// FrameResized
void
ColorField::FrameResized(float width, float height)
{
BRect r = _BitmapRect();
_AllocBitmap(r.IntegerWidth() + 1, r.IntegerHeight() + 1);
Invalidate();
}
// FrameResized
void
AlphaSlider::FrameResized(float width, float height)
{
BRect r = _BitmapRect();
_AllocBitmap(r.IntegerWidth() + 1, r.IntegerHeight() + 1);
_UpdateColors();
Invalidate();
}
// PositionMarkerAt
void
ColorField::PositionMarkerAt(BPoint where)
{
BRect rect = _BitmapRect();
where.ConstrainTo(rect);
where -= rect.LeftTop();
fLastMarkerPosition = fMarkerPosition;
fMarkerPosition = where;
Invalidate();
}
// _ValueFor
int32
AlphaSlider::_ValueFor(BPoint where) const
{
BRect r = _BitmapRect();
int32 value;
if (fOrientation == B_HORIZONTAL)
value = (int32)(255 * (where.x - r.left) / r.Width() + 0.5);
else
value = (int32)(255 * (where.y - r.top) / r.Height() + 0.5);
value = max_c(0, value);
value = min_c(255, value);
return value;
}
// Draw
void
AlphaSlider::Draw(BRect updateRect)
{
BRect b = _BitmapRect();
b.InsetBy(-2.0, -2.0);
bool isFocus = IsFocus() && Window()->IsActive();
rgb_color bg = LowColor();
rgb_color shadow;
rgb_color darkShadow;
rgb_color light;
rgb_color black;
if (IsEnabled()) {
shadow = tint_color(bg, B_DARKEN_1_TINT);
darkShadow = tint_color(bg, B_DARKEN_3_TINT);
light = tint_color(bg, B_LIGHTEN_MAX_TINT);
black = tint_color(bg, B_DARKEN_MAX_TINT);
} else {
shadow = bg;
darkShadow = tint_color(bg, B_DARKEN_1_TINT);
light = tint_color(bg, B_LIGHTEN_2_TINT);
black = tint_color(bg, B_DARKEN_2_TINT);
}
rgb_color focus = isFocus ? ui_color(B_KEYBOARD_NAVIGATION_COLOR)
: black;
stroke_frame(this, b, shadow, shadow, light, light);
b.InsetBy(1.0, 1.0);
if (isFocus)
stroke_frame(this, b, focus, focus, focus, focus);
else
stroke_frame(this, b, darkShadow, darkShadow, bg, bg);
b.InsetBy(1.0, 1.0);
DrawBitmap(fBitmap, b.LeftTop());
// value marker
if (fOrientation == B_HORIZONTAL) {
float pos = floorf(b.left + Value() * b.Width() / 255.0 + 0.5);
if (pos - 2 >= b.left) {
SetHighColor(kWhite);
StrokeLine(BPoint(pos - 2, b.top), BPoint(pos - 2, b.bottom));
}
if (pos - 1 >= b.left) {
SetHighColor(kBlack);
StrokeLine(BPoint(pos - 1, b.top), BPoint(pos - 1, b.bottom));
}
if (pos + 1 <= b.right) {
SetHighColor(kBlack);
StrokeLine(BPoint(pos + 1, b.top), BPoint(pos + 1, b.bottom));
}
if (pos + 2 <= b.right) {
SetHighColor(kWhite);
StrokeLine(BPoint(pos + 2, b.top), BPoint(pos + 2, b.bottom));
}
} else {
float pos = floorf(b.top + Value() * b.Height() / 255.0 + 0.5);
if (pos - 2 >= b.top) {
SetHighColor(kWhite);
StrokeLine(BPoint(b.left, pos - 2), BPoint(b.right, pos - 2));
}
if (pos - 1 >= b.top) {
SetHighColor(kBlack);
StrokeLine(BPoint(b.left, pos - 1), BPoint(b.right, pos - 1));
}
if (pos + 1 <= b.bottom) {
SetHighColor(kBlack);
StrokeLine(BPoint(b.left, pos + 1), BPoint(b.right, pos + 1));
}
if (pos + 2 <= b.bottom) {
SetHighColor(kWhite);
StrokeLine(BPoint(b.left, pos + 2), BPoint(b.right, pos + 2));
}
}
}
// Height
float
ColorField::Height() const
{
return _BitmapRect().IntegerHeight() + 1;
}
// Width
float
ColorField::Width() const
{
return _BitmapRect().IntegerWidth() + 1;
}