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CEF4Delphi/source/uCEFDisplay.pas
Salvador Díaz Fau ee831e85bd Update to CEF 81.2.25
- Work in progress : Added many more units, classes and types to support the Views Framewrok.
2020-04-29 19:14:44 +02:00

182 lines
5.2 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright © 2020 Salvador Diaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFDisplay;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
System.Classes, System.SysUtils,
{$ELSE}
Classes, SysUtils,
{$ENDIF}
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TCefDisplayRef = class(TCefBaseRefCountedRef, ICefDisplay)
protected
function GetID : int64;
function GetDeviceScaleFactor : Single;
procedure ConvertPointToPixels(var point: TCefPoint);
procedure ConvertPointFromPixels(var point: TCefPoint);
function GetBounds : TCefRect;
function GetWorkArea : TCefRect;
function GetRotation : Integer;
public
class function UnWrap(data: Pointer): ICefDisplay;
class function Primary: ICefDisplay;
class function NearestPoint(const point: TCefPoint; input_pixel_coords: boolean): ICefDisplay;
class function MatchingBounds(const bounds: TCefRect; input_pixel_coords: boolean): ICefDisplay;
class function GetCount: NativeUInt;
class function GetAlls(var aDisplayArray : TCefDisplayArray) : boolean;
end;
implementation
uses
uCEFLibFunctions;
function TCefDisplayRef.GetID : int64;
begin
Result := PCefDisplay(FData)^.get_id(PCefDisplay(FData));
end;
function TCefDisplayRef.GetDeviceScaleFactor : Single;
begin
Result := PCefDisplay(FData)^.get_device_scale_factor(PCefDisplay(FData));
end;
procedure TCefDisplayRef.ConvertPointToPixels(var point: TCefPoint);
begin
PCefDisplay(FData)^.convert_point_to_pixels(PCefDisplay(FData), @point);
end;
procedure TCefDisplayRef.ConvertPointFromPixels(var point: TCefPoint);
begin
PCefDisplay(FData)^.convert_point_from_pixels(PCefDisplay(FData), @point);
end;
function TCefDisplayRef.GetBounds : TCefRect;
begin
Result := PCefDisplay(FData)^.get_bounds(PCefDisplay(FData));
end;
function TCefDisplayRef.GetWorkArea : TCefRect;
begin
Result := PCefDisplay(FData)^.get_work_area(PCefDisplay(FData));
end;
function TCefDisplayRef.GetRotation : Integer;
begin
Result := PCefDisplay(FData)^.get_rotation(PCefDisplay(FData));
end;
class function TCefDisplayRef.UnWrap(data: Pointer): ICefDisplay;
begin
if (data <> nil) then
Result := Create(data) as ICefDisplay
else
Result := nil;
end;
class function TCefDisplayRef.Primary: ICefDisplay;
begin
Result := UnWrap(cef_display_get_primary());
end;
class function TCefDisplayRef.NearestPoint(const point: TCefPoint; input_pixel_coords: boolean): ICefDisplay;
begin
Result := UnWrap(cef_display_get_nearest_point(@point, ord(input_pixel_coords)));
end;
class function TCefDisplayRef.MatchingBounds(const bounds: TCefRect; input_pixel_coords: boolean): ICefDisplay;
begin
Result := UnWrap(cef_display_get_matching_bounds(@bounds, ord(input_pixel_coords)));
end;
class function TCefDisplayRef.GetCount: NativeUInt;
begin
Result := cef_display_get_count();
end;
class function TCefDisplayRef.GetAlls(var aDisplayArray : TCefDisplayArray) : boolean;
type
TDisplayArray = array of PCefDisplay;
var
i, displaysCount: NativeUInt;
displays: PPCefDisplay;
TempSize : integer;
begin
Result := False;
displaysCount := GetCount;
if (displaysCount > 0) then
try
TempSize := SizeOf(TCefDisplay) * displaysCount;
GetMem(displays, TempSize);
FillChar(displays, TempSize, 0);
cef_display_get_alls(@displaysCount, displays);
SetLength(aDisplayArray, displaysCount);
i := 0;
while (i < displaysCount) do
begin
aDisplayArray[i] := TCefDisplayRef.UnWrap(TDisplayArray(displays)[i]);
inc(i);
end;
Result := True;
finally
FreeMem(displays);
end;
end;
end.