float
EDFBFont::StringWidth(const char *string, float size, float spacing, float shear, bool bold, eint32 length) const
{
if(fEngine == NULL) return 0;
if((int)size <= 0 || string == NULL || *string == 0 || length == 0 || !IsAttached()) return 0;
EAutolock <EDFBGraphicsEngine> autolock(fEngine);
if(autolock.IsLocked() == false || fEngine->InitCheck() != E_OK) return 0;
int height = 0;
fDFBFont->GetHeight(fDFBFont, &height);
if(size != (float)height) return 0;
float width = 0;
if(length < 0 || (size_t)length > strlen(string)) length = (eint32)strlen(string);
float delta = (float)ceil((double)(spacing * size));
euint8 bytes = 0;
const char *str = e_utf8_at(string, 0, &bytes);
const char *tmp = str;
while(!(tmp == NULL || bytes == 0 || (size_t)(tmp - string) > (size_t)length - (size_t)bytes))
{
EString aStr(tmp, (eint32)bytes);
int bWidth = -1;
fDFBFont->GetStringWidth(fDFBFont, aStr.String(), aStr.Length(), &bWidth);
width += (float)(bWidth > 0 ? bWidth : height) + (tmp == str ? 0.f : delta);
tmp = e_utf8_next(tmp, &bytes);
}
return width;
}
LOCAL void
dfb_drawtext(DFBDISPLAY *mod, struct TVRequest *req)
{
DFBWINDOW *v = req->tvr_Op.Text.Window;
TSTRPTR text = req->tvr_Op.Text.Text;
TINT len = req->tvr_Op.Text.Length;
TUINT x = req->tvr_Op.Text.X;
TUINT y = req->tvr_Op.Text.Y;
TINT w;
/*TINT h = ((struct FontNode *) v->curfont)->height;*/
struct DFBPen *fgpen = (struct DFBPen *) req->tvr_Op.Text.FgPen;
TINT ascent = ((struct FontNode *) v->curfont)->ascent;
IDirectFBFont *f = ((struct FontNode *) v->curfont)->font;
f->GetStringWidth(f, text, len, &w);
setfgpen(mod, v, (TVPEN) fgpen);
v->winsurface->DrawString(v->winsurface, text, len, x, y + ascent,
DSTF_LEFT);
}
ERect
EDFBFont::RenderString(EHandler *_view, const char *string, float size, float spacing, float shear, bool bold, eint32 length)
{
if(fEngine == NULL || (int)size <= 0 || string == NULL || *string == 0 || length == 0) return ERect();
EView *view = e_cast_as(_view, EView);
if(view == NULL || view->Window() == NULL || view->IsPrinting()) return ERect();
ERegion viewClipping;
view->GetClippingRegion(&viewClipping);
if(viewClipping.CountRects() <= 0) return ERect();
EAutolock <EDFBGraphicsEngine> autolock(fEngine);
if(autolock.IsLocked() == false || fEngine->InitCheck() != E_OK) return ERect();
EDFBGraphicsDrawable *pix = e_cast_as(EGraphicsEngine::GetPixmap(view->Window()), EDFBGraphicsDrawable);
EGraphicsContext *dc = EGraphicsEngine::GetContext(view);
if(pix == NULL || pix->dfbSurface == NULL || dc == NULL) return ERect();
if(!IsAttached()) return ERect();
int height = 0, ascent = 0, descent = 0;
fDFBFont->GetHeight(fDFBFont, &height);
fDFBFont->GetAscender(fDFBFont, &ascent);
fDFBFont->GetDescender(fDFBFont, &descent);
if(size != (float)height) return ERect();
float width = 0;
if(length < 0 || (size_t)length > strlen(string)) length = (eint32)strlen(string);
float delta = (float)ceil((double)(spacing * size));
EPoint pt = view->ConvertToWindow(view->PenLocation());
pt.y -= (float)(ascent + 1);
e_rgb_color c = dc->HighColor();
pix->dfbSurface->SetColor(pix->dfbSurface, c.red, c.green, c.blue, 255);
pix->dfbSurface->SetDrawingFlags(pix->dfbSurface, DSDRAW_NOFX);
pix->dfbSurface->SetFont(pix->dfbSurface, fDFBFont);
euint8 bytes = 0;
const char *str = e_utf8_at(string, 0, &bytes);
const char *tmp = str;
while(!(tmp == NULL || bytes == 0 || (size_t)(tmp - string) > (size_t)length - (size_t)bytes))
{
EString aStr(tmp, (eint32)bytes);
int bWidth = -1;
fDFBFont->GetStringWidth(fDFBFont, aStr.String(), aStr.Length(), &bWidth);
for(eint32 i = 0; i < dc->Clipping()->CountRects(); i++)
{
ERect rect = dc->Clipping()->RectAt(i).FloorCopy();
DFBRegion clipping;
clipping.x1 = (int)rect.left;
clipping.y1 = (int)rect.top;
clipping.x2 = (int)rect.right;
clipping.y2 = (int)rect.bottom;
pix->dfbSurface->SetClip(pix->dfbSurface, &clipping);
if(bWidth > 0)
pix->dfbSurface->DrawString(pix->dfbSurface, aStr.String(), aStr.Length(),
(int)pt.x, (int)pt.y, (DFBSurfaceTextFlags)(DSTF_LEFT | DSTF_TOP));
// else
// pix->dfbSurface->FillRectangle(pix->dfbSurface, (int)pt.x + 3, (int)pt.y + 3, height - 6, height - 6);
}
pt.x += (float)(bWidth > 0 ? bWidth : height) + delta;
width += (float)(bWidth > 0 ? bWidth : height) + (tmp == str ? 0.f : delta);
tmp = e_utf8_next(tmp, &bytes);
}
pix->dfbSurface->SetFont(pix->dfbSurface, NULL);
ERect updateRect;
updateRect.left = pt.x;
updateRect.right = pt.x + width;
updateRect.top = pt.y;
updateRect.bottom = updateRect.top + (float)height;
view->ConvertFromWindow(&updateRect);
updateRect &= viewClipping.Frame();
return updateRect;
}