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normal.c
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/* ------------- normal.c ------------ */
#include "dflat.h"
#ifdef INCLUDE_MULTI_WINDOWS
static void near PaintOverLappers(WINDOW wnd);
static void near PaintUnderLappers(WINDOW wnd);
#endif
static BOOL InsideWindow(WINDOW, int, int);
static void TerminateMoveSize(void);
static void SaveBorder(RECT);
static void RestoreBorder(RECT);
static void GetVideoBuffer(WINDOW);
static void PutVideoBuffer(WINDOW);
#ifdef INCLUDE_MINIMIZE
static RECT PositionIcon(WINDOW);
#endif
static void near dragborder(WINDOW, int, int);
static void near sizeborder(WINDOW, int, int);
static int px = -1, py = -1;
static int diff;
static struct window dwnd = {DUMMY, NULL, NormalProc,
{-1,-1,-1,-1}};
static short *Bsave;
static int Bht, Bwd;
BOOL WindowMoving;
BOOL WindowSizing;
/* -------- array of class definitions -------- */
CLASSDEFS classdefs[] = {
#undef ClassDef
#define ClassDef(c,b,p,a) {b,p,a},
#include "classes.h"
};
WINDOW HiddenWindow;
/* --------- CREATE_WINDOW Message ---------- */
static void CreateWindowMsg(WINDOW wnd)
{
AppendWindow(wnd);
if (!SendMessage(NULL, MOUSE_INSTALLED, 0, 0))
ClearAttribute(wnd, VSCROLLBAR | HSCROLLBAR);
if (TestAttribute(wnd, SAVESELF) && isVisible(wnd))
GetVideoBuffer(wnd);
}
/* --------- SHOW_WINDOW Message ---------- */
static void ShowWindowMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
if (GetParent(wnd) == NULL || isVisible(GetParent(wnd))) {
WINDOW cwnd;
if (TestAttribute(wnd, SAVESELF) &&
wnd->videosave == NULL)
GetVideoBuffer(wnd);
SetVisible(wnd);
SendMessage(wnd, PAINT, 0, TRUE);
SendMessage(wnd, BORDER, 0, 0);
/* --- show the children of this window --- */
cwnd = FirstWindow(wnd);
while (cwnd != NULL) {
if (cwnd->condition != ISCLOSING)
SendMessage(cwnd, SHOW_WINDOW, p1, p2);
cwnd = NextWindow(cwnd);
}
}
}
/* --------- HIDE_WINDOW Message ---------- */
static void HideWindowMsg(WINDOW wnd)
{
if (isVisible(wnd)) {
ClearVisible(wnd);
/* --- paint what this window covered --- */
if (TestAttribute(wnd, SAVESELF))
PutVideoBuffer(wnd);
#ifdef INCLUDE_MULTI_WINDOWS
else
PaintOverLappers(wnd);
#endif
wnd->wasCleared = FALSE;
}
}
/* --------- KEYBOARD Message ---------- */
static BOOL KeyboardMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
if (WindowMoving || WindowSizing) {
/* -- move or size a window with keyboard -- */
int x, y;
x=WindowMoving?GetLeft(&dwnd):GetRight(&dwnd);
y=WindowMoving?GetTop(&dwnd):GetBottom(&dwnd);
switch ((int)p1) {
case ESC:
TerminateMoveSize();
return TRUE;
case UP:
if (y)
--y;
break;
case DN:
if (y < SCREENHEIGHT-1)
y++;
break;
case FWD:
if (x < SCREENWIDTH-1)
x++;
break;
case BS:
if (x)
--x;
break;
case '\r':
SendMessage(wnd,BUTTON_RELEASED,x,y);
default:
return TRUE;
}
/* -- use the mouse functions to move/size - */
SendMessage(wnd, MOUSE_CURSOR, x, y);
SendMessage(wnd, MOUSE_MOVED, x, y);
return TRUE;
}
switch ((int)p1) {
case F1:
SendMessage(wnd, COMMAND, ID_HELP, 0);
return TRUE;
case ' ':
if ((int)p2 & ALTKEY)
if (TestAttribute(wnd, HASTITLEBAR))
if (TestAttribute(wnd, CONTROLBOX))
BuildSystemMenu(wnd);
return TRUE;
case CTRL_F4:
if (TestAttribute(wnd, CONTROLBOX)) {
SendMessage(wnd, CLOSE_WINDOW, 0, 0);
SkipApplicationControls();
return TRUE;
}
break;
default:
break;
}
return FALSE;
}
/* --------- COMMAND Message ---------- */
static void CommandMsg(WINDOW wnd, PARAM p1)
{
switch ((int)p1) {
case ID_HELP:
DisplayHelp(wnd,ClassNames[GetClass(wnd)]);
break;
#ifdef INCLUDE_RESTORE
case ID_SYSRESTORE:
SendMessage(wnd, RESTORE, 0, 0);
break;
#endif
case ID_SYSMOVE:
SendMessage(wnd, CAPTURE_MOUSE, TRUE,
(PARAM) &dwnd);
SendMessage(wnd, CAPTURE_KEYBOARD, TRUE,
(PARAM) &dwnd);
SendMessage(wnd, MOUSE_CURSOR,
GetLeft(wnd), GetTop(wnd));
WindowMoving = TRUE;
dragborder(wnd, GetLeft(wnd), GetTop(wnd));
break;
case ID_SYSSIZE:
SendMessage(wnd, CAPTURE_MOUSE, TRUE,
(PARAM) &dwnd);
SendMessage(wnd, CAPTURE_KEYBOARD, TRUE,
(PARAM) &dwnd);
SendMessage(wnd, MOUSE_CURSOR,
GetRight(wnd), GetBottom(wnd));
WindowSizing = TRUE;
dragborder(wnd, GetLeft(wnd), GetTop(wnd));
break;
#ifdef INCLUDE_MINIMIZE
case ID_SYSMINIMIZE:
SendMessage(wnd, MINIMIZE, 0, 0);
break;
#endif
#ifdef INCLUDE_MAXIMIZE
case ID_SYSMAXIMIZE:
SendMessage(wnd, MAXIMIZE, 0, 0);
break;
#endif
case ID_SYSCLOSE:
SendMessage(wnd, CLOSE_WINDOW, 0, 0);
SkipApplicationControls();
break;
default:
break;
}
}
/* --------- SETFOCUS Message ---------- */
static void SetFocusMsg(WINDOW wnd, PARAM p1)
{
RECT rc = {0,0,0,0};
if (p1 && wnd != NULL && inFocus != wnd) {
WINDOW This, thispar;
WINDOW that = NULL, thatpar = NULL;
WINDOW cwnd = wnd, fwnd = GetParent(wnd);
/* ---- post focus in ancestors ---- */
while (fwnd != NULL) {
fwnd->childfocus = cwnd;
cwnd = fwnd;
fwnd = GetParent(fwnd);
}
/* ---- de-post focus in self and children ---- */
fwnd = wnd;
while (fwnd != NULL) {
cwnd = fwnd->childfocus;
fwnd->childfocus = NULL;
fwnd = cwnd;
}
This = wnd;
that = thatpar = inFocus;
/* ---- find common ancestor of prev focus and this window --- */
while (thatpar != NULL) {
thispar = wnd;
while (thispar != NULL) {
if (This == CaptureMouse || This == CaptureKeyboard) {
/* ---- don't repaint if this window has capture ---- */
that = thatpar = NULL;
break;
}
if (thispar == thatpar) {
/* ---- don't repaint if SAVESELF window had focus ---- */
if (This != that && TestAttribute(that, SAVESELF))
that = thatpar = NULL;
break;
}
This = thispar;
thispar = GetParent(thispar);
}
if (thispar != NULL)
break;
that = thatpar;
thatpar = GetParent(thatpar);
}
if (inFocus != NULL)
SendMessage(inFocus, SETFOCUS, FALSE, 0);
inFocus = wnd;
if (that != NULL && isVisible(wnd)) {
rc = subRectangle(WindowRect(that), WindowRect(This));
if (!ValidRect(rc)) {
if (ApplicationWindow != NULL) {
WINDOW fwnd = FirstWindow(ApplicationWindow);
while (fwnd != NULL) {
if (!isAncestor(wnd, fwnd)) {
rc = subRectangle(WindowRect(wnd),WindowRect(fwnd));
if (ValidRect(rc))
break;
}
fwnd = NextWindow(fwnd);
}
}
}
}
if (that != NULL && !ValidRect(rc) && isVisible(wnd))
This = NULL;
ReFocus(wnd);
if (This != NULL &&
(!isVisible(This) || !TestAttribute(This, SAVESELF))) {
wnd->wasCleared = FALSE;
SendMessage(This, SHOW_WINDOW, 0, 0);
}
else if (!isVisible(wnd))
SendMessage(wnd, SHOW_WINDOW, 0, 0);
else
SendMessage(wnd, BORDER, 0, 0);
}
else if (!p1 && inFocus == wnd) {
/* -------- clearing focus --------- */
inFocus = NULL;
SendMessage(wnd, BORDER, 0, 0);
}
}
/* --------- DOUBLE_CLICK Message ---------- */
static void DoubleClickMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
int mx = (int) p1 - GetLeft(wnd);
int my = (int) p2 - GetTop(wnd);
if (!WindowSizing && !WindowMoving) {
if (HitControlBox(wnd, mx, my)) {
PostMessage(wnd, CLOSE_WINDOW, 0, 0);
SkipApplicationControls();
}
}
}
/* --------- LEFT_BUTTON Message ---------- */
static void LeftButtonMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
int mx = (int) p1 - GetLeft(wnd);
int my = (int) p2 - GetTop(wnd);
if (WindowSizing || WindowMoving)
return;
if (HitControlBox(wnd, mx, my)) {
BuildSystemMenu(wnd);
return;
}
if (my == 0 && mx > -1 && mx < WindowWidth(wnd)) {
/* ---------- hit the top border -------- */
if (TestAttribute(wnd, MINMAXBOX) &&
TestAttribute(wnd, HASTITLEBAR)) {
if (mx == WindowWidth(wnd)-2) {
if (wnd->condition != ISRESTORED)
/* --- hit the restore box --- */
SendMessage(wnd, RESTORE, 0, 0);
#ifdef INCLUDE_MAXIMIZE
else
/* --- hit the maximize box --- */
SendMessage(wnd, MAXIMIZE, 0, 0);
#endif
return;
}
#ifdef INCLUDE_MINIMIZE
if (mx == WindowWidth(wnd)-3) {
/* --- hit the minimize box --- */
if (wnd->condition != ISMINIMIZED)
SendMessage(wnd, MINIMIZE, 0, 0);
return;
}
#endif
}
#ifdef INCLUDE_MAXIMIZE
if (wnd->condition == ISMAXIMIZED)
return;
#endif
if (TestAttribute(wnd, MOVEABLE)) {
WindowMoving = TRUE;
px = mx;
py = my;
diff = (int) mx;
SendMessage(wnd, CAPTURE_MOUSE, TRUE,
(PARAM) &dwnd);
dragborder(wnd, GetLeft(wnd), GetTop(wnd));
}
return;
}
if (mx == WindowWidth(wnd)-1 &&
my == WindowHeight(wnd)-1) {
/* ------- hit the resize corner ------- */
#ifdef INCLUDE_MINIMIZE
if (wnd->condition == ISMINIMIZED)
return;
#endif
if (!TestAttribute(wnd, SIZEABLE))
return;
#ifdef INCLUDE_MAXIMIZE
if (wnd->condition == ISMAXIMIZED) {
if (GetParent(wnd) == NULL)
return;
if (TestAttribute(GetParent(wnd),HASBORDER))
return;
/* ----- resizing a maximized window over a
borderless parent ----- */
wnd = GetParent(wnd);
if (!TestAttribute(wnd, SIZEABLE))
return;
}
#endif
WindowSizing = TRUE;
SendMessage(wnd, CAPTURE_MOUSE,
TRUE, (PARAM) &dwnd);
dragborder(wnd, GetLeft(wnd), GetTop(wnd));
}
}
/* --------- MOUSE_MOVED Message ---------- */
static BOOL MouseMovedMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
if (WindowMoving) {
int leftmost = 0, topmost = 0,
bottommost = SCREENHEIGHT-2,
rightmost = SCREENWIDTH-2;
int x = (int) p1 - diff;
int y = (int) p2;
if (GetParent(wnd) != NULL &&
!TestAttribute(wnd, NOCLIP)) {
WINDOW wnd1 = GetParent(wnd);
topmost = GetClientTop(wnd1);
leftmost = GetClientLeft(wnd1);
bottommost = GetClientBottom(wnd1);
rightmost = GetClientRight(wnd1);
}
if (x < leftmost || x > rightmost ||
y < topmost || y > bottommost) {
x = max(x, leftmost);
x = min(x, rightmost);
y = max(y, topmost);
y = min(y, bottommost);
SendMessage(NULL,MOUSE_CURSOR,x+diff,y);
}
if (x != px || y != py) {
px = x;
py = y;
dragborder(wnd, x, y);
}
return TRUE;
}
if (WindowSizing) {
sizeborder(wnd, (int) p1, (int) p2);
return TRUE;
}
return FALSE;
}
#ifdef INCLUDE_MAXIMIZE
/* --------- MAXIMIZE Message ---------- */
static void MaximizeMsg(WINDOW wnd)
{
RECT rc = {0, 0, 0, 0};
RECT holdrc;
holdrc = wnd->RestoredRC;
rc.rt = SCREENWIDTH-1;
rc.bt = SCREENHEIGHT-1;
if (GetParent(wnd))
rc = ClientRect(GetParent(wnd));
wnd->oldcondition = wnd->condition;
wnd->condition = ISMAXIMIZED;
wnd->wasCleared = FALSE;
SendMessage(wnd, HIDE_WINDOW, 0, 0);
SendMessage(wnd, MOVE,
RectLeft(rc), RectTop(rc));
SendMessage(wnd, SIZE,
RectRight(rc), RectBottom(rc));
if (wnd->restored_attrib == 0)
wnd->restored_attrib = wnd->attrib;
ClearAttribute(wnd, SHADOW);
SendMessage(wnd, SHOW_WINDOW, 0, 0);
wnd->RestoredRC = holdrc;
}
#endif
#ifdef INCLUDE_MINIMIZE
/* --------- MINIMIZE Message ---------- */
static void MinimizeMsg(WINDOW wnd)
{
RECT rc;
RECT holdrc;
holdrc = wnd->RestoredRC;
rc = PositionIcon(wnd);
wnd->oldcondition = wnd->condition;
wnd->condition = ISMINIMIZED;
wnd->wasCleared = FALSE;
SendMessage(wnd, HIDE_WINDOW, 0, 0);
SendMessage(wnd, MOVE,
RectLeft(rc), RectTop(rc));
SendMessage(wnd, SIZE,
RectRight(rc), RectBottom(rc));
if (wnd == inFocus)
SetNextFocus();
if (wnd->restored_attrib == 0)
wnd->restored_attrib = wnd->attrib;
ClearAttribute(wnd,
SHADOW | SIZEABLE | HASMENUBAR |
VSCROLLBAR | HSCROLLBAR);
SendMessage(wnd, SHOW_WINDOW, 0, 0);
wnd->RestoredRC = holdrc;
}
#endif
#ifdef INCLUDE_RESTORE
/* --------- RESTORE Message ---------- */
static void RestoreMsg(WINDOW wnd)
{
RECT holdrc;
holdrc = wnd->RestoredRC;
wnd->oldcondition = wnd->condition;
wnd->condition = ISRESTORED;
wnd->wasCleared = FALSE;
SendMessage(wnd, HIDE_WINDOW, 0, 0);
wnd->attrib = wnd->restored_attrib;
wnd->restored_attrib = 0;
SendMessage(wnd, MOVE, wnd->RestoredRC.lf,
wnd->RestoredRC.tp);
wnd->RestoredRC = holdrc;
SendMessage(wnd, SIZE, wnd->RestoredRC.rt,
wnd->RestoredRC.bt);
if (wnd != inFocus)
SendMessage(wnd, SETFOCUS, TRUE, 0);
else
SendMessage(wnd, SHOW_WINDOW, 0, 0);
}
#endif
/* --------- MOVE Message ---------- */
static void MoveMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
WINDOW cwnd;
BOOL wasVisible = isVisible(wnd);
int xdif = (int) p1 - wnd->rc.lf;
int ydif = (int) p2 - wnd->rc.tp;
if (xdif == 0 && ydif == 0)
return;
wnd->wasCleared = FALSE;
if (wasVisible)
SendMessage(wnd, HIDE_WINDOW, 0, 0);
wnd->rc.lf = (int) p1;
wnd->rc.tp = (int) p2;
wnd->rc.rt = GetLeft(wnd)+WindowWidth(wnd)-1;
wnd->rc.bt = GetTop(wnd)+WindowHeight(wnd)-1;
if (wnd->condition == ISRESTORED)
wnd->RestoredRC = wnd->rc;
cwnd = FirstWindow(wnd);
while (cwnd != NULL) {
SendMessage(cwnd, MOVE, cwnd->rc.lf+xdif, cwnd->rc.tp+ydif);
cwnd = NextWindow(cwnd);
}
if (wasVisible)
SendMessage(wnd, SHOW_WINDOW, 0, 0);
}
/* --------- SIZE Message ---------- */
static void SizeMsg(WINDOW wnd, PARAM p1, PARAM p2)
{
BOOL wasVisible = isVisible(wnd);
WINDOW cwnd;
RECT rc;
int xdif = (int) p1 - wnd->rc.rt;
int ydif = (int) p2 - wnd->rc.bt;
if (xdif == 0 && ydif == 0)
return;
wnd->wasCleared = FALSE;
if (wasVisible)
SendMessage(wnd, HIDE_WINDOW, 0, 0);
wnd->rc.rt = (int) p1;
wnd->rc.bt = (int) p2;
wnd->ht = GetBottom(wnd)-GetTop(wnd)+1;
wnd->wd = GetRight(wnd)-GetLeft(wnd)+1;
if (wnd->condition == ISRESTORED)
wnd->RestoredRC = WindowRect(wnd);
#ifdef INCLUDE_MAXIMIZE
rc = ClientRect(wnd);
cwnd = FirstWindow(wnd);
while (cwnd != NULL) {
if (cwnd->condition == ISMAXIMIZED)
SendMessage(cwnd, SIZE, RectRight(rc), RectBottom(rc));
cwnd = NextWindow(cwnd);
}
#endif
if (wasVisible)
SendMessage(wnd, SHOW_WINDOW, 0, 0);
}
/* --------- CLOSE_WINDOW Message ---------- */
static void CloseWindowMsg(WINDOW wnd)
{
WINDOW cwnd;
wnd->condition = ISCLOSING;
/* ----------- hide this window ------------ */
SendMessage(wnd, HIDE_WINDOW, 0, 0);
/* --- close the children of this window --- */
cwnd = LastWindow(wnd);
while (cwnd != NULL) {
if (inFocus == cwnd)
inFocus = wnd;
SendMessage(cwnd,CLOSE_WINDOW,0,0);
cwnd = LastWindow(wnd);
}
/* ----- release captured resources ------ */
if (wnd->PrevClock != NULL)
SendMessage(wnd, RELEASE_CLOCK, 0, 0);
if (wnd->PrevMouse != NULL)
SendMessage(wnd, RELEASE_MOUSE, 0, 0);
if (wnd->PrevKeyboard != NULL)
SendMessage(wnd, RELEASE_KEYBOARD, 0, 0);
/* --- change focus if this window had it -- */
if (wnd == inFocus)
SetPrevFocus();
/* -- free memory allocated to this window - */
if (wnd->title != NULL)
free(wnd->title);
if (wnd->videosave != NULL)
free(wnd->videosave);
/* -- remove window from parent's list of children -- */
RemoveWindow(wnd);
if (wnd == inFocus)
inFocus = NULL;
free(wnd);
}
/* ---- Window-processing module for NORMAL window class ---- */
int NormalProc(WINDOW wnd, MESSAGE msg, PARAM p1, PARAM p2)
{
switch (msg) {
case CREATE_WINDOW:
CreateWindowMsg(wnd);
break;
case SHOW_WINDOW:
ShowWindowMsg(wnd, p1, p2);
break;
case HIDE_WINDOW:
HideWindowMsg(wnd);
break;
case DISPLAY_HELP:
return DisplayHelp(wnd, (char *)p1);
case INSIDE_WINDOW:
return InsideWindow(wnd, (int) p1, (int) p2);
case KEYBOARD:
if (KeyboardMsg(wnd, p1, p2))
return TRUE;
/* ------- fall through ------- */
case ADDSTATUS:
case SHIFT_CHANGED:
if (GetParent(wnd) != NULL)
PostMessage(GetParent(wnd), msg, p1, p2);
break;
case PAINT:
if (isVisible(wnd)) {
#ifdef INCLUDE_MULTI_WINDOWS
if (wnd->wasCleared)
PaintUnderLappers(wnd);
else
#endif
{
wnd->wasCleared = TRUE;
ClearWindow(wnd, (RECT *)p1, ' ');
}
}
break;
case BORDER:
if (isVisible(wnd)) {
if (TestAttribute(wnd, HASBORDER))
RepaintBorder(wnd, (RECT *)p1);
else if (TestAttribute(wnd, HASTITLEBAR))
DisplayTitle(wnd, (RECT *)p1);
}
break;
case COMMAND:
CommandMsg(wnd, p1);
break;
case SETFOCUS:
SetFocusMsg(wnd, p1);
break;
case DOUBLE_CLICK:
DoubleClickMsg(wnd, p1, p2);
break;
case LEFT_BUTTON:
LeftButtonMsg(wnd, p1, p2);
break;
case MOUSE_MOVED:
if (MouseMovedMsg(wnd, p1, p2))
return TRUE;
break;
case BUTTON_RELEASED:
if (WindowMoving || WindowSizing) {
if (WindowMoving)
PostMessage(wnd,MOVE,dwnd.rc.lf,dwnd.rc.tp);
else
PostMessage(wnd,SIZE,dwnd.rc.rt,dwnd.rc.bt);
TerminateMoveSize();
}
break;
#ifdef INCLUDE_MAXIMIZE
case MAXIMIZE:
if (wnd->condition != ISMAXIMIZED)
MaximizeMsg(wnd);
break;
#endif
#ifdef INCLUDE_MINIMIZE
case MINIMIZE:
if (wnd->condition != ISMINIMIZED)
MinimizeMsg(wnd);
break;
#endif
#ifdef INCLUDE_RESTORE
case RESTORE:
if (wnd->condition != ISRESTORED) {
#ifdef INCLUDE_MAXIMIZE
if (wnd->oldcondition == ISMAXIMIZED)
SendMessage(wnd, MAXIMIZE, 0, 0);
else
#endif
RestoreMsg(wnd);
}
break;
#endif
case MOVE:
MoveMsg(wnd, p1, p2);
break;
case SIZE: {
SizeMsg(wnd, p1, p2);
break;
}
case CLOSE_WINDOW:
CloseWindowMsg(wnd);
break;
default:
break;
}
return TRUE;
}
#ifdef INCLUDE_MINIMIZE
/* ---- compute lower right icon space in a rectangle ---- */
static RECT LowerRight(RECT prc)
{
RECT rc;
RectLeft(rc) = RectRight(prc) - ICONWIDTH;
RectTop(rc) = RectBottom(prc) - ICONHEIGHT;
RectRight(rc) = RectLeft(rc)+ICONWIDTH-1;
RectBottom(rc) = RectTop(rc)+ICONHEIGHT-1;
return rc;
}
/* ----- compute a position for a minimized window icon ---- */
static RECT PositionIcon(WINDOW wnd)
{
WINDOW pwnd = GetParent(wnd);
RECT rc;
RectLeft(rc) = SCREENWIDTH-ICONWIDTH;
RectTop(rc) = SCREENHEIGHT-ICONHEIGHT;
RectRight(rc) = SCREENWIDTH-1;
RectBottom(rc) = SCREENHEIGHT-1;
if (pwnd != NULL) {
RECT prc = WindowRect(pwnd);
WINDOW cwnd = FirstWindow(pwnd);
rc = LowerRight(prc);
/* - search for icon available location - */
while (cwnd != NULL) {
if (cwnd->condition == ISMINIMIZED) {
RECT rc1;
rc1 = WindowRect(cwnd);
if (RectLeft(rc1) == RectLeft(rc) &&
RectTop(rc1) == RectTop(rc)) {
RectLeft(rc) -= ICONWIDTH;
RectRight(rc) -= ICONWIDTH;
if (RectLeft(rc) < RectLeft(prc)+1) {
RectLeft(rc) =
RectRight(prc)-ICONWIDTH;
RectRight(rc) =
RectLeft(rc)+ICONWIDTH-1;
RectTop(rc) -= ICONHEIGHT;
RectBottom(rc) -= ICONHEIGHT;
if (RectTop(rc) < RectTop(prc)+1)
return LowerRight(prc);
}
break;
}
}
cwnd = NextWindow(cwnd);
}
}
return rc;
}
#endif
/* ----- terminate the move or size operation ----- */
static void TerminateMoveSize(void)
{
px = py = -1;
diff = 0;
SendMessage(&dwnd, RELEASE_MOUSE, TRUE, 0);
SendMessage(&dwnd, RELEASE_KEYBOARD, TRUE, 0);
RestoreBorder(dwnd.rc);
WindowMoving = WindowSizing = FALSE;
}
/* ---- build a dummy window border for moving or sizing --- */
static void near dragborder(WINDOW wnd, int x, int y)
{
RestoreBorder(dwnd.rc);
/* ------- build the dummy window -------- */
dwnd.rc.lf = x;
dwnd.rc.tp = y;
dwnd.rc.rt = dwnd.rc.lf+WindowWidth(wnd)-1;
dwnd.rc.bt = dwnd.rc.tp+WindowHeight(wnd)-1;
dwnd.ht = WindowHeight(wnd);
dwnd.wd = WindowWidth(wnd);
dwnd.parent = GetParent(wnd);
dwnd.attrib = VISIBLE | HASBORDER | NOCLIP;
InitWindowColors(&dwnd);
SaveBorder(dwnd.rc);
RepaintBorder(&dwnd, NULL);
}
/* ---- write the dummy window border for sizing ---- */
static void near sizeborder(WINDOW wnd, int rt, int bt)
{
int leftmost = GetLeft(wnd)+10;
int topmost = GetTop(wnd)+3;
int bottommost = SCREENHEIGHT-1;
int rightmost = SCREENWIDTH-1;
if (GetParent(wnd)) {
bottommost = min(bottommost,
GetClientBottom(GetParent(wnd)));
rightmost = min(rightmost,
GetClientRight(GetParent(wnd)));
}
rt = min(rt, rightmost);
bt = min(bt, bottommost);
rt = max(rt, leftmost);
bt = max(bt, topmost);
SendMessage(NULL, MOUSE_CURSOR, rt, bt);
if (rt != px || bt != py)
RestoreBorder(dwnd.rc);
/* ------- change the dummy window -------- */
dwnd.ht = bt-dwnd.rc.tp+1;
dwnd.wd = rt-dwnd.rc.lf+1;
dwnd.rc.rt = rt;
dwnd.rc.bt = bt;
if (rt != px || bt != py) {
px = rt;
py = bt;
SaveBorder(dwnd.rc);
RepaintBorder(&dwnd, NULL);
}
}
#ifdef INCLUDE_MULTI_WINDOWS
/* ----- adjust a rectangle to include the shadow ----- */
static RECT adjShadow(WINDOW wnd)
{
RECT rc;
rc = wnd->rc;
if (TestAttribute(wnd, SHADOW)) {
if (RectRight(rc) < SCREENWIDTH-1)
RectRight(rc)++;
if (RectBottom(rc) < SCREENHEIGHT-1)
RectBottom(rc)++;
}
return rc;
}
/* --- repaint a rectangular subsection of a window --- */
static void near PaintOverLap(WINDOW wnd, RECT rc)
{
if (isVisible(wnd)) {
int isBorder, isTitle, isData;
isBorder = isTitle = FALSE;
isData = TRUE;
if (TestAttribute(wnd, HASBORDER)) {
isBorder = RectLeft(rc) == 0 &&
RectTop(rc) < WindowHeight(wnd);
isBorder |= RectLeft(rc) < WindowWidth(wnd) &&
RectRight(rc) >= WindowWidth(wnd)-1 &&
RectTop(rc) < WindowHeight(wnd);
isBorder |= RectTop(rc) == 0 &&
RectLeft(rc) < WindowWidth(wnd);
isBorder |= RectTop(rc) < WindowHeight(wnd) &&
RectBottom(rc) >= WindowHeight(wnd)-1 &&
RectLeft(rc) < WindowWidth(wnd);
}
else if (TestAttribute(wnd, HASTITLEBAR))
isTitle = RectTop(rc) == 0 &&
RectRight(rc) > 0 &&
RectLeft(rc)<WindowWidth(wnd)-BorderAdj(wnd);
if (RectLeft(rc) >= WindowWidth(wnd)-BorderAdj(wnd))
isData = FALSE;
if (RectTop(rc) >= WindowHeight(wnd)-BottomBorderAdj(wnd))
isData = FALSE;
if (TestAttribute(wnd, HASBORDER)) {
if (RectRight(rc) == 0)
isData = FALSE;
if (RectBottom(rc) == 0)
isData = FALSE;
}
if (TestAttribute(wnd, SHADOW))
isBorder |= RectRight(rc) == WindowWidth(wnd) ||
RectBottom(rc) == WindowHeight(wnd);
if (isData) {
wnd->wasCleared = FALSE;
SendMessage(wnd, PAINT, (PARAM) &rc, TRUE);
}
if (isBorder)
SendMessage(wnd, BORDER, (PARAM) &rc, 0);
else if (isTitle)
DisplayTitle(wnd, &rc);
}
}
/* ------ paint the part of a window that is overlapped
by another window that is being hidden ------- */
static void PaintOver(WINDOW wnd)
{
RECT wrc, rc;
wrc = adjShadow(HiddenWindow);
rc = adjShadow(wnd);
rc = subRectangle(rc, wrc);
if (ValidRect(rc))
PaintOverLap(wnd, RelativeWindowRect(wnd, rc));
}
/* --- paint the overlapped parts of all children --- */
static void PaintOverChildren(WINDOW pwnd)
{
WINDOW cwnd = FirstWindow(pwnd);
while (cwnd != NULL) {
if (cwnd != HiddenWindow) {
PaintOver(cwnd);
PaintOverChildren(cwnd);
}
cwnd = NextWindow(cwnd);
}
}
/* -- recursive overlapping paint of parents -- */
static void PaintOverParents(WINDOW wnd)
{
WINDOW pwnd = GetParent(wnd);
if (pwnd != NULL) {
PaintOverParents(pwnd);
PaintOver(pwnd);
PaintOverChildren(pwnd);
}
}
/* - paint the parts of all windows that a window is over - */
static void near PaintOverLappers(WINDOW wnd)
{
HiddenWindow = wnd;
PaintOverParents(wnd);
}
/* --- paint those parts of a window that are overlapped --- */
static void near PaintUnderLappers(WINDOW wnd)
{
WINDOW hwnd = NextWindow(wnd);
while (hwnd != NULL) {
/* ------- test only at document window level ------ */
WINDOW pwnd = GetParent(hwnd);
/* if (pwnd == NULL || GetClass(pwnd) == APPLICATION) */ {
/* ---- don't bother testing self ----- */
if (isVisible(hwnd) && hwnd != wnd) {
/* --- see if other window is descendent --- */
while (pwnd != NULL) {
if (pwnd == wnd)
break;
pwnd = GetParent(pwnd);
}
/* ----- don't test descendent overlaps ----- */
if (pwnd == NULL) {
/* -- see if other window is ancestor --- */
pwnd = GetParent(wnd);
while (pwnd != NULL) {
if (pwnd == hwnd)
break;
pwnd = GetParent(pwnd);
}
/* --- don't test ancestor overlaps --- */
if (pwnd == NULL) {
HiddenWindow = GetAncestor(hwnd);
ClearVisible(HiddenWindow);
PaintOver(wnd);
SetVisible(HiddenWindow);
}
}
}
}
hwnd = NextWindow(hwnd);
}
/* --------- repaint all children of this window
the same way ----------- */
hwnd = FirstWindow(wnd);
while (hwnd != NULL) {
PaintUnderLappers(hwnd);
hwnd = NextWindow(hwnd);
}
}
#endif /* #ifdef INCLUDE_MULTI_WINDOWS */
/* --- save video area to be used by dummy window border --- */
static void SaveBorder(RECT rc)
{
RECT lrc;
int i;
short *cp;
Bht = RectBottom(rc) - RectTop(rc) + 1;
Bwd = RectRight(rc) - RectLeft(rc) + 1;
Bsave = DFrealloc(Bsave, (Bht + Bwd) * 4);
lrc = rc;
RectBottom(lrc) = RectTop(lrc);
getvideo(lrc, Bsave);
RectTop(lrc) = RectBottom(lrc) = RectBottom(rc);
getvideo(lrc, Bsave + Bwd);
cp = Bsave + Bwd * 2;
for (i = 1; i < Bht-1; i++) {
*cp++ = GetVideoChar(RectLeft(rc),RectTop(rc)+i);
*cp++ = GetVideoChar(RectRight(rc),RectTop(rc)+i);
}
}
/* ---- restore video area used by dummy window border ---- */
static void RestoreBorder(RECT rc)
{
if (Bsave != NULL) {
RECT lrc;
int i;
short *cp;
lrc = rc;