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Rewrote item layouting - new code fixes bitmap/image position for 

non-left-aligned text, prevents jumping when resizing non-left-aligned
text, implements clipping for images and correctly aligns bitmaps when
an image is already there.
This commit is contained in:
Felix Nawothnig 2005-05-14 11:03:17 +00:00 committed by Alexandre Julliard
parent d0b6308642
commit e9e6f13996
1 changed files with 103 additions and 132 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

205
dlls/comctl32/header.c
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@ -163,7 +163,7 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
HEADER_ITEM *phdi = &infoPtr->items[iItem];
RECT r;
INT oldBkMode;
INT oldBkMode, cxEdge = GetSystemMetrics(SM_CXEDGE);
TRACE("DrawItem(iItem %d bHotTrack %d unicode flag %d)\n", iItem, bHotTrack, infoPtr->bUnicode);
@ -188,6 +188,9 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
else
DrawEdge (hdc, &r, EDGE_ETCHED, BF_BOTTOM | BF_RIGHT | BF_ADJUST);
r.left -= cxEdge;
r.right += cxEdge;
if (phdi->fmt & HDF_OWNERDRAW) {
DRAWITEMSTRUCT dis;
dis.CtlType = ODT_HEADER;
@ -206,137 +209,105 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
SetBkMode(hdc, oldBkMode);
}
else {
UINT uTextJustify = DT_LEFT;
if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_CENTER)
uTextJustify = DT_CENTER;
else if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_RIGHT)
uTextJustify = DT_RIGHT;
if ((phdi->fmt & HDF_BITMAP) && !(phdi->fmt & HDF_BITMAP_ON_RIGHT) && (phdi->hbm)) {
UINT rw, rh, /* width and height of r */
*x = NULL, *w = NULL; /* x and width of the pic (bmp or img) which is part of cnt */
/* cnt,txt,img,bmp */
UINT cx, tx, ix, bx,
cw, tw, iw, bw;
BITMAP bmp;
HDC hdcBitmap;
INT yD, yS, cx, cy, rx, ry;
GetObjectW (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
cw = tw = iw = bw = 0;
rw = r.right - r.left;
rh = r.bottom - r.top;
ry = r.bottom - r.top;
rx = r.right - r.left;
if (ry >= bmp.bmHeight) {
cy = bmp.bmHeight;
yD = r.top + (ry - bmp.bmHeight) / 2;
yS = 0;
}
else {
cy = ry;
yD = r.top;
yS = (bmp.bmHeight - ry) / 2;
}
if (rx >= bmp.bmWidth + infoPtr->iMargin) {
cx = bmp.bmWidth;
}
else {
cx = rx - infoPtr->iMargin;
}
hdcBitmap = CreateCompatibleDC (hdc);
SelectObject (hdcBitmap, phdi->hbm);
BitBlt (hdc, r.left + infoPtr->iMargin, yD, cx, cy, hdcBitmap, 0, yS, SRCCOPY);
DeleteDC (hdcBitmap);
r.left += (bmp.bmWidth + infoPtr->iMargin);
}
if ((phdi->fmt & HDF_BITMAP) && (phdi->fmt & HDF_BITMAP_ON_RIGHT) && (phdi->hbm)) {
BITMAP bmp;
HDC hdcBitmap;
INT xD, yD, yS, cx, cy, rx, ry, tx;
if (phdi->fmt & HDF_STRING) {
RECT textRect;
GetObjectW (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
textRect = r;
if (phdi->fmt & HDF_STRING) {
DrawTextW (hdc, phdi->pszText, -1,
&textRect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_CALCRECT);
tx = textRect.right - textRect.left;
cw = textRect.right - textRect.left + 2 * infoPtr->iMargin;
}
if ((phdi->fmt & HDF_IMAGE) && (infoPtr->himl)) {
iw = infoPtr->himl->cx + 2 * infoPtr->iMargin;
x = &ix;
w = &iw;
}
if ((phdi->fmt & HDF_BITMAP) && (phdi->hbm)) {
GetObjectW (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
bw = bmp.bmWidth + 2 * infoPtr->iMargin;
if (!iw) {
x = &bx;
w = &bw;
}
}
if (bw || iw)
cw += *w;
/* align cx using the unclipped cw */
if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_LEFT)
cx = r.left;
else if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_CENTER)
cx = r.left + rw / 2 - cw / 2;
else /* HDF_RIGHT */
cx = r.right - cw;
/* clip cx & cw */
if (cx < r.left)
cx = r.left;
if (cx + cw > r.right)
cw = r.right - cx;
tx = cx + infoPtr->iMargin;
/* since cw might have changed we have to recalculate tw */
tw = cw - infoPtr->iMargin * 2;
if (iw || bw) {
tw -= *w;
if (phdi->fmt & HDF_BITMAP_ON_RIGHT) {
/* put pic behind text */
*x = cx + tw + infoPtr->iMargin * 3;
} else {
*x = cx + infoPtr->iMargin;
/* move text behind pic */
tx += *w;
}
}
if (iw && bw) {
/* since we're done with the layout we can
now calculate the position of bmp which
has no influence on alignment and layout
because of img */
if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_RIGHT)
bx = cx - bw + infoPtr->iMargin;
else
tx = 0;
ry = r.bottom - r.top;
rx = r.right - r.left;
if (ry >= bmp.bmHeight) {
cy = bmp.bmHeight;
yD = r.top + (ry - bmp.bmHeight) / 2;
yS = 0;
}
else {
cy = ry;
yD = r.top;
yS = (bmp.bmHeight - ry) / 2;
bx = cx + cw + infoPtr->iMargin;
}
if (r.left + tx + bmp.bmWidth + 2*infoPtr->iMargin <= r.right) {
cx = bmp.bmWidth;
xD = r.left + tx + infoPtr->iMargin;
}
else {
if (rx >= bmp.bmWidth + infoPtr->iMargin ) {
cx = bmp.bmWidth;
xD = r.right - bmp.bmWidth - infoPtr->iMargin;
r.right = xD - infoPtr->iMargin;
}
else {
cx = rx - infoPtr->iMargin;
xD = r.left;
r.right = r.left;
}
}
if (iw || bw) {
HDC hClipDC = GetDC(hwnd);
HRGN hClipRgn = CreateRectRgn(r.left, r.top, r.right, r.bottom);
SelectClipRgn(hClipDC, hClipRgn);
hdcBitmap = CreateCompatibleDC (hdc);
if (bw) {
HDC hdcBitmap = CreateCompatibleDC (hClipDC);
SelectObject (hdcBitmap, phdi->hbm);
BitBlt (hdc, xD, yD, cx, cy, hdcBitmap, 0, yS, SRCCOPY);
BitBlt (hClipDC, bx, r.top + ((INT)rh - bmp.bmHeight) / 2,
bmp.bmWidth, bmp.bmHeight, hdcBitmap, 0, 0, SRCCOPY);
DeleteDC (hdcBitmap);
}
if ((phdi->fmt & HDF_IMAGE) && !(phdi->fmt & HDF_BITMAP_ON_RIGHT) && (infoPtr->himl)) {
r.left += infoPtr->iMargin;
ImageList_DrawEx(infoPtr->himl, phdi->iImage, hdc, r.left, r.top + (r.bottom-r.top- infoPtr->himl->cy)/2,
infoPtr->himl->cx, r.bottom-r.top, CLR_DEFAULT, CLR_DEFAULT, 0);
r.left += infoPtr->himl->cx;
if (iw) {
ImageList_DrawEx (infoPtr->himl, phdi->iImage, hClipDC,
ix, r.top + ((INT)rh - infoPtr->himl->cy) / 2,
infoPtr->himl->cx, infoPtr->himl->cy, CLR_DEFAULT, CLR_DEFAULT, 0);
}
if ((phdi->fmt & HDF_IMAGE) && (phdi->fmt & HDF_BITMAP_ON_RIGHT) && (infoPtr->himl)) {
RECT textRect;
INT tx;
textRect = r;
if (phdi->fmt & HDF_STRING) {
DrawTextW (hdc, phdi->pszText, -1,
&textRect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_CALCRECT);
tx = textRect.right - textRect.left;
}
else
tx = 0;
if (tx < (r.right-r.left - infoPtr->himl->cx - GetSystemMetrics(SM_CXEDGE)))
ImageList_DrawEx(infoPtr->himl, phdi->iImage, hdc, r.left + tx + 2*infoPtr->iMargin,
r.top + (r.bottom-r.top-infoPtr->himl->cy)/2, infoPtr->himl->cx, r.bottom-r.top,
CLR_DEFAULT, CLR_DEFAULT, 0);
else {
INT x = max(r.right - infoPtr->iMargin - infoPtr->himl->cx, r.left);
INT cx = min(infoPtr->himl->cx, r.right-r.left - GetSystemMetrics(SM_CXEDGE));
ImageList_DrawEx(infoPtr->himl, phdi->iImage, hdc, x ,
r.top + (r.bottom-r.top-infoPtr->himl->cy)/2, cx, r.bottom-r.top,
CLR_DEFAULT, CLR_DEFAULT, 0);
r.right -= infoPtr->himl->cx - infoPtr->iMargin;
}
DeleteObject(hClipRgn);
DeleteDC(hClipDC);
}
if (((phdi->fmt & HDF_STRING)
@ -344,11 +315,11 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
HDF_BITMAP_ON_RIGHT|HDF_IMAGE)))) /* no explicit format specified? */
&& (phdi->pszText)) {
oldBkMode = SetBkMode(hdc, TRANSPARENT);
r.left += infoPtr->iMargin;
r.right -= infoPtr->iMargin;
SetTextColor (hdc, (bHotTrack) ? COLOR_HIGHLIGHT : COLOR_BTNTEXT);
r.left = tx;
r.right = tx + tw;
DrawTextW (hdc, phdi->pszText, -1,
&r, uTextJustify|DT_END_ELLIPSIS|DT_VCENTER|DT_SINGLELINE);
&r, DT_LEFT|DT_END_ELLIPSIS|DT_VCENTER|DT_SINGLELINE);
if (oldBkMode != TRANSPARENT)
SetBkMode(hdc, oldBkMode);
}