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/*
* Copyright 1991-1994 by The University of Texas at Austin
* All rights reserved.
*
* For infomation contact:
* Rick Watson
* University of Texas
* Computation Center, COM 1
* Austin, TX 78712
* r.watson@utexas.edu
* 512-471-3241
*/
#ifndef __MWERKS__
#include <Memory.h>
#include <OSUtils.h>
#include <QuickDraw.h>
#include <Resources.h>
#include <SysEqu.h>
#include <Traps.h>
#include <Types.h>
#include <Windows.h>
#endif
#include "WindowUtil.h"
#if 0
#include "glue.h"
#endif
#define topLeft(r) (((Point *) &(r))[0])
#define botRight(r) (((Point *) &(r))[1])
#undef GrayRgn
#define getGrayRgn() (* (RgnHandle*) 0x09EE)
void FindBestScreen(Rect *WindowRect, Rect *ScreenRect);
void FitRects(Rect *BaseRect, Rect *VictimRect);
Point PositionTemplate (Rect *BaseRect, ResType Type, register int ID,
int PercentH, int PercentV)
{
Point TopLeft;
Handle TemplateHand;
TopLeft.v = LMGetMBarHeight() << 1;
TopLeft.h = TopLeft.v;
TemplateHand = GetResource(Type, ID);
if (TemplateHand != NULL) {
LoadResource(TemplateHand);
if (ResError() == noErr) {
int TemplateState;
TemplateState = HGetState(TemplateHand);
HLock(TemplateHand);
TopLeft = PositionRect(BaseRect, (Rect *) *TemplateHand,
PercentH, PercentV);
HSetState(TemplateHand, TemplateState);
}
}
return (TopLeft);
}
Point PositionRect (Rect *BaseRect, Rect *VictimRect, int PercentH,
int PercentV)
{
char *dummy;
Point TopLeft;
BitMap *ScreenBits;
Rect ScreenRect;
Rect WindowRect;
ScreenBits = &qd.screenBits;
ScreenRect = ScreenBits->bounds;
ScreenRect.top += LMGetMBarHeight();
if (BaseRect == NULL) {
WindowRect = ScreenRect;
} else if (BaseRect == (Rect *) -1) {
WindowPtr Front;
Front = FrontWindow();
if (Front != NULL) {
GrafPtr OrigPort;
GetPort(&OrigPort);
SetPort(Front);
WindowRect = Front->portRect;
LocalToGlobal(&topLeft(WindowRect));
LocalToGlobal(&botRight(WindowRect));
SetPort(OrigPort);
} else
WindowRect = ScreenRect;
} else if (BaseRect == (Rect *) -2) {
GrafPtr OrigPort;
GetPort(&OrigPort);
if (OrigPort != NULL) {
WindowRect = OrigPort->portRect;
LocalToGlobal(&topLeft(WindowRect));
LocalToGlobal(&botRight(WindowRect));
} else
WindowRect = ScreenRect;
} else {
WindowRect = *BaseRect;
LocalToGlobal(&topLeft(WindowRect));
LocalToGlobal(&botRight(WindowRect));
}
/* Make the first attempt to position the window. */
AlignRect(&WindowRect, VictimRect, PercentH, PercentV);
/* Make certain that the window wonÕt be positioned off-screen.
If it would have been, find the closest on-screen position for it. */
PositionRectOnScreen(VictimRect, true);
/* Finish-up the positioning process. */
TopLeft = topLeft(*VictimRect);
return (TopLeft);
}
void AlignRect (register Rect *BaseRect, register Rect *VictimRect,
int PercentH, int PercentV)
{
Rect FixedRect;
int BaseLenH;
int BaseLenV;
int VictLenH;
int VictLenV;
int DivH;
int DivV;
DivH = 100 / PercentH;
DivV = 100 / PercentV;
BaseLenH = (BaseRect->right - BaseRect->left) / DivH;
BaseLenV = (BaseRect->bottom - BaseRect->top) / DivV;
VictLenH = VictimRect->right - VictimRect->left;
VictLenV = VictimRect->bottom - VictimRect->top;
FixedRect.left = (BaseRect->left + BaseLenH) - (VictLenH >> 1);
FixedRect.right = FixedRect.left + VictLenH;
FixedRect.top = (BaseRect->top + BaseLenV) - (VictLenV >> 1);
FixedRect.bottom = FixedRect.top + VictLenV;
*VictimRect = FixedRect;
}
Point PositionRectOnScreen (Rect *VictimRect, int TotallyOnScreen)
{
RgnHandle WindowRgn;
RgnHandle ResultRgn;
RgnHandle GrayRgn = getGrayRgn();
WindowRgn = NewRgn();
ResultRgn = NewRgn();
if (WindowRgn != NULL && ResultRgn != NULL) {
int Reposition;
Reposition = false;
RectRgn(WindowRgn, VictimRect);
if (TotallyOnScreen) {
/* GrayRgn tends to be set to 0xFFFFFFFF (-1) during startup. */
if ((long) GrayRgn != -1) {
UnionRgn(GrayRgn, WindowRgn, ResultRgn);
Reposition = EqualRgn(GrayRgn, ResultRgn) == 0;
}
} else {
if ((long) GrayRgn != -1) {
SectRgn(GrayRgn, WindowRgn, ResultRgn);
Reposition = EmptyRgn(ResultRgn);
}
}
if (Reposition) {
Rect ScreenRect;
FindBestScreen(VictimRect, &ScreenRect);
FitRects(&ScreenRect, VictimRect);
}
}
if (WindowRgn != NULL)
DisposeRgn(WindowRgn);
if (ResultRgn != NULL)
DisposeRgn(ResultRgn);
return (topLeft(VictimRect));
}
void FitRects (register Rect *BaseRect, register Rect *VictimRect)
{
int VOff;
int HOff;
if (VictimRect->top < BaseRect->top)
VOff = (BaseRect->top - VictimRect->top) + 8;
else if (VictimRect->bottom > BaseRect->bottom)
VOff = (BaseRect->bottom - VictimRect->bottom) - 8;
else
VOff = 0;
if (VictimRect->left < BaseRect->left)
HOff = (BaseRect->left - VictimRect->left) + 8;
else if (VictimRect->right > BaseRect->right)
HOff = (BaseRect->right - VictimRect->right) - 8;
else
HOff = 0;
OffsetRect(VictimRect, HOff, VOff);
}
void FindBestScreen (WindowRect, ScreenRect)
Rect *WindowRect;
Rect *ScreenRect;
{
SysEnvRec Environment;
SysEnvirons(1, &Environment);
if (Environment.hasColorQD) {
GDHandle GDHand;
GDHandle BestGD;
unsigned long BestBitCount;
GDHand = GetDeviceList();
BestGD = NULL;
BestBitCount = 0;
while (GDHand != NULL) {
Rect WindSect;
unsigned long BitCount;
WindSect = (*GDHand)->gdRect;
if (GDHand == GetMainDevice())
WindSect.top += LMGetMBarHeight();
SectRect(WindowRect, &WindSect, &WindSect);
if (EmptyRect(&WindSect) == false)
BitCount = (unsigned long) (WindSect.right - WindSect.left) * (unsigned long) (WindSect.bottom - WindSect.top);
else
BitCount = 0;
if (BitCount > BestBitCount) {
BestBitCount = BitCount;
BestGD = GDHand;
}
GDHand = GetNextDevice(GDHand);
}
if (BestGD == NULL)
BestGD = GetMainDevice();
*ScreenRect = (*BestGD)->gdRect;
} else {
BitMap *ScreenBits;
char *dummy;
ScreenBits = &qd.screenBits;
*ScreenRect = ScreenBits->bounds;
ScreenRect->top += LMGetMBarHeight();
}
}
/*
* Junk so Emacs will set local variables to be compatible with Mac/MPW.
* Should be at end of file.
*
* Local Variables:
* tab-width: 4
* End:
*/
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