BSize
BButton::_ValidatePreferredSize()
{
if (fPreferredSize.width < 0) {
// width
float width = 20.0f + (float)ceil(StringWidth(Label()));
if (width < 75.0f)
width = 75.0f;
if (fDrawAsDefault)
width += 6.0f;
fPreferredSize.width = width;
// height
font_height fontHeight;
GetFontHeight(&fontHeight);
fPreferredSize.height
= ceilf((fontHeight.ascent + fontHeight.descent) * 1.8)
+ (fDrawAsDefault ? 6.0f : 0);
ResetLayoutInvalidation();
}
return fPreferredSize;
}
BSize
BButton::_ValidatePreferredSize()
{
if (fPreferredSize.width < 0) {
BControlLook::background_type backgroundType
= fBehavior == B_POP_UP_BEHAVIOR
? BControlLook::B_BUTTON_WITH_POP_UP_BACKGROUND
: BControlLook::B_BUTTON_BACKGROUND;
float left, top, right, bottom;
be_control_look->GetInsets(BControlLook::B_BUTTON_FRAME, backgroundType,
IsDefault() ? BControlLook::B_DEFAULT_BUTTON : 0,
left, top, right, bottom);
// width
float width = left + right + 2 * kLabelMargin - 1;
const char* label = Label();
if (label != NULL) {
width = std::max(width, 20.0f);
width += (float)ceil(StringWidth(label));
}
const BBitmap* icon = IconBitmap(B_INACTIVE_ICON_BITMAP);
if (icon != NULL)
width += icon->Bounds().Width() + 1;
if (label != NULL && icon != NULL)
width += be_control_look->DefaultLabelSpacing();
// height
float minHorizontalMargins = top + bottom + 2 * kLabelMargin;
float height = -1;
if (label != NULL) {
font_height fontHeight;
GetFontHeight(&fontHeight);
float textHeight = fontHeight.ascent + fontHeight.descent;
height = ceilf(textHeight * 1.8);
float margins = height - ceilf(textHeight);
if (margins < minHorizontalMargins)
height += minHorizontalMargins - margins;
}
if (icon != NULL) {
height = std::max(height,
icon->Bounds().Height() + minHorizontalMargins);
}
// force some minimum width/height values
width = std::max(width, label != NULL ? 75.0f : 5.0f);
height = std::max(height, 5.0f);
fPreferredSize.Set(width, height);
ResetLayoutInvalidation();
}
return fPreferredSize;
}
void
BMenuField::_ValidateLayoutData()
{
CALLED();
if (fLayoutData->valid)
return;
// cache font height
font_height& fh = fLayoutData->font_info;
GetFontHeight(&fh);
if (Label() != NULL) {
fLayoutData->label_width = ceilf(StringWidth(Label()));
fLayoutData->label_height = ceilf(fh.ascent) + ceilf(fh.descent);
} else {
fLayoutData->label_width = 0;
fLayoutData->label_height = 0;
}
// compute the minimal divider
float divider = 0;
if (fLayoutData->label_width > 0)
divider = fLayoutData->label_width + 5;
// If we shan't do real layout, we let the current divider take influence.
if (!(Flags() & B_SUPPORTS_LAYOUT))
divider = max_c(divider, fDivider);
// get the minimal (== preferred) menu bar size
// TODO: BMenu::MinSize() is using the ResizeMode() to decide the
// minimum width. If the mode is B_FOLLOW_LEFT_RIGHT, it will use the
// parent's frame width or window's frame width. So at least the returned
// size is wrong, but apparantly it doesn't have much bad effect.
fLayoutData->menu_bar_min = fMenuBar->MinSize();
TRACE("menu bar min width: %.2f\n", fLayoutData->menu_bar_min.width);
// compute our minimal (== preferred) size
BSize min(fLayoutData->menu_bar_min);
min.width += 2 * kVMargin;
min.height += 2 * kVMargin;
if (divider > 0)
min.width += divider;
if (fLayoutData->label_height > min.height)
min.height = fLayoutData->label_height;
fLayoutData->min = min;
fLayoutData->valid = true;
ResetLayoutInvalidation();
TRACE("width: %.2f, height: %.2f\n", min.width, min.height);
}
void
BTextControl::_ValidateLayoutData()
{
CALLED();
if (fLayoutData->valid)
return;
// cache font height
font_height& fh = fLayoutData->font_info;
GetFontHeight(&fh);
if (Label() != NULL) {
fLayoutData->label_width = ceilf(StringWidth(Label()));
fLayoutData->label_height = ceilf(fh.ascent) + ceilf(fh.descent);
} else {
fLayoutData->label_width = 0;
fLayoutData->label_height = 0;
}
// compute the minimal divider
float divider = 0;
if (fLayoutData->label_width > 0) {
divider = fLayoutData->label_width
+ be_control_look->DefaultLabelSpacing();
}
// If we shan't do real layout, we let the current divider take influence.
if (!(Flags() & B_SUPPORTS_LAYOUT))
divider = max_c(divider, fDivider);
// get the minimal (== preferred) text view size
fLayoutData->text_view_min = fText->MinSize();
TRACE("text view min width: %.2f\n", fLayoutData->text_view_min.width);
// compute our minimal (== preferred) size
BSize min(fLayoutData->text_view_min);
min.width += 2 * kFrameMargin;
min.height += 2 * kFrameMargin;
if (divider > 0)
min.width += divider;
if (fLayoutData->label_height > min.height)
min.height = fLayoutData->label_height;
fLayoutData->min = min;
fLayoutData->valid = true;
ResetLayoutInvalidation();
TRACE("width: %.2f, height: %.2f\n", min.width, min.height);
}
BSize
BStringView::_ValidatePreferredSize()
{
if (fPreferredSize.height < 0) {
// height
font_height fontHeight;
GetFontHeight(&fontHeight);
fPreferredSize.height = ceilf(fontHeight.ascent + fontHeight.descent
+ fontHeight.leading);
ResetLayoutInvalidation();
}
return fPreferredSize;
}
void
BAbstractSpinner::_ValidateLayoutData()
{
if (fLayoutData->valid)
return;
font_height fontHeight = fLayoutData->font_info;
GetFontHeight(&fontHeight);
if (Label() != NULL) {
fLayoutData->label_width = StringWidth(Label());
fLayoutData->label_height = ceilf(fontHeight.ascent
+ fontHeight.descent + fontHeight.leading);
} else {
fLayoutData->label_width = 0;
fLayoutData->label_height = 0;
}
float divider = 0;
if (fLayoutData->label_width > 0) {
divider = ceilf(fLayoutData->label_width
+ be_control_look->DefaultLabelSpacing());
}
if ((Flags() & B_SUPPORTS_LAYOUT) == 0)
divider = std::max(divider, fDivider);
float minTextWidth = fTextView->StringWidth("99999");
float textViewHeight = fTextView->LineHeight(0) + kFrameMargin * 2;
float textViewWidth = minTextWidth + textViewHeight * 2;
fLayoutData->text_view_width = textViewWidth;
fLayoutData->text_view_height = textViewHeight;
BSize min(textViewWidth, textViewHeight);
if (divider > 0.0f)
min.width += divider;
if (fLayoutData->label_height > min.height)
min.height = fLayoutData->label_height;
fLayoutData->min = min;
fLayoutData->valid = true;
ResetLayoutInvalidation();
}
void
BBox::_ValidateLayoutData()
{
if (fLayoutData->valid)
return;
// compute the label box, width and height
bool label = true;
float labelHeight = 0; // height of the label (pixel count)
if (fLabel) {
// leave 6 pixels of the frame, and have a gap of 4 pixels between
// the frame and the text on either side
font_height fontHeight;
GetFontHeight(&fontHeight);
fLayoutData->label_box.Set(6.0f, 0, 14.0f + StringWidth(fLabel),
ceilf(fontHeight.ascent));
labelHeight = ceilf(fontHeight.ascent + fontHeight.descent) + 1;
} else if (fLabelView) {
// the label view is placed at (0, 10) at its preferred size
BSize size = fLabelView->PreferredSize();
fLayoutData->label_box.Set(10, 0, 10 + size.width, size.height);
labelHeight = size.height + 1;
} else {
label = false;
}
// border
switch (fStyle) {
case B_PLAIN_BORDER:
fLayoutData->insets.Set(1, 1, 1, 1);
break;
case B_FANCY_BORDER:
fLayoutData->insets.Set(3, 3, 3, 3);
break;
case B_NO_BORDER:
default:
fLayoutData->insets.Set(0, 0, 0, 0);
break;
}
// if there's a label, the top inset will be dictated by the label
if (label && labelHeight > fLayoutData->insets.top)
fLayoutData->insets.top = labelHeight;
// total number of pixel the border adds
float addWidth = fLayoutData->insets.left + fLayoutData->insets.right;
float addHeight = fLayoutData->insets.top + fLayoutData->insets.bottom;
// compute the minimal width induced by the label
float minWidth;
if (label)
minWidth = fLayoutData->label_box.right + fLayoutData->insets.right;
else
minWidth = addWidth - 1;
// finally consider the child constraints, if we shall support layout
BView* child = _Child();
if (child && (Flags() & B_SUPPORTS_LAYOUT)) {
BSize min = child->MinSize();
BSize max = child->MaxSize();
BSize preferred = child->PreferredSize();
min.width += addWidth;
min.height += addHeight;
preferred.width += addWidth;
preferred.height += addHeight;
max.width = BLayoutUtils::AddDistances(max.width, addWidth - 1);
max.height = BLayoutUtils::AddDistances(max.height, addHeight - 1);
if (min.width < minWidth)
min.width = minWidth;
BLayoutUtils::FixSizeConstraints(min, max, preferred);
fLayoutData->min = min;
fLayoutData->max = max;
fLayoutData->preferred = preferred;
} else {
fLayoutData->min.Set(minWidth, addHeight - 1);
fLayoutData->max.Set(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED);
fLayoutData->preferred = fLayoutData->min;
}
fLayoutData->valid = true;
ResetLayoutInvalidation();
}
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;
}