// ************************************************************************ // ***************************** 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 © 2022 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 * 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 uOSRExternalPumpBrowser2; {$mode objfpc}{$H+} interface uses Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls, LCLType, ComCtrls, Types, SyncObjs, eventlog, LMessages, OpenGLContext, GL, GLext, uCEFChromium, uCEFTypes, uCEFInterfaces, uCEFConstants, uCEFBufferPanel, uCEFChromiumEvents; type { TForm1 } TForm1 = class(TForm) AddressEdt: TEdit; Panel1: TOpenGLControl; SaveDialog1: TSaveDialog; GoBtn: TButton; Chromium1: TChromium; AddressPnl: TPanel; Panel2: TPanel; procedure Panel1Click(Sender: TObject); procedure Panel1Enter(Sender: TObject); procedure Panel1Exit(Sender: TObject); procedure Panel1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); procedure Panel1MouseEnter(Sender: TObject); procedure Panel1MouseLeave(Sender: TObject); procedure Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); procedure Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); procedure Panel1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean); procedure Panel1Paint(Sender: TObject); procedure Panel1Resize(Sender: TObject); procedure Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser); procedure Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser); procedure Chromium1BeforePopup(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 Chromium1CursorChange(Sender: TObject; const browser: ICefBrowser; cursor_: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo; var aResult : boolean); procedure Chromium1GetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean); procedure Chromium1GetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean); procedure Chromium1GetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect); procedure Chromium1OpenUrlFromTab(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out Result: Boolean); procedure Chromium1Paint(Sender: TObject; const browser: ICefBrowser; type_: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; aWidth, aHeight: Integer); procedure Chromium1PopupShow(Sender: TObject; const browser: ICefBrowser; aShow: Boolean); procedure Chromium1PopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect); procedure Chromium1Tooltip(Sender: TObject; const browser: ICefBrowser; var aText: ustring; out Result: Boolean); procedure FormCreate(Sender: TObject); procedure FormDestroy(Sender: TObject); procedure FormActivate(Sender: TObject); procedure FormCloseQuery(Sender: TObject; var CanClose: boolean); procedure FormHide(Sender: TObject); procedure FormShow(Sender: TObject); procedure GoBtnClick(Sender: TObject); procedure GoBtnEnter(Sender: TObject); procedure AddressEdtEnter(Sender: TObject); private protected FPopUpRect : TRect; FShowPopUp : boolean; FCanClose : boolean; FClosing : boolean; FFirstLoad : boolean; FGLInitialized : boolean; FTextureID : GLuint; FTextureWidth : integer; FTextureHeight : integer; FUpdateRect : TCefRect; function InitializeOpenGL : boolean; procedure VerifyOpenGLErrors; function getModifiers(Shift: TShiftState): TCefEventFlags; function GetButton(Button: TMouseButton): TCefMouseButtonType; // CEF needs to handle these messages to call TChromium.NotifyMoveOrResizeStarted procedure WMMove(var Message: TLMMove); message LM_MOVE; procedure WMSize(var Message: TLMSize); message LM_SIZE; procedure WMWindowPosChanged(var Message: TLMWindowPosChanged); message LM_WINDOWPOSCHANGED; public procedure SendCEFKeyEvent(const aCefEvent : TCefKeyEvent); end; var Form1: TForm1; procedure CreateGlobalCEFApp; implementation {$R *.lfm} // This demo uses a CEF browser in "off-screen rendering" mode (a.k.a OSR mode) // but instead of copying the raw bitmap information it uses an OpenGL texture // to accelerate drawing the contents. // It's recommemded to avoid using OpenGL in multiple threads so this demo uses // a external message pump to execute all CEF events in the main appliction // thread. // This demo uses a TOpenGLControl control from the "LazOpenGLContext" package. // // Before you install the LazOpenGLContext package you need to install the // libgl1-mesa-dev package in Linux. // If you use Ubuntu you would have to open a Terminal and execute the following // commands : // sudo apt-get update -y // sudo apt-get install -y libgl1-mesa-dev // // Follow these steps to install the LazOpenGLContext package in Lazarus: // 1.- Click on the "Package" option of the main Lazarus menu. // 2.- Select the "Install/Uninstall packages" option. // 3.- Choose "LazOpenGLContext" on the right side panel. // 4.- Click on the "Install selection" button. // 5.- Click on the "Save and rebuild IDE" button. // 6.- Click on the "Continue" button. // 7.- Wait a moment until Lazarus restarts. // The code in this demo is a translation of the official CEF sample application // called "cefsimple" and it also copies a few code fragments from the OSRDemo // in the fpCEF3 project. // In case you run this demo inside a virtual machine or using an unsupported // graphics card you may get a white screen and/or OpenGL errors. // Lazarus usually initializes the GTK WidgetSet in the initialization section // of the "Interfaces" unit which is included in the LPR file. This causes // initialization problems in CEF and we need to call "CreateWidgetset" after // the GlobalCEFApp.StartMainProcess call. // Lazarus shows a warning if we remove the "Interfaces" unit from the LPR file // so we created a custom unit with the same name that includes two procedures // to initialize and finalize the WidgetSet at the right time. // This is the destruction sequence in OSR mode : // 1- FormCloseQuery sets CanClose to the initial FCanClose value (False) and // calls Chromium1.CloseBrowser(True) which will destroy the internal browser // immediately. // 2- Chromium1.OnBeforeClose is triggered because the internal browser was // destroyed. FCanClose is set to True and we can close the form safely. uses Math, gtk2, glib2, gdk2, gtk2proc, gtk2int, uCEFMiscFunctions, uCEFApplication, uCEFBitmapBitBuffer, uCEFWorkScheduler, uCEFLinuxFunctions; procedure GlobalCEFApp_OnScheduleMessagePumpWork(const aDelayMS : int64); begin if (GlobalCEFWorkScheduler <> nil) then GlobalCEFWorkScheduler.ScheduleMessagePumpWork(aDelayMS); end; procedure CreateGlobalCEFApp; begin GlobalCEFApp := TCefApplication.Create; GlobalCEFApp.WindowlessRenderingEnabled := True; GlobalCEFApp.EnableHighDPISupport := True; GlobalCEFApp.BrowserSubprocessPath := 'OSRExternalPumpBrowser2_sp'; GlobalCEFApp.EnableGPU := True; GlobalCEFApp.BackgroundColor := CefColorSetARGB($FF, $FF, $FF, $FF); GlobalCEFApp.ExternalMessagePump := True; GlobalCEFApp.MultiThreadedMessageLoop := False; GlobalCEFApp.OnScheduleMessagePumpWork := @GlobalCEFApp_OnScheduleMessagePumpWork; // This is a workaround for the 'GPU is not usable error' issue : // https://bitbucket.org/chromiumembedded/cef/issues/2964/gpu-is-not-usable-error-during-cef GlobalCEFApp.DisableZygote := True; // this property adds the "--no-zygote" command line switch // TCEFWorkScheduler will call cef_do_message_loop_work when // it's told in the GlobalCEFApp.OnScheduleMessagePumpWork event. // GlobalCEFWorkScheduler needs to be created before the // GlobalCEFApp.StartMainProcess call. // We use CreateDelayed in order to have a single thread in the process while // CEF is initialized. GlobalCEFWorkScheduler := TCEFWorkScheduler.CreateDelayed; GlobalCEFApp.StartMainProcess; GlobalCEFWorkScheduler.CreateThread; end; function GTKKeyPress(Widget: PGtkWidget; Event: PGdkEventKey; Data: gPointer) : GBoolean; cdecl; var TempCefEvent : TCefKeyEvent; begin GdkEventKeyToCEFKeyEvent(Event, TempCefEvent); if (Event^._type = GDK_KEY_PRESS) then begin TempCefEvent.kind := KEYEVENT_RAWKEYDOWN; Form1.SendCEFKeyEvent(TempCefEvent); TempCefEvent.kind := KEYEVENT_CHAR; Form1.SendCEFKeyEvent(TempCefEvent); end else begin TempCefEvent.kind := KEYEVENT_KEYUP; Form1.SendCEFKeyEvent(TempCefEvent); end; Result := True; end; procedure ConnectKeyPressReleaseEvents(const aWidget : PGtkWidget); begin g_signal_connect(aWidget, 'key-press-event', TGTKSignalFunc(@GTKKeyPress), nil); g_signal_connect(aWidget, 'key-release-event', TGTKSignalFunc(@GTKKeyPress), nil); end; { TForm1 } procedure TForm1.SendCEFKeyEvent(const aCefEvent : TCefKeyEvent); begin Chromium1.SendKeyEvent(@aCefEvent); end; procedure TForm1.GoBtnClick(Sender: TObject); begin Chromium1.LoadURL(UTF8Decode(AddressEdt.Text)); end; procedure TForm1.Chromium1AfterCreated(Sender: TObject; const browser: ICefBrowser); begin // Now the browser is fully initialized we can initialize the UI. Caption := 'OSR External Pump Browser 2'; AddressPnl.Enabled := True; Chromium1.NotifyMoveOrResizeStarted; end; procedure TForm1.AddressEdtEnter(Sender: TObject); begin Chromium1.SetFocus(False); end; procedure TForm1.Panel1Click(Sender: TObject); begin Panel1.SetFocus; end; procedure TForm1.FormActivate(Sender: TObject); begin // You *MUST* call CreateBrowser to create and initialize the browser. // This will trigger the AfterCreated event when the browser is fully // initialized and ready to receive commands. // GlobalCEFApp.GlobalContextInitialized has to be TRUE before creating any browser // If it's not initialized yet, we use a simple timer to create the browser later. // Linux needs a visible form to create a browser so we need to use the // TForm.OnActivate event instead of the TForm.OnShow event if not(Chromium1.Initialized) then begin // We have to update the DeviceScaleFactor here to get the scale of the // monitor where the main application form is located. GlobalCEFApp.UpdateDeviceScaleFactor; // opaque white background color Chromium1.Options.BackgroundColor := CefColorSetARGB($FF, $FF, $FF, $FF); Chromium1.DefaultURL := UTF8Decode(AddressEdt.Text); Chromium1.CreateBrowser; end; end; procedure TForm1.Panel1Enter(Sender: TObject); begin Chromium1.SetFocus(True); end; procedure TForm1.Panel1Exit(Sender: TObject); begin Chromium1.SetFocus(False); end; procedure TForm1.Panel1MouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); var TempEvent : TCefMouseEvent; begin Panel1.SetFocus; TempEvent.x := X; TempEvent.y := Y; TempEvent.modifiers := getModifiers(Shift); DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseClickEvent(@TempEvent, GetButton(Button), False, 1); end; procedure TForm1.Panel1MouseEnter(Sender: TObject); var TempEvent : TCefMouseEvent; TempPoint : TPoint; begin TempPoint := Panel1.ScreenToClient(mouse.CursorPos); TempEvent.x := TempPoint.x; TempEvent.y := TempPoint.y; TempEvent.modifiers := EVENTFLAG_NONE; DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseMoveEvent(@TempEvent, False); end; procedure TForm1.Panel1MouseLeave(Sender: TObject); var TempEvent : TCefMouseEvent; TempPoint : TPoint; begin TempPoint := Panel1.ScreenToClient(mouse.CursorPos); TempEvent.x := TempPoint.x; TempEvent.y := TempPoint.y; TempEvent.modifiers := EVENTFLAG_NONE; DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseMoveEvent(@TempEvent, True); end; procedure TForm1.Panel1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); var TempEvent : TCefMouseEvent; begin TempEvent.x := x; TempEvent.y := y; TempEvent.modifiers := getModifiers(Shift); DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseMoveEvent(@TempEvent, False); end; procedure TForm1.Panel1MouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); var TempEvent : TCefMouseEvent; begin TempEvent.x := X; TempEvent.y := Y; TempEvent.modifiers := getModifiers(Shift); DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseClickEvent(@TempEvent, GetButton(Button), True, 1); end; procedure TForm1.Panel1MouseWheel(Sender: TObject; Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean); var TempEvent : TCefMouseEvent; begin TempEvent.x := MousePos.x; TempEvent.y := MousePos.y; TempEvent.modifiers := getModifiers(Shift); DeviceToLogical(TempEvent, GlobalCEFApp.DeviceScaleFactor); Chromium1.SendMouseWheelEvent(@TempEvent, 0, WheelDelta); end; procedure TForm1.Panel1Paint(Sender: TObject); Type TVertex = packed record tu, tv: Single; x, y, z: Single; end; Const Vertices : array[0..3] of TVertex = ( (tu: 0.0; tv: 1.0; x: -1.0; y: -1.0; z: 0.0), (tu: 1.0; tv: 1.0; x: 1.0; y: -1.0; z: 0.0), (tu: 1.0; tv: 0.0; x: 1.0; y: 1.0; z: 0.0), (tu: 0.0; tv: 0.0; x: -1.0; y: 1.0; z: 0.0) ); begin if (FTextureWidth = 0) or (FTextureHeight = 0) or not(FGLInitialized) then exit; glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT); VerifyOpenGLErrors; glMatrixMode(GL_MODELVIEW); VerifyOpenGLErrors; glLoadIdentity(); VerifyOpenGLErrors; // Match GL units to screen coordinates. glViewport(0, 0, FTextureWidth, FTextureHeight); VerifyOpenGLErrors; glMatrixMode(GL_PROJECTION); VerifyOpenGLErrors; glLoadIdentity(); VerifyOpenGLErrors; // Draw the background gradient. glPushAttrib(GL_ALL_ATTRIB_BITS); VerifyOpenGLErrors; // Don't check for errors until glEnd(). glBegin(GL_QUADS); glColor4f(1.0, 0.0, 0.0, 1.0); // red glVertex2f(-1.0, -1.0); glVertex2f(1.0, -1.0); glColor4f(0.0, 0.0, 1.0, 1.0); // blue glVertex2f(1.0, 1.0); glVertex2f(-1.0, 1.0); glEnd(); VerifyOpenGLErrors; glPopAttrib(); VerifyOpenGLErrors; // Enable 2D textures. glEnable(GL_TEXTURE_2D); VerifyOpenGLErrors; // Draw the facets with the texture. glBindTexture(GL_TEXTURE_2D, FTextureID); VerifyOpenGLErrors; glInterleavedArrays(GL_T2F_V3F, 0, @Vertices); VerifyOpenGLErrors; glDrawArrays(GL_QUADS, 0, 4); VerifyOpenGLErrors; // Disable 2D textures. glDisable(GL_TEXTURE_2D); VerifyOpenGLErrors; Panel1.SwapBuffers; end; procedure TForm1.Panel1Resize(Sender: TObject); begin Chromium1.WasResized; end; function TForm1.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 TForm1.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 TForm1.Chromium1BeforeClose(Sender: TObject; const browser: ICefBrowser); begin FCanClose := True; Close; end; procedure TForm1.Chromium1BeforePopup(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 TForm1.Chromium1CursorChange(Sender: TObject; const browser: ICefBrowser; cursor_: TCefCursorHandle; cursorType: TCefCursorType; const customCursorInfo: PCefCursorInfo; var aResult : boolean); begin Panel1.Cursor := CefCursorToWindowsCursor(cursorType); aResult := True; end; procedure TForm1.Chromium1GetScreenInfo(Sender: TObject; const browser: ICefBrowser; var screenInfo: TCefScreenInfo; out Result: Boolean); var TempRect : TCEFRect; TempScale : single; begin TempScale := GlobalCEFApp.DeviceScaleFactor; TempRect.x := 0; TempRect.y := 0; TempRect.width := DeviceToLogical(Panel1.Width, TempScale); TempRect.height := DeviceToLogical(Panel1.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 TForm1.Chromium1GetScreenPoint(Sender: TObject; const browser: ICefBrowser; viewX, viewY: Integer; var screenX, screenY: Integer; out Result: Boolean); var TempScreenPt, TempViewPt : TPoint; TempScale : single; begin TempScale := GlobalCEFApp.DeviceScaleFactor; TempViewPt.x := LogicalToDevice(viewX, TempScale); TempViewPt.y := LogicalToDevice(viewY, TempScale); TempScreenPt := Panel1.ClientToScreen(TempViewPt); screenX := TempScreenPt.x; screenY := TempScreenPt.y; Result := True; end; procedure TForm1.Chromium1GetViewRect(Sender: TObject; const browser: ICefBrowser; var rect: TCefRect); var TempScale : single; begin TempScale := GlobalCEFApp.DeviceScaleFactor; rect.x := 0; rect.y := 0; rect.width := DeviceToLogical(Panel1.Width, TempScale); rect.height := DeviceToLogical(Panel1.Height, TempScale); end; procedure TForm1.Chromium1OpenUrlFromTab(Sender: TObject; const browser: ICefBrowser; const frame: ICefFrame; const targetUrl: ustring; targetDisposition: TCefWindowOpenDisposition; userGesture: Boolean; out 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 TForm1.Chromium1Paint(Sender: TObject; const browser: ICefBrowser; type_: TCefPaintElementType; dirtyRectsCount: NativeUInt; const dirtyRects: PCefRectArray; const buffer: Pointer; aWidth, aHeight: Integer ); var TempRect : TCefRect; i, TempOldWidth, TempOldHeight, TempSkipPixels, TempSkipRows, x, y, w, h : integer; begin if not(InitializeOpenGL) then exit; // Enable 2D textures. glEnable(GL_TEXTURE_2D); VerifyOpenGLErrors; glBindTexture(GL_TEXTURE_2D, FTextureID); VerifyOpenGLErrors; case type_ of PET_VIEW : begin TempOldWidth := FTextureWidth; TempOldHeight := FTextureHeight; FTextureWidth := aWidth; FTextureHeight := aHeight; glPixelStorei(GL_UNPACK_ROW_LENGTH, FTextureWidth); VerifyOpenGLErrors; If (FTextureWidth <> TempOldWidth) or (FTextureHeight <> TempOldHeight) or ((dirtyRectsCount = 1) and (dirtyRects^[0].x = 0) and (dirtyRects^[0].y = 0) and (dirtyRects^[0].width = FTextureWidth) and (dirtyRects^[0].height = FTextureHeight)) then begin // Update/resize the whole texture. glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0); VerifyOpenGLErrors; glPixelStorei(GL_UNPACK_SKIP_ROWS, 0); VerifyOpenGLErrors; glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, FTextureWidth, FTextureHeight, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); VerifyOpenGLErrors; end else begin // Update just the dirty rectangles. i := 0; while (i < dirtyRectsCount) do begin TempRect := dirtyRects^[i]; if (TempRect.x + TempRect.width <= FTextureWidth) and (TempRect.y + TempRect.height <= FTextureHeight) then begin glPixelStorei(GL_UNPACK_SKIP_PIXELS, TempRect.x); VerifyOpenGLErrors; glPixelStorei(GL_UNPACK_SKIP_ROWS, TempRect.y); VerifyOpenGLErrors; glTexSubImage2D(GL_TEXTURE_2D, 0, TempRect.x, TempRect.y, TempRect.width, TempRect.height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); VerifyOpenGLErrors; end; inc(i); end; end; end; PET_POPUP : if (FPopUpRect.Right > FPopUpRect.Left) and (FPopUpRect.Bottom > FPopUpRect.Top) then begin TempSkipPixels := 0; TempSkipRows := 0; x := FPopUpRect.Left; y := FPopUpRect.Top; w := aWidth; h := aHeight; // Adjust the popup to fit inside the view. if (x < 0) then begin TempSkipPixels := -x; x := 0; end; if (y < 0) then begin TempSkipRows := -y; y := 0; end; if (x + w > FTextureWidth) then w := FTextureWidth - x; if (y + h > FTextureHeight) then h := FTextureHeight - y; // Update the popup rectangle. glPixelStorei(GL_UNPACK_ROW_LENGTH, aWidth); VerifyOpenGLErrors; glPixelStorei(GL_UNPACK_SKIP_PIXELS, TempSkipPixels); VerifyOpenGLErrors; glPixelStorei(GL_UNPACK_SKIP_ROWS, TempSkipRows); VerifyOpenGLErrors; glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, w, h, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, buffer); VerifyOpenGLErrors; end; end; // Disable 2D textures. glDisable(GL_TEXTURE_2D); VerifyOpenGLErrors; Panel1.Invalidate; end; procedure TForm1.Chromium1PopupShow(Sender: TObject; const browser: ICefBrowser; aShow: Boolean); begin if aShow then FShowPopUp := True else begin FShowPopUp := False; FPopUpRect := rect(0, 0, 0, 0); if (Chromium1 <> nil) then Chromium1.Invalidate(PET_VIEW); end; end; procedure TForm1.Chromium1PopupSize(Sender: TObject; const browser: ICefBrowser; const rect: PCefRect); 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; procedure TForm1.Chromium1Tooltip(Sender: TObject; const browser: ICefBrowser; var aText: ustring; out Result: Boolean); begin Panel1.hint := UTF8Encode(aText); Panel1.ShowHint := (length(aText) > 0); Result := True; end; procedure TForm1.FormCloseQuery(Sender: TObject; var CanClose: boolean); begin CanClose := FCanClose; if not(FClosing) then begin FClosing := True; Visible := False; Chromium1.CloseBrowser(True); end; end; procedure TForm1.FormCreate(Sender: TObject); begin FTextureID := 0; FTextureWidth := 0; FTextureHeight := 0; FPopUpRect := rect(0, 0, 0, 0); FShowPopUp := False; FCanClose := False; FClosing := False; FFirstLoad := True; ConnectKeyPressReleaseEvents(PGtkWidget(Panel1.Handle)); end; procedure TForm1.FormDestroy(Sender: TObject); begin If (FTextureID <> 0) then glDeleteTextures(1, @FTextureID); end; procedure TForm1.FormHide(Sender: TObject); begin Chromium1.SetFocus(False); Chromium1.WasHidden(True); end; procedure TForm1.FormShow(Sender: TObject); begin if Chromium1.Initialized then begin Chromium1.WasHidden(False); Chromium1.SetFocus(True); end else glGetError(); // Clear OpenGL error cache. end; procedure TForm1.GoBtnEnter(Sender: TObject); begin Chromium1.SetFocus(False); end; procedure TForm1.WMMove(var Message: TLMMove); begin inherited; Chromium1.NotifyMoveOrResizeStarted; end; procedure TForm1.WMSize(var Message: TLMSize); begin inherited; Chromium1.NotifyMoveOrResizeStarted; end; procedure TForm1.VerifyOpenGLErrors; Var TempError : GLenum; begin TempError := glGetError(); if (TempError <> GL_NO_ERROR) then ; WriteLn(StdErr, 'OpenGL error: 0x' + IntToHex(TempError, 8)); end; procedure TForm1.WMWindowPosChanged(var Message: TLMWindowPosChanged); begin inherited; Chromium1.NotifyMoveOrResizeStarted; end; function TForm1.InitializeOpenGL : boolean; begin if FGLInitialized then Result := True else begin Result := False; glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST); VerifyOpenGLErrors; glClearColor(CefColorGetR(Chromium1.Options.BackgroundColor) / 255, CefColorGetG(Chromium1.Options.BackgroundColor) / 255, CefColorGetB(Chromium1.Options.BackgroundColor) / 255, 1); VerifyOpenGLErrors; // necessary for non-power-of-2 textures to render correctly glPixelStorei(GL_UNPACK_ALIGNMENT, 1); VerifyOpenGLErrors; // create the texture glGenTextures(1, @FTextureID); VerifyOpenGLErrors; if (FTextureID = 0) then exit; glBindTexture(GL_TEXTURE_2D, FTextureID); VerifyOpenGLErrors; glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); VerifyOpenGLErrors; glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); VerifyOpenGLErrors; glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); VerifyOpenGLErrors; FGLInitialized := True; Result := True; end; end; end.