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comctl32: Reduce memory usage of the syslink control.

This commit is contained in:
Thomas Weidenmueller 2006-01-06 13:08:09 +01:00 committed by Alexandre Julliard
parent adc416b756
commit bb56d907e5
1 changed files with 88 additions and 66 deletions
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148
dlls/comctl32/syslink.c
View File

@ -1,7 +1,7 @@
/*
* SysLink control
*
* Copyright 2004, 2005 Thomas Weidenmueller <w3seek@reactos.com>
* Copyright 2004 - 2006 Thomas Weidenmueller <w3seek@reactos.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -62,7 +62,6 @@ typedef enum
typedef struct _DOC_ITEM
{
struct _DOC_ITEM *Next; /* Address to the next item */
LPWSTR Text; /* Text of the document item */
UINT nText; /* Number of characters of the text */
SL_ITEM_TYPE Type; /* type of the item */
PDOC_TEXTBLOCK Blocks; /* Array of text blocks */
@ -79,6 +78,7 @@ typedef struct _DOC_ITEM
UINT Dummy;
} Text;
} u;
WCHAR Text[1]; /* Text of the document item */
} DOC_ITEM, *PDOC_ITEM;
typedef struct
@ -116,10 +116,16 @@ static const WCHAR SL_LINKCLOSE[] = { '<','/','a','>',0 };
static VOID SYSLINK_FreeDocItem (PDOC_ITEM DocItem)
{
if(DocItem->Type == slLink)
{
if (DocItem->u.Link.szID != NULL)
{
Free(DocItem->u.Link.szID);
}
if (DocItem->u.Link.szUrl != NULL)
{
Free(DocItem->u.Link.szUrl);
}
}
/* we don't free Text because it's just a pointer to a character in the
entire window text string */
@ -135,16 +141,16 @@ static PDOC_ITEM SYSLINK_AppendDocItem (SYSLINK_INFO *infoPtr, LPCWSTR Text, UIN
SL_ITEM_TYPE type, PDOC_ITEM LastItem)
{
PDOC_ITEM Item;
Item = Alloc(sizeof(DOC_ITEM) + ((textlen + 1) * sizeof(WCHAR)));
textlen = min(textlen, lstrlenW(Text));
Item = Alloc(FIELD_OFFSET(DOC_ITEM, Text[textlen + 1]));
if(Item == NULL)
{
ERR("Failed to alloc DOC_ITEM structure!\n");
return NULL;
}
textlen = min(textlen, lstrlenW(Text));
Item->Next = NULL;
Item->Text = (LPWSTR)(Item + 1);
Item->nText = textlen;
Item->Type = type;
Item->Blocks = NULL;
@ -159,7 +165,6 @@ static PDOC_ITEM SYSLINK_AppendDocItem (SYSLINK_INFO *infoPtr, LPCWSTR Text, UIN
}
lstrcpynW(Item->Text, Text, textlen + 1);
Item->Text[textlen] = 0;
return Item;
}
@ -351,12 +356,11 @@ CheckParameter:
if(lpID != NULL)
{
nc = min(lenId, strlenW(lpID));
nc = min(nc, MAX_LINKID_TEXT);
Last->u.Link.szID = Alloc((MAX_LINKID_TEXT + 1) * sizeof(WCHAR));
nc = min(nc, MAX_LINKID_TEXT - 1);
Last->u.Link.szID = Alloc((nc + 1) * sizeof(WCHAR));
if(Last->u.Link.szID != NULL)
{
lstrcpynW(Last->u.Link.szID, lpID, nc + 1);
Last->u.Link.szID[nc] = 0;
}
}
else
@ -364,12 +368,11 @@ CheckParameter:
if(lpUrl != NULL)
{
nc = min(lenUrl, strlenW(lpUrl));
nc = min(nc, L_MAX_URL_LENGTH);
Last->u.Link.szUrl = Alloc((L_MAX_URL_LENGTH + 1) * sizeof(WCHAR));
nc = min(nc, L_MAX_URL_LENGTH - 1);
Last->u.Link.szUrl = Alloc((nc + 1) * sizeof(WCHAR));
if(Last->u.Link.szUrl != NULL)
{
lstrcpynW(Last->u.Link.szUrl, lpUrl, nc + 1);
Last->u.Link.szUrl[nc] = 0;
}
}
else
@ -431,12 +434,11 @@ CheckParameter:
if(lpID != NULL)
{
nc = min(lenId, strlenW(lpID));
nc = min(nc, MAX_LINKID_TEXT);
Last->u.Link.szID = Alloc((MAX_LINKID_TEXT + 1) * sizeof(WCHAR));
nc = min(nc, MAX_LINKID_TEXT - 1);
Last->u.Link.szID = Alloc((nc + 1) * sizeof(WCHAR));
if(Last->u.Link.szID != NULL)
{
lstrcpynW(Last->u.Link.szID, lpID, nc + 1);
Last->u.Link.szID[nc] = 0;
}
}
else
@ -444,12 +446,11 @@ CheckParameter:
if(lpUrl != NULL)
{
nc = min(lenUrl, strlenW(lpUrl));
nc = min(nc, L_MAX_URL_LENGTH);
Last->u.Link.szUrl = Alloc((L_MAX_URL_LENGTH + 1) * sizeof(WCHAR));
nc = min(nc, L_MAX_URL_LENGTH - 1);
Last->u.Link.szUrl = Alloc((nc + 1) * sizeof(WCHAR));
if(Last->u.Link.szUrl != NULL)
{
lstrcpynW(Last->u.Link.szUrl, lpUrl, nc + 1);
Last->u.Link.szUrl[nc] = 0;
}
}
else
@ -751,6 +752,7 @@ static VOID SYSLINK_Render (SYSLINK_INFO *infoPtr, HDC hdc)
{
Free(bl);
bl = NULL;
nBlocks = 0;
}
break;
}
@ -769,11 +771,12 @@ static VOID SYSLINK_Render (SYSLINK_INFO *infoPtr, HDC hdc)
{
Free(bl);
bl = NULL;
nBlocks = 0;
}
}
else
{
bl = Alloc((nBlocks + 1) * sizeof(DOC_TEXTBLOCK));
bl = Alloc(sizeof(DOC_TEXTBLOCK));
if (bl != NULL)
nBlocks++;
}
@ -820,8 +823,6 @@ static VOID SYSLINK_Render (SYSLINK_INFO *infoPtr, HDC hdc)
{
Current->Blocks = bl;
}
else
Current->Blocks = NULL;
}
SelectObject(hdc, hOldFont);
@ -1037,8 +1038,10 @@ static PDOC_ITEM SYSLINK_SetFocusLink (SYSLINK_INFO *infoPtr, PDOC_ITEM DocItem)
static LRESULT SYSLINK_SetItem (SYSLINK_INFO *infoPtr, PLITEM Item)
{
PDOC_ITEM di;
int nc;
PWSTR szId = NULL;
PWSTR szUrl = NULL;
BOOL Repaint = FALSE;
BOOL Ret = TRUE;
if(!(Item->mask & LIF_ITEMINDEX) || !(Item->mask & (LIF_FLAGSMASK)))
{
@ -1053,6 +1056,59 @@ static LRESULT SYSLINK_SetItem (SYSLINK_INFO *infoPtr, PLITEM Item)
return FALSE;
}
if(Item->mask & LIF_ITEMID)
{
nc = min(lstrlenW(Item->szID), MAX_LINKID_TEXT - 1);
szId = Alloc((nc + 1) * sizeof(WCHAR));
if(szId)
{
lstrcpynW(szId, Item->szID, nc + 1);
}
else
{
ERR("Unable to allocate memory for link id\n");
return FALSE;
}
}
if(Item->mask & LIF_URL)
{
nc = min(lstrlenW(Item->szUrl), L_MAX_URL_LENGTH - 1);
szUrl = Alloc((nc + 1) * sizeof(WCHAR));
if(szUrl)
{
lstrcpynW(szUrl, Item->szUrl, nc + 1);
}
else
{
if (szId)
{
Free(szId);
}
ERR("Unable to allocate memory for link url\n");
return FALSE;
}
}
if(Item->mask & LIF_ITEMID)
{
if(di->u.Link.szID)
{
Free(di->u.Link.szID);
}
di->u.Link.szID = szId;
}
if(Item->mask & LIF_URL)
{
if(di->u.Link.szUrl)
{
Free(di->u.Link.szUrl);
}
di->u.Link.szUrl = szUrl;
}
if(Item->mask & LIF_STATE)
{
UINT oldstate = di->u.Link.state;
@ -1066,46 +1122,12 @@ static LRESULT SYSLINK_SetItem (SYSLINK_INFO *infoPtr, PLITEM Item)
SYSLINK_SetFocusLink(infoPtr, ((di->u.Link.state & LIS_FOCUSED) ? di : NULL));
}
if(Item->mask & LIF_ITEMID)
{
if(!di->u.Link.szID)
{
di->u.Link.szID = Alloc((MAX_LINKID_TEXT + 1) * sizeof(WCHAR));
if(!Item->szID)
{
ERR("Unable to allocate memory for link id\n");
Ret = FALSE;
}
}
if(di->u.Link.szID)
{
lstrcpynW(di->u.Link.szID, Item->szID, MAX_LINKID_TEXT + 1);
}
}
if(Item->mask & LIF_URL)
{
if(!di->u.Link.szUrl)
{
di->u.Link.szUrl = Alloc((MAX_LINKID_TEXT + 1) * sizeof(WCHAR));
if(!Item->szUrl)
{
ERR("Unable to allocate memory for link url\n");
Ret = FALSE;
}
}
if(di->u.Link.szUrl)
{
lstrcpynW(di->u.Link.szUrl, Item->szUrl, MAX_LINKID_TEXT + 1);
}
}
if(Repaint)
{
SYSLINK_RepaintLink(infoPtr, di);
}
return Ret;
return TRUE;
}
/***********************************************************************
@ -1143,7 +1165,7 @@ static LRESULT SYSLINK_GetItem (SYSLINK_INFO *infoPtr, PLITEM Item)
{
if(di->u.Link.szID)
{
lstrcpynW(Item->szID, di->u.Link.szID, MAX_LINKID_TEXT + 1);
lstrcpyW(Item->szID, di->u.Link.szID);
}
else
{
@ -1155,7 +1177,7 @@ static LRESULT SYSLINK_GetItem (SYSLINK_INFO *infoPtr, PLITEM Item)
{
if(di->u.Link.szUrl)
{
lstrcpynW(Item->szUrl, di->u.Link.szUrl, L_MAX_URL_LENGTH + 1);
lstrcpyW(Item->szUrl, di->u.Link.szUrl);
}
else
{
@ -1215,7 +1237,7 @@ static LRESULT SYSLINK_HitTest (SYSLINK_INFO *infoPtr, PLHITTESTINFO HitTest)
HitTest->item.stateMask = 0;
if(Current->u.Link.szID)
{
lstrcpynW(HitTest->item.szID, Current->u.Link.szID, MAX_LINKID_TEXT + 1);
lstrcpyW(HitTest->item.szID, Current->u.Link.szID);
}
else
{
@ -1223,7 +1245,7 @@ static LRESULT SYSLINK_HitTest (SYSLINK_INFO *infoPtr, PLHITTESTINFO HitTest)
}
if(Current->u.Link.szUrl)
{
lstrcpynW(HitTest->item.szUrl, Current->u.Link.szUrl, L_MAX_URL_LENGTH + 1);
lstrcpyW(HitTest->item.szUrl, Current->u.Link.szUrl);
}
else
{
@ -1285,7 +1307,7 @@ static LRESULT SYSLINK_SendParentNotify (SYSLINK_INFO *infoPtr, UINT code, PDOC_
nml.item.stateMask = 0;
if(Link->u.Link.szID)
{
lstrcpynW(nml.item.szID, Link->u.Link.szID, MAX_LINKID_TEXT + 1);
lstrcpyW(nml.item.szID, Link->u.Link.szID);
}
else
{
@ -1293,7 +1315,7 @@ static LRESULT SYSLINK_SendParentNotify (SYSLINK_INFO *infoPtr, UINT code, PDOC_
}
if(Link->u.Link.szUrl)
{
lstrcpynW(nml.item.szUrl, Link->u.Link.szUrl, L_MAX_URL_LENGTH + 1);
lstrcpyW(nml.item.szUrl, Link->u.Link.szUrl);
}
else
{