mirror of https://github.com/OpenTTD/OpenTTD.git
105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file video_driver.hpp Base of all video drivers. */
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#ifndef VIDEO_VIDEO_DRIVER_HPP
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#define VIDEO_VIDEO_DRIVER_HPP
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#include "../driver.h"
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#include "../core/geometry_type.hpp"
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/** The base of all video drivers. */
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class VideoDriver: public Driver {
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public:
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/**
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* Mark a particular area dirty.
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* @param left The left most line of the dirty area.
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* @param top The top most line of the dirty area.
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* @param width The width of the dirty area.
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* @param height The height of the dirty area.
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*/
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virtual void MakeDirty(int left, int top, int width, int height) = 0;
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/**
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* Perform the actual drawing.
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*/
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virtual void MainLoop() = 0;
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/**
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* Change the resolution of the window.
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* @param w The new width.
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* @param h The new height.
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* @return True if the change succeeded.
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*/
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virtual bool ChangeResolution(int w, int h) = 0;
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/**
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* Change the full screen setting.
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* @param fullscreen The new setting.
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* @return True if the change succeeded.
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*/
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virtual bool ToggleFullscreen(bool fullscreen) = 0;
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/**
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* Callback invoked after the blitter was changed.
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* @return True if no error.
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*/
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virtual bool AfterBlitterChange()
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{
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return true;
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}
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virtual bool ClaimMousePointer()
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{
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return true;
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}
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/**
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* Whether the driver has a graphical user interface with the end user.
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* Or in other words, whether we should spawn a thread for world generation
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* and NewGRF scanning so the graphical updates can keep coming. Otherwise
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* progress has to be shown on the console, which uses by definition another
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* thread/process for display purposes.
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* @return True for all drivers except null and dedicated.
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*/
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virtual bool HasGUI() const
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{
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return true;
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}
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};
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/** Base of the factory for the video drivers. */
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class VideoDriverFactoryBase: public DriverFactoryBase {
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};
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/**
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* Factory for the video drivers.
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* @tparam T The type of the video factory to register.
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*/
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template <class T>
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class VideoDriverFactory: public VideoDriverFactoryBase {
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public:
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VideoDriverFactory() { this->RegisterDriver(((T *)this)->GetName(), Driver::DT_VIDEO, ((T *)this)->priority); }
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/**
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* Get the long, human readable, name for the Driver-class.
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*/
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const char *GetName();
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};
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extern VideoDriver *_video_driver;
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extern char *_ini_videodriver;
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extern int _num_resolutions;
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extern Dimension _resolutions[32];
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extern Dimension _cur_resolution;
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extern bool _rightclick_emulate;
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#endif /* VIDEO_VIDEO_DRIVER_HPP */
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