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https://github.com/libretro/scummvm.git
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a401f0a19e
All uses of the old target scale API actually wanted to disallow scaling of the mouse cursor. This commit adapts our API to this and thus simplifies backend implementations. Some backends, most notable the Wii and Android, did some implementation of the cursor target scale, which I didn't adapt yet. I added a TODO for the porters there.
145 lines
4.2 KiB
C++
145 lines
4.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef BACKENDS_MODULAR_BACKEND_H
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#define BACKENDS_MODULAR_BACKEND_H
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#include "backends/base-backend.h"
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class GraphicsManager;
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class MutexManager;
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/**
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* Base class for modular backends.
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*
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* It wraps most functions to their manager equivalent, but not
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* all OSystem functions are implemented here.
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*
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* A backend derivated from this class, will need to implement
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* these functions on its own:
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* OSystem::pollEvent()
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* OSystem::getMillis()
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* OSystem::delayMillis()
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* OSystem::getTimeAndDate()
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*
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* And, it should also initialize all the managers variables
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* declared in this class, or override their related functions.
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*/
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class ModularBackend : public BaseBackend {
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public:
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ModularBackend();
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virtual ~ModularBackend();
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/** @name Features */
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//@{
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virtual bool hasFeature(Feature f);
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virtual void setFeatureState(Feature f, bool enable);
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virtual bool getFeatureState(Feature f);
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//@}
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/** @name Graphics */
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//@{
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virtual GraphicsManager *getGraphicsManager();
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virtual const GraphicsMode *getSupportedGraphicsModes() const;
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virtual int getDefaultGraphicsMode() const;
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virtual bool setGraphicsMode(int mode);
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virtual int getGraphicsMode() const;
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virtual void resetGraphicsScale();
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#ifdef USE_RGB_COLOR
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virtual Graphics::PixelFormat getScreenFormat() const;
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virtual Common::List<Graphics::PixelFormat> getSupportedFormats() const;
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#endif
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virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format = NULL);
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virtual int getScreenChangeID() const;
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virtual void beginGFXTransaction();
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virtual OSystem::TransactionError endGFXTransaction();
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virtual int16 getHeight();
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virtual int16 getWidth();
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virtual PaletteManager *getPaletteManager();
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virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
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virtual Graphics::Surface *lockScreen();
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virtual void unlockScreen();
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virtual void fillScreen(uint32 col);
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virtual void updateScreen();
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virtual void setShakePos(int shakeOffset);
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virtual void setFocusRectangle(const Common::Rect& rect);
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virtual void clearFocusRectangle();
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virtual void showOverlay();
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virtual void hideOverlay();
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virtual Graphics::PixelFormat getOverlayFormat() const;
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virtual void clearOverlay();
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virtual void grabOverlay(OverlayColor *buf, int pitch);
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virtual void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h);
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virtual int16 getOverlayHeight();
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virtual int16 getOverlayWidth();
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virtual bool showMouse(bool visible);
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virtual void warpMouse(int x, int y);
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virtual void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const Graphics::PixelFormat *format = NULL);
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virtual void setCursorPalette(const byte *colors, uint start, uint num);
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//@}
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/** @name Mutex handling */
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//@{
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virtual MutexRef createMutex();
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virtual void lockMutex(MutexRef mutex);
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virtual void unlockMutex(MutexRef mutex);
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virtual void deleteMutex(MutexRef mutex);
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//@}
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/** @name Sound */
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//@{
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virtual Audio::Mixer *getMixer();
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//@}
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/** @name Miscellaneous */
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//@{
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virtual void quit();
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virtual void displayMessageOnOSD(const char *msg);
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//@}
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protected:
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/** @name Managers variables */
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//@{
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MutexManager *_mutexManager;
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GraphicsManager *_graphicsManager;
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Audio::Mixer *_mixer;
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//@}
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};
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#endif
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