Macintosh-SW
/
eudora-mac
mirror of https://github.com/evilneuro/eudora-mac.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
eudora-mac/utl.c

1 line
55 KiB
C
Executable File
Raw Permalink Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* Copyright (c) 2017, Computer History Museum
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted (subject to
the limitations in the disclaimer below) provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Computer History Museum nor the names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
DAMAGE. */
#include "utl.h"
#define FILE_NUM 42
/*______________________________________________________________________
utl.c - Utilities.
Copyright © 1988, 1989, 1990 Northwestern University. Permission is granted
to use this code in your own projects, provided you give credit to both
John Norstad and Northwestern University in your about box or document.
This module exports miscellaneous reusable utility routines.
_____________________________________________________________________*/
#pragma segment utl
/*______________________________________________________________________
Global Variables.
_____________________________________________________________________*/
static SysEnvRec TheWorld; /* system environment record */
static Boolean GotSysEnviron = false;
/* true if sys environ has been
gotten */
static CursHandle *CursArray; /* ptr to array of cursor handles */
static short NumCurs; /* number of cursors to rotate */
static short TickInterval; /* number of ticks between rotations */
static short CurCurs; /* index of current cursor */
static short LastTick; /* tick count at loast rotation */
static ModalFilterProcPtr Filter; /* dialog filter proc */
static short CancelItem; /* item number of cancel button */
/*______________________________________________________________________
utl_CenterDlogRect - Center a dialog rectangle.
Entry: rect = rectangle.
centerMain = true to center on main (menu bar) screen.
centerMain = false to center on the screen containing
the maximum intersection with the frontmost window.
Exit: rect = rectangle offset so that it is centered on
the specified screen, with twice as much space below
the rect as above.
See HIN 6.
_____________________________________________________________________*/
void utl_CenterDlogRect (Rect *rect, Boolean centerMain)
{
Rect screenRect; /* screen rectangle */
short mBHeight; /* menu bar height */
GDHandle gd; /* gdevice */
Rect windRect; /* window rectangle */
Boolean hasMB; /* true if screen contains menu bar */
mBHeight = utl_GetMBarHeight();
if (centerMain) {
screenRect = GetScreenBounds();
} else {
utl_GetWindGD(FrontWindow(), &gd, &screenRect, &windRect, &hasMB);
if (!hasMB) mBHeight = 0;
};
OffsetRect(rect,
(screenRect.right + screenRect.left - rect->right - rect->left) >> 1,
(screenRect.bottom + ((screenRect.top + mBHeight - rect->top)<<1) -
rect->bottom + 7) / 3);
}
/*______________________________________________________________________
utl_CenterRect - Center a rectangle on the main screen.
Entry: rect = rectangle.
Exit: rect = rectangle offset so that it is centered on
the main screen.
_____________________________________________________________________*/
void utl_CenterRect (Rect *rect)
{
Rect screenRect; /* main screen rectangle */
short mBHeight; /* menu bar height */
mBHeight = utl_GetMBarHeight();
screenRect = GetScreenBounds();
OffsetRect(rect,
(screenRect.right + screenRect.left - rect->right - rect->left) >> 1,
(screenRect.bottom - screenRect.top + mBHeight -
rect->bottom - rect->top) >> 1);
}
#ifdef NEVER
/*______________________________________________________________________
utl_CheckPack - Check to see if a package exists.
Entry: packNum = package number.
preload = true to preload package.
Exit: function result = true if package exists.
_____________________________________________________________________*/
Boolean utl_CheckPack (short packNum, Boolean preload)
{
short trapNum; /* trap number */
Handle h; /* handle to PACK resource */
/* Check to make sure the trap exists, by comparing its trap address to
the trap address of the unimplemented trap. */
trapNum = packNum + 0x1e7;
if (NGetTrapAddress(trapNum & 0x3ff, ToolTrap) ==
NGetTrapAddress(_Unimplemented & 0x3ff, ToolTrap)) return false;
/* Check to make sure the package exists on the System file or in
ROM. If it's not in ROM make it nonpurgeable, if requested. */
if (preload) {
if (utl_Rom64()) {
h = GetResource_('PACK', packNum);
if (!h) return false;
HNoPurge_(h);
} else {
*(unsigned short*)RomMapInsert = 0xFF00;
h = GetResource_('PACK', packNum);
if (!h) return false;
if ((*(unsigned long*)h & 0x00FFFFFF) <
*(unsigned long*)ROMBase) {
h = GetResource_('PACK', packNum);
HNoPurge_(h);
};
};
return true;
} else {
SetResLoad(false);
if (!utl_Rom64()) *(unsigned short*)RomMapInsert = 0xFF00;
h = GetResource_('PACK', packNum);
SetResLoad(true);
if (h) return true; else return false;
};
}
#endif
/*______________________________________________________________________
utl_CopyPString - Copy Pascal String.
Entry: dest = destination string.
source = source string.
_____________________________________________________________________*/
void utl_CopyPString (Str255 dest, Str255 source)
{
BMD(source,dest,*source+1);
}
/*______________________________________________________________________
utl_CouldDrag - Determine if a window could be dragged to a location.
Entry: windRect = window rectangle, in global coords.
offset = pixel offset used in DragRect calls.
Exit: function result = true if the window could have been
dragged to the specified position.
This routine is used when restoring windows to saved positions. According
to HIN 6, we must check to see if the window "could have been dragged to
the saved position."
The "offset" parameter is usually 4. When initializing the boundary rectangle
for DragWindow calls, normally the boundary rectangle of the desktop gray
region is inset by 4 pixels. If some value other than 4 is used, it should
be passed to CouldDrag as the "offset" parameter.
The algorithm used is the following: The routine computes the four squares
at the corners of the title bar. "true" is returned if and only if at least one
of these four squares is completely contained within the desktop gray region.
Three pixels are added to the offset to err on the side of requiring a larger
portion of the drag bar to be visible.
_____________________________________________________________________*/
Boolean utl_CouldDrag (WindowPtr theWindow,Rect *windRect, short offset, short titleBarHeight, short leftRimWidth)
{
RgnHandle rgn=nil; /* scratch region handle */
Boolean could; /* function result */
short corner; /* which corner */
Rect r; /* corner rectangle */
RgnHandle grayRgn;
rgn = NewRgn();
grayRgn = NewRgn();
if (grayRgn)
{
CopyRgn(GetGrayRgn(),grayRgn);
DockedWinRemove(grayRgn,theWindow);
}
{
could = false;
offset += 3;
for (corner = 1; corner <= 4; corner++) {
switch (corner) {
case 1:
r.top = windRect->top - titleBarHeight;
r.left = windRect->left;
break;
case 2:
r.top = windRect->top - offset;
r.left = windRect->left;
break;
case 3:
r.top = windRect->top - titleBarHeight;
r.left = windRect->right - offset;
break;
case 4:
r.top = windRect->top - offset;
r.left = windRect->right - offset;
break;
};
r.bottom = r.top + offset;
r.right = r.left + offset;
RectRgn(rgn, &r);
DiffRgn(rgn, grayRgn, rgn);
if (EmptyRgn(rgn)) {
could = true;
break;
};
};
}
if (rgn) DisposeRgn(rgn);
if (grayRgn) DisposeRgn(grayRgn);
return could;
}
#ifdef NEVER
/*______________________________________________________________________
utl_FixStdFile - Fix Standard File Pacakge.
This routine should be called before calling the Standard File
package if there's any chance that SFSaveDisk might specify
a volume that has been umounted. Standard File gets confused if this
happens and presents an alert telling the user that a "system error"
has occurred.
This routine checks to make sure that SFSaveDisk specifies a volume
that is still mounted. If not, it sets it to the first mounted
volume, and it sets CurDirStore to the root directory on that volume.
_____________________________________________________________________*/
void utl_FixStdFile (void)
{
ParamBlockRec vBlock; /* vol info param block */
vBlock.volumeParam.ioNamePtr = nil;
vBlock.volumeParam.ioVRefNum = -*(short*)SFSaveDisk;
vBlock.volumeParam.ioVolIndex = 0;
if (PBGetVInfo(&vBlock, false)) {
vBlock.volumeParam.ioVolIndex = 1;
(void) PBGetVInfo(&vBlock, false);
*(short*)SFSaveDisk = -vBlock.volumeParam.ioVRefNum;
if (*(short*)FSFCBLen > 0) *(long*)CurDirStore = fsRtDirID;
};
}
#endif
/*______________________________________________________________________
utl_FlashButton - Flash Dialog Button.
Entry: theDialog = pointer to dialog.
itemNo = item number of button to flash.
The push button is inverted for 8 ticks. See HIN #10.
_____________________________________________________________________*/
void utl_FlashButton (DialogPtr theDialog, short itemNo)
{
short itemType; /* item type */
Handle item; /* item handle */
Rect box; /* item rectangle */
short roundFactor; /* rounded corner factor for InvertRoundRect */
long tickEnd; /* tick count to end flash */
GetDialogItem(theDialog, itemNo, &itemType, &item, &box);
SetPort(GetDialogPort(theDialog));
roundFactor = (box.bottom - box.top)>>1;
InvertRoundRect(&box, roundFactor, roundFactor);
tickEnd = TickCount() + 8;
while (TickCount() < tickEnd);
InvertRoundRect(&box, roundFactor, roundFactor);
}
/*______________________________________________________________________
utl_FrameItem
Entry: theWindow = pointer to dialog window.
itemNo = dialog item number.
Exit: dialog item rectangle framed.
This function is for use as a Dialog Manager user item procedure.
It is particularly useful for drawing rules (straight lines). Simply
define the user item rectangle with bottom=top+1 or right=left+1.
_____________________________________________________________________*/
pascal void utl_FrameItem (DialogPtr theDialog, short itemNo)
{
short itemType; /* item type */
Handle item; /* item handle */
Rect box; /* item rectangle */
GetDialogItem(theDialog, itemNo, &itemType, &item, &box);
FrameRect(&box);
}
#ifdef NEVER
/*______________________________________________________________________
utl_GetApplVol - Get the volume reference number of the application volume.
Exit: function result = volume reference number of the volume
containing the current application.
_____________________________________________________________________*/
short utl_GetApplVol (void)
{
short vRefNum; /* vol ref num */
GetVRefNum(*(short*)(CurMap), &vRefNum);
return vRefNum;
}
#endif
/*______________________________________________________________________
utl_GetFontNumber - Get Font Number.
Entry: fontName = font name.
Exit: function result = true if font exists.
fontNum = font number.
Copied from TN 191.
_____________________________________________________________________*/
Boolean utl_GetFontNumber (Str255 fontName, short *fontNum)
{
Str255 systemFontName;
GetFNum(fontName, fontNum);
if (*fontNum) {
return true;
} else {
GetFontName(0, systemFontName);
return StringSame(fontName, systemFontName);
};
}
/*______________________________________________________________________
utl_GetMBarHeight - Get Menu Bar Height
Exit: function result = menu bar height.
See TN 117.
_____________________________________________________________________*/
short utl_GetMBarHeight (void)
{
static short mBHeight = 0;
if (!mBHeight) {
mBHeight = utl_Rom64() ? 20 : GetMBarHeight();
};
return mBHeight;
}
/*______________________________________________________________________
utl_GetNewControl_ - Get New Control.
Entry: controlID = resource id of CNTL resource.
theWindow = pointer to window record.
Exit: function result = handle to new control record.
This routine is identical to the Control Manager routine GetNewControl_,
except it does not release or make purgeable the CNTL resource.
_____________________________________________________________________*/
ControlHandle utl_GetNewControl (short controlID,
WindowPtr theWindow)
{
Rect boundsRect; /* boundary rectangle */
short value; /* initial control value */
Boolean visible; /* true if visible */
short max; /* max control value */
short min; /* min control value */
short procID; /* window proc id */
long refCon; /* refCon field for window record */
Str255 title; /* window title */
Handle theRez; /* handle to CNTL resource */
theRez = GetResource_('CNTL', controlID);
boundsRect = *(Rect*)(*theRez);
value = *(short*)(*theRez+8);
visible = *(Boolean*)(*theRez+10);
max = *(short*)(*theRez+12);
min = *(short*)(*theRez+14);
procID = *(short*)(*theRez+16);
refCon = *(long*)(*theRez+18);
utl_CopyPString(title, *theRez+22);
return NewControl(theWindow, &boundsRect, title, visible, value,
min, max, procID, refCon);
}
/*______________________________________________________________________
utl_GetNewDialog - Get New Dialog.
Entry: dialogID = resource id of DLOG resource.
dStorage = pointer to dialog record.
behind = window to insert in back of.
Exit: function result = pointer to new dialog record.
This routine is identical to the Dialog Manager routine GetNewDialog,
except it does not release or make purgeable the DLOG resource.
_____________________________________________________________________*/
DialogPtr utl_GetNewDialog (short dialogID, Ptr dStorage,
WindowPtr behind)
{
Rect boundsRect; /* boundary rectangle */
short procID; /* window proc id */
Boolean visible; /* true if visible */
Boolean goAwayFlag; /* true if window has go away box */
long refCon; /* refCon field for window record */
Str255 title; /* window title */
Handle theRez; /* handle to DLOG resource */
short itemID; /* rsrc id of item list */
Handle items; /* handle to item list */
theRez = GetResource_('DLOG', dialogID);
boundsRect = *(Rect*)(*theRez);
procID = *(short*)(*theRez+8);
visible = *(Boolean*)(*theRez+10);
goAwayFlag = *(Boolean*)(*theRez+12);
refCon = *(long*)(*theRez+14);
itemID = *(short*)(*theRez+18);
utl_CopyPString(title, *theRez+20);
items = GetResource_('DITL', itemID);
return NewDialog(dStorage, &boundsRect, title, visible, procID, behind,
goAwayFlag, refCon, items);
}
/*______________________________________________________________________
utl_GetNewWindow - Get New Window.
Entry: windowID = resource id of WIND resource.
wStorage = pointer to window record.
behind = window to insert in back of.
Exit: function result = pointer to new window record.
This routine is identical to the Window Manager routine GetNewWindow,
except it does not release or make purgeable the WIND resource.
_____________________________________________________________________*/
WindowPtr utl_GetNewWindow (short windowID, Ptr wStorage,
WindowPtr behind)
{
Rect boundsRect; /* boundary rectangle */
short procID; /* window proc id */
Boolean visible; /* true if visible */
Boolean goAwayFlag; /* true if window has go away box */
long refCon; /* refCon field for window record */
Str255 title; /* window title */
Handle theRez; /* handle to WIND resource */
theRez = GetResource_('WIND', windowID);
boundsRect = *(Rect*)(*theRez);
procID = *(short*)(*theRez+8);
visible = *(Boolean*)(*theRez+10);
goAwayFlag = *(Boolean*)(*theRez+12);
refCon = *(long*)(*theRez+14);
utl_CopyPString(title, *theRez+18);
return NewWindow(wStorage, &boundsRect, title, visible, procID, behind,
goAwayFlag, refCon);
}
#ifdef NEVER
/*______________________________________________________________________
utl_GetSysVol - Get the volume reference number of the system volume.
Exit: function result = volume reference number of the volume
containing the currently active system file.
_____________________________________________________________________*/
short utl_GetSysVol (void)
{
short vRefNum; /* vol ref num */
GetVRefNum(*(short*)(SysMap), &vRefNum);
return vRefNum;
}
#endif
/*______________________________________________________________________
utl_GetWindGD - Get the GDevice containing a window.
Entry: theWindow = pointer to window.
Exit: gd = handle to GDevice, or nil if no color QD.
screenRect = bounding rectangle of GDevice, or
qd.screenBits.bounds if no color QD.
windRect = content rectangle of window, in global
coords.
hasMB = true if this screen contains the menu bar.
The routine determines the GDevice (screen) containing the maximum
intersection with a window. See TN 79.
_____________________________________________________________________*/
void utl_GetWindGD (WindowPtr theWindow, GDHandle *gd,
Rect *screenRect, Rect *windRect, Boolean *hasMB)
{
GrafPtr savePort; /* saved grafport */
GetPortBounds(GetWindowPort(theWindow),windRect);
GetPort(&savePort);
SetPort(GetWindowPort(theWindow));
LocalToGlobal((Point*)&windRect->top);
LocalToGlobal((Point*)&windRect->bottom);
utl_GetRectGDStuff(gd,screenRect,windRect,TitleBarHeight(theWindow),LeftRimWidth(theWindow),hasMB);
SetPort_(savePort);
}
void utl_GetRectGDStuff (GDHandle *gd,
Rect *screenRect, Rect *windRect, short titleBarHeight, short leftRimWidth,Boolean *hasMB)
{
Rect sectRect; /* intersection rect */
GDHandle curDevice; /* current GDevice */
GDHandle dominantDevice; /* dominant GDevice */
long sectArea; /* intersection area */
long maxArea; /* max intersection area */
if (utl_HaveColor()) {
windRect->top -= titleBarHeight;
windRect->left -= leftRimWidth;
curDevice = GetDeviceList();
maxArea = 0;
dominantDevice = nil;
while (curDevice) {
if (TestDeviceAttribute(curDevice, screenDevice) &&
TestDeviceAttribute(curDevice, screenActive)) {
SectRect(windRect, &(**curDevice).gdRect, &sectRect);
sectArea = (long)(sectRect.right - sectRect.left) *
(long)(sectRect.bottom - sectRect.top);
if (sectArea > maxArea) {
maxArea = sectArea;
dominantDevice = curDevice;
};
};
curDevice = GetNextDevice(curDevice);
};
windRect->top += titleBarHeight;
windRect->left += leftRimWidth;
if (dominantDevice) {
*gd = dominantDevice;
*screenRect = (**dominantDevice).gdRect;
*hasMB = dominantDevice == GetMainDevice();
} else {
*gd = nil;
*screenRect = GetScreenBounds();
*hasMB = true;
};
} else {
*gd = nil;
*screenRect = GetScreenBounds();
*hasMB = true;
};
}
/*______________________________________________________________________
utl_GetRectGD - Get the GDevice containing a rect.
Entry: windRect - pointer to the rectangle
Exit: gd = handle to GDevice, or nil if no color QD.
The routine determines the GDevice (screen) containing the maximum
intersection with a rect. See TN 79.
_____________________________________________________________________*/
void utl_GetRectGD (Rect *windRect, GDHandle *gd)
{
Rect sectRect; /* intersection rect */
GDHandle curDevice; /* current GDevice */
GDHandle dominantDevice; /* dominant GDevice */
long sectArea; /* intersection area */
long maxArea; /* max intersection area */
if (utl_HaveColor()) {
curDevice = GetDeviceList();
maxArea = 0;
dominantDevice = nil;
while (curDevice) {
if (TestDeviceAttribute(curDevice, screenDevice) &&
TestDeviceAttribute(curDevice, screenActive)) {
SectRect(windRect, &(**curDevice).gdRect, &sectRect);
sectArea = (long)(sectRect.right - sectRect.left) *
(long)(sectRect.bottom - sectRect.top);
if (sectArea > maxArea) {
maxArea = sectArea;
dominantDevice = curDevice;
};
};
curDevice = GetNextDevice(curDevice);
};
if (dominantDevice) {
*gd = dominantDevice;
} else {
*gd = nil;
};
} else {
*gd = nil;
};
}
/*______________________________________________________________________
utl_GetIndGD - Get the nth GDevice.
Entry: n = device index.
Exit: gd = handle to GDevice, or nil if no color QD.
screenRect = bounding rectangle of GDevice, or
qd.screenBits.bounds if no color QD.
hasMB = true if this screen contains the menu bar.
_____________________________________________________________________*/
void utl_GetIndGD (short n,GDHandle *gd, Rect *screenRect, Boolean *hasMB)
{
GDHandle curDevice; /* current GDevice */
GDHandle dominantDevice; /* dominant GDevice */
if (utl_HaveColor()) {
dominantDevice = nil;
curDevice = GetDeviceList();
while (curDevice && n--) {
if (TestDeviceAttribute(curDevice, screenDevice) &&
TestDeviceAttribute(curDevice, screenActive))
dominantDevice = curDevice;
curDevice = GetNextDevice(curDevice);
}
if (dominantDevice) {
if (gd) *gd = dominantDevice;
if (screenRect) *screenRect = (**dominantDevice).gdRect;
if (hasMB) *hasMB = dominantDevice == GetMainDevice();
} else {
if (gd) *gd = nil;
if (screenRect) *screenRect = GetScreenBounds();
if (hasMB) *hasMB = true;
};
} else {
if (gd) *gd = nil;
if (screenRect) *screenRect = GetScreenBounds();
if (hasMB) *hasMB = true;
};
}
/*______________________________________________________________________
utl_GetVolFilCnt - Get the number of files on a volume.
Entry: volRefNum = volume reference number of volume.
Exit: function result = number of files on volume.
For serdver volumes this function always returns 0.
_____________________________________________________________________*/
long utl_GetVolFilCnt (short volRefNum)
{
HParamBlockRec pBlock; /* param block for PHBGetVInfo */
pBlock.volumeParam.ioNamePtr = nil;
pBlock.volumeParam.ioVRefNum = volRefNum;
pBlock.volumeParam.ioVolIndex = 0;
(void) PBHGetVInfo(&pBlock, false);
return pBlock.volumeParam.ioVFilCnt;
}
/*______________________________________________________________________
utl_HaveColor - Determine if system has color QuickDraw.
Exit: function result = true if we have color QD.
_____________________________________________________________________*/
Boolean utl_HaveColor (void)
{
#if 0
SInt32 gestaltResult;
if (!Gestalt(gestaltQuickdrawFeatures, &gestaltResult))
return (gestaltResult & gestaltHasColor) != 0;
return false; // shouldn't happen
#endif
return true;
}
/*______________________________________________________________________
utl_InitSpinCursor - Initialize animated cursor.
Entry: cursArray = array of handles to cursors.
numCurs = number of cursors to rotate.
tickInterval = interval between cursor rotations.
_____________________________________________________________________*/
void utl_InitSpinCursor (CursHandle *cursArray, short numCurs,
short tickInterval)
{
CursHandle h;
CursArray = cursArray;
CurCurs = 0;
NumCurs = numCurs;
TickInterval = tickInterval;
LastTick = TickCount();
h = *cursArray;
SetCursor(*h);
}
/*______________________________________________________________________
utl_InvalGrow - Invalidate Grow Icon.
Entry: theWindow = pointer to window.
This routine should be called before and after calling SizeWindow
for windows with grow icons.
_____________________________________________________________________*/
void utl_InvalGrow (WindowPtr theWindow)
{
Rect r; /* rect to be invalidated */
GetPortBounds(GetWindowPort(theWindow),&r);
r.top = r.bottom - 15;
r.left = r.right - 15;
InvalWindowRect(theWindow,&r);
}
/*______________________________________________________________________
utl_IsDAWindow - Check to see if a window is a DA.
Entry: theWindow = pointer to dialog window.
Exit: function result = true if DA window.
_____________________________________________________________________*/
Boolean utl_IsDAWindow (WindowPtr theWindow)
{
return GetWindowKind(theWindow) < 0;
}
/*______________________________________________________________________
utl_IsLaser - Check Printer for LaserWriter.
Entry: hPrint = handle to print record.
Exit: function result = true if LaserWriter.
_____________________________________________________________________*/
#if 0
Boolean utl_IsLaser (THPrint hPrint)
{
unsigned char wDev; /* printer device */
wDev = (**hPrint).prStl.wDev >> 8;
return wDev==3 || wDev==4;
}
#endif
/*______________________________________________________________________
utl_PlugParams - Plug parameters into message.
Entry: line1 = input line.
p0, p1, p2, p3 = parameters.
Exit: line2 = output line.
This routine works just like the toolbox routine ParamText.
The input line may contain place-holders ^0, ^1, ^2, and ^3,
which are replaced by the parameters p0-p3. The input line
must not contain any other ^ characters. The input and output lines
may not be the same string. Pass nil for parameters which don't
occur in line1. If the output line exceeds 255 characters it's
truncated.
_____________________________________________________________________*/
void utl_PlugParams (Str255 line1, Str255 line2, Str255 p0,
Str255 p1, Str255 p2, Str255 p3)
{
/* MJN *//* changed type declaration for in, out, inEnd, outEnd, and param from char* to unsigned char*,
so that this routine will work properly with strings over 127 characters in length */
unsigned char *in; /* pointer to cur pos in input line */
unsigned char *out; /* pointer to cur pos in output line */
unsigned char *inEnd; /* pointer to end of input line */
unsigned char *outEnd; /* pointer to end of output line */
unsigned char *param; /* pointer to param to be plugged */
short len; /* length of param */
in = line1+1;
out = line2+1;
inEnd = line1 + 1 + *line1;
outEnd = line2 + 256;
while (in < inEnd ) {
if (*in == '^') {
in++;
if (in >= inEnd) break;
switch (*in++) {
case '0':
param = p0;
break;
case '1':
param = p1;
break;
case '2':
param = p2;
break;
case '3':
param = p3;
break;
default:
continue;
};
if (!param) continue;
len = *param;
if (out + len > outEnd) len = outEnd - out;
BMD(param+1,out,len);
out += len;
} else {
if (out >= outEnd) break;
*out++ = *in++;
};
};
*line2 = out - (line2+1);
}
/*______________________________________________________________________
utl_RestoreWindowPos - Restore Window Position.
Entry: theWindow = pointer to window.
userState = saved user state rectangle for the window.
zoomed = true if window in zoomed state when saved.
offset = pixel offset used in DragRect calls.
computeStdState = pointer to function to compute standard state.
computeDefState = pointer to function to compute default state.
Exit: window position, size, and zoom state restored.
userState = new user state.
See HIN 6: "When reopening a movable window, check its saved
position. If the window is in a position to which the user could
have dragged it, then leave it there. If the window can be zoomed
and was in the zoomed state when it was last closed, put it in the
zoomed state again. (Note that the current and previous zoomed states
are not necessarily the same, since the window may be reopened on a
different monitor.) If the window is not in a position to which the
user could have dragged it, then it must be relocated, so use the
default location. However, do not automatically use the default size
when using the default location; if the entire window would be visible
using the default location and stored size, then use the stored size."
The "offset" parameter is usually 4. When initializing the boundary rectangle
for DragWindow calls, normally the boundary rectangle of the desktop gray
region is inset by 4 pixels. If some value other than 4 is used, it should
be passed to RestoreWindowPos as the "offset" parameter.
The computeStdState function is passed a pointer to the window. Given
the userState in the window zoom info, it must compute the standard
(zoom) state in the window zoom info. This is an application-dependent
function.
The computeDefState function must determine the default position and
size of a new window, and return the result as a rectangle. This may
involve invocation of a staggering algorithm or some other algorithm.
This is an application-dependent function.
Changed to keep window smaller than the desktop's bounding box.
(s-dorner@uiuc.edu, 12/16/91)
_____________________________________________________________________*/
void utl_RestoreWindowPos (WindowPtr theWindow, Rect *userState,
Boolean zoomed, short offset, short titleBarHeight, short leftRimWidth,
utl_ComputeStdStatePtr computeStdState,
utl_ComputeDefStatePtr computeDefState)
{
MyWindowPtr win; /* pointer to one of our own window structures */
WindowPtr winWP;
short userHeight; /* height of userState */
short userWidth; /* width of userState */
Rect r; /* scratch rectangle */
RgnHandle rgn; /* scratch region */
Rect stdState; /* standard state */
short windHeight; /* window height */
short windWidth; /* window width */
win = GetWindowMyWindowPtr (theWindow);
if (!win)
return;
winWP = GetMyWindowWindowPtr(win);
SanitizeSize(win,userState);
if (titleBarHeight>0 && !utl_CouldDrag(theWindow,userState, offset,titleBarHeight,leftRimWidth)) {
userHeight = userState->bottom - userState->top;
userWidth = userState->right - userState->left;
(*computeDefState)(theWindow, userState);
if (!zoomed) {
r = *userState;
r.bottom = r.top + userHeight;
r.right = r.left + userWidth;
r.top -= titleBarHeight;
r.left -= leftRimWidth;
InsetRect(&r, -1, -1);
rgn = NewRgn();
RectRgn(rgn, &r);
DiffRgn(rgn, GetGrayRgn(), rgn);
if (EmptyRgn(rgn)) {
userState->bottom = userState->top + userHeight;
userState->right = userState->left + userWidth;
};
DisposeRgn(rgn);
};
};
MoveWindow(theWindow, userState->left, userState->top, false);
windHeight = userState->bottom - userState->top;
windWidth = userState->right - userState->left;
if (!win->isRunt) SizeWindow(theWindow, windWidth, windHeight, true);
SetWindowUserState(winWP,userState);
(*computeStdState)(theWindow);
if (zoomed) {
GetWindowStandardState(winWP,&stdState);
MoveWindow(theWindow, stdState.left, stdState.top, false);
windHeight = stdState.bottom - stdState.top;
windWidth = stdState.right - stdState.left;
if (!win->isRunt) SizeWindow(theWindow, windWidth, windHeight, true);
};
}
/*______________________________________________________________________
utl_Rom64 - Check to see if we have the old 64K ROM.
Exit: function result = true if 64K ROM.
_____________________________________________________________________*/
Boolean utl_Rom64 (void)
{
return(False);
#ifdef NEVER
return *(short*)ROM85 < 0;
#endif
}
/*______________________________________________________________________
utl_RFSanity - Check a Resource File's Sanity.
Entry: *fName = file name.
Exit: *sane = true if resource fork is sane.
function result = error code.
This routine checks the sanity of a resource file. The Resource Manager
does not do error checking, and can bomb or hang if you use it to open
a damaged resource file. This routine can be called first to precheck
the file.
The routine checks the entire resource map.
It is the caller's responsibility to set the proper default volume and
directory.
_____________________________________________________________________*/
OSErr utl_RFSanity (FSSpecPtr spec, Boolean *sane)
{
short refNum; /* file refnum */
long count; /* number of bytes to read */
long logEOF; /* logical EOF */
Ptr map; /* pointer to resource map */
unsigned long dataLWA; /* offset in file of data end */
unsigned long mapLWA; /* offset in file of map end */
unsigned short typeFWA; /* offset from map begin to type list */
unsigned short nameFWA; /* offset from map begin to name list */
unsigned char *pType; /* pointer into type list */
unsigned char *psName; /* pointer to start of name list */
unsigned char *pMapEnd; /* pointer to end of map */
short nType; /* number of resource types in map */
unsigned char *pTypeEnd; /* pointer to end of type list */
short nRes; /* number of resources of given type */
unsigned short refFWA; /* offset from type list to ref list */
unsigned char *pRef; /* pointer into reference list */
unsigned char *pRefEnd; /* pointer to end of reference list */
unsigned short resNameFWA; /* offset from name list to resource name */
unsigned char *pResName; /* pointer to resource name */
unsigned long resDataFWA; /* offset from data begin to resource data */
Boolean mapOK; /* true if map is sane */
OSErr rCode; /* error code */
struct {
unsigned long dataFWA; /* offset in file of data */
unsigned long mapFWA; /* offset in file of map */
unsigned long dataLen; /* data area length */
unsigned long mapLen; /* map area length */
} header;
/* Open the resource file. */
if (rCode = FSpOpenRF(spec,fsRdPerm,&refNum)) {
if (rCode == fnfErr || rCode == permErr) {
*sane = true;
return noErr;
} else {
return rCode;
};
};
/* Get the logical eof of the file. */
if (rCode = GetEOF(refNum, &logEOF)) return rCode;
if (!logEOF) {
*sane = true;
if (rCode = MyFSClose(refNum)) return rCode;
return noErr;
};
/* Read and validate the resource header. */
count = 16;
if (rCode = ARead(refNum, &count, (Ptr)&header)) {
MyFSClose(refNum);
return rCode;
};
dataLWA = header.dataFWA + header.dataLen;
mapLWA = header.mapFWA + header.mapLen;
mapOK = count == 16;
mapOK = mapOK && header.mapLen > 28;
mapOK = mapOK && header.dataFWA < 0x01000000;
mapOK = mapOK && header.mapFWA < 0x01000000;
mapOK = mapOK && dataLWA <= logEOF;
mapOK = mapOK && mapLWA <= logEOF;
mapOK = mapOK && (dataLWA <= header.mapFWA || mapLWA <= header.dataFWA);
/* Read the resource map. */
map = nil;
if (mapOK) {
map = NuPtr(header.mapLen);
if (!map) rCode = MemError();
else if (!(rCode = SetFPos(refNum, fsFromStart, header.mapFWA))) {
count = header.mapLen;
rCode = ARead(refNum, &count, map);
};
};
/* Verify the type list and name list offsets. */
if (mapOK && !rCode) {
typeFWA = *(unsigned short*)(map+24);
nameFWA = *(unsigned short*)(map+26);
mapOK = typeFWA == 28 && nameFWA >= typeFWA && nameFWA <= header.mapLen &&
!(typeFWA & 1) && !(nameFWA & 1);
};
/* Verify the type list, reference lists, and name list. */
if (mapOK && !rCode) {
pType = map + typeFWA;
psName = map + nameFWA;
pMapEnd = map + header.mapLen;
nType = *(short*)pType + 1;
pType += 2;
pTypeEnd = pType + (nType<<3);
if (mapOK = pTypeEnd <= pMapEnd) {
while (pType < pTypeEnd) {
nRes = *(short*)(pType+4) + 1;
refFWA = *(unsigned short*)(pType+6);
pRef = map + typeFWA + refFWA;
pRefEnd = pRef + 12*nRes;
if (!(mapOK = pRef >= pTypeEnd && pRef < psName &&
!(refFWA & 1))) break;
while (pRef < pRefEnd) {
resNameFWA = *(unsigned short*)(pRef+2);
if (resNameFWA != 0xFFFF) {
pResName = psName + resNameFWA;
if (!(mapOK = pResName + *pResName < pMapEnd)) break;
};
resDataFWA = *(unsigned long*)(pRef+4) & 0x00FFFFFF;
if (!(mapOK = header.dataFWA + resDataFWA < dataLWA)) break;
pRef += 12;
};
if (!mapOK) break;
pType += 8;
};
};
};
/* Dispose of the resource map, close the file and return. */
if (map) ZapPtr(map);
if (!rCode) {
rCode = MyFSClose(refNum);
} else {
(void) MyFSClose(refNum);
};
*sane = mapOK;
return rCode;
}
/*______________________________________________________________________
utl_SaveWindowPos - Save Window Position.
Entry: theWindow = window pointer.
Exit: userState = user state rectangle of the window.
zoomed = true if window zoomed.
See HIN 6: "Before closing a movable window, check to see if its
location or size have changed. If so, save the new location and
size. If the window can be zoomed, save the user state and also
save whether or not the window is in the zoomed (standard) sate."
We assume in this routine that the caller has already kept track
of the fact that this window's location or size has changed, and that
we do indeed need to save the location and size.
This routine only works if the window's origin has not been offset.
_____________________________________________________________________*/
void utl_SaveWindowPos (WindowPtr theWindow, Rect *userState, Boolean *zoomed)
{
GrafPtr savedPort; /* saved grafport */
Rect curState; /* current window rect, global coords */
Rect stdState; /* standard (zoom) rect, global coords */
Point p; /* scratch point */
Rect r; /* scratch rect */
GetPort(&savedPort);
SetPort_(GetWindowPort(theWindow));
SetPt(&p, 0, 0);
LocalToGlobal(&p);
GetPortBounds(GetWindowPort(theWindow),&curState);
OffsetRect(&curState, p.h, p.v);
if (IsKnownWindowMyWindow(theWindow))
{
MyWindowPtr win = GetWindowMyWindowPtr(theWindow);
if (!RectHi(curState) || RectHi(curState)<win->minSize.v)
curState.bottom = curState.top + MAX(win->minSize.v,RectHi(win->contR));
}
/* Determine if window is zoomed. The criteria is that both the
top left and bottom right corners of the current window rectangle
and the standard (zoom) rectangle must be within 7 pixels of each
other. This is the same algorithm as the one used by the standard
system window definition function. */
*zoomed = false;
GetWindowStandardState(theWindow,&stdState);
SetPt(&p, curState.left, curState.top);
SetRect(&r, stdState.left, stdState.top, stdState.left, stdState.top);
InsetRect(&r, -7, -7);
if (PtInRect(p, &r)) {
SetPt(&p, curState.right, curState.bottom);
SetRect(&r, stdState.right, stdState.bottom, stdState.right,
stdState.bottom);
InsetRect(&r, -7, -7);
*zoomed = PtInRect(p, &r);
};
if (*zoomed) {
GetWindowUserState(theWindow,userState);
} else {
*userState = curState;
};
SetPort_(savedPort);
}
/*______________________________________________________________________
utl_ScaleFontSize - Scale Font Size
Entry: fontNum = font number.
fontSize = nominal font size.
percent = percent change in size.
laser = true if laserwriter.
Exit: function result = scaled font size.
The nominal font size is multiplied by the percentage,
then truncated. For non-laserwriters it is then rounded down
to the nearest font size which is available in that true size,
without font manager scaling, or which can be generated by doubling
an existing font size.
_____________________________________________________________________*/
short utl_ScaleFontSize (short fontNum, short fontSize, short percent,
Boolean laser)
{
short nSize; /* new size */
short x; /* new test size */
nSize = fontSize * percent / 100;
if (!laser) {
x = nSize;
while (x > 0) {
if (RealFont(fontNum, x)) break;
if (!(x&1) && RealFont(fontNum, x>>1)) break;
x--;
};
if (x) nSize = x;
};
return nSize;
}
/*______________________________________________________________________
utl_SpinCursor - Animate cursor.
After calling InitSpinCursor to initialize an animated cursor, call
SpinCursor periodically to make the cursor animate.
_____________________________________________________________________*/
void utl_SpinCursor (void)
{
CursHandle h; /* handle to cursor */
long ticksNow; /* current tick count */
ticksNow = TickCount();
if (ticksNow < LastTick + TickInterval) return;
LastTick = ticksNow;
CurCurs++;
if (CurCurs >= NumCurs) CurCurs = 0;
h = CursArray[CurCurs];
SetCursor(*h);
}
/*______________________________________________________________________
utl_StaggerWindow - Stagger a New Window
Entry: windRect = window portrect.
initialOffset = intitial pixel offset of window from corner.
offset = offset for subsequent staggered windows.
Exit: pos = window position.
According to HIN 6, a new window should be positioned as follows:
"The first document window should be positioned in the upper-left corner
of the gray area of the main screen (the screen with the menu bar).
Each additional independent window should be staggered from the upper-left
corner of the screen that contains the largest portion of the
frontmost window." Also, "When a window is used or closed, its original
position becomes available again. The next window opened should use this
position. Similarly, if a window is moved onto a previously available
position, that position becomes unavailable again."
This routine implements these rules. A position is considered to be
"unavailable" if some other window is within (offset+1)/2 pixels of the
position in both the vertical and horizontal directions.
If all slots are occupied, the routine attempts to locate the first one
which is occupied by only one other window. If this attempt fails, it
tries to locate one which is occupied by only two other windows, etc.
Thus, if the screen is filled with staggered windows, subsequent windows
will be staggered on top of the existing ones, forming a second "layer."
If this layer fills up, a third layer is started, etc.
Steve Dorner, UIUC Computing Services Office 9/27/90
Invisible windows are no longer considered by the function.
Horizontal offset is 2 pixels on small screens
Steve Dorner, UIUC Computing Services Office 3/92
Leaving 2 pixel margin at screen bottom to allow for autoscroll
Added optional insets
Steve Dorner, UIUC Computing Services Office 4/92
Added parameter for specifying a particular device
_____________________________________________________________________*/
#define SIZE_9 540 /* a 9" (or so) screen */ /* sd */
#define OFF_9 3 /* horizontal offset for 9" screen */ /* sd */
void utl_StaggerWindow (WindowPtr theWindow,Rect *windRect, short initialOffset, short offset, short titleBarHeight, short leftRimWidth,
Point *pos,short specificDevice)
{
MyWindowPtr win; /* pointer to one of our own window structures */
GrafPtr savedPort; /* saved grafport */
short offsetDiv2; /* offset/2 */
short windHeight; /* window height */
short windWidth; /* window width */
WindowPtr frontWind; /* pointer to front window */
GDHandle gd; /* GDevice */
Rect screenRect; /* screen rectangle */
Rect junkRect; /* window rectangle */
Boolean hasMB; /* true if screen has menu bar */
Point initPos; /* initial staggered window position */
Point curPos; /* current staggered window position */
WindowPtr curWind; /* pointer to current window */
MyWindowPtr curWindWin; /* the MyWindow version of the current window */
Point windPos; /* current window position */
short deltaH; /* horizontal distance */
short deltaV; /* vertical distance */
short layer; /* layer number */
short nOccupied; /* number windows occupying cur pos */
Boolean noPos; /* true if no position is on screen */
Boolean is9; /* is this a 9" screen? */ /* sd */
win = GetWindowMyWindowPtr (theWindow);
GetPort(&savedPort);
offsetDiv2 = (offset+1)>>1;
windHeight = windRect->bottom - windRect->top;
windWidth = windRect->right - windRect->left;
frontWind = UglyHackFrontWindow ? UglyHackFrontWindow : FindTopUserWindow();
gd = nil;
if (specificDevice) {
utl_GetIndGD(specificDevice,&gd,&screenRect,&hasMB);
} else if (frontWind) {
utl_GetWindGD(frontWind, &gd, &screenRect, &junkRect, &hasMB);
}
if (!gd)
{
gd = GetMainDevice();
hasMB = true;
screenRect = (*gd)->gdRect;
};
if (!IsMyWindow(theWindow) || (win && win->windowType!=kDockable))
{
GetDisplayRect(gd,&screenRect); // Normal window; get normal rectangle
InsetRect(&screenRect,3,3);
}
else
if (hasMB) screenRect.top += utl_GetMBarHeight(); // docked - just avoid menu bar
SetPt(&initPos, screenRect.left + initialOffset + leftRimWidth,
screenRect.top + initialOffset + titleBarHeight);
is9 = screenRect.right-screenRect.left<=SIZE_9; /* sd */
layer = 1;
while (true) {
/* Test each layer number "layer", starting with 1 and incrementing by 1.
Break out of the loop when we find a position curPos which
is "occupied" by fewer than "layer" other windows. */
curPos = initPos;
noPos = true;
while (true) {
/* Test each possible position curPos. Break out of the loop
when we have exhaused the possible positions, or when we
have located one which has < layer "occupants". */
curWind = frontWind;
#ifndef NEWWAY
if (curPos.v + windHeight >= screenRect.bottom ||
curPos.h + windWidth >= screenRect.right) {
break;
};
#else
if (curPos.h + windWidth >= screenRect.right) break;
if (curPos.v + windHeight >= screenRect.bottom) curPos.v = initPos.v;
#endif
noPos = false;
nOccupied = 0;
while (curWind) {
Boolean hideme;
/* Scan the window list and count up how many of them "occupy"
the current location curPos. Break out of the loop when
we reach the end of the list, or when the count is >=
layer. */
curWindWin = GetWindowMyWindowPtr (curWind);
hideme = curWindWin ? curWindWin->hideme : false;
if (IsWindowVisible(curWind) && !(IsKnownWindowMyWindow(curWind) && hideme)) { /* sd */
SetPt(&windPos, 0, 0);
SetPort_(GetWindowPort(curWind));
LocalToGlobal(&windPos);
deltaH = curPos.h - windPos.h;
deltaV = curPos.v - windPos.v;
if (deltaH < 0) deltaH = -deltaH;
if (deltaV < 0) deltaV = -deltaV;
if (deltaH <= offsetDiv2 && deltaV <= offsetDiv2) {
nOccupied++;
if (nOccupied >= layer) break;
};
}; /* sd */
curWind = GetNextWindow(curWind);
};
if (!curWind) break;
if (initialOffset) curPos.h += is9 ? OFF_9 : offset; // docked windows we don't nudge to the right.
curPos.v += offset;
};
if (!curWind || noPos) break;
layer++;
};
SetPort_(savedPort);
// Make sure we're OK with docked windows
SetRect(&junkRect,curPos.h,curPos.v,curPos.h+windWidth,curPos.v+windHeight);
DockedWinReduce(theWindow,&junkRect,&screenRect);
SetPt(&initPos, screenRect.left + initialOffset + leftRimWidth,
screenRect.top + initialOffset + titleBarHeight);
if (initPos.h > curPos.h) curPos.h = initPos.h;
if (initPos.v > curPos.v) curPos.v = initPos.v;
*pos = curPos;
}
#if !(TARGET_RT_MAC_CFM)
/*______________________________________________________________________
CancelFilter - Command Period Dialog Filter Proc.
Entry: theDialog = pointer to dialog record.
theEvent = pointer to event record.
Exit: if command-period or escape typed:
function result = true.
itemHit = item number of cancel button.
else if user specified a filterProc on the call to
utl_StopAlert:
user's filterProc called, function result and itemHit
returned by user's filterProc.
else:
function result = false.
itemHit = undefined.
_____________________________________________________________________*/
static pascal Boolean CancelFilter (DialogPtr theDialog,
EventRecord *theEvent, short *itemHit)
{
short key; /* ascii code of key pressed */
if (theEvent->what != keyDown && theEvent->what != autoKey) {
if (Filter) {
return (*Filter)(theDialog, theEvent, itemHit);
} else {
return false;
};
} else {
key = theEvent->message & charCodeMask;
if (key == escapeKey) {
*itemHit = CancelItem;
utl_FlashButton(theDialog, CancelItem);
return true;
} else if ((theEvent->modifiers & cmdKey) &&
(key == '.')) {
*itemHit = CancelItem;
utl_FlashButton(theDialog, CancelItem);
return true;
} else if (Filter) {
return (*Filter)(theDialog, theEvent, itemHit);
} else if (key == returnKey || key==enterKey) {
*itemHit = 1;
utl_FlashButton(theDialog, 1);
return true;
} else {
return false;
};
};
}
/*______________________________________________________________________
utl_StopAlert - Present Stop Alert
Entry: alertID = resource id of alert.
filterProc = pointer to filter proc.
cancelItem = item number of cancel button, or 0 if
none.
Exit: function result = item number
This routine is identical to the Dialog Manager routine StopAlert,
except that it centers the alert on the main window, and if requested,
command/period or the Escape key is treated the same as a click on the
Cancel button.
_____________________________________________________________________*/
short utl_StopAlert (short alertID, ModalFilterProcPtr filterProc,
short cancelItem)
{
Handle h; /* handle to alert resource */
short result; /* function result */
h = GetResource_('ALRT', alertID);
HLock(h);
utl_CenterDlogRect(*(Rect**)h, false);
if (cancelItem) {
Filter = filterProc;
CancelItem = cancelItem;
result = StopAlert(alertID, CancelFilter);
} else {
result = StopAlert(alertID, filterProc);
};
HUnlock(h);
return result;
}
#endif
/*______________________________________________________________________
utl_VolIsMFS - Test for MFS volume.
Entry: vRefNum = volume reference number.
Exit: function result = true if volume is MFS.
_____________________________________________________________________*/
Boolean utl_VolIsMFS (short vRefNum)
{
HParamBlockRec vBlock; /* vol info param block */
vBlock.volumeParam.ioNamePtr = nil;
vBlock.volumeParam.ioVolIndex = 0;
vBlock.volumeParam.ioVRefNum = vRefNum;
vBlock.volumeParam.ioVSigWord = 0xd2d7; /* in case we don't have HFS */
(void) PBHGetVInfo(&vBlock, false);
return vBlock.volumeParam.ioVSigWord == 0xd2d7;
}
/*----------------------------------------------------------------------------
GetDropLocationDirectory
Given an 'alis' drop location AEDesc, return the volume reference
number and directory ID of the directory.
Entry: dropLocation = pointer to 'alis' AEDesc record.
Exit: function result = error code.
*volumeID = volume reference number.
*directoryID = directory ID.
From Apple "HFS Drag Sample" sample code.
----------------------------------------------------------------------------*/
OSErr GetDropLocationDirectory (AEDesc *dropLocation, short *volumeID,
long *directoryID)
{
OSErr err = noErr;
AEDesc targetDescriptor;
FSSpec targetLocation;
CInfoPBRec getTargetInfo;
err = AECoerceDesc(dropLocation, typeFSS, &targetDescriptor);
if (err != noErr) return err;
AEGetDescData(&targetDescriptor, &targetLocation, sizeof(FSSpec));
err = AEDisposeDesc(&targetDescriptor);
if (err != noErr) return err;
IsAlias(&targetLocation,&targetLocation);
getTargetInfo.dirInfo.ioNamePtr = targetLocation.name;
getTargetInfo.dirInfo.ioVRefNum = targetLocation.vRefNum;
getTargetInfo.dirInfo.ioFDirIndex = 0;
getTargetInfo.dirInfo.ioDrDirID = targetLocation.parID;
err = PBGetCatInfoSync(&getTargetInfo);
if (err != noErr) return err;
*directoryID = getTargetInfo.dirInfo.ioDrDirID;
*volumeID = targetLocation.vRefNum;
return noErr;
}
/*----------------------------------------------------------------------------
DragTargetWasTrash
Check to see if the target of a drag and drop was the Finder trashcan.
Entry: dragRef = drag reference.
Exit: function result = true if target was trash.
----------------------------------------------------------------------------*/
Boolean DragTargetWasTrash (DragReference dragRef)
{
AEDesc dropLocation;
OSErr err = noErr;
long dropDirID, trashDirID;
short dropVRefNum, trashVRefNum;
err = GetDropLocation(dragRef, &dropLocation);
if (err != noErr) return false;
if (dropLocation.descriptorType == typeNull) goto exit;
err = GetDropLocationDirectory(&dropLocation, &dropVRefNum, &dropDirID);
if (err != noErr) goto exit;
err = FindFolder(dropVRefNum, kTrashFolderType, false, &trashVRefNum,
&trashDirID);
if (err != noErr) goto exit;
if (dropVRefNum != trashVRefNum || dropDirID != trashDirID) goto exit;
AEDisposeDesc(&dropLocation);
return true;
exit:
AEDisposeDesc(&dropLocation);
return false;
}
Reference in New Issue View Git Blame Copy Permalink