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Step 2 - Design the Panel (Delphi)

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Current Windows and OS X design guidelines place dialog buttons in the lower-right corner. The order of the buttons differs by platform:

  • Windows: Do, Don't, Cancel
  • Mac, iOS, Android: Don't, Cancel, Do

The design for DialogButtonPanel can be created in two ways:

  • Using the FireMonkey Style Designer.
  • Creating a new project, sketching the new component by dragging components on the form and using the .fmx file to create the final style of the DialogButtonPanel.

Using the FireMonkey Style Designer

  1. Go to the PanelDesign form and add a TStyleBook component from the Tool Palette.
  2. Double-click the TStyleBook to open the FireMonkey Style Designer.
  3. Drag and drop a TRectangle from the Tool Palette to the object design area of the FireMonkey Style Designer. Set the Fill.Kind and Stroke.Kind to None so that the panel is transparent by default.
    TRectangle is used to define the DialogButtonPanel area and to render it. (Feel free to use any other control.)
  4. Drag and drop a TLayout to the TRectangle.
    With TLayout in focus within the Object TreeView of the style designer:
    • Set the Align to Bottom.
    • Add another TLayout aligned to Top.
  5. To the last added TLayout, add three buttons: Do, Don't, Cancel.
    1. For the Do button:
    2. For the Don't button:
      • There is no built-in code for Don't, but the negative of mrOK, which equals -1, is appropriate. Set ModalResult to -1.
      • Set the StyleName to DontButton.
    3. For the Cancel button:
    Note that this button order matches neither Windows, Mac, iOS or Android. You can adjust the order later. Align each button to Left, so they "stack" to the left, and each has an appropriate Left Padding. To get a better sense of the width of the buttons, include a placeholder word for the verb in the Do/Don't button labels. The total width of the buttons, their horizontal padding, and extra space to the right of the last button must be assigned as the Width of the right-aligned layout. The Height of the other two layouts must reflect the height of the buttons, the padding above, and for the outer panel, the space below them.
    The final style design should look like this:
    DialogButtonPanel win.style.png
  6. Create specific styles for each platform and save them as DialogButtonPanel_win.style, DialogButtonPanel_mac.style, DialogButtonPanel_ios.style and DialogButtonPanel_android.style.
  7. You can also make changes directly in the .style files and then save the changes.
  8. As you can observe, each .style file contains the content of the style book inside a root TLayout component:
object _1: TLayout
  { All objects would appear here, instead of this comment. Comments are not allowed in .style files! }
end
The wrapper TLayout is required to load the styles in the Style Designer, but to actually use the style as the default style for a custom component, you will want to remove the wrapper so that the rectangle (in this case) can be accessed directly. The end result should be two separate platform-specific files:
DialogButtonPanel_win.style DialogButtonPanel_mac.style DialogButtonPanel_ios.style DialogButtonPanel_android.style
object TRectangle
    StyleName = 'DialogButtonPanelStyle'
    Align = Bottom
    Position.Point = '(0,264)'
    Width = 600.000000000000000000
    Height = 46.000000000000000000
    ClipChildren = True
    HitTest = False
    Fill.Kind = None
    Stroke.Kind = None
    Sides = [Top, Left, Bottom, Right]
    object TLayout
      Align = Right
      Position.Point = '(261,0)'
      Width = 288.000000000000000000
      Height = 46.000000000000000000
      object TLayout
        Align = Top
        Position.Point = '(0,12)'
        Width = 288.000000000000000000
        Height = 22.000000000000000000
        Padding.Rect = '(0,12,0,0)'
        object TButton
          StyleName = 'DoButton'
          Align = Left
          Position.Point = '(12,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 0
          StaysPressed = False
          IsPressed = False
          ModalResult = 1
          Text = 'Do Verb'
          Default = True
        end
        object TButton
          StyleName = 'DontButton'
          Align = Left
          Position.Point = '(104,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 1
          StaysPressed = False
          IsPressed = False
          ModalResult = -1
          Text = 'Don'#39't Verb'
        end
        object TButton
          StyleName = 'CancelButton'
          Align = Left
          Position.Point = '(196,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 2
          StaysPressed = False
          IsPressed = False
          ModalResult = 2
          Text = 'Cancel'
          Cancel = True
        end
      end
    end
  end
object TRectangle
    StyleName = 'DialogButtonPanelStyle'
    Align = Bottom
    Position.Point = '(0,264)'
    Width = 600.000000000000000000
    Height = 46.000000000000000000
    ClipChildren = True
    HitTest = False
    Fill.Kind = None
    Stroke.Kind = None
    Sides = [Top, Left, Bottom, Right]
    object TLayout
      Align = Right
      Position.Point = '(249,0)'
      Width = 300.000000000000000000
      Height = 46.000000000000000000
      object TLayout
        Align = Top
        Position.Point = '(0,12)'
        Width = 300.000000000000000000
        Height = 22.000000000000000000
        Padding.Rect = '(0,12,0,0)'
        object TButton
          StyleName = 'DontButton'
          Align = Left
          Position.Point = '(12,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,12,0)'
          TabOrder = 0
          StaysPressed = False
          IsPressed = False
          ModalResult = -1
          Text = 'Don'#39't Verb'
        end
        object TButton
          StyleName = 'CancelButton'
          Align = Left
          Position.Point = '(116,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 1
          StaysPressed = False
          IsPressed = False
          ModalResult = 2
          Text = 'Cancel'
          Cancel = True
        end
        object TButton
          StyleName = 'DoButton'
          Align = Left
          Position.Point = '(208,0)'
          Width = 80.000000000000000000
          Height = 22.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 2
          StaysPressed = False
          IsPressed = False
          ModalResult = 1
          Text = 'Do Verb'
          Default = True
        end
      end
    end
  end
object TRectangle
    StyleName = 'DialogButtonPanelStyle'
    Align = Bottom
    Position.Point = '(0,28)'
    Width = 332.000000000000000000
    Height = 50.000000000000000000
    ClipChildren = True
    HitTest = False
    Fill.Kind = None
    Stroke.Kind = None
    Sides = [Top, Left, Bottom, Right]
    object TLayout
      Align = Right
      Position.Point = '(44,0)'
      Width = 288.000000000000000000
      Height = 50.000000000000000000
      object TLayout
        Align = Top
        Width = 288.000000000000000000
        Height = 22.000000000000000000
        object TButton
          StyleName = 'DontButton'
          Align = Left
          Position.Point = '(104,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,12,0)'
          TabOrder = 0
          StaysPressed = False
          IsPressed = False
          ModalResult = -1
          Text = 'Don'#39't Verb'
        end
        object TButton
          StyleName = 'CancelButton'
          Align = Left
          Position.Point = '(196,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 1
          StaysPressed = False
          IsPressed = False
          ModalResult = 2
          Text = 'Cancel'
          Cancel = True
        end
        object TButton
          StyleName = 'DoButton'
          Align = Left
          Position.Point = '(12,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 2
          StaysPressed = False
          IsPressed = False
          ModalResult = 1
          Text = 'Do Verb'
          Default = True
        end
      end
    end
  end
object TRectangle
    StyleName = 'DialogButtonPanelStyle'
    Align = Bottom
    Position.Point = '(0,28)'
    Width = 332.000000000000000000
    Height = 50.000000000000000000
    ClipChildren = True
    HitTest = False
    Fill.Kind = None
    Stroke.Kind = None
    Sides = [Top, Left, Bottom, Right]
    object TLayout
      Align = Right
      Position.Point = '(44,0)'
      Width = 288.000000000000000000
      Height = 50.000000000000000000
      object TLayout
        Align = Top
        Width = 288.000000000000000000
        Height = 22.000000000000000000
        object TButton
          StyleName = 'DontButton'
          Align = Left
          Position.Point = '(104,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,12,0)'
          TabOrder = 0
          StaysPressed = False
          IsPressed = False
          ModalResult = -1
          Text = 'Don'#39't Verb'
        end
        object TButton
          StyleName = 'CancelButton'
          Align = Left
          Position.Point = '(196,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 1
          StaysPressed = False
          IsPressed = False
          ModalResult = 2
          Text = 'Cancel'
          Cancel = True
        end
        object TButton
          StyleName = 'DoButton'
          Align = Left
          Position.Point = '(12,0)'
          Width = 90.000000000000000000
          Height = 30.000000000000000000
          Padding.Rect = '(12,0,0,0)'
          TabOrder = 2
          StaysPressed = False
          IsPressed = False
          ModalResult = 1
          Text = 'Do Verb'
          Default = True
        end
      end
    end
  end

Using .fmx files

  1. In the PanelDesign form, explicitly sketch out the new component by adding to the form the same components like the ones used above.
  2. Make the same changes as above for each used component.
    The result should look like this:
    DialogButtonPanel in a form.png
  3. Go to the PanelDesign.fmx file and open it.
  4. Extract starting from object Rectangle1: TRectangle to the corresponding end tag.
  5. Copy and save the extracted lines to a .style file.
  6. Make any changes you need and save it as DialogButtonPanel_win.style.
  7. Arrange the buttons to apply the order for Mac, iOS and Android, create and save the DialogButtonPanel_mac.style, DialogButtonPanel_ios.style or DialogButtonPanel_android.style files.

The file content for the Windows platform should look like this:

 object Rectangle1: TRectangle
    Align = Bottom
    Fill.Kind = None
    Height = 50.000000000000000000
    Position.Y = 28.000000000000000000
    Stroke.Kind = None
    Width = 332.000000000000000000
    object Layout1: TLayout
      Align = Right
      Height = 50.000000000000000000
      Position.X = 44.000000000000000000
      Width = 288.000000000000000000
      object Layout2: TLayout
        Align = Top
        Height = 22.000000000000000000
        Width = 288.000000000000000000
        object Button1: TButton
          StyleName = 'DoButton'
          Align = Left
          Default = True
          DisableFocusEffect = False
          Height = 22.000000000000000000
          ModalResult = 1
          Padding.Left = 12.000000000000000000
          Position.X = 12.000000000000000000
          Text = 'Do Verb'
          Width = 80.000000000000000000
        end
        object Button2: TButton
          StyleName = 'DontButton'
          Align = Left
          DisableFocusEffect = False
          Height = 22.000000000000000000
          ModalResult = -1
          Padding.Left = 12.000000000000000000
          Position.X = 104.000000000000000000
          Text = 'Don'#39't Verb'
          Width = 80.000000000000000000
        end
        object Button3: TButton
          StyleName = 'CancelButton'
          Align = Left
          Cancel = True
          DisableFocusEffect = False
          Height = 22.000000000000000000
          ModalResult = 2
          Padding.Left = 12.000000000000000000
          Position.X = 196.000000000000000000
          Text = 'Cancel'
          Width = 80.000000000000000000
        end
      end
    end
  end


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