mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-24 08:02:15 +02:00
310 lines
10 KiB
ObjectPascal
310 lines
10 KiB
ObjectPascal
unit uCEFDisplay;
|
|
|
|
{$IFDEF FPC}
|
|
{$MODE OBJFPC}{$H+}
|
|
{$ENDIF}
|
|
|
|
{$I cef.inc}
|
|
|
|
{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
|
|
{$MINENUMSIZE 4}
|
|
|
|
interface
|
|
|
|
uses
|
|
{$IFDEF DELPHI16_UP}
|
|
System.Classes, System.SysUtils, System.Types,
|
|
{$ELSE}
|
|
Classes, SysUtils, Types,
|
|
{$ENDIF}
|
|
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
|
|
|
|
type
|
|
/// <summary>
|
|
/// This class typically, but not always, corresponds to a physical display
|
|
/// connected to the system. A fake Display may exist on a headless system, or a
|
|
/// Display may correspond to a remote, virtual display. All size and position
|
|
/// values are in density independent pixel (DIP) coordinates unless otherwise
|
|
/// indicated. Methods must be called on the browser process UI thread unless
|
|
/// otherwise indicated.
|
|
/// </summary>
|
|
/// <remarks>
|
|
/// <para><see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_display_capi.h">CEF source file: /include/capi/views/cef_display_capi.h (cef_display_t)</see></para>
|
|
/// </remarks>
|
|
TCefDisplayRef = class(TCefBaseRefCountedRef, ICefDisplay)
|
|
protected
|
|
/// <summary>
|
|
/// Returns the unique identifier for this Display.
|
|
/// </summary>
|
|
function GetID : int64;
|
|
/// <summary>
|
|
/// Returns this Display's device pixel scale factor. This specifies how much
|
|
/// the UI should be scaled when the actual output has more pixels than
|
|
/// standard displays (which is around 100~120dpi). The potential return
|
|
/// values differ by platform.
|
|
/// </summary>
|
|
function GetDeviceScaleFactor : Single;
|
|
/// <summary>
|
|
/// Convert |point| from DIP coordinates to pixel coordinates using this
|
|
/// Display's device scale factor.
|
|
/// </summary>
|
|
procedure ConvertPointToPixels(var point: TCefPoint);
|
|
/// <summary>
|
|
/// Convert |point| from pixel coordinates to DIP coordinates using this
|
|
/// Display's device scale factor.
|
|
/// </summary>
|
|
procedure ConvertPointFromPixels(var point: TCefPoint);
|
|
/// <summary>
|
|
/// Returns this Display's bounds in DIP screen coordinates. This is the full
|
|
/// size of the display.
|
|
/// </summary>
|
|
function GetBounds : TCefRect;
|
|
/// <summary>
|
|
/// Returns this Display's work area in DIP screen coordinates. This excludes
|
|
/// areas of the display that are occupied with window manager toolbars, etc.
|
|
/// </summary>
|
|
function GetWorkArea : TCefRect;
|
|
/// <summary>
|
|
/// Returns this Display's rotation in degrees.
|
|
/// </summary>
|
|
function GetRotation : Integer;
|
|
|
|
public
|
|
/// <summary>
|
|
/// Returns a ICefDisplay instance using a PCefDisplay data pointer.
|
|
/// </summary>
|
|
class function UnWrap(data: Pointer): ICefDisplay;
|
|
/// <summary>
|
|
/// Returns the primary Display.
|
|
/// </summary>
|
|
class function Primary: ICefDisplay;
|
|
/// <summary>
|
|
/// Returns the Display nearest |point|. Set |input_pixel_coords| to true (1) if
|
|
/// |point| is in pixel screen coordinates instead of DIP screen coordinates.
|
|
/// </summary>
|
|
class function NearestPoint(const point: TCefPoint; input_pixel_coords: boolean): ICefDisplay;
|
|
/// <summary>
|
|
/// Returns the Display that most closely intersects |bounds|. Set
|
|
/// |input_pixel_coords| to true (1) if |bounds| is in pixel screen coordinates
|
|
/// instead of DIP screen coordinates.
|
|
/// </summary>
|
|
class function MatchingBounds(const bounds: TCefRect; input_pixel_coords: boolean): ICefDisplay;
|
|
/// <summary>
|
|
/// Returns the total number of Displays. Mirrored displays are excluded; this
|
|
/// function is intended to return the number of distinct, usable displays.
|
|
/// </summary>
|
|
class function GetCount: NativeUInt;
|
|
/// <summary>
|
|
/// Returns all Displays. Mirrored displays are excluded; this function is
|
|
/// intended to return distinct, usable displays.
|
|
/// </summary>
|
|
class function GetAlls(var aDisplayArray : TCefDisplayArray) : boolean;
|
|
/// <summary>
|
|
/// Convert |point| from DIP screen coordinates to pixel screen coordinates.
|
|
/// This function is only used on Windows.
|
|
/// </summary>
|
|
class function ScreenPointToPixels(const aScreenPoint : TPoint) : TPoint;
|
|
/// <summary>
|
|
/// Convert |point| from pixel screen coordinates to DIP screen coordinates.
|
|
/// This function is only used on Windows.
|
|
/// </summary>
|
|
class function ScreenPointFromPixels(const aPixelsPoint : TPoint) : TPoint;
|
|
/// <summary>
|
|
/// Convert |rect| from DIP screen coordinates to pixel screen coordinates. This
|
|
/// function is only used on Windows.
|
|
/// </summary>
|
|
class function ScreenRectToPixels(const aScreenRect : TRect) : TRect;
|
|
/// <summary>
|
|
/// Convert |rect| from pixel screen coordinates to DIP screen coordinates. This
|
|
/// function is only used on Windows.
|
|
/// </summary>
|
|
class function ScreenRectFromPixels(const aPixelsRect : TRect) : TRect;
|
|
end;
|
|
|
|
implementation
|
|
|
|
uses
|
|
uCEFLibFunctions, uCEFApplicationCore;
|
|
|
|
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
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
Result := UnWrap(cef_display_get_primary())
|
|
else
|
|
Result := nil;
|
|
end;
|
|
|
|
class function TCefDisplayRef.NearestPoint(const point: TCefPoint; input_pixel_coords: boolean): ICefDisplay;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
Result := UnWrap(cef_display_get_nearest_point(@point, ord(input_pixel_coords)))
|
|
else
|
|
Result := nil;
|
|
end;
|
|
|
|
class function TCefDisplayRef.MatchingBounds(const bounds: TCefRect; input_pixel_coords: boolean): ICefDisplay;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
Result := UnWrap(cef_display_get_matching_bounds(@bounds, ord(input_pixel_coords)))
|
|
else
|
|
Result := nil;
|
|
end;
|
|
|
|
class function TCefDisplayRef.GetCount: NativeUInt;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
Result := cef_display_get_count()
|
|
else
|
|
Result := 0;
|
|
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;
|
|
if (GlobalCEFApp = nil) or not(GlobalCEFApp.LibLoaded) then
|
|
exit;
|
|
|
|
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;
|
|
|
|
class function TCefDisplayRef.ScreenPointToPixels(const aScreenPoint : TPoint) : TPoint;
|
|
var
|
|
TempScreenPt, TempPixelsPt : TCefPoint;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
begin
|
|
TempScreenPt.x := aScreenPoint.X;
|
|
TempScreenPt.y := aScreenPoint.Y;
|
|
TempPixelsPt := cef_display_convert_screen_point_to_pixels(@TempScreenPt);
|
|
Result.X := TempPixelsPt.x;
|
|
Result.Y := TempPixelsPt.y;
|
|
end
|
|
else
|
|
Result := aScreenPoint;
|
|
end;
|
|
|
|
class function TCefDisplayRef.ScreenPointFromPixels(const aPixelsPoint : TPoint) : TPoint;
|
|
var
|
|
TempScreenPt, TempPixelsPt : TCefPoint;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
begin
|
|
TempPixelsPt.x := aPixelsPoint.X;
|
|
TempPixelsPt.y := aPixelsPoint.Y;
|
|
TempScreenPt := cef_display_convert_screen_point_from_pixels(@TempPixelsPt);
|
|
Result.X := TempScreenPt.x;
|
|
Result.Y := TempScreenPt.y;
|
|
end
|
|
else
|
|
Result := aPixelsPoint;
|
|
end;
|
|
|
|
class function TCefDisplayRef.ScreenRectToPixels(const aScreenRect : TRect) : TRect;
|
|
var
|
|
TempScreenRc, TempPixelsRc : TCefRect;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
begin
|
|
TempScreenRc.x := aScreenRect.Left;
|
|
TempScreenRc.y := aScreenRect.Top;
|
|
TempPixelsRc := cef_display_convert_screen_rect_to_pixels(@TempScreenRc);
|
|
Result.Left := TempPixelsRc.x;
|
|
Result.Top := TempPixelsRc.y;
|
|
Result.Right := TempPixelsRc.x + TempPixelsRc.Width - 1;
|
|
Result.Bottom := TempPixelsRc.y + TempPixelsRc.Height - 1;
|
|
end
|
|
else
|
|
Result := aScreenRect;
|
|
end;
|
|
|
|
class function TCefDisplayRef.ScreenRectFromPixels(const aPixelsRect : TRect) : TRect;
|
|
var
|
|
TempScreenRc, TempPixelsRc : TCefRect;
|
|
begin
|
|
if assigned(GlobalCEFApp) and GlobalCEFApp.LibLoaded then
|
|
begin
|
|
TempPixelsRc.x := aPixelsRect.Left;
|
|
TempPixelsRc.y := aPixelsRect.Top;
|
|
TempScreenRc := cef_display_convert_screen_rect_from_pixels(@TempPixelsRc);
|
|
Result.Left := TempScreenRc.x;
|
|
Result.Top := TempScreenRc.y;
|
|
Result.Right := TempScreenRc.x + TempScreenRc.Width - 1;
|
|
Result.Bottom := TempScreenRc.y + TempScreenRc.Height - 1;
|
|
end
|
|
else
|
|
Result := aPixelsRect;
|
|
end;
|
|
|
|
end.
|