Some work on the libgui

1 files changed, 33 insertions, 0 deletions

diff --git a/src/userspace/libgui/util.c b/src/userspace/libgui/util.c
new file mode 100644
index 0000000..5019175
--- /dev/null
+++ b/src/userspace/libgui/util.c
@@ -0,0 +1,33 @@
+#include <stdint.h>
+#include <gui.h>
+
+void gui_convert_color(u32 *color_array, u32 color)
+{
+	u8 red = (u8)((color >> 16) & 255);
+	u8 green = (u8)((color >> 8) & 255);
+	u8 blue = (u8)(color & 255);
+
+	if ((vbe_bpl << 3) == 8) {
+		u32 new_color =
+			((red * 7 / 255) << 5) + ((green * 7 / 255) << 2) + (blue * 3 / 255);
+		color_array[0] = (new_color >> 16) & 255;
+		color_array[1] = (new_color >> 8) & 255;
+		color_array[2] = new_color & 255;
+	} else if ((vbe_bpl << 3) == 16) {
+		u32 new_color =
+			(((red & 0b11111000) << 8) + ((green & 0b11111100) << 3) + (blue >> 3));
+		color_array[0] = (new_color >> 16) & 255;
+		color_array[1] = (new_color >> 8) & 255;
+		color_array[2] = new_color & 255;
+	} else if ((vbe_bpl << 3) == 24 || (vbe_bpl << 3) == 32) {
+		color_array[0] = red;
+		color_array[1] = green;
+		color_array[2] = blue;
+	}
+}
+
+void gui_set_color(u32 color)
+{
+	gui_convert_color(terminal_color, color);
+	gui_convert_color(terminal_background, gui_black);
+}
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