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comctl32: header: Correct HDN_GETDISPINFO. Use it during drawing. 

Improve HEADER_SendHeaderDispInfoNotify and rename it to
HEADER_PrepareCallbackItems. The new HEADER_FreeCallbackItems frees
the buffers allocated by it. GetItemT and DrawItem calls these
functions.
This commit is contained in:
Mikołaj Zalewski 2006-05-13 21:31:12 +02:00 committed by Alexandre Julliard
parent 96190f77b9
commit 74c3b366d3
1 changed files with 87 additions and 69 deletions
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154
dlls/comctl32/header.c
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@ -94,11 +94,15 @@ typedef struct
#define VERT_BORDER 3
#define DIVIDER_WIDTH 10
#define MAX_HEADER_TEXT_LEN 260
#define HDN_UNICODE_OFFSET 20
#define HDN_FIRST_UNICODE (HDN_FIRST-HDN_UNICODE_OFFSET)
#define HEADER_GetInfoPtr(hwnd) ((HEADER_INFO *)GetWindowLongPtrW(hwnd,0))
static BOOL HEADER_PrepareCallbackItems(HWND hwnd, INT iItem, INT reqMask);
static void HEADER_FreeCallbackItems(HEADER_ITEM *lpItem);
static const WCHAR themeClass[] = {'H','e','a','d','e','r',0};
static WCHAR emptyString[] = {0};
@ -235,6 +239,7 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
if (r.right - r.left == 0)
return phdi->rect.right;
HEADER_PrepareCallbackItems(hwnd, iItem, HDI_TEXT|HDI_IMAGE);
if (theme != NULL) {
int state = (phdi->bDown) ? HIS_PRESSED :
(bHotTrack ? HIS_HOT : HIS_NORMAL);
@ -422,6 +427,7 @@ HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
}
}/*Ownerdrawn*/
HEADER_FreeCallbackItems(phdi);
return phdi->rect.right;
}
@ -725,96 +731,117 @@ HEADER_SendHeaderNotifyT (HWND hwnd, UINT code, INT iItem, INT mask, HDITEMW *lp
}
/**
* Send Disp Info notification.
* Prepare callback items
* depends on NMHDDISPINFOW having same structure as NMHDDISPINFOA
* (so we handle the two cases only doing a specific cast for pszText).
* Checks if any of the required field are callback. If there are sends a
* NMHDISPINFO notify to retrieve these items. The items are stored in the
* HEADER_ITEM pszText and iImage fields. They should be freed with
* HEADER_FreeCallbackItems.
*
* @param hwnd : hwnd header container handler
* @param mask : notification mask (usually HDI_TEXT or HDI_IMAGE)
* @param pDispInfo : NMHDDISPINFO structure (can be unicode or ansi)
* @param isW : TRUE if dispinfo is Unicode
* @param iItem : the header item id
* @param reqMask : required fields. If any of them is callback this function will fetch it
*
* @return TRUE on success, else FALSE
*/
static BOOL
HEADER_SendHeaderDispInfoNotify(HWND hwnd, INT iItem, INT mask, LPHDITEMW phdi, HEADER_ITEM* lpItem, BOOL isW)
HEADER_PrepareCallbackItems(HWND hwnd, INT iItem, INT reqMask)
{
HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
BOOL ret;
BOOL convertToAnsi = FALSE;
BOOL convertToUnicode = FALSE;
BOOL isUnicodeNotify = FALSE;
HEADER_ITEM *lpItem = &infoPtr->items[iItem];
DWORD mask = reqMask & lpItem->callbackMask;
NMHDDISPINFOW dispInfo;
void *pvBuffer = NULL;
if (mask & HDI_TEXT)
if (mask == 0)
return TRUE;
if (mask&HDI_TEXT && lpItem->pszText != NULL)
{
convertToAnsi = (isW && infoPtr->nNotifyFormat == NFR_ANSI);
convertToUnicode = (!isW && infoPtr->nNotifyFormat == NFR_UNICODE);
ERR("(): function called without a call to FreeCallbackItems\n");
Free(lpItem->pszText);
lpItem->pszText = NULL;
}
isUnicodeNotify = (isW && !convertToAnsi);
memset(&dispInfo, 0, sizeof(NMHDDISPINFOW));
dispInfo.hdr.hwndFrom = hwnd;
dispInfo.hdr.idFrom = GetWindowLongPtrW (hwnd, GWLP_ID);
if (isUnicodeNotify || convertToUnicode)
if (infoPtr->nNotifyFormat == NFR_UNICODE)
{
dispInfo.hdr.code = HDN_GETDISPINFOW;
if (mask & HDI_TEXT)
pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(WCHAR));
}
else
{
dispInfo.hdr.code = HDN_GETDISPINFOA;
if (mask & HDI_TEXT)
pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(CHAR));
}
dispInfo.pszText = (LPWSTR)pvBuffer;
dispInfo.cchTextMax = (pvBuffer!=NULL?MAX_HEADER_TEXT_LEN:0);
dispInfo.iItem = iItem;
dispInfo.mask = mask;
/*
dispInfo.pszText = Alloc(sizeof(WCHAR) * 260);
dispInfo.cchTextMax = 260;
*/
ret = (BOOL) SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
(WPARAM) dispInfo.hdr.idFrom,
(LPARAM) &dispInfo);
dispInfo.lParam = lpItem->lParam;
TRACE("Sending HDN_GETDISPINFO%c\n", infoPtr->nNotifyFormat == NFR_UNICODE?'W':'A');
SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
(WPARAM) dispInfo.hdr.idFrom,
(LPARAM) &dispInfo);
TRACE("SendMessage returns(mask:0x%x,str:%s,lParam:%p)\n",
dispInfo.mask,
(isUnicodeNotify ? debugstr_w(dispInfo.pszText) : (LPSTR) dispInfo.pszText),
(infoPtr->nNotifyFormat == NFR_UNICODE ? debugstr_w(dispInfo.pszText) : (LPSTR) dispInfo.pszText),
(void*) dispInfo.lParam);
if (mask & HDI_IMAGE)
lpItem->iImage = dispInfo.iImage;
if (mask & HDI_TEXT)
{
if (infoPtr->nNotifyFormat == NFR_UNICODE)
{
lpItem->pszText = (LPWSTR)pvBuffer;
/* the user might have used his own buffer */
if (dispInfo.pszText != lpItem->pszText)
Str_GetPtrW(dispInfo.pszText, lpItem->pszText, MAX_HEADER_TEXT_LEN);
}
else
{
Str_SetPtrAtoW(&lpItem->pszText, (LPSTR)dispInfo.pszText);
Free(pvBuffer);
}
}
if (dispInfo.mask & HDI_DI_SETITEM)
{
if (dispInfo.mask & HDI_IMAGE)
{
lpItem->iImage = dispInfo.iImage;
lpItem->callbackMask &= ~HDI_IMAGE;
}
if (dispInfo.mask & HDI_TEXT)
{
if (isUnicodeNotify || convertToUnicode)
Str_SetPtrW(&lpItem->pszText, (LPCWSTR)dispInfo.pszText);
else /*if (convertToAnsi || !isW)*/
Str_SetPtrAtoW(&lpItem->pszText, (LPCSTR)dispInfo.pszText);
lpItem->callbackMask &= ~HDI_TEXT;
}
FIXME("NMHDDISPINFO returns with flags HDI_DI_SETITEM\n");
/* make the items permanent */
lpItem->callbackMask &= ~dispInfo.mask;
}
if (NULL != phdi)
{
if ((phdi->mask & mask) & HDI_IMAGE)
{
phdi->iImage = dispInfo.iImage;
}
if ((phdi->mask & mask) & HDI_TEXT)
{
if (isUnicodeNotify)
Str_GetPtrW ((LPCWSTR)dispInfo.pszText, phdi->pszText, phdi->cchTextMax);
else if (convertToUnicode)
Str_GetPtrWtoA ((LPCWSTR)dispInfo.pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
else /*if (!isW) */
Str_GetPtrA ((LPCSTR)dispInfo.pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
}
}
return ret;
return TRUE;
}
/***
* DESCRIPTION:
* Free the items that might be allocated with HEADER_PrepareCallbackItems
*
* PARAMETER(S):
* [I] lpItem : the item to free the data
*
*/
static void
HEADER_FreeCallbackItems(HEADER_ITEM *lpItem)
{
if (lpItem->callbackMask&HDI_TEXT && lpItem->pszText != NULL)
{
Free(lpItem->pszText);
lpItem->pszText = NULL;
}
if (lpItem->callbackMask&HDI_IMAGE)
lpItem->iImage = I_IMAGECALLBACK;
}
static BOOL
HEADER_SendClickNotify (HWND hwnd, UINT code, INT iItem)
@ -940,6 +967,7 @@ HEADER_GetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
return FALSE;
lpItem = &infoPtr->items[nItem];
HEADER_PrepareCallbackItems(hwnd, nItem, phdi->mask);
if (phdi->mask & HDI_BITMAP)
phdi->hbm = lpItem->hbm;
@ -956,10 +984,6 @@ HEADER_GetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
if (phdi->mask & HDI_IMAGE)
{
phdi->iImage = lpItem->iImage;
if (lpItem->callbackMask & HDI_IMAGE)
{
HEADER_SendHeaderDispInfoNotify(hwnd, nItem, HDI_IMAGE, phdi, lpItem, bUnicode);
}
}
if (phdi->mask & HDI_ORDER)
@ -967,19 +991,13 @@ HEADER_GetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
if (phdi->mask & HDI_TEXT)
{
if (lpItem->callbackMask & HDI_TEXT)
{
HEADER_SendHeaderDispInfoNotify(hwnd, nItem, HDI_TEXT, phdi, lpItem, bUnicode);
}
if (bUnicode)
Str_GetPtrW (lpItem->pszText, phdi->pszText, phdi->cchTextMax);
else
{
if (bUnicode)
Str_GetPtrW (lpItem->pszText, phdi->pszText, phdi->cchTextMax);
else
Str_GetPtrWtoA (lpItem->pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
}
Str_GetPtrWtoA (lpItem->pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
}
HEADER_FreeCallbackItems(lpItem);
return TRUE;
}