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OpenStep 4.2J (Developer)
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AppKit
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Draw
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Graphic.m
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#import "draw.h"
@implementation Graphic : NSObject
static int KNOB_WIDTH = 0.0;
static int KNOB_HEIGHT = 0.0;
#define MINSIZE 5.0 /* minimum size of a Graphic */
NSCursor *CrossCursor = nil; /* global since subclassers may need it */
/* Optimization method. */
/*
* The fastKnobFill optimization just keeps a list of black and dark gray
* rectangles (the knobbies are made out of black and dark gray rectangles)
* and emits them in a single NSRectFillList() which is much faster than
* doing individual rectfills (we also save the repeated setgrays).
*/
static NSRect *blackRectList = NULL;
static int blackRectSize = 0;
static int blackRectCount = 0;
static NSRect *dkgrayRectList = NULL;
static int dkgrayRectSize = 0;
static int dkgrayRectCount = 0;
+ fastKnobFill:(NSRect)aRect isBlack:(BOOL)isBlack
{
if (isBlack) {
if (!blackRectList) {
blackRectSize = 16;
blackRectList = NSZoneMalloc((NSZone *)[(NSObject *)NSApp zone], (blackRectSize) * sizeof(NSRect));
} else {
while (blackRectCount >= blackRectSize) blackRectSize <<= 1;
blackRectList = NSZoneRealloc((NSZone *)[(NSObject *)NSApp zone], blackRectList, (blackRectSize) * sizeof(NSRect));
}
blackRectList[blackRectCount++] = aRect;
} else {
if (!dkgrayRectList) {
dkgrayRectSize = 16;
dkgrayRectList = NSZoneMalloc((NSZone *)[(NSObject *)NSApp zone], (dkgrayRectSize) * sizeof(NSRect));
} else {
while (dkgrayRectCount >= dkgrayRectSize) dkgrayRectSize <<= 1;
dkgrayRectList = NSZoneRealloc((NSZone *)[(NSObject *)NSApp zone], dkgrayRectList, (dkgrayRectSize) * sizeof(NSRect));
}
dkgrayRectList[dkgrayRectCount++] = aRect;
}
return self;
}
+ (void)showFastKnobFills
{
if (blackRectCount) {
PSsetgray(NSBlack);
NSRectFillList(blackRectList, blackRectCount);
}
if (dkgrayRectCount) {
PSsetgray(NSDarkGray);
NSRectFillList(dkgrayRectList, dkgrayRectCount);
}
blackRectCount = 0;
dkgrayRectCount = 0;
}
/* Factory methods. */
+ (BOOL)isEditable
/*
* Any Graphic which can be edited should return YES from this
* and its instances should do something in the response to the
* edit:in: method.
*/
{
return NO;
}
+ (NSCursor *)cursor
/*
* Any Graphic that doesn't have a special cursor gets the default cross.
*/
{
NSPoint spot;
if (!CrossCursor) {
spot.x = 7.0; spot.y = 7.0;
CrossCursor = [[NSCursor alloc] initWithImage:[NSImage imageNamed:@"Cross.tiff"] hotSpot:spot];
}
return CrossCursor;
}
+ (void)initClassVars
{
NSString *value;
float w = 2.0, h = 2.0;
if (!KNOB_WIDTH) {
value = [[NSUserDefaults standardUserDefaults] objectForKey:@"KnobWidth"];
if (value) w = floor(atof([value cString]) / 2.0);
value = [[NSUserDefaults standardUserDefaults] objectForKey:@"KnobHeight"];
if (value) h = floor(atof([value cString]) / 2.0);
w = MAX(w, 1.0); h = MAX(h, 1.0);
KNOB_WIDTH = w * 2.0 + 1.0; /* size must be odd */
KNOB_HEIGHT = h * 2.0 + 1.0;
}
}
/*
* The currentGraphicIdentifier is a number that is kept unique for a given
* Draw document by being monotonically increasing and is bumped each time a
* new Graphic is created. The method of the same name is used during the
* archiving of a Draw document to write out what the number is at save-time.
* updateCurrentGraphicIdentifer: is used at document load time to reset
* the number to that level (if it's already higher, then we don't need to
* bump it).
*/
static int currentGraphicIdentifier = 1;
+ (int)currentGraphicIdentifier
{
return currentGraphicIdentifier;
}
+ (int)nextCurrentGraphicIdentifier
{
return currentGraphicIdentifier++;
}
+ (void)updateCurrentGraphicIdentifier:(int)newMaxIdentifier
{
if (newMaxIdentifier > currentGraphicIdentifier) currentGraphicIdentifier = newMaxIdentifier;
}
- (id)init
{
[super init];
gFlags.active = YES;
gFlags.selected = YES;
[[self class] initClassVars];
identifier = currentGraphicIdentifier++;
return self;
}
/* Private C functions and macros used to implement methods in this class. */
static void drawKnobs(NSRect knob, int cornerMask, BOOL black)
/*
* Draws either the knobs or their shadows (not both).
*/
{
float dx, dy;
BOOL oddx, oddy;
dx = knob.size.width / 2.0;
dy = knob.size.height / 2.0;
oddx = (floor(dx) != dx);
oddy = (floor(dy) != dy);
knob.size.width = KNOB_WIDTH;
knob.size.height = KNOB_HEIGHT;
knob.origin.x -= ((KNOB_WIDTH - 1.0) / 2.0);
knob.origin.y -= ((KNOB_HEIGHT - 1.0) / 2.0);
if (cornerMask & LOWER_LEFT_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.y += dy;
if (oddy) knob.origin.y -= 0.5;
if (cornerMask & LEFT_SIDE_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.y += dy;
if (oddy) knob.origin.y += 0.5;
if (cornerMask & UPPER_LEFT_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.x += dx;
if (oddx) knob.origin.x -= 0.5;
if (cornerMask & TOP_SIDE_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.x += dx;
if (oddx) knob.origin.x += 0.5;
if (cornerMask & UPPER_RIGHT_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.y -= dy;
if (oddy) knob.origin.y -= 0.5;
if (cornerMask & RIGHT_SIDE_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.y -= dy;
if (oddy) knob.origin.y += 0.5;
if (cornerMask & LOWER_RIGHT_MASK) [Graphic fastKnobFill:knob isBlack:black];
knob.origin.x -= dx;
if (oddx) knob.origin.x += 0.5;
if (cornerMask & BOTTOM_SIDE_MASK) [Graphic fastKnobFill:knob isBlack:black];
}
/* Private methods sometimes overridden by subclassers */
- (void)setGraphicsState
/*
* Emits a gsave, must be balanced by grestore.
*/
{
PSSetParameters(gFlags.linecap, gFlags.linejoin, linewidth);
}
- (void)setLineColor
{
if (lineColor) {
[lineColor set];
} else {
[[NSColor blackColor] set];
}
}
- (void)setFillColor
{
if (fillColor) [fillColor set];
}
- (int)cornerMask
/*
* Returns a mask of the corners which should have a knobby in them.
*/
{
return ALL_CORNERS;
}
/* Data link methods -- see Links.rtf and gvLinks.m for more info */
/*
* Most Graphics aren't linked (i.e. their visual display is
* not determined by some other document). See Image and
* TextGraphic for examples of Graphics that sometimes do.
*/
- (void)setLink:(NSDataLink *)aLink
{
}
- (NSDataLink *)link
{
return nil;
}
- (Graphic *)graphicLinkedBy:(NSDataLink *)aLink
/*
* The reason we implement this method (instead of just relying on
* saying if ([graphic link] == aLink)) is for the sake of Group
* objects which may have a linked Graphic embedded in them.
*/
{
NSDataLink *link = [self link];
if (link) {
if (!aLink) { /* !aLink means any link */
return ([link disposition] != NSLinkBroken) ? self : nil;
} else {
return (aLink == link) ? self : nil;
}
}
return nil;
}
- (void)reviveLink:(NSDataLinkManager *)linkManager
/*
* We never archive link information (but, of course, the unique identifer
* is always archived with a Graphic). Thus, when our document is reloaded,
* we just asked the NSDataLinkManager which NSDataLink object is associated
* with the NSSelection which represents this Graphic.
*/
{
if (![self link]) [self setLink:[linkManager destinationLinkWithSelection:[self selection]]];
}
- (NSSelection *)selection
/*
* Just creates an NSSelection "bag o' bits" with our unique identifier in it.
*/
{
NSString *identstring = [NSString stringWithFormat:@"%d %d\0", ByGraphic, [self identifier]];
return [[NSSelection allocWithZone:[self zone]] initWithDescriptionData:[identstring dataUsingEncoding:NSASCIIStringEncoding]];
}
- (BOOL)mightBeLinked
/*
* This is set whenever our Graphic has a link set in it.
* It is never cleared.
* We use it during copy/paste to determine whether we have
* to check with the data link manager to possibly reestablish
* a link to this object.
*/
{
return gFlags.mightBeLinked;
}
- (void)readLinkFromPasteboard:(NSPasteboard *)pboard usingManager:(NSDataLinkManager *)linkManager useNewIdentifier:(BOOL)useNewIdentifier
/*
* This is called by pasteFromPasteboard: when we paste a Graphic (i.e. copied/pasted from
* another Draw document) in case that Graphic was linked to something when it was copied.
* Since we called writeLinksToPasteboard: when we put the Graphic into the pasteboard (see
* writeLinkToPasteboard:types: above) we can simply retrieve all the link information for
* that graphic by using the linkManager method addLinkPreviouslyAt:fromPasteboard:at:.
*/
{
NSDataLink *link;
NSSelection *oldSelection, *newSelection;
oldSelection = [self selection];
if (linkManager && oldSelection) {
if (useNewIdentifier) [self resetIdentifier];
newSelection = [self selection];
link = [linkManager addLinkPreviouslyAt:oldSelection
fromPasteboard:pboard
at:newSelection];
[self setLink:link];
}
}
/* Notification messages */
/*
* These methods are sent when a Graphic is added to or removed
* from a GraphicView (respectively). Currently we only use them
* to break and reestablish links if any.
*/
- (void)wasAddedTo:(GraphicView *)sender
{
NSDataLink *link;
NSDataLinkManager *linkManager;
if ((linkManager = [sender linkManager]) && (link = [self link])) {
if ([link disposition] == NSLinkBroken) {
[linkManager addLink:link at:[self selection]];
}
}
}
- (void)wasRemovedFrom:(GraphicView *)sender
{
[[self link] break];
}
/* Methods for uniquely identifying a Graphic. */
- (void)resetIdentifier
{
identifier = currentGraphicIdentifier++;
}
- (NSString *)identifierString
/*
* This method is necessary to support a Group which never writes out
* its own identifier, but, instead has its components each write out
* their own identifier.
*/
{
return [NSString stringWithFormat:@"%d", identifier];
}
- (int)identifier
{
return identifier;
}
- (Graphic *)graphicIdentifiedBy:(int)anIdentifier
{
return (identifier == anIdentifier) ? self : nil;
}
/* Event handling */
- (BOOL)handleEvent:(NSEvent *)event at:(NSPoint)p inView:(NSView *)view
/*
* Currently the only Graphic's that handle events are Image Graphic's that
* are linked to something else (they follow the link on double-click and
* the track the mouse for link buttons, for example). This method should
* return YES only if it tracked the mouse until it went up.
*/
{
return NO;
}
/* Public routines mostly called by GraphicView's. */
- (NSString *)title
{
return NSLocalizedString( [(NSObject *)[self class] description], nil );
}
- (BOOL)isSelected
{
return gFlags.selected;
}
- (BOOL)isActive
{
return gFlags.active;
}
- (BOOL)isCached
{
return !gFlags.notCached;
}
- (BOOL)isLocked
{
return gFlags.locked;
}
- (void)select
{
gFlags.selected = YES;
}
- (void)deselect
{
gFlags.selected = NO;
}
- (void)activate
/*
* Activation is used to *temporarily* take a Graphic out of the GraphicView.
*/
{
gFlags.active = YES;
}
- (void)deactivate
{
gFlags.active = NO;
}
- (void)lockGraphic
/*
* A locked graphic cannot be selected, resized or moved.
*/
{
gFlags.locked = YES;
}
- (void)unlockGraphic
{
gFlags.locked = NO;
}
/* See TextGraphic for more info about form entries. */
- (BOOL)isFormEntry
{
return NO;
}
- (void)setFormEntry:(int)flag
{
}
- (BOOL)hasFormEntries
{
return NO;
}
- (BOOL)writeFormEntryToMutableString:(NSMutableString *)aString;
{
return NO;
}
- (BOOL)writesFiles
{
return NO;
}
- (void)writeFilesToDirectory:(NSString *)directory
{
}
/* See Group and Image for more info about cacheability. */
- (void)setCacheable:(BOOL)flag
{
}
- (BOOL)isCacheable
{
return YES;
}
/* Getting and setting the bounds. */
- (NSRect)bounds
{
NSRect theRect;
theRect = bounds;
return theRect;
}
- (void)setBounds:(NSRect)aRect
{
bounds = aRect;
}
- (NSRect)extendedBounds
/*
* Returns, by reference, the rectangle which encloses the Graphic
* AND ITS KNOBBIES and its increased line width (if appropriate).
*/
{
NSRect returnRect;
if (bounds.size.width < 0.0) {
returnRect.origin.x = bounds.origin.x + bounds.size.width;
returnRect.size.width = - bounds.size.width;
} else {
returnRect.origin.x = bounds.origin.x;
returnRect.size.width = bounds.size.width;
}
if (bounds.size.height < 0.0) {
returnRect.origin.y = bounds.origin.y + bounds.size.height;
returnRect.size.height = - bounds.size.height;
} else {
returnRect.origin.y = bounds.origin.y;
returnRect.size.height = bounds.size.height;
}
returnRect.size.width = MAX(1.0, returnRect.size.width);
returnRect.size.height = MAX(1.0, returnRect.size.height);
returnRect = NSInsetRect(returnRect, - ((KNOB_WIDTH - 1.0) + linewidth + 1.0), - ((KNOB_HEIGHT - 1.0) + linewidth + 1.0));
if (gFlags.arrow) {
if (linewidth) {
returnRect = NSInsetRect(returnRect, - linewidth * 2.5, - linewidth * 2.5);
} else {
returnRect = NSInsetRect(returnRect, - 13.0, - 13.0);
}
}
returnRect = NSIntegralRect(returnRect);
return returnRect;
}
- (int)knobHit:(NSPoint)p
/*
* Returns 0 if point is in bounds, and Graphic isOpaque, and no knobHit.
* Returns -1 if outside bounds or not opaque or not active.
* Returns corner number if there is a hit on a corner.
* We have to be careful when the bounds are off an odd size since the
* knobs on the sides are one pixel larger.
*/
{
NSRect eb;
NSRect knob;
float dx, dy;
BOOL oddx, oddy;
int cornerMask = [self cornerMask];
eb = [self extendedBounds];
if (!gFlags.active) {
return -1;
} else if (!gFlags.selected) {
return (NSMouseInRect(p, bounds, NO) && [self isOpaque]) ? 0 : -1;
} else {
if (!NSMouseInRect(p, eb, NO)) return -1;
}
knob = bounds;
dx = knob.size.width / 2.0;
dy = knob.size.height / 2.0;
oddx = (floor(dx) != dx);
oddy = (floor(dy) != dy);
knob.size.width = KNOB_WIDTH;
knob.size.height = KNOB_HEIGHT;
knob.origin.x -= ((KNOB_WIDTH - 1.0) / 2.0);
knob.origin.y -= ((KNOB_HEIGHT - 1.0) / 2.0);
if ((cornerMask & LOWER_LEFT_MASK) && NSMouseInRect(p, knob, NO))
return(LOWER_LEFT);
knob.origin.y += dy;
if (oddy) knob.origin.y -= 0.5;
if ((cornerMask & LEFT_SIDE_MASK) && NSMouseInRect(p, knob, NO))
return(LEFT_SIDE);
knob.origin.y += dy;
if (oddy) knob.origin.y += 0.5;
if ((cornerMask & UPPER_LEFT_MASK) && NSMouseInRect(p, knob, NO))
return(UPPER_LEFT);
knob.origin.x += dx;
if (oddx) knob.origin.x -= 0.5;
if ((cornerMask & TOP_SIDE_MASK) && NSMouseInRect(p, knob, NO))
return(TOP_SIDE);
knob.origin.x += dx;
if (oddx) knob.origin.x += 0.5;
if ((cornerMask & UPPER_RIGHT_MASK) && NSMouseInRect(p, knob, NO))
return(UPPER_RIGHT);
knob.origin.y -= dy;
if (oddy) knob.origin.y -= 0.5;
if ((cornerMask & RIGHT_SIDE_MASK) && NSMouseInRect(p, knob, NO))
return(RIGHT_SIDE);
knob.origin.y -= dy;
if (oddy) knob.origin.y += 0.5;
if ((cornerMask & LOWER_RIGHT_MASK) && NSMouseInRect(p, knob, NO))
return(LOWER_RIGHT);
knob.origin.x -= dx;
if (oddx) knob.origin.x += 0.5;
if ((cornerMask & BOTTOM_SIDE_MASK) && NSMouseInRect(p, knob, NO))
return(BOTTOM_SIDE);
return NSMouseInRect(p, bounds, NO) ? ([self isOpaque] ? 0 : -1) : -1;
}
/* This method is analogous to display (not drawSelf::) in View. */
- (void)draw:(NSRect)rect
/*
* Draws the graphic inside rect. If rect is an "empty" rect, then it draws
* the entire Graphic. If the Graphic is not intersected by rect, then it
* is not drawn at all. If the Graphic is selected, it is drawn with
* its knobbies. This method is not intended to be overridden. It
* calls the overrideable method "draw" which doesn't have to worry
* about drawing the knobbies.
*
* Note the showFastKnobFills optimization here. If this Graphic is
* opaque then there is a possibility that it might obscure knobbies
* of Graphics underneath it, so we must emit the cached rectfills
* before drawing this Graphic.
*/
{
NSRect r = [self extendedBounds];
if (gFlags.active && (NSIsEmptyRect(rect) || !NSIsEmptyRect(NSIntersectionRect(rect, r)))) {
if ([self isOpaque]) [Graphic showFastKnobFills];
[self setGraphicsState]; /* does a gsave */
[self draw];
PSgrestore(); /* so we need a grestore here */
if ([[NSDPSContext currentContext] isDrawingToScreen]) {
if (gFlags.selected) {
r.origin.x = floor(bounds.origin.x);
r.origin.y = floor(bounds.origin.y);
r.size.width = floor(bounds.origin.x + bounds.size.width + 0.99) - r.origin.x;
r.size.height = floor(bounds.origin.y + bounds.size.height + 0.99) - r.origin.y;
r.origin.x += 1.0;
r.origin.y -= 1.0;
drawKnobs(r, [self cornerMask], YES); /* shadows */
r.origin.x = floor(bounds.origin.x);
r.origin.y = floor(bounds.origin.y);
r.size.width = floor(bounds.origin.x + bounds.size.width + 0.99) - r.origin.x;
r.size.height = floor(bounds.origin.y + bounds.size.height + 0.99) - r.origin.y;
drawKnobs(r, [self cornerMask], NO); /* knobs */
}
}
}
}
/*
* Returns whether this Graphic can emit, all by itself, fully
* encapsulated PostScript (or fully conforming TIFF) representing
* itself. This is an optimization for copy/paste.
*/
- (BOOL)canEmitEPS
{
return NO;
}
- (BOOL)canEmitTIFF
{
return NO;
}
/* Sizing, aligning and moving. */
- (void)moveLeftEdgeTo:(const float *)x
{
bounds.origin.x = *x;
}
- (void)moveRightEdgeTo:(const float *)x
{
bounds.origin.x = *x - bounds.size.width;
}
- (void)moveTopEdgeTo:(const float *)y
{
bounds.origin.y = *y - bounds.size.height;
}
- (void)moveBottomEdgeTo:(const float *)y
{
bounds.origin.y = *y;
}
- (void)moveHorizontalCenterTo:(const float *)x
{
bounds.origin.x = *x - floor(bounds.size.width / 2.0);
}
- (void)moveVerticalCenterTo:(const float *)y
{
bounds.origin.y = *y - floor(bounds.size.height / 2.0);
}
- (float)baseline
{
return 0.0;
}
- (void)moveBaselineTo:(const float *)y
{
}
- (void)moveBy:(const NSPoint *)offset
{
bounds.origin.x += floor(offset->x);
bounds.origin.y += floor(offset->y);
}
- (void)moveTo:(NSPoint)p
{
bounds.origin.x = floor(p.x);
bounds.origin.y = floor(p.y);
}
- (void)centerAt:(NSPoint)p
{
bounds.origin.x = floor(p.x - bounds.size.width / 2.0);
bounds.origin.y = floor(p.y - bounds.size.height / 2.0);
}
- (void)sizeTo:(const NSSize *)size
{
bounds.size.width = floor(size->width);
bounds.size.height = floor(size->height);
}
- (void)sizeToNaturalAspectRatio
{
return [self constrainCorner:UPPER_RIGHT toAspectRatio:[self naturalAspectRatio]];
}
- (void)sizeToGrid:(GraphicView *)graphicView
{
NSPoint p;
bounds.origin = [graphicView grid:bounds.origin];
p.x = bounds.origin.x + bounds.size.width;
p.y = bounds.origin.y + bounds.size.height;
p = [graphicView grid:p];
bounds.size.width = p.x - bounds.origin.x;
bounds.size.height = p.y - bounds.origin.y;
}
- (void)alignToGrid:(GraphicView *)graphicView
{
bounds.origin = [graphicView grid:bounds.origin];
}
/* Public routines. */
- (void)setLineWidth:(const float *)value
/*
* This is called with value indirected so that it can be called via
* a perform:with: method. Kind of screwy, but ...
*/
{
if (value) linewidth = *value;
}
- (float)lineWidth
{
return linewidth;
}
- (void)setLineColor:(NSColor *)color
{
if (color) {
[lineColor autorelease];
if ([color isEqual:[NSColor blackColor]]) {
lineColor = NULL;
gFlags.nooutline = NO;
} else {
lineColor = [color copyWithZone:(NSZone *)[self zone]];
gFlags.nooutline = NO;
}
}
}
- (NSColor *)lineColor
{
return lineColor ? lineColor : [NSColor blackColor];
}
- (void)setFillColor:(NSColor *)color
{
if (color) {
[fillColor autorelease];
fillColor = [color copyWithZone:(NSZone *)[self zone]];
if (![self fill]) [self setFill:FILL_NZWR];
}
}
- (NSColor *)fillColor
{
return fillColor ? fillColor : [NSColor whiteColor];
}
- (Graphic *)colorAcceptorAt:(NSPoint)point
/*
* This method supports dragging and dropping colors on Graphics.
* Whatever object is returned from this may well be sent
* setFillColor: if the color actually gets dropped on it.
* See gvDrag.m's acceptsColor:atPoint: method.
*/
{
return nil;
}
- (void)changeFont:(id)sender
{
}
- (NSFont *)font
{
return nil;
}
- (void)setGray:(const float *)value
/*
* This is called with value indirected so that it can be called via
* a perform:with: method. Kind of screwy, but ...
* Now that we have converted to using NSColor's, we'll interpret this
* method as a request to set the lineColor.
*/
{
if (value) [self setLineColor:[NSColor colorWithCalibratedWhite:*value alpha:1.0]];
}
- (float)gray
{
float retval;
if (lineColor) {
[[lineColor colorUsingColorSpaceName:NSCalibratedWhiteColorSpace] getWhite:&retval alpha:NULL];
} else {
retval = NSBlack;
}
return retval;
}
- (void)setFill:(int)mode
{
switch (mode) {
case FILL_NONE: gFlags.eofill = gFlags.fill = NO; break;
case FILL_EO: gFlags.eofill = YES; gFlags.fill = NO; break;
case FILL_NZWR: gFlags.eofill = NO; gFlags.fill = YES; break;
}
}
- (int)fill
{
if (gFlags.eofill) {
return FILL_EO;
} else if (gFlags.fill) {
return FILL_NZWR;
} else {
return FILL_NONE;
}
}
- (void)setOutlined:(BOOL)outlinedFlag
{
gFlags.nooutline = outlinedFlag ? NO : YES;
}
- (BOOL)isOutlined
{
return gFlags.nooutline ? NO : YES;
}
- (void)setLineCap:(int)capValue
{
if (capValue >= 0 && capValue <= 2) {
gFlags.linecap = capValue;
}
}
- (int)lineCap
{
return gFlags.linecap;
}
- (void)setLineArrow:(int)arrowValue
{
if (arrowValue >= 0 && arrowValue <= 3) {
gFlags.arrow = arrowValue;
}
}
- (int)lineArrow
{
return gFlags.arrow;
}
- (void)setLineJoin:(int)joinValue
{
if (joinValue >= 0 && joinValue <= 2) {
gFlags.linejoin = joinValue;
}
}
- (int)lineJoin
{
return gFlags.linejoin;
}
/* Archiving methods. */
#define FILLED_KEY @"Filled"
#define ARROW_AT_END_KEY @"ArrowAtEnd"
#define ARROW_AT_START_KEY @"ArrowAtStart"
#define EVEN_ODD_KEY @"EvenOddRule"
- (void)convertSelf:(ConversionDirection)direction propertyList:(id)plist
{
if ((direction == FromPropertyList) || linewidth) PL_FLOAT(plist, linewidth, @"LineWidth", direction);
if ((direction == FromPropertyList) || lineColor) PL_COLOR(plist, lineColor, @"LineColor", direction, [self zone]);
if ((direction == FromPropertyList) || fillColor) PL_COLOR(plist, fillColor, @"FillColor", direction, [self zone]);
PL_RECT(plist, bounds, @"Bounds", direction);
PL_INT(plist, identifier, @"Identifier", direction);
PL_FLAG(plist, gFlags.localizeFormEntry, @"LocalizeFormEntry", direction);
PL_FLAG(plist, gFlags.isFormEntry, @"IsFormEntry", direction);
PL_FLAG(plist, gFlags.nooutline, @"NoOutline", direction);
if (direction == ToPropertyList) {
if (gFlags.arrow & ARROW_AT_END) [plist setObject:@"YES" forKey:ARROW_AT_END_KEY];
if (gFlags.arrow & ARROW_AT_START) [plist setObject:@"YES" forKey:ARROW_AT_START_KEY];
} else {
if ([plist objectForKey:ARROW_AT_END_KEY]) gFlags.arrow |= ARROW_AT_END;
if ([plist objectForKey:ARROW_AT_START_KEY]) gFlags.arrow |= ARROW_AT_START;
}
PL_FLAG(plist, gFlags.locked, @"Locked", direction);
if (direction == ToPropertyList) {
if (gFlags.fill || gFlags.eofill)
[plist setObject:(gFlags.fill ? @"Non-ZeroWindingRule" : EVEN_ODD_KEY) forKey:FILLED_KEY];
} else {
if ([[plist objectForKey:FILLED_KEY] isEqual:EVEN_ODD_KEY]) {
gFlags.eofill = YES;
} else if ([plist objectForKey:FILLED_KEY]) {
gFlags.fill = YES;
}
}
PL_INT(plist, gFlags.linecap, @"LineCap", direction);
PL_INT(plist, gFlags.linejoin, @"LineJoin", direction);
PL_FLAG(plist, gFlags.initialized, @"Initialized", direction);
PL_FLAG(plist, gFlags.downhill, @"LineGoesDownhill", direction);
PL_FLAG(plist, gFlags.selected, @"Selected", direction);
}
- (id)propertyList
{
NSMutableDictionary *plist = [NSMutableDictionary dictionaryWithCapacity:10];
[plist setObject:NSStringFromClass([self class]) forKey:@"Class"];
[self convertSelf:ToPropertyList propertyList:plist];
return plist;
}
- initFromPropertyList:(id)plist inDirectory:(NSString *)directory;
{
[self convertSelf:FromPropertyList propertyList:plist];
gFlags.active = YES;
if (identifier >= currentGraphicIdentifier) currentGraphicIdentifier = identifier+1;
[[self class] initClassVars];
return self;
}
- (NSString *)description
{
return [(NSObject *)[self propertyList] description];
}
/* Routines which may need subclassing for different Graphic types. */
- (BOOL)constrainByDefault
{
return NO;
}
- (void)constrainCorner:(int)corner toAspectRatio:(float)aspect
/*
* Modifies the bounds rectangle by moving the specified corner so that
* the Graphic maintains the specified aspect ratio. This is used during
* constrained resizing. Can be overridden if the aspect ratio is not
* sufficient to constrain resizing.
*/
{
int newcorner;
float actualAspect;
if (!bounds.size.height || !bounds.size.width || !aspect) return;
actualAspect = bounds.size.width / bounds.size.height;
if (actualAspect == aspect) return;
switch (corner) {
case LEFT_SIDE:
bounds.origin.x -= bounds.size.height * aspect- bounds.size.width;
case RIGHT_SIDE:
bounds.size.width = bounds.size.height * aspect;
if (bounds.size.width) bounds = NSIntegralRect(bounds);
return;
case BOTTOM_SIDE:
bounds.origin.y -= bounds.size.width / aspect- bounds.size.height;
case TOP_SIDE:
bounds.size.height = bounds.size.width / aspect;
if (bounds.size.height) bounds = NSIntegralRect(bounds);
return;
case LOWER_LEFT:
corner = 0;
case 0:
case UPPER_RIGHT:
case UPPER_LEFT:
case LOWER_RIGHT:
if (actualAspect > aspect) {
newcorner = ((corner|KNOB_DY_ONCE)&(~(KNOB_DY_TWICE)));
} else {
newcorner = ((corner|KNOB_DX_ONCE)&(~(KNOB_DX_TWICE)));
}
return [self constrainCorner:newcorner toAspectRatio:aspect];
default:
return;
}
}
#define RESIZE_MASK (NSLeftMouseUpMask|NSLeftMouseDraggedMask|NSPeriodicMask)
- (void)resize:(NSEvent *)event by:(int)corner in:(GraphicView *)view
/*
* Resizes the graphic by the specified corner. If corner == CREATE,
* then it is resized by the UPPER_RIGHT corner, but the initial size
* is reset to 1 by 1.
*/
{
NSPoint p, last;
float aspect = 0.0;
NSWindow *window = [view window];
BOOL constrain, canScroll, temporarilyAddedToGraphicsList = NO;
DrawStatusType oldDrawStatus;
NSRect eb, starteb, visibleRect;
if (!gFlags.active || !gFlags.selected || !corner) return;
constrain = (([event modifierFlags] & NSAlternateKeyMask) &&
((bounds.size.width && bounds.size.height) || corner == CREATE));
if ([self constrainByDefault]) constrain = !constrain;
if (constrain) aspect = bounds.size.width / bounds.size.height;
if (corner == CREATE) {
bounds.size.width = bounds.size.height = 1.0;
corner = UPPER_RIGHT;
}
gFlags.selected = NO;
starteb = eb = [self extendedBounds];
if (![[view graphics] containsObject:self]) {
[[view graphics] addObject:self];
temporarilyAddedToGraphicsList = YES;
}
gFlags.notCached = YES;
gFlags.active = NO;
[view cache:eb andUpdateLinks:NO];
gFlags.active = YES;
oldDrawStatus = DrawStatus;
DrawStatus = Resizing;
visibleRect = [view visibleRect];
canScroll = !NSEqualRects(visibleRect, bounds);
if (canScroll) [NSEvent startPeriodicEventsAfterDelay:0.1 withPeriod:0.1];
last.x = last.y = - 1.0;
while ([event type] != NSLeftMouseUp) {
p = [event locationInWindow]; // save for periodicEventWithLocationSetToPoint()
event = [window nextEventMatchingMask:RESIZE_MASK];
if ([event type] == NSPeriodic) event = periodicEventWithLocationSetToPoint(event, p);
p = [event locationInWindow];
p = [view convertPoint:p fromView:nil];
p = [view grid:p];
if (p.x != last.x || p.y != last.y) {
corner = [self moveCorner:corner to:p constrain:constrain];
if (constrain) [self constrainCorner:corner toAspectRatio:aspect];
if (canScroll) {
[view scrollPointToVisible:p]; // actually we want to keep the "edges" of the
// Graphic being resized that were visible when
// the resize started visible throughout the
// resizing time (this will be difficult if those
// edges flip from being the left edge to the
// right edge in the middle of the resize!).
}
[view setNeedsDisplayInRect:eb]; // post redraw for the old bounds
eb = [self extendedBounds];
[view setNeedsDisplayInRect:eb]; // and for the new bounds
[view tryToPerform:@selector(updateRulers:) with:(void *)&bounds];
last = p;
}
}
if (canScroll) [NSEvent stopPeriodicEvents];
DrawStatus = oldDrawStatus;
gFlags.selected = YES;
gFlags.notCached = NO;
if (temporarilyAddedToGraphicsList) {
[[view graphics] removeObject:self];
} else {
[view cache:eb andUpdateLinks:NO]; // recache after resizing a Graphic
}
[view updateTrackedLinks:NSUnionRect(eb, starteb)]; // update links
[view tryToPerform:@selector(updateRulers:) with:nil]; // clear rulers
}
- (BOOL)create:(NSEvent *)event in:(GraphicView *)view
/*
* This method rarely needs to be subclassed.
* It sets up an initial bounds, and calls resize:by:in:.
*/
{
BOOL valid;
float gridSpacing;
bounds.origin = [event locationInWindow];
bounds.origin = [view convertPoint:bounds.origin fromView:nil];
bounds.origin = [view grid:bounds.origin];
gridSpacing = (float)[view gridSpacing];
bounds.size.height = gridSpacing;
bounds.size.width = gridSpacing * [self naturalAspectRatio];
[self resize:event by:CREATE in:view];
valid = [self isValid];
if (valid) {
gFlags.selected = YES;
gFlags.active = YES;
} else {
gFlags.selected = NO;
gFlags.active = NO;
[view display];
}
return valid;
}
- (BOOL)hit:(NSPoint)p
{
return (!gFlags.locked && gFlags.active && NSMouseInRect(p, bounds, NO));
}
- (BOOL)isOpaque
{
return [self fill] ? YES : NO;
}
- (BOOL)isValid
/*
* Called after a Graphic is created to see if it is valid (this usually
* means "is it big enough?").
*/
{
return (bounds.size.width > MINSIZE && bounds.size.height > MINSIZE);
}
- (float)naturalAspectRatio
/*
* A natural aspect ratio of zero means it doesn't have a natural aspect ratio.
*/
{
return 0.0;
}
- (int)moveCorner:(int)corner to:(NSPoint)p constrain:(BOOL)flag
/*
* Moves the specified corner to the specified point.
* Returns the position of the corner after it was moved.
*/
{
int newcorner = corner;
if ((corner & KNOB_DX_ONCE) && (corner & KNOB_DX_TWICE)) {
bounds.size.width += p.x - (bounds.origin.x + bounds.size.width);
if (bounds.size.width <= 0.0) {
newcorner &= ~ (KNOB_DX_ONCE | KNOB_DX_TWICE);
bounds.origin.x += bounds.size.width;
bounds.size.width = - bounds.size.width;
}
} else if (!(corner & KNOB_DX_ONCE)) {
bounds.size.width += bounds.origin.x - p.x;
bounds.origin.x = p.x;
if (bounds.size.width <= 0.0) {
newcorner |= KNOB_DX_ONCE | KNOB_DX_TWICE;
bounds.origin.x += bounds.size.width;
bounds.size.width = - bounds.size.width;
}
}
if ((corner & KNOB_DY_ONCE) && (corner & KNOB_DY_TWICE)) {
bounds.size.height += p.y - (bounds.origin.y + bounds.size.height);
if (bounds.size.height <= 0.0) {
newcorner &= ~ (KNOB_DY_ONCE | KNOB_DY_TWICE);
bounds.origin.y += bounds.size.height;
bounds.size.height = - bounds.size.height;
}
} else if (!(corner & KNOB_DY_ONCE)) {
bounds.size.height += bounds.origin.y - p.y;
bounds.origin.y = p.y;
if (bounds.size.height <= 0.0) {
newcorner |= KNOB_DY_ONCE | KNOB_DY_TWICE;
bounds.origin.y += bounds.size.height;
bounds.size.height = - bounds.size.height;
}
}
if (newcorner != LOWER_LEFT) newcorner &= 0xf;
if (!newcorner) newcorner = LOWER_LEFT;
return newcorner;
}
- (void)unitDraw
/*
* If a Graphic just wants to draw itself in the bounding box of
* {{0.0,0.0},{1.0,1.0}}, it can simply override this method.
* Everything else will work fine.
*/
{
}
- draw
/*
* Almost all Graphics need to override this method.
* It does the Graphic-specific drawing.
* By default, it scales the coordinate system and calls unitDraw.
*/
{
if (bounds.size.width >= 1.0 && bounds.size.height >= 1.0) {
PStranslate(bounds.origin.x, bounds.origin.y);
PSscale(bounds.size.width, bounds.size.height);
[self unitDraw];
}
return self;
}
- (BOOL)edit:(NSEvent *)event in:(NSView *)view
/*
* Any Graphic which has editable text should override this method
* to edit that text. TextGraphic is an example.
*/
{
return NO;
}
@end