void CColumnTreeView::UpdateColumns()
{
m_cxTotal = 0;
HDITEM hditem;
hditem.mask = HDI_WIDTH;
int nCnt = m_Header.GetItemCount();
if (nCnt > 16)
nCnt = 16;
// get column widths from the header control
for (int i=0; i<nCnt; i++)
{
if (m_Header.GetItem(i, &hditem))
{
m_cxTotal += m_arrColWidths[i] = hditem.cxy;
if (i==0)
m_Tree.m_cxFirstCol = hditem.cxy;
}
}
m_Tree.m_cxTotal = m_cxTotal;
UpdateScroller();
RepositionControls();
}
void CColumnTreeView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
UpdateScroller();
RepositionControls();
}
void
DataView::FrameResized(float width, float height)
{
if (fFitFontSize) {
// adapt the font size to fit in the view's bounds
float oldSize = FontSize();
BFont font = be_fixed_font;
float steps = 0.5f;
float size;
for (size = 1.f; size < 100; size += steps) {
font.SetSize(size);
float charWidth = font.StringWidth("w");
if (charWidth * (kBlockSize * 4 + fPositionLength + 6) + 2 * kHorizontalSpace > width)
break;
if (size > 6)
steps = 1.0f;
}
size -= steps;
font.SetSize(size);
if (oldSize != size) {
SetFont(&font);
Invalidate();
}
}
UpdateScroller();
}
void
DataView::FrameResized(float width, float height)
{
if (fFitFontSize) {
// adapt the font size to fit in the view's bounds
float oldSize = FontSize();
float steps = 0.5f;
float size;
for (size = 1.f; size < 100; size += steps) {
int32 preferredWidth = WidthForFontSize(size);
if (preferredWidth > width)
break;
if (size > 6)
steps = 1.0f;
}
size -= steps;
if (oldSize != size) {
BFont font = be_fixed_font;
font.SetSize(size);
SetFont(&font);
Invalidate();
}
}
UpdateScroller();
}
void
DataView::SetFontSize(float point)
{
bool fit = (point == 0.0f);
if (fit) {
if (!fFitFontSize)
SendNotices(kDataViewPreferredSize);
fFitFontSize = fit;
FrameResized(Bounds().Width(), Bounds().Height());
return;
}
fFitFontSize = false;
BFont font = be_fixed_font;
font.SetSize(point);
SetFont(&font);
UpdateScroller();
Invalidate();
SendNotices(kDataViewPreferredSize);
}
void
DataView::MessageReceived(BMessage *message)
{
switch (message->what) {
case kMsgUpdateData:
case kMsgDataEditorUpdate:
UpdateFromEditor(message);
break;
case kMsgDataEditorParameterChange:
{
int32 viewSize;
off_t offset;
if (message->FindInt64("offset", &offset) == B_OK) {
fOffset = offset;
SetSelection(0, 0);
MakeVisible(0);
}
if (message->FindInt32("view_size", &viewSize) == B_OK) {
fDataSize = viewSize;
fData = (uint8 *)realloc(fData, fDataSize);
UpdateScroller();
SendNotices(kDataViewPreferredSize);
}
if (message->FindInt64("file_size", &offset) == B_OK)
UpdateFromEditor();
break;
}
case kMsgBaseType:
{
int32 type;
if (message->FindInt32("base", &type) != B_OK)
break;
SetBase((base_type)type);
break;
}
case kMsgSetSelection:
{
int64 start, end;
if (message->FindInt64("start", &start) != B_OK
|| message->FindInt64("end", &end) != B_OK)
break;
SetSelection(start, end);
break;
}
case B_SELECT_ALL:
SetSelection(0, fDataSize - 1);
break;
case B_COPY:
Copy();
break;
case B_PASTE:
Paste();
break;
case B_UNDO:
fEditor.Undo();
break;
case B_REDO:
fEditor.Redo();
break;
case B_MIME_DATA:
if (AcceptsDrop(message)) {
const void *data;
ssize_t size;
if (message->FindData("text/plain", B_MIME_TYPE, &data, &size) == B_OK
|| message->FindData(B_FILE_MIME_TYPE, B_MIME_TYPE, &data, &size) == B_OK) {
if (fEditor.Replace(fOffset + fStart, (const uint8 *)data, size) != B_OK)
SetSelection(fStoredStart, fStoredEnd);
fDragMessageSize = -1;
}
}
break;
default:
BView::MessageReceived(message);
}
}