static void dc_Init_ScreenDC (void)
{
__mg_screen_dc.DataType = TYPE_HDC;
__mg_screen_dc.DCType = TYPE_SCRDC;
__mg_screen_dc.hwnd = 0;
__mg_screen_dc.gc = PHYSICALGC;
__mg_screen_dc.bkcolor = PIXEL_lightwhite;
__mg_screen_dc.bkmode = 0;
__mg_screen_dc.brushtype = BT_SOLID;
__mg_screen_dc.brushcolor = PIXEL_lightwhite;
__mg_screen_dc.BrushOrig.x = __mg_screen_dc.BrushOrig.y = 0;
__mg_screen_dc.pentype = PT_SOLID;
__mg_screen_dc.pencolor = PIXEL_black;
__mg_screen_dc.CurPenPos.x = __mg_screen_dc.CurPenPos.y = 0;
__mg_screen_dc.textcolor = PIXEL_black;
__mg_screen_dc.pLogFont = GetSystemFont (SYSLOGFONT_WCHAR_DEF);
__mg_screen_dc.tabstop = 8;
__mg_screen_dc.CurTextPos.x = __mg_screen_dc.CurTextPos.y = 0;
__mg_screen_dc.cExtra = __mg_screen_dc.alExtra = __mg_screen_dc.blExtra = 0;
__mg_screen_dc.ViewOrig.x = __mg_screen_dc.ViewOrig.y = 0;
__mg_screen_dc.ViewExtent.x = __mg_screen_dc.ViewExtent.y = 1;
__mg_screen_dc.WindowOrig.x = __mg_screen_dc.WindowOrig.y = 0;
__mg_screen_dc.WindowExtent.x = __mg_screen_dc.WindowExtent.y = 1;
__mg_screen_dc.bIsClient = FALSE;
// init local clip region
InitClipRgn (&__mg_screen_dc.lcrgn, &sg_FreeClipRectList);
// init effective clip region
InitClipRgn (&__mg_screen_dc.ecrgn, &sg_FreeClipRectList);
// init global clip region information
__mg_screen_dc.pGCRInfo = NULL;
__mg_screen_dc.oldage = 0;
__mg_screen_dc.DevRC.left = 0;
__mg_screen_dc.DevRC.top = 0;
__mg_screen_dc.DevRC.right = WIDTHOFPHYGC - 1;
__mg_screen_dc.DevRC.bottom = HEIGHTOFPHYGC - 1;
// Set local clip region and effetive clip region to the screen.
SetClipRgn (&__mg_screen_dc.lcrgn, &__mg_screen_dc.DevRC);
SetClipRgn (&__mg_screen_dc.ecrgn, &__mg_screen_dc.DevRC);
}
HDC GUIAPI CreatePrivateClientDC(HWND hwnd)
{
PDC pdc;
if (!(pdc = malloc (sizeof(DC)))) return HDC_INVALID;
InitClipRgn (&pdc->lcrgn, &sg_FreeClipRectList);
InitClipRgn (&pdc->ecrgn, &sg_FreeClipRectList);
pdc->inuse = TRUE;
pdc->DataType = TYPE_HDC;
pdc->DCType = TYPE_GENDC;
dc_InitDC(pdc, hwnd, TRUE);
return (HDC)(pdc);
}
// This function init clip region in all DC slots.
static void dc_InitClipRgnInfo(void)
{
int i;
for (i=0; i<DCSLOTNUMBER; i++) {
// Local clip region
InitClipRgn(&DCSlot[i].lcrgn, &sg_FreeClipRectList);
// Global clip region info
DCSlot[i].pGCRInfo = NULL;
DCSlot[i].oldage = 0;
// Effective clip region
InitClipRgn(&DCSlot[i].ecrgn, &sg_FreeClipRectList);
}
}
/*
* Function: HDC GUIAPI CreateCompatibleDC (HDC hdc)
* This function create a memory dc, which is compatible
* with specified hdc.
* Parameters:
* HDC hdc: the specified DC handle.
* Return:
* None.
*/
HDC GUIAPI CreateCompatibleDC(HDC hdc)
{
GAL_GC gc;
PDC pdc;
PDC pMemDC = NULL;
pdc = dc_HDC2PDC(hdc);
if (!(pMemDC = malloc (sizeof(DC)))) return HDC_INVALID;
pthread_mutex_lock (&__mg_gdilock);
if (GAL_AllocateGC (pdc->gc, RECTW (pdc->DevRC), RECTH (pdc->DevRC),
GAL_BytesPerPixel (pdc->gc), &gc) != 0) {
pthread_mutex_unlock (&__mg_gdilock);
return HDC_INVALID;
}
pthread_mutex_unlock (&__mg_gdilock);
memcpy (pMemDC, pdc, sizeof(DC));
pMemDC->DataType = TYPE_HDC;
pMemDC->DCType = TYPE_MEMDC;
pMemDC->inuse = TRUE;
pMemDC->gc = gc;
// clip region info
InitClipRgn (&pMemDC->lcrgn, &sg_FreeClipRectList);
InitClipRgn (&pMemDC->ecrgn, &sg_FreeClipRectList);
pMemDC->pGCRInfo = NULL;
pMemDC->oldage = 0;
pMemDC->DevRC.left = 0;
pMemDC->DevRC.top = 0;
pMemDC->DevRC.right = RECTW(pdc->DevRC);
pMemDC->DevRC.bottom = RECTH(pdc->DevRC);
SetClipRgn (&pMemDC->ecrgn, &pMemDC->DevRC);
return (HDC)pMemDC;
}
static BOOL InitWndManagementInfo (void)
{
if (!InitMainWinMetrics())
return FALSE;
__mg_capture_wnd = 0;
__mg_active_mainwnd = NULL;
__mg_ptmi = NULL;
__mg_ime_wnd = 0;
sg_hCaretWnd = 0;
g_rcScr.left = g_rcScr.top = 0;
g_rcScr.right = GetGDCapability (HDC_SCREEN, GDCAP_MAXX) + 1;
g_rcScr.bottom = GetGDCapability (HDC_SCREEN, GDCAP_MAXY) + 1;
InitClipRgn (&sg_ScrGCRInfo.crgn, &sg_FreeClipRectList);
SetClipRgn (&sg_ScrGCRInfo.crgn, &g_rcScr);
pthread_mutex_init (&sg_ScrGCRInfo.lock, NULL);
sg_ScrGCRInfo.age = 0;
return TRUE;
}
