.reference

git-svn-id: svn://ultimatepp.org/upp/trunk@15866 f0d560ea-af0d-0410-9eb7-867de7ffcac7

reference/Pen/Pen.upp

@@ -0,0 +1,11 @@
+description "Pen support (drawing with pen, reacting to pressure)\377";
+
+uses
+	CtrlLib;
+
+file
+	main.cpp;
+
+mainconfig
+	"" = "GUI";
+

reference/Pen/main.cpp

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+#include <CtrlLib/CtrlLib.h>
+
+using namespace Upp;
+
+struct MyApp : TopWindow {
+	Point pos;
+	
+	Vector<Vector<Tuple<double, Pointf>>> drawing;
+
+	PenInfo pen;
+	
+	virtual bool Pen(Point p, const PenInfo& pn, dword keyflags) {
+		if(pn.pressure) {
+			if((!!pn.pressure == !!pen.pressure) && drawing.GetCount())
+				drawing.Top().Add(MakeTuple(pn.pressure, p));
+			else
+				drawing.Add().Add(MakeTuple(pn.pressure, p));
+		}
+		pen = pn;
+		Refresh();
+		return true;
+	}
+	
+	virtual void Paint(Draw& w0) {
+		DrawPainter w(w0, GetSize());
+		w.Co();
+		w.Clear(SColorPaper());
+		
+		w.LineCap(LINECAP_ROUND);
+		for(const auto& stroke : drawing)
+			if(stroke.GetCount())
+				for(int i = 0; i < stroke.GetCount() - 1; i++) {
+					w.Move(stroke[i].b);
+					w.Line(stroke[i + 1].b);
+					w.Stroke(DPI(20) * stroke[i].a, Black());
+				}
+		
+		int fcy = GetStdFontCy();
+		int y = 10;
+		auto Text = [&] (const String& text) {
+			w.DrawText(10, y, text);
+			y += fcy;
+		};
+		Text(AsString(pos));
+		Text(String() << "Pressure: " << pen.pressure);
+		Text(String() << "Rotation: " << pen.rotation);
+		Text(String() << "Tilt: " << pen.tilt);
+		Text(String() << "Barrel: " << pen.barrel);
+		Text(String() << "Inverted: " << pen.inverted);
+		Text(String() << "Eraser: " << pen.eraser);
+	}
+};
+
+GUI_APP_MAIN
+{
+	MyApp().Run();
+}