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[PROGMAN]

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Implement drag&drop support for program items. A similar functionality can be implemented later in our shell32/explorer, based on this code.
We do here better than Windows' progman since we can select and move more than one icon.
Note that if you test it on ReactOS you will see nice bugs coming from our (well, Wine's) comctl32.dll xD :P

svn path=/trunk/; revision=71329
This commit is contained in:
Hermès Bélusca-Maïto 2016-05-12 22:36:05 +00:00
parent a8097ca3e1
commit fb35282eb3
2 changed files with 95 additions and 0 deletions
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93
reactos/base/shell/progman/group.c
View file

@ -119,6 +119,7 @@ GROUP_GroupWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
PROGGROUP* group;
INT iItem;
LVITEMW lvItem;
POINT pt;
group = (PROGGROUP*)GetWindowLongPtrW(hWnd, 0);
@ -261,6 +262,98 @@ GROUP_GroupWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
PROGRAM_ExecuteProgram((PROGRAM*)lvItem.lParam);
break;
}
case LVN_BEGINDRAG:
{
POINT ptMin;
BOOL bFirst = TRUE;
for (iItem = SendMessageA(group->hListView, LVM_GETNEXTITEM, -1, LVNI_SELECTED);
iItem != -1;
iItem = SendMessageA(group->hListView, LVM_GETNEXTITEM, iItem, LVNI_SELECTED))
{
if (bFirst)
{
group->hDragImageList = (HIMAGELIST)SendMessageA(group->hListView,
LVM_CREATEDRAGIMAGE,
iItem,
(LPARAM)&pt);
ptMin = pt;
bFirst = FALSE;
}
else
{
HIMAGELIST hOneImageList, hTempImageList;
hOneImageList = (HIMAGELIST)SendMessageA(group->hListView,
LVM_CREATEDRAGIMAGE,
iItem,
(LPARAM)&pt);
hTempImageList = ImageList_Merge(group->hDragImageList,
0,
hOneImageList,
0,
pt.x - ptMin.x,
pt.y - ptMin.y);
ImageList_Destroy(group->hDragImageList);
ImageList_Destroy(hOneImageList);
group->hDragImageList = hTempImageList;
ptMin.x = min(ptMin.x, pt.x);
ptMin.y = min(ptMin.y, pt.y);
}
}
// pt = ((LPNMLISTVIEW)lParam)->ptAction;
pt.x = ((LPNMLISTVIEW)lParam)->ptAction.x;
pt.y = ((LPNMLISTVIEW)lParam)->ptAction.y;
group->ptStart = pt;
pt.x -= ptMin.x;
pt.y -= ptMin.y;
ImageList_BeginDrag(group->hDragImageList, 0, pt.x, pt.y);
MapWindowPoints(group->hListView, Globals.hMDIWnd, &pt, 1);
ImageList_DragEnter(Globals.hMDIWnd, pt.x, pt.y);
group->bDragging = TRUE;
group->hOldCursor = GetCursor();
SetCapture(group->hWnd);
break;
}
}
break;
case WM_MOUSEMOVE:
if (group->bDragging)
{
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
MapWindowPoints(group->hWnd, Globals.hMDIWnd, &pt, 1);
ImageList_DragMove(pt.x, pt.y);
}
break;
case WM_LBUTTONUP:
if (group->bDragging)
{
// LVHITTESTINFO lvhti;
POINT ptHit;
group->bDragging = FALSE;
ImageList_DragLeave(Globals.hMDIWnd);
ImageList_EndDrag();
ImageList_Destroy(group->hDragImageList);
ReleaseCapture();
SetCursor(group->hOldCursor);
ptHit.x = GET_X_LPARAM(lParam);
ptHit.y = GET_Y_LPARAM(lParam);
MapWindowPoints(group->hWnd, group->hListView, &ptHit, 1);
for (iItem = SendMessageA(group->hListView, LVM_GETNEXTITEM, -1, LVNI_SELECTED);
iItem != -1;
iItem = SendMessageA(group->hListView, LVM_GETNEXTITEM, iItem, LVNI_SELECTED))
{
SendMessageA(group->hListView, LVM_GETITEMPOSITION, iItem, (LPARAM)&pt);
pt.x += ptHit.x - group->ptStart.x;
pt.y += ptHit.y - group->ptStart.y;
SendMessageA(group->hListView, LVM_SETITEMPOSITION, iItem, MAKELPARAM(pt.x, pt.y));
}
}
break;
}

2
reactos/base/shell/progman/progman.h
View file

@ -47,6 +47,8 @@
#include <commctrl.h>
#include <richedit.h>
#include <windowsx.h>
#define MAX_STRING_LEN 255
#define MAX_PATHNAME_LEN 1024
#define MAX_LANGUAGE_NUMBER (PM_LAST_LANGUAGE - PM_FIRST_LANGUAGE)