384 lines
10 KiB
C
384 lines
10 KiB
C
// list view (small icons, multiple columns)
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#include "ctlspriv.h"
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#include "listview.h"
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#define COLUMN_VIEW
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void NEAR PASCAL ListView_LDrawItem(LV* plv, int i, LISTITEM FAR* pitem, HDC hdc, LPPOINT lpptOrg, RECT FAR* prcClip, UINT fDraw)
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{
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RECT rcIcon;
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RECT rcLabel;
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RECT rcBounds;
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RECT rcT;
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ListView_GetRects(plv, i, &rcIcon, &rcLabel, &rcBounds, NULL);
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if (!prcClip || IntersectRect(&rcT, &rcBounds, prcClip))
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{
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LV_ITEM item;
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char ach[CCHLABELMAX];
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UINT fText;
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if (lpptOrg)
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{
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OffsetRect(&rcIcon, lpptOrg->x - rcBounds.left,
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lpptOrg->y - rcBounds.top);
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OffsetRect(&rcLabel, lpptOrg->x - rcBounds.left,
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lpptOrg->y - rcBounds.top);
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}
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item.mask = LVIF_TEXT | LVIF_IMAGE | LVIF_STATE;
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item.iItem = i;
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item.iSubItem = 0;
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item.pszText = ach;
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item.cchTextMax = sizeof(ach);
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item.stateMask = LVIS_ALL;
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ListView_OnGetItem(plv, &item);
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fText = ListView_DrawImage(plv, &item, hdc,
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rcIcon.left, rcIcon.top, fDraw) | SHDT_ELLIPSES;
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// Don't draw the label if it is being edited.
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if (plv->iEdit != i)
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{
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if (fDraw & LVDI_TRANSTEXT)
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fText |= SHDT_TRANSPARENT;
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if (pitem->cxSingleLabel == SRECOMPUTE)
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ListView_RecomputeLabelSize(plv, pitem, i, hdc);
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if (pitem->cxSingleLabel < rcLabel.right - rcLabel.left)
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rcLabel.right = rcLabel.left + pitem->cxSingleLabel;
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SHDrawText(hdc, item.pszText, &rcLabel, LVCFMT_LEFT, fText,
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plv->cyLabelChar, plv->cxEllipses, plv->clrText,
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(plv->style & WS_DISABLED ? plv->clrBk : plv->clrTextBk));
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if ((fDraw & LVDI_FOCUS) && (pitem->state & LVIS_FOCUSED))
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DrawFocusRect(hdc, &rcLabel);
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}
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}
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}
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int NEAR ListView_LItemHitTest(LV* plv, int x, int y, UINT FAR* pflags)
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{
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int iHit;
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int i;
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int iCol;
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int xItem; //where is the x in relation to the item
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UINT flags;
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LISTITEM FAR* pitem;
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HDC hdc;
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flags = LVHT_NOWHERE;
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iHit = -1;
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#ifdef COLUMN_VIEW
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i = y / plv->cyItem;
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if (i >= 0 && i < plv->cItemCol)
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{
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iCol = (x + plv->xOrigin) / plv->cxItem;
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i += iCol * plv->cItemCol;
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if (i >= 0 && i < ListView_Count(plv))
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{
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iHit = i;
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xItem = x + plv->xOrigin - iCol * plv->cxItem;
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if (xItem < plv->cxState) {
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flags = LVHT_ONITEMSTATEICON;
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} else if (xItem < (plv->cxState + plv->cxSmIcon)) {
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flags = LVHT_ONITEMICON;
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}
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else
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{
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pitem = ListView_FastGetItemPtr(plv, i);
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if (pitem->cxSingleLabel == SRECOMPUTE)
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{
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hdc = ListView_RecomputeLabelSize(plv, pitem, i, NULL);
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ReleaseDC(HWND_DESKTOP, hdc);
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}
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if (xItem < (plv->cxSmIcon + plv->cxState + pitem->cxSingleLabel))
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flags = LVHT_ONITEMLABEL;
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}
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}
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}
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#else
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i = x / plv->cxItem;
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if (i < plv->cItemCol)
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{
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i += ((y + plv->xOrigin) / plv->cyItem) * plv->cItemCol;
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if (i < ListView_Count(plv))
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{
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iHit = i;
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flags = LVHT_ONITEMICON;
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}
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}
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#endif
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*pflags = flags;
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return iHit;
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}
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void NEAR ListView_LGetRects(LV* plv, int i, RECT FAR* prcIcon,
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RECT FAR* prcLabel, RECT FAR *prcBounds, RECT FAR* prcSelectBounds)
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{
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RECT rcIcon;
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RECT rcLabel;
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int x, y;
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int cItemCol = plv->cItemCol;
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if (cItemCol == 0)
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{
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// Called before other data has been initialized so call
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// update scrollbars which should make sure that that
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// we have valid data...
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ListView_UpdateScrollBars(plv);
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// but it's possible that updatescrollbars did nothing because of
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// LVS_NOSCROLL or redraw
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if (plv->cItemCol == 0)
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cItemCol = 1;
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else
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cItemCol = plv->cItemCol;
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}
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#ifdef COLUMN_VIEW
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x = (i / cItemCol) * plv->cxItem;
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y = (i % cItemCol) * plv->cyItem;
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rcIcon.left = x - plv->xOrigin + plv->cxState;
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rcIcon.top = y;
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#else
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x = (i % cItemCol) * plv->cxItem;
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y = (i / cItemCol) * plv->cyItem;
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rcIcon.left = x;
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rcIcon.top = y - plv->xOrigin;
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#endif
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rcIcon.right = rcIcon.left + plv->cxSmIcon;
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rcIcon.bottom = rcIcon.top + plv->cyItem;
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if (prcIcon)
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*prcIcon = rcIcon;
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rcLabel.left = rcIcon.right;
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rcLabel.right = rcIcon.left + plv->cxItem - plv->cxState;
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rcLabel.top = rcIcon.top;
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rcLabel.bottom = rcIcon.bottom;
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if (prcLabel)
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*prcLabel = rcLabel;
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if (prcBounds)
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{
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*prcBounds = rcLabel;
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prcBounds->left = rcIcon.left - plv->cxState;
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}
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if (prcSelectBounds)
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{
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*prcSelectBounds = rcLabel;
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prcSelectBounds->left = rcIcon.left;
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}
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}
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void NEAR ListView_LUpdateScrollBars(LV* plv)
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{
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RECT rcClient;
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int cItemCol;
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int cCol;
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int cColVis;
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SCROLLINFO si;
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Assert(plv);
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ListView_GetClientRect(plv, &rcClient, FALSE, NULL);
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#ifdef COLUMN_VIEW
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cColVis = (rcClient.right - rcClient.left) / plv->cxItem;
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cItemCol = max(1, (rcClient.bottom - rcClient.top) / plv->cyItem);
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#else
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cColVis = (rcClient.bottom - rcClient.top) / plv->cyItem;
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cItemCol = max(1, (rcClient.right - rcClient.left) / plv->cxItem);
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#endif
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cCol = (ListView_Count(plv) + cItemCol - 1) / cItemCol;
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// Make the client area smaller as appropriate, and
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// recompute cCol to reflect scroll bar.
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si.cbSize = sizeof(SCROLLINFO);
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si.fMask = SIF_PAGE | SIF_RANGE | SIF_POS;
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si.nPage = cColVis;
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si.nMin = 0;
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#ifdef COLUMN_VIEW
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rcClient.bottom -= g_cyScrollbar;
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cItemCol = max(1, (rcClient.bottom - rcClient.top) / plv->cyItem);
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cCol = (ListView_Count(plv) + cItemCol - 1) / cItemCol;
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si.nPos = plv->xOrigin / plv->cxItem;
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si.nMax = cCol - 1;
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#ifdef IEWIN31_25
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plv->cxScrollPage = (int)si.nPage;
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SetScrollRange( plv->hwnd, SB_HORZ, (int) si.nMin,
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max( (int)(si.nMax-si.nPage+1), 0 ), FALSE );
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SetScrollPos( plv->hwnd, SB_HORZ, (int) si.nPos, TRUE );
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#else
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SetScrollInfo(plv->hwnd, SB_HORZ, &si, TRUE);
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#endif //IEWIN31_25
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#else
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rcClient.right -= cxScrollBar;
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cItemCol = max(1, (rcClient.right - rcClient.left) / plv->cxItem);
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cCol = (ListView_Count(plv) + cItemCol - 1) / cItemCol;
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si.nPos = plv->xOrigin / plv->cyItem;
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si.nMax = cCol - 1;
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#ifdef IEWIN31_25
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plv->cyScrollPage = si.nPage;
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SetScrollRange( plv->hwnd, SB_VERT, (int) si.nMin,
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max( (int) si.nMax-si.nPage+1, 0 ), FALSE );
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SetScrollPos( plv->hwnd, SB_VERT, (int) si.nPos, TRUE );
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#else
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SetScrollInfo(plv->hwnd, SB_VERT, &si, TRUE);
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#endif //IEWIN31_25
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#endif
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// Update number of visible lines...
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if (plv->cItemCol != cItemCol)
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{
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plv->cItemCol = cItemCol;
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InvalidateRect(plv->hwnd, NULL, TRUE);
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}
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// make sure our position and page doesn't hang over max
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if ((si.nPos + (LONG)si.nPage - 1 > si.nMax) && si.nPos > 0) {
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int iNewPos, iDelta;
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iNewPos = (int)si.nMax - (int)si.nPage + 1;
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if (iNewPos < 0) iNewPos = 0;
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if (iNewPos != si.nPos) {
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iDelta = iNewPos - (int)si.nPos;
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#ifdef COLUMN_VIEW
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ListView_LScroll2(plv, iDelta, 0);
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#else
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ListView_LScroll2(plv, 0, iDelta);
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#endif
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ListView_LUpdateScrollBars(plv);
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}
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}
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// never have the other scrollbar
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#ifdef COLUMN_VIEW
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SetScrollRange(plv->hwnd, SB_VERT, 0, 0, TRUE);
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#else
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SetScrollRange(plv->hwnd, SB_HORZ, 0, 0, TRUE);
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#endif
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}
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void FAR PASCAL ListView_LScroll2(LV* plv, int dx, int dy)
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{
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#ifdef COLUMN_VIEW
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if (dx)
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{
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dx *= plv->cxItem;
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plv->xOrigin += dx;
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ScrollWindowEx(plv->hwnd, -dx, 0, NULL, NULL, NULL, NULL,
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SW_INVALIDATE | SW_ERASE);
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UpdateWindow(plv->hwnd);
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}
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#else
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if (dy)
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{
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dy *= plv->cyItem;
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plv->xOrigin += dy;
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ScrollWindowEx(plv->hwnd, 0, -dy, NULL, NULL, NULL, NULL,
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SW_INVALIDATE | SW_ERASE);
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UpdateWindow(plv->hwnd);
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}
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#endif
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}
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void NEAR ListView_LOnScroll(LV* plv, UINT code, int posNew)
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{
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RECT rcClient;
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int cPage;
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if (plv->hwndEdit)
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ListView_DismissEdit(plv, FALSE);
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ListView_GetClientRect(plv, &rcClient, TRUE, NULL);
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#ifdef COLUMN_VIEW
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cPage = (rcClient.right - rcClient.left) / plv->cxItem;
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ListView_ComOnScroll(plv, code, posNew, SB_HORZ, 1,
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cPage ? cPage : 1, ListView_LScroll2);
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#else
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cPage = (rcClient.bottom - rcClient.top) / plv->cyItem;
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ListView_ComOnScroll(plv, code, posNew, SB_VERT, 1,
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cPage ? cPage : 1, ListView_LScroll2);
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#endif
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}
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// This function will see if the size of column should be changed for the listview
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// It will check to see if the items between first and last exceed the current width
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// and if so will see if the columns are currently big enough. This wont happen
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// if we are not currently in listview or if the caller has set an explicit size.
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BOOL FAR PASCAL ListView_MaybeResizeListColumns(LV* plv, int iFirst, int iLast)
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{
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HDC hdc = NULL;
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int cxMaxLabel = 0;
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if (!ListView_IsListView(plv) || (plv->flags & LVF_COLSIZESET))
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return(FALSE);
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while (iFirst <= iLast)
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{
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LISTITEM FAR* pitem = ListView_FastGetItemPtr(plv, iFirst);
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if (pitem->cxSingleLabel == SRECOMPUTE)
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{
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hdc = ListView_RecomputeLabelSize(plv, pitem, iFirst, hdc);
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}
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if (pitem->cxSingleLabel > cxMaxLabel)
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cxMaxLabel = pitem->cxSingleLabel;
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iFirst++;
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}
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if (hdc)
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ReleaseDC(HWND_DESKTOP, hdc);
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// We have the max label width, see if this plus the rest of the slop will
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// cause us to want to resize.
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cxMaxLabel += plv->cxSmIcon + g_cxIconMargin + plv->cxState;
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if (cxMaxLabel > g_cxScreen)
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cxMaxLabel = g_cxScreen;
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// Now see if we should resize the columns...
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if (cxMaxLabel > plv->cxItem)
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{
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int iScroll = plv->xOrigin / plv->cxItem;
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DebugMsg(DM_TRACE, "LV Resize Columns: %d", cxMaxLabel);
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ListView_ISetColumnWidth(plv, 0, cxMaxLabel, FALSE);
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plv->xOrigin = iScroll * plv->cxItem;
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return(TRUE);
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}
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return(FALSE);
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}
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