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gdriver.h
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C/C++ Source or Header
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1997-10-06
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2KB
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55 lines
/*******************************************************************
*
* gdriver.h : Graphics utility driver generic interface 1.1
*
* Generic interface for all drivers of the graphics utility used
* by the FreeType test programs.
*
* Copyright 1996, 1997 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used
* modified and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
******************************************************************/
#ifndef GDRIVER_H
#define GDRIVER_H
/* Note that we now support an event based model, even with */
/* full-screen modes. It is the responsability of the driver */
/* to map its events to the TEvent structure when called */
/* through Get_Event. */
/* the event classes are defined in the file 'gevents.h' included */
/* by the test programs, not by the graphics utility. */
typedef struct _TEvent
{
int what; /* event class */
int info; /* event parameter */
} TEvent;
/* get last event. In full-screen modes, a keystroke must be */
/* translated to an event class with a parameter. */
void Get_Event( TEvent* event );
/* a call to this function must set the graphics mode, the Vio */
/* variable, as well as the values vio_ScanLineWidth, vio_Width */
/* and vio_Height. */
int Driver_Set_Graphics( int mode );
/* restore previous mode or release display buffer/window */
int Driver_Restore_Mode();
/* display bitmap on screen */
int Driver_Display_Bitmap( char* buffer, int line, int col );
#endif /* GDRIVER_H */
/* End */