/********************************************************************************************
> virtual BOOL ConcurrentRenderer::Initialise(
GRenderRegion* pActiveRR,
double ResFactor,
DocRect AreaOfDocumentToRender,
UINT32 bpp,
BOOL NeedsTransp
)
Author: Ilan_Copelyn (Xara Group Ltd) <*****@*****.**>
Created: 5/06/2000
Purpose:
SeeAlso:
********************************************************************************************/
BOOL ConcurrentRenderer::Initialise(
GRenderRegion* pActiveRR,
double ResFactor,
DocRect AreaOfDocumentToRender,
UINT32 bpp,
BOOL NeedsTransp
)
{
// if we have no source render-region, then we need to manufacture a rendering matrix
// for ourself.
// to generate our render-matrix, we use the current view and spread, together with
// a user-specified dpi value.
Matrix SourceMat;
if (pActiveRR == NULL)
{
View* pView = View::GetCurrent();
if (pView == NULL)
return FALSE;
double PixelsPerInch = pView->GetConvertToEditableShapesDPI();
Spread* pSpread = Document::GetSelectedSpread();
if (pSpread == NULL)
return FALSE;
FIXED16 ViewPixelWidth = pView->GetScaledPixelWidth();
const double AppPixelWidth = MILLIPOINTS_PER_INCH / (double)PixelsPerInch;
double ViewScaleFactor = ViewPixelWidth.MakeDouble() / AppPixelWidth;
SourceMat = pView->ConstructScaledRenderingMatrix(pSpread, ViewScaleFactor);
}
// we have a source render-region, so get its matrix and scale up ResFactor
// so that our offscreen RR would effectively have the same scaled pixel width
// as its source render-region (not taking into account the original value of ResFactor).
else
{
SourceMat = pActiveRR->GetMatrix();
const double ActualPixelWidth = (double)pActiveRR->GetPixelWidth();
const double DefPixelWidth = MILLIPOINTS_PER_INCH / (double)GRenderRegion::GetDefaultDPI();
ResFactor *= DefPixelWidth / ActualPixelWidth;
}
// m_pView = pActiveRR->GetRenderView();
// m_pView = View::GetCurrent();
// if (m_pView)
// {
// TRACEUSER( "Gerry", _T("Forcing default context\n"));
// m_bOldForce = m_pView->SetForceDefaultColourContexts();
// }
m_pNewGD = new GDrawAsm;
if (m_pNewGD && m_pNewGD->Init())
{
// Save current device context
m_pOldGD = GRenderRegion::SetTempDrawContext(m_pNewGD);
// m_pOldGD = GRenderRegion::GetStaticDrawContext();
// GRenderRegion::GD = pGDAsm;
}
// Setup a new GRenderDIB (NB also initialises memory).
m_pNewRR = CreateGRenderDIB(ResFactor, AreaOfDocumentToRender, bpp, NeedsTransp, &SourceMat);
if (m_pNewRR != NULL)
{
return TRUE;
}
// If we get here then we have failed so clean up and return false
delete m_pNewGD;
m_pNewGD = NULL;
GRenderRegion::SetTempDrawContext(m_pOldGD);
m_pOldGD = NULL;
return FALSE;
}
/********************************************************************************************
> static GRenderDIB* QuickRenderer::CreateGRenderDIB(
double ResFactor,
DocRect AreaOfDocumentToRender,
UINT32 bpp,
BOOL NeedsTransp,
Matrix* pSourceMat)
Author: Ilan_Copelyn (Xara Group Ltd) <*****@*****.**>
Created: 5/06/2000
Purpose: Create and start a GRenderDIB ready for rendering
SeeAlso:
Errors: Returns NULL if unable to alloc mem for bitmaps in StartRender()
********************************************************************************************/
GRenderDIB* QuickRenderer::CreateGRenderDIB(
double ResFactor,
DocRect AreaOfDocumentToRender,
UINT32 bpp,
BOOL NeedsTransp,
Matrix* pSourceMat)
{
/////////////////////////////////////////////////////////////////////////////////////////////
// Setup a new GRenderDIB
/////////////////////////////////////////////////////////////////////////////////////////////
GRenderDIB* pNewGRR=NULL;
BOOL DoWantBMPSmoothing = FALSE;
BOOL ok;
// Setup new GRenderDIB based on current Screen resolution and ResFactor multiplier
View* pView = View::GetCurrent();
// get the top spread
Spread* pSpread = Document::GetSelectedSpread();
// if we've been passed a source matrix, then we'll scale it up by ResFactor and use that.
// DEBUG:
// Note that we currently check whether the view is for printing, solely so that this code
// can live on the net without breaking printing of shadows more than it already is.
Matrix Mat;
if (pSourceMat != NULL)
{
FIXED16 Scale;
DocCoord dcTrans;
pSourceMat->Decompose(&Scale, NULL, NULL, NULL, &dcTrans);
// Karim 04/09/2000
// BODGE, to cope with printing reflected images.
// If the given matrix contains a reflection, then its determinant < 0.
// If this is so, then we'll scale the matrix by -1, which corrects the output.
if (pSourceMat->Det() < 0.0)
Scale *= FIXED16(-1);
Mat = Matrix(Scale * FIXED16(ResFactor), Scale * FIXED16(ResFactor));
Mat.SetTranslation(dcTrans);
// Mat *= *pSourceMat;
}
// otherwise, we'll use the view's settings, scaled up by ResFactor.
else
{
Mat = pView->ConstructScaledRenderingMatrix(pSpread, ResFactor);
}
// get the scale factor out of the matrix.
FIXED16 Scale;
Mat.Decompose(&Scale);
// double dpi = Scale.MakeDouble() * PIXELS_PER_INCH;
double dpi = 0.0; // use screen dpi (ie PIXELS_PER_INCH)
// Create a new GRenderDIB region
pNewGRR = new GRenderDIB(AreaOfDocumentToRender, Mat, Scale, bpp, dpi);
ERROR2IF(pNewGRR == NULL,FALSE,"Failed to create a GRenderDIB!");
// Ensure bmp mem is not allocated from limited memory
NewWrappedRRCreated((GRenderRegion*) pNewGRR);
// State flags + pixel width calculations
if(!pNewGRR->AttachDevice(pView, NULL, pSpread)) // view and spread from previous RR rather than Current - nb in create bitmap copy case
{
ERROR3("Cannot attach devices");
delete pNewGRR;
pNewGRR = NULL;
return NULL;
}
pNewGRR->m_DoCompression = NeedsTransp;
ok = pNewGRR->InitDevice();
if (!ok)
{
delete pNewGRR;
pNewGRR = NULL;
return NULL;
}
pNewGRR->InitAttributes();
pNewGRR->RRQuality.SetQuality(QUALITY_MAX);
pNewGRR->SetQualityLevel();
pNewGRR->SetLineAttributes();
pNewGRR->SetFillAttributes();
// NB following call gets GRendRegion to create the bitmap into which GDraw will render
BOOL Started = pNewGRR->StartRender();
// Karim 06/07/2000
// I'm commenting these pre-processor directives out, to fix a bug with the new shadowing
// code, where shadows at anything other than 100% zoom are incorrectly scaled. This is a
// BODGE, and this code should be revisited at a later date.
//#ifdef _DEBUG
// Set DIB dpi indicators correctly - so they are correct if adding to bitmap gallery (not required)
double PixPerMetre = PIXELS_PER_INCH * INCHES_PER_METRE;
PixPerMetre *= Scale.MakeDouble();
LPBITMAPINFO bi;
LPBYTE by;
GetBitmapPointers(pNewGRR,&bi,&by);
if(bi)
{
bi->bmiHeader.biXPelsPerMeter = (INT32) (PixPerMetre + 0.5);
bi->bmiHeader.biYPelsPerMeter = (INT32) (PixPerMetre + 0.5);
}
//#endif
if(Started)
{
pNewGRR->SaveContext();
if(DoWantBMPSmoothing)
{
(pNewGRR->GetDrawContext())->SetTileSmoothingFlag(TRUE);
}
return pNewGRR;
}
else
{
// ENSURE(FALSE,"StartRender failed to alloc bmp for GDraw to render into.");
delete pNewGRR;
return NULL;
}
}
