* Copyright 2005, Jérôme Duval. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Inspired by SoundCapture from Be newsletter (Media Kit Basics: Consumers
* and Producers)
*/
#include <Bitmap.h>
#include <Debug.h>
#include <Screen.h>
#include "DrawingTidbits.h"
rgb_color
ShiftColor(rgb_color color, float percent)
{
rgb_color result = {
ShiftComponent(color.red, percent),
ShiftComponent(color.green, percent),
ShiftComponent(color.blue, percent),
0
};
return result;
}
static bool
CompareColors(const rgb_color a, const rgb_color b)
{
return a.red == b.red
&& a.green == b.green
&& a.blue == b.blue
&& a.alpha == b.alpha;
}
bool
operator==(const rgb_color &a, const rgb_color &b)
{
return CompareColors(a, b);
}
bool
operator!=(const rgb_color &a, const rgb_color &b)
{
return !CompareColors(a, b);
}
void
ReplaceColor(BBitmap *bitmap, rgb_color from, rgb_color to)
{
ASSERT(bitmap->ColorSpace() == B_CMAP8);
BScreen screen(B_MAIN_SCREEN_ID);
uint32 fromIndex = screen.IndexForColor(from);
uint32 toIndex = screen.IndexForColor(to);
uchar *bits = (uchar *)bitmap->Bits();
int32 bitsLength = bitmap->BitsLength();
for (int32 index = 0; index < bitsLength; index++)
if (bits[index] == fromIndex)
bits[index] = toIndex;
}
void
ReplaceTransparentColor(BBitmap *bitmap, rgb_color with)
{
ASSERT(bitmap->ColorSpace() == B_CMAP8);
BScreen screen(B_MAIN_SCREEN_ID);
uint8 withIndex = screen.IndexForColor(with);
uchar *bits = (uchar *)bitmap->Bits();
int32 bitsLength = bitmap->BitsLength();
for (int32 index = 0; index < bitsLength; index++)
if (bits[index] == B_TRANSPARENT_8_BIT)
bits[index] = withIndex;
}
