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83 lines
2.1 KiB
ObjectPascal
83 lines
2.1 KiB
ObjectPascal
unit uCEFLayout;
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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;
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type
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/// <summary>
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/// A Layout handles the sizing of the children of a Panel according to
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/// implementation-specific heuristics. Methods must be called on the browser
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/// process UI thread unless otherwise 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_layout_capi.h">CEF source file: /include/capi/views/cef_layout_capi.h (cef_layout_t)</see></para>
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/// </remarks>
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TCefLayoutRef = class(TCefBaseRefCountedRef, ICefLayout)
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protected
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/// <summary>
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/// Returns this Layout as a BoxLayout or NULL if this is not a BoxLayout.
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/// </summary>
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function AsBoxLayout : ICefBoxLayout;
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/// <summary>
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/// Returns this Layout as a FillLayout or NULL if this is not a FillLayout.
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/// </summary>
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function AsFillLayout : ICefFillLayout;
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/// <summary>
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/// Returns true (1) if this Layout is valid.
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/// </summary>
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function IsValid : boolean;
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public
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/// <summary>
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/// Returns a ICefLayout instance using a PCefLayout data pointer.
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/// </summary>
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class function UnWrap(data: Pointer): ICefLayout;
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end;
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implementation
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uses
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uCEFLibFunctions, uCEFBoxLayout, uCEFFillLayout;
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function TCefLayoutRef.AsBoxLayout : ICefBoxLayout;
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begin
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Result := TCefBoxLayoutRef.UnWrap(PCefLayout(FData)^.as_box_layout(PCefLayout(FData)));
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end;
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function TCefLayoutRef.AsFillLayout : ICefFillLayout;
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begin
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Result := TCefFillLayoutRef.UnWrap(PCefLayout(FData)^.as_fill_layout(PCefLayout(FData)));
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end;
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function TCefLayoutRef.IsValid : boolean;
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begin
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Result := (PCefLayout(FData)^.is_valid(PCefLayout(FData)) <> 0);
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end;
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class function TCefLayoutRef.UnWrap(data: Pointer): ICefLayout;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefLayout
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else
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Result := nil;
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end;
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end.
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