More Windows Table separation.

1 files changed, 166 insertions, 0 deletions

diff --git a/wintable/draw.h b/wintable/draw.h
new file mode 100644
index 0000000..adc1e68
--- /dev/null
+++ b/wintable/draw.h
@@ -0,0 +1,166 @@
+// 30 november 2014
+
+static void resize(struct table *t)
+{
+	RECT r;
+	SCROLLINFO si;
+
+	// do this first so our scrollbar calculations can be correct
+	repositionHeader(t);
+
+	// now adjust the scrollbars
+	r = realClientRect(t);
+	t->pagesize = (r.bottom - r.top) / rowHeight(t);
+	ZeroMemory(&si, sizeof (SCROLLINFO));
+	si.cbSize = sizeof (SCROLLINFO);
+	si.fMask = SIF_RANGE | SIF_PAGE;
+	si.nMin = 0;
+	si.nMax = t->count - 1;
+	si.nPage = t->pagesize;
+	SetScrollInfo(t->hwnd, SB_VERT, &si, TRUE);
+
+	recomputeHScroll(t);
+}
+
+// TODO alter this so that only the visible columns are redrawn
+// TODO this means rename controlSize to clientRect
+static void drawItem(struct table *t, HDC dc, intptr_t i, LONG y, LONG height, RECT controlSize)
+{
+	RECT rsel;
+	HBRUSH background;
+	int textColor;
+	WCHAR msg[100];
+	RECT headeritem;
+	intptr_t j;
+	LRESULT xoff;
+	IMAGELISTDRAWPARAMS ip;
+	POINT pt;
+
+	// TODO verify these two
+	background = (HBRUSH) (COLOR_WINDOW + 1);
+	textColor = COLOR_WINDOWTEXT;
+	if (t->selected == i) {
+		// these are the colors wine uses (http://source.winehq.org/source/dlls/comctl32/listview.c)
+		// the two for unfocused are also suggested by http://stackoverflow.com/questions/10428710/windows-forms-inactive-highlight-color
+		background = (HBRUSH) (COLOR_HIGHLIGHT + 1);
+		textColor = COLOR_HIGHLIGHTTEXT;
+		if (GetFocus() != t->hwnd) {
+			background = (HBRUSH) (COLOR_BTNFACE + 1);
+			textColor = COLOR_BTNTEXT;
+		}
+	}
+
+	// first fill the selection rect
+	// note that this already only draws the visible area
+	rsel.left = controlSize.left;
+	rsel.top = y;
+	rsel.right = controlSize.right - controlSize.left;
+	rsel.bottom = y + height;
+	if (FillRect(dc, &rsel, background) == 0)
+		abort();
+
+	// TODO double-check to see if this takes any parameters
+	xoff = SendMessageW(t->header, HDM_GETBITMAPMARGIN, 0, 0);
+	// now adjust for horizontal scrolling
+	xoff -= t->hpos;
+
+	// now draw the cells
+	if (SetTextColor(dc, GetSysColor(textColor)) == CLR_INVALID)
+		abort();
+	if (SetBkMode(dc, TRANSPARENT) == 0)
+		abort();
+	for (j = 0; j < t->nColumns; j++) {
+		if (SendMessageW(t->header, HDM_GETITEMRECT, (WPARAM) j, (LPARAM) (&headeritem)) == 0)
+			abort();
+		switch (t->columnTypes[j]) {
+		case tableColumnText:
+			rsel.left = headeritem.left + xoff;
+			rsel.top = y;
+			rsel.right = headeritem.right;
+			rsel.bottom = y + height;
+			// TODO vertical center in case the height is less than the icon height?
+			if (DrawTextExW(dc, msg, wsprintf(msg, L"Item %d", i), &rsel, DT_END_ELLIPSIS | DT_LEFT | DT_NOPREFIX | DT_SINGLELINE, NULL) == 0)
+				abort();
+			break;
+		case tableColumnImage:
+			// TODO vertically center if image is smaller than text height
+			// TODO same for checkboxes
+			ZeroMemory(&ip, sizeof (IMAGELISTDRAWPARAMS));
+			ip.cbSize = sizeof (IMAGELISTDRAWPARAMS);
+			ip.himl = t->checkboxes;//t->imagelist;
+			ip.i = (i%8);//0;
+			ip.hdcDst = dc;
+			ip.x = headeritem.left + xoff;
+			ip.y = y;
+			ip.cx = 0;		// draw whole image
+			ip.cy = 0;
+			ip.xBitmap = 0;
+			ip.yBitmap = 0;
+			ip.rgbBk = CLR_NONE;
+			ip.fStyle = ILD_NORMAL | ILD_SCALE;		// TODO alpha-blend; ILD_DPISCALE?
+			// TODO ILS_ALPHA?
+			if (ImageList_DrawIndirect(&ip) == 0)
+				abort();
+			break;
+		case tableColumnCheckbox:
+			// TODO
+			break;
+		}
+		if (t->selected == i && t->focusedColumn == j) {
+			rsel.left = headeritem.left;
+			rsel.top = y;
+			rsel.right = headeritem.right;
+			rsel.bottom = y + height;
+			if (DrawFocusRect(dc, &rsel) == 0)
+				abort();
+		}
+	}
+}
+
+static void drawItems(struct table *t, HDC dc, RECT cliprect)
+{
+	HFONT thisfont, prevfont;
+	LONG height;
+	LONG y;
+	intptr_t i;
+	RECT controlSize;		// for filling the entire selected row
+	intptr_t first, last;
+
+	if (GetClientRect(t->hwnd, &controlSize) == 0)
+		abort();
+
+	height = rowHeight(t);
+
+	thisfont = t->font;		// in case WM_SETFONT happens before we return
+	prevfont = (HFONT) SelectObject(dc, thisfont);
+	if (prevfont == NULL)
+		abort();
+
+	// ignore anything beneath the header
+	if (cliprect.top < t->headerHeight)
+		cliprect.top = t->headerHeight;
+	// now let's pretend the header isn't there
+	// we only need it in (or rather, before) the drawItem() calls below
+	cliprect.top -= t->headerHeight;
+	cliprect.bottom -= t->headerHeight;
+
+	// see http://blogs.msdn.com/b/oldnewthing/archive/2003/07/29/54591.aspx and http://blogs.msdn.com/b/oldnewthing/archive/2003/07/30/54600.aspx
+	// we need to add t->firstVisible here because cliprect is relative to the visible area
+	first = (cliprect.top / height) + t->firstVisible;
+	if (first < 0)
+		first = 0;
+	last = lastVisible(t, cliprect, height);
+
+	// now for the first y, discount firstVisible
+	y = (first - t->firstVisible) * height;
+	// and offset by the header height
+	y += t->headerHeight;
+	for (i = first; i < last; i++) {
+		drawItem(t, dc, i, y, height, controlSize);
+		y += height;
+	}
+
+	// reset everything
+	if (SelectObject(dc, prevfont) != (HGDIOBJ) (thisfont))
+		abort();
+}