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/*
gadget.h
Base header file for Dave Malcolm's user interface "gadget" code.
Note to "C" programmers: look at the bottom of this file
*/
#ifndef _gadget
#define _gadget 1
#ifdef __cplusplus
extern "C" {
#endif
/* Version settings *****************************************************/
#define UseGadgets Yes
/* If this is set to No all gadget code collapses to void macros */
#define EnableStatusPanels No
/* Constants ***********************************************************/
#define HUD_SPACING 20
/* Macros ***************************************************************/
/* Type definitions *****************************************************/
#if UseGadgets
#ifndef _projtext
#include "projtext.h"
#endif
#ifdef __cplusplus
#ifndef _r2base
#include "r2base.h"
#endif
class Gadget
{
public:
// Pure virtual render method:
virtual void Render
(
const struct r2pos& R2Pos,
const struct r2rect& R2Rect_Clip,
int FixP_Alpha
) = 0;
// Render yourself at the coordinates given, clipped by the clipping rectangle
// Note that the position need not be at all related to the clipping rectangle;
// it's up to the implementation to behave for these cases.
// Both the coordinate and the clipping rectangle are in absolute screen coordinates
// The alpha value to use is "absolute"
virtual ~Gadget();
// ensure virtual destructor
#if debug
char* GetDebugName(void);
void Render_Report
(
const struct r2pos& R2Pos,
const struct r2rect& R2Rect_Clip,
int FixP_Alpha
);
// use to textprint useful information about a call to "Render"
#endif
protected:
// Protected constructor since abstract base class
#if debug
Gadget
(
char* DebugName_New
) : DebugName( DebugName_New )
{
// empty
}
#else
Gadget(){}
#endif
private:
#if debug
char* DebugName;
#endif
}; // end of class Gadget
// Inline methods:
#if debug
inline char* Gadget::GetDebugName(void)
{
return DebugName;
}
#endif
#if 0
class GadgetWithSize : public Gadget
{
// Friends
// Protected data:
protected:
r2size R2Size_Val;
// Public methods:
public:
r2size GetSize(void) const;
void SetSize(r2size R2Size);
virtual void SetSize_PostProcessing(void) {}
// Protected methods:
protected:
// Protected constructor since abstract class
// (It's abstract since Render() remains pure virtual )
GadgetWithSize
(
#if debug
char* DebugName_New,
#endif
r2size R2Size_New
) : Gadget
(
#if debug
DebugName_New
#endif
),
R2Size_Val( R2Size_New ) {}
// Private methods:
private:
// Private data:
private:
// Inline methods:
public:
r2size GetSize(void) const
{
return R2Size_Val;
}
void SetSize( r2size R2Size_New )
{
R2Size_Val = R2Size_New;
SetSize_PostProcessing();
}
protected:
private:
}; // end of class GadgetWithSize
#endif
#endif /* __cplusplus */
#endif /* UseGadgets */
/* Exported globals *****************************************************/
/* Function prototypes **************************************************/
#if UseGadgets
extern void GADGET_Init(void);
/* expects to be called at program boot-up time */
extern void GADGET_UnInit(void);
/* expects to be called at program shutdown time */
extern void GADGET_Render(void);
/* expects to be called within the rendering part of the main loop */
extern void GADGET_ScreenModeChange_Setup(void);
/* expects to be called immediately before anything happens to the screen
mode */
extern void GADGET_ScreenModeChange_Cleanup(void);
/* expects to be called immediately after anything happens to the screen
mode */
extern void GADGET_NewOnScreenMessage( ProjChar* messagePtr );
extern void RemoveTheConsolePlease(void);
#else /* UseGadgets */
#define GADGET_Init() ((void) 0)
#define GADGET_UnInit() ((void) 0)
#define GADGET_Render() ((void) 0)
#define GADGET_ScreenModeChange_Setup() ((void) 0)
#define GADGET_ScreenModeChange_Cleanup() ((void) 0)
#define GADGET_NewOnScreenMessage(x) ((void) 0)
#endif /* UseGadgets */
/* End of the header ****************************************************/
#ifdef __cplusplus
};
#endif
#endif
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