FMXTBrush (Delphi)

From RAD Studio Code Examples
Jump to: navigation, search

Description

This example is a Multi-Device Application that demonstrates how to use different properties of TBrush.

This example requires the following components:

The form should look like in the following image.

TBrush new.JPG

Disable all the components, except the Ellipse, the ComboBox, and the Labels. Set the text to the labels as null ( ' ' ), except for the one above the ComboBox. Set its text to 'Choose a style for the Ellipse:' . Load different Bitmap files to the Bitmap property of the Image objects.

Code

//Delphi

procedure TForm1.ColorListBox1Change(Sender: TObject);
begin
  // Verify the Style of the TBrush and use the selected color accordingly (as the color of the brush or as the first gradient color)
  if (Ellipse1.Fill.Kind = TbrushKind.Solid) then
    Ellipse1.Fill.Color := ColorListBox1.Color
  else
    Ellipse1.Fill.Gradient.Color := ColorListBox1.Color;
end;

procedure TForm1.ColorListBox2Change(Sender: TObject);
begin
  // Use the selected color as the second color of the gradient
  Ellipse1.Fill.Gradient.Color1 := ColorListBox2.Color;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Ellipse1.Fill.Kind := TbrushKind.None;
end;

procedure TForm1.Image1Click(Sender: TObject);
begin
  // Set the Brush's pattern to be the first image
  Ellipse1.Fill.Bitmap.Bitmap := Image1.Bitmap;
  Ellipse1.Repaint;
end;

procedure TForm1.Image2Click(Sender: TObject);
begin
  // Set the Brush's pattern to be the second image
  Ellipse1.Fill.Bitmap.Bitmap := Image2.Bitmap;
  Ellipse1.Repaint;
end;

procedure TForm1.Image3Click(Sender: TObject);
begin
  // Set the Brush's pattern to be the third image
  Ellipse1.Fill.Bitmap.Bitmap := Image3.Bitmap;
  Ellipse1.Repaint;
end;

procedure TForm1.Image4Click(Sender: TObject);
begin
  // Set the Brush's pattern to be the fourth image
  Ellipse1.Fill.Bitmap.Bitmap := Image4.Bitmap;
  Ellipse1.Repaint;
end;

// Set the style of the TBrush according to the selected option and
// enable the components needed to set the other TBrush properties

procedure TForm1.ListBoxItem1Click(Sender: TObject);
begin
  Label3.Text := 'Choose a color:';
  Label4.Text := '';
  Label2.Text := '';
  Ellipse1.Fill.Kind := TbrushKind.Solid;
  ColorListBox1.Enabled := True;
  ColorListBox2.Enabled := False;
  Image1.Enabled := False;
  Image2.Enabled := False;
  Image3.Enabled := False;
  Image4.Enabled := False;
end;

procedure TForm1.ListBoxItem2Click(Sender: TObject);
begin
  Label3.Text := 'Choose the top color:';
  Label4.Text := 'Choose the bottom color:';
  Label2.Text := '';
  Ellipse1.Fill.Kind := TbrushKind.Gradient;
  ColorListBox1.Enabled := True;
  ColorListBox2.Enabled := True;
  Image1.Enabled := False;
  Image2.Enabled := False;
  Image3.Enabled := False;
  Image4.Enabled := False;
end;

procedure TForm1.ListBoxItem3Click(Sender: TObject);
begin
  Label2.Text := 'Choose an image:';
  Label3.Text := '';
  Label4.Text := '';
  Ellipse1.Fill.Kind := TbrushKind.Bitmap;
  ColorListBox1.Enabled := False;
  ColorListBox2.Enabled := False;
  Image1.Enabled := True;
  Image2.Enabled := True;
  Image3.Enabled := True;
  Image4.Enabled := True;
  Ellipse1.Fill.Bitmap.WrapMode := TWrapMode.TileStretch;
end;

Uses

See Also

Personal tools
Assistance