diff options
Diffstat (limited to 'wintable/draw.h')
| -rw-r--r-- | wintable/draw.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/wintable/draw.h b/wintable/draw.h index 59a1ea1..a325d93 100644 --- a/wintable/draw.h +++ b/wintable/draw.h @@ -20,6 +20,9 @@ static void drawCell(struct table *t, HDC dc, struct drawCellParams *p) POINT pt; int cbState; RECT cellrect; + HDC idc; + HBITMAP previbitmap; + BLENDFUNCTION bf; // TODO verify these two background = (HBRUSH) (COLOR_WINDOW + 1); @@ -46,7 +49,6 @@ static void drawCell(struct table *t, HDC dc, struct drawCellParams *p) switch (t->columnTypes[p->column]) { case tableColumnText: - case tableColumnImage: // TODO toCellContentRect(t, &r, p->xoff, 0, 0); // TODO get the text height if (SetTextColor(dc, GetSysColor(textColor)) == CLR_INVALID) panic("error setting Table cell text color"); @@ -56,6 +58,28 @@ static void drawCell(struct table *t, HDC dc, struct drawCellParams *p) if (DrawTextExW(dc, msg, n, &r, DT_END_ELLIPSIS | DT_LEFT | DT_NOPREFIX | DT_SINGLELINE, NULL) == 0) panic("error drawing Table cell text"); break; + case tableColumnImage: + toCellContentRect(t, &r, p->xoff, tableImageWidth(), tableImageHeight()); + idc = CreateCompatibleDC(dc); + if (idc == NULL) + panic("error creating compatible DC for Table image cell drawing"); + previbitmap = SelectObject(idc, testbitmap); + if (previbitmap == NULL) + panic("error selecting Table cell image into compatible DC for image drawing"); + ZeroMemory(&bf, sizeof (BLENDFUNCTION)); + bf.BlendOp = AC_SRC_OVER; + bf.BlendFlags = 0; + bf.SourceConstantAlpha = 255; // per-pixel alpha values + bf.AlphaFormat = AC_SRC_ALPHA; + // TODO 16 and 16 are the width and height of the image; we would need to get that out somehow + if (AlphaBlend(dc, r.left, r.top, r.right - r.left, r.bottom - r.top, + idc, 0, 0, 16, 16, bf) == FALSE) + panic("error drawing image into Table cell"); + if (SelectObject(idc, previbitmap) != testbitmap) + panic("error deselecting Table cell image for drawing image"); + if (DeleteDC(idc) == 0) + panic("error deleting Table compatible DC for image cell drawing"); + break; case tableColumnCheckbox: toCheckboxRect(t, &r, p->xoff); cbState = 0; |