void WPdfImage::setChanged(WFlags<PainterChangeFlag> flags)
{
if (!flags.empty()) {
HPDF_Page_GRestore(page_);
HPDF_Page_GSave(page_);
HPDF_ExtGState gstate;
gstate = HPDF_CreateExtGState (pdf_);
currentFont_ = WFont();
if (painter()->hasClipping()) {
const WTransform& t = painter()->clipPathTransform();
if (!painter()->clipPath().isEmpty()) {
applyTransform(t);
drawPlainPath(painter()->clipPath());
HPDF_Page_Clip(page_);
HPDF_Page_EndPath(page_);
applyTransform(t.inverted());
}
}
applyTransform(painter()->combinedTransform());
const WPen& pen = painter()->pen();
if (pen.style() != PenStyle::None) {
const WColor& color = pen.color();
HPDF_Page_SetRGBStroke(page_,
color.red() / 255.,
color.green() / 255.,
color.blue() / 255.);
HPDF_ExtGState_SetAlphaStroke (gstate, color.alpha()/255.);
WLength w = painter()->normalizedPenWidth(pen.width(), false);
HPDF_Page_SetLineWidth(page_, w.toPixels());
switch (pen.capStyle()) {
case PenCapStyle::Flat:
HPDF_Page_SetLineCap(page_, HPDF_BUTT_END);
break;
case PenCapStyle::Square:
HPDF_Page_SetLineCap(page_, HPDF_PROJECTING_SCUARE_END); // scuary !
break;
case PenCapStyle::Round:
HPDF_Page_SetLineCap(page_, HPDF_ROUND_END);
break;
}
switch (pen.joinStyle()) {
case PenJoinStyle::Miter:
HPDF_Page_SetLineJoin(page_, HPDF_MITER_JOIN);
break;
case PenJoinStyle::Bevel:
HPDF_Page_SetLineJoin(page_, HPDF_BEVEL_JOIN);
break;
case PenJoinStyle::Round:
HPDF_Page_SetLineJoin(page_, HPDF_ROUND_JOIN);
break;
}
switch (pen.style()) {
case PenStyle::None:
break;
case PenStyle::SolidLine:
HPDF_Page_SetDash(page_, nullptr, 0, 0);
break;
case PenStyle::DashLine: {
const HPDF_UINT16 dash_ptn[] = { 4, 2 };
HPDF_Page_SetDash(page_, dash_ptn, 2, 0);
break;
}
case PenStyle::DotLine: {
const HPDF_UINT16 dash_ptn[] = { 1, 2 };
HPDF_Page_SetDash(page_, dash_ptn, 2, 0);
break;
}
case PenStyle::DashDotLine: {
const HPDF_UINT16 dash_ptn[] = { 4, 2, 1, 2 };
HPDF_Page_SetDash(page_, dash_ptn, 4, 0);
break;
}
case PenStyle::DashDotDotLine: {
const HPDF_UINT16 dash_ptn[] = { 4, 2, 1, 2, 1, 2 };
HPDF_Page_SetDash(page_, dash_ptn, 6, 0);
break;
}
}
}
const WBrush& brush = painter()->brush();
if (brush.style() != BrushStyle::None) {
const WColor& color = painter()->brush().color();
HPDF_Page_SetRGBFill(page_,
color.red() / 255.,
color.green() / 255.,
color.blue() / 255.);
HPDF_ExtGState_SetAlphaFill (gstate, color.alpha()/255.);
}
HPDF_Page_SetExtGState (page_, gstate);
const WFont& font = painter()->font();
if (font == currentFont_ && !trueTypeFonts_->busy())
return;
/*
* First, try a true type font.
*/
std::string ttfFont;
if (trueTypeFonts_->busy()) {
/*
* We have a resolved true type font.
*/
ttfFont = trueTypeFonts_->drawingFontPath();
} else {
FontSupport::FontMatch match = trueTypeFonts_->matchFont(font);
if (match.matched())
ttfFont = match.fileName();
}
LOG_DEBUG("font: " << ttfFont);
if (font == currentFont_ &&
!ttfFont.empty() &&
currentTtfFont_ == ttfFont)
return;
currentFont_ = font;
const char *font_name = nullptr;
font_ = nullptr;
if (!ttfFont.empty()) {
bool fontOk = false;
std::map<std::string, const char *>::const_iterator i
= ttfFonts_.find(ttfFont);
if (i != ttfFonts_.end()) {
font_name = i->second;
fontOk = true;
} else if (ttfFont.length() > 4) {
std::string suffix
= Utils::lowerCase(ttfFont.substr(ttfFont.length() - 4));
if (suffix == ".ttf") {
font_name = HPDF_LoadTTFontFromFile (pdf_, ttfFont.c_str(),
HPDF_TRUE);
} else if (suffix == ".ttc") {
/* Oops, pango didn't tell us which font to load ... */
font_name = HPDF_LoadTTFontFromFile2(pdf_, ttfFont.c_str(),
0, HPDF_TRUE);
}
if (!font_name)
HPDF_ResetError (pdf_);
else {
ttfFonts_[ttfFont] = font_name;
fontOk = true;
}
}
if (!fontOk)
LOG_ERROR("cannot read font: '" << ttfFont << "': "
"expecting a true type font (.ttf, .ttc)");
}
if (!font_ && font_name) {
font_ = HPDF_GetFont (pdf_, font_name, "UTF-8");
if (!font_)
HPDF_ResetError (pdf_);
else {
trueTypeFont_ = true;
currentTtfFont_ = ttfFont;
}
}
if (!font_) {
trueTypeFont_ = false;
currentTtfFont_.clear();
std::string name = Pdf::toBase14Font(font);
font_ = HPDF_GetFont(pdf_, name.c_str(), nullptr);
}
fontSize_ = font.sizeLength(12).toPixels();
HPDF_Page_SetFontAndSize (page_, font_, fontSize_);
}
}
int
main (int argc, char **argv)
{
HPDF_Doc pdf;
HPDF_Page page;
char fname[256];
HPDF_Font hfont;
HPDF_ExtGState gstate;
const HPDF_REAL PAGE_WIDTH = 600;
const HPDF_REAL PAGE_HEIGHT = 900;
strcpy (fname, argv[0]);
strcat (fname, ".pdf");
pdf = HPDF_New (error_handler, NULL);
if (!pdf) {
printf ("error: cannot create PdfDoc object\n");
return 1;
}
if (setjmp(env)) {
HPDF_Free (pdf);
return 1;
}
hfont = HPDF_GetFont (pdf, "Helvetica-Bold", NULL);
/* add a new page object. */
page = HPDF_AddPage (pdf);
HPDF_Page_SetFontAndSize (page, hfont, 10);
HPDF_Page_SetHeight (page, PAGE_HEIGHT);
HPDF_Page_SetWidth (page, PAGE_WIDTH);
/* normal */
HPDF_Page_GSave (page);
draw_circles (page, "normal", 40.0f, PAGE_HEIGHT - 170);
HPDF_Page_GRestore (page);
/* transparency (0.8) */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetAlphaFill (gstate, 0.8);
HPDF_ExtGState_SetAlphaStroke (gstate, 0.8);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "alpha fill = 0.8", 230.0f, PAGE_HEIGHT - 170);
HPDF_Page_GRestore (page);
/* transparency (0.4) */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetAlphaFill (gstate, 0.4);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "alpha fill = 0.4", 420.0f, PAGE_HEIGHT - 170);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_MULTIPLY */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_MULTIPLY);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_MULTIPLY", 40.0f, PAGE_HEIGHT - 340);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_SCREEN */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_SCREEN);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_SCREEN", 230.0f, PAGE_HEIGHT - 340);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_OVERLAY */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_OVERLAY);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_OVERLAY", 420.0f, PAGE_HEIGHT - 340);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_DARKEN */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_DARKEN);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_DARKEN", 40.0f, PAGE_HEIGHT - 510);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_LIGHTEN */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_LIGHTEN);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_LIGHTEN", 230.0f, PAGE_HEIGHT - 510);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_COLOR_DODGE */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_COLOR_DODGE);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_COLOR_DODGE", 420.0f, PAGE_HEIGHT - 510);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_COLOR_BUM */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_COLOR_BUM);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_COLOR_BUM", 40.0f, PAGE_HEIGHT - 680);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_HARD_LIGHT */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_HARD_LIGHT);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_HARD_LIGHT", 230.0f, PAGE_HEIGHT - 680);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_SOFT_LIGHT */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_SOFT_LIGHT);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_SOFT_LIGHT", 420.0f, PAGE_HEIGHT - 680);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_DIFFERENCE */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_DIFFERENCE);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_DIFFERENCE", 40.0f, PAGE_HEIGHT - 850);
HPDF_Page_GRestore (page);
/* blend-mode=HPDF_BM_EXCLUSHON */
HPDF_Page_GSave (page);
gstate = HPDF_CreateExtGState (pdf);
HPDF_ExtGState_SetBlendMode (gstate, HPDF_BM_EXCLUSHON);
HPDF_Page_SetExtGState (page, gstate);
draw_circles (page, "HPDF_BM_EXCLUSHON", 230.0f, PAGE_HEIGHT - 850);
HPDF_Page_GRestore (page);
/* save the document to a file */
HPDF_SaveToFile (pdf, fname);
/* clean up */
HPDF_Free (pdf);
return 0;
}
