bool AP_UnixApp::makePngPreview(const char * pszInFile, const char * pszPNGFile, UT_sint32 iWidth, UT_sint32 iHeight)
{
cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, iWidth, iHeight);
cairo_t *cr = cairo_create (surface);
GR_UnixCairoAllocInfo ai(NULL, false);
GR_CairoGraphics * pG = static_cast<GR_CairoGraphics*>(GR_UnixCairoGraphics::graphicsAllocator(ai));
pG->setCairo(cr);
pG->beginPaint(); // needed to avoid cairo reference loss
UT_Error error = UT_OK;
PD_Document * pNewDoc = new PD_Document();
error = pNewDoc->readFromFile(pszInFile,IEFT_Unknown, NULL);
if (error != UT_OK)
{
return false;
}
AP_Preview_Abi * pPrevAbi = new AP_Preview_Abi(pG,iWidth,iHeight,NULL, PREVIEW_ZOOMED,pNewDoc);
dg_DrawArgs da;
memset(&da, 0, sizeof(da));
da.pG = pG;
GR_Painter * pPaint = new GR_Painter(pG);
pPaint->clearArea(0,0,pG->tlu(iWidth),pG->tlu(iHeight));
pPrevAbi->getView()->draw(0, &da);
pG->endPaint();
cairo_destroy(cr);
DELETEP(pPaint);
cairo_surface_write_to_png(surface, pszPNGFile);
cairo_surface_destroy(surface);
DELETEP(pG);
DELETEP(pPrevAbi); // This deletes pNewDoc
return true;
}
void GOComponentView::render(UT_Rect & rec)
{
UT_return_if_fail (component);
if (rec.width == 0 || rec.height == 0) // Nothing to render
return;
GR_CairoGraphics *pUGG = static_cast<GR_CairoGraphics*>(m_pGOMan->getGraphics());
UT_sint32 myWidth = pUGG->tdu(rec.width);
UT_sint32 myHeight = pUGG->tdu(rec.height);
UT_sint32 x = pUGG->tdu(rec.left), y;
if ((width != rec.width || ascent + descent != rec.height) && go_component_is_resizable (component))
{
double _ascent, _descent;
go_component_set_size (component, (double) rec.width / UT_LAYOUT_RESOLUTION, (double) rec.height / UT_LAYOUT_RESOLUTION);
g_object_get (G_OBJECT (component), "ascent", &_ascent, "descent", &_descent, NULL);
ascent = (UT_sint32) rint (_ascent * UT_LAYOUT_RESOLUTION);
descent = (UT_sint32) rint (_descent * UT_LAYOUT_RESOLUTION);
}
y = pUGG->tdu(rec.top - ascent);
pUGG->beginPaint();
cairo_t *cr = pUGG->getCairo ();
cairo_save (cr);
cairo_translate (cr, x, y);
go_component_render (component, cr, myWidth, myHeight);
cairo_new_path (cr); // just in case a path has not been ended
cairo_restore (cr);
pUGG->endPaint();
}