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https://github.com/salvadordf/CEF4Delphi.git
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113 lines
3.9 KiB
ObjectPascal
113 lines
3.9 KiB
ObjectPascal
unit uCEFMenuButton;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$I cef.inc}
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{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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System.Classes, System.SysUtils,
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{$ELSE}
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Classes, SysUtils,
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{$ENDIF}
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes, uCEFLabelButton;
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type
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/// <summary>
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/// MenuButton is a button with optional text, icon and/or menu marker that
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/// shows a menu when clicked with the left mouse button. All size and position
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/// values are in density independent pixels (DIP) unless otherwise indicated.
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/// Methods must be called on the browser process UI thread unless otherwise
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/// indicated.
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/// </summary>
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/// <remarks>
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/// <para><see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_menu_button_capi.h">CEF source file: /include/capi/views/cef_menu_button_capi.h (cef_menu_button_t)</see></para>
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/// </remarks>
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TCefMenuButtonRef = class(TCefLabelButtonRef, ICefMenuButton)
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protected
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/// <summary>
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/// Show a menu with contents |menu_model|. |screen_point| specifies the menu
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/// position in screen coordinates. |anchor_position| specifies how the menu
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/// will be anchored relative to |screen_point|. This function should be
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/// called from ICefMenuButtonDelegate.OnMenuButtonPressed().
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/// </summary>
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procedure ShowMenu(const menu_model: ICefMenuModel; const screen_point: TCefPoint; anchor_position: TCefMenuAnchorPosition);
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/// <summary>
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/// Show the menu for this button. Results in a call to
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/// ICefMenuButtonDelegate.OnMenuButtonPressed().
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/// </summary>
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procedure TriggerMenu;
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public
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/// <summary>
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/// Returns a ICefMenuButton instance using a PCefMenuButton data pointer.
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/// </summary>
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class function UnWrap(data: Pointer): ICefMenuButton;
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/// <summary>
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/// Create a new MenuButton. A |delegate| must be provided to call show_menu()
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/// when the button is clicked. |text| will be shown on the MenuButton and used
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/// as the default accessible name. If |with_frame| is true (1) the button will
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/// have a visible frame at all times, center alignment, additional padding and
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/// a default minimum size of 70x33 DIP. If |with_frame| is false (0) the button
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/// will only have a visible frame on hover/press, left alignment, less padding
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/// and no default minimum size.
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/// </summary>
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class function CreateMenuButton(const delegate: ICefMenuButtonDelegate; const text: ustring): ICefMenuButton;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFMiscFunctions;
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procedure TCefMenuButtonRef.ShowMenu(const menu_model : ICefMenuModel;
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const screen_point : TCefPoint;
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anchor_position : TCefMenuAnchorPosition);
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begin
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PCefMenuButton(FData)^.show_menu(PCefMenuButton(FData),
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CefGetData(menu_model),
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@screen_point,
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anchor_position);
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end;
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procedure TCefMenuButtonRef.TriggerMenu;
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begin
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PCefMenuButton(FData)^.trigger_menu(PCefMenuButton(FData));
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end;
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class function TCefMenuButtonRef.UnWrap(data: Pointer): ICefMenuButton;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefMenuButton
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else
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Result := nil;
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end;
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class function TCefMenuButtonRef.CreateMenuButton(const delegate : ICefMenuButtonDelegate;
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const text : ustring): ICefMenuButton;
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var
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TempText : TCefString;
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TempButton : PCefMenuButton;
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begin
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Result := nil;
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if (delegate <> nil) then
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begin
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TempText := CefString(text);
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TempButton := cef_menu_button_create(CefGetData(delegate), @TempText);
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if (TempButton <> nil) then
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Result := Create(TempButton) as ICefMenuButton;
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end;
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end;
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end.
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