private void DrawingApp_MouseMove(object sender, MouseEventArgs e)
{
if (mouse_down)
{
var mouse_pos = this.PointToClient(Cursor.Position);
int size_x = mouse_pos.X - initial_mouse_pos.X;
int size_y = mouse_pos.Y - initial_mouse_pos.Y;
if (mode == "Move")
{
foreach (shape current_shape in shapequeue)
{
if (current_shape.is_selected)
{
//Change the position of every shape that has the is_selected boolean active.
current_shape.pos_x = mouse_pos.X - current_shape.size_x / 2;
current_shape.pos_y = mouse_pos.Y - current_shape.size_y / 2;
this.Refresh();
}
}
}
if (mode == "Resize")
{
foreach (shape current_shape in shapequeue)
{
if (current_shape.is_selected)
{
//Change the size of every shape that has the is_selected boolean active.
current_shape.size_x = mouse_pos.X - current_shape.pos_x;
current_shape.size_y = mouse_pos.Y - current_shape.pos_y;
this.Refresh();
}
}
}
else
{
label1.Text = "Coordinates: " + this.PointToClient(Cursor.Position).X + "x" + this.PointToClient(Cursor.Position).Y;
//Every posible direction to draw a new shape is handled here.
if (size_x < 0 && size_y > 0)
{
if (mode == "Create Rectangle")
{
//Just the outline rectangle is drawn first
outline = new shape("Outline Rectangle", Color.Black, mouse_pos.X, initial_mouse_pos.Y, size_x * -1, size_y, false);
}
else if (mode == "Create Ellipse")
{
outline = new shape("Outline Ellipse", Color.Black, mouse_pos.X, initial_mouse_pos.Y, size_x * -1, size_y, false);
}
}
else if (size_x > 0 && size_y < 0)
{
if (mode == "Create Rectangle")
{
outline = new shape("Outline Rectangle", Color.Black, initial_mouse_pos.X, mouse_pos.Y, size_x, size_y * -1, false);
}
else if (mode == "Create Ellipse")
{
outline = new shape("Outline Ellipse", Color.Black, initial_mouse_pos.X, mouse_pos.Y, size_x, size_y * -1, false);
}
}
else if (size_x < 0 && size_y < 0)
{
if (mode == "Create Rectangle")
{
outline = new shape("Outline Rectangle", Color.Black, mouse_pos.X, mouse_pos.Y, size_x * -1, size_y * -1, false);
}
else if (mode == "Create Ellipse")
{
outline = new shape("Outline Ellipse", Color.Black, mouse_pos.X, mouse_pos.Y, size_x * -1, size_y * -1, false);
}
}
else
{
if (mode == "Create Rectangle")
{
outline = new shape("Outline Rectangle", Color.Black, initial_mouse_pos.X, initial_mouse_pos.Y, size_x, size_y, false);
}
else if (mode == "Create Ellipse")
{
outline = new shape("Outline Ellipse", Color.Black, initial_mouse_pos.X, initial_mouse_pos.Y, size_x, size_y, false);
}
}
this.Refresh();
}
}
}
private void DrawingApp_MouseUp(object sender, MouseEventArgs e)
{
mouse_down = false;
//This is the code to select a shape while Move or Resize is selected.
if (mode == "Move" | mode == "Resize")
{
//The reverse queue will pick the top most shape to be selected.
foreach (shape current_shape in shapequeue.Reverse())
{
if (new Rectangle(current_shape.pos_x, current_shape.pos_y, current_shape.size_x, current_shape.size_y).Contains(initial_mouse_pos))
{
current_shape.is_selected = !current_shape.is_selected;
//Make sure to break or else all the underlaying shapes will also be selected.
break;
}
}
}
else
{
var mouse_pos = this.PointToClient(Cursor.Position);
//A random color is chosen to give to the newly created shape.
Color randomColor = Color.FromArgb(Random.Next(255), Random.Next(255), Random.Next(255));
//The size of the new shape can already be calculated.
int size_x = mouse_pos.X - initial_mouse_pos.X;
int size_y = mouse_pos.Y - initial_mouse_pos.Y;
if (size_x < 0 && size_y > 0)
{
if (mode == "Create Rectangle")
{
//To not have any negative numbers some of the variables need to be multiplied by -1.
shapequeue.Enqueue(new shape("Rectangle", randomColor, mouse_pos.X, initial_mouse_pos.Y, size_x * -1, size_y, false));
}
else if (mode == "Create Ellipse")
{
shapequeue.Enqueue(new shape("Ellipse", randomColor, mouse_pos.X, initial_mouse_pos.Y, size_x * -1, size_y, false));
}
}
else if (size_x > 0 && size_y < 0)
{
if (mode == "Create Rectangle")
{
shapequeue.Enqueue(new shape("Rectangle", randomColor, initial_mouse_pos.X, mouse_pos.Y, size_x, size_y * -1, false));
}
else if (mode == "Create Ellipse")
{
shapequeue.Enqueue(new shape("Ellipse", randomColor, initial_mouse_pos.X, mouse_pos.Y, size_x, size_y * -1, false));
}
}
else if (size_x < 0 && size_y < 0)
{
if (mode == "Create Rectangle")
{
shapequeue.Enqueue(new shape("Rectangle", randomColor, mouse_pos.X, mouse_pos.Y, size_x * -1, size_y * -1, false));
}
else if (mode == "Create Ellipse")
{
shapequeue.Enqueue(new shape("Ellipse", randomColor, mouse_pos.X, mouse_pos.Y, size_x * -1, size_y * -1, false));
}
}
else
{
if (mode == "Create Rectangle")
{
shapequeue.Enqueue(new shape("Rectangle", randomColor, initial_mouse_pos.X, initial_mouse_pos.Y, size_x, size_y, false));
}
else if (mode == "Create Ellipse")
{
shapequeue.Enqueue(new shape("Ellipse", randomColor, initial_mouse_pos.X, initial_mouse_pos.Y, size_x, size_y, false));
}
}
outline = null;
}
//Once the shape is added the whole window needs to be refreshed.
this.Refresh();
}
