Added a helper function for colour inversion

enkiv2 · Jul 14, 2011 · 2d8e856 · 2d8e856
1 parent 6a37499
commit 2d8e856
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Showing 4 changed files with 6 additions and 1 deletion.
diff --git a/include/vga.h b/include/vga.h
@@ -30,6 +30,7 @@ void write(char c);
 void putch(char c);
 void puts(char* c);
 void scroll(int numlines);
+void invertattr();
 void setattr(char attr);
 void cls();
 #endif

diff --git a/src/fd.img b/src/fd.img
diff --git a/src/ix_main.c b/src/ix_main.c
@@ -83,7 +83,7 @@ void kmain(unsigned long magic, unsigned long addr) {
 	locate(5, 9);
 	puts("PRESS ANY KEY TO CONTINUE");
 	while(kb_buf=='\0') { 
-		setattr(color<<4 | color>>4);
+		invertattr();
 		locate(5, 9);
 		puts("PRESS ANY KEY TO CONTINUE");
 		timer_wait(9);

diff --git a/src/vga.c b/src/vga.c
@@ -92,6 +92,10 @@ void scroll(int numlines) { //@
 	}
 }
 
+void invertattr() { //@ inverts the current colour scheme
+	setattr(color<<4|color>>4);
+}
+
 void setattr(char attr) { //@ attr is in vga color mode format
 	color = attr;
 }