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mioverlay.c
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mioverlay.c
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#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include <X11/X.h>
#include "scrnintstr.h"
#include <X11/extensions/shapeproto.h>
#include "validate.h"
#include "windowstr.h"
#include "mi.h"
#include "gcstruct.h"
#include "regionstr.h"
#include "privates.h"
#include "mivalidate.h"
#include "mioverlay.h"
#include "migc.h"
#include "globals.h"
typedef struct {
RegionRec exposed;
RegionRec borderExposed;
RegionPtr borderVisible;
DDXPointRec oldAbsCorner;
} miOverlayValDataRec, *miOverlayValDataPtr;
typedef struct _TreeRec {
WindowPtr pWin;
struct _TreeRec *parent;
struct _TreeRec *firstChild;
struct _TreeRec *lastChild;
struct _TreeRec *prevSib;
struct _TreeRec *nextSib;
RegionRec borderClip;
RegionRec clipList;
unsigned visibility;
miOverlayValDataPtr valdata;
} miOverlayTreeRec, *miOverlayTreePtr;
typedef struct {
miOverlayTreePtr tree;
} miOverlayWindowRec, *miOverlayWindowPtr;
typedef struct {
CloseScreenProcPtr CloseScreen;
CreateWindowProcPtr CreateWindow;
DestroyWindowProcPtr DestroyWindow;
UnrealizeWindowProcPtr UnrealizeWindow;
RealizeWindowProcPtr RealizeWindow;
miOverlayTransFunc MakeTransparent;
miOverlayInOverlayFunc InOverlay;
Bool underlayMarked;
Bool copyUnderlay;
} miOverlayScreenRec, *miOverlayScreenPtr;
static DevPrivateKeyRec miOverlayWindowKeyRec;
#define miOverlayWindowKey (&miOverlayWindowKeyRec)
static DevPrivateKeyRec miOverlayScreenKeyRec;
#define miOverlayScreenKey (&miOverlayScreenKeyRec)
static void RebuildTree(WindowPtr);
static Bool HasUnderlayChildren(WindowPtr);
static void MarkUnderlayWindow(WindowPtr);
static Bool CollectUnderlayChildrenRegions(WindowPtr, RegionPtr);
static Bool miOverlayCloseScreen(ScreenPtr);
static Bool miOverlayCreateWindow(WindowPtr);
static Bool miOverlayDestroyWindow(WindowPtr);
static Bool miOverlayUnrealizeWindow(WindowPtr);
static Bool miOverlayRealizeWindow(WindowPtr);
static void miOverlayMarkWindow(WindowPtr);
static void miOverlayReparentWindow(WindowPtr, WindowPtr);
static void miOverlayRestackWindow(WindowPtr, WindowPtr);
static Bool miOverlayMarkOverlappedWindows(WindowPtr, WindowPtr, WindowPtr *);
static void miOverlayMarkUnrealizedWindow(WindowPtr, WindowPtr, Bool);
static int miOverlayValidateTree(WindowPtr, WindowPtr, VTKind);
static void miOverlayHandleExposures(WindowPtr);
static void miOverlayMoveWindow(WindowPtr, int, int, WindowPtr, VTKind);
static void miOverlayWindowExposures(WindowPtr, RegionPtr, RegionPtr);
static void miOverlayResizeWindow(WindowPtr, int, int, unsigned int,
unsigned int, WindowPtr);
static void miOverlayClearToBackground(WindowPtr, int, int, int, int, Bool);
static void miOverlaySetShape(WindowPtr, int);
static void miOverlayChangeBorderWidth(WindowPtr, unsigned int);
#define MIOVERLAY_GET_SCREEN_PRIVATE(pScreen) ((miOverlayScreenPtr) \
dixLookupPrivate(&(pScreen)->devPrivates, miOverlayScreenKey))
#define MIOVERLAY_GET_WINDOW_PRIVATE(pWin) ((miOverlayWindowPtr) \
dixLookupPrivate(&(pWin)->devPrivates, miOverlayWindowKey))
#define MIOVERLAY_GET_WINDOW_TREE(pWin) \
(MIOVERLAY_GET_WINDOW_PRIVATE(pWin)->tree)
#define IN_UNDERLAY(w) MIOVERLAY_GET_WINDOW_TREE(w)
#define IN_OVERLAY(w) !MIOVERLAY_GET_WINDOW_TREE(w)
#define MARK_OVERLAY(w) miMarkWindow(w)
#define MARK_UNDERLAY(w) MarkUnderlayWindow(w)
#define HasParentRelativeBorder(w) (!(w)->borderIsPixel && \
HasBorder(w) && \
(w)->backgroundState == ParentRelative)
Bool
miInitOverlay(ScreenPtr pScreen,
miOverlayInOverlayFunc inOverlayFunc,
miOverlayTransFunc transFunc)
{
miOverlayScreenPtr pScreenPriv;
if (!inOverlayFunc || !transFunc)
return FALSE;
if (!dixRegisterPrivateKey
(&miOverlayWindowKeyRec, PRIVATE_WINDOW, sizeof(miOverlayWindowRec)))
return FALSE;
if (!dixRegisterPrivateKey(&miOverlayScreenKeyRec, PRIVATE_SCREEN, 0))
return FALSE;
if (!(pScreenPriv = malloc(sizeof(miOverlayScreenRec))))
return FALSE;
dixSetPrivate(&pScreen->devPrivates, miOverlayScreenKey, pScreenPriv);
pScreenPriv->InOverlay = inOverlayFunc;
pScreenPriv->MakeTransparent = transFunc;
pScreenPriv->underlayMarked = FALSE;
pScreenPriv->CloseScreen = pScreen->CloseScreen;
pScreenPriv->CreateWindow = pScreen->CreateWindow;
pScreenPriv->DestroyWindow = pScreen->DestroyWindow;
pScreenPriv->UnrealizeWindow = pScreen->UnrealizeWindow;
pScreenPriv->RealizeWindow = pScreen->RealizeWindow;
pScreen->CloseScreen = miOverlayCloseScreen;
pScreen->CreateWindow = miOverlayCreateWindow;
pScreen->DestroyWindow = miOverlayDestroyWindow;
pScreen->UnrealizeWindow = miOverlayUnrealizeWindow;
pScreen->RealizeWindow = miOverlayRealizeWindow;
pScreen->ReparentWindow = miOverlayReparentWindow;
pScreen->RestackWindow = miOverlayRestackWindow;
pScreen->MarkOverlappedWindows = miOverlayMarkOverlappedWindows;
pScreen->MarkUnrealizedWindow = miOverlayMarkUnrealizedWindow;
pScreen->ValidateTree = miOverlayValidateTree;
pScreen->HandleExposures = miOverlayHandleExposures;
pScreen->MoveWindow = miOverlayMoveWindow;
pScreen->WindowExposures = miOverlayWindowExposures;
pScreen->ResizeWindow = miOverlayResizeWindow;
pScreen->MarkWindow = miOverlayMarkWindow;
pScreen->ClearToBackground = miOverlayClearToBackground;
pScreen->SetShape = miOverlaySetShape;
pScreen->ChangeBorderWidth = miOverlayChangeBorderWidth;
return TRUE;
}
static Bool
miOverlayCloseScreen(ScreenPtr pScreen)
{
miOverlayScreenPtr pScreenPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
pScreen->CloseScreen = pScreenPriv->CloseScreen;
pScreen->CreateWindow = pScreenPriv->CreateWindow;
pScreen->DestroyWindow = pScreenPriv->DestroyWindow;
pScreen->UnrealizeWindow = pScreenPriv->UnrealizeWindow;
pScreen->RealizeWindow = pScreenPriv->RealizeWindow;
free(pScreenPriv);
return (*pScreen->CloseScreen) (pScreen);
}
static Bool
miOverlayCreateWindow(WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayScreenPtr pScreenPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
miOverlayWindowPtr pWinPriv = MIOVERLAY_GET_WINDOW_PRIVATE(pWin);
miOverlayTreePtr pTree = NULL;
Bool result = TRUE;
pWinPriv->tree = NULL;
if (!pWin->parent || !((*pScreenPriv->InOverlay) (pWin))) {
if (!(pTree = (miOverlayTreePtr) calloc(1, sizeof(miOverlayTreeRec))))
return FALSE;
}
if (pScreenPriv->CreateWindow) {
pScreen->CreateWindow = pScreenPriv->CreateWindow;
result = (*pScreen->CreateWindow) (pWin);
pScreen->CreateWindow = miOverlayCreateWindow;
}
if (pTree) {
if (result) {
pTree->pWin = pWin;
pTree->visibility = VisibilityNotViewable;
pWinPriv->tree = pTree;
if (pWin->parent) {
RegionNull(&(pTree->borderClip));
RegionNull(&(pTree->clipList));
RebuildTree(pWin);
}
else {
BoxRec fullBox;
fullBox.x1 = 0;
fullBox.y1 = 0;
fullBox.x2 = pScreen->width;
fullBox.y2 = pScreen->height;
RegionInit(&(pTree->borderClip), &fullBox, 1);
RegionInit(&(pTree->clipList), &fullBox, 1);
}
}
else
free(pTree);
}
return TRUE;
}
static Bool
miOverlayDestroyWindow(WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayScreenPtr pScreenPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
miOverlayTreePtr pTree = MIOVERLAY_GET_WINDOW_TREE(pWin);
Bool result = TRUE;
if (pTree) {
if (pTree->prevSib)
pTree->prevSib->nextSib = pTree->nextSib;
else if (pTree->parent)
pTree->parent->firstChild = pTree->nextSib;
if (pTree->nextSib)
pTree->nextSib->prevSib = pTree->prevSib;
else if (pTree->parent)
pTree->parent->lastChild = pTree->prevSib;
RegionUninit(&(pTree->borderClip));
RegionUninit(&(pTree->clipList));
free(pTree);
}
if (pScreenPriv->DestroyWindow) {
pScreen->DestroyWindow = pScreenPriv->DestroyWindow;
result = (*pScreen->DestroyWindow) (pWin);
pScreen->DestroyWindow = miOverlayDestroyWindow;
}
return result;
}
static Bool
miOverlayUnrealizeWindow(WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayScreenPtr pScreenPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
miOverlayTreePtr pTree = MIOVERLAY_GET_WINDOW_TREE(pWin);
Bool result = TRUE;
if (pTree)
pTree->visibility = VisibilityNotViewable;
if (pScreenPriv->UnrealizeWindow) {
pScreen->UnrealizeWindow = pScreenPriv->UnrealizeWindow;
result = (*pScreen->UnrealizeWindow) (pWin);
pScreen->UnrealizeWindow = miOverlayUnrealizeWindow;
}
return result;
}
static Bool
miOverlayRealizeWindow(WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayScreenPtr pScreenPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
Bool result = TRUE;
if (pScreenPriv->RealizeWindow) {
pScreen->RealizeWindow = pScreenPriv->RealizeWindow;
result = (*pScreen->RealizeWindow) (pWin);
pScreen->RealizeWindow = miOverlayRealizeWindow;
}
/* we only need to catch the root window realization */
if (result && !pWin->parent && !((*pScreenPriv->InOverlay) (pWin))) {
BoxRec box;
box.x1 = box.y1 = 0;
box.x2 = pWin->drawable.width;
box.y2 = pWin->drawable.height;
(*pScreenPriv->MakeTransparent) (pScreen, 1, &box);
}
return result;
}
static void
miOverlayReparentWindow(WindowPtr pWin, WindowPtr pPriorParent)
{
if (IN_UNDERLAY(pWin) || HasUnderlayChildren(pWin)) {
/* This could probably be more optimal */
RebuildTree(pWin->drawable.pScreen->root->firstChild);
}
}
static void
miOverlayRestackWindow(WindowPtr pWin, WindowPtr oldNextSib)
{
if (IN_UNDERLAY(pWin) || HasUnderlayChildren(pWin)) {
/* This could probably be more optimal */
RebuildTree(pWin);
}
}
static Bool
miOverlayMarkOverlappedWindows(WindowPtr pWin,
WindowPtr pFirst, WindowPtr *pLayerWin)
{
WindowPtr pChild, pLast;
Bool overMarked, underMarked, doUnderlay, markAll;
miOverlayTreePtr pTree = NULL, tLast, tChild;
BoxPtr box;
overMarked = underMarked = markAll = FALSE;
if (pLayerWin)
*pLayerWin = pWin; /* hah! */
doUnderlay = (IN_UNDERLAY(pWin) || HasUnderlayChildren(pWin));
box = RegionExtents(&pWin->borderSize);
if ((pChild = pFirst)) {
pLast = pChild->parent->lastChild;
while (1) {
if (pChild == pWin)
markAll = TRUE;
if (doUnderlay && IN_UNDERLAY(pChild))
pTree = MIOVERLAY_GET_WINDOW_TREE(pChild);
if (pChild->viewable) {
if (RegionBroken(&pChild->winSize))
SetWinSize(pChild);
if (RegionBroken(&pChild->borderSize))
SetBorderSize(pChild);
if (markAll || RegionContainsRect(&pChild->borderSize, box)) {
MARK_OVERLAY(pChild);
overMarked = TRUE;
if (doUnderlay && IN_UNDERLAY(pChild)) {
MARK_UNDERLAY(pChild);
underMarked = TRUE;
}
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
}
}
while (!pChild->nextSib && (pChild != pLast)) {
pChild = pChild->parent;
if (doUnderlay && IN_UNDERLAY(pChild))
pTree = MIOVERLAY_GET_WINDOW_TREE(pChild);
}
if (pChild == pWin)
markAll = FALSE;
if (pChild == pLast)
break;
pChild = pChild->nextSib;
}
if (overMarked)
MARK_OVERLAY(pWin->parent);
}
if (doUnderlay && !pTree) {
if (!(pTree = MIOVERLAY_GET_WINDOW_TREE(pWin))) {
pChild = pWin->lastChild;
while (1) {
if ((pTree = MIOVERLAY_GET_WINDOW_TREE(pChild)))
break;
if (pChild->lastChild) {
pChild = pChild->lastChild;
continue;
}
while (!pChild->prevSib)
pChild = pChild->parent;
pChild = pChild->prevSib;
}
}
}
if (pTree && pTree->nextSib) {
tChild = pTree->parent->lastChild;
tLast = pTree->nextSib;
while (1) {
if (tChild->pWin->viewable) {
if (RegionBroken(&tChild->pWin->winSize))
SetWinSize(tChild->pWin);
if (RegionBroken(&tChild->pWin->borderSize))
SetBorderSize(tChild->pWin);
if (RegionContainsRect(&(tChild->pWin->borderSize), box)) {
MARK_UNDERLAY(tChild->pWin);
underMarked = TRUE;
}
}
if (tChild->lastChild) {
tChild = tChild->lastChild;
continue;
}
while (!tChild->prevSib && (tChild != tLast))
tChild = tChild->parent;
if (tChild == tLast)
break;
tChild = tChild->prevSib;
}
}
if (underMarked) {
ScreenPtr pScreen = pWin->drawable.pScreen;
MARK_UNDERLAY(pTree->parent->pWin);
MIOVERLAY_GET_SCREEN_PRIVATE(pScreen)->underlayMarked = TRUE;
}
return underMarked || overMarked;
}
static void
miOverlayComputeClips(WindowPtr pParent,
RegionPtr universe, VTKind kind, RegionPtr exposed)
{
ScreenPtr pScreen = pParent->drawable.pScreen;
int oldVis, newVis, dx, dy;
BoxRec borderSize;
RegionPtr borderVisible;
RegionRec childUniverse, childUnion;
miOverlayTreePtr tParent = MIOVERLAY_GET_WINDOW_TREE(pParent);
miOverlayTreePtr tChild;
Bool overlap;
borderSize.x1 = pParent->drawable.x - wBorderWidth(pParent);
borderSize.y1 = pParent->drawable.y - wBorderWidth(pParent);
dx = (int) pParent->drawable.x + (int) pParent->drawable.width +
wBorderWidth(pParent);
if (dx > 32767)
dx = 32767;
borderSize.x2 = dx;
dy = (int) pParent->drawable.y + (int) pParent->drawable.height +
wBorderWidth(pParent);
if (dy > 32767)
dy = 32767;
borderSize.y2 = dy;
oldVis = tParent->visibility;
switch (RegionContainsRect(universe, &borderSize)) {
case rgnIN:
newVis = VisibilityUnobscured;
break;
case rgnPART:
newVis = VisibilityPartiallyObscured;
{
RegionPtr pBounding;
if ((pBounding = wBoundingShape(pParent))) {
switch (miShapedWindowIn(universe, pBounding,
&borderSize,
pParent->drawable.x,
pParent->drawable.y)) {
case rgnIN:
newVis = VisibilityUnobscured;
break;
case rgnOUT:
newVis = VisibilityFullyObscured;
break;
}
}
}
break;
default:
newVis = VisibilityFullyObscured;
break;
}
tParent->visibility = newVis;
dx = pParent->drawable.x - tParent->valdata->oldAbsCorner.x;
dy = pParent->drawable.y - tParent->valdata->oldAbsCorner.y;
switch (kind) {
case VTMap:
case VTStack:
case VTUnmap:
break;
case VTMove:
if ((oldVis == newVis) &&
((oldVis == VisibilityFullyObscured) ||
(oldVis == VisibilityUnobscured))) {
tChild = tParent;
while (1) {
if (tChild->pWin->viewable) {
if (tChild->visibility != VisibilityFullyObscured) {
RegionTranslate(&tChild->borderClip, dx, dy);
RegionTranslate(&tChild->clipList, dx, dy);
tChild->pWin->drawable.serialNumber =
NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(*pScreen->ClipNotify) (tChild->pWin, dx, dy);
}
if (tChild->valdata) {
RegionNull(&tChild->valdata->borderExposed);
if (HasParentRelativeBorder(tChild->pWin)) {
RegionSubtract(&tChild->valdata->borderExposed,
&tChild->borderClip,
&tChild->pWin->winSize);
}
RegionNull(&tChild->valdata->exposed);
}
if (tChild->firstChild) {
tChild = tChild->firstChild;
continue;
}
}
while (!tChild->nextSib && (tChild != tParent))
tChild = tChild->parent;
if (tChild == tParent)
break;
tChild = tChild->nextSib;
}
return;
}
/* fall through */
default:
if (dx || dy) {
RegionTranslate(&tParent->borderClip, dx, dy);
RegionTranslate(&tParent->clipList, dx, dy);
}
break;
case VTBroken:
RegionEmpty(&tParent->borderClip);
RegionEmpty(&tParent->clipList);
break;
}
borderVisible = tParent->valdata->borderVisible;
RegionNull(&tParent->valdata->borderExposed);
RegionNull(&tParent->valdata->exposed);
if (HasBorder(pParent)) {
if (borderVisible) {
RegionSubtract(exposed, universe, borderVisible);
RegionDestroy(borderVisible);
}
else
RegionSubtract(exposed, universe, &tParent->borderClip);
if (HasParentRelativeBorder(pParent) && (dx || dy))
RegionSubtract(&tParent->valdata->borderExposed,
universe, &pParent->winSize);
else
RegionSubtract(&tParent->valdata->borderExposed,
exposed, &pParent->winSize);
RegionCopy(&tParent->borderClip, universe);
RegionIntersect(universe, universe, &pParent->winSize);
}
else
RegionCopy(&tParent->borderClip, universe);
if ((tChild = tParent->firstChild) && pParent->mapped) {
RegionNull(&childUniverse);
RegionNull(&childUnion);
for (; tChild; tChild = tChild->nextSib) {
if (tChild->pWin->viewable)
RegionAppend(&childUnion, &tChild->pWin->borderSize);
}
RegionValidate(&childUnion, &overlap);
for (tChild = tParent->firstChild; tChild; tChild = tChild->nextSib) {
if (tChild->pWin->viewable) {
if (tChild->valdata) {
RegionIntersect(&childUniverse, universe,
&tChild->pWin->borderSize);
miOverlayComputeClips(tChild->pWin, &childUniverse,
kind, exposed);
}
if (overlap)
RegionSubtract(universe, universe,
&tChild->pWin->borderSize);
}
}
if (!overlap)
RegionSubtract(universe, universe, &childUnion);
RegionUninit(&childUnion);
RegionUninit(&childUniverse);
}
if (oldVis == VisibilityFullyObscured || oldVis == VisibilityNotViewable) {
RegionCopy(&tParent->valdata->exposed, universe);
}
else if (newVis != VisibilityFullyObscured &&
newVis != VisibilityNotViewable) {
RegionSubtract(&tParent->valdata->exposed,
universe, &tParent->clipList);
}
/* HACK ALERT - copying contents of regions, instead of regions */
{
RegionRec tmp;
tmp = tParent->clipList;
tParent->clipList = *universe;
*universe = tmp;
}
pParent->drawable.serialNumber = NEXT_SERIAL_NUMBER;
if (pScreen->ClipNotify)
(*pScreen->ClipNotify) (pParent, dx, dy);
}
static void
miOverlayMarkWindow(WindowPtr pWin)
{
miOverlayTreePtr pTree = NULL;
WindowPtr pChild, pGrandChild;
miMarkWindow(pWin);
/* look for UnmapValdata among immediate children */
if (!(pChild = pWin->firstChild))
return;
for (; pChild; pChild = pChild->nextSib) {
if (pChild->valdata == UnmapValData) {
if (IN_UNDERLAY(pChild)) {
pTree = MIOVERLAY_GET_WINDOW_TREE(pChild);
pTree->valdata = (miOverlayValDataPtr) UnmapValData;
continue;
}
else {
if (!(pGrandChild = pChild->firstChild))
continue;
while (1) {
if (IN_UNDERLAY(pGrandChild)) {
pTree = MIOVERLAY_GET_WINDOW_TREE(pGrandChild);
pTree->valdata = (miOverlayValDataPtr) UnmapValData;
}
else if (pGrandChild->firstChild) {
pGrandChild = pGrandChild->firstChild;
continue;
}
while (!pGrandChild->nextSib && (pGrandChild != pChild))
pGrandChild = pGrandChild->parent;
if (pChild == pGrandChild)
break;
pGrandChild = pGrandChild->nextSib;
}
}
}
}
if (pTree) {
MARK_UNDERLAY(pTree->parent->pWin);
MIOVERLAY_GET_SCREEN_PRIVATE(pWin->drawable.pScreen)->underlayMarked =
TRUE;
}
}
static void
miOverlayMarkUnrealizedWindow(WindowPtr pChild,
WindowPtr pWin, Bool fromConfigure)
{
if ((pChild != pWin) || fromConfigure) {
miOverlayTreePtr pTree;
RegionEmpty(&pChild->clipList);
if (pChild->drawable.pScreen->ClipNotify)
(*pChild->drawable.pScreen->ClipNotify) (pChild, 0, 0);
RegionEmpty(&pChild->borderClip);
if ((pTree = MIOVERLAY_GET_WINDOW_TREE(pChild))) {
if (pTree->valdata != (miOverlayValDataPtr) UnmapValData) {
RegionEmpty(&pTree->clipList);
RegionEmpty(&pTree->borderClip);
}
}
}
}
static int
miOverlayValidateTree(WindowPtr pParent, WindowPtr pChild, /* first child effected */
VTKind kind)
{
ScreenPtr pScreen = pParent->drawable.pScreen;
miOverlayScreenPtr pPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
RegionRec totalClip, childClip, exposed;
miOverlayTreePtr tParent, tChild, tWin;
Bool overlap;
WindowPtr newParent;
if (!pPriv->underlayMarked)
goto SKIP_UNDERLAY;
if (!pChild)
pChild = pParent->firstChild;
RegionNull(&totalClip);
RegionNull(&childClip);
RegionNull(&exposed);
newParent = pParent;
while (IN_OVERLAY(newParent))
newParent = newParent->parent;
tParent = MIOVERLAY_GET_WINDOW_TREE(newParent);
if (IN_UNDERLAY(pChild))
tChild = MIOVERLAY_GET_WINDOW_TREE(pChild);
else
tChild = tParent->firstChild;
if (RegionBroken(&tParent->clipList) && !RegionBroken(&tParent->borderClip)) {
kind = VTBroken;
RegionCopy(&totalClip, &tParent->borderClip);
RegionIntersect(&totalClip, &totalClip, &tParent->pWin->winSize);
for (tWin = tParent->firstChild; tWin != tChild; tWin = tWin->nextSib) {
if (tWin->pWin->viewable)
RegionSubtract(&totalClip, &totalClip, &tWin->pWin->borderSize);
}
RegionEmpty(&tParent->clipList);
}
else {
for (tWin = tChild; tWin; tWin = tWin->nextSib) {
if (tWin->valdata)
RegionAppend(&totalClip, &tWin->borderClip);
}
RegionValidate(&totalClip, &overlap);
}
if (kind != VTStack)
RegionUnion(&totalClip, &totalClip, &tParent->clipList);
for (tWin = tChild; tWin; tWin = tWin->nextSib) {
if (tWin->valdata) {
if (tWin->pWin->viewable) {
RegionIntersect(&childClip, &totalClip,
&tWin->pWin->borderSize);
miOverlayComputeClips(tWin->pWin, &childClip, kind, &exposed);
RegionSubtract(&totalClip, &totalClip, &tWin->pWin->borderSize);
}
else { /* Means we are unmapping */
RegionEmpty(&tWin->clipList);
RegionEmpty(&tWin->borderClip);
tWin->valdata = NULL;
}
}
}
RegionUninit(&childClip);
if (!((*pPriv->InOverlay) (newParent))) {
RegionNull(&tParent->valdata->exposed);
RegionNull(&tParent->valdata->borderExposed);
}
switch (kind) {
case VTStack:
break;
default:
if (!((*pPriv->InOverlay) (newParent)))
RegionSubtract(&tParent->valdata->exposed, &totalClip,
&tParent->clipList);
/* fall through */
case VTMap:
RegionCopy(&tParent->clipList, &totalClip);
if (!((*pPriv->InOverlay) (newParent)))
newParent->drawable.serialNumber = NEXT_SERIAL_NUMBER;
break;
}
RegionUninit(&totalClip);
RegionUninit(&exposed);
SKIP_UNDERLAY:
miValidateTree(pParent, pChild, kind);
return 1;
}
static void
miOverlayHandleExposures(WindowPtr pWin)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayScreenPtr pPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
WindowPtr pChild;
ValidatePtr val;
void (*WindowExposures) (WindowPtr, RegionPtr, RegionPtr);
WindowExposures = pWin->drawable.pScreen->WindowExposures;
if (pPriv->underlayMarked) {
miOverlayTreePtr pTree;
miOverlayValDataPtr mival;
pChild = pWin;
while (IN_OVERLAY(pChild))
pChild = pChild->parent;
pTree = MIOVERLAY_GET_WINDOW_TREE(pChild);
while (1) {
if ((mival = pTree->valdata)) {
if (!((*pPriv->InOverlay) (pTree->pWin))) {
if (RegionNotEmpty(&mival->borderExposed)) {
miPaintWindow(pTree->pWin, &mival->borderExposed,
PW_BORDER);
}
RegionUninit(&mival->borderExposed);
(*WindowExposures) (pTree->pWin, &mival->exposed,
NullRegion);
RegionUninit(&mival->exposed);
}
free(mival);
pTree->valdata = NULL;
if (pTree->firstChild) {
pTree = pTree->firstChild;
continue;
}
}
while (!pTree->nextSib && (pTree->pWin != pChild))
pTree = pTree->parent;
if (pTree->pWin == pChild)
break;
pTree = pTree->nextSib;
}
pPriv->underlayMarked = FALSE;
}
pChild = pWin;
while (1) {
if ((val = pChild->valdata)) {
if (!((*pPriv->InOverlay) (pChild))) {
RegionUnion(&val->after.exposed, &val->after.exposed,
&val->after.borderExposed);
if (RegionNotEmpty(&val->after.exposed)) {
(*(MIOVERLAY_GET_SCREEN_PRIVATE(pScreen)->MakeTransparent))
(pScreen, RegionNumRects(&val->after.exposed),
RegionRects(&val->after.exposed));
}
}
else {
if (RegionNotEmpty(&val->after.borderExposed)) {
miPaintWindow(pChild, &val->after.borderExposed, PW_BORDER);
}
(*WindowExposures) (pChild, &val->after.exposed, NullRegion);
}
RegionUninit(&val->after.borderExposed);
RegionUninit(&val->after.exposed);
free(val);
pChild->valdata = NULL;
if (pChild->firstChild) {
pChild = pChild->firstChild;
continue;
}
}
while (!pChild->nextSib && (pChild != pWin))
pChild = pChild->parent;
if (pChild == pWin)
break;
pChild = pChild->nextSib;
}
}
static void
miOverlayMoveWindow(WindowPtr pWin,
int x, int y, WindowPtr pNextSib, VTKind kind)
{
ScreenPtr pScreen = pWin->drawable.pScreen;
miOverlayTreePtr pTree = MIOVERLAY_GET_WINDOW_TREE(pWin);
WindowPtr pParent, windowToValidate;
Bool WasViewable = (Bool) (pWin->viewable);
short bw;
RegionRec overReg, underReg;
DDXPointRec oldpt;
if (!(pParent = pWin->parent))
return;
bw = wBorderWidth(pWin);
oldpt.x = pWin->drawable.x;
oldpt.y = pWin->drawable.y;
if (WasViewable) {
RegionNull(&overReg);
RegionNull(&underReg);
if (pTree) {
RegionCopy(&overReg, &pWin->borderClip);
RegionCopy(&underReg, &pTree->borderClip);
}
else {
RegionCopy(&overReg, &pWin->borderClip);
CollectUnderlayChildrenRegions(pWin, &underReg);
}
(*pScreen->MarkOverlappedWindows) (pWin, pWin, NULL);
}
pWin->origin.x = x + (int) bw;
pWin->origin.y = y + (int) bw;
x = pWin->drawable.x = pParent->drawable.x + x + (int) bw;
y = pWin->drawable.y = pParent->drawable.y + y + (int) bw;
SetWinSize(pWin);
SetBorderSize(pWin);
(*pScreen->PositionWindow) (pWin, x, y);
windowToValidate = MoveWindowInStack(pWin, pNextSib);
ResizeChildrenWinSize(pWin, x - oldpt.x, y - oldpt.y, 0, 0);
if (WasViewable) {
miOverlayScreenPtr pPriv = MIOVERLAY_GET_SCREEN_PRIVATE(pScreen);
(*pScreen->MarkOverlappedWindows) (pWin, windowToValidate, NULL);
(*pScreen->ValidateTree) (pWin->parent, NullWindow, kind);
if (RegionNotEmpty(&underReg)) {
pPriv->copyUnderlay = TRUE;
(*pWin->drawable.pScreen->CopyWindow) (pWin, oldpt, &underReg);
}
RegionUninit(&underReg);
if (RegionNotEmpty(&overReg)) {
pPriv->copyUnderlay = FALSE;
(*pWin->drawable.pScreen->CopyWindow) (pWin, oldpt, &overReg);
}
RegionUninit(&overReg);
(*pScreen->HandleExposures) (pWin->parent);
if (pScreen->PostValidateTree)
(*pScreen->PostValidateTree) (pWin->parent, NullWindow, kind);
}
if (pWin->realized)
WindowsRestructured();
}
#ifndef RECTLIMIT
#define RECTLIMIT 25
#endif
static void
miOverlayWindowExposures(WindowPtr pWin,
RegionPtr prgn, RegionPtr other_exposed)
{
RegionPtr exposures = prgn;
if ((prgn && !RegionNil(prgn)) ||
(exposures && !RegionNil(exposures)) || other_exposed) {
RegionRec expRec;
int clientInterested;
clientInterested = (pWin->eventMask | wOtherEventMasks(pWin)) &
ExposureMask;
if (other_exposed) {
if (exposures) {
RegionUnion(other_exposed, exposures, other_exposed);
if (exposures != prgn)
RegionDestroy(exposures);
}