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CEF4Delphi/source/uCEFLazarusOsrBrowserWindow.pas

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// ************************************************************************
// ***************************** 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 © 2021 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 uCEFLazarusOsrBrowserWindow;
{$mode objfpc}{$H+}
{$i cef.inc}
interface
uses
{$IFDEF FPC}
LResources,
{$ENDIF}
uCEFApplication, uCEFChromiumWindow, uCEFTypes, uCEFInterfaces, uCEFChromium,
uCEFLinkedWinControlBase, uCEFLazApplication, uCEFBufferPanel,
uCEFLazarusBrowserWindow, uCEFBitmapBitBuffer, uCEFMiscFunctions,
uCEFConstants, Forms, ExtCtrls, LCLType, Graphics, Controls, syncobjs,
LazLogger, Classes, sysutils, math;
type
TBrowserMouseEvent = procedure(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer;
var AHandled: Boolean) of Object;
{ TLazarusOsrBrowserWindow }
TLazarusOsrBrowserWindow = class(TBufferPanel)
private
FPopUpBitmap : TBitmap;
FPopUpRect : TRect;
FShowPopUp : boolean;
FResizing : boolean;
FPendingResize : boolean;
FResizeCS : syncobjs.TCriticalSection;
//FIMECS : TCriticalSection;
FDeviceBounds : TCefRectDynArray;
FSelectedRange : TCefRange;
FLastKeyDown: Word;
procedure AsyncInvalidate(Data: PtrInt);
procedure AsyncResize(Data: PtrInt);
procedure SyncIMERangeChanged;
procedure DoGetChromiumBeforePopup(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition;
userGesture: Boolean; const popupFeatures: TCefPopupFeatures;
var windowInfo: TCefWindowInfo; var client: ICefClient;
var settings: TCefBrowserSettings; var extra_info: ICefDictionaryValue;
var noJavascriptAccess: Boolean; var Result: Boolean);
procedure DoGetChromiumPopupShow(Sender: TObject;
const browser: ICefBrowser; AShow: Boolean);
procedure DoGetChromiumPopupSize(Sender: TObject;
const browser: ICefBrowser; const rect: PCefRect);
procedure DoGetChromiumTooltip(Sender: TObject;
const browser: ICefBrowser; var AText: ustring; out Result: Boolean);
procedure DoGetChromiumIMECompositionRangeChanged(Sender: TObject;
const browser: ICefBrowser; const selected_range: PCefRange;
character_boundsCount: NativeUInt; const character_bounds: PCefRect);
procedure DoGetChromiumCursorChange(Sender: TObject;
const browser: ICefBrowser; cursor_: TCefCursorHandle;
cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo;
var aResult: boolean);
procedure DoGetChromiumGetScreenInfo(Sender: TObject;
const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out
Result: Boolean);
procedure DoGetChromiumGetScreenPoint(Sender: TObject;
const browser: ICefBrowser; viewX, viewY: Integer; var screenX,
screenY: Integer; out Result: Boolean);
procedure DoGetChromiumViewRect(Sender: TObject;
const browser: ICefBrowser; var rect: TCefRect);
procedure DoChromiumPaint(Sender: TObject; const browser: ICefBrowser;
kind: TCefPaintElementType; dirtyRectsCount: NativeUInt;
const dirtyRects: PCefRectArray; const ABuffer: Pointer; AWidth,
AHeight: Integer);
private
FChromium : TLazChromium;
FOnBrowserClosed : TNotifyEvent;
FOnBrowserCreated : TNotifyEvent;
FOnMouseDown: TBrowserMouseEvent;
FOnMouseUp: TBrowserMouseEvent;
procedure DoCreateBrowserAfterContext(Sender: TObject);
protected
function GetChromium: TLazChromium;
function getModifiers(Shift: TShiftState): TCefEventFlags;
function getKeyModifiers(Shift: TShiftState): TCefEventFlags;
function GetButton(Button: TMouseButton): TCefMouseButtonType;
procedure DestroyHandle; override;
procedure RealizeBounds; override;
procedure DoEnter; override;
procedure DoExit; override;
procedure Click; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
procedure MouseEnter; override;
procedure MouseLeave; override;
function DoMouseWheel(Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint): Boolean; override;
(* Key input works only for windows.
*)
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
procedure UTF8KeyPress(var UTF8Key: TUTF8Char); override;
procedure KeyUp(var Key: Word; Shift: TShiftState); override;
{$IFDEF MSWINDOWS}
procedure DoOnIMECancelComposition; override;
procedure DoOnIMECommitText(const aText : ustring; const replacement_range : PCefRange; relative_cursor_pos : integer); override;
procedure DoOnIMESetComposition(const aText : ustring; const underlines : TCefCompositionUnderlineDynArray; const replacement_range, selection_range : TCefRange); override;
{$ENDIF}
procedure CaptureChanged; override;
procedure DoOnCreated(Sender: TObject);
procedure DoOnClosed(Sender: TObject);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure CreateHandle; override;
procedure CloseBrowser(aForceClose: boolean);
procedure WaitForBrowserClosed;
function IsClosed: boolean;
procedure LoadURL(aURL: ustring);
//
published
property Chromium : TLazChromium read GetChromium;
property OnBrowserCreated : TNotifyEvent read FOnBrowserCreated write FOnBrowserCreated;
property OnBrowserClosed : TNotifyEvent read FOnBrowserClosed write FOnBrowserClosed;
property OnMouseDown: TBrowserMouseEvent read FOnMouseDown write FOnMouseDown;
property OnMouseUp: TBrowserMouseEvent read FOnMouseUp write FOnMouseUp;
end;
{$IFDEF FPC}
procedure Register;
{$ENDIF}
implementation
{ TLazarusOsrBrowserWindow }
procedure TLazarusOsrBrowserWindow.AsyncInvalidate(Data: PtrInt);
begin
Invalidate;
end;
procedure TLazarusOsrBrowserWindow.AsyncResize(Data: PtrInt);
begin
try
FResizeCS.Acquire;
if FResizing then
FPendingResize := True
else
if BufferIsResized then
Chromium.Invalidate(PET_VIEW)
else
begin
FResizing := True;
Chromium.WasResized;
end;
finally
FResizeCS.Release;
end;
end;
procedure TLazarusOsrBrowserWindow.SyncIMERangeChanged;
begin
ChangeCompositionRange(FSelectedRange, FDeviceBounds);
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumBeforePopup(Sender: TObject;
const browser: ICefBrowser; const frame: ICefFrame; const targetUrl,
targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition;
userGesture: Boolean; const popupFeatures: TCefPopupFeatures;
var windowInfo: TCefWindowInfo; var client: ICefClient;
var settings: TCefBrowserSettings; var extra_info: ICefDictionaryValue;
var noJavascriptAccess: Boolean; var Result: Boolean);
begin
// For simplicity, this demo blocks all popup windows and new tabs
Result := (targetDisposition in [WOD_NEW_FOREGROUND_TAB, WOD_NEW_BACKGROUND_TAB, WOD_NEW_POPUP, WOD_NEW_WINDOW]);
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumPopupShow(Sender: TObject;
const browser: ICefBrowser; AShow: Boolean);
begin
if aShow then
FShowPopUp := True
else
begin
FShowPopUp := False;
FPopUpRect := rect(0, 0, 0, 0);
if (Chromium <> nil) then Chromium.Invalidate(PET_VIEW);
end;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumPopupSize(Sender: TObject;
const browser: ICefBrowser; const rect: PCefRect);
begin
LogicalToDevice(rect^, ScreenScale);
FPopUpRect.Left := rect^.x;
FPopUpRect.Top := rect^.y;
FPopUpRect.Right := rect^.x + rect^.width - 1;
FPopUpRect.Bottom := rect^.y + rect^.height - 1;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumTooltip(Sender: TObject;
const browser: ICefBrowser; var AText: ustring; out Result: Boolean);
begin
hint := aText;
ShowHint := (length(aText) > 0);
Result := True;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumIMECompositionRangeChanged(
Sender: TObject; const browser: ICefBrowser; const selected_range: PCefRange;
character_boundsCount: NativeUInt; const character_bounds: PCefRect);
var
TempPRect : PCefRect;
i : NativeUInt;
TempScale : single;
begin
// TChromium.OnIMECompositionRangeChanged is triggered in a different thread
// and all functions using a IMM context need to be executed in the same
// thread, in this case the main thread. We need to save the parameters and
// send a message to the form to execute Panel1.ChangeCompositionRange in
// the main thread.
if (FDeviceBounds <> nil) then
begin
Finalize(FDeviceBounds);
FDeviceBounds := nil;
end;
FSelectedRange := selected_range^;
if (character_boundsCount > 0) then
begin
SetLength(FDeviceBounds, character_boundsCount);
i := 0;
TempPRect := character_bounds;
TempScale := ScreenScale;
while (i < character_boundsCount) do
begin
FDeviceBounds[i] := TempPRect^;
LogicalToDevice(FDeviceBounds[i], TempScale);
inc(TempPRect);
inc(i);
end;
end;
TThread.Synchronize(nil, @SyncIMERangeChanged);
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumCursorChange(Sender: TObject;
const browser: ICefBrowser; cursor_: TCefCursorHandle;
cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo;
var aResult: boolean);
begin
Cursor := CefCursorToWindowsCursor(cursorType);
aResult := True;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumGetScreenInfo(Sender: TObject;
const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out
Result: Boolean);
var
TempRect : TCEFRect;
TempScale : single;
begin
TempScale := ScreenScale;
TempRect.x := 0;
TempRect.y := 0;
TempRect.width := DeviceToLogical(Width, TempScale);
TempRect.height := DeviceToLogical(Height, TempScale);
screenInfo.device_scale_factor := TempScale;
screenInfo.depth := 0;
screenInfo.depth_per_component := 0;
screenInfo.is_monochrome := Ord(False);
screenInfo.rect := TempRect;
screenInfo.available_rect := TempRect;
Result := True;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumGetScreenPoint(Sender: TObject;
const browser: ICefBrowser; viewX, viewY: Integer; var screenX,
screenY: Integer; out Result: Boolean);
var
TempScreenPt, TempViewPt : TPoint;
TempScale : single;
begin
TempScale := ScreenScale;
TempViewPt.x := LogicalToDevice(viewX, TempScale);
TempViewPt.y := LogicalToDevice(viewY, TempScale);
TempScreenPt := ClientToScreen(TempViewPt);
screenX := TempScreenPt.x;
screenY := TempScreenPt.y;
Result := True;
end;
procedure TLazarusOsrBrowserWindow.DoGetChromiumViewRect(Sender: TObject;
const browser: ICefBrowser; var rect: TCefRect);
var
TempScale : single;
begin
TempScale := ScreenScale;
rect.x := 0;
rect.y := 0;
rect.width := DeviceToLogical(Width, TempScale);
rect.height := DeviceToLogical(Height, TempScale);
end;
procedure TLazarusOsrBrowserWindow.DoChromiumPaint(Sender: TObject;
const browser: ICefBrowser; kind: TCefPaintElementType;
dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray;
const ABuffer: Pointer; AWidth, AHeight: Integer);
var
src, dst: PByte;
i, j, TempLineSize, TempSrcOffset, TempDstOffset, SrcStride : Integer;
n : NativeUInt;
TempWidth, TempHeight: integer;
TempBufferBits : Pointer;
TempForcedResize : boolean;
TempBitmap : TBitmap;
TempSrcRect : TRect;
{$IFDEF DARWIN}
s: PByte;
ls: integer;
{$ENDIF}
begin
try
FResizeCS.Acquire;
TempForcedResize := False;
if BeginBufferDraw then
begin
if (kind = PET_POPUP) then
begin
if (FPopUpBitmap = nil) or
(aWidth <> FPopUpBitmap.Width) or
(aHeight <> FPopUpBitmap.Height) then
begin
if (FPopUpBitmap <> nil) then FPopUpBitmap.Free;
FPopUpBitmap := TBitmap.Create;
FPopUpBitmap.PixelFormat := pf32bit;
FPopUpBitmap.HandleType := bmDIB;
FPopUpBitmap.Width := aWidth;
FPopUpBitmap.Height := aHeight;
end;
TempBitmap := FPopUpBitmap;
TempBitmap.BeginUpdate;
TempWidth := FPopUpBitmap.Width;
TempHeight := FPopUpBitmap.Height;
end
else
begin
TempForcedResize := UpdateBufferDimensions(aWidth, aHeight) or not(BufferIsResized(False));
TempBitmap := Buffer;
TempBitmap.BeginUpdate;
TempWidth := BufferWidth;
TempHeight := BufferHeight;
end;
SrcStride := aWidth * SizeOf(TRGBQuad);
n := 0;
while (n < dirtyRectsCount) do
begin
if (dirtyRects^[n].x >= 0) and (dirtyRects^[n].y >= 0) then
begin
TempLineSize := min(dirtyRects^[n].width, TempWidth - dirtyRects^[n].x) {$IFnDEF DARWIN}* SizeOf(TRGBQuad){$ENDIF};
if (TempLineSize > 0) then
begin
TempSrcOffset := ((dirtyRects^[n].y * aWidth) + dirtyRects^[n].x) * SizeOf(TRGBQuad);
TempDstOffset := (dirtyRects^[n].x * SizeOf(TRGBQuad));
src := @PByte(ABuffer)[TempSrcOffset];
i := 0;
j := min(dirtyRects^[n].height, TempHeight - dirtyRects^[n].y);
while (i < j) do
begin
TempBufferBits := TempBitmap.Scanline[dirtyRects^[n].y + i];
dst := @PByte(TempBufferBits)[TempDstOffset];
{$IFDEF DARWIN}
ls := TempLineSize;
s := src;
while ls > 0 do begin
PCardinal(dst)^ := (s[0] shl 24) or (s[1] shl 16) or (s[2] shl 8) or s[3];
inc(dst, 4);
inc(s, 4);
dec(ls);
end;
{$ELSE}
Move(src^, dst^, TempLineSize);
{$ENDIF}
Inc(src, SrcStride);
inc(i);
end;
end;
end;
inc(n);
end;
TempBitmap.EndUpdate;
if FShowPopup and (FPopUpBitmap <> nil) then
begin
TempSrcRect := Rect(0, 0,
min(FPopUpRect.Right - FPopUpRect.Left, FPopUpBitmap.Width),
min(FPopUpRect.Bottom - FPopUpRect.Top, FPopUpBitmap.Height));
BufferDraw(FPopUpBitmap, TempSrcRect, FPopUpRect);
end;
EndBufferDraw;
if HandleAllocated then
//PostMessage(Handle, CEF_PENDINGINVALIDATE, 0, 0);
Application.QueueAsyncCall(@AsyncInvalidate, 0);
if (kind = PET_VIEW) then
begin
if (TempForcedResize or FPendingResize) and
HandleAllocated then
Application.QueueAsyncCall(@AsyncResize, 0);
//PostMessage(Handle, CEF_PENDINGRESIZE, 0, 0);
FResizing := False;
FPendingResize := False;
end;
end;
finally
FResizeCS.Release;
end;
end;
function TLazarusOsrBrowserWindow.GetChromium: TLazChromium;
begin
Result := FChromium;
end;
function TLazarusOsrBrowserWindow.getModifiers(Shift: TShiftState
): TCefEventFlags;
begin
Result := EVENTFLAG_NONE;
if (ssShift in Shift) then Result := Result or EVENTFLAG_SHIFT_DOWN;
if (ssAlt in Shift) then Result := Result or EVENTFLAG_ALT_DOWN;
if (ssCtrl in Shift) then Result := Result or EVENTFLAG_CONTROL_DOWN;
if (ssLeft in Shift) then Result := Result or EVENTFLAG_LEFT_MOUSE_BUTTON;
if (ssRight in Shift) then Result := Result or EVENTFLAG_RIGHT_MOUSE_BUTTON;
if (ssMiddle in Shift) then Result := Result or EVENTFLAG_MIDDLE_MOUSE_BUTTON;
end;
function TLazarusOsrBrowserWindow.getKeyModifiers(Shift: TShiftState): TCefEventFlags;
begin
Result := EVENTFLAG_NONE;
if (ssShift in Shift) then Result := Result or EVENTFLAG_SHIFT_DOWN;
if (ssAlt in Shift) then Result := Result or EVENTFLAG_ALT_DOWN;
if (ssCtrl in Shift) then Result := Result or EVENTFLAG_CONTROL_DOWN;
if (ssNum in Shift) then Result := Result or EVENTFLAG_NUM_LOCK_ON;
if (ssCaps in Shift) then Result := Result or EVENTFLAG_CAPS_LOCK_ON;
end;
function TLazarusOsrBrowserWindow.GetButton(Button: TMouseButton
): TCefMouseButtonType;
begin
case Button of
TMouseButton.mbRight : Result := MBT_RIGHT;
TMouseButton.mbMiddle : Result := MBT_MIDDLE;
else Result := MBT_LEFT;
end;
end;
procedure TLazarusOsrBrowserWindow.DoCreateBrowserAfterContext(Sender: TObject);
begin
FChromium.CreateBrowser(nil);
end;
procedure TLazarusOsrBrowserWindow.CreateHandle;
begin
inherited CreateHandle;
if not (csDesigning in ComponentState) then begin
if GlobalCEFApp is TCefLazApplication then
TCefLazApplication(GlobalCEFApp).AddContextInitializedHandler(@DoCreateBrowserAfterContext)
else
DoCreateBrowserAfterContext(nil);
end;
end;
procedure TLazarusOsrBrowserWindow.DestroyHandle;
begin
if (GlobalCEFApp = nil) or
(not FChromium.HasBrowser) or
(csDesigning in ComponentState)
then begin
inherited DestroyHandle;
exit;
end;
FChromium.CloseBrowser(True);
inherited DestroyHandle;
end;
procedure TLazarusOsrBrowserWindow.RealizeBounds;
begin
inherited RealizeBounds;
Chromium.NotifyMoveOrResizeStarted;
AsyncResize(0);
end;
procedure TLazarusOsrBrowserWindow.DoEnter;
begin
inherited DoEnter;
Chromium.SendFocusEvent(True);
end;
procedure TLazarusOsrBrowserWindow.DoExit;
begin
inherited DoExit;
Chromium.SendFocusEvent(False);
end;
procedure TLazarusOsrBrowserWindow.Click;
begin
inherited Click;
SetFocus;
end;
procedure TLazarusOsrBrowserWindow.MouseDown(Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
LastClickCount: integer;
IsHandled: Boolean;
begin
inherited MouseDown(Button, Shift, X, Y);
IsHandled := False;
if FOnMouseDown <> nil then
FOnMouseDown(Self, Button, Shift, X, Y, IsHandled);
if IsHandled then
exit;
SetFocus;
LastClickCount := 1;
if ssDouble in Shift then LastClickCount := 2
else if ssTriple in Shift then LastClickCount := 3
else if ssQuad in Shift then LastClickCount := 4;
TempEvent.x := X;
TempEvent.y := Y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, ScreenScale);
Chromium.SendMouseClickEvent(@TempEvent, GetButton(Button), False, LastClickCount);
end;
procedure TLazarusOsrBrowserWindow.MouseUp(Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
LastClickCount: integer;
IsHandled: Boolean;
begin
inherited MouseUp(Button, Shift, X, Y);
IsHandled := False;
if FOnMouseDown <> nil then
FOnMouseDown(Self, Button, Shift, X, Y, IsHandled);
if IsHandled then
exit;
LastClickCount := 1;
if ssDouble in Shift then LastClickCount := 2
else if ssTriple in Shift then LastClickCount := 3
else if ssQuad in Shift then LastClickCount := 4;
TempEvent.x := X;
TempEvent.y := Y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, ScreenScale);
Chromium.SendMouseClickEvent(@TempEvent, GetButton(Button), True, LastClickCount);
end;
procedure TLazarusOsrBrowserWindow.MouseMove(Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
begin
inherited MouseMove(Shift, X, Y);
TempEvent.x := x;
TempEvent.y := y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, ScreenScale);
Chromium.SendMouseMoveEvent(@TempEvent, False);
end;
procedure TLazarusOsrBrowserWindow.MouseEnter;
var
TempEvent : TCefMouseEvent;
TempPoint : TPoint;
begin
inherited MouseEnter;
TempPoint := ScreenToClient(mouse.CursorPos);
TempEvent.x := TempPoint.x;
TempEvent.y := TempPoint.y;
TempEvent.modifiers := EVENTFLAG_NONE;
DeviceToLogical(TempEvent, ScreenScale);
Chromium.SendMouseMoveEvent(@TempEvent, False);
end;
procedure TLazarusOsrBrowserWindow.MouseLeave;
var
TempEvent : TCefMouseEvent;
TempPoint : TPoint;
TempTime : integer;
begin
inherited MouseLeave;
TempPoint := ScreenToClient(mouse.CursorPos);
TempPoint := ScreenToclient(TempPoint);
TempEvent.x := TempPoint.x;
TempEvent.y := TempPoint.y;
{$IFDEF MSWINDOWS}
TempEvent.modifiers := GetCefMouseModifiers;
{$ELSE}
TempEvent.modifiers := EVENTFLAG_NONE;
{$ENDIF}
DeviceToLogical(TempEvent, ScreenScale);
Chromium.SendMouseMoveEvent(@TempEvent, True);
end;
function TLazarusOsrBrowserWindow.DoMouseWheel(Shift: TShiftState;
WheelDelta: Integer; MousePos: TPoint): Boolean;
var
TempEvent : TCefMouseEvent;
begin
Result := inherited DoMouseWheel(Shift, WheelDelta, MousePos);
TempEvent.x := MousePos.x;
TempEvent.y := MousePos.y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, ScreenScale);
{$IFDEF MSWINDOWS}
if CefIsKeyDown(VK_SHIFT) then
Chromium.SendMouseWheelEvent(@TempEvent, WheelDelta, 0)
else
{$ENDIF}
Chromium.SendMouseWheelEvent(@TempEvent, 0, WheelDelta);
end;
procedure TLazarusOsrBrowserWindow.KeyDown(var Key: Word; Shift: TShiftState);
var
TempKeyEvent : TCefKeyEvent;
begin
FLastKeyDown := Key;
if (Key <> 0) and (Chromium <> nil) then
begin
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
TempKeyEvent.modifiers := getModifiers(Shift);
TempKeyEvent.windows_key_code := Key;
TempKeyEvent.native_key_code := 0;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium.SendKeyEvent(@TempKeyEvent);
if (Key in [VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_TAB]) then Key := 0;
end;
inherited KeyDown(Key, Shift);
end;
procedure TLazarusOsrBrowserWindow.UTF8KeyPress(var UTF8Key: TUTF8Char);
var
TempKeyEvent : TCefKeyEvent;
TempString : UnicodeString;
begin
if Focused then
begin
TempString := UTF8Decode(UTF8Key);
if (length(TempString) > 0) then
begin
TempKeyEvent.kind := KEYEVENT_CHAR;
{$IFDEF MSWINDOWS}
TempKeyEvent.modifiers := GetCefKeyboardModifiers(WParam(TempString[1]), 0);
TempKeyEvent.windows_key_code := ord(TempString[1]);
{$ELSE}
TempKeyEvent.modifiers := getKeyModifiers(GetKeyShiftState);
TempKeyEvent.windows_key_code := FLastKeyDown;
{$ENDIF}
TempKeyEvent.native_key_code := 0;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := TempString[1];
TempKeyEvent.unmodified_character := TempString[1];
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium.SendKeyEvent(@TempKeyEvent);
end;
end;
inherited UTF8KeyPress(UTF8Key);
end;
procedure TLazarusOsrBrowserWindow.KeyUp(var Key: Word; Shift: TShiftState);
var
TempKeyEvent : TCefKeyEvent;
begin
if (Key <> 0) and (Chromium <> nil) then
begin
TempKeyEvent.kind := KEYEVENT_KEYUP;
TempKeyEvent.modifiers := getModifiers(Shift);
TempKeyEvent.windows_key_code := Key;
TempKeyEvent.native_key_code := 0;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium.SendKeyEvent(@TempKeyEvent);
end;
inherited KeyUp(Key, Shift);
end;
{$IFDEF MSWINDOWS}
procedure TLazarusOsrBrowserWindow.DoOnIMECancelComposition;
begin
inherited DoOnIMECancelComposition;
Chromium.IMECancelComposition;
end;
procedure TLazarusOsrBrowserWindow.DoOnIMECommitText(const aText: ustring;
const replacement_range: PCefRange; relative_cursor_pos: integer);
begin
inherited DoOnIMECommitText(aText, replacement_range, relative_cursor_pos);
Chromium.IMECommitText(aText, replacement_range, relative_cursor_pos);;
end;
procedure TLazarusOsrBrowserWindow.DoOnIMESetComposition(const aText: ustring;
const underlines: TCefCompositionUnderlineDynArray; const replacement_range,
selection_range: TCefRange);
begin
inherited DoOnIMESetComposition(aText, underlines, replacement_range, selection_range);
Chromium.IMESetComposition(aText, underlines, @replacement_range, @selection_range);
end;
{$ENDIF}
procedure TLazarusOsrBrowserWindow.CaptureChanged;
begin
inherited CaptureChanged;
if (Chromium <> nil) then Chromium.SendCaptureLostEvent;
end;
procedure TLazarusOsrBrowserWindow.DoOnCreated(Sender: TObject);
begin
if Assigned(FOnBrowserCreated) then
FOnBrowserCreated(Self);
end;
procedure TLazarusOsrBrowserWindow.DoOnClosed(Sender: TObject);
begin
if (not(csDestroying in ComponentState)) and
Assigned(FOnBrowserClosed)
then
FOnBrowserClosed(Self);
end;
constructor TLazarusOsrBrowserWindow.Create(AOwner: TComponent);
begin
FResizeCS := TCriticalSection.Create;
FDeviceBounds := nil;
FSelectedRange.from := 0;
FSelectedRange.to_ := 0;
FChromium := TLazChromium.Create(Self);
FChromium.OnBrowserClosed := {$IFDEF FPC}@{$ENDIF}DoOnClosed;
FChromium.OnBrowserCreated := {$IFDEF FPC}@{$ENDIF}DoOnCreated;
FChromium.OnPaint := {$IFDEF FPC}@{$ENDIF}DoChromiumPaint;
FChromium.OnGetViewRect := {$IFDEF FPC}@{$ENDIF}DoGetChromiumViewRect;
FChromium.OnCursorChange := {$IFDEF FPC}@{$ENDIF}DoGetChromiumCursorChange;
FChromium.OnGetScreenPoint := {$IFDEF FPC}@{$ENDIF}DoGetChromiumGetScreenPoint;
FChromium.OnGetScreenInfo := {$IFDEF FPC}@{$ENDIF}DoGetChromiumGetScreenInfo;
FChromium.OnPopupShow := {$IFDEF FPC}@{$ENDIF}DoGetChromiumPopupShow;
FChromium.OnPopupSize := {$IFDEF FPC}@{$ENDIF}DoGetChromiumPopupSize;
FChromium.OnTooltip := {$IFDEF FPC}@{$ENDIF}DoGetChromiumTooltip;
FChromium.OnBeforePopup := {$IFDEF FPC}@{$ENDIF}DoGetChromiumBeforePopup;
FChromium.OnIMECompositionRangeChanged := @DoGetChromiumIMECompositionRangeChanged;
inherited Create(AOwner);
CopyOriginalBuffer := true;
end;
destructor TLazarusOsrBrowserWindow.Destroy;
begin
inherited Destroy;
FreeAndNil(FResizeCS);
if (FDeviceBounds <> nil) then
begin
Finalize(FDeviceBounds);
FDeviceBounds := nil;
end;
end;
procedure TLazarusOsrBrowserWindow.CloseBrowser(aForceClose: boolean);
begin
FChromium.CloseBrowser(aForceClose);
end;
procedure TLazarusOsrBrowserWindow.WaitForBrowserClosed;
begin
if not FChromium.HasBrowser then
exit;
FChromium.CloseBrowser(True);
while FChromium.HasBrowser do begin
Application.ProcessMessages;
if GlobalCEFApp.ExternalMessagePump then
GlobalCEFApp.DoMessageLoopWork;
sleep(5);
end;
// TODO : sent closed?
end;
function TLazarusOsrBrowserWindow.IsClosed: boolean;
begin
Result := not FChromium.HasBrowser;
end;
procedure TLazarusOsrBrowserWindow.LoadURL(aURL: ustring);
begin
FChromium.LoadURL(aURL);
end;
{$IFDEF FPC}
procedure Register;
begin
// {$I res/tlazarusosrbrowserwindow.lrs}
RegisterComponents('Chromium', [TLazarusOsrBrowserWindow]);
end;
{$ENDIF}
end.
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