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Tools.cs
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Tools.cs
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using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections.Generic;
using System.Linq;
namespace SchetsEditor
{
public interface ISchetsTool
{
void MuisVast(SchetsControl s, Point p);
void MuisDrag(SchetsControl s, Point p);
void MuisLos(SchetsControl s, Point p, UndoRedoController u = null);
void Letter(SchetsControl s, char c, UndoRedoController u = null);
}
public abstract class StartpuntTool : ISchetsTool
{
protected Point startpunt;
protected Brush kwast;
protected bool isPen;
/// <summary>
/// The Stack containing all of the coordinates of the drawing by Pentool.
/// </summary>
protected List<Point> penLijn = new List<Point>();
public virtual void MuisVast(SchetsControl s, Point p)
{
startpunt = p;
}
public virtual void MuisLos(SchetsControl s, Point p, UndoRedoController u = null)
{
kwast = new SolidBrush(s.PenKleur);
}
public abstract void MuisDrag(SchetsControl s, Point p);
public abstract void Letter(SchetsControl s, char c, UndoRedoController u = null);
}
public class TekstTool : StartpuntTool
{
public override string ToString() { return "tekst"; }
public override void MuisDrag(SchetsControl s, Point p) { }
public override void Letter(SchetsControl s, char c, UndoRedoController u)
{
if (c >= 32)
{
Graphics gr = s.MaakBitmapGraphics();
Font font = new Font("Tahoma", 40);
string tekst = c.ToString();
SizeF sz = gr.MeasureString(tekst, font, this.startpunt, StringFormat.GenericTypographic);
gr.DrawString(tekst, font, kwast,
this.startpunt, StringFormat.GenericTypographic);
u.addInstruction(new DrawInstuction(ElementType.Tekst, s.PenKleur, startpunt, font, c));
//Checks whether the input was a space and sets the size manually.
startpunt.X += c == 32 ? 10 : (int)sz.Width;
s.Invalidate();
}
}
}
public abstract class TweepuntTool : StartpuntTool
{
public static Rectangle Punten2Rechthoek(Point p1, Point p2)
{
return new Rectangle(new Point(Math.Min(p1.X, p2.X), Math.Min(p1.Y, p2.Y))
, new Size(Math.Abs(p1.X - p2.X), Math.Abs(p1.Y - p2.Y))
);
}
public static Pen MaakPen(Brush b, int dikte)
{
Pen pen = new Pen(b, dikte);
pen.StartCap = LineCap.Round;
pen.EndCap = LineCap.Round;
return pen;
}
public override void MuisVast(SchetsControl s, Point p)
{
base.MuisVast(s, p);
kwast = Brushes.Gray;
}
public override void MuisDrag(SchetsControl s, Point p)
{
this.Bezig(s.CreateGraphics(), this.startpunt, p);
s.Invalidate();
}
public override void MuisLos(SchetsControl s, Point p, UndoRedoController u = null)
{
base.MuisLos(s, p, u);
this.Compleet(u, s.MaakBitmapGraphics(), this.startpunt, p);
s.Invalidate();
}
public override void Letter(SchetsControl s, char c, UndoRedoController u = null)
{
}
public abstract void Bezig(Graphics g, Point p1, Point p2, UndoRedoController u = null);
public virtual void Compleet(UndoRedoController u, Graphics g, Point p1, Point p2)
{
this.Bezig(g, p1, p2, u);
}
}
public class RechthoekTool : TweepuntTool
{
public override string ToString() { return "kader"; }
public override void Bezig(Graphics g, Point p1, Point p2, UndoRedoController u = null)
{
g.DrawRectangle(MaakPen(kwast, 3), TweepuntTool.Punten2Rechthoek(p1, p2));
if (u != null)
{
u.addInstruction(new DrawInstuction(ElementType.DrawRectangle, ((SolidBrush)kwast).Color, p1, p2, 3));
}
}
}
public class VolRechthoekTool : RechthoekTool
{
public override string ToString() { return "vlak"; }
public override void Compleet(UndoRedoController u, Graphics g, Point p1, Point p2)
{
g.FillRectangle(kwast, TweepuntTool.Punten2Rechthoek(p1, p2));
u.addInstruction(new DrawInstuction(ElementType.FillRectangle, ((SolidBrush)kwast).Color, p1, p2, 3));
}
}
public class EllipseTool : TweepuntTool
{
public override string ToString() { return "ellipse"; }
public override void Bezig(Graphics g, Point p1, Point p2, UndoRedoController u = null)
{
g.DrawEllipse(MaakPen(kwast, 3), TweepuntTool.Punten2Rechthoek(p1, p2));
if (u != null)
{
u.addInstruction(new DrawInstuction(ElementType.DrawEllipse, ((SolidBrush)kwast).Color, p1, p2, 3));
}
}
}
public class VolEllipseTool : EllipseTool
{
public override string ToString() { return "volellipse"; }
public override void Compleet(UndoRedoController u, Graphics g, Point p1, Point p2)
{
g.FillEllipse(kwast, TweepuntTool.Punten2Rechthoek(p1, p2));
u.addInstruction(new DrawInstuction(ElementType.FillEllipse, ((SolidBrush)kwast).Color, p1, p2, 3));
}
}
public class LijnTool : TweepuntTool
{
public override string ToString() { return "lijn"; }
public override void Bezig(Graphics g, Point p1, Point p2, UndoRedoController u = null)
{
//Check whether the line is drawn with the Pentool, then push the points to the stack penLijn.
if (this.isPen)
{
this.penLijn.Add(p1);
this.penLijn.Add(p2);
}
g.DrawLine(MaakPen(this.kwast, 3), p1, p2);
//Check whether the UndoRedoController is passed to the function, then add the definitive instruction to it.
if (u != null)
{
if (this.penLijn.Count > 0) //Check whether there are points in the stack, if so then it was drawn with the Pentool.
{
///Could maybe split the penLijn to multiple smaller points.
u.addInstruction(new DrawInstuction(ElementType.Pen, ((SolidBrush)this.kwast).Color, this.penLijn, 3));
this.penLijn = new List<Point>();
}
else //This means its just a normal straight line.
{
u.addInstruction(new DrawInstuction(ElementType.Line, ((SolidBrush)this.kwast).Color, p1, p2, 3));
}
}
}
}
public class PenTool : LijnTool
{
public override string ToString() { return "pen"; }
public override void MuisDrag(SchetsControl s, Point p)
{
//Set the global value of isPen to be what it is, true. Then reset.
this.isPen = true;
this.MuisLos(s, p);
this.MuisVast(s, p);
this.isPen = false;
}
}
public class GumTool : PenTool
{
public override string ToString() { return "gum"; }
public override void MuisLos(SchetsControl s, Point p, UndoRedoController u = null)
{
if(u != null)
{
//We have to reverse a temporary list because we want to delete the last added item.
List<DrawInstuction> reverseElementList = new List<DrawInstuction>(u.UndoList);
reverseElementList.Reverse();
Graphics g = s.CreateGraphics();
GraphicsPath gp = new GraphicsPath();
bool visible = false;
foreach(DrawInstuction uu in reverseElementList)
{
//Here we check the elementtype and if it is visible,
//we do this so that only the border of ellipses become clickable instead of the whole circle to make it more user friendly
switch (uu.elementType)
{
case ElementType.DrawEllipse:
gp.AddEllipse(uu.ToRectangle());
visible = gp.IsOutlineVisible(p.X, p.Y, uu.CreatePen());
break;
case ElementType.FillEllipse:
gp.AddEllipse(uu.ToRectangle());
visible = gp.IsVisible(p.X, p.Y);
break;
case ElementType.DrawRectangle:
gp.AddRectangle(uu.ToRectangle());
visible = gp.IsOutlineVisible(p.X, p.Y, uu.CreatePen());
break;
case ElementType.FillRectangle:
gp.AddRectangle(uu.ToRectangle());
visible = gp.IsVisible(p.X, p.Y);
break;
case ElementType.Line:
gp.AddLine(uu.startPunt, uu.eindPunt);
visible = gp.IsOutlineVisible(p.X, p.Y, uu.CreatePen());
break;
case ElementType.Pen:
Point lastPoint = uu.puntenVanLijn.First();
foreach (Point pointOnLine in uu.puntenVanLijn)
{
gp.AddLine(pointOnLine, lastPoint);
lastPoint = pointOnLine;
}
visible = gp.IsOutlineVisible(p.X, p.Y, uu.CreatePen());
break;
default:
u.UndoList.Remove(uu);
u.RedoList.Add(uu);
break;
}
// Here we have to only check visible because everything is checked by the switch.
if (visible)
{
u.UndoList.Remove(uu);
u.RedoList.Add(uu);
break;
}
visible = false;
}
s.Schets.Schoon();
u.UndoList.DrawElements(s.MaakBitmapGraphics());
s.Refresh();
}
}
}
}