uilabel.c

嵌入工linux开发的源码

/*********************************************************************/
//	文 件 名：	uiLabel.cpp
//	程序说明：	Label控件
//	程序设计：	产革宏
//				2001.10.19		设计完成		说明文档：R004-S201-0001
//	程序审查：	宋军霞
//				2002.01.22		审查完成		说明文档：R004-S201-0001
//	项目编号：	R004-S201
//	版	  本：	V1.0
//	版    权：	Reality Plus Technology (ShenZhen) Co.,Ltd.
/*********************************************************************/
#include <pr2k.h> 
#include <uiwnd.h>
#include <typedefine.h>
#include <uicontrol.h>
#include <uiUtility.h>
#include <uiGraph.h>
#include <uiLabel.h>
#include <uiSound.h>

#define LABEL_BORDER	0x0003
#define LABEL_ALIGN		0x000c

/*************************<<PRIVATE DEC>>**************************/
static void _guiLabel_Action(HNDL handle , WORD Pen_Type, WORD x , WORD y);
static STATUS _guiLabel_Delete( HNDL handle );
static STATUS _guiLabel_Show( HNDL handle );

/*************************<<PUBLIC FUN>>****************************/
DLL_EXP(HNDL) guiLabel_Create( WORD left, WORD top,WORD right, WORD bottom,const char* caption, WORD style)
{
    TGuiLabel *ptLabel;

    guiEnterWCS() ;
	ptLabel=(TGuiLabel *)kernelMalloc(sizeof(TGuiLabel));
    if(ptLabel == NULL)
    {
		guiExitWCS() ;
        return NULL;
     }

	ptLabel->base.handle =(HNDL)ptLabel;//handle is the pointer which point to this structure,identify the control
	ptLabel->base.type = CONTROL_LABEL;  // indicate the type of the control.
	ptLabel->base.left = left;
	ptLabel->base.top = top;
	ptLabel->base.right = right;
	ptLabel->base.bottom = bottom;
	ptLabel->base.checkFlag = GUI_CONTROL_CHECK_FLAG;//9296 this field would be a special value, it's able to check,the handle available or not
	ptLabel->base.style = style;
	ptLabel->base.status = 0;	//ACTIVE and Visable
    ptLabel->base.font = GUI_DEFAULT_FONT;
	ptLabel->base.vportHandle = NULL;
    ptLabel->base.container = NULL;

	ptLabel->base.actionFun =(PF_ACTION )_guiLabel_Action;
	ptLabel->base.showFun =(PF_SHOW)_guiLabel_Show;
	ptLabel->base.delFun =(PF_DELETE)_guiLabel_Delete;

    ptLabel->fontColor= GUI_BLACK;
    ptLabel->backColor= GUI_WHITE;
    
	if(caption == NULL)
		strcpy((char *)ptLabel->caption,"");
    else 
	{
	    strncpy((char *)ptLabel->caption,(const char *)caption,GUI_LABEL_CAPTION_SIZE);
	    ptLabel->caption[GUI_LABEL_CAPTION_SIZE]='\0';
	}

	guiExitWCS() ;
    return (HNDL)ptLabel;
}

/*---------------------------------------------------------------------------------------*/
DLL_EXP(STATUS) guiLabel_SetCaption ( HNDL handle,const char *caption )
{
	TGuiLabel  *ptLabel;
    
    guiEnterWCS() ;
	if(handle == NULL)
    {
		guiExitWCS() ;
        return STATUS_ERR;
	}

	ptLabel=(TGuiLabel *)handle;
    if(ptLabel->base.checkFlag != GUI_CONTROL_CHECK_FLAG)
    {
		guiExitWCS() ;
        return STATUS_ERR;
    }

	if(caption == NULL)
		strcpy((char *)ptLabel->caption,"");
	else
	{
		strncpy(ptLabel->caption,(const char *)caption,GUI_LABEL_CAPTION_SIZE);
	    ptLabel->caption[GUI_LABEL_CAPTION_SIZE]='\0';
	}

    _guiLabel_Show(handle);
    guiExitWCS();
	return STATUS_OK;
}

/*------------------------------------------------------------------------------------*/
DLL_EXP(char*)  guiLabel_GetCaption ( HNDL handle )
{
	TGuiLabel  *ptLabel;

	if(handle == NULL )
		return NULL;

	ptLabel=(TGuiLabel *)handle;

    if(ptLabel->base.checkFlag != GUI_CONTROL_CHECK_FLAG)
		return NULL;

	return ptLabel->caption;
}

/*------------------------------------------------------------------------------------*/
static STATUS _guiLabel_Delete( HNDL handle )
{
	TGuiLabel *ptLabel;
         
    guiEnterWCS() ;
	if(handle == NULL )
    {
        guiExitWCS() ;
	    return STATUS_ERR;
	}

    ptLabel=(TGuiLabel *)handle;
    if(ptLabel->base.checkFlag  != GUI_CONTROL_CHECK_FLAG )
    {
        guiExitWCS() ;
	    return STATUS_ERR;
    }

	kernelFree((TGuiLabel *)handle);
	ptLabel->base.checkFlag = 0;
    handle = NULL;
    guiExitWCS() ;

	return STATUS_OK;
}

/*-------------------------------------------------------------------------------*/
static STATUS _guiLabel_Show(HNDL handle)
{
	TGuiLabel *ptLabel;
    WORD  style;
    short x,y;
    short sHeigth,sWidth;
    short left,right,top,bottom;
	short offset;
   
    if(handle == NULL)
	    return STATUS_ERR; 

    guiEnterWCS() ;
    if(guiControl_IsVisible(handle) == FALSE)
    {
		guiExitWCS() ;
		return STATUS_ERR;
	}

    ptLabel=(TGuiLabel *)handle;
    if(ptLabel->base.checkFlag!=GUI_CONTROL_CHECK_FLAG)
    {
		guiExitWCS() ;
        return STATUS_ERR;
    } 

    left = 0;
    right = ptLabel->base.right-ptLabel->base.left;
    top = 0;
    bottom = ptLabel->base.bottom-ptLabel->base.top;     
    style = ptLabel->base.style;

	guiClearBlock(handle,left,top,right,bottom,ptLabel->backColor,0);
	guiPushFont(ptLabel->base.font) ;
    sWidth = guiGetStringWidth((char *)ptLabel->caption) ;
    sHeigth = guiGetCharHeight();

	offset=2;
    switch( style & LABEL_BORDER)//BORDER STYLE
    {
    case LABEL_BORDER_SOLID:
        guiDrawRect(handle,left,top,right,bottom,ptLabel->fontColor,GUI_SOLID);
        break;
    case LABEL_BORDER_HATCH:
        guiDrawRect(handle,left,top,right,bottom,ptLabel->fontColor,GUI_HATCH);
        break;
    default:
		offset=0;
        break;
    }  	

    y = getAlignCenter(0,bottom,sHeigth);
    switch(style & LABEL_ALIGN)//TEXT ALIGNMENT STYLE
    {
    case LABEL_ALIGN_CENTER:
        x = getAlignCenter(offset,right-offset,sWidth);
        guiShowString(handle,(char *)ptLabel->caption,x,y,ptLabel->fontColor,0);
        break;
    case LABEL_ALIGN_RIGHT:
        x = getAlignRight(offset,right-offset,sWidth);
        guiShowString(handle,(char *)ptLabel->caption,x, y,ptLabel->fontColor,0);
        break;
    default:        
        x = offset;
       	guiShowString(handle,(char *)ptLabel->caption,x,y ,ptLabel->fontColor,0);
        break;
    }
    guiPopFont();
    
    guiExitWCS() ;
	return STATUS_OK;
}

/********************************PRIVATE FUN>>*********************/
static void _guiLabel_Action(HNDL handle , WORD Pen_Type, WORD x , WORD y)
{
	TGuiLabel *ptLabel;
	TGuiMessage tMessage; 

	if(handle == NULL)
		return;

	ptLabel=(TGuiLabel *)handle;
	if(	ptLabel->base.checkFlag != GUI_CONTROL_CHECK_FLAG)
		return;

	if(	ptLabel->base.status & CONTROL_NOT_ACTIVE)
		return;

    if(Pen_Type == PENUP)
    {
        _guiLabel_Show(handle);
		tMessage.handle = handle;
		tMessage.messageType=LABEL_CLICK;
		tMessage.x=x;
		tMessage.y=y;
        guiEnqueue(gpTopWindow->messageQueue,&tMessage);
		guiPenSound();
    }
	return;
}