106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* SPDX-License-Identifier: MIT OR X11
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*
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* Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
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*/
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#include <dix-config.h>
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#include "dix/dix_priv.h"
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#include "include/dix.h"
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#include "include/os.h"
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#include "include/scrnintstr.h"
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#include "include/windowstr.h"
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#define ARRAY_LENGTH(x) (sizeof(x) / sizeof((x)[0]))
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#define ARRAY_FOR_EACH(_ARRAY, _WALK) \
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for (struct { int idx; typeof(_ARRAY[0])*ptr; } _WALK = { 0, _ARRAY }; _WALK.idx < ARRAY_LENGTH(_ARRAY); _WALK.idx++, _WALK.ptr++)
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#define DECLARE_HOOK_LIST(NAME, FIELD) \
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void dixScreenHook##NAME(ScreenPtr pScreen, typeof(((ScreenRec){0}).FIELD[0].func) func, void *arg) \
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{ \
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for (int i=0; i<ARRAY_LENGTH(pScreen->FIELD); i++) { \
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if (!(pScreen->FIELD[i].func)) { \
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pScreen->FIELD[i].func = func; \
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pScreen->FIELD[i].arg = arg; \
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return; \
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} \
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} \
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FatalError("%s: out of slots", __FUNCTION__); \
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} \
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\
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void dixScreenUnhook##NAME(ScreenPtr pScreen, typeof(((ScreenRec){0}).FIELD[0].func) func, void *arg) \
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{ \
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for (int i=0; i<ARRAY_LENGTH(pScreen->FIELD); i++) { \
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if ((pScreen->FIELD[i].func == func) && (pScreen->FIELD[i].arg == arg)) { \
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pScreen->FIELD[i].func = NULL; \
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pScreen->FIELD[i].arg = NULL; \
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return; \
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} \
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} \
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}
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DECLARE_HOOK_LIST(WindowDestroy, _notify_window_destroy)
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DECLARE_HOOK_LIST(WindowPosition, _notify_window_position)
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DECLARE_HOOK_LIST(Close, _notify_screen_close)
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DECLARE_HOOK_LIST(PixmapDestroy, _notify_pixmap_destroy)
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int dixScreenRaiseWindowDestroy(WindowPtr pWin)
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{
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if (!pWin)
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return Success;
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ScreenPtr pScreen = pWin->drawable.pScreen;
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ARRAY_FOR_EACH(pScreen->_notify_window_destroy, walk) {
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if (walk.ptr->func)
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walk.ptr->func(pScreen, pWin, walk.ptr->arg);
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}
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return (pScreen->DestroyWindow ? (*pScreen->DestroyWindow) (pWin) : Success);
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}
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void dixScreenRaiseWindowPosition(WindowPtr pWin, uint32_t x, uint32_t y)
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{
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if (!pWin)
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return;
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ScreenPtr pScreen = pWin->drawable.pScreen;
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ARRAY_FOR_EACH(pScreen->_notify_window_position, walk) {
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if (walk.ptr->func)
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walk.ptr->func(pScreen, pWin, walk.ptr->arg, x, y);
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}
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if (pScreen->PositionWindow)
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(*pScreen->PositionWindow) (pWin, x, y);
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}
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void dixScreenRaiseClose(ScreenPtr pScreen)
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{
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if (!pScreen)
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return;
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ARRAY_FOR_EACH(pScreen->_notify_screen_close, walk) {
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if (walk.ptr->func)
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walk.ptr->func(pScreen, walk.ptr->arg);
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}
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if (pScreen->CloseScreen)
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(*pScreen->CloseScreen) (pScreen);
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}
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void dixScreenRaisePixmapDestroy(PixmapPtr pPixmap)
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{
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if (!pPixmap)
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return;
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ScreenPtr pScreen = pPixmap->drawable.pScreen;
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ARRAY_FOR_EACH(pScreen->_notify_pixmap_destroy, walk) {
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if (walk.ptr->func)
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walk.ptr->func(pScreen, pPixmap, walk.ptr->arg);
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}
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/* we must not call the original ScreenRec->DestroyPixmap() here */
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}
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