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added some more comments

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git-svn-id: svn://svn.code.sf.net/p/processhacker/code@3034 21ef857c-d57f-4fe0-8362-d861dc6d29cd
This commit is contained in:
wj32
2010-04-08 00:10:29 +00:00
parent c7adbc1c09
commit bf0f43923a
2 changed files with 49 additions and 11 deletions
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2.x/trunk/phlib/queuedlock.c
+5 -1
View File
@@ -75,9 +75,13 @@
* A spin count is also used before blocking on the keyed
* event.
*
* Queued locks can also act as condition variables, with
* Queued locks can act as condition variables, with
* wait, pulse and pulse all support. Waiters are released
* in FIFO order.
*
* Queued locks can act as wake events. These are designed
* for tiny one-bit locks which share a single event to block
* on. Spurious wake-ups are a part of normal operation.
*/
#include <phbase.h>
2.x/trunk/phlib/treelist.c
+44 -10
View File
@@ -20,6 +20,26 @@
* along with Process Hacker. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* The tree list is a wrapper around the list view control, in effect
* providing a tree view with columns. The sole reason I created this
* is because other tree list controls out there are MFC-based!
*
* A callback function must be specified, which recieves requests for
* data and certain notifications. The tree structure is built by
* sending the TreeListGetChildren message recursively, and flattening
* the tree into a list which is then displayed by a list view in
* virtual mode. The list view is custom drawn due to the indenting
* and icon drawing involved. The list view window procedure is also
* hooked in order to trap mouse down events on the plus/minus glyph.
*
* Currently the entire list is re-created when nodes are added, but
* this is obviously not very efficient and will change.
*
* PH_STRINGREFs are used in most places to speed up the code, avoiding
* unneeded wcslen calls.
*/
#include <phgui.h>
#include <treelist.h>
#include <treelistp.h>
@@ -212,6 +232,7 @@ LRESULT CALLBACK PhpTreeListWndProc(
PhpReferenceTreeListContext(context);
SetProp(context->ListViewHandle, L"TreeListContext", (HANDLE)context);
// Open theme data if available.
PhpReloadThemeData(context);
SendMessage(hwnd, WM_SETFONT, (WPARAM)PhIconTitleFont, FALSE);
@@ -262,16 +283,16 @@ LRESULT CALLBACK PhpTreeListWndProc(
if (ldi->item.mask & LVIF_TEXT)
{
PH_STRINGREF text;
ULONG bytesToCopy;
if (PhpGetNodeText(context, node, ldi->item.iSubItem, &text))
{
PhCopyUnicodeStringZ(
text.Buffer,
min(text.Length / 2, ldi->item.cchTextMax - 1),
ldi->item.pszText,
ldi->item.cchTextMax,
NULL
);
// Never copy more than cchTextMax - 1 characters.
bytesToCopy = min(text.Length, (ldi->item.cchTextMax - 1) * 2);
// Copy and null terminate.
memcpy(ldi->item.pszText, text.Buffer, bytesToCopy);
ldi->item.pszText[bytesToCopy / 2] = 0;
}
}
}
@@ -280,7 +301,7 @@ LRESULT CALLBACK PhpTreeListWndProc(
{
NMLISTVIEW *lv = (NMLISTVIEW *)hdr;
if (lv->iItem != -1)
if (lv->iItem != -1) // -1 means all items
{
PPH_TREELIST_NODE node = context->List->Items[lv->iItem];
@@ -311,6 +332,9 @@ LRESULT CALLBACK PhpTreeListWndProc(
PhpApplyNodeState(node, lv->uNewState);
}
// bErase needs to be TRUE, otherwise the item background
// colors don't get refreshed properly (the selection highlight
// on some items may still be active).
InvalidateRect(context->ListViewHandle, NULL, TRUE);
}
}
@@ -410,6 +434,8 @@ LRESULT CALLBACK PhpTreeListWndProc(
if (!PhpGetNodeChildren(context, NULL, &children, &numberOfChildren))
return FALSE;
// At this point we rebuild the entire list.
PhClearList(context->List);
context->CanAnyExpand = FALSE;
@@ -724,6 +750,8 @@ LRESULT CALLBACK PhpTreeListLvHookWndProc(
PPH_TREELIST_NODE node;
LONG glyphX;
// Process mouse events taking place on the plus/minus glyph.
htInfo.pt.x = x;
htInfo.pt.y = y;
@@ -777,9 +805,10 @@ LRESULT CALLBACK PhpTreeListLvHookWndProc(
LVCOLUMN lvColumn;
PPH_TREELIST_COLUMN column;
// A column has been resized, so update our stored width.
lvColumn.mask = LVCF_SUBITEM;
// Update the width.
if (ListView_GetColumn(hwnd, header2->iItem, &lvColumn))
{
column = context->Columns[lvColumn.iSubItem];
@@ -795,6 +824,9 @@ LRESULT CALLBACK PhpTreeListLvHookWndProc(
LPNMHEADER header2 = (LPNMHEADER)header;
LVCOLUMN lvColumn;
// A column has been clicked, so update the sorting
// information.
if (header2->iItem == context->SortColumn)
{
if (context->TriState)
@@ -836,6 +868,8 @@ LRESULT CALLBACK PhpTreeListLvHookWndProc(
{
if (header->hwndFrom == ListView_GetHeader(hwnd))
{
// Columns have been reordered, so refresh our entire column list.
PhpRefreshColumns(context);
}
}
@@ -1069,7 +1103,7 @@ static VOID PhpCustomDrawPrePaintSubItem(
{
textRect.left += node->Level * 16;
if (Context->CanAnyExpand)
if (Context->CanAnyExpand) // flag is used so we can avoid indenting when it's a flat list
{
BOOLEAN drewUsingTheme = FALSE;
RECT themeRect;