CEF4Delphi/source/uCEFImage.pas
salvadordf ca8bc9dff4 Added cef4delphi.chm help file
Added the PDS file to extract the HTML Help files using PasDoc
Added more XML documentation
Fixed some XML errors.
Removed the license copy from the pas units.
Updated the LICENSE.md file
2023-08-09 19:38:57 +02:00

133 lines
4.9 KiB
ObjectPascal

unit uCEFImage;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$I cef.inc}
{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
interface
uses
{$IFDEF DELPHI16_UP}
{$IFDEF MSWINDOWS}WinApi.Windows,{$ENDIF}
{$ELSE}
{$IFDEF MSWINDOWS}Windows,{$ENDIF}
{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefImageRef = class(TCefBaseRefCountedRef, ICefImage)
protected
function IsEmpty: Boolean;
function IsSame(const that: ICefImage): Boolean;
function AddBitmap(scaleFactor: Single; pixelWidth, pixelHeight: Integer; colorType: TCefColorType; alphaType: TCefAlphaType; const pixelData: Pointer; pixelDataSize: NativeUInt): Boolean;
function AddPng(scaleFactor: Single; const pngData: Pointer; pngDataSize: NativeUInt): Boolean;
function AddJpeg(scaleFactor: Single; const jpegData: Pointer; jpegDataSize: NativeUInt): Boolean;
function GetWidth: NativeUInt;
function GetHeight: NativeUInt;
function HasRepresentation(scaleFactor: Single): Boolean;
function RemoveRepresentation(scaleFactor: Single): Boolean;
function GetRepresentationInfo(scaleFactor: Single; var actualScaleFactor: Single; var pixelWidth, pixelHeight: Integer): Boolean;
function GetAsBitmap(scaleFactor: Single; colorType: TCefColorType; alphaType: TCefAlphaType; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
function GetAsPng(scaleFactor: Single; withTransparency: Boolean; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
function GetAsJpeg(scaleFactor: Single; quality: Integer; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
public
class function UnWrap(data: Pointer): ICefImage;
class function New: ICefImage;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFBinaryValue;
function TCefImageRef.AddBitmap(scaleFactor : Single;
pixelWidth : Integer;
pixelHeight : Integer;
colorType : TCefColorType;
alphaType : TCefAlphaType;
const pixelData : Pointer;
pixelDataSize : NativeUInt): Boolean;
begin
Result := PCefImage(FData)^.add_bitmap(FData, scaleFactor, pixelWidth, pixelHeight, colorType, alphaType, pixelData, pixelDataSize) <> 0;
end;
function TCefImageRef.AddJpeg(scaleFactor: Single; const jpegData: Pointer; jpegDataSize: NativeUInt): Boolean;
begin
Result := PCefImage(FData)^.add_jpeg(FData, scaleFactor, jpegData, jpegDataSize) <> 0;
end;
function TCefImageRef.AddPng(scaleFactor: Single; const pngData: Pointer; pngDataSize: NativeUInt): Boolean;
begin
Result := PCefImage(FData)^.add_png(FData, scaleFactor, pngData, pngDataSize) <> 0;
end;
function TCefImageRef.GetAsBitmap(scaleFactor: Single; colorType: TCefColorType; alphaType: TCefAlphaType; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
begin
Result := TCefBinaryValueRef.UnWrap(PCefImage(FData)^.get_as_bitmap(FData, scaleFactor, colorType, alphaType, @pixelWidth, @pixelHeight));
end;
function TCefImageRef.GetAsJpeg(scaleFactor: Single; quality: Integer; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
begin
Result := TCefBinaryValueRef.UnWrap(PCefImage(FData)^.get_as_jpeg(FData, scaleFactor, quality, @pixelWidth, @pixelHeight));
end;
function TCefImageRef.GetAsPng(scaleFactor: Single; withTransparency: Boolean; var pixelWidth, pixelHeight: Integer): ICefBinaryValue;
begin
Result := TCefBinaryValueRef.UnWrap(PCefImage(FData)^.get_as_png(FData, scaleFactor, Ord(withTransparency), @pixelWidth, @pixelHeight));
end;
function TCefImageRef.GetHeight: NativeUInt;
begin
Result := PCefImage(FData)^.get_height(FData);
end;
function TCefImageRef.GetRepresentationInfo(scaleFactor: Single; var actualScaleFactor: Single; var pixelWidth, pixelHeight: Integer): Boolean;
begin
Result := PCefImage(FData)^.get_representation_info(FData, scaleFactor, @actualScaleFactor, @pixelWidth, @pixelHeight) <> 0;
end;
function TCefImageRef.GetWidth: NativeUInt;
begin
Result := PCefImage(FData)^.get_width(FData);
end;
function TCefImageRef.HasRepresentation(scaleFactor: Single): Boolean;
begin
Result := PCefImage(FData)^.has_representation(FData, scaleFactor) <> 0;
end;
function TCefImageRef.IsEmpty: Boolean;
begin
Result := PCefImage(FData)^.is_empty(FData) <> 0;
end;
function TCefImageRef.IsSame(const that: ICefImage): Boolean;
begin
Result := PCefImage(FData)^.is_same(FData, CefGetData(that)) <> 0;
end;
class function TCefImageRef.New: ICefImage;
begin
Result := UnWrap(cef_image_create());
end;
function TCefImageRef.RemoveRepresentation(scaleFactor: Single): Boolean;
begin
Result := PCefImage(FData)^.remove_representation(FData, scaleFactor) <> 0;
end;
class function TCefImageRef.UnWrap(data: Pointer): ICefImage;
begin
if (data <> nil) then
Result := Create(data) as ICefImage
else
Result := nil;
end;
end.