void
BChannelSlider::GetPreferredSize(float* width, float* height)
{
_UpdateFontDimens();
if (fIsVertical) {
*width = 11.0 * CountChannels();
*width = max_c(*width, ceilf(StringWidth(Label())));
*width = max_c(*width, ceilf(StringWidth(MinLimitLabel())));
*width = max_c(*width, ceilf(StringWidth(MaxLimitLabel())));
*width += kPadding * 2.0;
*height = (fLineFeed * 3.0) + (kPadding * 2.0) + 147.0;
} else {
*width = max_c(64.0, ceilf(StringWidth(Label())));
*width = max_c(*width, ceilf(StringWidth(MinLimitLabel()))
+ ceilf(StringWidth(MaxLimitLabel())) + 10.0);
*width += kPadding * 2.0;
*height = 11.0 * CountChannels() + (fLineFeed * 2.0)
+ (kPadding * 2.0);
}
}
void
BChannelSlider::Draw(BRect updateRect)
{
_UpdateFontDimens();
_DrawThumbs();
BRect bounds(Bounds());
if (Label()) {
float labelWidth = StringWidth(Label());
DrawString(Label(), BPoint((bounds.Width() - labelWidth) / 2.0,
fBaseLine));
}
if (MinLimitLabel()) {
if (fIsVertical) {
if (MinLimitLabel()) {
float x = (bounds.Width() - StringWidth(MinLimitLabel()))
/ 2.0;
DrawString(MinLimitLabel(), BPoint(x, bounds.bottom
- kPadding));
}
} else {
if (MinLimitLabel()) {
DrawString(MinLimitLabel(), BPoint(kPadding, bounds.bottom
- kPadding));
}
}
}
if (MaxLimitLabel()) {
if (fIsVertical) {
if (MaxLimitLabel()) {
float x = (bounds.Width() - StringWidth(MaxLimitLabel()))
/ 2.0;
DrawString(MaxLimitLabel(), BPoint(x, 2 * fLineFeed));
}
} else {
if (MaxLimitLabel()) {
DrawString(MaxLimitLabel(), BPoint(bounds.right - kPadding
- StringWidth(MaxLimitLabel()), bounds.bottom - kPadding));
}
}
}
}
BSize
BSlider::_ValidateMinSize()
{
if (fMinSize.width >= 0) {
// the preferred size is up to date
return fMinSize;
}
font_height fontHeight;
GetFontHeight(&fontHeight);
float width = 0.0;
float height = 0.0;
if (fMaxUpdateTextWidth < 0.0)
fMaxUpdateTextWidth = MaxUpdateTextWidth();
if (Orientation() == B_HORIZONTAL) {
height = 12.0 + fBarThickness;
int32 rows = 0;
float labelWidth = 0;
int32 labelRows = 0;
float labelSpacing = StringWidth("M") * 2;
if (Label()) {
labelWidth = StringWidth(Label());
labelRows = 1;
}
if (fMaxUpdateTextWidth > 0.0) {
if (labelWidth > 0)
labelWidth += labelSpacing;
labelWidth += fMaxUpdateTextWidth;
labelRows = 1;
}
rows += labelRows;
if (MinLimitLabel())
width = StringWidth(MinLimitLabel());
if (MaxLimitLabel()) {
// some space between the labels
if (MinLimitLabel())
width += labelSpacing;
width += StringWidth(MaxLimitLabel());
}
if (labelWidth > width)
width = labelWidth;
if (width < 32.0)
width = 32.0;
if (MinLimitLabel() || MaxLimitLabel())
rows++;
height += rows * (ceilf(fontHeight.ascent)
+ ceilf(fontHeight.descent) + 4.0);
} else {
// B_VERTICAL
width = 12.0 + fBarThickness;
height = 32.0;
float lineHeightNoLeading = ceilf(fontHeight.ascent)
+ ceilf(fontHeight.descent);
float lineHeight = lineHeightNoLeading + ceilf(fontHeight.leading);
// find largest label
float labelWidth = 0;
if (Label()) {
labelWidth = StringWidth(Label());
height += lineHeightNoLeading;
}
if (MaxLimitLabel()) {
labelWidth = max_c(labelWidth, StringWidth(MaxLimitLabel()));
height += Label() ? lineHeight : lineHeightNoLeading;
}
if (MinLimitLabel()) {
labelWidth = max_c(labelWidth, StringWidth(MinLimitLabel()));
height += lineHeightNoLeading;
}
if (fMaxUpdateTextWidth > 0.0) {
labelWidth = max_c(labelWidth, fMaxUpdateTextWidth);
height += MinLimitLabel() ? lineHeight : lineHeightNoLeading;
}
width = max_c(labelWidth, width);
}
fMinSize.width = width;
fMinSize.height = height;
ResetLayoutInvalidation();
return fMinSize;
}
