windows-nt/Source/XPSP1/NT/enduser/netmeeting/ui/wb/clpbd.cpp
2020-09-26 16:20:57 +08:00

783 lines
16 KiB
C++

//
// CLPBD.CPP
// Clipboard Handling
//
// Copyright Microsoft 1998-
//
// PRECOMP
#include "precomp.h"
//
// NFC, SFR 5921. Maximum length of a string pasted from the clipboard.
// We impose this limit as our graphic object code cant
// handle more then this number of chars.
//
#define WB_MAX_TEXT_PASTE_LEN (INT_MAX-1)
//
//
// Function: Paste
//
// Purpose: Paste a format from the clipboard
//
//
BOOL WbMainWindow::CLP_Paste(void)
{
UINT length = 0;
HANDLE handle = NULL;
T126Obj* pGraphic = NULL;
BOOL bResult = FALSE;
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_Paste");
// Get the highest priority acceptable format in the clipboard
int iFormat = CLP_AcceptableClipboardFormat();
if (!iFormat)
goto NoOpenClip;
TRACE_MSG(("Found acceptable format %d", iFormat));
// Open the clipboard
if (!::OpenClipboard(m_hwnd))
{
WARNING_OUT(("CLP_Paste: can't open clipboard"));
goto NoOpenClip;
}
handle = ::GetClipboardData(iFormat);
if (!handle)
{
WARNING_OUT(("CLP_Paste: can't get data for format %d", iFormat));
goto NoFormatData;
}
switch (iFormat)
{
//
// Check the standard formats
//
case CF_DIB:
{
TRACE_MSG(("Pasting CF_DIB"));
// Lock the handle to get a pointer to the DIB
LPBITMAPINFOHEADER lpbi;
lpbi = (LPBITMAPINFOHEADER) ::GlobalLock(handle);
if (lpbi != NULL)
{
bResult= PasteDIB(lpbi);
// Release the memory
::GlobalUnlock(handle);
}
}
break;
//
// We have a metafile. Play it into a bitmap and then use the
// data.
//
case CF_ENHMETAFILE:
{
TRACE_MSG(("Pasting CF_ENHMETAFILE"));
HDC hDrawingDC;
ENHMETAHEADER meta_header;
HBITMAP hBitmap = NULL;
HDC meta_dc = NULL;
HBITMAP hSaveBitmap;
HPEN hSavePen;
HPALETTE hPalette;
RECT meta_rect;
LPBITMAPINFOHEADER lpbiNew;
int tmp;
// We just need a DC compatible with the drawing area wnd
hDrawingDC = m_drawingArea.GetCachedDC();
// make a dc
meta_dc = ::CreateCompatibleDC(hDrawingDC);
if (!meta_dc)
goto CleanupMetaFile;
// figure out image size.
::GetEnhMetaFileHeader( (HENHMETAFILE)handle,
sizeof( ENHMETAHEADER ),
&meta_header );
meta_rect.left = meta_rect.top = 0;
meta_rect.right = ((meta_header.rclFrame.right - meta_header.rclFrame.left)
* ::GetDeviceCaps(hDrawingDC, LOGPIXELSX ))/2540;
meta_rect.bottom = ((meta_header.rclFrame.bottom - meta_header.rclFrame.top)
* ::GetDeviceCaps(hDrawingDC, LOGPIXELSY ))/2540;
// Normalize coords
if (meta_rect.right < meta_rect.left)
{
tmp = meta_rect.left;
meta_rect.left = meta_rect.right;
meta_rect.right = tmp;
}
if (meta_rect.bottom < meta_rect.top)
{
tmp = meta_rect.top;
meta_rect.top = meta_rect.bottom;
meta_rect.bottom = tmp;
}
// make a place to play meta in
hBitmap = ::CreateCompatibleBitmap(hDrawingDC,
meta_rect.right - meta_rect.left,
meta_rect.bottom - meta_rect.top);
if (!hBitmap)
goto CleanupMetaFile;
hSaveBitmap = SelectBitmap(meta_dc, hBitmap);
// erase our paper
hSavePen = SelectPen(meta_dc, GetStockObject(NULL_PEN));
::Rectangle(meta_dc, meta_rect.left, meta_rect.top,
meta_rect.right + 1, meta_rect.bottom + 1);
SelectPen(meta_dc, hSavePen);
// play the tape
::PlayEnhMetaFile(meta_dc, (HENHMETAFILE)handle, &meta_rect);
// unplug our new bitmap
SelectBitmap(meta_dc, hSaveBitmap);
// Check for a palette object in the clipboard
hPalette = (HPALETTE)::GetClipboardData(CF_PALETTE);
// Create a new DIB from the bitmap
lpbiNew = DIB_FromBitmap(hBitmap, hPalette, FALSE, FALSE);
if(lpbiNew != NULL)
{
bResult= PasteDIB(lpbiNew);
}
CleanupMetaFile:
// Free our temp intermediate bitmap
if (hBitmap != NULL)
{
DeleteBitmap(hBitmap);
}
if (meta_dc != NULL)
{
::DeleteDC(meta_dc);
}
}
break;
case CF_TEXT:
{
LPSTR pData;
TRACE_DEBUG(("Pasting text"));
// Get a handle to the clipboard contents
pData = (LPSTR)::GlobalLock(handle);
if(pData)
{
// Create a text object to hold the data - get the font to
// use from the tool attributes group.
DBG_SAVE_FILE_LINE
WbTextEditor* pPasteText = new WbTextEditor();
// Use the current font attributes
if (!pPasteText)
{
ERROR_OUT(("CF_TEXT handling; failed to allocate DCWbGraphicText object"));
}
else
{
pPasteText->SetFont(m_pCurrentTool->GetFont());
pPasteText->SetText(pData);
RECT rcVis;
m_drawingArea.GetVisibleRect(&rcVis);
pPasteText->SetPenColor(RGB(0,0,0),TRUE);
pPasteText->SetAnchorPoint(0, 0);
pPasteText->MoveTo(rcVis.left, rcVis.top);
pPasteText->Draw();
pPasteText->m_pEditBox = NULL;
// Add the new grabbed bitmap
pPasteText->SetAllAttribs();
pPasteText->AddToWorkspace();
bResult = TRUE;
}
pGraphic = pPasteText;
}
}
break;
default:
{
if (iFormat == g_ClipboardFormats[CLIPBOARD_PRIVATE])
{
WB_OBJ objectHeader;
ULONG length;
UINT type;
ULONG nItems = 0;
PBYTE pClipBoardBuffer;
if (pClipBoardBuffer = (PBYTE) ::GlobalLock(handle))
{
//
// Count objects before we paste.
//
PBYTE pClipBuff = pClipBoardBuffer;
length = ((PWB_OBJ)pClipBuff)->length;
pClipBuff += sizeof(objectHeader);
while(length)
{
nItems++;
pClipBuff += length;
length = ((PWB_OBJ)pClipBuff)->length;
pClipBuff += sizeof(objectHeader);
}
TimeToGetGCCHandles(nItems);
length = ((PWB_OBJ)pClipBoardBuffer)->length;
type = ((PWB_OBJ)pClipBoardBuffer)->type;
pClipBoardBuffer += sizeof(objectHeader);
while(length)
{
if(type == TYPE_T126_ASN_OBJECT)
{
bResult = T126_MCSSendDataIndication(length, pClipBoardBuffer, g_MyMemberID, TRUE);
}
else if(type == TYPE_T126_DIB_OBJECT)
{
bResult = PasteDIB((LPBITMAPINFOHEADER)pClipBoardBuffer);
}
pClipBoardBuffer += length;
length = ((PWB_OBJ)pClipBoardBuffer)->length;
type = ((PWB_OBJ)pClipBoardBuffer)->type;
pClipBoardBuffer += sizeof(objectHeader);
}
// Release the handle
::GlobalUnlock(handle);
}
}
}
break;
}
NoFormatData:
::CloseClipboard();
NoOpenClip:
return bResult;
}
//
//
// Function: Copy
//
// Purpose: Copy a graphic to the clipboard.
//
//
BOOL WbMainWindow::CLP_Copy()
{
BOOL bResult = FALSE;
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_Copy");
//
// We act according to the format of the selected graphic.
//
// For all formats we supply the Whiteboard private format (which is
// just a copy of the flat representation of the graphic).
//
// We supply standard formats as follows.
//
// For bitmaps and all others we supply CF_DIB.
//
// For text graphics we supply CF_TEXT.
//
TRACE_MSG(("Rendering the graphic now"));
// Have to empty the clipboard before rendering the formats.
if (::OpenClipboard(m_hwnd))
{
// Get ownership of the clipboard
::EmptyClipboard();
::CloseClipboard();
// Render the graphic
bResult = CLP_RenderAllFormats();
}
return bResult;
}
//
//
// Function: RenderAllFormats
//
// Purpose: Render a graphic to the clipboard
//
//
BOOL WbMainWindow::CLP_RenderAllFormats()
{
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_RenderAllFormats");
BOOL bResult = FALSE;
// Open the clipboard
if (bResult = ::OpenClipboard(m_hwnd))
{
TRACE_DEBUG(("Rendering all formats of graphic"));
// Render the private format
bResult &= CLP_RenderPrivateFormat();
// Text graphic
bResult &= CLP_RenderAsText();
// DIBs
// bResult &= CLP_RenderAsImage();
// Bitmaps
bResult &= CLP_RenderAsBitmap();
// Close the clipboard
::CloseClipboard();
}
return bResult;
}
//
//
// Function: CLP_RenderPrivateFormat
//
// Purpose: Render the private format of a graphic to the clipboard.
// The clipboard should be open before this call is made.
//
//
BOOL WbMainWindow::CLP_RenderPrivateFormat()
{
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_RenderPrivateFormat");
BOOL bResult = FALSE;
LPBYTE pDest = NULL;
HGLOBAL hMem = NULL;
HGLOBAL hRealloc = NULL;
WB_OBJ objectHeader;
ULONG length = sizeof(objectHeader);
BOOL bDoASN1CleanUp = FALSE;
ULONG previousLength = 0;
WBPOSITION pos;
T126Obj * pObj;
ASN1_BUF encodedPDU;
pos = g_pCurrentWorkspace->GetHeadPosition();
while(pos)
{
pObj = g_pCurrentWorkspace->GetNextObject(pos);
if(pObj && pObj->WasSelectedLocally())
{
//
// Get the encoded buffer
//
pObj->SetAllAttribs();
pObj->SetViewState(unselected_chosen);
pObj->GetEncodedCreatePDU(&encodedPDU);
objectHeader.length = encodedPDU.length;
if(pObj->GetType() == bitmapCreatePDU_chosen)
{
objectHeader.type = TYPE_T126_DIB_OBJECT;
}
else if(pObj->GetType() == drawingCreatePDU_chosen || pObj->GetType() == siNonStandardPDU_chosen)
{
objectHeader.type = TYPE_T126_ASN_OBJECT;
bDoASN1CleanUp = TRUE;
}
length += encodedPDU.length + sizeof(objectHeader);
if(pDest)
{
hRealloc = ::GlobalReAlloc(hMem, length, GMEM_MOVEABLE | GMEM_DDESHARE);
if(!hRealloc)
{
goto bail;
}
hMem = hRealloc;
}
else
{
// Allocate memory for the clipboard data
hMem = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE, length);
if(hMem == NULL)
{
goto bail;
}
}
//
// Get a pointer to the destination
//
pDest = (LPBYTE)::GlobalLock(hMem);
//
// Write the header
//
memcpy(pDest + previousLength, &objectHeader, sizeof(objectHeader));
previousLength += sizeof(objectHeader);
//
// Copy the decoded data in the destination
//
memcpy(pDest + previousLength, encodedPDU.value, encodedPDU.length);
previousLength += encodedPDU.length;
//
// Terminate the block with a 0
//
objectHeader.length = 0;
memcpy(pDest + previousLength, &objectHeader, sizeof(objectHeader));
//
// Free the encoded data
//
if(bDoASN1CleanUp)
{
g_pCoder->Free(encodedPDU);
bDoASN1CleanUp = FALSE;
}
}
}
// Release the memory
::GlobalUnlock(hMem);
// Pass the data to the clipboard
if (::SetClipboardData(g_ClipboardFormats[CLIPBOARD_PRIVATE], hMem))
{
TRACE_DEBUG(("Rendered data in Whiteboard format"));
bResult = TRUE;
}
bail:
if(bDoASN1CleanUp)
{
g_pCoder->Free(encodedPDU);
}
// If we failed to put the data into the clipboard, free the memory.
// (If we did put it into the clipboard we must not free it).
if (bResult == FALSE)
{
WARNING_OUT(("Render failed"));
::GlobalFree(hMem);
}
return bResult;
}
//
//
// Function: RenderAsText
//
// Purpose: Render the text format of a graphic to the clipboard.
// The clipboard should be open before this call is made.
// This member should only be called for text graphics.
//
//
BOOL WbMainWindow::CLP_RenderAsText()
{
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_RenderAsText");
BOOL bResult = TRUE;
WBPOSITION pos;
T126Obj * pObj;
pos = g_pCurrentWorkspace->GetHeadPosition();
while(pos)
{
pObj = g_pCurrentWorkspace->GetNextObject(pos);
if(pObj && pObj->WasSelectedLocally() && pObj->GraphicTool() == TOOLTYPE_TEXT)
{
// Get the total length of the clipboard format of the text
StrArray& strText = ((TextObj*) pObj)->strTextArray;
int iCount = strText.GetSize();
int iIndex;
DWORD dwLength = 0;
for (iIndex = 0; iIndex < iCount; iIndex++)
{
// Length of string plus 2 for carriage return and line feed
dwLength += lstrlen(strText[iIndex]) + 2;
}
// One more for the terminating NULL
dwLength += 1;
// Allocate memory for the clipboard data
HANDLE hMem = ::GlobalAlloc(GHND, dwLength);
if (hMem != NULL)
{
// Get a pointer to the memory
LPSTR pDest = (LPSTR) ::GlobalLock(hMem);
if (pDest != NULL)
{
// Write the graphic data to the allocated memory
for (iIndex = 0; iIndex < iCount; iIndex++)
{
_tcscpy(pDest, strText[iIndex]);
pDest += lstrlen(strText[iIndex]);
// Add the carriage return and line feed
*pDest++ = '\r';
*pDest++ = '\n';
}
// Add the final NULL
*pDest = '\0';
// Release the memory
::GlobalUnlock(hMem);
// Pass the data to the clipboard
if (::SetClipboardData(CF_TEXT, hMem))
{
TRACE_DEBUG(("Rendered data in text format"));
}
else
{
bResult = FALSE;
}
}
// If we failed to put the data into the clipboard, free the memory
if (bResult == FALSE)
{
::GlobalFree(hMem);
}
break; // JOSEF what about copying all the text objects in the clipboard
}
}
}
return bResult;
}
//
// CLP_RenderAsBitmap()
//
// This draws all other graphics into a bitmap and pastes the DIB contents
// onto the clipboard.
//
BOOL WbMainWindow::CLP_RenderAsBitmap()
{
BOOL bResult = FALSE;
HDC hdcDisplay = NULL;
HDC hdcMem = NULL;
HBITMAP hBitmap = NULL;
HBITMAP hOldBitmap = NULL;
HPALETTE hPalette;
RECT rcBounds = g_pDraw->m_selectorRect;
POINT pt;
LPBITMAPINFOHEADER lpbi;
T126Obj * pObj = NULL;
MLZ_EntryOut(ZONE_FUNCTION, "WbMainWindow::CLP_RenderAsBitmap");
//
// First, draw this into a bitmap
// Second, get the DIB bits of the bitmap
//
hdcDisplay = ::CreateDC("DISPLAY", NULL, NULL, NULL);
if (!hdcDisplay)
{
ERROR_OUT(("Can't create DISPLAY dc"));
goto AsBitmapDone;
}
hdcMem = ::CreateCompatibleDC(hdcDisplay);
if (!hdcMem)
{
ERROR_OUT(("Can't create DISPLAY compatible dc"));
goto AsBitmapDone;
}
hBitmap = ::CreateCompatibleBitmap(hdcDisplay,
(rcBounds.right - rcBounds.left), (rcBounds.bottom - rcBounds.top));
if (!hBitmap)
{
ERROR_OUT(("Can't create compatible bitmap"));
goto AsBitmapDone;
}
hOldBitmap = SelectBitmap(hdcMem, hBitmap);
if (!hOldBitmap)
{
ERROR_OUT(("Failed to select compatible bitmap"));
goto AsBitmapDone;
}
::SetMapMode(hdcMem, MM_ANISOTROPIC);
::SetWindowOrgEx(hdcMem, rcBounds.left,rcBounds.top, NULL);
// Clear out bitmap with white background -- now that origin has been
// altered, we can use drawing area coors.
::PatBlt(hdcMem, rcBounds.left, rcBounds.top, rcBounds.right - rcBounds.left,
rcBounds.bottom - rcBounds.top, WHITENESS);
WBPOSITION pos;
pos = g_pCurrentWorkspace->GetHeadPosition();
while(pos)
{
pObj = g_pCurrentWorkspace->GetNextObject(pos);
if(pObj && pObj->WasSelectedLocally())
{
pObj->Draw(hdcMem);
}
}
SelectBitmap(hdcMem, hOldBitmap);
// Now get the dib bits...
hPalette = CreateSystemPalette();
lpbi = DIB_FromBitmap(hBitmap, hPalette, TRUE, FALSE);
if (hPalette != NULL)
::DeletePalette(hPalette);
// And put the handle on the clipboard
if (lpbi != NULL)
{
if (::SetClipboardData(CF_DIB, (HGLOBAL)lpbi))
{
bResult = TRUE;
}
else
{
::GlobalFree((HGLOBAL)lpbi);
}
}
AsBitmapDone:
if (hBitmap != NULL)
::DeleteBitmap(hBitmap);
if (hdcMem != NULL)
::DeleteDC(hdcMem);
if (hdcDisplay != NULL)
::DeleteDC(hdcDisplay);
return(bResult);
}
//
//
// Function: AcceptableClipboardFormat
//
// Purpose: Return highest priority clipboard format if an acceptable
// one is available, else return NULL.
//
//
int WbMainWindow::CLP_AcceptableClipboardFormat(void)
{
// Look for any of the supported formats being available
int iFormat = ::GetPriorityClipboardFormat((UINT *)g_ClipboardFormats, CLIPBOARD_ACCEPTABLE_FORMATS);
if (iFormat == -1)
{
iFormat = 0;
}
return iFormat;
}
BOOL WbMainWindow::PasteDIB( LPBITMAPINFOHEADER lpbi)
{
BOOL bResult = FALSE;
//
// Create a bitmap object
//
BitmapObj* pDIB = NULL;
DBG_SAVE_FILE_LINE
pDIB = new BitmapObj(TOOLTYPE_FILLEDBOX);
pDIB->SetBitmapSize(lpbi->biWidth,lpbi->biHeight);
RECT rect;
// Calculate the bounding rectangle from the size of the bitmap
rect.top = 0;
rect.left = 0;
rect.right = lpbi->biWidth;
rect.bottom = lpbi->biHeight;
pDIB->SetRect(&rect);
pDIB->SetAnchorPoint(rect.left, rect.top);
//
// Make a copy of the clipboard data
//
pDIB->m_lpbiImage = DIB_Copy(lpbi);
if(pDIB->m_lpbiImage!= NULL)
{
// Add the new bitmap
AddCapturedImage(pDIB);
bResult = TRUE;
}
else
{
delete pDIB;
}
return bResult;
}