cpi_interfacepart_commandbutton.c

VC++视频开发实例集锦(包括“远程视频监控”"语音识别系统"等13个经典例子)

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#include "stdafx.h"
#include "globals.h"
#include "CPI_InterfacePart.h"


////////////////////////////////////////////////////////////////////////////////
//
typedef struct _CPs_IPCommandButton
{
    CPs_Image_WithState* m_pStateImage;
    CPe_ImageState m_enCurrentState;
    wp_Verb m_pfnVerb;
    BOOL m_bDown;

} CPs_IPCommandButton;
//
////////////////////////////////////////////////////////////////////////////////



void IPCB_Destroy_PrivateData(CP_HINTERFACEPART hPart);
void IPCB_Draw(CP_HINTERFACEPART hPart, CPs_DrawContext* pContext);
void IPCB_onMouseIn(CP_HINTERFACEPART hPart);
void IPCB_onMouseOut(CP_HINTERFACEPART hPart);
void IPCB_onMouseButton_LDown(CP_HINTERFACEPART hPart, const POINTS ptMouse);
void IPCB_onMouseButton_LUp(CP_HINTERFACEPART hPart, const POINTS ptMouse);
////////////////////////////////////////////////////////////////////////////////
//
//
//
CP_HINTERFACEPART IP_Create_CommandButton(wp_Verb pfnVerb, CPs_Image_WithState* pImageWS)
{
    CPs_InterfacePart* pNewPart;
    CPs_IPCommandButton* pCustomData;

    // Setup custom data
    pCustomData = (CPs_IPCommandButton*)malloc(sizeof(*pCustomData));
    pCustomData->m_pStateImage = pImageWS;
    pCustomData->m_enCurrentState = igsQuiescent;
    pCustomData->m_pfnVerb = pfnVerb;
    pCustomData->m_bDown = FALSE;

    // Create new part and setup callbacks
    pNewPart = (CPs_InterfacePart*)malloc(sizeof(*pNewPart));
    memset(pNewPart, 0, sizeof(*pNewPart));
    pNewPart->Destroy_PrivateData = IPCB_Destroy_PrivateData;
    pNewPart->Draw = IPCB_Draw;
    pNewPart->onMouseIn = IPCB_onMouseIn;
    pNewPart->onMouseOut = IPCB_onMouseOut;
    pNewPart->onMouseButton_LDown = IPCB_onMouseButton_LDown;
    pNewPart->onMouseButton_LUp = IPCB_onMouseButton_LUp;
    pNewPart->m_pPrivateData = pCustomData;

    return pNewPart;
}
//
//
//
void IPCB_Draw(CP_HINTERFACEPART hPart, CPs_DrawContext* pContext)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    // Perform drawing
    CPIG_DrawStateImage(pContext,
                        pIP->m_rLocation.left, pIP->m_rLocation.top,
                        pIPCB->m_pStateImage, pIPCB->m_enCurrentState);
}
//
//
//
void IPCB_Destroy_PrivateData(CP_HINTERFACEPART hPart)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    free(pIPCB);
}
//
//
//
void IPCB_onMouseIn(CP_HINTERFACEPART hPart)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    // Handler
    if(pIPCB->m_bDown)
        pIPCB->m_enCurrentState = igsActive;
    else
        pIPCB->m_enCurrentState = igsFloatActive;
    IP_Invalidate(hPart);
}
//
//
//
void IPCB_onMouseOut(CP_HINTERFACEPART hPart)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    // Handler
    pIPCB->m_enCurrentState = igsQuiescent;
    IP_Invalidate(hPart);
}
//
//
//
void IPCB_onMouseButton_LDown(CP_HINTERFACEPART hPart, const POINTS ptMouse)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    // Handler
    pIPCB->m_bDown = TRUE;
    if(pIPCB->m_enCurrentState == igsFloatActive)
        pIPCB->m_enCurrentState = igsActive;
    IP_Invalidate(hPart);
}
//
//
//
void IPCB_onMouseButton_LUp(CP_HINTERFACEPART hPart, const POINTS ptMouse)
{
    CPs_InterfacePart* pIP;
    CPs_IPCommandButton* pIPCB;

    // Init
    pIP = (CPs_InterfacePart*)hPart;
    CP_CHECKOBJECT(pIP);
    pIPCB = (CPs_IPCommandButton*)pIP->m_pPrivateData;
    CP_CHECKOBJECT(pIPCB);

    // Handler
    pIPCB->m_bDown = FALSE;
    if(pIPCB->m_enCurrentState == igsActive)
    {
        // Mouse is still inside control
        pIPCB->m_enCurrentState = igsFloatActive;
        if(pIPCB->m_pfnVerb)
            pIPCB->m_pfnVerb(vaDoVerb, NULL);
    }
    IP_Invalidate(hPart);
}
//
//
//