Leaked source code of windows server 2003
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//-----------------------------------------------------------------------------
// File: populate.cpp
//
// Desc: This file contains the population functions. These are all
// accessed through PopulateAppropriately(). That function creates
// views & controls based on the type of the device that the passed
// DeviceUI represents.
//
// Copyright (C) 1999-2000 Microsoft Corporation. All Rights Reserved.
//-----------------------------------------------------------------------------
#include "common.hpp"
// these functions are internal to this filed, called only by
// PopulateAppropriately().
HRESULT PopulateViaGetImageInfo(CDeviceUI &ui);
HRESULT PopulateFromImageInfoHeader(CDeviceUI &ui, const DIDEVICEIMAGEINFOHEADERW &);
HRESULT PopulateListView(CDeviceUI &ui);
HRESULT PopulateErrorView(CDeviceUI &ui);
// Clears the entire passed DeviceUI, then fills it with views and
// controls based on device type. Tries to gaurantee that there will
// be at least one view.
HRESULT PopulateAppropriately(CDeviceUI &ui)
{
HRESULT hr = S_OK;
// first empty the ui
ui.Unpopulate();
// get device type
DWORD dwdt = ui.m_didi.dwDevType;
DWORD dwType = (DWORD)(LOBYTE(LOWORD(dwdt)));
DWORD dwSubType = (DWORD)(HIBYTE(LOWORD(dwdt)));
// based on type...
switch (dwType)
{
default:
// unless its a type we don't ever want views for,
// populate via the GetImageInfo() API
hr = PopulateViaGetImageInfo(ui);
if (SUCCEEDED(hr) && ui.GetNumViews() > 0)
return hr;
// if it failed or resulted in nothing,
// clear anything that might've been added
ui.Unpopulate();
// intentional fallthrough
case DI8DEVTYPE_MOUSE:
case DI8DEVTYPE_KEYBOARD:
//@@BEGIN_MSINTERNAL
#ifdef DDKBUILD
// don't do list view if we're in edit layout mode
if (ui.m_uig.QueryAllowEditLayout())
goto doerrorview;
#endif
//@@END_MSINTERNAL
// for types that we don't ever want views for
// we populate the list view without trying the above
hr = PopulateListView(ui);
// if we still failed or don't have any views,
// populate with error message view
if (FAILED(hr) || ui.GetNumViews() < 1)
{
// empty
ui.Unpopulate();
// show error message
//@@BEGIN_MSINTERNAL
#ifdef DDKBUILD
doerrorview:
#endif
//@@END_MSINTERNAL
hr = PopulateErrorView(ui);
}
// this function should guarantee success
assert(!FAILED(hr));
return hr;
}
}
// Calls the GetImageInfo() API to get the view images and controls
// for the entire device, and returns a failure if there's the
// slightest problem (if GII() fails, or if an image fails to load,
// etc.)
HRESULT PopulateViaGetImageInfo(CDeviceUI &ui)
{
if (!ui.m_lpDID)
return E_FAIL;
HRESULT hr = S_OK;
DIDEVICEIMAGEINFOHEADERW m_diImgInfoHdr;
LPDIDEVICEIMAGEINFOW &lprgdiImgData = m_diImgInfoHdr.lprgImageInfoArray;
ZeroMemory( &m_diImgInfoHdr, sizeof(DIDEVICEIMAGEINFOHEADERW) );
m_diImgInfoHdr.dwSize = sizeof(DIDEVICEIMAGEINFOHEADERW);
m_diImgInfoHdr.dwSizeImageInfo = sizeof(DIDEVICEIMAGEINFOW);
// Retrieve the required buffer size.
hr = ui.m_lpDID->GetImageInfo( &m_diImgInfoHdr );
if (FAILED(hr))
{
etrace1(_T("GetImageInfo() failed while trying to get required buffer size. hr = 0x%08x\n"), hr);
return E_FAIL;
}
// Allocate the buffer.
lprgdiImgData = (LPDIDEVICEIMAGEINFOW) malloc( (size_t)
(m_diImgInfoHdr.dwBufferSize = m_diImgInfoHdr.dwBufferUsed) );
if (lprgdiImgData == NULL)
{
etrace1(_T("Could not allocate buffer of size %d.\n"), m_diImgInfoHdr.dwBufferSize);
return E_FAIL;
}
trace(_T("Allocated buffer.\n"));
traceDWORD(m_diImgInfoHdr.dwBufferSize);
m_diImgInfoHdr.lprgImageInfoArray = lprgdiImgData;
// Get the display info.
hr = ui.m_lpDID->GetImageInfo( &m_diImgInfoHdr );
if (FAILED(hr))
{
etrace1(_T("GetImageInfo() failed trying to get image info. hr = 0x%08x\n"), hr);
free(lprgdiImgData);
lprgdiImgData = NULL;
return E_FAIL;
}
// actually populate now
traceDWORD(m_diImgInfoHdr.dwBufferUsed);
hr = PopulateFromImageInfoHeader(ui, m_diImgInfoHdr);
if (FAILED(hr))
return hr;
// free stuff
free(lprgdiImgData);
lprgdiImgData = NULL;
return S_OK;
}
// basically does the work for the above function after the header
// is actually retrieved
HRESULT PopulateFromImageInfoHeader(CDeviceUI &ui, const DIDEVICEIMAGEINFOHEADERW &dih)
{
tracescope(ts1, _T("CGetImageInfoPopHelper::Init()...\n"));
traceDWORD(dih.dwSizeImageInfo);
traceDWORD(dih.dwBufferSize);
traceDWORD(dih.dwBufferUsed);
if (dih.dwSizeImageInfo != sizeof(DIDEVICEIMAGEINFOW))
{
etrace(_T("dwSizeImageInfo Incorrect.\n"));
assert(0);
return E_FAIL;
}
DWORD dwNumElements = dih.dwBufferUsed / dih.dwSizeImageInfo;
if (dwNumElements * dih.dwSizeImageInfo != dih.dwBufferUsed
|| dih.dwBufferUsed < dih.dwBufferSize)
{
etrace(_T("Could not confidently calculate dwNumElements.\n"));
assert(0);
return E_FAIL;
}
DWORD i;
traceDWORD(dwNumElements);
bidirlookup<DWORD, int> offset_view;
{
tracescope(ts2, _T("First Pass...\n"));
for (i = 0; i < dwNumElements; i++)
if (dih.lprgImageInfoArray[i].dwFlags & DIDIFT_CONFIGURATION)
{
LPDIDEVICEIMAGEINFOW lpInfoBase = dih.lprgImageInfoArray;
DWORD index = i;
{
tracescope(ts1, _T("AddViewInfo()...\n"));
traceHEXPTR(lpInfoBase);
traceDWORD(index);
if (lpInfoBase == NULL)
{
etrace(_T("lpInfoBase NULL\n"));
return E_FAIL;
}
DIDEVICEIMAGEINFOW &info = lpInfoBase[index];
DWORD dwOffset = index;
// add view info to array
CDeviceView *pView = ui.NewView();
if (!pView)
{
etrace(_T("Could not create new view.\n"));
return E_FAIL;
}
int nView = pView->GetViewIndex();
tracescope(ts2, _T("Adding View "));
trace2(_T("%d (info index %u)\n"), nView, index);
// set view's imagepath
if (!info.tszImagePath)
{
etrace(_T("No image path.\n"));
return E_FAIL;
}
LPTSTR tszImagePath = AllocLPTSTR(info.tszImagePath);
if (!tszImagePath)
{
etrace(_T("Could not copy image path.\n"));
return E_FAIL;
}
// set the view's image path
pView->SetImagePath(tszImagePath);
// create bitmap from path
LPDIRECT3DSURFACE8 lpSurf3D = ui.m_uig.GetSurface3D();
CBitmap *pbm = CBitmap::CreateViaD3DX(tszImagePath, lpSurf3D);
traceSTR(info.tszImagePath);
traceHEXPTR(pbm);
traceDWORD(dwOffset);
free(tszImagePath);
tszImagePath = NULL;
if (lpSurf3D)
{
lpSurf3D->Release(); // Need to free the surface instance after we are done as AddRef() was called earlier.
lpSurf3D = NULL;
}
if (!pbm)
{
etrace(_T("Could not create image from path.\n"));
return E_FAIL;
}
// set the view's image
assert(pbm != NULL);
pView->SetImage(pbm); // setimage steals the bitmap pointer
assert(pbm == NULL);
// add conversion from offset to view
offset_view.add(dwOffset, nView);
}
}
}
{
tracescope(ts2, _T("Second Pass...\n"));
for (i = 0; i < dwNumElements; i++)
{
DWORD dwFlags = dih.lprgImageInfoArray[i].dwFlags;
if (dwFlags & DIDIFT_OVERLAY)
{
LPDIDEVICEIMAGEINFOW lpInfoBase = dih.lprgImageInfoArray;
DWORD index = i;
{
tracescope(ts1, _T("AddControlInfo()...\n"));
traceHEXPTR(lpInfoBase);
traceDWORD(index);
if (lpInfoBase == NULL)
{
etrace(_T("lpInfoBase NULL\n"));
return E_FAIL;
}
DIDEVICEIMAGEINFOW &info = lpInfoBase[index];
int nViewIndex = 0;
if (!offset_view.getright(info.dwViewID, nViewIndex))
{
etrace(_T("Could not get view index\n"));
return E_FAIL;
}
if (nViewIndex < 0 || nViewIndex >= ui.GetNumViews())
{
etrace1(_T("Invalid view index %d\n"), nViewIndex);
return E_FAIL;
}
CDeviceView *pView = ui.GetView(nViewIndex);
if (!pView)
{
etrace1(_T("\n"), nViewIndex);
return E_FAIL;
}
CDeviceControl *pControl = pView->NewControl();
if (!pControl)
{
etrace1(_T("\n"), nViewIndex);
return E_FAIL;
}
int nControl = pControl->GetControlIndex();
tracescope(ts2, _T("Adding Control "));
trace4(_T("%d (info index %u) to view %d (info index %u)\n"), nControl, index, nViewIndex, info.dwViewID);
traceDWORD(info.dwObjID);
traceDWORD(info.dwcValidPts);
traceRECT(info.rcCalloutRect);
traceRECT(info.rcOverlay);
traceHEX(info.dwTextAlign);
traceSTR(info.tszImagePath);
pControl->SetObjID(info.dwObjID);
pControl->SetLinePoints(int(info.dwcValidPts), info.rgptCalloutLine);
pControl->SetCalloutMaxRect(info.rcCalloutRect);
pControl->SetAlignment(info.dwTextAlign);
if (info.tszImagePath)
{
LPTSTR tszOverlayPath = AllocLPTSTR(info.tszImagePath);
if (tszOverlayPath)
pControl->SetOverlayPath(tszOverlayPath);
free(tszOverlayPath);
tszOverlayPath = NULL;
}
pControl->SetOverlayRect(info.rcOverlay);
pControl->Init();
}
}
}
}
return S_OK;
}
// Enumerates the controls on the device and creates one big list
// view for the device. Fails if it can't enumerate for some reason.
HRESULT PopulateListView(CDeviceUI &ui)
{
int i;
HRESULT hr = S_OK;
// we must have the device interface
if (!ui.m_lpDID)
return E_FAIL;
// create one view
CDeviceView *pView = ui.NewView();
if (!pView)
return E_FAIL;
// enable scrolling on it
pView->EnableScrolling();
// get list of controls
DIDEVOBJSTRUCT os;
hr = FillDIDeviceObjectStruct(os, ui.m_lpDID);
if (FAILED(hr))
return hr;
// if there aren't any, fail
int n = os.nObjects;
if (n < 1)
return E_FAIL;
HDC hDC = CreateCompatibleDC(NULL);
CPaintHelper ph(ui.m_uig, hDC);
ph.SetElement(UIE_DEVOBJ);
// Initially, max width is the width needed for the Control label.
TCHAR tszHeader[MAX_PATH];
RECT LabelRect = {0, 0, 0, 0};
LoadString(g_hModule, IDS_LISTHEADER_CTRL, tszHeader, MAX_PATH);
DrawText(hDC, tszHeader, -1, &LabelRect, DT_LEFT|DT_NOPREFIX|DT_CALCRECT);
// run through and create a text for every control to
// get the sizing
POINT origin = {0, 0};
SIZE max = {LabelRect.right - LabelRect.left, 0};
for (i = 0; i < n; i++)
{
LPTSTR tszName = AllocLPTSTR(os.pdoi[i].tszName);
CDeviceViewText *pText = pView->AddText(
(HFONT)ui.m_uig.GetFont(UIE_DEVOBJ),
ui.m_uig.GetTextColor(UIE_DEVOBJ),
ui.m_uig.GetBkColor(UIE_DEVOBJ),
origin,
tszName);
free(tszName);
if (!pText)
{
DeleteDC(hDC);
return E_FAIL;
}
SIZE tsize = GetRectSize(pText->GetRect());
if (tsize.cx > max.cx)
max.cx = tsize.cx;
if (tsize.cy > max.cy)
max.cy = tsize.cy;
}
// Find out if we should use one column or two columns if this is a kbd device.
BOOL bUseTwoColumns = FALSE;
if (LOBYTE(LOWORD(ui.m_didi.dwDevType)) == DI8DEVTYPE_KEYBOARD &&
((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1) - max.cx >= MINLISTVIEWCALLOUTWIDTH)
bUseTwoColumns = TRUE;
// Do two iterations here. First one we use two columns for keyboard. 2nd one is
// run only if the header labels are clipped. In which case a single column is used.
for (int iPass = 0; iPass < 2; ++iPass)
{
// calculate max callout height based on the two possible fonts
int cmaxh = 0,
ch = 2 + GetTextHeight((HFONT)ui.m_uig.GetFont(UIE_CALLOUT)),
chh = 2 + GetTextHeight((HFONT)ui.m_uig.GetFont(UIE_CALLOUTHIGH));
if (ch > cmaxh)
cmaxh = ch;
if (chh > cmaxh)
cmaxh = chh;
// calculate the bigger of text/callout
int h = 0;
if (cmaxh > h)
h = cmaxh;
if (max.cy > h)
h = max.cy;
// calculate vertical offsets of text/callout within max spacing
int to = (h - max.cy) / 2,
co = (h - cmaxh) / 2;
// max width for text is half of the view window
if (max.cx > ((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1))
max.cx = ((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1);
// go back through all the controls and place the text while
// creating the corresponding callouts
int at = 0; // Start at second row since first row is used for header. Also half row spacing
for (i = 0; i < n; i++)
{
// reposition the text
CDeviceViewText *pText = pView->GetText(i);
if (!pText)
{
DeleteDC(hDC);
return E_FAIL;
}
SIZE s = GetRectSize(pText->GetRect());
if (bUseTwoColumns)
{
int iXOffset = i & 1 ? ((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1) : 0;
RECT rect = {iXOffset,
at + to,
max.cx + iXOffset,
at + to + s.cy};
// Get the rectangle that is actually used.
RECT adjrect = rect;
if (hDC)
{
DrawText(hDC, pText->GetText(), -1, &adjrect, DT_NOPREFIX|DT_CALCRECT);
// If the rect actually used is smaller than the space available, use the smaller rect and align to right.
if (adjrect.right < rect.right)
rect.left += rect.right - adjrect.right;
}
pText->SetRect(rect);
}
else
{
RECT rect = {0, at + to, max.cx /*> ((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1) ?
((g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1) : max.cx*/, at + to + s.cy};
pText->SetRect(rect);
}
// create the control
CDeviceControl *pControl = pView->NewControl();
if (!pControl)
{
DeleteDC(hDC);
return E_FAIL;
}
// position it
RECT rect = {max.cx + 10, at, (g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1, at + h};
// If single column, extend callout all the way to right end of view window
if (!bUseTwoColumns)
rect.right = g_sizeImage.cx - DEFAULTVIEWSBWIDTH;
// If this is a keyboard, move to right column on odd numbered controls.
if (bUseTwoColumns && (i & 1))
{
rect.left += (g_sizeImage.cx - DEFAULTVIEWSBWIDTH) >> 1;
rect.right = g_sizeImage.cx - DEFAULTVIEWSBWIDTH;
}
pControl->SetCalloutMaxRect(rect);
// align it
pControl->SetAlignment(CAF_LEFT);
// set approp offset
pControl->SetObjID(os.pdoi[i].dwType);
// init it
pControl->Init();
// go to next y coord
// If this is a keyboard, then only increase y when we are moving to even numbered controls.
if (!bUseTwoColumns || (i & 1))
at += h;
}
// Compute the rectangles for header labels
if (pView->CalculateHeaderRect() && iPass == 0)
{
pView->RemoveAll();
bUseTwoColumns = FALSE; // Re-calculate the rects using single column.
}
else
break; // Break out from 2nd iteration
}
DeleteDC(hDC);
// make selection/thumb images (just for kicks)
pView->MakeMissingImages();
// calculate view dimensions (for scrolling)
pView->CalcDimensions();
return S_OK;
}
// Creates a single view with an error message. Should not fail.
HRESULT PopulateErrorView(CDeviceUI &ui)
{
// create the new view
CDeviceView *pView = ui.NewView();
if (!pView)
return E_FAIL;
// add text objects containing error message
pView->AddWrappedLineOfText(
(HFONT)ui.m_uig.GetFont(UIE_ERRORHEADER),
ui.m_uig.GetTextColor(UIE_ERRORHEADER),
ui.m_uig.GetBkColor(UIE_ERRORHEADER),
_T("Error!"));
pView->AddWrappedLineOfText(
(HFONT)ui.m_uig.GetFont(UIE_ERRORMESSAGE),
ui.m_uig.GetTextColor(UIE_ERRORMESSAGE),
ui.m_uig.GetBkColor(UIE_ERRORMESSAGE),
_T("Could not create views for device."));
pView->MakeMissingImages();
return S_OK;
}