Source code of Windows XP (NT5)
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#include <windows.h>
#include <windowsx.h>
#include <malloc.h>
#include <string.h>
#include "debug.h"
#include "HierFile.h"
VOID HierFile_DrawTerm(LPHEIRDRAWSTRUCT lpHierFileStruct) {
if (lpHierFileStruct->hbmIcons1) {
if (lpHierFileStruct->hbmMem1)
SelectObject(lpHierFileStruct->hdcMem1, lpHierFileStruct->hbmMem1);
lpHierFileStruct->hbmMem1 = NULL;
DeleteObject(lpHierFileStruct->hbmIcons1);
lpHierFileStruct->hbmIcons1 = NULL;
}
if ( lpHierFileStruct->hdcMem1 ) {
DeleteDC(lpHierFileStruct->hdcMem1);
lpHierFileStruct->hdcMem1 = NULL;
}
if (lpHierFileStruct->hbmIcons2) {
if (lpHierFileStruct->hbmMem2)
SelectObject(lpHierFileStruct->hdcMem2, lpHierFileStruct->hbmMem2);
lpHierFileStruct->hbmMem2 = NULL;
DeleteObject(lpHierFileStruct->hbmIcons2);
lpHierFileStruct->hbmIcons2 = NULL;
}
if ( lpHierFileStruct->hdcMem2 ) {
DeleteDC(lpHierFileStruct->hdcMem2);
lpHierFileStruct->hdcMem2 = NULL;
}
} // HierFile_DrawTerm
VOID HierFile_DrawCloseAll(LPHEIRDRAWSTRUCT lpHierFileStruct ) {
lpHierFileStruct->NumOpened= 0;
if ( lpHierFileStruct->Opened ) {
_ffree(lpHierFileStruct->Opened);
}
lpHierFileStruct->Opened = NULL;
} // HierFile_DrawCloseAll
VOID HierFile_OnMeasureItem(HWND hwnd, MEASUREITEMSTRUCT FAR* lpMeasureItem,
LPHEIRDRAWSTRUCT lpHierFileStruct) {
lpMeasureItem->itemHeight = max(lpHierFileStruct->nBitmapHeight1,
lpHierFileStruct->nTextHeight);
} // HierFile_OnMeasureItem
VOID HierFile_DrawSetTextHeight (HWND hwndList, HFONT hFont, LPHEIRDRAWSTRUCT lpHierFileStruct ) {
TEXTMETRIC TextMetrics;
HANDLE hOldFont=NULL;
HDC hdc;
//
// This sure looks like a lot of work to find the character height
//
hdc = GetDC(hwndList);
hOldFont = SelectObject(hdc, hFont);
GetTextMetrics(hdc, &TextMetrics);
SelectObject(hdc, hOldFont);
ReleaseDC(hwndList, hdc);
lpHierFileStruct->nTextHeight = TextMetrics.tmHeight;
lpHierFileStruct->nLineHeight =
max(lpHierFileStruct->nBitmapHeight1, lpHierFileStruct->nTextHeight);
if ( hwndList != NULL )
SendMessage(hwndList, LB_SETITEMHEIGHT, 0,
MAKELPARAM(lpHierFileStruct->nLineHeight, 0));
} // HierFile_DrawSetTextHeight
static DWORD near RGB2BGR(DWORD rgb) {
return RGB(GetBValue(rgb),GetGValue(rgb),GetRValue(rgb));
} // RGB2BGR
/*
* Creates the objects used while drawing the tree. This may be called
* repeatedly in the event of a WM_SYSCOLORCHANGED message.
*/
BOOL HierFile_DrawInit(HINSTANCE hInstance,
int nBitmap1,
int nBitmap2,
int nRows,
int nColumns,
BOOL bLines,
LPHEIRDRAWSTRUCT lpHierFileStruct,
BOOL bInit) {
HANDLE hRes;
HANDLE hResMem;
LPBITMAPINFOHEADER lpbiReadOnly;
LPBITMAPINFOHEADER lpbiReadWrite;
DWORD FAR * lpColorTable;
LPSTR lpBits;
int biSize;
int bc;
HDC hDC;
if ( bInit ) {
lpHierFileStruct->NumOpened = 0;
lpHierFileStruct->Opened = NULL;
lpHierFileStruct->bLines = bLines;
}
// If the Memory DC is not created yet do that first.
if (!lpHierFileStruct->hdcMem1) {
// get a screen DC
hDC = GetDC(NULL);
// Create a memory DC compatible with the screen
lpHierFileStruct->hdcMem1 = CreateCompatibleDC(hDC);
// Release the Screen DC
ReleaseDC(NULL, hDC);
if (!lpHierFileStruct->hdcMem1)
return FALSE;
lpHierFileStruct->hbmMem1 = NULL;
}
// If the Memory DC is not created yet do that first.
if (!lpHierFileStruct->hdcMem2) {
// get a screen DC
hDC = GetDC(NULL);
// Create a memory DC compatible with the screen
lpHierFileStruct->hdcMem2 = CreateCompatibleDC(hDC);
// Release the Screen DC
ReleaseDC(NULL, hDC);
if (!lpHierFileStruct->hdcMem2)
return FALSE;
lpHierFileStruct->hbmMem2 = NULL;
}
/*+----------------------------------------------------------------------------------+
| For First Bitmap |
+----------------------------------------------------------------------------------+*/
// (Re)Load the Bitmap ( original from disk )
// Use the FindResource,LoadResource,LockResource since it makes it easy to get the
// pointer to the BITMAPINFOHEADER we need.
hRes = FindResource(hInstance, MAKEINTRESOURCE(nBitmap1), RT_BITMAP);
if (!hRes)
return FALSE;
hResMem = LoadResource(hInstance, hRes);
if (!hResMem)
return FALSE;
// Now figure out the bitmaps background color.
// This code assumes the lower left corner is a
// bit in the background color.
lpbiReadOnly = (LPBITMAPINFOHEADER)LockResource(hResMem);
if (!lpbiReadOnly)
return FALSE;
// Determine size of bitmap information header plus color table entries
biSize = lpbiReadOnly->biSize + ((1 << (lpbiReadOnly->biBitCount)) * sizeof(RGBQUAD));
// Allocate copy of the bitmap information to munge on
lpbiReadWrite = (LPBITMAPINFOHEADER)GlobalAlloc(GPTR, biSize);
if (!lpbiReadWrite)
return FALSE;
memcpy(lpbiReadWrite, lpbiReadOnly, biSize);
// Color table immediately follows bitmap information header
lpColorTable = (DWORD FAR *)((LPBYTE)lpbiReadWrite + lpbiReadWrite->biSize);
// No need to munge bits so use original
lpBits = (LPBYTE)lpbiReadOnly + biSize;
bc = (lpBits[0] & 0xF0) >> 4; // ASSUMES LOWER LEFT CORNER IS BG!!
lpColorTable[bc] = RGB2BGR(GetSysColor(COLOR_WINDOW));
hDC = GetDC(NULL);
lpHierFileStruct->hbmIcons1 = CreateDIBitmap(
hDC,
lpbiReadWrite,
CBM_INIT,
lpBits,
(LPBITMAPINFO)lpbiReadWrite,
DIB_RGB_COLORS
);
ReleaseDC(NULL, hDC);
lpHierFileStruct->nBitmapHeight1 = (WORD)lpbiReadWrite->biHeight / nRows;
lpHierFileStruct->nBitmapWidth1 = (WORD)lpbiReadWrite->biWidth / nColumns;
lpHierFileStruct->nLineHeight =
max(lpHierFileStruct->nBitmapHeight1, lpHierFileStruct->nTextHeight);
GlobalFree(lpbiReadWrite);
UnlockResource(hResMem);
FreeResource(hResMem);
if (!lpHierFileStruct->hbmIcons1)
return FALSE;
lpHierFileStruct->hbmMem1 = SelectObject(lpHierFileStruct->hdcMem1, lpHierFileStruct->hbmIcons1);
if (!lpHierFileStruct->hbmMem1)
return FALSE;
/*+----------------------------------------------------------------------+
| For Second Bitmap |
+----------------------------------------------------------------------+*/
// (Re)Load the Bitmap ( original from disk )
hRes = FindResource(hInstance, MAKEINTRESOURCE(nBitmap2), RT_BITMAP);
if (!hRes)
return FALSE;
hResMem = LoadResource(hInstance, hRes);
if (!hResMem)
return FALSE;
// Now figure out the bitmaps background color.
// This code assumes the lower left corner is a
// bit in the background color.
lpbiReadOnly = (LPBITMAPINFOHEADER) LockResource(hResMem);
if (!lpbiReadOnly)
return FALSE;
// Determine size of bitmap information header plus color table entries
biSize = lpbiReadOnly->biSize + ((1 << (lpbiReadOnly->biBitCount)) * sizeof(RGBQUAD));
// Allocate copy of the bitmap information to munge on
lpbiReadWrite = (LPBITMAPINFOHEADER)GlobalAlloc(GPTR, biSize);
if (!lpbiReadWrite)
return FALSE;
memcpy(lpbiReadWrite, lpbiReadOnly, biSize);
// Color table immediately follows bitmap information header
lpColorTable = (DWORD FAR *)((LPBYTE)lpbiReadWrite + lpbiReadWrite->biSize);
// No need to munge bits so use original
lpBits = (LPBYTE)lpbiReadOnly + biSize;
bc = (lpBits[0] & 0xF0) >> 4; // ASSUMES LOWER LEFT CORNER IS BG!!
lpColorTable[bc] = RGB2BGR(GetSysColor(COLOR_WINDOW));
hDC = GetDC(NULL);
lpHierFileStruct->hbmIcons2 = CreateDIBitmap(
hDC,
lpbiReadWrite,
CBM_INIT,
lpBits,
(LPBITMAPINFO)lpbiReadWrite,
DIB_RGB_COLORS
);
ReleaseDC(NULL, hDC);
// These are hard-coded as 1 row and 3 columns for the checkbox bitmap
lpHierFileStruct->nBitmapHeight2 = (WORD)lpbiReadWrite->biHeight / 1;
lpHierFileStruct->nBitmapWidth2 = (WORD)lpbiReadWrite->biWidth / 3;
GlobalFree(lpbiReadWrite);
UnlockResource(hResMem);
FreeResource(hResMem);
if (!lpHierFileStruct->hbmIcons2)
return FALSE;
lpHierFileStruct->hbmMem2 = SelectObject(lpHierFileStruct->hdcMem2, lpHierFileStruct->hbmIcons2);
if (!lpHierFileStruct->hbmMem2)
return FALSE;
return TRUE;
} // HierFile_DrawInit
BOOL HierFile_InCheck(int nLevel, int xPos, LPHEIRDRAWSTRUCT lpHierFileStruct) {
WORD wIndent;
wIndent = ((int)(nLevel) * lpHierFileStruct->nBitmapWidth1) + XBMPOFFSET;
if ((xPos > wIndent) && (xPos < wIndent + lpHierFileStruct->nBitmapWidth2))
return TRUE;
return FALSE;
} // HierFile_InCheck
VOID HierFile_OnDrawItem(HWND hwnd,
const DRAWITEMSTRUCT FAR* lpDrawItem,
int nLevel,
DWORD dwConnectLevel,
TCHAR *szText,
int nRow,
int nColumn,
int nColumn2,
LPHEIRDRAWSTRUCT lpHierFileStruct) {
HDC hDC;
WORD wIndent, wTopBitmap, wTopText;
RECT rcTemp;
if ( lpDrawItem->itemID == (UINT)-1 )
return ;
hDC = lpDrawItem->hDC;
CopyRect(&rcTemp, &lpDrawItem->rcItem);
wIndent = (WORD)(rcTemp.left + ((int)(nLevel) * lpHierFileStruct->nBitmapWidth1) + XBMPOFFSET);
rcTemp.left = wIndent + lpHierFileStruct->nBitmapWidth1 + lpHierFileStruct->nBitmapWidth2;
wTopText = (WORD)(rcTemp.top + ((rcTemp.bottom - rcTemp.top) / 2) - (lpHierFileStruct->nTextHeight / 2));
wTopBitmap = (WORD)(rcTemp.top + ((rcTemp.bottom - rcTemp.top) / 2) - (lpHierFileStruct->nBitmapHeight1 / 2));
if (lpDrawItem->itemAction == ODA_FOCUS)
goto DealWithFocus;
else if (lpDrawItem->itemAction == ODA_SELECT)
goto DealWithSelection;
/*+-----------------------------------------------------------------------+
| Connecting Line code |
+-----------------------------------------------------------------------+*/
if (lpHierFileStruct->bLines && nLevel) {
DWORD dwMask = 1;
int nTempLevel;
int x,y;
// draw lines in text color
SetBkColor(hDC, GetSysColor(COLOR_WINDOWTEXT));
// Draw a series of | lines for outer levels
x = lpHierFileStruct->nBitmapWidth1 / 2 + XBMPOFFSET;
for ( nTempLevel = 0; nTempLevel < nLevel ; nTempLevel++)
{
if ( dwConnectLevel & dwMask )
FastRect(hDC, x, rcTemp.top, 1, rcTemp.bottom - rcTemp.top);
x += lpHierFileStruct->nBitmapWidth2;
dwMask *= 2;
}
// Draw the short vert line up towards the parent
nTempLevel = nLevel-1;
dwMask *= 2;
x = nTempLevel * lpHierFileStruct->nBitmapWidth1 + lpHierFileStruct->nBitmapWidth1 / 2 + XBMPOFFSET;
if ( dwConnectLevel & dwMask )
y = rcTemp.bottom;
else
y = rcTemp.bottom - lpHierFileStruct->nLineHeight / 2;
FastRect(hDC, x, rcTemp.top, 1, y - rcTemp.top);
// Draw short horiz bar to right
FastRect(hDC, x, rcTemp.bottom-lpHierFileStruct->nLineHeight / 2, lpHierFileStruct->nBitmapWidth1 / 2, 1);
}
/*+-----------------------------------------------------------------------+
| Bitmaps |
+-----------------------------------------------------------------------+*/
// Draw the checkbox bitmap
BitBlt(hDC,
wIndent, wTopBitmap,
lpHierFileStruct->nBitmapWidth2, lpHierFileStruct->nBitmapHeight2,
lpHierFileStruct->hdcMem2,
nColumn2 * lpHierFileStruct->nBitmapWidth2,
0 * lpHierFileStruct->nBitmapHeight2,
SRCCOPY);
// Now the other app specific bitmap adjusted over for the checkbox bitmap
BitBlt(hDC,
wIndent + lpHierFileStruct->nBitmapWidth2, wTopBitmap,
lpHierFileStruct->nBitmapWidth1, lpHierFileStruct->nBitmapHeight1,
lpHierFileStruct->hdcMem1,
nColumn * lpHierFileStruct->nBitmapWidth1,
nRow * lpHierFileStruct->nBitmapHeight1,
SRCCOPY);
DealWithSelection:
if (lpDrawItem->itemState & ODS_SELECTED) {
SetBkColor(hDC, GetSysColor(COLOR_HIGHLIGHT));
SetTextColor(hDC, GetSysColor(COLOR_HIGHLIGHTTEXT));
} else {
SetBkColor(hDC, GetSysColor(COLOR_WINDOW));
SetTextColor(hDC, GetSysColor(COLOR_WINDOWTEXT));
}
ExtTextOut(hDC, rcTemp.left + 1, wTopText, ETO_CLIPPED | ETO_OPAQUE,
&rcTemp, szText, lstrlen(szText), NULL);
if (lpDrawItem->itemState & ODS_FOCUS && lpDrawItem->itemAction != ODA_SELECT) {
DealWithFocus:
DrawFocusRect(hDC, &rcTemp);
}
} // HierFile_OnDrawItem
// draw a solid color rectangle quickly
static VOID near FastRect(HDC hDC, int x, int y, int cx, int cy) {
RECT rc;
rc.left = x;
rc.right = x+cx;
rc.top = y;
rc.bottom = y+cy;
ExtTextOut(hDC,x,y,ETO_OPAQUE,&rc,NULL,0,NULL);
} // FastRect
BOOL HierFile_IsOpened(LPHEIRDRAWSTRUCT lpHierFileStruct, DWORD_PTR dwData) {
// For Now just a dumb search
//
int Count;
for ( Count = 0; Count < lpHierFileStruct->NumOpened; Count++ ) {
if ( lpHierFileStruct->Opened[Count] == dwData ) {
return TRUE;
}
}
return FALSE;
} // HierFile_IsOpened
VOID HierFile_OpenItem(LPHEIRDRAWSTRUCT lpHierFileStruct, DWORD_PTR dwData) {
lpHierFileStruct->NumOpened++;
if (lpHierFileStruct->Opened == NULL )
lpHierFileStruct->Opened =
(DWORD_PTR *)_fmalloc(sizeof(DWORD_PTR)*lpHierFileStruct->NumOpened);
else
lpHierFileStruct->Opened =
(DWORD_PTR *)_frealloc(lpHierFileStruct->Opened,
sizeof(DWORD_PTR)*lpHierFileStruct->NumOpened);
lpHierFileStruct->Opened[lpHierFileStruct->NumOpened-1] = dwData;
} // HierFile_OpenItem
VOID HierFile_CloseItem(LPHEIRDRAWSTRUCT lpHierFileStruct, DWORD_PTR dwData) {
// For Now just a dumb search
//
int Count;
for ( Count = 0; Count < lpHierFileStruct->NumOpened; Count++ ) {
if ( lpHierFileStruct->Opened[Count] == dwData ) {
if (--lpHierFileStruct->NumOpened == 0 ) {
_ffree(lpHierFileStruct->Opened);
lpHierFileStruct->Opened = NULL;
}
else {
if ( Count < lpHierFileStruct->NumOpened ) {
_fmemmove(&(lpHierFileStruct->Opened[Count]),
&(lpHierFileStruct->Opened[Count+1]),
sizeof(DWORD_PTR)*(lpHierFileStruct->NumOpened-Count));
}
lpHierFileStruct->Opened =
(DWORD_PTR *)_frealloc(lpHierFileStruct->Opened,
sizeof(DWORD_PTR)*lpHierFileStruct->NumOpened);
}
}
}
} // HierFile_CloseItem
VOID HierFile_ShowKids(LPHEIRDRAWSTRUCT lpHierFileStruct,
HWND hwndList, WORD wCurrentSelection, WORD wKids) {
WORD wBottomIndex;
WORD wTopIndex;
WORD wNewTopIndex;
WORD wExpandInView;
RECT rc;
wTopIndex = (WORD)SendMessage(hwndList, LB_GETTOPINDEX, 0, 0L);
GetClientRect(hwndList, &rc);
wBottomIndex = (WORD)(wTopIndex + (rc.bottom+1) / lpHierFileStruct->nLineHeight);
wExpandInView = (wBottomIndex - wCurrentSelection);
if (wKids >= wExpandInView) {
wNewTopIndex = min(wCurrentSelection, wTopIndex + wKids - wExpandInView + 1);
SendMessage(hwndList, LB_SETTOPINDEX, (WORD)wNewTopIndex, 0L);
}
} // HierFile_ShowKids