libui/zOLD_windows/tabledispinfo.cpp

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// 13 june 2018
#include "uipriv_windows.hpp"
#include "table.hpp"
// further reading:
// - https://msdn.microsoft.com/en-us/library/ye4z8x58.aspx
static HRESULT handleLVIF_TEXT(uiTable *t, NMLVDISPINFOW *nm, uiprivTableColumnParams *p)
{
int strcol;
uiTableValue *value;
WCHAR *wstr;
int progress;
HRESULT hr;
if ((nm->item.mask & LVIF_TEXT) == 0)
return S_OK;
strcol = -1;
if (p->textModelColumn != -1)
strcol = p->textModelColumn;
else if (p->buttonModelColumn != -1)
strcol = p->buttonModelColumn;
if (strcol != -1) {
value = uiprivTableModelCellValue(t->model, nm->item.iItem, strcol);
wstr = toUTF16(uiTableValueString(value));
uiFreeTableValue(value);
// We *could* just make pszText into a freshly allocated
// conversion and avoid the limitation of cchTextMax.
// But then, we would have to keep things around for some
// amount of time (some pages on MSDN say 2 additional
// LVN_GETDISPINFO messages). And in practice, anything
// that results in extra LVN_GETDISPINFO messages (such
// as LVN_GETITEMRECT with LVIR_LABEL) will break this
// counting.
// TODO make it so we don't have to make a copy; instead we can convert directly into pszText (this will also avoid the risk of having a dangling surrogate pair at the end)
wcsncpy(nm->item.pszText, wstr, nm->item.cchTextMax);
nm->item.pszText[nm->item.cchTextMax - 1] = L'\0';
uiprivFree(wstr);
return S_OK;
}
if (p->progressBarModelColumn != -1) {
progress = uiprivTableProgress(t, nm->item.iItem, nm->item.iSubItem, p->progressBarModelColumn, NULL);
if (progress == -1) {
// TODO either localize this or replace it with something that's language-neutral
// TODO ensure null terminator
wcsncpy(nm->item.pszText, L"Indeterminate", nm->item.cchTextMax);
return S_OK;
}
// TODO ensure null terminator
_snwprintf(nm->item.pszText, nm->item.cchTextMax, L"%d%%", progress);
return S_OK;
}
return S_OK;
}
static HRESULT handleLVIF_IMAGE(uiTable *t, NMLVDISPINFOW *nm, uiprivTableColumnParams *p)
{
uiTableValue *value;
HRESULT hr;
if (nm->item.iSubItem == 0 && p->imageModelColumn == -1 && p->checkboxModelColumn == -1) {
// Having an image list always leaves space for an image
// on the main item :|
// Other places on the internet imply that you should be
// able to do this but that it shouldn't work, but it works
// perfectly (and pixel-perfectly too) for me, so...
nm->item.mask |= LVIF_INDENT;
nm->item.iIndent = -1;
}
if ((nm->item.mask & LVIF_IMAGE) == 0)
return S_OK; // nothing to do here
// TODO see if the -1 part is correct
// TODO see if we should use state instead of images for checkbox value
nm->item.iImage = -1;
if (p->imageModelColumn != -1 || p->checkboxModelColumn != -1)
nm->item.iImage = 0;
return S_OK;
}
HRESULT uiprivTableHandleLVN_GETDISPINFO(uiTable *t, NMLVDISPINFOW *nm, LRESULT *lResult)
{
uiprivTableColumnParams *p;
HRESULT hr;
p = (*(t->columns))[nm->item.iSubItem];
hr = handleLVIF_TEXT(t, nm, p);
if (hr != S_OK)
return hr;
hr = handleLVIF_IMAGE(t, nm, p);
if (hr != S_OK)
return hr;
*lResult = 0;
return S_OK;
}