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CEF4Delphi/demos/Delphi_FMX/FMXExternalPumpBrowser/uFMXExternalPumpBrowser.pas
Salvador Díaz Fau fd1e936198 Update to CEF 79.0.10 
- Removed CEFSentinel from some demos because it's no longer necessary.
- Updated copyright year.
2020-01-01 12:48:10 +01:00

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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 © 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 uFMXExternalPumpBrowser;
{$I cef.inc}
interface
uses
{$IFDEF MSWINDOWS}
Winapi.Messages, Winapi.Windows,
{$ENDIF}
System.Types, System.UITypes, System.Classes, System.SyncObjs,
FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs,
FMX.Edit, FMX.StdCtrls, FMX.Controls.Presentation,
{$IFDEF DELPHI17_UP}
FMX.Graphics,
{$ENDIF}
uCEFFMXChromium, uCEFFMXBufferPanel, uCEFFMXWorkScheduler,
uCEFInterfaces, uCEFTypes, uCEFConstants;
type
TFMXExternalPumpBrowserFrm = class(TForm)
AddressPnl: TPanel;
AddressEdt: TEdit;
chrmosr: TFMXChromium;
Timer1: TTimer;
Panel2: TPanel;
GoBtn: TButton;
SnapshotBtn: TButton;
SaveDialog1: TSaveDialog;
Panel1: TFMXBufferPanel;
procedure GoBtnClick(Sender: TObject);
procedure GoBtnEnter(Sender: TObject);
procedure Panel1Enter(Sender: TObject);
procedure Panel1Exit(Sender: TObject);
procedure Panel1Resize(Sender: TObject);
procedure Panel1Click(Sender: TObject);
procedure Panel1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Single);
procedure Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Single);
procedure Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Single);
procedure Panel1MouseLeave(Sender: TObject);
procedure Panel1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; var Handled: Boolean);
procedure Panel1KeyUp(Sender: TObject; var Key: Word; var KeyChar: Char; Shift: TShiftState);
procedure Panel1KeyDown(Sender: TObject; var Key: Word; var KeyChar: Char; Shift: TShiftState);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure FormHide(Sender: TObject);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure chrmosrPaint(Sender: TObject; const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer);
procedure chrmosrCursorChange(Sender: TObject; const browser: ICefBrowser; cursor: HICON; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo);
procedure chrmosrGetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect);
procedure chrmosrGetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean);
procedure chrmosrGetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean);
procedure chrmosrPopupShow(Sender: TObject; const browser: ICefBrowser; show: Boolean);
procedure chrmosrPopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect);
procedure chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser);
procedure chrmosrTooltip(Sender: TObject; const browser: ICefBrowser; var text: ustring; out Result: Boolean);
procedure chrmosrBeforePopup(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 chrmosrAfterCreated(Sender: TObject; const browser: ICefBrowser);
procedure Timer1Timer(Sender: TObject);
procedure AddressEdtEnter(Sender: TObject);
procedure SnapshotBtnClick(Sender: TObject);
procedure SnapshotBtnEnter(Sender: TObject);
protected
FPopUpBitmap : TBitmap;
FPopUpRect : TRect;
FShowPopUp : boolean;
FResizing : boolean;
FPendingResize : boolean;
FCanClose : boolean;
FClosing : boolean;
FResizeCS : TCriticalSection;
{$IFDEF DELPHI17_UP}
FMouseWheelService : IFMXMouseService;
{$ENDIF}
FLastClickCount : integer;
FLastClickTime : integer;
FLastClickPoint : TPointF;
FLastClickButton : TMouseButton;
procedure LoadURL;
function getModifiers(Shift: TShiftState): TCefEventFlags;
function GetButton(Button: TMouseButton): TCefMouseButtonType;
function SendCompMessage(aMsg : cardinal; wParam : cardinal = 0; lParam : integer = 0) : boolean;
procedure InitializeLastClick;
function CancelPreviousClick(const x, y : single; var aCurrentTime : integer) : boolean;
public
procedure DoResize;
procedure DoBrowserCreated;
procedure NotifyMoveOrResizeStarted;
procedure SendCaptureLostEvent;
procedure HandleSYSCHAR(const aMessage : TMsg);
procedure HandleSYSKEYDOWN(const aMessage : TMsg);
procedure HandleSYSKEYUP(const aMessage : TMsg);
procedure SetBounds(ALeft: Integer; ATop: Integer; AWidth: Integer; AHeight: Integer); override;
end;
var
FMXExternalPumpBrowserFrm : TFMXExternalPumpBrowserFrm;
// This is a simple browser using FireMonkey components in OSR mode (off-screen rendering)
// and a external message pump.
// It's recomemded to understand the code in the SimpleOSRBrowser and OSRExternalPumpBrowser demos before
// reading the code in this demo.
// Due to the Firemonkey code structure, this demo uses a IFMXApplicationService interface implemented in
// uFMXApplicationService.pas to intercept some windows messages needed to make a CEF browser work.
// The TFMXApplicationService.HandleMessages function receives many of the messages that the
// OSRExternalPumpBrowser demo hadled in the main form or in the GlobalFMXWorkScheduler.
// It was necessary to destroy the browser following the destruction sequence described in
// the MDIBrowser demo but in OSR mode there are some modifications.
// All FMX applications using CEF4Delphi should add the $(FrameworkType) conditional define
// in the project options to avoid duplicated resources.
// This demo has that define in the menu option :
// Project -> Options -> Building -> Delphi compiler -> Conditional defines (All configurations)
// This is the destruction sequence in OSR mode :
// 1- FormCloseQuery sets CanClose to the initial FCanClose value (False) and calls chrmosr.CloseBrowser(True).
// 2- chrmosr.CloseBrowser(True) will trigger chrmosr.OnClose and we have to
// set "Result" to false and CEF will destroy the internal browser immediately.
// 3- chrmosr.OnBeforeClose is triggered because the internal browser was destroyed.
// Now we set FCanClose to True and send WM_CLOSE to the form.
procedure CreateGlobalCEFApp;
implementation
{$R *.fmx}
uses
System.SysUtils, System.Math, FMX.Platform, FMX.Platform.Win,
uCEFMiscFunctions, uCEFApplication, uFMXApplicationService;
procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64);
begin
if (GlobalFMXWorkScheduler <> nil) then GlobalFMXWorkScheduler.ScheduleMessagePumpWork(aDelayMS);
end;
procedure CreateGlobalCEFApp;
begin
// TFMXWorkScheduler will call cef_do_message_loop_work when
// it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event.
// GlobalFMXWorkScheduler needs to be created before the
// GlobalCEFApp.StartMainProcess call.
GlobalFMXWorkScheduler := TFMXWorkScheduler.Create(nil);
GlobalCEFApp := TCefApplication.Create;
GlobalCEFApp.WindowlessRenderingEnabled := True;
GlobalCEFApp.EnableHighDPISupport := True;
GlobalCEFApp.FlashEnabled := False;
GlobalCEFApp.ExternalMessagePump := True;
GlobalCEFApp.MultiThreadedMessageLoop := False;
GlobalCEFApp.OnScheduleMessagePumpWork := GlobalCEFApp_OnScheduleMessagePumpWork;
end;
procedure TFMXExternalPumpBrowserFrm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := FCanClose;
if not(FClosing) then
begin
FClosing := True;
Visible := False;
AddressPnl.Enabled := False;
chrmosr.CloseBrowser(True);
end;
end;
procedure TFMXExternalPumpBrowserFrm.FormCreate(Sender: TObject);
begin
TFMXApplicationService.AddPlatformService;
FPopUpBitmap := nil;
FPopUpRect := rect(0, 0, 0, 0);
FShowPopUp := False;
FResizing := False;
FPendingResize := False;
FCanClose := False;
FClosing := False;
FResizeCS := TCriticalSection.Create;
InitializeLastClick;
{$IFDEF DELPHI17_UP}
if TPlatformServices.Current.SupportsPlatformService(IFMXMouseService) then
FMouseWheelService := TPlatformServices.Current.GetPlatformService(IFMXMouseService) as IFMXMouseService;
{$ENDIF}
end;
procedure TFMXExternalPumpBrowserFrm.FormDestroy(Sender: TObject);
begin
FResizeCS.Free;
if (FPopUpBitmap <> nil) then FreeAndNil(FPopUpBitmap);
end;
procedure TFMXExternalPumpBrowserFrm.FormHide(Sender: TObject);
begin
chrmosr.SendFocusEvent(False);
chrmosr.WasHidden(True);
end;
procedure TFMXExternalPumpBrowserFrm.FormShow(Sender: TObject);
begin
if chrmosr.Initialized then
begin
chrmosr.WasHidden(False);
chrmosr.SendFocusEvent(True);
end
else
begin
// opaque white background color
chrmosr.Options.BackgroundColor := CefColorSetARGB($FF, $FF, $FF, $FF);
if not(chrmosr.CreateBrowser) then Timer1.Enabled := True;
end;
end;
procedure TFMXExternalPumpBrowserFrm.GoBtnClick(Sender: TObject);
begin
LoadURL;
end;
procedure TFMXExternalPumpBrowserFrm.LoadURL;
begin
FResizeCS.Acquire;
FResizing := False;
FPendingResize := False;
FResizeCS.Release;
chrmosr.LoadURL(AddressEdt.Text);
end;
procedure TFMXExternalPumpBrowserFrm.GoBtnEnter(Sender: TObject);
begin
chrmosr.SendFocusEvent(False);
end;
procedure TFMXExternalPumpBrowserFrm.Panel1Click(Sender: TObject);
begin
Panel1.SetFocus;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1Enter(Sender: TObject);
begin
chrmosr.SendFocusEvent(True);
end;
procedure TFMXExternalPumpBrowserFrm.Panel1Exit(Sender: TObject);
begin
chrmosr.SendFocusEvent(False);
end;
procedure TFMXExternalPumpBrowserFrm.Panel1KeyDown(Sender : TObject;
var Key : Word;
var KeyChar : Char;
Shift : TShiftState);
var
TempKeyEvent : TCefKeyEvent;
begin
if not(Panel1.IsFocused) or (chrmosr = nil) then exit;
if (Key <> 0) and (KeyChar = #0) 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);
chrmosr.SendKeyEvent(@TempKeyEvent);
if (Key in [VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_TAB]) then Key := 0;
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1KeyUp(Sender : TObject;
var Key : Word;
var KeyChar : Char;
Shift : TShiftState);
var
TempKeyEvent : TCefKeyEvent;
begin
if not(Panel1.IsFocused) or (chrmosr = nil) then exit;
if (Key = 0) and (KeyChar <> #0) then
begin
TempKeyEvent.kind := KEYEVENT_CHAR;
TempKeyEvent.modifiers := getModifiers(Shift);
TempKeyEvent.windows_key_code := ord(KeyChar);
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);
chrmosr.SendKeyEvent(@TempKeyEvent);
end
else
if (Key <> 0) and (KeyChar = #0) 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);
chrmosr.SendKeyEvent(@TempKeyEvent);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1MouseDown(Sender : TObject;
Button : TMouseButton;
Shift : TShiftState;
X, Y : Single);
var
TempEvent : TCefMouseEvent;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (chrmosr <> nil) then
begin
Panel1.SetFocus;
if not(CancelPreviousClick(x, y, TempTime)) and (Button = FLastClickButton) then
inc(FLastClickCount)
else
begin
FLastClickPoint.x := x;
FLastClickPoint.y := y;
FLastClickCount := 1;
end;
FLastClickTime := TempTime;
FLastClickButton := Button;
TempEvent.x := round(X);
TempEvent.y := round(Y);
TempEvent.modifiers := getModifiers(Shift);
chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), False, FLastClickCount);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1MouseLeave(Sender: TObject);
var
TempEvent : TCefMouseEvent;
TempPoint : TPoint;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (chrmosr <> nil) then
begin
GetCursorPos(TempPoint);
TempPoint := Panel1.ScreenToclient(TempPoint);
if CancelPreviousClick(TempPoint.x, TempPoint.y, TempTime) then InitializeLastClick;
TempEvent.x := TempPoint.x;
TempEvent.y := TempPoint.y;
TempEvent.modifiers := GetCefMouseModifiers;
chrmosr.SendMouseMoveEvent(@TempEvent, True);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1MouseMove(Sender : TObject;
Shift : TShiftState;
X, Y : Single);
var
TempEvent : TCefMouseEvent;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (chrmosr <> nil) then
begin
if CancelPreviousClick(x, y, TempTime) then InitializeLastClick;
TempEvent.x := round(X);
TempEvent.y := round(Y);
TempEvent.modifiers := getModifiers(Shift);
chrmosr.SendMouseMoveEvent(@TempEvent, False);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1MouseUp(Sender : TObject;
Button : TMouseButton;
Shift : TShiftState;
X, Y : Single);
var
TempEvent : TCefMouseEvent;
begin
if (GlobalCEFApp <> nil) and (chrmosr <> nil) then
begin
TempEvent.x := round(X);
TempEvent.y := round(Y);
TempEvent.modifiers := getModifiers(Shift);
chrmosr.SendMouseClickEvent(@TempEvent, GetButton(Button), True, FLastClickCount);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1MouseWheel(Sender : TObject;
Shift : TShiftState;
WheelDelta : Integer;
var Handled : Boolean);
var
TempEvent : TCefMouseEvent;
TempPointF : TPointF;
begin
if Panel1.IsFocused and (GlobalCEFApp <> nil) and (chrmosr <> nil) then
begin
{$IFDEF DELPHI17_UP}
if (FMouseWheelService <> nil) then
TempPointF := FMouseWheelService.GetMousePos
else
exit;
{$ELSE}
TempPointF := Platform.GetMousePos;
{$ENDIF}
TempEvent.x := round(TempPointF.x);
TempEvent.y := round(TempPointF.y);
TempEvent.modifiers := getModifiers(Shift);
chrmosr.SendMouseWheelEvent(@TempEvent, 0, WheelDelta);
end;
end;
procedure TFMXExternalPumpBrowserFrm.Panel1Resize(Sender: TObject);
begin
DoResize;
end;
procedure TFMXExternalPumpBrowserFrm.Timer1Timer(Sender: TObject);
begin
Timer1.Enabled := False;
if not(chrmosr.CreateBrowser) and not(chrmosr.Initialized) then
Timer1.Enabled := True;
end;
procedure TFMXExternalPumpBrowserFrm.AddressEdtEnter(Sender: TObject);
begin
chrmosr.SendFocusEvent(False);
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrAfterCreated(Sender: TObject;
const browser: ICefBrowser);
begin
// Now the browser is fully initialized we can send a message to the
// main form to load the initial web page.
SendCompMessage(CEF_AFTERCREATED);
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrBeforeClose(Sender: TObject; const browser: ICefBrowser);
begin
FCanClose := True;
SendCompMessage(WM_CLOSE);
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrBeforePopup( Sender : TObject;
const browser : ICefBrowser;
const frame : ICefFrame;
const targetUrl : ustring;
const 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 TFMXExternalPumpBrowserFrm.chrmosrCursorChange(Sender : TObject;
const browser : ICefBrowser;
cursor : HICON;
cursorType : TCefCursorType;
const customCursorInfo : PCefCursorInfo);
begin
Panel1.Cursor := CefCursorToWindowsCursor(cursorType);
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrGetScreenInfo(Sender : TObject;
const browser : ICefBrowser;
var screenInfo : TCefScreenInfo;
out Result : Boolean);
var
TempRect : TCEFRect;
begin
if (GlobalCEFApp <> nil) then
begin
TempRect.x := 0;
TempRect.y := 0;
TempRect.width := round(Panel1.Width);
TempRect.height := round(Panel1.Height);
screenInfo.device_scale_factor := GlobalCEFApp.DeviceScaleFactor;
screenInfo.depth := 0;
screenInfo.depth_per_component := 0;
screenInfo.is_monochrome := Ord(False);
screenInfo.rect := TempRect;
screenInfo.available_rect := TempRect;
Result := True;
end
else
Result := False;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrGetScreenPoint(Sender : TObject;
const browser : ICefBrowser;
viewX : Integer;
viewY : Integer;
var screenX : Integer;
var screenY : Integer;
out Result : Boolean);
var
TempScreenPt, TempViewPt : TPoint;
begin
if (GlobalCEFApp <> nil) then
begin
TempViewPt.x := LogicalToDevice(viewX, GlobalCEFApp.DeviceScaleFactor);
TempViewPt.y := LogicalToDevice(viewY, GlobalCEFApp.DeviceScaleFactor);
TempScreenPt := Panel1.ClientToScreen(TempViewPt);
screenX := TempScreenPt.x;
screenY := TempScreenPt.y;
Result := True;
end
else
Result := False;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrGetViewRect(Sender : TObject;
const browser : ICefBrowser;
var rect : TCefRect);
begin
if (GlobalCEFApp <> nil) then
begin
rect.x := 0;
rect.y := 0;
rect.width := round(Panel1.Width);
rect.height := round(Panel1.Height);
end;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrPaint(Sender : TObject;
const browser : ICefBrowser;
kind : TCefPaintElementType;
dirtyRectsCount : NativeUInt;
const dirtyRects : PCefRectArray;
const buffer : Pointer;
width : Integer;
height : Integer);
var
src, dst: PByte;
i, j, TempLineSize, TempSrcOffset, TempDstOffset, SrcStride, TempWidth, TempHeight : Integer;
n : NativeUInt;
{$IFNDEF DELPHI17_UP}
TempScanlineSize, DstStride : integer;
{$ENDIF}
TempBufferBits : Pointer;
TempForcedResize : boolean;
TempBitmapData : TBitmapData;
TempBitmap : TBitmap;
begin
try
FResizeCS.Acquire;
TempForcedResize := False;
if Panel1.BeginBufferDraw then
try
if (kind = PET_POPUP) then
begin
if (FPopUpBitmap = nil) or
(width <> FPopUpBitmap.Width) or
(height <> FPopUpBitmap.Height) then
begin
if (FPopUpBitmap <> nil) then FPopUpBitmap.Free;
FPopUpBitmap := TBitmap.Create(width, height);
{$IFDEF DELPHI17_UP}
FPopUpBitmap.BitmapScale := Panel1.ScreenScale;
{$ENDIF}
end;
TempWidth := FPopUpBitmap.Width;
TempHeight := FPopUpBitmap.Height;
{$IFNDEF DELPHI17_UP}
TempScanlineSize := FPopUpBitmap.BytesPerLine;
{$ENDIF}
TempBitmap := FPopUpBitmap;
end
else
begin
TempForcedResize := Panel1.UpdateBufferDimensions(Width, Height) or not(Panel1.BufferIsResized(False));
TempWidth := Panel1.BufferWidth;
TempHeight := Panel1.BufferHeight;
{$IFNDEF DELPHI17_UP}
TempScanlineSize := Panel1.ScanlineSize;
{$ENDIF}
TempBitmap := Panel1.Buffer;
end;
if (TempBitmap <> nil) {$IFDEF DELPHI17_UP}and TempBitmap.Map(TMapAccess.ReadWrite, TempBitmapData){$ENDIF} then
begin
try
{$IFNDEF DELPHI17_UP}
TempBufferBits := TempBitmapData.StartLine;
DstStride := TempScanlineSize;
{$ENDIF}
SrcStride := Width * 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) * SizeOf(TRGBQuad);
if (TempLineSize > 0) then
begin
TempSrcOffset := ((dirtyRects[n].y * Width) + dirtyRects[n].x) * SizeOf(TRGBQuad);
{$IFDEF DELPHI17_UP}
TempDstOffset := (dirtyRects[n].x * SizeOf(TRGBQuad));
{$ELSE}
TempDstOffset := (dirtyRects[n].y * TempScanlineSize) + (dirtyRects[n].x * SizeOf(TRGBQuad));
{$ENDIF}
src := @PByte(buffer)[TempSrcOffset];
{$IFNDEF DELPHI17_UP}
dst := @PByte(TempBufferBits)[TempDstOffset];
{$ENDIF}
i := 0;
j := min(dirtyRects[n].height, TempHeight - dirtyRects[n].y);
while (i < j) do
begin
{$IFDEF DELPHI17_UP}
TempBufferBits := TempBitmapData.GetScanline(dirtyRects[n].y + i);
dst := @PByte(TempBufferBits)[TempDstOffset];
{$ENDIF}
Move(src^, dst^, TempLineSize);
{$IFNDEF DELPHI17_UP}
inc(dst, DstStride);
{$ENDIF}
inc(src, SrcStride);
inc(i);
end;
end;
end;
inc(n);
end;
Panel1.InvalidatePanel;
finally
{$IFDEF DELPHI17_UP}
TempBitmap.Unmap(TempBitmapData);
{$ENDIF}
end;
if FShowPopup and (FPopUpBitmap <> nil) then
Panel1.BufferDraw(FPopUpRect.Left, FPopUpRect.Top, FPopUpBitmap);
end;
if (kind = PET_VIEW) then
begin
if TempForcedResize or FPendingResize then SendCompMessage(CEF_PENDINGRESIZE);
FResizing := False;
FPendingResize := False;
end;
finally
Panel1.EndBufferDraw;
end;
finally
FResizeCS.Release;
end;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrPopupShow(Sender: TObject; const browser: ICefBrowser; show: Boolean);
begin
if show then
FShowPopUp := True
else
begin
FShowPopUp := False;
FPopUpRect := rect(0, 0, 0, 0);
if (chrmosr <> nil) then chrmosr.Invalidate(PET_VIEW);
end;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrPopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect);
begin
if (GlobalCEFApp <> nil) then
begin
FPopUpRect.Left := rect.x;
FPopUpRect.Top := rect.y;
FPopUpRect.Right := rect.x + LogicalToDevice(rect.width, GlobalCEFApp.DeviceScaleFactor) - 1;
FPopUpRect.Bottom := rect.y + LogicalToDevice(rect.height, GlobalCEFApp.DeviceScaleFactor) - 1;
end;
end;
procedure TFMXExternalPumpBrowserFrm.chrmosrTooltip(Sender: TObject; const browser: ICefBrowser; var text: ustring; out Result: Boolean);
begin
Panel1.Hint := text;
Panel1.ShowHint := (length(text) > 0);
Result := True;
end;
procedure TFMXExternalPumpBrowserFrm.DoResize;
begin
try
if (FResizeCS <> nil) then
begin
FResizeCS.Acquire;
if FResizing then
FPendingResize := True
else
if Panel1.BufferIsResized then
chrmosr.Invalidate(PET_VIEW)
else
begin
FResizing := True;
chrmosr.WasResized;
end;
end;
finally
if (FResizeCS <> nil) then FResizeCS.Release;
end;
end;
procedure TFMXExternalPumpBrowserFrm.SetBounds(ALeft, ATop, AWidth, AHeight: Integer);
var
PositionChanged: Boolean;
begin
PositionChanged := (ALeft <> Left) or (ATop <> Top);
inherited SetBounds(ALeft, ATop, AWidth, AHeight);
if PositionChanged then
NotifyMoveOrResizeStarted;
end;
procedure TFMXExternalPumpBrowserFrm.NotifyMoveOrResizeStarted;
begin
if (chrmosr <> nil) then chrmosr.NotifyMoveOrResizeStarted;
end;
procedure TFMXExternalPumpBrowserFrm.SendCaptureLostEvent;
begin
if (chrmosr <> nil) then chrmosr.SendCaptureLostEvent;
end;
procedure TFMXExternalPumpBrowserFrm.HandleSYSCHAR(const aMessage : TMsg);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
begin
TempKeyEvent.kind := KEYEVENT_CHAR;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
TempKeyEvent.windows_key_code := aMessage.wParam;
TempKeyEvent.native_key_code := aMessage.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
chrmosr.SendKeyEvent(@TempKeyEvent);
end;
end;
procedure TFMXExternalPumpBrowserFrm.HandleSYSKEYDOWN(const aMessage : TMsg);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
begin
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
TempKeyEvent.windows_key_code := aMessage.wParam;
TempKeyEvent.native_key_code := aMessage.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
chrmosr.SendKeyEvent(@TempKeyEvent);
end;
end;
procedure TFMXExternalPumpBrowserFrm.HandleSYSKEYUP(const aMessage : TMsg);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.IsFocused and (aMessage.wParam in [VK_BACK..VK_HELP]) then
begin
TempKeyEvent.kind := KEYEVENT_KEYUP;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(aMessage.wParam, aMessage.lParam);
TempKeyEvent.windows_key_code := aMessage.wParam;
TempKeyEvent.native_key_code := aMessage.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
chrmosr.SendKeyEvent(@TempKeyEvent);
end;
end;
procedure TFMXExternalPumpBrowserFrm.DoBrowserCreated;
begin
Caption := 'FMX External Pump Browser';
AddressPnl.Enabled := True;
Panel1.SetFocus;
LoadURL;
end;
function TFMXExternalPumpBrowserFrm.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 TFMXExternalPumpBrowserFrm.GetButton(Button: TMouseButton): TCefMouseButtonType;
begin
case Button of
TMouseButton.mbRight : Result := MBT_RIGHT;
TMouseButton.mbMiddle : Result := MBT_MIDDLE;
else Result := MBT_LEFT;
end;
end;
function TFMXExternalPumpBrowserFrm.SendCompMessage(aMsg, wParam : cardinal; lParam : integer) : boolean;
{$IFDEF MSWINDOWS}
var
TempHandle : TWinWindowHandle;
{$ENDIF}
begin
{$IFDEF MSWINDOWS}
TempHandle := WindowHandleToPlatform(Handle);
Result := WinApi.Windows.PostMessage(TempHandle.Wnd, aMsg, wParam, lParam);
{$ELSE}
Result := False;
{$ENDIF}
end;
procedure TFMXExternalPumpBrowserFrm.InitializeLastClick;
begin
FLastClickCount := 0;
FLastClickTime := 0;
FLastClickPoint.x := 0;
FLastClickPoint.y := 0;
FLastClickButton := TMouseButton.mbLeft;
end;
function TFMXExternalPumpBrowserFrm.CancelPreviousClick(const x, y : single; var aCurrentTime : integer) : boolean;
begin
{$IFDEF MSWINDOWS}
aCurrentTime := GetMessageTime;
Result := (abs(FLastClickPoint.x - x) > (GetSystemMetrics(SM_CXDOUBLECLK) div 2)) or
(abs(FLastClickPoint.y - y) > (GetSystemMetrics(SM_CYDOUBLECLK) div 2)) or
(cardinal(aCurrentTime - FLastClickTime) > GetDoubleClickTime);
{$ELSE}
aCurrentTime := 0;
Result := False;
{$ENDIF}
end;
procedure TFMXExternalPumpBrowserFrm.SnapshotBtnClick(Sender: TObject);
begin
if SaveDialog1.Execute then Panel1.SaveToFile(SaveDialog1.FileName);
end;
procedure TFMXExternalPumpBrowserFrm.SnapshotBtnEnter(Sender: TObject);
begin
chrmosr.SendFocusEvent(False);
end;
end.
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