initial checkin

MAC_SDK/Source/MACLib/MACProgressHelper.cpp

@@ -0,0 +1,82 @@
+#include "All.h"
+#include "MACProgressHelper.h"
+
+CMACProgressHelper::CMACProgressHelper(int nTotalSteps, int * pPercentageDone, APE_PROGRESS_CALLBACK ProgressCallback, int * pKillFlag)
+{
+    m_pKillFlag = pKillFlag;
+    
+    m_bUseCallback = FALSE;
+    if (ProgressCallback != NULL)
+    {
+        m_bUseCallback = TRUE;
+        m_CallbackFunction = ProgressCallback;
+    }
+
+    m_pPercentageDone = pPercentageDone;
+
+    m_nTotalSteps = nTotalSteps;
+    m_nCurrentStep = 0;
+    m_nLastCallbackFiredPercentageDone = 0;
+
+    UpdateProgress(0);
+}
+
+CMACProgressHelper::~CMACProgressHelper()
+{
+
+}
+
+void CMACProgressHelper::UpdateProgress(int nCurrentStep, BOOL bForceUpdate)
+{
+    // update the step
+    if (nCurrentStep == -1)
+        m_nCurrentStep++;
+    else
+        m_nCurrentStep = nCurrentStep;
+
+    // figure the percentage done
+    float fPercentageDone = float(m_nCurrentStep) / float(max(m_nTotalSteps, 1));
+    int nPercentageDone = (int) (fPercentageDone * 1000 * 100);
+    if (nPercentageDone > 100000) nPercentageDone = 100000;
+
+    // update the percent done pointer
+    if (m_pPercentageDone)
+    {
+        *m_pPercentageDone = nPercentageDone;
+    }
+
+    // fire the callback
+    if (m_bUseCallback)
+    {
+        if (bForceUpdate || (nPercentageDone - m_nLastCallbackFiredPercentageDone) >= 1000)
+        {
+            m_CallbackFunction(nPercentageDone);
+            m_nLastCallbackFiredPercentageDone = nPercentageDone;
+        }
+    }
+}
+
+int CMACProgressHelper::ProcessKillFlag(BOOL bSleep)
+{
+    // process any messages (allows repaint, etc.)
+    if (bSleep)
+    {
+        PUMP_MESSAGE_LOOP
+    }
+
+    if (m_pKillFlag)
+    {
+        while (*m_pKillFlag == KILL_FLAG_PAUSE)
+        {
+            SLEEP(50);
+            PUMP_MESSAGE_LOOP
+        }
+
+        if ((*m_pKillFlag != KILL_FLAG_CONTINUE) && (*m_pKillFlag != KILL_FLAG_PAUSE))
+        {
+            return -1;
+        }
+    }
+
+    return ERROR_SUCCESS;
+}