/** get the complex path made from the internal complex region
@remarks
only for D2D impl because we can only clip with geometry paths
& not directly with GDI region
return NULL if region is a simple region (ie equal to region bounds)
*/
VGraphicPath *VRegion::GetComplexPath() const
{
HRGN hrgn = (RgnRef)(*this);
Gdiplus::Region region( hrgn);
Gdiplus::Matrix matIdentity;
UINT numRect = region.GetRegionScansCount(&matIdentity);
if (numRect > 1)
{
VGraphicPath *path = new VGraphicPath();
if (!path)
return NULL;
Gdiplus::Rect rects[8];
Gdiplus::Rect *pRect = rects;
if (numRect > 8)
pRect = new Gdiplus::Rect[numRect];
Gdiplus::Status status = region.GetRegionScans(&matIdentity, pRect, (INT *)&numRect);
if (status == Gdiplus::Ok)
{
path->Begin();
Gdiplus::Rect *curRect = pRect;
for (int i = 0; i < numRect; i++, curRect++)
{
if (i == 0)
path->AddRect( VRect( curRect->GetLeft(), curRect->GetTop(), curRect->GetRight()-curRect->GetLeft(), curRect->GetBottom()-curRect->GetTop()));
else
{
VGraphicPath pathRect;
pathRect.Begin();
pathRect.AddRect( VRect( curRect->GetLeft(), curRect->GetTop(), curRect->GetRight()-curRect->GetLeft(), curRect->GetBottom()-curRect->GetTop()));
pathRect.End();
path->Union( pathRect);
}
}
path->End();
}
else
{
delete path;
path = NULL;
}
if (numRect > 8)
delete [] pRect;
return path;
}
else
return NULL;
}
bool TextOutlineStrategy::MeasureString(
Gdiplus::Graphics* pGraphics,
Gdiplus::FontFamily* pFontFamily,
Gdiplus::FontStyle fontStyle,
int nfontSize,
const wchar_t*pszText,
Gdiplus::Rect rtDraw,
Gdiplus::StringFormat* pStrFormat,
float* pfDestWidth,
float* pfDestHeight )
{
using namespace Gdiplus;
GraphicsPath path;
Status status = path.AddString(pszText,wcslen(pszText),pFontFamily,fontStyle,nfontSize,rtDraw,pStrFormat);
if(status!=Ok)
return false;
*pfDestWidth= rtDraw.GetLeft();
*pfDestHeight= rtDraw.GetTop();
bool b = GDIPath::MeasureGraphicsPath(pGraphics, &path, pfDestWidth, pfDestHeight);
if(false==b)
return false;
float pixelThick = 0.0f;
b = GDIPath::ConvertToPixels(pGraphics,m_nThickness,0.0f,&pixelThick,NULL);
if(false==b)
return false;
*pfDestWidth += pixelThick;
*pfDestHeight += pixelThick;
return true;
}
bool TextNoOutlineStrategy::MeasureString(
Gdiplus::Graphics* pGraphics,
Gdiplus::FontFamily* pFontFamily,
Gdiplus::FontStyle fontStyle,
int nfontSize,
const wchar_t*pszText,
Gdiplus::Rect rtDraw,
Gdiplus::StringFormat* pStrFormat,
float* pfPixelsStartX,
float* pfPixelsStartY,
float* pfDestWidth,
float* pfDestHeight )
{
using namespace Gdiplus;
GraphicsPath path;
Status status = path.AddString(pszText,wcslen(pszText),pFontFamily,fontStyle,nfontSize,rtDraw,pStrFormat);
if(status!=Ok)
return false;
*pfDestWidth= rtDraw.GetLeft();
*pfDestHeight= rtDraw.GetTop();
bool b = GDIPath::MeasureGraphicsPath(pGraphics, &path, pfPixelsStartX, pfPixelsStartY, pfDestWidth, pfDestHeight);
return b;
}
void PrintRichEdit(HWND hwnd, Gdiplus::Graphics* graphics, Gdiplus::Bitmap* background, Gdiplus::Rect layoutArea) {
using namespace Gdiplus;
//Calculate the area to render.
HDC hdc1 = ::GetDC(hwnd);
double anInchX = 1440 / GetDeviceCaps(hdc1, LOGPIXELSX);
double anInchY = 1440 / GetDeviceCaps(hdc1, LOGPIXELSY);
ReleaseDC(hwnd,hdc1);
//double anInch = 1440.0 / GetDeviceCaps(hdc1, LOGPIXELSX);
RECT rectLayoutArea;
rectLayoutArea.top = (int)(layoutArea.GetTop() * anInchY);
rectLayoutArea.bottom = (int)(layoutArea.GetBottom() * anInchY);
rectLayoutArea.left = (int)(layoutArea.GetLeft() *anInchX );
rectLayoutArea.right = (int)(layoutArea.GetRight() * anInchX);
HDC hdc = graphics->GetHDC();
Gdiplus::Graphics gr2(hdc);
SolidBrush br(Color(255,255,255));
// We need to draw background on new HDC, otherwise the text will look ugly
Status st = gr2.DrawImage(background,layoutArea.GetLeft(),layoutArea.GetTop(),layoutArea.GetLeft(), layoutArea.GetTop(), layoutArea.Width, layoutArea.Height,Gdiplus::UnitPixel/*gr2.GetPageUnit()*/);
FORMATRANGE fmtRange;
fmtRange.chrg.cpMax = -1; //Indicate character from to character to
fmtRange.chrg.cpMin = 0;
fmtRange.hdc = hdc; //Use the same DC for measuring and rendering
fmtRange.hdcTarget = hdc; //Point at printer hDC
fmtRange.rc = rectLayoutArea; //Indicate the area on page to print
fmtRange.rcPage = rectLayoutArea; //Indicate size of page
int characterCount = ::SendMessage(hwnd, EM_FORMATRANGE, 1, (LPARAM)&fmtRange);
//Release the device context handle obtained by a previous call
graphics->ReleaseHDC(hdc);
}
void VPictureData_GDIPlus_Vector::_InitSize()const
{
if(fMetafile)
{
Gdiplus::Rect rect;
Gdiplus::MetafileHeader gh;
fMetafile->GetMetafileHeader(&gh);
//sLONG width = (short) ( ( (long) gh.EmfHeader.rclFrame.right * 96L ) / 2540L );
//sLONG height = (short) ( ( (long) gh.EmfHeader.rclFrame.bottom * 96L ) / 2540L );
/*re1.Width= gh.EmfHeader.rclFrame.right * gh.EmfHeader.szlDevice.cx / (gh.EmfHeader.szlMillimeters.cx*100);
re1.Height= gh.EmfHeader.rclFrame.bottom * gh.EmfHeader.szlDevice.cy / (gh.EmfHeader.szlMillimeters.cy*100);
re1.Width=re1.Width * (96.0/gh.GetDpiX());
re1.Height=re1.Height * (96.0/gh.GetDpiY());*/
gh.GetBounds(&rect);
fBounds.SetCoords(rect.GetLeft(),rect.GetTop(),rect.GetRight()-rect.GetLeft(),rect.GetBottom()-rect.GetTop());
}
}
bool TextNoOutlineStrategy::GdiMeasureStringRealHeight(
Gdiplus::Graphics* pGraphics,
LOGFONTW* pLogFont,
const wchar_t*pszText,
Gdiplus::Rect rtDraw,
float* pfPixelsStartX,
float* pfPixelsStartY,
float* pfDestWidth,
float* pfDestHeight )
{
using namespace Gdiplus;
Gdiplus::GraphicsPath* pPath=NULL;
bool b = GDIPath::GetStringPath(
pGraphics,
&pPath,
pszText,
pLogFont,
rtDraw);
if(false==b)
{
if(pPath)
{
delete pPath;
pPath = NULL;
}
return false;
}
*pfDestWidth= rtDraw.GetLeft();
*pfDestHeight= rtDraw.GetTop();
b = GDIPath::MeasureGraphicsPathRealHeight(pGraphics, pPath, pfPixelsStartX, pfPixelsStartY, pfDestWidth, pfDestHeight);
if(pPath)
{
delete pPath;
pPath = NULL;
}
return b;
}
HRESULT Action(
const P* pts,
size_t count,
const Gdiplus::Rect& clip,
ScanConvertCallback callback,
INT_PTR hint)
{
if(count <= 0) return E_INVALIDARG;
if(pts == NULL) return E_INVALIDARG;
if(callback == NULL) return E_INVALIDARG;
n = (INT) count;
pt = pts;
/// initialize index array as natrual order
std::vector<INT> idx(n);
active.resize(n);
for(INT i = 0; i < n; i ++)
{
idx[i] = i;
}
/// Sort idx by the order of pt[idx[k]].Y
std::sort(&idx[0], &idx[0] + n, CompareIndex(pt));
nact = 0; /// number of active edges, init as empty
INT k = 0; /// idx[k] is the next vertex to precess
INT y0 = max(clip.GetTop(), xtl::FloorCast<INT>(pt[idx[0]].Y)); /// the topmost scanline
INT y1 = min(clip.GetBottom(), xtl::CeilCast<INT>(pt[idx[n-1]].Y)); /// the bottom scanline
/// step through scanlines
/// scanline y is at y+.5 in continuous coordinates
for(INT y = y0; y < y1; y ++)
{
/// check vertices between previous scanline and current one, if any
for (; (k < n) && (pt[idx[k]].Y <= y); k++)
{
/// to simplify, if pt.y = y+.5, pretend it's above
/// invariant: y-.5 < pt[i].y <= y+.5
INT i = idx[k];
/// insert or delete edges before and after vertex i
/// (i-1 to i, and i to i+1) from active list if they cross scanline y
INT j = i > 0 ? i-1 : n-1; /// vertex previous to i
if (pt[j].Y <= y) /// old edge, remove from active list
{
DeleteActiveEdge(j);
}
else if (pt[j].Y > y) /// new edge, add to active list
{
InsertActiveEdge(j, y);
}
j = i < (n - 1) ? i+1 : 0; /// vertex next after i
if (pt[j].Y <= y) /// old edge, remove from active list
{
DeleteActiveEdge(i);
}
else if (pt[j].Y > y) /// new edge, add to active list
{
InsertActiveEdge(i, y);
}
}
/// sort active edge list by active[j].x
std::sort(&active[0], &active[0] + nact, CompareEdge());
/// draw horizontal segments for scanline y
for (INT j=0; j < nact; j += 2) /// draw horizontal segments
{
/// span 'tween j & j+1 is inside, span tween j+1 & j+2 is outside
INT xl = xtl::CeilCast<INT>(active[j].x); /// left end of span
if (xl < clip.GetLeft()) xl = clip.GetLeft();
if (xl > clip.GetRight()) xl = clip.GetRight();
INT xr = xtl::CeilCast<INT>(active[j+1].x); /// right end of span
if (xr < clip.GetLeft()) xr = clip.GetLeft();
if (xr > clip.GetRight()) xr = clip.GetRight();
if (xl < xr)
{
/// Invoke call back in span
if(!callback(y, xl, xr, hint))
{
/// if call back returns false
/// return prematurely
return S_OK;
}
}
active[j].x += active[j].dx; /// increment edge coords
active[j+1].x += active[j+1].dx;
}
}
return S_OK;
}
bool TextOutlineStrategy::GdiMeasureStringRealHeight(
Gdiplus::Graphics* pGraphics,
LOGFONTW* pLogFont,
const wchar_t*pszText,
Gdiplus::Rect rtDraw,
float* pfDestWidth,
float* pfDestHeight )
{
using namespace Gdiplus;
Gdiplus::GraphicsPath* pPath=NULL;
bool b = GDIPath::GetStringPath(
pGraphics,
&pPath,
pszText,
pLogFont,
rtDraw);
if(false==b)
{
if(pPath)
{
delete pPath;
pPath = NULL;
}
return false;
}
*pfDestWidth= rtDraw.GetLeft();
*pfDestHeight= rtDraw.GetTop();
b = GDIPath::MeasureGraphicsPathRealHeight(pGraphics, pPath, pfDestWidth, pfDestHeight);
if(false==b)
{
if(pPath)
{
delete pPath;
pPath = NULL;
}
return false;
}
float pixelThick = 0.0f;
b = GDIPath::ConvertToPixels(pGraphics,m_nThickness,0.0f,&pixelThick,NULL);
if(false==b)
{
if(pPath)
{
delete pPath;
pPath = NULL;
}
return false;
}
*pfDestWidth += pixelThick;
*pfDestHeight += pixelThick;
if(pPath)
{
delete pPath;
pPath = NULL;
}
return true;
}