PdfDraw now supports color emoji, Fix in Gtk DrawText, refactored font height adjustment in replacement fonts

uppsrc/CtrlCore/GtkDrawText.cpp

@@ -38,15 +38,15 @@ void FontSysData::Init(Font font, int angle)
 
 	cairo_matrix_init_scale(font_matrix, fh, fh);
 
-	if(font.IsItalic() && !(FTFace(font)->style_flags & FT_STYLE_FLAG_ITALIC)) {
-		cairo_matrix_t sheer[1];
-		cairo_matrix_init_identity(sheer);
-		sheer->xy = -0.2;
-		cairo_matrix_multiply(font_matrix, font_matrix, sheer);
-	}
-	
 	if(angle)
-		cairo_matrix_rotate(font_matrix, -angle * M_2PI / 3600);
+		cairo_matrix_rotate(font_matrix, -angle * M_PI / 1800);
+
+	if(font.IsItalic() && !(FTFace(font)->style_flags & FT_STYLE_FLAG_ITALIC)) { // Synthetic italic
+		cairo_matrix_t shear[1];
+		cairo_matrix_init_identity(shear);
+		shear->xy = -0.165;
+		cairo_matrix_multiply(font_matrix, shear, font_matrix);
+	}
 
 	cairo_font_options_t *opt = cairo_font_options_create();
 	scaled_font = cairo_scaled_font_create(font_face, font_matrix, ctm, opt);

uppsrc/Draw/FontCR.cpp

@@ -426,15 +426,22 @@ bool Replace(Font fnt, int chr, Font& rfnt)
 			f.Face(fi);
 			if(IsNormal_nc(f, chr)) {
 				int a = fnt.GetAscent();
+				int d = fnt.GetDescent();
 				static WString apple_kbd = "⌘⌃⇧⌥"; // do not make these smaller it looks ugly...
-				if(f.GetAscent() > a && apple_kbd.Find(chr) < 0) {
+				LLOG("Original font: " << fnt << " " << fnt.GetAscent() << " " << f.GetDescent() <<
+				     ", replacement " << f << " " << f.GetAscent() << " " << f.GetDescent());
+				if((f.GetAscent() > a || f.GetDescent() > d) && apple_kbd.Find(chr) < 0) {
 					static sFontMetricsReplacement cache[256];
 					int q = CombineHash(fnt, f) & 255;
 					if(cache[q].src != fnt || cache[q].dst != f) {
 						cache[q].src = fnt;
 						cache[q].dst = f;
-						while(f.GetAscent() > a && f.GetHeight() > 1) {
-							f.Height(max(1, f.GetHeight() - max(1, f.GetHeight() / 20)));
+						double h = f.GetHeight();
+						f.Height(min(h * a / max(1, f.GetAscent()), h * d / max(1, f.GetDescent())) + 1);
+						while((f.GetAscent() > a || f.GetDescent() > d) && f.GetHeight() > 1) {
+							f.Height(max(1, f.GetHeight() - 1/*max(1, f.GetHeight() / 20)*/));
+							LLOG("Original font: " << fnt << " " << fnt.GetAscent() << " " << f.GetDescent() <<
+							     ", downsized " << f << " " << f.GetAscent() << " " << f.GetDescent());
 						}
 						cache[q].mdst = f;
 					}

uppsrc/Draw/FontFc.cpp

@@ -155,9 +155,9 @@ CommonFontInfo GetFontInfoSys(Font font)
 		else
 			*fi.path = 0;
 		
-		if(font.GetFaceInfo() & Font::COLORIMG) {
+		if(font.GetFaceInfo() & Font::COLORIMG) { // Experimental estimate for cairo results
 			fi.colorimg_cy = fi.ascent + fi.descent;
-			int h = font.GetHeight();
+			int h = 4 * font.GetHeight() / 3;
 			fi.ascent = h * fi.ascent / fi.colorimg_cy;
 			fi.descent = h - fi.ascent;
 		}

uppsrc/Painter/Painter.h

@@ -41,6 +41,7 @@ struct Xform2D {
 	static Xform2D Scale(double scale);
 	static Xform2D Rotation(double fi);
 	static Xform2D Sheer(double fi);
+	static Xform2D SheerX(double fi);
 	static Xform2D Map(Pointf s1, Pointf s2, Pointf s3); // maps 0,0 -> s3, 1,0 -> s1, 0,1 -> s2
 	static Xform2D Map(Pointf s1, Pointf s2, Pointf s3, Pointf t1, Pointf t2, Pointf t3);
 	

uppsrc/Painter/Xform2D.cpp

@@ -90,11 +90,17 @@ Xform2D Xform2D::Rotation(double fi)
 Xform2D Xform2D::Sheer(double fi)
 {
 	Xform2D m;
-	m.x.x = m.y.y = 1;
 	m.x.y = atan(fi);
 	return m;
 }
 
+Xform2D Xform2D::SheerX(double fi)
+{
+	Xform2D m;
+	m.y.x = atan(fi);
+	return m;
+}
+
 Xform2D Xform2D::Identity()
 {
 	Xform2D m;

uppsrc/PdfDraw/PdfDraw.cpp

@@ -296,7 +296,7 @@ PdfDraw::OutlineInfo PdfDraw::GetOutlineInfo(Font fnt)
 	of.sitalic = of.standard_ttf = false;
 
 	TTFReader ttf;
-	if(ttf.Open(fnt, false, true)) {
+	if((fnt.GetFaceInfo() & Font::COLORIMG) == 0 && ttf.Open(fnt, false, true)) {
 		of.standard_ttf = true;
 		of.sitalic = fnt.IsItalic() && (ttf.head.macStyle & 2) == 0;
 		of.sbold = fnt.IsBold() && (ttf.head.macStyle & 1) == 0;
@@ -310,70 +310,134 @@ PdfDraw::OutlineInfo PdfDraw::GetOutlineInfo(Font fnt)
 
 enum { FONTHEIGHT_TTF = -9999 };
 
+Image RenderGlyph(int cx, int x, Font font, int chr, int py, int pcy, Color fg, Color bg);
+
+PdfDraw::CGlyph PdfDraw::ColorGlyph(Font fnt, int chr)
+{
+	auto key = MakeTuple(fnt, chr);
+	int q = color_glyph.Find(key);
+	if(q >= 0)
+		return color_glyph[q];
+
+	CGlyph cg;
+	cg.sz = { fnt[chr], fnt.GetCy() };
+	cg.x = 0;
+	int l = fnt.GetLeftSpace(chr);
+	if(l < 0) {
+		cg.x = -l;
+		cg.sz.cx -= l;
+	}
+	int r = fnt.GetRightSpace(chr);
+	if(r < 0)
+		cg.sz.cx -= r;
+
+	Image m[2];
+	for(int i = 0; i < 2; i++)
+		m[i] = RenderGlyph(cg.sz.cx, cg.x, fnt, chr, 0, cg.sz.cy, Blue(), i ? Black() : White());
+	Image cm = RecreateAlpha(m[0], m[1]);
+	cg.image = PdfImage(cm, cm.GetSize());
+	color_glyph.Add(key, cg);
+	return cg;
+}
+
 void PdfDraw::DrawTextOp(int x, int y, int angle, const wchar *s, Font fnt,
 		                 Color ink, int n, const int *dx)
 {
-	LLOG("DrawTextOp " << x << ", " << y << "angle: " << angle << ", text: " << s << ", font " << fnt);
+	LLOG("DrawTextOp " << x << ", " << y << " angle: " << angle << ", text: " << s << ", font " << fnt);
 	if(!n) return;
-	int h = fnt.GetHeight();
-	if(h == 0)
-		fnt.Height(100);
-	if(h < 0)
-		fnt.Height(-h);
-	Font ff = fnt;
-	int fh = fnt.GetHeight();
-	OutlineInfo of = GetOutlineInfo(fnt);
-	if(of.standard_ttf)
-		fnt.Height(FONTHEIGHT_TTF);
-	String txt;
-	PutrgColor(ink);
-	PutRGColor(ink);
 	double sina = 0, cosa = 1;
 	if(angle)
 		Draw::SinCos(angle, sina, cosa);
-	int nbld = 0;
-	int sbld = 1;
-	if(of.sbold) {
-		nbld = abs(ff.GetHeight()) / 30;
-		sbld = min(5, nbld);
-	}
 	int posx = 0;
-	for(int q = 0; q <= nbld; q += sbld) {
-		page << "BT ";
-		posx = q;
-		M22 m;
-		if(of.sitalic)
-			m.c = 0.165;
-		if(angle)
-			m.Mul(cosa, sina, -sina, cosa);
+	bool straight = true;
+	OutlineInfo of = GetOutlineInfo(fnt);
+	Xform2D m;
+	if(of.sitalic) {
+		m = m.SheerX(0.165);
+		straight = false;
+	}
+	if(angle) {
+		straight = false;
+		m = Xform2D::Rotation(-angle * M_PI / 1800.0) * m;
+	}
+
+	auto Fmt = [](double x) { return FormatF(x, 5); };
+
+	if(fnt.GetFaceInfo() & Font::COLORIMG) {
 		int fi = -1;
-		bool straight = (fabs(m.a - 1) <= 1e-8 && fabs(m.b) <= 1e-8 && fabs(m.c) <= 1e-8 && fabs(m.d - 1) <= 1e-8);
 		Pointf prev(0, 0);
 		for(int i = 0; i < n; i++) {
-			Pointf next(Pt(x + posx * cosa + fround(ff.GetAscent() * sina)),
-			            Pt(pgsz.cy - (y - posx * sina) - fround(ff.GetAscent() * cosa)));
-			CharPos fp = GetCharPos(fnt, s[i]);
-			if(fi != fp.fi) {
-				fi = fp.fi;
-				PutFontHeight(fi, fh);
-			}
+			CGlyph cg = ColorGlyph(fnt, s[i]);
+			page << "q ";
 			if(straight)
-				page << (next.x - prev.x) << ' ' << (next.y - prev.y) << " Td";
-			else
-				page << m.a << ' ' << m.b << ' ' << m.c << ' ' << m.d << ' ' << next.x << ' ' << next.y << " Tm";
-			page << " <" << FormatIntHex(fp.ci, 2);
-			page << "> Tj\n";
-			posx += dx ? dx[i] : ff[s[i]];
-			prev = next;
-		}
-		page << "ET\n";
+				page << Ptf(cg.sz.cx) << " 0 0 " << Ptf(cg.sz.cy) << ' '
+			         << Ptf(x + posx + cg.x) << ' ' << Ptf(pgsz.cy - y - cg.sz.cy);
+			else {
+				Xform2D mm = m * Xform2D::Scale(Pt(cg.sz.cx), Pt(cg.sz.cy));
+				page << Fmt(mm.x.x) << ' ' << Fmt(mm.x.y) << ' ' << Fmt(mm.y.x) << ' ' << Fmt(mm.y.y)
+				     << ' ' << Ptf(x + posx * cosa + cg.sz.cx * sina)
+				     << ' ' << Ptf(pgsz.cy - (y - posx * sina) - cg.sz.cy * cosa);
+			}
+			page << " cm /Image" << cg.image + 1 << " Do Q\n";
 
-		if(q == 0 && url.GetCount()) { // For now, only 'zero angle' text can have links
+			posx += dx ? dx[i] : fnt[s[i]];
+		}
+		if(url.GetCount()) { // For now, only 'zero angle' text can have links
 			UrlInfo& u = page_url.At(offset.GetCount()).Add();
-			u.rect = RectC(x, y, posx, ff.GetCy()).Offseted(current_offset);
+			u.rect = RectC(x, y, posx, fnt.GetCy()).Offseted(current_offset);
 			u.url = url;
 		}
 	}
+	else {
+		int h = fnt.GetHeight();
+		if(h == 0)
+			fnt.Height(100);
+		if(h < 0)
+			fnt.Height(-h);
+		Font ff = fnt;
+		int fh = fnt.GetHeight();
+		if(of.standard_ttf)
+			fnt.Height(FONTHEIGHT_TTF);
+		String txt;
+		PutrgColor(ink);
+		PutRGColor(ink);
+		int nbld = 0;
+		int sbld = 1;
+		if(of.sbold) {
+			nbld = abs(ff.GetHeight()) / 30;
+			sbld = clamp(nbld, 1, 5);
+		}
+		for(int q = 0; q <= nbld; q += sbld) {
+			page << "BT ";
+			posx = q;
+			int fi = -1;
+			Pointf prev(0, 0);
+			for(int i = 0; i < n; i++) {
+				Pointf next(Pt(x + posx * cosa + ff.GetAscent() * sina),
+				            Pt(pgsz.cy - (y - posx * sina) - ff.GetAscent() * cosa));
+				CharPos fp = GetCharPos(fnt, s[i]);
+				if(fi != fp.fi) {
+					fi = fp.fi;
+					PutFontHeight(fi, fh);
+				}
+				if(straight)
+					page << Fmt(next.x - prev.x) << ' ' << Fmt(next.y - prev.y) << " Td";
+				else
+					page << Fmt(m.x.x) << ' ' << Fmt(m.x.y) << ' ' << Fmt(m.y.x) << ' ' << Fmt(m.y.y)
+					     << ' ' << Fmt(next.x) << ' ' << Fmt(next.y) << " Tm";
+				page << " <" << FormatIntHex(fp.ci, 2);
+				page << "> Tj\n";
+				posx += dx ? dx[i] : ff[s[i]];
+				prev = next;
+				if(q == 0 && url.GetCount()) { // For now, only 'zero angle' text can have links
+					UrlInfo& u = page_url.At(offset.GetCount()).Add();
+					u.rect = RectC(x, y, posx, ff.GetCy()).Offseted(current_offset);
+					u.url = url;
+				}
+			}
+			page << "ET\n";
+		}
+	}
 }
 
 void PdfDraw::Escape(const String& data)
@@ -384,8 +448,6 @@ void PdfDraw::Escape(const String& data)
 		this->data = data.Mid(5);
 }
 
-Image RenderGlyph(int cx, int x, Font font, int chr, int py, int pcy, Color fg, Color bg);
-
 PdfDraw::RGlyph PdfDraw::RasterGlyph(Font fnt, int chr)
 {
 	RGlyph rg;
@@ -842,8 +904,7 @@ String PdfDraw::Finish(const PdfSignatureInfo *sign)
 			int fa = fnt.GetCy() - fnt.GetInternal();
 			for(int i = 0; i < cs.GetCount(); i++)
 				out << ' ' << 1000 * fnt[cs[i]] / fa;
-			out <<
-				"]\n";
+			out << "]\n";
 						    
 			out << "/Resources " << resources << " 0 R\n"
 			    << "/FirstChar 0 /LastChar " << cs.GetCount() - 1 <<" /ToUnicode "
@@ -853,7 +914,7 @@ String PdfDraw::Finish(const PdfSignatureInfo *sign)
 		}
 		else {
 			TTFReader ttf;
-			if(!ttf.Open(pdffont.GetKey(i)))
+			if(!ttf.Open(fnt))
 				return Null;
 
 			String name = FormatIntAlpha(i + 1, true);

uppsrc/PdfDraw/PdfDraw.h

@@ -3,7 +3,7 @@
 
 #include <Draw/Draw.h>
 #include <plugin/z/z.h>
-
+#include <Painter/Painter.h>
 
 namespace Upp {
 
@@ -314,7 +314,8 @@ private:
 	Vector<Point> offset_stack;
 	Point       current_offset;
 
-	inline double Pt(double dot)        { return 0.12 * dot; }
+	double Pt(double dot)               { return 0.12 * dot; }
+	String Ptf(double dot)              { return FormatF(Pt(dot), 5); }
 
 	int    Pos()                        { return offset.GetCount() + 1; }
 	int    BeginObj();
@@ -337,22 +338,6 @@ private:
 
 	OutlineInfo GetOutlineInfo(Font fnt);
 
-	struct M22 {
-		double a, b, c, d;
-
-		void Mul(double a1, double b1, double c1, double d1) {
-			M22 t;
-			t.a = a * a1 + b * c1;
-			t.b = a * b1 + b * d1;
-			t.c = c * a1 + d * c1;
-			t.d = c * b1 + d * d1;
-			*this = t;
-		}
-
-		M22(double a, double b, double c, double d) : a(a), b(b), c(c), d(d) {}
-		M22() : a(1), b(0), c(0), d(1) {}
-	};
-
 	void Init(int pagecx, int pagecy, int margin, bool pdfa);
 
 	struct RGlyph : Moveable<RGlyph> {
@@ -361,8 +346,17 @@ private:
 		int    x;
 		int    color_image = -1;
 	};
+	
+	struct CGlyph : Moveable<CGlyph> {
+		Size   sz;
+		int    x;
+		int    image;
+	};
+	
+	VectorMap<Tuple<Font, int>, CGlyph> color_glyph;
 
 	int    PdfImage(const Image& img, const Rect& src);
+	CGlyph ColorGlyph(Font fnt, int chr);
 	RGlyph RasterGlyph(Font fnt, int chr);
 
 public:

uppsrc/PdfDraw/PdfDraw.upp

@@ -1,7 +1,8 @@
 description "PDF output as Draw derived class\377128,0,255";
 
 uses
-	Draw;
+	Draw,
+	Painter;
 
 file
 	PdfDraw.h options(BUILDER_OPTION) PCH,

upptst/PdfText2/PdfText.cpp

@@ -3,28 +3,48 @@
 
 using namespace Upp;
 
-CONSOLE_APP_MAIN
+void DoPaint(Draw& w, int hg, int x1, int x2, int n = INT_MAX)
 {
-	PdfDraw pdf;
 	int cy = 0;
-	pdf.DrawImage(5000, 20, 100, 100, CtrlImg::exclamation());
-//	for(int face = Font::SERIF; face < Font::GetFaceCount(); face++)
-	int face = 19;
+	w.DrawImage(x2, 20, 100, 100, CtrlImg::exclamation());
+	for(int face = Font::SERIF; face < min(n, Font::GetFaceCount()); face++)
 	{
-		Font fnt(face, 100);
+		Font fnt(face, hg);
 		Cout() << fnt << "\n";
 		LOG(face << ' ' << fnt << ", TTF: " << fnt.IsTrueType());
 		String txt = AsString(fnt) + " 訓民正音 (훈민정음) 😜 🤪 ";
-		pdf.DrawText(0, cy, txt, fnt, Black);
-		pdf.DrawText(3000, cy, AsString(fnt) << ' ' << face, StdFont(100), Black);
+		w.DrawRect(0, cy, GetTextSize(txt, fnt).cx, fnt.GetAscent(), Blend(White(), LtBlue()));
+		w.DrawRect(0, cy + fnt.GetAscent(), GetTextSize(txt, fnt).cx, fnt.GetDescent(), Blend(White(), LtRed()));
+		w.DrawText(0, cy, txt, fnt, Black);
+		w.DrawText(x1, cy, AsString(fnt) << ' ' << face, StdFont(hg), Black);
 		cy += fnt.GetLineHeight();
 		if(cy > 6000) {
-			pdf.EndPage();
-			pdf.StartPage();
+			auto *pdf = dynamic_cast<PdfDraw *>(&w);
+			if(pdf) {
+				pdf->EndPage();
+				pdf->StartPage();
+			}
 			cy = 0;
 		}
 	}
-	String p = GetHomeDirFile("pdf.pdf");
-	SaveFile(p, pdf.Finish());
-	LaunchWebBrowser(p);
+}
+
+struct MyApp : TopWindow {
+	void Paint(Draw& w) override {
+		Size sz = GetSize();
+		w.DrawRect(sz, White());
+		DoPaint(w, 24, sz.cx / 2, sz.cx - 100, 10);
+	}
+};
+
+GUI_APP_MAIN
+{
+	PdfDraw pdf;
+	DoPaint(pdf, 100, 3000, 5000);
+	String p = GetHomeDirFile("pdf.pdf");
+	String s = pdf.Finish();
+	DDUMP(s.GetCount());
+	SaveFile(p, s);
+	LaunchWebBrowser(p);
+	MyApp().Run();
 }

upptst/PdfTextAngle/PdfText.cpp

@@ -0,0 +1,35 @@
+#include <CtrlLib/CtrlLib.h>
+#include <PdfDraw/PdfDraw.h>
+
+using namespace Upp;
+
+void DoPaint(Draw& w, int hg, int x1, int y1, int x2, int y2)
+{
+	int cy = 0;
+	w.DrawImage(x2, 20, 100, 100, CtrlImg::exclamation());
+	Font fnt = Serif(hg);
+	for(int i = 0; i < 3600; i += 450) {
+		String txt = "Text with emoji: 訓음 😜🤪 " + AsString(i);
+		w.DrawText(x1, y1, i, txt, fnt, Black);
+		w.DrawText(x2, y2, i, txt, fnt().Italic(), Black);
+	}
+}
+
+struct MyApp : TopWindow {
+	void Paint(Draw& w) override {
+		Size sz = GetSize();
+		w.DrawRect(sz, White());
+		DoPaint(w, 24, sz.cx / 4, sz.cy / 2, sz.cx - sz.cx / 4, sz.cy / 2);
+	}
+};
+
+GUI_APP_MAIN
+{
+	PdfDraw pdf;
+	DoPaint(pdf, 100, 2000, 2000, 2200, 5000);
+	String p = GetHomeDirFile("pdf.pdf");
+	String s = pdf.Finish();
+	SaveFile(p, s);
+	LaunchWebBrowser(p);
+	MyApp().Run();
+}

upptst/PdfTextAngle/PdfTextAngle.upp

@@ -0,0 +1,11 @@
+uses
+	Core,
+	PdfDraw,
+	CtrlLib;
+
+file
+	PdfText.cpp;
+
+mainconfig
+	"" = "GUI";
+