palette.c File Reference

#include "precomp.h"

Go to the source code of this file.

Functions
BOOL	IsTopmostRealApp (PWND pwnd)
HPALETTE	_SelectPalette (HDC hdc, HPALETTE hpal, BOOL fForceBackground)
int	xxxRealizePalette (HDC hdc)
VOID	xxxFlushPalette (PWND pwnd)
VOID	xxxBroadcastPaletteChanged (PWND pwnd, BOOL fForceDesktop)

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Function Documentation

HPALETTE _SelectPalette (  HDC  hdc, HPALETTE  hpal, BOOL  fForceBackground )

Definition at line 51 of file palette.c. References _GetDesktopWindow(), _IsChild(), BOOL, FALSE, GETPTI, GetTopLevelWindow(), gpqForeground, tagWND::head, IsTopmostRealApp(), NULL, PUSIF_PALETTEDISPLAY, SetWF, tagQ::spwndActive, TEST_PUSIF, TestWF, TIF_PALETTEAWARE, TRUE, WEFTOOLWINDOW, WFHASPALETTE, and WindowFromCacheDC(). Referenced by BMPtoDIB(), ConvertToDDB(), DIBtoBMP(), NtUserSelectPalette(), xxxDrawWallpaper(), and xxxInternalPaintDesktop(). { PWND pwndTop; BOOL fBackgroundPalette = TRUE; PWND pwnd = NULL; /* * If we are not forcing palette into background, find out where it does * actually belong. Don't ever select the default palette in as a * foreground palette because this confuses gdi. Many apps do a * (oldPal = SelectPalette) (myPal); Draw; SelectObject(oldPal). * and we don't want to allow this to go through. */ if (!fForceBackground && TEST_PUSIF(PUSIF_PALETTEDISPLAY) && (hpal != GreGetStockObject(DEFAULT_PALETTE))) { if (pwnd = WindowFromCacheDC(hdc)) { PWND pwndActive; /* * don't "select" palette unless on a palette device */ pwndTop = GetTopLevelWindow(pwnd); if (!TestWF(pwndTop, WFHASPALETTE)) { if (pwndTop != _GetDesktopWindow()) GETPTI(pwndTop)->TIF_flags |= TIF_PALETTEAWARE; SetWF(pwndTop, WFHASPALETTE); } /* * Hack-o-rama: * Windows get foreground use of the palette if * * They are the foreground's active window * * The current process is the shell and they are the * topmost valid non-toolwindow in the zorder. * * This makes our tray friendly on palettized displays. * Currently, if you run a palette app and click on the tray, * the palette app goes all weird. Broderbund apps go * completely black. This is because they get forced to be * background always, even though the shell isn't really * palettized. * * Note: this palette architecture sucks. Apps get forced to * be background palette users even if the foreground thread * couldn't care less about the palette. Should go by zorder * if so, but in a more clean way than this. * * We really only care about the tray && the background. * Cabinet dudes don't matter so much. */ pwndActive = (gpqForeground ? gpqForeground->spwndActive : NULL); #if 0 if (pwndActive && (pwndTop != pwnd->head.rpdesk->pDeskInfo->spwndShell) && ((pwndActive == pwnd) || _IsChild(pwndActive, pwnd) || IsTopmostRealApp(pwnd)) && !TestWF(pwnd, WEFTOOLWINDOW)) { fBackgroundPalette = FALSE; } #else if ((pwndTop != pwndTop->head.rpdesk->pDeskInfo->spwnd) && (pwndTop != pwndTop->head.rpdesk->pDeskInfo->spwndShell) && (pwndActive != NULL) && ((pwndActive == pwnd) || _IsChild(pwndActive, pwnd) || IsTopmostRealApp(pwnd)) && !TestWF(pwnd, WEFTOOLWINDOW)) { fBackgroundPalette = FALSE; } #endif } } return GreSelectPalette(hdc, hpal, fBackgroundPalette); }

BOOL IsTopmostRealApp (  PWND  pwnd  )

Definition at line 25 of file palette.c. References BOOL, FALSE, GETPTI, gpqForeground, tagWND::head, NextTopWindow(), NTW_IGNORETOOLWINDOW, NULL, PtiCurrent, and tagDESKTOPINFO::spwndShell. Referenced by _SelectPalette(). { PTHREADINFO ptiCurrent = PtiCurrent(); PDESKTOPINFO pdeskinfo = pwnd->head.rpdesk->pDeskInfo; if ((pdeskinfo->spwndShell == NULL) || (GETPTI(pdeskinfo->spwndShell)->pq != gpqForeground)) { return FALSE; } return (pwnd == NextTopWindow(ptiCurrent, NULL, NULL, NTW_IGNORETOOLWINDOW)); }

VOID xxxBroadcastPaletteChanged (  PWND  pwnd, BOOL  fForceDesktop )

Definition at line 243 of file palette.c. References CheckLock, HWq, L, PWND_BROADCAST, PWNDDESKTOP, ThreadLockAlways, ThreadUnlock, VOID(), xxxRealizeDesktop(), and xxxSendNotifyMessage(). Referenced by xxxFlushPalette(), and xxxRealizePalette(). { PWND pwndDesk; HWND hwnd = HWq(pwnd); CheckLock(pwnd); pwndDesk = PWNDDESKTOP(pwnd); if (fForceDesktop || pwnd != pwndDesk) { TL tlpwndDesk; ThreadLockAlways(pwndDesk, &tlpwndDesk); xxxRealizeDesktop(pwndDesk); ThreadUnlock(&tlpwndDesk); } xxxSendNotifyMessage(PWND_BROADCAST, WM_PALETTECHANGED, (WPARAM)hwnd, 0L); }

VOID xxxFlushPalette (  PWND  pwnd  )

Definition at line 220 of file palette.c. References CheckLock, gpDispInfo, tagDISPLAYINFO::hdcScreen, TRUE, VOID(), and xxxBroadcastPaletteChanged(). Referenced by xxxDestroyThreadInfo(), xxxDestroyWindow(), and xxxMinMaximize(). { CheckLock(pwnd); /* * Broadcast the palette changed messages. */ GreRealizeDefaultPalette(gpDispInfo->hdcScreen, TRUE); xxxBroadcastPaletteChanged(pwnd, TRUE); }

int xxxRealizePalette (  HDC  hdc  )

Definition at line 146 of file palette.c. References DTF_NEEDSPALETTECHANGED, tagDESKTOP::dwDTFlags, DWORD, FALSE, FreeAllSpbs(), grpWinStaList, tagWND::head, NULL, tagWINDOWSTATION::rpdeskList, tagDESKTOP::rpdeskNext, tagWINDOWSTATION::rpwinstaNext, ThreadLock, ThreadUnlock, WindowFromCacheDC(), and xxxBroadcastPaletteChanged(). Referenced by BMPtoDIB(), ConvertToDDB(), DIBtoBMP(), xxxDrawWallpaper(), and xxxInternalPaintDesktop(). { PWND pwnd; DWORD dwNumChanged; PWINDOWSTATION pwinsta; PDESKTOP pdesk; TL tlpwnd; dwNumChanged = GreRealizePalette(hdc); if (HIWORD(dwNumChanged) && IsDCCurrentPalette(hdc)) { pwnd = WindowFromCacheDC(hdc); /* * if there is no associated window, don't send the palette change * messages since this is a memory hdc. */ if (pwnd != NULL) { /* * Ok, send WM_PALETTECHANGED message to everyone. The wParam * contains a handle to the currently active window. Send * message to the desktop also, so things on the desktop bitmap * will paint ok. */ ThreadLock(pwnd, &tlpwnd); xxxBroadcastPaletteChanged(pwnd, FALSE); ThreadUnlock(&tlpwnd); /* * Mark all other desktops as needing to send out * WM_PALETTECHANGED messages. */ pwinsta = grpWinStaList; while (pwinsta != NULL) { pdesk = pwinsta->rpdeskList; while (pdesk != NULL) { if (pdesk != pwnd->head.rpdesk) { pdesk->dwDTFlags |= DTF_NEEDSPALETTECHANGED; } pdesk = pdesk->rpdeskNext; } pwinsta = pwinsta->rpwinstaNext; } GreRealizePalette(hdc); } } /* * Walk through the SPB list (the saved bitmaps under windows with the * CS_SAVEBITS style) discarding all bitmaps */ if (HIWORD(dwNumChanged)) { FreeAllSpbs(); } return LOWORD(dwNumChanged); }

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