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/** 
 * @file llwindowmacosx.h
 * @brief Mac implementation of LLWindow class
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLWINDOWMACOSX_H
#define LL_LLWINDOWMACOSX_H

#include "llwindow.h"
#include "llwindowcallbacks.h"
#include "llwindowmacosx-objc.h"

#include "lltimer.h"

#include <ApplicationServices/ApplicationServices.h>
#include <OpenGL/OpenGL.h>

// AssertMacros.h does bad things.
#include "fix_macros.h"
#undef verify
#undef require

class LLWindowMacOSX : public LLWindow
{
public:
	void show() override;
	void hide() override;
	void close() override;
	BOOL getVisible() override;
	BOOL getMinimized() override;
	BOOL getMaximized() override;
	BOOL maximize() override;
	void minimize() override;
	void restore() override;
	BOOL getFullscreen();
	BOOL getPosition(LLCoordScreen *position) override;
	BOOL getSize(LLCoordScreen *size) override;
	BOOL getSize(LLCoordWindow *size) override;
	BOOL setPosition(LLCoordScreen position) override;
	BOOL setSizeImpl(LLCoordScreen size) override;
	BOOL setSizeImpl(LLCoordWindow size) override;
	BOOL switchContext(BOOL fullscreen, const LLCoordScreen &size, BOOL enable_vsync, const LLCoordScreen * const posp = NULL) override;
	BOOL setCursorPosition(LLCoordWindow position) override;
	BOOL getCursorPosition(LLCoordWindow *position) override;
	void showCursor() override;
	void hideCursor() override;
	void showCursorFromMouseMove() override;
	void hideCursorUntilMouseMove() override;
	BOOL isCursorHidden() override;
	void updateCursor() override;
	ECursorType getCursor() const override;
	void captureMouse() override;
	void releaseMouse() override;
	void setMouseClipping( BOOL b ) override;
	BOOL isClipboardTextAvailable() override;
	BOOL pasteTextFromClipboard(LLWString &dst) override;
	BOOL copyTextToClipboard(const LLWString & src) override;
	void flashIcon(F32 seconds) override;
	F32 getGamma() override;
	BOOL setGamma(const F32 gamma) override; // Set the gamma
	U32 getFSAASamples() override;
	void setFSAASamples(const U32 fsaa_samples) override;
	BOOL restoreGamma() override;			// Restore original gamma table (before updating gamma)
	ESwapMethod getSwapMethod() override { return mSwapMethod; }
	void gatherInput() override;
	void delayInputProcessing() override {};
	void swapBuffers() override;
	
	// handy coordinate space conversion routines
	BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to) override;
	BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to) override;
	BOOL convertCoords(LLCoordWindow from, LLCoordGL *to) override;
	BOOL convertCoords(LLCoordGL from, LLCoordWindow *to) override;
	BOOL convertCoords(LLCoordScreen from, LLCoordGL *to) override;
	BOOL convertCoords(LLCoordGL from, LLCoordScreen *to) override;

	LLWindowResolution* getSupportedResolutions(S32 &num_resolutions) override;
	F32	getNativeAspectRatio() override;
	F32 getPixelAspectRatio() override;
	void setNativeAspectRatio(F32 ratio) override { mOverrideAspectRatio = ratio; }

	// query VRAM usage
    /*virtual*/ U32 getAvailableVRAMMegabytes() override;

	void beforeDialog() override;
	void afterDialog() override;

	BOOL dialogColorPicker(F32 *r, F32 *g, F32 *b) override;

	void *getPlatformWindow() override;
	void bringToFront() override {};
	
	void allowLanguageTextInput(LLPreeditor *preeditor, BOOL b) override;
	void interruptLanguageTextInput() override;
	void spawnWebBrowser(const std::string& escaped_url, bool async) override;
	F32 getSystemUISize() override;
    
    bool getInputDevices(U32 device_type_filter,
                         std::function<bool(std::string&, LLSD&, void*)> osx_callback,
                         void* win_callback,
                         void* userdata) override;

	static std::vector<std::string> getDisplaysResolutionList();

	static std::vector<std::string> getDynamicFallbackFontList();

	// Provide native key event data
	LLSD getNativeKeyData() override;
	
	void* getWindow() { return mWindow; }
	LLWindowCallbacks* getCallbacks() { return mCallbacks; }
	LLPreeditor* getPreeditor() { return mPreeditor; }
	
	void updateMouseDeltas(float* deltas);
	void getMouseDeltas(float* delta);
	
	void handleDragNDrop(std::string url, LLWindowCallbacks::DragNDropAction action);
    
    bool allowsLanguageInput() { return mLanguageTextInputAllowed; }

    //create a new GL context that shares a namespace with this Window's main GL context and make it current on the current thread
    // returns a pointer to be handed back to destroySharedConext/makeContextCurrent
    void* createSharedContext() override;
    //make the given context current on the current thread
    void makeContextCurrent(void* context) override;
    //destroy the given context that was retrieved by createSharedContext()
    //Must be called on the same thread that called createSharedContext()
    void destroySharedContext(void* context) override;

    void toggleVSync(bool enable_vsync) override;

protected:
	LLWindowMacOSX(LLWindowCallbacks* callbacks,
		const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,
		BOOL fullscreen, BOOL clearBg, BOOL enable_vsync, BOOL use_gl,
		BOOL ignore_pixel_depth,
		U32 fsaa_samples);
		~LLWindowMacOSX();

	void	initCursors();
	BOOL	isValid() override;
	void	moveWindow(const LLCoordScreen& position,const LLCoordScreen& size);


	// Changes display resolution. Returns true if successful
	BOOL	setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);

	// Go back to last fullscreen display resolution.
	BOOL	setFullscreenResolution();

	// Restore the display resolution to its value before we ran the app.
	BOOL	resetDisplayResolution();

	BOOL	shouldPostQuit() { return mPostQuit; }
    
    //Satisfy MAINT-3135 and MAINT-3288 with a flag.
    /*virtual */ void setOldResize(bool oldresize) override {setResizeMode(oldresize, mGLView); }

private:
    void restoreGLContext();

protected:
	//
	// Platform specific methods
	//

	// create or re-create the GL context/window.  Called from the constructor and switchContext().
	BOOL createContext(int x, int y, int width, int height, int bits, BOOL fullscreen, BOOL enable_vsync);
	void destroyContext();
	void setupFailure(const std::string& text, const std::string& caption, U32 type);
	void adjustCursorDecouple(bool warpingMouse = false);
	static MASK modifiersToMask(S16 modifiers);
	
#if LL_OS_DRAGDROP_ENABLED
	
	//static OSErr dragTrackingHandler(DragTrackingMessage message, WindowRef theWindow, void * handlerRefCon, DragRef theDrag);
	//static OSErr dragReceiveHandler(WindowRef theWindow, void * handlerRefCon,	DragRef theDrag);
	
	
#endif // LL_OS_DRAGDROP_ENABLED
	
	//
	// Platform specific variables
	//
	
	// Use generic pointers here.  This lets us do some funky Obj-C interop using Obj-C objects without having to worry about any compilation problems that may arise.
	NSWindowRef			mWindow;
	GLViewRef			mGLView;
	CGLContextObj		mContext;
	CGLPixelFormatObj	mPixelFormat;
	CGDirectDisplayID	mDisplay;
	
	LLRect		mOldMouseClip;  // Screen rect to which the mouse cursor was globally constrained before we changed it in clipMouse()
	std::string mWindowTitle;
	double		mOriginalAspectRatio;
	BOOL		mSimulatedRightClick;
	U32			mLastModifiers;
	BOOL		mHandsOffEvents;	// When true, temporarially disable CarbonEvent processing.
	// Used to allow event processing when putting up dialogs in fullscreen mode.
	BOOL		mCursorDecoupled;
	S32			mCursorLastEventDeltaX;
	S32			mCursorLastEventDeltaY;
	BOOL		mCursorIgnoreNextDelta;
	BOOL		mNeedsResize;		// Constructor figured out the window is too big, it needs a resize.
	LLCoordScreen   mNeedsResizeSize;
	F32			mOverrideAspectRatio;
	BOOL		mMaximized;
	BOOL		mMinimized;
	U32			mFSAASamples;
	BOOL		mForceRebuild;
	
	S32	mDragOverrideCursor;

	// Input method management through Text Service Manager.
	BOOL		mLanguageTextInputAllowed;
	LLPreeditor*	mPreeditor;
	
public:
	static BOOL	sUseMultGL;

	friend class LLWindowManager;
	
};


class LLSplashScreenMacOSX : public LLSplashScreen
{
public:
	LLSplashScreenMacOSX();
	virtual ~LLSplashScreenMacOSX();

	void showImpl();
	void updateImpl(const std::string& mesg);
	void hideImpl();

private:
	WindowRef   mWindow;
};

S32 OSMessageBoxMacOSX(const std::string& text, const std::string& caption, U32 type);

void load_url_external(const char* url);

#endif //LL_LLWINDOWMACOSX_H