uicaret.c

来自「一个PDA GUI系统的源码」· C语言 代码 · 共 132 行

/*---------------------------- INCLUDE FILES --------------------------------*/
#include <pr2k.h>
#include <uiwnd.h>
#include <uicaret.h>

/*------------------------ GLOBALS (INTERNAL) -------------------------------*/
static TCaret    gSystemCaret={0,0,0,0,0,0,0};


//-------------------------- function declare ---------------------------------
void _guiCaret_Draw( void );


/*------------------------- FUNCTION BODIES ---------------------------------*/
//called by rtc;
void guiCaret_Draw( void )
{
	HNDL hFocusText;
	if (gSystemCaret.bEnable==FALSE||gSystemCaret.bVisible==FALSE) 
	{
		return;
	}

	hFocusText=guiTextEdit_QueryFocus();
	if(guiControl_IsVisible(hFocusText)==FALSE)
	{
		return;
	}
	
	_guiCaret_Draw();	    
}


DLL_EXP(void) guiCaret_Create( BYTE nWidth, BYTE nHeight )
{
    gSystemCaret.nWidth   = nWidth;
    gSystemCaret.nHeight  = nHeight;    
    gSystemCaret.bVisible = FALSE;
    gSystemCaret.bState   = OFF;
	gSystemCaret.bEnable=TRUE;
}


DLL_EXP(void) guiCaret_ChangeSize( BYTE nWidth, BYTE nHeight )
{
    gSystemCaret.nWidth   = nWidth;
    gSystemCaret.nHeight  = nHeight;
}


DLL_EXP(void) guiCaret_SetPos( short ixPos, short iyPos )
{
    gSystemCaret.ixPos = ixPos;
    gSystemCaret.iyPos = iyPos;
}


DLL_EXP(void) guiCaret_GetPos( short* ixPos, short* iyPos )
{
    *ixPos = gSystemCaret.ixPos;
    *iyPos = gSystemCaret.iyPos;
}


DLL_EXP(void) guiCaret_Show( void )
{
    /* Caret already shown. */
    if (gSystemCaret.bVisible==TRUE)
	{
		return;
	}
	
    /* Shows the caret. */
	gSystemCaret.bState = OFF;

	if(gSystemCaret.bEnable==TRUE)
	{
		_guiCaret_Draw();
	}

    gSystemCaret.bVisible = TRUE;
}


DLL_EXP(BOOL) guiCaret_Hide( void )
{
    if (gSystemCaret.bVisible==FALSE) 
	{
		return FALSE;
	}
	
	gSystemCaret.bVisible  = FALSE;

    if(gSystemCaret.bState==ON&&gSystemCaret.bEnable==TRUE)
	{
		_guiCaret_Draw();
	}

    return TRUE;
}


DLL_EXP(void) guiCaret_Enable( void )
{
	gSystemCaret.bEnable=TRUE;
}


DLL_EXP(void) guiCaret_Disable( void )
{
	if(gSystemCaret.bEnable==FALSE)
	{
		return;
	}
	gSystemCaret.bEnable=FALSE;
	
	if(gSystemCaret.bVisible==TRUE&&gSystemCaret.bState==ON)
	{
		_guiCaret_Draw();
	}
}

//---------------------------- internal function ------------------------------
void _guiCaret_Draw( void )
{
	gSystemCaret.bState = !gSystemCaret.bState;
    guiInvertRect (0,  gSystemCaret.ixPos, gSystemCaret.iyPos,
        (gSystemCaret.ixPos+gSystemCaret.nWidth-1), (gSystemCaret.iyPos+gSystemCaret.nHeight-1));   
}