examples: SVGView

git-svn-id: svn://ultimatepp.org/upp/trunk@7996 f0d560ea-af0d-0410-9eb7-867de7ffcac7

examples/SVGView/main.cpp

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+#include <CtrlLib/CtrlLib.h>
+#include <Painter/Painter.h>
+
+using namespace Upp;
+
+struct SvgView : public TopWindow {
+	virtual bool Key(dword key, int);
+	virtual void Paint(Draw& w);
+
+	String                svg;
+	FileList              files;
+	SplitterFrame         splitter;
+	String                dir;
+	FrameTop<Button>      dirup;
+
+	void Load(const char *filename);
+	void Enter();
+	void DoDir();
+	void DirUp();
+
+	typedef SvgView CLASSNAME;
+
+	void Serialize(Stream& s);
+	void LoadDir(const char *d);
+	void LoadDir()                      { LoadDir(dir); }
+
+	SvgView();
+};
+
+void SvgView::Paint(Draw& w)
+{
+	Size sz = GetSize();
+	w.DrawRect(sz, Gray());
+	Image img = RenderSVGImage(sz, svg);
+	Point p = Rect(sz).CenterPos(img.GetSize());
+	w.DrawImage(p.x, p.y, img);
+}
+
+void SvgView::Load(const char *filename)
+{
+	svg = LoadFileBOM(filename);
+	Refresh();
+}
+
+void SvgView::LoadDir(const char *d)
+{
+	files.Clear();
+	dir = d;
+	Title(dir);
+	::Load(files, dir, "*.*");
+	SortByExt(files);
+}
+
+void SvgView::DirUp()
+{
+	String n = DirectoryUp(dir);
+	LoadDir(dir);
+	files.FindSetCursor(n);
+}
+
+void SvgView::Enter()
+{
+	if(!files.IsCursor()) {
+		Title(dir);
+		return;
+	}
+	const FileList::File& f = files.Get(files.GetCursor());
+	if(f.name == "..") {
+		Title(dir);
+		return;
+	}
+	String p = AppendFileName(dir, f.name);
+	Title(p);
+	if(!f.isdir)
+		Load(p);
+}
+
+void SvgView::DoDir()
+{
+	if(!files.IsCursor())
+		return;
+	const FileList::File& f = files.Get(files.GetCursor());
+	if(!f.isdir)
+		return;
+	LoadDir(AppendFileName(dir, f.name));
+}
+
+bool SvgView::Key(dword key, int)
+{
+	if(key == K_ENTER) {
+		DoDir();
+		return true;
+	}
+	return false;
+}
+
+void SvgView::Serialize(Stream& s)
+{
+	int version = 0;
+	s / version;
+	SerializePlacement(s);
+	files.SerializeSettings(s);
+	s % dir;
+	s % splitter;
+}
+
+SvgView::SvgView()
+{
+	files.WhenEnterItem = THISBACK(Enter);
+	files.WhenLeftDouble = THISBACK(DoDir);
+	dirup.Height(max(CtrlImg::DirUp().GetSize().cy, Draw::GetStdFontCy() + 6));
+	dirup.SetImage(CtrlImg::DirUp());
+	dirup.NormalStyle();
+	dirup <<= THISBACK(DirUp);
+	files.AddFrame(dirup);
+
+	Sizeable().Zoomable();
+	
+	AddFrame(splitter.Left(files, 200));
+
+	dir = GetDataFile("svg");
+}
+
+GUI_APP_MAIN
+{
+	SvgView x;
+	LoadFromFile(x);
+	x.LoadDir();
+	x.Run();
+	StoreToFile(x);
+}