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mirror of https://github.com/salvadordf/CEF4Delphi.git synced 2024-12-04 09:26:52 +02:00
CEF4Delphi/demos/PopupBrowser/uChildForm.pas
Salvador Díaz Fau a8c44bd87b Update to CEF 3.3578.1863.gbf8cff2
- Removed obsolete "Result" parameter in all OSR demos.
- Added more code comments to ResponseFilterBrowser.
- Now ResponseFilterBrowser modifies the HTTP request to receive uncompressed resources.
- Updated compiler properties in Delphinus.Install.json
2019-01-13 12:17:52 +01:00

864 lines
30 KiB
ObjectPascal

// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF3 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 © 2019 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 uChildForm;
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes,
System.SyncObjs, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls,
Vcl.ExtCtrls, Vcl.AppEvnts,
{$ELSE}
Windows, Messages, SysUtils, Variants, Classes, SyncObjs,
Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls, AppEvnts,
{$ENDIF}
uCEFChromium, uCEFTypes, uCEFInterfaces, uCEFConstants, uBufferPanel;
const
CEF_SHOWCHILD = WM_APP + $A52;
type
TChildForm = class(TForm)
Chromium1: TChromium;
Panel1: TBufferPanel;
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: Integer);
procedure Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
procedure Panel1MouseLeave(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure FormHide(Sender: TObject);
procedure FormAfterMonitorDpiChanged(Sender: TObject; OldDPI, NewDPI: Integer);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
procedure Chromium1Paint(Sender: TObject; const browser: ICefBrowser; kind: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; width, height: Integer);
procedure Chromium1CursorChange(Sender: TObject; const browser: ICefBrowser; cursor: HICON; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo);
procedure Chromium1GetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect);
procedure Chromium1GetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean);
procedure Chromium1GetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean);
procedure Chromium1PopupShow(Sender: TObject; const browser: ICefBrowser; show: Boolean);
procedure Chromium1PopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect);
procedure Chromium1Tooltip(Sender: TObject; const browser: ICefBrowser; var text: ustring; out Result: Boolean);
procedure Chromium1BeforePopup(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl, targetFrameName: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; var popupFeatures: TCefPopupFeatures; var windowInfo: TCefWindowInfo; var client: ICefClient; var settings: TCefBrowserSettings; var noJavascriptAccess: Boolean; out Result: Boolean);
procedure Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
procedure Chromium1Close(Sender: TObject; const browser: ICefBrowser; out Result: Boolean);
procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
protected
FPopUpBitmap : TBitmap;
FPopUpRect : TRect;
FShowPopUp : boolean;
FResizing : boolean;
FPendingResize : boolean;
FCanClose : boolean;
FClosing : boolean;
FClientInitialized : boolean;
FResizeCS : TCriticalSection;
FPopupFeatures : TCefPopupFeatures;
FLastClickCount : integer;
FLastClickTime : integer;
FLastClickPoint : TPoint;
FLastClickButton : TMouseButton;
function getModifiers(Shift: TShiftState): TCefEventFlags;
function GetButton(Button: TMouseButton): TCefMouseButtonType;
procedure DoResize;
procedure InitializeLastClick;
function CancelPreviousClick(x, y : integer; var aCurrentTime : integer) : boolean;
procedure WMMove(var aMessage : TWMMove); message WM_MOVE;
procedure WMMoving(var aMessage : TMessage); message WM_MOVING;
procedure WMCaptureChanged(var aMessage : TMessage); message WM_CAPTURECHANGED;
procedure WMCancelMode(var aMessage : TMessage); message WM_CANCELMODE;
procedure WMEnterMenuLoop(var aMessage: TMessage); message WM_ENTERMENULOOP;
procedure WMExitMenuLoop(var aMessage: TMessage); message WM_EXITMENULOOP;
procedure PendingResizeMsg(var aMessage : TMessage); message CEF_PENDINGRESIZE;
procedure ShowChildMsg(var aMessage : TMessage); message CEF_SHOWCHILD;
public
function CreateClientHandler(var windowInfo : TCefWindowInfo; var client : ICefClient; const targetFrameName : string; const popupFeatures : TCefPopupFeatures) : boolean;
procedure ApplyPopupFeatures;
procedure HandleSysCharMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleSysKeyDownMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleSysKeyUpMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleKeyDownMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleKeyUpMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleCharMsg(var Msg: tagMSG; var Handled: Boolean);
procedure HandleMouseWheelMsg(var Msg: tagMSG; var Handled: Boolean);
property ClientInitialized : boolean read FClientInitialized;
property Closing : boolean read FClosing;
end;
implementation
{$R *.dfm}
uses
{$IFDEF DELPHI16_UP}
System.Math,
{$ELSE}
Math,
{$ENDIF}
uCEFMiscFunctions, uCEFApplication, uMainForm;
// 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 CEF3 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 TChildForm.HandleSysCharMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_CHAR;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := True;
end
else
Handled := False;
end;
procedure TChildForm.HandleSysKeyDownMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := True;
end
else
Handled := False;
end;
procedure TChildForm.HandleSysKeyUpMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_KEYUP;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(True);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := True;
end
else
Handled := False;
end;
procedure TChildForm.HandleKeyDownMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_RAWKEYDOWN;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := (Msg.wParam = VK_TAB);
end
else
Handled := False;
end;
procedure TChildForm.HandleKeyUpMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_KEYUP;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := True;
end
else
Handled := False;
end;
procedure TChildForm.HandleCharMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempKeyEvent : TCefKeyEvent;
begin
if Panel1.Focused then
begin
TempKeyEvent.kind := KEYEVENT_CHAR;
TempKeyEvent.modifiers := GetCefKeyboardModifiers(Msg.wParam, Msg.lParam);
TempKeyEvent.windows_key_code := Msg.wParam;
TempKeyEvent.native_key_code := Msg.lParam;
TempKeyEvent.is_system_key := ord(False);
TempKeyEvent.character := #0;
TempKeyEvent.unmodified_character := #0;
TempKeyEvent.focus_on_editable_field := ord(False);
Chromium1.SendKeyEvent(@TempKeyEvent);
Handled := True;
end
else
Handled := False;
end;
procedure TChildForm.HandleMouseWheelMsg(var Msg: tagMSG; var Handled: Boolean);
var
TempMouseEvent : TCefMouseEvent;
begin
if Panel1.Focused and (GlobalCEFApp <> nil) then
begin
TempMouseEvent.x := Msg.lParam and $FFFF;
TempMouseEvent.y := Msg.lParam shr 16;
TempMouseEvent.modifiers := GetCefMouseModifiers(Msg.wParam);
DeviceToLogical(TempMouseEvent, GlobalCEFApp.DeviceScaleFactor);
Chromium1.SendMouseWheelEvent(@TempMouseEvent, 0, int16(Msg.wParam shr 16));
Handled := False;
end;
end;
function TChildForm.CreateClientHandler(var windowInfo : TCefWindowInfo;
var client : ICefClient;
const targetFrameName : string;
const popupFeatures : TCefPopupFeatures) : boolean;
begin
Chromium1.InitializeDragAndDrop(Panel1);
WindowInfoAsWindowless(windowInfo, 0, targetFrameName);
FPopupFeatures := popupFeatures;
FClientInitialized := Chromium1.CreateClientHandler(client);
Result := FClientInitialized;
end;
procedure TChildForm.ApplyPopupFeatures;
begin
if (FPopupFeatures.xset <> 0) then Chromium1.SetFormLeftTo(FPopupFeatures.x);
if (FPopupFeatures.yset <> 0) then Chromium1.SetFormTopTo(FPopupFeatures.y);
if (FPopupFeatures.widthset <> 0) then Chromium1.ResizeFormWidthTo(FPopupFeatures.width);
if (FPopupFeatures.heightset <> 0) then Chromium1.ResizeFormHeightTo(FPopupFeatures.height);
end;
procedure TChildForm.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser);
begin
FCanClose := True;
PostMessage(Handle, WM_CLOSE, 0, 0);
end;
procedure TChildForm.Chromium1BeforePopup(Sender : TObject;
const browser : ICefBrowser;
const frame : ICefFrame;
const targetUrl : ustring;
const targetFrameName : ustring;
targetDisposition : TCefWindowOpenDisposition;
userGesture : Boolean;
var popupFeatures : TCefPopupFeatures;
var windowInfo : TCefWindowInfo;
var client : ICefClient;
var settings : TCefBrowserSettings;
var noJavascriptAccess : Boolean;
out Result : Boolean);
begin
case targetDisposition of
WOD_NEW_FOREGROUND_TAB,
WOD_NEW_BACKGROUND_TAB,
WOD_NEW_WINDOW : Result := True; // For simplicity, this demo blocks new tabs and new windows.
WOD_NEW_POPUP : Result := not(TMainForm(Owner).CreateClientHandler(windowInfo, client, targetFrameName, popupFeatures));
else Result := False;
end;
end;
procedure TChildForm.Chromium1Close(Sender: TObject; const browser: ICefBrowser; out Result: Boolean);
begin
Result := False;
end;
procedure TChildForm.Chromium1CursorChange(Sender : TObject;
const browser : ICefBrowser;
cursor : HICON;
cursorType : TCefCursorType;
const customCursorInfo : PCefCursorInfo);
begin
Panel1.Cursor := GefCursorToWindowsCursor(cursorType);
end;
procedure TChildForm.Chromium1GetScreenInfo(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 := DeviceToLogical(Panel1.Width, GlobalCEFApp.DeviceScaleFactor);
TempRect.height := DeviceToLogical(Panel1.Height, GlobalCEFApp.DeviceScaleFactor);
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 TChildForm.Chromium1GetScreenPoint(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 TChildForm.Chromium1GetViewRect(Sender : TObject;
const browser : ICefBrowser;
var rect : TCefRect);
begin
if (GlobalCEFApp <> nil) then
begin
rect.x := 0;
rect.y := 0;
rect.width := DeviceToLogical(Panel1.Width, GlobalCEFApp.DeviceScaleFactor);
rect.height := DeviceToLogical(Panel1.Height, GlobalCEFApp.DeviceScaleFactor);
end;
end;
procedure TChildForm.Chromium1Paint(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, DstStride : Integer;
n : NativeUInt;
TempWidth, TempHeight, TempScanlineSize : integer;
TempBufferBits : Pointer;
TempForcedResize : boolean;
begin
try
FResizeCS.Acquire;
TempForcedResize := False;
if Panel1.BeginBufferDraw then
begin
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;
FPopUpBitmap.PixelFormat := pf32bit;
FPopUpBitmap.HandleType := bmDIB;
FPopUpBitmap.Width := width;
FPopUpBitmap.Height := height;
end;
TempWidth := FPopUpBitmap.Width;
TempHeight := FPopUpBitmap.Height;
TempScanlineSize := FPopUpBitmap.Width * SizeOf(TRGBQuad);
TempBufferBits := FPopUpBitmap.Scanline[pred(FPopUpBitmap.Height)];
end
else
begin
TempForcedResize := Panel1.UpdateBufferDimensions(Width, Height) or not(Panel1.BufferIsResized(False));
TempWidth := Panel1.BufferWidth;
TempHeight := Panel1.BufferHeight;
TempScanlineSize := Panel1.ScanlineSize;
TempBufferBits := Panel1.BufferBits;
end;
if (TempBufferBits <> nil) then
begin
SrcStride := Width * SizeOf(TRGBQuad);
DstStride := - TempScanlineSize;
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);
TempDstOffset := ((TempScanlineSize * pred(TempHeight)) - (dirtyRects[n].y * TempScanlineSize)) +
(dirtyRects[n].x * SizeOf(TRGBQuad));
src := @PByte(buffer)[TempSrcOffset];
dst := @PByte(TempBufferBits)[TempDstOffset];
i := 0;
j := min(dirtyRects[n].height, TempHeight - dirtyRects[n].y);
while (i < j) do
begin
Move(src^, dst^, TempLineSize);
Inc(dst, DstStride);
Inc(src, SrcStride);
inc(i);
end;
end;
end;
inc(n);
end;
if FShowPopup and (FPopUpBitmap <> nil) then
Panel1.BufferDraw(FPopUpRect.Left, FPopUpRect.Top, FPopUpBitmap);
end;
Panel1.EndBufferDraw;
Panel1.InvalidatePanel;
if (kind = PET_VIEW) then
begin
if TempForcedResize or FPendingResize then PostMessage(Handle, CEF_PENDINGRESIZE, 0, 0);
FResizing := False;
FPendingResize := False;
end;
end;
finally
FResizeCS.Release;
end;
end;
procedure TChildForm.Chromium1PopupShow(Sender : TObject;
const browser : ICefBrowser;
show : Boolean);
begin
if show then
FShowPopUp := True
else
begin
FShowPopUp := False;
FPopUpRect := rect(0, 0, 0, 0);
if (Chromium1 <> nil) then Chromium1.Invalidate(PET_VIEW);
end;
end;
procedure TChildForm.Chromium1PopupSize(Sender : TObject;
const browser : ICefBrowser;
const rect : PCefRect);
begin
if (GlobalCEFApp <> nil) then
begin
LogicalToDevice(rect^, GlobalCEFApp.DeviceScaleFactor);
FPopUpRect.Left := rect.x;
FPopUpRect.Top := rect.y;
FPopUpRect.Right := rect.x + rect.width - 1;
FPopUpRect.Bottom := rect.y + rect.height - 1;
end;
end;
procedure TChildForm.Chromium1TitleChange(Sender: TObject; const browser: ICefBrowser; const title: ustring);
begin
Caption := title;
end;
procedure TChildForm.Chromium1Tooltip(Sender: TObject; const browser: ICefBrowser; var text: ustring; out Result: Boolean);
begin
Panel1.hint := text;
Panel1.ShowHint := (length(text) > 0);
Result := True;
end;
function TChildForm.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 TChildForm.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 TChildForm.WMMove(var aMessage : TWMMove);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TChildForm.WMMoving(var aMessage : TMessage);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.NotifyMoveOrResizeStarted;
end;
procedure TChildForm.WMCaptureChanged(var aMessage : TMessage);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.SendCaptureLostEvent;
end;
procedure TChildForm.WMCancelMode(var aMessage : TMessage);
begin
inherited;
if (Chromium1 <> nil) then Chromium1.SendCaptureLostEvent;
end;
procedure TChildForm.WMEnterMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := True;
end;
procedure TChildForm.WMExitMenuLoop(var aMessage: TMessage);
begin
inherited;
if (aMessage.wParam = 0) and (GlobalCEFApp <> nil) then GlobalCEFApp.OsmodalLoop := False;
end;
procedure TChildForm.FormAfterMonitorDpiChanged(Sender: TObject; OldDPI, NewDPI: Integer);
begin
if (Chromium1 <> nil) then
begin
Chromium1.NotifyScreenInfoChanged;
Chromium1.WasResized;
end;
end;
procedure TChildForm.FormClose(Sender: TObject; var Action: TCloseAction);
begin
Action := caFree;
end;
procedure TChildForm.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
CanClose := FCanClose;
if not(FClosing) then
begin
FClosing := True;
Visible := False;
Chromium1.CloseBrowser(True);
end;
end;
procedure TChildForm.FormCreate(Sender: TObject);
begin
FPopUpBitmap := nil;
FPopUpRect := rect(0, 0, 0, 0);
FShowPopUp := False;
FResizing := False;
FPendingResize := False;
FCanClose := False;
FClosing := False;
FClientInitialized := False;
FResizeCS := TCriticalSection.Create;
InitializeLastClick;
end;
procedure TChildForm.FormDestroy(Sender: TObject);
begin
Chromium1.ShutdownDragAndDrop;
if (FPopUpBitmap <> nil) then FreeAndNil(FPopUpBitmap);
if FClientInitialized and TMainForm(Owner).HandleAllocated then
PostMessage(TMainForm(Owner).Handle, CEF_CHILDDESTROYED, 0, 0);
end;
procedure TChildForm.FormHide(Sender: TObject);
begin
Chromium1.SendFocusEvent(False);
Chromium1.WasHidden(True);
end;
procedure TChildForm.FormShow(Sender: TObject);
begin
Chromium1.WasHidden(False);
Chromium1.SendFocusEvent(True);
end;
procedure TChildForm.Panel1Click(Sender: TObject);
begin
Panel1.SetFocus;
end;
procedure TChildForm.Panel1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (Chromium1 <> 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 := X;
TempEvent.y := Y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
Chromium1.SendMouseClickEvent(@TempEvent, GetButton(Button), False, FLastClickCount);
end;
end;
procedure TChildForm.Panel1MouseLeave(Sender: TObject);
var
TempEvent : TCefMouseEvent;
TempPoint : TPoint;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (Chromium1 <> 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;
DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
Chromium1.SendMouseMoveEvent(@TempEvent, True);
end;
end;
procedure TChildForm.Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
TempTime : integer;
begin
if (GlobalCEFApp <> nil) and (Chromium1 <> nil) then
begin
if CancelPreviousClick(x, y, TempTime) then InitializeLastClick;
TempEvent.x := X;
TempEvent.y := Y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
Chromium1.SendMouseMoveEvent(@TempEvent, False);
end;
end;
procedure TChildForm.Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
TempEvent : TCefMouseEvent;
begin
if (GlobalCEFApp <> nil) and (Chromium1 <> nil) then
begin
TempEvent.x := X;
TempEvent.y := Y;
TempEvent.modifiers := getModifiers(Shift);
DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor);
Chromium1.SendMouseClickEvent(@TempEvent, GetButton(Button), True, FLastClickCount);
end;
end;
procedure TChildForm.Panel1Resize(Sender: TObject);
begin
DoResize;
end;
procedure TChildForm.PendingResizeMsg(var aMessage : TMessage);
begin
DoResize;
end;
procedure TChildForm.ShowChildMsg(var aMessage : TMessage);
begin
ApplyPopupFeatures;
Show;
end;
procedure TChildForm.DoResize;
begin
try
FResizeCS.Acquire;
if FResizing then
FPendingResize := True
else
if Panel1.BufferIsResized then
Chromium1.Invalidate(PET_VIEW)
else
begin
FResizing := True;
Chromium1.WasResized;
end;
finally
FResizeCS.Release;
end;
end;
procedure TChildForm.InitializeLastClick;
begin
FLastClickCount := 0;
FLastClickTime := 0;
FLastClickPoint.x := 0;
FLastClickPoint.y := 0;
FLastClickButton := mbLeft;
end;
function TChildForm.CancelPreviousClick(x, y : integer; var aCurrentTime : integer) : boolean;
begin
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);
end;
procedure TChildForm.Panel1Enter(Sender: TObject);
begin
Chromium1.SendFocusEvent(True);
end;
procedure TChildForm.Panel1Exit(Sender: TObject);
begin
Chromium1.SendFocusEvent(False);
end;
end.