/************************************************************************
Function: WORD JPEGMsgCallback(WORD objMsg, OBJ_HEADER* pObj,
GOL_MSG* pMsg)
Overview: This function is called by GOLMsg() function when in this
particular demo each time the valid message is received for the
objects in the demo.
Input: objMsg - translated message for the object,
pObj - pointer to the object,
pMsg - pointer to the non-translated, raw GOL message
Output: If the function returns non-zero the message will
be processed by the object directly affected by the message.
Default action on the object based on the message will be
performed.
************************************************************************/
WORD JPEGMsgCallback(WORD objMsg, OBJ_HEADER *pObj, GOL_MSG *pMsg)
{
LISTITEM *pItemSel;
// check if an image is being shown
if((blImageOnScreen == 1) || (blSlideShowOn == 1))
{
// this is the routine to go back and show the list when an
// image is being shown on the screen or the slide show is
// currently ongoing
if(pMsg->uiEvent == EVENT_RELEASE)
{
blImageOnScreen = 0;
blSlideShowOn = 0;
GOLRedrawRec(0, 0, GetMaxX(), GetMaxY());
}
return (0);
}
switch(GetObjID(pObj))
{
case ID_BUTTON_A:
if(objMsg == BTN_MSG_RELEASED)
{ // check if button is pressed
// do not process if user moved the touch away from the button
// returning 1 wil update the button
if(pMsg->uiEvent == EVENT_MOVE)
return (1);
screenState = CREATE_DEMOSELECTION;
}
return (1);
case ID_BUTTON_D:
if(objMsg == BTN_MSG_RELEASED)
{ // check if button is pressed
// do not process if user moved the touch away from the button
// returning 1 wil update the button
if(pMsg->uiEvent == EVENT_MOVE)
return (1);
// enable the slide show
blSlideShowOn = 1;
// initialize the screen
SetColor(BLACK);
ClearDevice();
ClrState(pObj, BTN_PRESSED); // clear the pressed state, will be shown only when redrawn
blSlideShowDelay = 0; // force slide show to immediately start
return (0);
}
return (1);
case ID_JPGLISTBOX:
if(pMsg->uiEvent == EVENT_MOVE)
{
pMsg->uiEvent = EVENT_PRESS; // change event for listbox
// Process message by default
LbMsgDefault(objMsg, (LISTBOX *)pObj, pMsg);
// Set new list box position
SldSetPos(pSlider, LbGetCount(pListBox) - LbGetFocusedItem(pListBox) - 1);
SetState(pSlider, SLD_DRAW_THUMB);
pMsg->uiEvent = EVENT_MOVE; // restore event for listbox
}
else if(pMsg->uiEvent == EVENT_PRESS)
{
// call the message default processing of the list box to select the item
LbMsgDefault(objMsg, (LISTBOX *)pObj, pMsg);
}
else if(pMsg->uiEvent == EVENT_RELEASE)
{
// check which item was selected and display appropriate screen
pItemSel = LbGetSel(pListBox, NULL); // get the selected item
if(aFolderElement[pItemSel->data].blFolder == 1)
{
if(FSchdir(aFolderElement[pItemSel->data].Name) == 0)
{
FillNewElements();
return (1);
}
}
else if(aFolderElement[pItemSel->data].blText == 0)
{
IMG_FILE *pImgFile = IMG_FOPEN(aFolderElement[pItemSel->data].Name, "rb");
if(pImgFile != NULL)
{
blImageOnScreen = 1;
// initialize the screen
SetColor(BLACK);
ClearDevice();
if
(
ImageDecode
(
pImgFile,
aFolderElement[pItemSel->data].ImgType,
0,
0,
IMG_SCREEN_WIDTH,
IMG_SCREEN_HEIGHT,
(IMG_DOWN_SCALE | IMG_ALIGN_CENTER),
NULL,
NULL
)
)
{
DisplayErrorInfo();
}
IMG_FCLOSE(pImgFile);
}
}
}
// The message was processed. To avoid other objects processing the
// processed message reset the message.
pMsg->uiEvent = EVENT_INVALID;
return (0);
case ID_SLD4LB:
if((objMsg == SLD_MSG_INC) || (objMsg == SLD_MSG_DEC))
{ // check slider was touched.
// Process message by default
SldMsgDefault(objMsg, (SLIDER *)pObj, pMsg);
// Set new list box position
if(LbGetFocusedItem(pListBox) != LbGetCount(pListBox) - SldGetPos(pSlider))
{
LbSetFocusedItem(pListBox, LbGetCount(pListBox) - SldGetPos(pSlider));
SetState(pListBox, LB_DRAW_ITEMS);
}
}
// The message was processed
return (0);
case ID_BTNUP4LB: // slider up button was pressed
if(objMsg == BTN_MSG_RELEASED)
{
// check if we have reached the very first then stay there.
if (LbGetFocusedItem(pListBox) == 0)
LbSetFocusedItem(pListBox,0);
else
LbSetFocusedItem(pListBox,LbGetFocusedItem(pListBox)-1);
SetState(pListBox, LB_DRAW_ITEMS);
SldSetPos(pSlider, SldGetPos(pSlider) + 1);
SetState(pSlider, SLD_DRAW_THUMB);
}
return (1);
case ID_BTNDN4LB: // slider down button was pressed
if(objMsg == BTN_MSG_RELEASED)
{
// set all items to be not displayed
pItemSel = pListBox->pItemList;
while(pItemSel != NULL) {
pItemSel->status = 0;
pItemSel = pItemSel->pNextItem;
}
LbSetFocusedItem(pListBox, LbGetFocusedItem(pListBox) + 1);
SetState(pListBox, LB_DRAW_ITEMS);
SldSetPos(pSlider, SldGetPos(pSlider) - 1);
SetState(pSlider, SLD_DRAW_THUMB);
}
return (1);
}
return (1);
}
/*********************************************************************
* Function: void GOLMsg(GOL_MSG *pMsg)
*
* PreCondition: none
*
* Input: pointer to the message
*
* Output: none
*
* Side Effects: none
*
* Overview: processes message for all objects in the liked list
*
* Note: none
*
********************************************************************/
void GOLMsg(GOL_MSG *pMsg){
OBJ_HEADER *pCurrentObj;
WORD translatedMsg;
if(pMsg->uiEvent == EVENT_INVALID)
return;
pCurrentObj = _pGolObjects;
while(pCurrentObj != NULL){
switch(pCurrentObj->type){
#ifdef USE_BUTTON
case OBJ_BUTTON:
translatedMsg = BtnTranslateMsg((BUTTON*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
BtnMsgDefault(translatedMsg,(BUTTON*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_WINDOW
case OBJ_WINDOW:
translatedMsg = WndTranslateMsg((WINDOW*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
GOLMsgCallback(translatedMsg,pCurrentObj,pMsg);
break;
#endif
#ifdef USE_CHECKBOX
case OBJ_CHECKBOX:
translatedMsg = CbTranslateMsg((CHECKBOX*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
CbMsgDefault(translatedMsg,(CHECKBOX*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_RADIOBUTTON
case OBJ_RADIOBUTTON:
translatedMsg = RbTranslateMsg((RADIOBUTTON*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
RbMsgDefault(translatedMsg,(RADIOBUTTON*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_EDITBOX
case OBJ_EDITBOX:
translatedMsg = EbTranslateMsg((EDITBOX*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
EbMsgDefault(translatedMsg,(EDITBOX*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_LISTBOX
case OBJ_LISTBOX:
translatedMsg = LbTranslateMsg((LISTBOX*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
LbMsgDefault(translatedMsg,(LISTBOX*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_SLIDER
case OBJ_SLIDER:
translatedMsg = SldTranslateMsg((SLIDER*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
SldMsgDefault(translatedMsg,(SLIDER*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_GROUPBOX
case OBJ_GROUPBOX:
translatedMsg = GbTranslateMsg((GROUPBOX*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
GOLMsgCallback(translatedMsg,pCurrentObj,pMsg);
break;
#endif
#ifdef USE_PROGRESSBAR
case OBJ_PROGRESSBAR:
break;
#endif
#ifdef USE_STATICTEXT
case OBJ_STATICTEXT:
translatedMsg = StTranslateMsg((STATICTEXT*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
GOLMsgCallback(translatedMsg,pCurrentObj,pMsg);
break;
#endif
#ifdef USE_PICTURE
case OBJ_PICTURE:
translatedMsg = PictTranslateMsg((PICTURE*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
GOLMsgCallback(translatedMsg,pCurrentObj,pMsg);
break;
#endif
#ifdef USE_ROUNDDIAL
case OBJ_ROUNDDIAL:
translatedMsg = RdiaTranslateMsg((ROUNDDIAL*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
RdiaMsgDefault(translatedMsg,(ROUNDDIAL*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_METER
case OBJ_METER:
translatedMsg = MtrTranslateMsg((METER*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
MtrMsgDefault(translatedMsg,(METER*)pCurrentObj, pMsg);
break;
#endif
#ifdef USE_CUSTOM
case OBJ_CUSTOM:
translatedMsg = CcTranslateMsg((CUSTOM*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
CcMsgDefault((CUSTOM*)pCurrentObj,pMsg);
break;
#endif
#ifdef USE_GRID
case OBJ_GRID:
translatedMsg = GridTranslateMsg((GRID*)pCurrentObj, pMsg);
if(translatedMsg == OBJ_MSG_INVALID)
break;
if(GOLMsgCallback(translatedMsg,pCurrentObj,pMsg))
GridMsgDefault( translatedMsg, (GRID*)pCurrentObj, pMsg );
break;
#endif
default:
break;
}
pCurrentObj = pCurrentObj->pNxtObj;
}
}