posy,color);
+	    }
+	    else
+	    {
+		PutPixel(posx,posy,0);
+	    }
+
+	}
+    
+
+
+}
+
+void PutString(foolfont *font , char *str, int x,int y, int color)
+{
+
+    int i=x;
+    while((*str)!=0)
+    {
+	PutFont(font ,*str, i,y, color);
+	i+=9; // spacing 
+	str++;
+    }
+
+
+    
+    
+
+
+}