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/*
Basic History plugin
Copyright (C) 2011-2012 Krzysztof Kral
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//code taken partly from public example on the internet, source unknown.
#include "StdAfx.h"
#include "ImageDataObject.h"
HBITMAP CacheIconToBMP(HICON hIcon, COLORREF backgroundColor, int sizeX, int sizeY)
{
RECT rc;
HBRUSH hBkgBrush = CreateSolidBrush(backgroundColor);
rc.top = rc.left = 0;
rc.right = sizeY;
rc.bottom = sizeX;
HDC hdc = GetDC(nullptr);
HBITMAP hBmp = CreateCompatibleBitmap(hdc, sizeY, sizeX);
HDC hdcMem = CreateCompatibleDC(hdc);
HBITMAP hoBmp = (HBITMAP)SelectObject(hdcMem, hBmp);
FillRect(hdcMem, &rc, hBkgBrush);
DrawIconEx(hdcMem, 0, 0, hIcon, sizeY, sizeX, 0, nullptr, DI_NORMAL);
SelectObject(hdcMem, hoBmp);
DeleteDC(hdcMem);
ReleaseDC(nullptr, hdc);
DeleteObject(hBkgBrush);
return hBmp;
}
// returns true on success, false on failure
bool ImageDataObject::InsertIcon(IRichEditOle* pRichEditOle, HICON hIcon,
COLORREF backgroundColor, int sizeX, int sizeY)
{
bool result;
HBITMAP hBmp = CacheIconToBMP(hIcon, backgroundColor, sizeX, sizeY);
result = InsertBitmap(pRichEditOle, hBmp);
DeleteObject(hBmp);
return result;
}
// returns true on success, false on failure
bool ImageDataObject::InsertBitmap(IRichEditOle* pRichEditOle, HBITMAP hBitmap)
{
BITMAP bminfo;
// Get the image data object
//
ImageDataObject *pods = new ImageDataObject;
GetObject(hBitmap, sizeof(bminfo), &bminfo);
pods->SetBitmap(hBitmap);
// Get the RichEdit container site
//
IOleClientSite *pOleClientSite;
pRichEditOle->GetClientSite(&pOleClientSite);
// Initialize a Storage Object
//
LPLOCKBYTES lpLockBytes = nullptr;
SCODE sc = ::CreateILockBytesOnHGlobal(nullptr, TRUE, &lpLockBytes);
if (sc != S_OK) {
pOleClientSite->Release();
return false;
}
IStorage *pStorage;
sc = ::StgCreateDocfileOnILockBytes(lpLockBytes, STGM_SHARE_EXCLUSIVE | STGM_CREATE | STGM_READWRITE, 0, &pStorage);
if (sc != S_OK) {
lpLockBytes = nullptr;
pOleClientSite->Release();
return false;
}
// The final ole object which will be inserted in the richedit control
//
IOleObject *pOleObject;
pOleObject = pods->GetOleObject(pOleClientSite, pStorage);
if (pOleObject == nullptr) {
pStorage->Release();
pOleClientSite->Release();
return false;
}
// all items are "contained" -- this makes our reference to this object
// weak -- which is needed for links to embedding silent update.
OleSetContainedObject(pOleObject, TRUE);
// Now Add the object to the RichEdit
//
REOBJECT reobject;
memset(&reobject, 0, sizeof(REOBJECT));
reobject.cbStruct = sizeof(REOBJECT);
CLSID clsid;
sc = pOleObject->GetUserClassID(&clsid);
if (sc != S_OK) {
pOleObject->Release();
pStorage->Release();
pOleClientSite->Release();
return false;
}
reobject.clsid = clsid;
reobject.cp = REO_CP_SELECTION;
reobject.dvaspect = DVASPECT_CONTENT;
reobject.poleobj = pOleObject;
reobject.polesite = pOleClientSite;
reobject.pstg = pStorage;
reobject.dwFlags = bminfo.bmHeight <= 12 ? 0 : REO_BELOWBASELINE;
// Insert the bitmap at the current location in the richedit control
//
sc = pRichEditOle->InsertObject(&reobject);
// Release all unnecessary interfaces
//
pOleObject->Release();
pOleClientSite->Release();
lpLockBytes->Release();
pStorage->Release();
return sc == S_OK;
}
void ImageDataObject::SetBitmap(HBITMAP hBitmap)
{
STGMEDIUM stgm;
stgm.tymed = TYMED_GDI; // Storage medium = HBITMAP handle
stgm.hBitmap = hBitmap;
stgm.pUnkForRelease = nullptr; // Use ReleaseStgMedium
FORMATETC fm;
fm.cfFormat = CF_BITMAP; // Clipboard format = CF_BITMAP
fm.ptd = nullptr; // Target Device = Screen
fm.dwAspect = DVASPECT_CONTENT; // Level of detail = Full content
fm.lindex = -1; // Index = Not applicaple
fm.tymed = TYMED_GDI; // Storage medium = HBITMAP handle
this->SetData(&fm, &stgm, TRUE);
}
IOleObject *ImageDataObject::GetOleObject(IOleClientSite *pOleClientSite, IStorage *pStorage)
{
IOleObject *pOleObject;
SCODE sc = ::OleCreateStaticFromData(this, IID_IOleObject, OLERENDER_FORMAT, &m_format, pOleClientSite, pStorage, (void **)& pOleObject);
if (sc != S_OK)
pOleObject = nullptr;
return pOleObject;
}
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