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86 lines
2.8 KiB
ObjectPascal
86 lines
2.8 KiB
ObjectPascal
unit uCEFBoxLayout;
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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, uCEFLayout;
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type
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/// <summary>
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/// A Layout manager that arranges child views vertically or horizontally in a
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/// side-by-side fashion with spacing around and between the child views. The
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/// child views are always sized according to their preferred size. If the
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/// host's bounds provide insufficient space, child views will be clamped.
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/// Excess space will not be distributed. 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 cref="uCEFTypes|TCefBoxLayout">Implements TCefBoxLayout</see></para>
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/// <para><see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_box_layout_capi.h">CEF source file: /include/capi/views/cef_box_layout_capi.h (cef_box_layout_t)</see></para>
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/// </remarks>
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TCefBoxLayoutRef = class(TCefLayoutRef, ICefBoxLayout)
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protected
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/// <summary>
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/// Set the flex weight for the given |view|. Using the preferred size as the
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/// basis, free space along the main axis is distributed to views in the ratio
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/// of their flex weights. Similarly, if the views will overflow the parent,
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/// space is subtracted in these ratios. A flex of 0 means this view is not
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/// resized. Flex values must not be negative.
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/// </summary>
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procedure SetFlexForView(const view: ICefView; flex: Integer);
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/// <summary>
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/// Clears the flex for the given |view|, causing it to use the default flex
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/// specified via TCefBoxLayoutSettings.default_flex.
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/// </summary>
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procedure ClearFlexForView(const view: ICefView);
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public
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/// <summary>
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/// Returns a ICefBoxLayout instance using a PCefBoxLayout data pointer.
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/// </summary>
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class function UnWrap(data: Pointer): ICefBoxLayout;
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end;
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implementation
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uses
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uCEFMiscFunctions;
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procedure TCefBoxLayoutRef.SetFlexForView(const view: ICefView; flex: Integer);
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begin
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PCefBoxLayout(FData)^.set_flex_for_view(PCefBoxLayout(FData),
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CefGetData(view),
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ord(flex));
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end;
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procedure TCefBoxLayoutRef.ClearFlexForView(const view: ICefView);
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begin
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PCefBoxLayout(FData)^.clear_flex_for_view(PCefBoxLayout(FData),
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CefGetData(view));
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end;
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class function TCefBoxLayoutRef.UnWrap(data: Pointer): ICefBoxLayout;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefBoxLayout
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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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