diff options
Diffstat (limited to 'kernel.soso/screen.c')
-rw-r--r-- | kernel.soso/screen.c | 39 |
1 files changed, 13 insertions, 26 deletions
diff --git a/kernel.soso/screen.c b/kernel.soso/screen.c index 9613c304..b54bba83 100644 --- a/kernel.soso/screen.c +++ b/kernel.soso/screen.c @@ -11,51 +11,43 @@ static uint16 gCurrentLine = 0; static uint16 gCurrentColumn = 0; static uint8 gColor = 0x0A; -void Screen_FlushFromTty(Tty* tty) -{ +void Screen_FlushFromTty(Tty* tty) { memcpy(videoStart, tty->buffer, SCREEN_LINE_COUNT * SCREEN_COLUMN_COUNT * 2); Screen_MoveCursor(tty->currentLine, tty->currentColumn); } -void Screen_Print(int row, int column, const char* text) -{ +void Screen_Print(int row, int column, const char* text) { unsigned char * video = videoStart; video += (row * SCREEN_COLUMN_COUNT + column) * 2; - while(*text != 0) - { + while(*text != 0) { *video++ = *text++; *video++ = gColor; } } -void Screen_SetActiveColor(uint8 color) -{ +void Screen_SetActiveColor(uint8 color) { gColor = color; } -void Screen_ApplyColor(uint8 color) -{ +void Screen_ApplyColor(uint8 color) { gColor = color; unsigned char * video = videoStart; int i = 0; - for (i = 0; i < SCREEN_LINE_COUNT * SCREEN_COLUMN_COUNT; ++i) - { + for (i = 0; i < SCREEN_LINE_COUNT * SCREEN_COLUMN_COUNT; ++i) { video++; *video++ = gColor; } } -void Screen_Clear() -{ +void Screen_Clear() { unsigned char * video = videoStart; int i = 0; - for (i = 0; i < SCREEN_LINE_COUNT * SCREEN_COLUMN_COUNT; ++i) - { + for (i = 0; i < SCREEN_LINE_COUNT * SCREEN_COLUMN_COUNT; ++i) { *video++ = 0; *video++ = gColor; } @@ -64,8 +56,7 @@ void Screen_Clear() gCurrentColumn = 0; } -void Screen_MoveCursor(uint16 line, uint16 column) -{ +void Screen_MoveCursor(uint16 line, uint16 column) { // The screen is 80 characters wide... uint16 cursorLocation = line * SCREEN_COLUMN_COUNT + column; outb(0x3D4, 14); // Tell the VGA board we are setting the high cursor byte. @@ -77,23 +68,19 @@ void Screen_MoveCursor(uint16 line, uint16 column) gCurrentLine = line; } -void Screen_SetCursorVisible(BOOL visible) -{ +void Screen_SetCursorVisible(BOOL visible) { uint8 cursor = inb(0x3d5); - if (visible) - { + if (visible) { cursor &= ~0x20;//5th bit cleared when cursor visible } - else - { + else { cursor |= 0x20;//5th bit set when cursor invisible } outb(0x3D5, cursor); } -void Screen_GetCursor(uint16* line, uint16* column) -{ +void Screen_GetCursor(uint16* line, uint16* column) { *line = gCurrentLine; *column = gCurrentColumn; } |