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#include <CtrlLib/CtrlLib.h> using namespace Upp; class Testcase5 : public TopWindow { public: typedef Testcase5 CLASSNAME; Rect loc; Testcase5(){ loc.SetNull(); } void Paint(Draw &w){ w.DrawRect(Rect(GetSize()),White()); loc.SetNull(); } void MouseMove(Point p, dword keyflags){ ImageBuffer sb(32,32); BufferPainter sbp(sb); sbp.Clear(RGBAZero()); sbp.Move(0,0).Line(31,31); sbp.Move(0,31).Line(31,0); sbp.Stroke(5,Gray()); ViewDraw draw(this); if(!loc.IsNullInstance()) draw.DrawRect(loc,White()); loc.Set(p.x-16,p.y-16,p.x+16,p.y+16); draw.DrawImage(loc.left,loc.top,Image(sb)); } }; GUI_APP_MAIN { Testcase5().Run(); }

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class Testcase5 : public TopWindow {
public:
	typedef Testcase5 CLASSNAME;
	
	Rect loc;
	
	ImageBuffer map;
	
	Testcase5(){
		loc.SetNull();
	}

	void Paint(Draw &w){
		int64 t0=usecs();
		
		SetSurface(w,Rect(map.GetSize()),map,map.GetSize(),Point(0,0));
		loc.SetNull();
		
		int64 t1=usecs();
		Title(Format("Paint took %lld us",t1-t0));
	}
	
	void Layout(){
		Size sz=GetSize();
		map.Create(sz);
		BufferPainter bp(map);
		bp.RectPath(Rect(sz));
		bp.Fill(Pointf(0,0),Green(),Pointf(sz.cx-1,sz.cy-1),Yellow());
		bp.Move(0,0).Line(Pointf(sz.cx-1,sz.cy-1)).Stroke(1,Black());
		bp.Move(0,sz.cy-1).Line(Pointf(sz.cx-1,0)).Stroke(1,Black());
	}
	
	void MouseMove(Point p, dword keyflags){
		int64 t0=usecs();
		
		Rect area;
		area.SetNull();
		if(!loc.IsNullInstance()) area.Union(loc);
		loc.Set(p.x-16,p.y-16,p.x+16,p.y+16);
		area.Union(loc);
		area.Inflate(2);
		area.Intersect(Rect(GetSize()));
		
		ImageBuffer sb(area.GetSize());
		for(int y=0;y<area.Height();y++) memcpy(sb[y],&map[y+area.top][area.left],sizeof(RGBA)*area.Width());

		BufferPainter sbp(sb);
		sbp.Translate(loc.left-area.left,loc.top-area.top);
		sbp.Move(0,0).Line(31,31);
		sbp.Move(0,31).Line(31,0);
		sbp.Stroke(5,Black());
		
		ViewDraw draw(this,area);
		SetSurface(draw,area.GetSize(),sb,sb.GetSize(),Point(0,0));
		
		int64 t1=usecs();
		Title(Format("Move took %lld us",t1-t0));
		
	}
};


GUI_APP_MAIN
{
	Testcase5().Sizeable().MaximizeBox().MinimizeBox().Run();
}

void SystemDraw::SysDrawImageOp(int x, int y, const Image& img, Color color) { ... // cache.Shrink(4 * 1024 * 768, 1000); // Cache must be after Paint because of PaintOnly! cache.Shrink(4 * 3840 * 2160, 1000); // Cache must be after Paint because of PaintOnly! }

//Size sz = Ctrl::GetPrimaryScreenArea().GetSize(); Size sz(3840,2160); // Twice as fast compared to the above... why? cache.Shrink(4 * sz.cx * sz.cy, 1000); // Cache must be after Paint because of PaintOnly!