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Started handling colors in the Windows table code.

This commit is contained in:
Pietro Gagliardi 2018-06-09 10:40:42 -04:00
parent 06a8044c2c
commit c6c4dbd580
1 changed files with 71 additions and 2 deletions
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73
windows/table.cpp
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@ -34,6 +34,7 @@ struct uiTable {
// MSDN says we have to keep LVN_GETDISPINFO strings we allocate around at least until "two additional LVN_GETDISPINFO messages have been sent".
// we'll use this queue to do so; the "two additional" part is encoded in the initial state of the queue
std::queue<WCHAR *> *dispinfoStrings;
int backgroundColumn;
};
uiTableModel *uiNewTableModel(uiTableModelHandler *mh)
@ -109,7 +110,7 @@ void uiTableModelRowDeleted(uiTableModel *m, int oldIndex)
static LRESULT onLVN_GETDISPINFO(uiTable *t, NMLVDISPINFOW *nm)
{
struct columnParams *p;
static struct columnParams *p;
uiTableData *data;
WCHAR *wstr;
bool queueUpdated = false;
@ -137,6 +138,67 @@ static LRESULT onLVN_GETDISPINFO(uiTable *t, NMLVDISPINFOW *nm)
return 0;
}
static COLORREF blend(COLORREF base, double r, double g, double b, double a)
{
double br, bg, bb;
// TODO find a better fix than this; is listview already alphablending?
if (base != 0xFF000000) {
br = ((double) GetRValue(base)) / 255.0;
bg = ((double) GetGValue(base)) / 255.0;
bb = ((double) GetBValue(base)) / 255.0;
} else {
// TODO find the right color here
br = 1.0;
bg = 1.0;
bb = 1.0;
}
br = (r * a) + (br * (1.0 - a));
bg = (g * a) + (bg * (1.0 - a));
bb = (b * a) + (bb * (1.0 - a));
return RGB((BYTE) (br * 255),
(BYTE) (bg * 255),
(BYTE) (bb * 255));
}
static LRESULT onNM_CUSTOMDRAW(uiTable *t, NMLVCUSTOMDRAW *nm)
{
struct columnParams *p;
uiTableData *data;
double r, g, b, a;
LRESULT ret;
switch (nm->nmcd.dwDrawStage) {
case CDDS_PREPAINT:
return CDRF_NOTIFYITEMDRAW;
case CDDS_ITEMPREPAINT:
if (t->backgroundColumn != -1) {
data = (*(t->model->mh->CellValue))(t->model->mh, t->model, nm->nmcd.dwItemSpec, t->backgroundColumn);
if (data != NULL) {
uiTableDataColor(data, &r, &g, &b, &a);
uiFreeTableData(data);
nm->clrTextBk = blend(nm->clrTextBk, r, g, b, a);
}
}
return CDRF_NEWFONT | CDRF_NOTIFYSUBITEMDRAW;
case CDDS_SUBITEM | CDDS_ITEMPREPAINT:
p = (*(t->columns))[nm->iSubItem];
if (p->textParams.ColorModelColumn != -1) {
data = (*(t->model->mh->CellValue))(t->model->mh, t->model, nm->nmcd.dwItemSpec, p->textParams.ColorModelColumn);
if (data != NULL) {
uiTableDataColor(data, &r, &g, &b, &a);
uiFreeTableData(data);
// TODO the fallback here isn't correct
nm->clrText = blend(nm->clrText, r, g, b, a);
}
}
// TODO this keeps the color for the rest of the row
return CDRF_NEWFONT;
}
return CDRF_DODEFAULT;
}
static BOOL onWM_NOTIFY(uiControl *c, HWND hwnd, NMHDR *nmhdr, LRESULT *lResult)
{
uiTable *t = uiTable(c);
@ -145,6 +207,9 @@ static BOOL onWM_NOTIFY(uiControl *c, HWND hwnd, NMHDR *nmhdr, LRESULT *lResult)
case LVN_GETDISPINFO:
*lResult = onLVN_GETDISPINFO(t, (NMLVDISPINFOW *) nmhdr);
return TRUE;
case NM_CUSTOMDRAW:
*lResult = onNM_CUSTOMDRAW(t, (NMLVCUSTOMDRAW *) nmhdr);
return TRUE;
}
return FALSE;
}
@ -295,7 +360,9 @@ void uiTableAppendButtonColumn(uiTable *t, const char *name, int buttonTextModel
void uiTableSetRowBackgroundColorModelColumn(uiTable *t, int modelColumn)
{
// not implemented
// TODO make the names consistent
t->backgroundColumn = modelColumn;
// TODO redraw?
}
uiTable *uiNewTable(uiTableModel *model)
@ -329,5 +396,7 @@ uiTable *uiNewTable(uiTableModel *model)
t->dispinfoStrings->push(NULL);
t->dispinfoStrings->push(NULL);
t->backgroundColumn = -1;
return t;
}