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libs-gui/Source/NSView.m
Richard Frith-MacDonald e514763173 Applied view resizing patches. 
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@8345 72102866-910b-0410-8b05-ffd578937521
2000-12-18 10:52:46 +00:00

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/*
NSView.m
The view class which encapsulates all drawing functionality
Copyright (C) 1996 Free Software Foundation, Inc.
Author: Scott Christley <scottc@net-community.com>
Date: 1996
Author: Ovidiu Predescu <ovidiu@net-community.com>.
Date: 1997
Author: Felipe A. Rodriguez <far@ix.netcom.com>
Date: August 1998
Author: Richard Frith-Macdonald <richard@brainstorm.co.uk>
Date: January 1999
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <gnustep/gui/config.h>
#include <math.h>
#include <float.h>
#include <Foundation/NSString.h>
#include <Foundation/NSCoder.h>
#include <Foundation/NSDictionary.h>
#include <Foundation/NSThread.h>
#include <Foundation/NSLock.h>
#include <Foundation/NSArray.h>
#include <Foundation/NSNotification.h>
#include <Foundation/NSValue.h>
#include <Foundation/NSData.h>
#include <Foundation/NSDebug.h>
#include <AppKit/NSView.h>
#include <AppKit/NSWindow.h>
#include <AppKit/GSTrackingRect.h>
#include <AppKit/GSWraps.h>
#include <AppKit/PSOperators.h>
#include <AppKit/NSAffineTransform.h>
#include <AppKit/NSScrollView.h>
#include <AppKit/NSClipView.h>
#include <AppKit/NSPasteboard.h>
#include <AppKit/NSPrintInfo.h>
#include <AppKit/NSPrintOperation.h>
struct NSWindow_struct
{
@defs(NSWindow)
};
@implementation NSView
/*
* Class variables
*/
static Class rectClass;
static Class viewClass;
static NSAffineTransform *flip = nil;
static SEL appSel;
static SEL invalidateSel;
static void (*appImp)(NSAffineTransform*, SEL, NSAffineTransform*);
static void (*invalidateImp)(NSView*, SEL);
/*
* Stuff to maintain a map table so we know what views are
* registered for drag and drop - we don't store the info in
* the view directly 'cot it would take up a pointer in each
* view and the vast majority of views wouldn't use it.
* Types are not registered/unregistered often enough for the
* performance of this mechanism to be an issue.
*/
static NSMapTable *typesMap = 0;
static NSLock *typesLock = nil;
/*
* This is the only external interface to the drag types info.
*/
NSArray*
GSGetDragTypes(NSView *obj)
{
NSArray *t;
[typesLock lock];
t = (NSArray*)NSMapGet(typesMap, (void*)(gsaddr)obj);
[typesLock unlock];
return t;
}
static void
GSRemoveDragTypes(NSView* obj)
{
[typesLock lock];
NSMapRemove(typesMap, (void*)(gsaddr)obj);
[typesLock unlock];
}
static NSArray*
GSSetDragTypes(NSView* obj, NSArray *types)
{
unsigned count = [types count];
NSString *strings[count];
NSArray *t;
unsigned i;
/*
* Make a new array with copies of the type strings so we don't get
* them mutated by someone else.
*/
[types getObjects: strings];
for (i = 0; i < count; i++)
{
strings[i] = [strings[i] copy];
}
t = [NSArray arrayWithObjects: strings count: count];
for (i = 0; i < count; i++)
{
RELEASE(strings[i]);
}
/*
* Store it.
*/
[typesLock lock];
NSMapInsert(typesMap, (void*)(gsaddr)obj, (void*)(gsaddr)t);
[typesLock unlock];
return t;
}
/*
* Class methods
*/
+ (void) initialize
{
if (self == [NSView class])
{
Class matrixClass = [NSAffineTransform class];
NSAffineTransformStruct ats = { 1, 0, 0, -1, 0, 1 };
typesMap = NSCreateMapTable(NSNonOwnedPointerMapKeyCallBacks,
NSObjectMapValueCallBacks, 0);
typesLock = [NSLock new];
appSel = @selector(appendTransform:);
invalidateSel = @selector(_invalidateCoordinates);
appImp = (void (*)(NSAffineTransform*, SEL, NSAffineTransform*))
[matrixClass instanceMethodForSelector: appSel];
invalidateImp = (void (*)(NSView*, SEL))
[self instanceMethodForSelector: invalidateSel];
flip = [matrixClass new];
[flip setTransformStruct: ats];
viewClass = [NSView class];
rectClass = [GSTrackingRect class];
NSDebugLLog(@"NSView", @"Initialize NSView class\n");
[self setVersion: 1];
}
}
/*
* return the view at the top of graphics contexts stack
* or nil if none is focused
*/
+ (NSView*) focusView
{
return [GSCurrentContext() focusView];
}
/*
* Instance methods
*/
- (id) init
{
return [self initWithFrame: NSZeroRect];
}
- (id) initWithFrame: (NSRect)frameRect
{
[super init];
if (frameRect.size.width < 0)
{
NSWarnMLog(@"given negative width", 0);
frameRect.size.width = 0;
}
if (frameRect.size.height < 0)
{
NSWarnMLog(@"given negative height", 0);
frameRect.size.height = 0;
}
_frame = frameRect; // Set frame rectangle
_bounds.origin = NSZeroPoint; // Set bounds rectangle
_bounds.size = _frame.size;
_frameMatrix = [NSAffineTransform new]; // Map fromsuperview to frame
_boundsMatrix = [NSAffineTransform new]; // Map fromsuperview to bounds
_matrixToWindow = [NSAffineTransform new]; // Map to window coordinates
_matrixFromWindow = [NSAffineTransform new]; // Map from window coordinates
[_frameMatrix setFrameOrigin: _frame.origin];
_sub_views = [NSMutableArray new];
_tracking_rects = [NSMutableArray new];
_cursor_rects = [NSMutableArray new];
_super_view = nil;
_window = nil;
_is_rotated_from_base = NO;
_is_rotated_or_scaled_from_base = NO;
_rFlags.needs_display = YES;
_post_frame_changes = NO;
_autoresizes_subviews = YES;
_autoresizingMask = NSViewNotSizable;
_coordinates_valid = NO;
_nextKeyView = nil;
_previousKeyView = nil;
_rFlags.flipped_view = [self isFlipped];
return self;
}
- (void) dealloc
{
if (_nextKeyView)
[_nextKeyView setPreviousKeyView: nil];
if (_previousKeyView)
[_previousKeyView setNextKeyView: nil];
RELEASE(_matrixToWindow);
RELEASE(_matrixFromWindow);
RELEASE(_frameMatrix);
RELEASE(_boundsMatrix);
TEST_RELEASE(_sub_views);
TEST_RELEASE(_tracking_rects);
TEST_RELEASE(_cursor_rects);
[self unregisterDraggedTypes];
[self releaseGState];
[super dealloc];
}
- (void) addSubview: (NSView*)aView
{
if ([self isDescendantOf: aView])
{
NSLog(@"Operation addSubview: creates a loop in the views tree!\n");
return;
}
RETAIN(aView);
[aView removeFromSuperview];
if (aView->_coordinates_valid)
{
(*invalidateImp)(aView, invalidateSel);
}
[aView viewWillMoveToWindow: _window];
[aView viewWillMoveToSuperview: self];
[aView setNextResponder: self];
[_sub_views addObject: aView];
_rFlags.has_subviews = 1;
[aView resetCursorRects];
[aView setNeedsDisplay: YES];
RELEASE(aView);
}
- (void) addSubview: (NSView*)aView
positioned: (NSWindowOrderingMode)place
relativeTo: (NSView*)otherView
{
unsigned index;
if ([self isDescendantOf: aView])
{
NSLog(@"addSubview: positioned: relativeTo: will create a cycle "
@"in the views tree!\n");
return;
}
if (aView == otherView)
return;
index = [_sub_views indexOfObjectIdenticalTo: otherView];
if (index == NSNotFound)
{
if (place == NSWindowBelow)
index = 0;
else
index = [_sub_views count];
}
RETAIN(aView);
[aView removeFromSuperview];
if (aView->_coordinates_valid)
{
(*invalidateImp)(aView, invalidateSel);
}
[aView viewWillMoveToWindow: _window];
[aView viewWillMoveToSuperview: self];
[aView setNextResponder: self];
if (place == NSWindowBelow)
[_sub_views insertObject: aView atIndex: index];
else
[_sub_views insertObject: aView atIndex: index+1];
_rFlags.has_subviews = 1;
[aView resetCursorRects];
[aView setNeedsDisplay: YES];
RELEASE(aView);
}
- (NSView*) ancestorSharedWithView: (NSView*)aView
{
if (self == aView)
return self;
if ([self isDescendantOf: aView])
return aView;
if ([aView isDescendantOf: self])
return self;
/*
* If neither are descendants of each other and either does not have a
* superview then they cannot have a common ancestor
*/
if (!_super_view)
return nil;
if (![aView superview])
return nil;
/* Find the common ancestor of superviews */
return [_super_view ancestorSharedWithView: [aView superview]];
}
- (BOOL) isDescendantOf: (NSView*)aView
{
if (aView == self)
return YES;
if (!_super_view)
return NO;
if (_super_view == aView)
return YES;
return [_super_view isDescendantOf: aView];
}
- (NSView*) opaqueAncestor
{
NSView *next = _super_view;
NSView *current = self;
while (next != nil)
{
if ([current isOpaque] == YES)
{
break;
}
current = next;
next = current->_super_view;
}
return current;
}
- (void) removeFromSuperviewWithoutNeedingDisplay
{
if (_super_view != nil)
{
[_super_view removeSubview: self];
}
}
- (void) removeFromSuperview
{
if (_super_view != nil)
{
[_super_view setNeedsDisplayInRect: _frame];
[_super_view removeSubview: self];
}
}
- (void) removeSubview: (NSView*)aSubview
{
id view;
/*
* This must be first because it invokes -resignFirstResponder:,
* which assumes the view is still in the view hierarchy
*/
for (view = [_window firstResponder];
view != nil && [view respondsToSelector:@selector(superview)];
view = [view superview] )
{
if (view == aSubview)
{
[_window makeFirstResponder: _window];
break;
}
}
aSubview->_super_view = nil;
[aSubview viewWillMoveToWindow: nil];
[_sub_views removeObjectIdenticalTo: aSubview];
if ([_sub_views count] == 0)
{
_rFlags.has_subviews = 0;
}
}
- (void) replaceSubview: (NSView*)oldView with: (NSView*)newView
{
if (newView == oldView)
{
return;
}
/*
* NB. we implement the replacement in full rather than calling addSubview:
* since classes like NSBox override these methods but expect to be able to
* call [super replaceSubview:with:] safely.
*/
if (oldView == nil)
{
/*
* Strictly speaking, the docs say that if 'oldView' is not a subview
* of the receiver then we do nothing - but here we add newView anyway.
* So a replacement with no oldView is an addition.
*/
RETAIN(newView);
[newView removeFromSuperview];
if (newView->_coordinates_valid)
{
(*invalidateImp)(newView, invalidateSel);
}
[newView viewWillMoveToWindow: _window];
[newView viewWillMoveToSuperview: self];
[newView setNextResponder: self];
[_sub_views addObject: newView];
_rFlags.has_subviews = 1;
[newView resetCursorRects];
[newView setNeedsDisplay: YES];
RELEASE(newView);
}
else if ([_sub_views indexOfObjectIdenticalTo: oldView] != NSNotFound)
{
if (newView == nil)
{
/*
* If there is no new view to add - we just remove the old one.
* So a replacement with no newView is a removal.
*/
[oldView removeFromSuperview];
}
else
{
unsigned index;
/*
* Ok - the standard case - we remove the newView from wherever it
* was (which may have been in this view), locate the position of
* the oldView (which may have changed due to the removal of the
* newView), remove the oldView, and insert the newView in it's
* place.
*/
RETAIN(newView);
[newView removeFromSuperview];
if (newView->_coordinates_valid)
{
(*invalidateImp)(newView, invalidateSel);
}
index = [_sub_views indexOfObjectIdenticalTo: oldView];
[oldView removeFromSuperview];
[newView viewWillMoveToWindow: _window];
[newView viewWillMoveToSuperview: self];
[newView setNextResponder: self];
[_sub_views addObject: newView];
_rFlags.has_subviews = 1;
[newView resetCursorRects];
[newView setNeedsDisplay: YES];
RELEASE(newView);
}
}
}
- (void) sortSubviewsUsingFunction: (int (*)(id ,id ,void*))compare
context: (void*)context
{
[_sub_views sortUsingFunction: compare context: context];
}
- (void) viewWillMoveToSuperview: (NSView*)newSuper
{
_super_view = newSuper;
}
/*
* NOTE - this method is used when removing a view from a window
* (in which case, newWindow is nil) to let all the subviews know
* that they have also been removed from the window.
*/
- (void) viewWillMoveToWindow: (NSWindow*)newWindow
{
if (newWindow == _window)
{
return;
}
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
if (_rFlags.has_currects != 0)
{
[self discardCursorRects];
}
if (_rFlags.has_draginfo)
{
NSGraphicsContext *ctxt = GSCurrentContext();
NSArray *t = GSGetDragTypes(self);
if (_window != nil)
{
[ctxt _removeDragTypes: t fromWindow: _window];
}
if (newWindow != nil)
{
[ctxt _addDragTypes: t toWindow: newWindow];
}
}
_window = newWindow;
if (_rFlags.has_subviews)
{
unsigned count = [_sub_views count];
if (count > 0)
{
unsigned i;
NSView *array[count];
[_sub_views getObjects: array];
for (i = 0; i < count; ++i)
{
[array[i] viewWillMoveToWindow: newWindow];
}
}
}
}
- (void) rotateByAngle: (float)angle
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[_boundsMatrix rotateByAngle: angle];
_is_rotated_from_base = _is_rotated_or_scaled_from_base = YES;
if (_post_bounds_changes)
{
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
}
- (void) _updateBoundsMatrix
{
float sx;
float sy;
if (_bounds.size.width == 0)
{
if (_frame.size.width == 0)
sx = 1;
else
sx = FLT_MAX;
}
else
{
sx = _frame.size.width / _bounds.size.width;
}
if (_bounds.size.height == 0)
{
if (_frame.size.height == 0)
sy = 1;
else
sy = FLT_MAX;
}
else
{
sy = _frame.size.height / _bounds.size.height;
}
[_boundsMatrix scaleTo: sx : sy];
if (sx != 1 || sy != 1)
_is_rotated_or_scaled_from_base = YES;
}
- (void) setFrame: (NSRect)frameRect
{
BOOL changedOrigin = NO;
BOOL changedSize = NO;
NSSize old_size = _frame.size;
if (frameRect.size.width < 0)
{
NSWarnMLog(@"given negative width", 0);
frameRect.size.width = 0;
}
if (frameRect.size.height < 0)
{
NSWarnMLog(@"given negative height", 0);
frameRect.size.height = 0;
}
if (NSMinX(_frame) != NSMinX(frameRect)
|| NSMinY(_frame) != NSMinY(frameRect))
changedOrigin = YES;
if (NSWidth(_frame) != NSWidth(frameRect)
|| NSHeight(_frame) != NSHeight(frameRect))
changedSize = YES;
_frame = frameRect;
_bounds.size = _frame.size;
if (changedOrigin)
[_frameMatrix setFrameOrigin: _frame.origin];
if (changedSize && _is_rotated_or_scaled_from_base)
{
[self _updateBoundsMatrix];
}
if (changedSize || changedOrigin)
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[self resizeSubviewsWithOldSize: old_size];
if (_post_frame_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewFrameDidChangeNotification
object: self];
}
}
- (void) setFrameOrigin: (NSPoint)newOrigin
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
_frame.origin = newOrigin;
[_frameMatrix setFrameOrigin: _frame.origin];
if (_post_frame_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewFrameDidChangeNotification
object: self];
}
- (void) setFrameSize: (NSSize)newSize
{
NSSize old_size = _frame.size;
if (newSize.width < 0)
{
NSWarnMLog(@"given negative width", 0);
newSize.width = 0;
}
if (newSize.height < 0)
{
NSWarnMLog(@"given negative height", 0);
newSize.height = 0;
}
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
if (_is_rotated_or_scaled_from_base)
{
float sx = _bounds.size.width / _frame.size.width;
float sy = _bounds.size.height / _frame.size.height;
_frame.size = newSize;
_bounds.size.width = _frame.size.width * sx;
_bounds.size.height = _frame.size.height * sy;
}
else
_frame.size = _bounds.size = newSize;
[self resizeSubviewsWithOldSize: old_size];
if (_post_frame_changes)
{
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewFrameDidChangeNotification
object: self];
}
}
- (void) setFrameRotation: (float)angle
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[_frameMatrix setFrameRotation: angle];
_is_rotated_from_base = _is_rotated_or_scaled_from_base = YES;
if (_post_frame_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewFrameDidChangeNotification
object: self];
}
- (BOOL) isRotatedFromBase
{
if (_is_rotated_from_base)
return _is_rotated_from_base;
else if (_super_view)
return [_super_view isRotatedFromBase];
else
return NO;
}
- (BOOL) isRotatedOrScaledFromBase
{
if (_is_rotated_or_scaled_from_base)
return _is_rotated_or_scaled_from_base;
else if (_super_view)
return [_super_view isRotatedOrScaledFromBase];
else
return NO;
}
- (void) scaleUnitSquareToSize: (NSSize)newSize
{
if (newSize.width < 0)
{
NSWarnMLog(@"given negative width", 0);
newSize.width = 0;
}
if (newSize.height < 0)
{
NSWarnMLog(@"given negative height", 0);
newSize.height = 0;
}
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
_bounds.size.width = _bounds.size.width / newSize.width;
_bounds.size.height = _bounds.size.height / newSize.height;
_is_rotated_or_scaled_from_base = YES;
[self _updateBoundsMatrix];
if (_post_bounds_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
- (void) setBounds: (NSRect)aRect
{
if (aRect.size.width < 0)
{
NSWarnMLog(@"given negative width", 0);
aRect.size.width = 0;
}
if (aRect.size.height < 0)
{
NSWarnMLog(@"given negative height", 0);
aRect.size.height = 0;
}
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
_bounds = aRect;
[_boundsMatrix
setFrameOrigin: NSMakePoint(-_bounds.origin.x,-_bounds.origin.y)];
[self _updateBoundsMatrix];
if (_post_bounds_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
- (void) setBoundsOrigin: (NSPoint)newOrigin
{
_bounds.origin = newOrigin;
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[_boundsMatrix setFrameOrigin: NSMakePoint(-newOrigin.x, -newOrigin.y)];
if (_post_bounds_changes)
{
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
}
- (void) setBoundsSize: (NSSize)newSize
{
if (newSize.width < 0)
{
NSWarnMLog(@"given negative width", 0);
newSize.width = 0;
}
if (newSize.height < 0)
{
NSWarnMLog(@"given negative height", 0);
newSize.height = 0;
}
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
_bounds.size = newSize;
[self _updateBoundsMatrix];
if (_post_bounds_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
- (void) setBoundsRotation: (float)angle
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[_boundsMatrix setFrameRotation: angle];
_is_rotated_from_base = _is_rotated_or_scaled_from_base = YES;
if (_post_bounds_changes)
{
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
}
- (void) translateOriginToPoint: (NSPoint)point
{
if (_coordinates_valid)
{
(*invalidateImp)(self, invalidateSel);
}
[_boundsMatrix translateToPoint: point];
if (_post_bounds_changes)
[[NSNotificationCenter defaultCenter]
postNotificationName: NSViewBoundsDidChangeNotification
object: self];
}
- (NSRect) centerScanRect: (NSRect)aRect
{
NSAffineTransform *matrix;
/*
* Hmm - we assume that the windows coordinate system is centered on the
* pixels of the screen - this may not be correct of course.
* Plus - this is all pretty meaningless is we are not in a window!
*/
matrix = [self _matrixToWindow];
aRect.origin = [matrix pointInMatrixSpace: aRect.origin];
aRect.size = [matrix sizeInMatrixSpace: aRect.size];
aRect.origin.x = floor(aRect.origin.x);
aRect.origin.y = floor(aRect.origin.y);
aRect.size.width = floor(aRect.size.width);
aRect.size.height = floor(aRect.size.height);
matrix = [self _matrixFromWindow];
aRect.origin = [matrix pointInMatrixSpace: aRect.origin];
aRect.size = [matrix sizeInMatrixSpace: aRect.size];
return aRect;
}
- (NSPoint) convertPoint: (NSPoint)aPoint fromView: (NSView*)aView
{
NSPoint new;
NSAffineTransform *matrix;
if (!aView)
aView = [[_window contentView] superview];
if (aView == self || aView == nil)
return aPoint;
NSAssert(_window == [aView window], NSInvalidArgumentException);
matrix = [aView _matrixToWindow];
new = [matrix pointInMatrixSpace: aPoint];
if (_coordinates_valid)
{
matrix = _matrixFromWindow;
}
else
{
matrix = [self _matrixFromWindow];
}
new = [matrix pointInMatrixSpace: new];
return new;
}
- (NSPoint) convertPoint: (NSPoint)aPoint toView: (NSView*)aView
{
NSPoint new;
NSAffineTransform *matrix;
if (aView == nil)
{
aView = [[_window contentView] superview];
}
if (aView == self || aView == nil)
{
return aPoint;
}
NSAssert(_window == [aView window], NSInvalidArgumentException);
if (_coordinates_valid)
{
matrix = _matrixToWindow;
}
else
{
matrix = [self _matrixToWindow];
}
new = [matrix pointInMatrixSpace: aPoint];
matrix = [aView _matrixFromWindow];
new = [matrix pointInMatrixSpace: new];
return new;
}
- (NSRect) convertRect: (NSRect)aRect fromView: (NSView*)aView
{
NSAffineTransform *matrix;
NSRect r;
if (aView == nil)
{
aView = [[_window contentView] superview];
}
if (aView == self || aView == nil)
{
return aRect;
}
NSAssert(_window == [aView window], NSInvalidArgumentException);
matrix = [aView _matrixToWindow];
r.origin = [matrix pointInMatrixSpace: aRect.origin];
r.size = [matrix sizeInMatrixSpace: aRect.size];
if (_coordinates_valid)
{
matrix = _matrixFromWindow;
}
else
{
matrix = [self _matrixFromWindow];
}
r.origin = [matrix pointInMatrixSpace: r.origin];
r.size = [matrix sizeInMatrixSpace: r.size];
if (aView->_rFlags.flipped_view != _rFlags.flipped_view)
{
r.origin.y -= r.size.height;
}
return r;
}
- (NSRect) convertRect: (NSRect)aRect toView: (NSView*)aView
{
NSAffineTransform *matrix;
NSRect r;
if (aView == nil)
{
aView = [[_window contentView] superview];
}
if (aView == self || aView == nil)
{
return aRect;
}
NSAssert(_window == [aView window], NSInvalidArgumentException);
if (_coordinates_valid)
{
matrix = _matrixToWindow;
}
else
{
matrix = [self _matrixToWindow];
}
r.origin = [matrix pointInMatrixSpace: aRect.origin];
r.size = [matrix sizeInMatrixSpace: aRect.size];
matrix = [aView _matrixFromWindow];
r.origin = [matrix pointInMatrixSpace: r.origin];
r.size = [matrix sizeInMatrixSpace: r.size];
if (aView->_rFlags.flipped_view != _rFlags.flipped_view)
{
r.origin.y -= r.size.height;
}
return r;
}
- (NSSize) convertSize: (NSSize)aSize fromView: (NSView*)aView
{
NSSize new;
NSAffineTransform *matrix;
if (aView == nil)
{
aView = [[_window contentView] superview];
}
if (aView == self || aView == nil)
{
return aSize;
}
NSAssert(_window == [aView window], NSInvalidArgumentException);
matrix = [aView _matrixToWindow];
new = [matrix sizeInMatrixSpace: aSize];
if (_coordinates_valid)
{
matrix = _matrixFromWindow;
}
else
{
matrix = [self _matrixFromWindow];
}
new = [matrix sizeInMatrixSpace: new];
return new;
}
- (NSSize) convertSize: (NSSize)aSize toView: (NSView*)aView
{
NSSize new;
NSAffineTransform *matrix;
if (aView == nil)
{
aView = [[_window contentView] superview];
}
if (aView == self || aView == nil)
{
return aSize;
}
NSAssert(_window == [aView window], NSInvalidArgumentException);
if (_coordinates_valid)
{
matrix = _matrixToWindow;
}
else
{
matrix = [self _matrixToWindow];
}
new = [matrix sizeInMatrixSpace: aSize];
matrix = [aView _matrixFromWindow];
new = [matrix sizeInMatrixSpace: new];
return new;
}
- (void) setPostsFrameChangedNotifications: (BOOL)flag
{
_post_frame_changes = flag;
}
- (void) setPostsBoundsChangedNotifications: (BOOL)flag
{
_post_bounds_changes = flag;
}
/*
* resize subviews only if we are supposed to and we have never been rotated
*/
- (void) resizeSubviewsWithOldSize: (NSSize)oldSize
{
if (_rFlags.has_subviews)
{
id e, o;
if (_autoresizes_subviews == NO || _is_rotated_from_base == YES)
return;
e = [_sub_views objectEnumerator];
o = [e nextObject];
while (o)
{
[o resizeWithOldSuperviewSize: oldSize];
o = [e nextObject];
}
}
}
- (void) resizeWithOldSuperviewSize: (NSSize)oldSize
{
float change;
float changePerOption;
int options = 0;
NSRect newFrame, newBounds;
NSSize superViewFrameSize = [_super_view frame].size;
BOOL changedOrigin = NO;
BOOL changedSize = NO;
if (_autoresizingMask == NSViewNotSizable)
return;
newFrame = _frame;
newBounds = _bounds;
/*
* determine if and how the X axis can be resized
*/
if (_autoresizingMask & NSViewWidthSizable)
options++;
if (_autoresizingMask & NSViewMinXMargin)
options++;
if (_autoresizingMask & NSViewMaxXMargin)
options++;
/*
* adjust the X axis if any X options are set in the mask
*/
if (options >= 1)
{
change = superViewFrameSize.width - oldSize.width;
changePerOption = change/options;
if (_autoresizingMask & NSViewWidthSizable)
{
float oldFrameWidth = newFrame.size.width;
newFrame.size.width += changePerOption;
if (_is_rotated_or_scaled_from_base)
newBounds.size.width *= newFrame.size.width/oldFrameWidth;
else
newBounds.size.width += changePerOption;
changedSize = YES;
}
if (_autoresizingMask & NSViewMinXMargin)
{
newFrame.origin.x += changePerOption;
changedOrigin = YES;
}
}
/*
* determine if and how the Y axis can be resized
*/
options = 0;
if (_autoresizingMask & NSViewHeightSizable)
options++;
if (_autoresizingMask & NSViewMinYMargin)
options++;
if (_autoresizingMask & NSViewMaxYMargin)
options++;
/*
* adjust the Y axis if any Y options are set in the mask
*/
if (options >= 1)
{
change = superViewFrameSize.height - oldSize.height;
changePerOption = change/options;
if (_autoresizingMask & NSViewHeightSizable)
{
float oldFrameHeight = newFrame.size.height;
newFrame.size.height += changePerOption;
if (_is_rotated_or_scaled_from_base)
newBounds.size.height *= newFrame.size.height/oldFrameHeight;
else
newBounds.size.height += changePerOption;
changedSize = YES;
}
if (_autoresizingMask & (NSViewMaxYMargin | NSViewMinYMargin))
{
if (_super_view && _super_view->_rFlags.flipped_view == YES)
{
if (_autoresizingMask & NSViewMaxYMargin)
{
newFrame.origin.y += changePerOption;
changedOrigin = YES;
}
}
else
{
if (_autoresizingMask & NSViewMinYMargin)
{
newFrame.origin.y += changePerOption;
changedOrigin = YES;
}
}
}
}
[self setFrame: newFrame];
/* Since setFrame sets the bounds itself, reset it correctly */
_bounds = newBounds;
if (changedSize && _is_rotated_or_scaled_from_base)
[self _updateBoundsMatrix];
}
- (void) allocateGState
{
_allocate_gstate = 1;
_renew_gstate = 1;
}
- (void) releaseGState
{
if (_allocate_gstate && _gstate)
PSundefineuserobject(_gstate);
_gstate = 0;
_allocate_gstate = 0;
}
- (int) gState
{
return _gstate;
}
- (void) renewGState
{
_renew_gstate = 1;
}
/* Overridden by subclasses to setup custom gstate */
- (void) setUpGState
{
}
- (void) lockFocusInRect: (NSRect)rect
{
NSGraphicsContext *ctxt = GSCurrentContext();
struct NSWindow_struct *window_t;
NSRect wrect;
int window_gstate;
NSAssert(_window != nil, NSInternalInconsistencyException);
/* Check for deferred window */
if ((window_gstate = [_window gState]) == 0)
return;
[ctxt lockFocusView: self inRect: rect];
wrect = [self convertRect: rect toView: nil];
NSDebugLLog(@"NSView", @"Displaying rect \n\t%@\n\t window %p",
NSStringFromRect(wrect), _window);
window_t = (struct NSWindow_struct *)_window;
[window_t->_rectsBeingDrawn addObject: [NSValue valueWithRect: wrect]];
DPSgsave(ctxt);
if (_gstate)
{
DPSsetgstate(ctxt, _gstate);
if (_renew_gstate)
[self setUpGState];
_renew_gstate = 0;
DPSgsave(ctxt);
}
else
{
NSAffineTransform *matrix;
float x, y, w, h;
DPSsetgstate(ctxt, window_gstate);
DPSgsave(ctxt);
matrix = [self _matrixToWindow];
[matrix concat];
/*
* Clipping - set viewclip to the visible rectangle - which will never be
* greater than the bounds of the view.
* Set the standard clippath to an empty path.
*/
if ([matrix isRotated])
[matrix boundingRectFor: rect result: &rect];
x = NSMinX(rect);
y = NSMinY(rect);
w = NSWidth(rect);
h = NSHeight(rect);
DPSrectviewclip(ctxt, x, y, w, h);
/* Add any scaling due to the bounds matrix */
//[_boundsMatrix concat];
/* Allow subclases to make other modifications */
[self setUpGState];
_renew_gstate = 0;
if (_allocate_gstate)
{
DPSgstate(ctxt);
_gstate = GSWDefineAsUserObj(ctxt);
/* Balance the previous gsave and install our own gstate */
DPSgrestore(ctxt);
DPSsetgstate(ctxt, _gstate);
DPSgsave(ctxt);
}
}
GSWViewIsFlipped(ctxt, _rFlags.flipped_view);
}
- (void) unlockFocusNeedsFlush: (BOOL)flush
{
NSRect rect;
struct NSWindow_struct *window_t;
NSGraphicsContext *ctxt = GSCurrentContext();
NSAssert(_window != nil, NSInternalInconsistencyException);
/* Check for deferred window */
if ([_window gState] == 0)
return;
/* Restore our original gstate */
DPSgrestore(ctxt);
/* Restore gstate of nesting lockFocus (if any) */
DPSgrestore(ctxt);
if (!_allocate_gstate)
_gstate = 0;
window_t = (struct NSWindow_struct *)_window;
if (flush)
{
rect = [[window_t->_rectsBeingDrawn lastObject] rectValue];
window_t->_rectNeedingFlush =
NSUnionRect(window_t->_rectNeedingFlush, rect);
window_t->_f.needs_flush = YES;
}
[window_t->_rectsBeingDrawn removeLastObject];
[ctxt unlockFocusView: self needsFlush: YES ];
}
- (void) lockFocus
{
[self lockFocusInRect: [self visibleRect]];
}
- (void) unlockFocus
{
[self unlockFocusNeedsFlush: YES ];
}
- (BOOL) canDraw
{ // not implemented per OS spec FIX ME
if (_window)
return YES;
else
return NO;
}
- (void) display
{
if (_window != nil)
{
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
[self displayRect: _visibleRect];
}
}
- (void) displayIfNeeded
{
if (_rFlags.needs_display == YES)
{
if ([self isOpaque] == YES)
{
[self displayIfNeededIgnoringOpacity];
}
else
{
NSView *firstOpaque = [self opaqueAncestor];
NSRect rect;
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
rect = NSIntersectionRect(_invalidRect, _visibleRect);
rect = [firstOpaque convertRect: rect fromView: self];
if (NSIsEmptyRect(rect) == NO)
{
[firstOpaque displayIfNeededInRectIgnoringOpacity: rect];
}
/*
* If we still need display after displaying the invalid rectangle,
* display any subviews that need display.
*/
if (_rFlags.needs_display == YES)
{
NSEnumerator *enumerator = [_sub_views objectEnumerator];
NSView *sub;
while ((sub = [enumerator nextObject]) != nil)
{
if (sub->_rFlags.needs_display)
{
[sub displayIfNeededIgnoringOpacity];
}
}
_rFlags.needs_display = NO;
}
}
}
}
- (void) displayIfNeededIgnoringOpacity
{
if (_rFlags.needs_display == YES)
{
NSRect rect;
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
rect = NSIntersectionRect(_invalidRect, _visibleRect);
if (NSIsEmptyRect(rect) == NO)
{
[self displayIfNeededInRectIgnoringOpacity: rect];
}
/*
* If we still need display after displaying the invalid rectangle,
* display any subviews that need display.
*/
if (_rFlags.needs_display == YES)
{
NSEnumerator *enumerator = [_sub_views objectEnumerator];
NSView *sub;
while ((sub = [enumerator nextObject]) != nil)
{
if (sub->_rFlags.needs_display)
{
[sub displayIfNeededIgnoringOpacity];
}
}
_rFlags.needs_display = NO;
}
}
}
- (void) displayIfNeededInRect: (NSRect)aRect
{
if (_rFlags.needs_display == NO)
{
if ([self isOpaque] == YES)
{
[self displayIfNeededInRectIgnoringOpacity: aRect];
}
else
{
NSView *firstOpaque = [self opaqueAncestor];
NSRect rect;
rect = [firstOpaque convertRect: aRect fromView: self];
[firstOpaque displayIfNeededInRectIgnoringOpacity: rect];
}
}
}
- (void) displayIfNeededInRectIgnoringOpacity: (NSRect)aRect
{
if (_window == nil)
{
return;
}
if (_rFlags.needs_display == YES)
{
BOOL subviewNeedsDisplay = NO;
NSRect neededRect;
NSRect redrawRect;
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
aRect = NSIntersectionRect(aRect, _visibleRect);
redrawRect = NSIntersectionRect(aRect, _invalidRect);
neededRect = NSIntersectionRect(_visibleRect, _invalidRect);
if (NSIsEmptyRect(redrawRect) == NO)
{
[self lockFocusInRect: redrawRect];
[self drawRect: redrawRect];
[self unlockFocusNeedsFlush: YES];
}
if (_rFlags.has_subviews == YES)
{
unsigned count = [_sub_views count];
if (count > 0)
{
NSView *array[count];
unsigned i;
[_sub_views getObjects: array];
for (i = 0; i < count; i++)
{
NSRect isect;
NSView *subview = array[i];
NSRect subviewFrame = subview->_frame;
BOOL intersectCalculated = NO;
if ([subview->_frameMatrix isRotated])
{
[subview->_frameMatrix boundingRectFor: subviewFrame
result: &subviewFrame];
}
/*
* Having drawn ourself into the rect, we must make sure that
* subviews overlapping the area are redrawn.
*/
isect = NSIntersectionRect(redrawRect, subviewFrame);
if (NSIsEmptyRect(isect) == NO)
{
isect = [subview convertRect: isect
fromView: self];
intersectCalculated = YES;
/*
* hack the ivars of the subview directly for speed.
*/
subview->_rFlags.needs_display = YES;
subview->_invalidRect = NSUnionRect(subview->_invalidRect,
isect);
}
if (subview->_rFlags.needs_display == YES)
{
if (intersectCalculated == NO
|| NSEqualRects(aRect, redrawRect) == NO)
{
isect = NSIntersectionRect(aRect, subviewFrame);
isect = [subview convertRect: isect
fromView: self];
}
[subview displayIfNeededInRectIgnoringOpacity: isect];
if (subview->_rFlags.needs_display == YES)
{
subviewNeedsDisplay = YES;
}
}
}
}
}
/*
* If the rect we displayed contains the _invalidRect or _visibleRect
* then we can empty _invalidRect.
* If all subviews have been fully displayed, we can also turn off the
* 'needs_display' flag.
*/
if (NSEqualRects(aRect, NSUnionRect(neededRect, aRect)) == YES)
{
_invalidRect = NSZeroRect;
_rFlags.needs_display = subviewNeedsDisplay;
}
if (_rFlags.needs_display == YES
&& NSEqualRects(aRect, NSUnionRect(_visibleRect, aRect)) == YES)
{
_rFlags.needs_display = NO;
}
[_window flushWindow];
}
}
- (void) displayRect: (NSRect)rect
{
if ([self isOpaque] == YES)
{
[self displayRectIgnoringOpacity: rect];
}
else
{
NSView *firstOpaque = [self opaqueAncestor];
rect = [firstOpaque convertRect: rect fromView: self];
[firstOpaque displayRectIgnoringOpacity: rect];
}
}
- (void) displayRectIgnoringOpacity: (NSRect)aRect
{
BOOL subviewNeedsDisplay = NO;
NSRect neededRect;
if (_window == nil)
{
return;
}
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
aRect = NSIntersectionRect(aRect, _visibleRect);
neededRect = NSIntersectionRect(_invalidRect, _visibleRect);
if (NSIsEmptyRect(aRect) == NO)
{
/*
* Now we draw this view.
*/
[self lockFocusInRect: aRect];
[self drawRect: aRect];
[self unlockFocusNeedsFlush: YES];
}
if (_rFlags.has_subviews == YES)
{
unsigned count = [_sub_views count];
if (count > 0)
{
NSView *array[count];
unsigned i;
[_sub_views getObjects: array];
for (i = 0; i < count; ++i)
{
NSView *subview = array[i];
NSRect subviewFrame = subview->_frame;
NSRect isect;
BOOL intersectCalculated = NO;
if ([subview->_frameMatrix isRotated] == YES)
[subview->_frameMatrix boundingRectFor: subviewFrame
result: &subviewFrame];
/*
* Having drawn ourself into the rect, we must make sure that
* subviews overlapping the area are redrawn.
*/
isect = NSIntersectionRect(aRect, subviewFrame);
if (NSIsEmptyRect(isect) == NO)
{
isect = [subview convertRect: isect
fromView: self];
intersectCalculated = YES;
/*
* hack the ivars of the subview directly for speed.
*/
subview->_rFlags.needs_display = YES;
subview->_invalidRect = NSUnionRect(subview->_invalidRect,
isect);
}
if (subview->_rFlags.needs_display == YES)
{
if (intersectCalculated == NO)
{
isect = [subview convertRect: isect
fromView: self];
}
[subview displayIfNeededInRectIgnoringOpacity: isect];
if (subview->_rFlags.needs_display == YES)
{
subviewNeedsDisplay = YES;
}
}
}
}
}
/*
* If the rect we displayed contains the _invalidRect or _visibleRect
* then we can empty _invalidRect. If all subviews have been
* fully displayed, we can also turn off the 'needs_display' flag.
*/
if (NSEqualRects(aRect, NSUnionRect(neededRect, aRect)) == YES)
{
_invalidRect = NSZeroRect;
_rFlags.needs_display = subviewNeedsDisplay;
}
if (_rFlags.needs_display == YES
&& NSEqualRects(aRect, NSUnionRect(_visibleRect, aRect)) == YES)
{
_rFlags.needs_display = NO;
}
[_window flushWindow];
}
- (void) drawRect: (NSRect)rect
{}
- (NSRect) visibleRect
{
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
return _visibleRect;
}
- (void) setNeedsDisplay: (BOOL)flag
{
if (flag)
{
[self setNeedsDisplayInRect: _bounds];
}
else
{
_rFlags.needs_display = NO;
_invalidRect = NSZeroRect;
}
}
- (void) setNeedsDisplayInRect: (NSRect)rect
{
NSView *currentView = _super_view;
/*
* Limit to bounds, combine with old _invalidRect, and then check to see
* if the result is the same as the old _invalidRect - if it isn't then
* set the new _invalidRect.
*/
rect = NSIntersectionRect(rect, _bounds);
rect = NSUnionRect(_invalidRect, rect);
if (NSEqualRects(rect, _invalidRect) == NO)
{
NSView *firstOpaque = [self opaqueAncestor];
_rFlags.needs_display = YES;
_invalidRect = rect;
if (firstOpaque == self)
{
[_window setViewsNeedDisplay: YES];
}
else
{
rect = [firstOpaque convertRect: _invalidRect fromView: self];
[firstOpaque setNeedsDisplayInRect: rect];
}
}
/*
* Must make sure that superviews know that we need display.
* NB. we may have been marked as needing display and then moved to another
* parent, so we can't assume that our parent is marked simply because we are.
*/
while (currentView)
{
currentView->_rFlags.needs_display = YES;
currentView = currentView->_super_view;
}
}
/*
* Scrolling
*/
- (NSRect) adjustScroll: (NSRect)newVisible
{
return newVisible;
}
- (BOOL) autoscroll: (NSEvent*)theEvent
{
if (_super_view)
return [_super_view autoscroll: theEvent];
return NO;
}
- (void) reflectScrolledClipView: (NSClipView*)aClipView
{}
- (void) scrollClipView: (NSClipView*)aClipView toPoint: (NSPoint)aPoint
{}
- (void) scrollPoint: (NSPoint)aPoint
{
NSClipView *s = (NSClipView*)_super_view;
while (s != nil && [s isKindOfClass: [NSClipView class]] == NO)
{
s = (NSClipView*)[s superview];
}
aPoint = [self convertPoint: aPoint toView: s];
if (NSEqualPoints(aPoint, [s bounds].origin) == NO)
{
[s scrollToPoint: aPoint];
}
}
- (void) scrollRect: (NSRect)aRect by: (NSSize)delta
{}
- (BOOL) scrollRectToVisible: (NSRect)aRect
{
NSClipView *s = (NSClipView*)_super_view;
while (s != nil && [s isKindOfClass: [NSClipView class]] == NO)
{
s = (NSClipView*)[s superview];
}
if (s != nil)
{
NSRect vRect = [self visibleRect];
NSPoint aPoint = vRect.origin;
BOOL shouldScroll = NO;
if (vRect.size.width == 0 && vRect.size.height == 0)
return NO;
if (!(NSMinX(vRect) <= NSMinX(aRect)
&& (NSMaxX(vRect) >= NSMaxX(aRect))))
{
shouldScroll = YES;
if (aRect.origin.x < vRect.origin.x)
aPoint.x = aRect.origin.x;
else
{
float visibleRange = vRect.origin.x + vRect.size.width;
float aRectRange = aRect.origin.x + aRect.size.width;
aPoint.x = vRect.origin.x + (aRectRange - visibleRange);
}
}
if (!(NSMinY(vRect) <= NSMinY(aRect)
&& (NSMaxY(vRect) >= NSMaxY(aRect))))
{
shouldScroll = YES;
if (aRect.origin.y < vRect.origin.y)
aPoint.y = aRect.origin.y;
else
{
float visibleRange = vRect.origin.y + vRect.size.height;
float aRectRange = aRect.origin.y + aRect.size.height;
aPoint.y = vRect.origin.y + (aRectRange - visibleRange);
}
}
if (shouldScroll)
{
aPoint = [self convertPoint: aPoint toView: s];
[s scrollToPoint: aPoint];
return YES;
}
}
return NO;
}
- (NSScrollView*) enclosingScrollView
{
id aView = [self superview];
while (aView != nil)
{
if ([aView isKindOfClass: [NSScrollView class]])
{
break;
}
aView = [aView superview];
}
return aView;
}
/*
* Managing the Cursor
*
* We use the tracking rectangle class to maintain the cursor rects
*/
- (void) addCursorRect: (NSRect)aRect cursor: (NSCursor*)anObject
{
if (_window != nil)
{
GSTrackingRect *m;
aRect = [self convertRect: aRect toView: nil];
m = [rectClass allocWithZone: NSDefaultMallocZone()];
m = [m initWithRect: aRect
tag: 0
owner: anObject
userData: NULL
inside: YES];
[_cursor_rects addObject: m];
RELEASE(m);
_rFlags.has_currects = 1;
_rFlags.valid_rects = 1;
}
}
- (void) discardCursorRects
{
if (_rFlags.has_currects != 0)
{
if (_rFlags.valid_rects != 0)
{
[_cursor_rects makeObjectsPerformSelector: @selector(invalidate)];
_rFlags.valid_rects = 0;
}
[_cursor_rects removeAllObjects];
_rFlags.has_currects = 0;
}
}
- (void) removeCursorRect: (NSRect)aRect cursor: (NSCursor*)anObject
{
id e = [_cursor_rects objectEnumerator];
GSTrackingRect *o;
NSCursor *c;
/* Base remove test upon cursor object */
o = [e nextObject];
while (o)
{
c = [o owner];
if (c == anObject)
{
[o invalidate];
[_cursor_rects removeObject: o];
if ([_cursor_rects count] == 0)
{
_rFlags.has_currects = 0;
_rFlags.valid_rects = 0;
}
break;
}
else
{
o = [e nextObject];
}
}
}
- (void) resetCursorRects
{
}
static NSView* findByTag(NSView *view, int aTag, unsigned *level)
{
unsigned i, count;
NSArray *sub = [view subviews];
count = [sub count];
if (count > 0)
{
NSView *array[count];
[sub getObjects: array];
for (i = 0; i < count; i++)
{
if ([array[i] tag] == aTag)
return array[i];
}
*level += 1;
for (i = 0; i < count; i++)
{
NSView *v;
v = findByTag(array[i], aTag, level);
if (v != nil)
return v;
}
*level -= 1;
}
return nil;
}
- (id) viewWithTag: (int)aTag
{
NSView *view = nil;
/*
* If we have the specified tag - return self.
*/
if ([self tag] == aTag)
{
view = self;
}
else if (_rFlags.has_subviews)
{
unsigned count = [_sub_views count];
if (count > 0)
{
NSView *array[count];
unsigned i;
[_sub_views getObjects: array];
/*
* Quick check to see if any of our direct descendents has the tag.
*/
for (i = 0; i < count; i++)
{
NSView *subView = array[i];
if ([subView tag] == aTag)
{
view = subView;
break;
}
}
if (view == nil)
{
unsigned level = 0xffffffff;
/*
* Ok - do it the long way - search the while tree for each of
* our descendents and see which has the closest view matching
* the tag.
*/
for (i = 0; i < count; i++)
{
unsigned l = 0;
NSView *v;
v = findByTag(array[i], aTag, &l);
if (v != nil && l < level)
{
view = v;
level = l;
}
}
}
}
}
return view;
}
/*
* Aiding Event Handling
*/
- (BOOL) acceptsFirstMouse: (NSEvent*)theEvent
{
return NO;
}
- (NSView*) hitTest: (NSPoint)aPoint
{
NSPoint p;
unsigned count;
NSView *v = nil, *w;
/* If not within our frame then it can't be a hit */
if (![_super_view mouse: aPoint inRect: _frame])
return nil;
p = [self convertPoint: aPoint fromView: _super_view];
if (_rFlags.has_subviews)
{
count = [_sub_views count];
if (count > 0)
{
NSView* array[count];
[_sub_views getObjects: array];
while (count > 0)
{
w = array[--count];
v = [w hitTest: p];
if (v)
break;
}
}
}
/*
* mouse is either in the subview or within self
*/
if (v)
return v;
else
return self;
}
- (BOOL) mouse: (NSPoint)aPoint inRect: (NSRect)aRect
{
if (aPoint.x < aRect.origin.x)
return NO;
if (aPoint.y < aRect.origin.y)
return NO;
if (aPoint.x > (aRect.origin.x + aRect.size.width))
return NO;
if (aPoint.y > (aRect.origin.y + aRect.size.height))
return NO;
return YES;
}
- (BOOL) performKeyEquivalent: (NSEvent*)theEvent
{
unsigned i;
for (i = 0; i < [_sub_views count]; i++)
if ([[_sub_views objectAtIndex: i] performKeyEquivalent: theEvent] == YES)
return YES;
return NO;
}
- (void) removeTrackingRect: (NSTrackingRectTag)tag
{
unsigned i, j;
GSTrackingRect *m;
j = [_tracking_rects count];
for (i = 0;i < j; ++i)
{
m = (GSTrackingRect*)[_tracking_rects objectAtIndex: i];
if ([m tag] == tag)
{
[_tracking_rects removeObjectAtIndex: i];
if ([_tracking_rects count] == 0)
_rFlags.has_trkrects = 0;
return;
}
}
}
- (BOOL) shouldDelayWindowOrderingForEvent: (NSEvent*)anEvent
{
return NO;
}
- (NSTrackingRectTag) addTrackingRect: (NSRect)aRect
owner: (id)anObject
userData: (void*)data
assumeInside: (BOOL)flag
{
NSTrackingRectTag t;
unsigned i, j;
GSTrackingRect *m;
t = 0;
j = [_tracking_rects count];
for (i = 0; i < j; ++i)
{
m = (GSTrackingRect*)[_tracking_rects objectAtIndex: i];
if ([m tag] > t)
t = [m tag];
}
++t;
aRect = [self convertRect: aRect toView: nil];
m = [[rectClass alloc] initWithRect: aRect
tag: t
owner: anObject
userData: data
inside: flag];
[_tracking_rects addObject: m];
RELEASE(m);
_rFlags.has_trkrects = 1;
return t;
}
- (void) setNextKeyView: (NSView *)aView
{
if (!aView)
{
_nextKeyView = nil;
return;
}
if ([aView isKindOfClass: viewClass])
{
// As an exception, we do not retain aView, to avoid retain loops
// (the simplest being a view retaining and being retained
// by another view), which prevents objects from being ever
// deallocated. To understand how we manage without retaining
// _nextKeyView, see [NSView -dealloc].
_nextKeyView = aView;
if ([aView previousKeyView] != self)
[aView setPreviousKeyView: self];
}
}
- (NSView *) nextKeyView
{
return _nextKeyView;
}
- (NSView *) nextValidKeyView
{
NSView *theView;
theView = _nextKeyView;
while (1)
{
if ([theView acceptsFirstResponder] || (theView == nil)
|| (theView == self))
return theView;
theView = [theView nextKeyView];
}
}
- (void) setPreviousKeyView: (NSView *)aView
{
if (!aView)
{
_previousKeyView = nil;
return;
}
if ([aView isKindOfClass: viewClass])
{
_previousKeyView = aView;
if ([aView nextKeyView] != self)
[aView setNextKeyView: self];
}
}
- (NSView *) previousKeyView
{
return _previousKeyView;
}
- (NSView *) previousValidKeyView
{
NSView *theView;
theView = _previousKeyView;
while (1)
{
if ([theView acceptsFirstResponder] || (theView == nil)
|| (theView == self))
return theView;
theView = [theView previousKeyView];
}
}
/*
* Dragging
*/
- (BOOL) dragFile: (NSString*)filename
fromRect: (NSRect)rect
slideBack: (BOOL)slideFlag
event: (NSEvent*)event
{
return NO;
}
- (void) dragImage: (NSImage*)anImage
at: (NSPoint)viewLocation
offset: (NSSize)initialOffset
event: (NSEvent*)event
pasteboard: (NSPasteboard*)pboard
source: (id)sourceObject
slideBack: (BOOL)slideFlag
{
NSView *dragView = (NSView*)[GSCurrentContext() _dragInfo];
[dragView dragImage: anImage
at: viewLocation
offset: initialOffset
event: event
pasteboard: pboard
source: sourceObject
slideBack: slideFlag];
}
- (void) registerForDraggedTypes: (NSArray*)types
{
NSArray *o;
NSArray *t;
if (types == nil || [types count] == 0)
[NSException raise: NSInvalidArgumentException
format: @"Types information missing"];
/*
* Get the old drag types for this view if we need to tell the context
* to change the registered types for the window.
*/
if (_rFlags.has_draginfo == 1 && _window != nil)
{
o = GSGetDragTypes(self);
TEST_RETAIN(o);
}
else
{
o = nil;
}
t = GSSetDragTypes(self, types);
_rFlags.has_draginfo = 1;
if (_window != nil)
{
NSGraphicsContext *ctxt = GSCurrentContext();
[ctxt _addDragTypes: t toWindow: _window];
if (o != nil)
{
[ctxt _removeDragTypes: o fromWindow: _window];
}
}
TEST_RELEASE(o);
}
- (void) unregisterDraggedTypes
{
if (_rFlags.has_draginfo)
{
if (_window != nil)
{
NSGraphicsContext *ctxt = GSCurrentContext();
NSArray *t = GSGetDragTypes(self);
[ctxt _removeDragTypes: t fromWindow: _window];
}
GSRemoveDragTypes(self);
_rFlags.has_draginfo = 0;
}
}
/*
* Printing
*/
- (NSData*) dataWithEPSInsideRect: (NSRect)aRect
{
NSMutableData *data = [NSMutableData data];
[[NSPrintOperation EPSOperationWithView: self
insideRect: aRect
toData: data] runOperation];
return data;
}
- (void) fax: (id)sender
{
NSPrintInfo *aPrintInfo = [NSPrintInfo sharedPrintInfo];
[aPrintInfo setJobDisposition: NSPrintFaxJob];
[[NSPrintOperation printOperationWithView: self
printInfo: aPrintInfo] runOperation];
}
- (void) print: (id)sender
{
[[NSPrintOperation printOperationWithView: self] runOperation];
}
- (void) writeEPSInsideRect: (NSRect)rect
toPasteboard: (NSPasteboard*)pasteboard
{
NSData *data = [self dataWithEPSInsideRect: rect];
if (data != nil)
[pasteboard setData: data
forType: NSPostScriptPboardType];
}
/*
* Pagination
*/
- (void) adjustPageHeightNew: (float*)newBottom
top: (float)oldTop
bottom: (float)oldBottom
limit: (float)bottomLimit
{
}
- (void) adjustPageWidthNew: (float*)newRight
left: (float)oldLeft
right: (float)oldRight
limit: (float)rightLimit
{
}
- (float) heightAdjustLimit
{
return 0;
}
- (BOOL) knowsPagesFirst: (int*)firstPageNum last: (int*)lastPageNum
{
return NO;
}
- (NSPoint) locationOfPrintRect: (NSRect)aRect
{
return NSZeroPoint;
}
- (NSRect) rectForPage: (int)page
{
return NSZeroRect;
}
- (float) widthAdjustLimit
{
return 0;
}
/*
* Writing Conforming PostScript
*/
- (void) beginPage: (int)ordinalNum
label: (NSString*)aString
bBox: (NSRect)pageRect
fonts: (NSString*)fontNames
{
}
- (void) beginPageSetupRect: (NSRect)aRect placement: (NSPoint)location
{
}
- (void) beginPrologueBBox: (NSRect)boundingBox
creationDate: (NSString*)dateCreated
createdBy: (NSString*)anApplication
fonts: (NSString*)fontNames
forWhom: (NSString*)user
pages: (int)numPages
title: (NSString*)aTitle
{
}
- (void) addToPageSetup
{
}
- (void) beginSetup
{
}
- (void) beginTrailer
{
}
- (void) drawPageBorderWithSize: (NSSize)borderSize
{
}
- (void) drawSheetBorderWithSize: (NSSize)borderSize
{
}
- (void) endHeaderComments
{
}
- (void) endPrologue
{
}
- (void) endSetup
{
}
- (void) endPageSetup
{
}
- (void) endPage
{
}
- (void) endTrailer
{
}
/*
* NSCoding protocol
*/
- (void) encodeWithCoder: (NSCoder*)aCoder
{
[super encodeWithCoder: aCoder];
NSDebugLLog(@"NSView", @"NSView: start encoding\n");
[aCoder encodeRect: _frame];
[aCoder encodeRect: _bounds];
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &_is_rotated_from_base];
[aCoder encodeValueOfObjCType: @encode(BOOL)
at: &_is_rotated_or_scaled_from_base];
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &_post_frame_changes];
[aCoder encodeValueOfObjCType: @encode(BOOL) at: &_autoresizes_subviews];
[aCoder encodeValueOfObjCType: @encode(unsigned int) at: &_autoresizingMask];
[aCoder encodeConditionalObject: _nextKeyView];
[aCoder encodeConditionalObject: _previousKeyView];
[aCoder encodeObject: _sub_views];
NSDebugLLog(@"NSView", @"NSView: finish encoding\n");
}
- (id) initWithCoder: (NSCoder*)aDecoder
{
NSRect rect;
NSEnumerator *e;
NSView *sub;
NSArray *subs;
self = [super initWithCoder: aDecoder];
NSDebugLLog(@"NSView", @"NSView: start decoding\n");
_frame = [aDecoder decodeRect];
_bounds.origin = NSZeroPoint;
_bounds.size = _frame.size;
_frameMatrix = [NSAffineTransform new]; // Map fromsuperview to frame
_boundsMatrix = [NSAffineTransform new]; // Map fromsuperview to bounds
_matrixToWindow = [NSAffineTransform new]; // Map to window coordinates
_matrixFromWindow = [NSAffineTransform new]; // Map from window coordinates
[_frameMatrix setFrameOrigin: _frame.origin];
rect = [aDecoder decodeRect];
[self setBounds: rect];
_sub_views = [NSMutableArray new];
_tracking_rects = [NSMutableArray new];
_cursor_rects = [NSMutableArray new];
_super_view = nil;
_window = nil;
_rFlags.needs_display = YES;
_coordinates_valid = NO;
_rFlags.flipped_view = [self isFlipped];
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_is_rotated_from_base];
[aDecoder decodeValueOfObjCType: @encode(BOOL)
at: &_is_rotated_or_scaled_from_base];
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_post_frame_changes];
[aDecoder decodeValueOfObjCType: @encode(BOOL) at: &_autoresizes_subviews];
[aDecoder decodeValueOfObjCType: @encode(unsigned int) at: &_autoresizingMask];
_nextKeyView = [aDecoder decodeObject];
_previousKeyView = [aDecoder decodeObject];
[aDecoder decodeValueOfObjCType: @encode(id) at: &subs];
e = [subs objectEnumerator];
while ((sub = [e nextObject]) != nil)
{
NSAssert(sub->_window == nil, NSInternalInconsistencyException);
NSAssert(sub->_super_view == nil, NSInternalInconsistencyException);
[sub viewWillMoveToWindow: _window];
[sub viewWillMoveToSuperview: self];
[sub setNextResponder: self];
[_sub_views addObject: sub];
_rFlags.has_subviews = 1;
[sub resetCursorRects];
[sub setNeedsDisplay: YES];
}
RELEASE(subs);
NSDebugLLog(@"NSView", @"NSView: finish decoding\n");
return self;
}
/*
* Accessor methods
*/
- (void) setAutoresizesSubviews: (BOOL)flag
{
_autoresizes_subviews = flag;
}
- (void) setAutoresizingMask: (unsigned int)mask
{
_autoresizingMask = mask;
}
- (NSWindow*) window
{
return _window;
}
- (BOOL) autoresizesSubviews
{
return _autoresizes_subviews;
}
- (unsigned int) autoresizingMask
{
return _autoresizingMask;
}
- (NSArray*) subviews
{
/*
* Return a mutable copy 'cos we know that a mutable copy of an array or
* a mutable array does a shallow copy - which is what we want to give
* away - we don't want people to mess with our actual subviews array.
*/
return AUTORELEASE([_sub_views mutableCopyWithZone: NSDefaultMallocZone()]);
}
- (NSView*) superview
{
return _super_view;
}
- (BOOL) shouldDrawColor
{
return YES;
}
- (BOOL) isOpaque
{
return NO;
}
- (BOOL) needsDisplay
{
return _rFlags.needs_display;
}
- (int) tag
{
return -1;
}
- (BOOL) isFlipped
{
return NO;
}
- (NSRect) bounds
{
return _bounds;
}
- (NSRect) frame
{
return _frame;
}
- (float) boundsRotation
{
return [_boundsMatrix rotationAngle];
}
- (float) frameRotation
{
return [_frameMatrix rotationAngle];
}
- (BOOL) postsFrameChangedNotifications
{
return _post_frame_changes;
}
- (BOOL) postsBoundsChangedNotifications
{
return _post_bounds_changes;
}
/*
* Private methods.
*/
/*
* The [-_invalidateCoordinates] method marks the coordinate mapping
* matrices (matrixFromWindof and _matrixToWindow) and the cached visible
* rectangle as invalid. It recursively invalidates the coordinates for
* all subviews as well.
* This method must be called whenever the size, shape or position of
* the view is changed in any way.
*/
- (void) _invalidateCoordinates
{
if (_coordinates_valid == YES)
{
unsigned count;
_coordinates_valid = NO;
if (_rFlags.valid_rects != 0)
{
[_window invalidateCursorRectsForView: self];
}
if (_rFlags.has_subviews)
{
count = [_sub_views count];
if (count > 0)
{
NSView* array[count];
unsigned i;
[_sub_views getObjects: array];
for (i = 0; i < count; i++)
{
NSView *sub = array[i];
if (sub->_coordinates_valid == YES)
{
(*invalidateImp)(sub, invalidateSel);
}
}
}
}
}
}
/*
* The [-_matrixFromWindow] method returns a matrix that can be used to
* map coordinates in the windows coordinate system to coordinates in the
* views coordinate system. It rebuilds the mapping matrices and
* visible rectangle cache if necessary.
* All coordinate transformations use this matrix.
*/
- (NSAffineTransform*) _matrixFromWindow
{
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
return _matrixFromWindow;
}
/*
* The [-_matrixToWindow] method returns a matrix that can be used to
* map coordinates in the views coordinate system to coordinates in the
* windows coordinate system. It rebuilds the mapping matrices and
* visible rectangle cache if necessary.
* All coordinate transformations use this matrix.
*/
- (NSAffineTransform*) _matrixToWindow
{
if (_coordinates_valid == NO)
{
[self _rebuildCoordinates];
}
return _matrixToWindow;
}
/*
* The [-_rebuildCoordinates] method rebuilds the coordinate mapping
* matrices (matrixFromWindof and _matrixToWindow) and the cached visible
* rectangle if they have been invalidated.
*/
- (void) _rebuildCoordinates
{
if (_coordinates_valid == NO)
{
_coordinates_valid = YES;
if (!_window)
{
_visibleRect = NSZeroRect;
[_matrixToWindow makeIdentityMatrix];
[_matrixFromWindow makeIdentityMatrix];
}
if (!_super_view)
{
_visibleRect = _bounds;
[_matrixToWindow makeIdentityMatrix];
[_matrixFromWindow makeIdentityMatrix];
}
else
{
NSRect superviewsVisibleRect;
BOOL wasFlipped = _super_view->_rFlags.flipped_view;
float vals[6];
NSAffineTransform *pMatrix = [_super_view _matrixToWindow];
[pMatrix getMatrix: vals];
[_matrixToWindow setMatrix: vals];
(*appImp)(_matrixToWindow, appSel, _frameMatrix);
if (_rFlags.flipped_view != wasFlipped)
{
/*
* The flipping process must result in a coordinate system that
* exactly overlays the original. To do that, we must translate
* the origin by the height of the view.
*/
flip->matrix.ty = _bounds.size.height;
(*appImp)(_matrixToWindow, appSel, flip);
}
(*appImp)(_matrixToWindow, appSel, _boundsMatrix);
[_matrixToWindow getMatrix: vals];
[_matrixFromWindow setMatrix: vals];
[_matrixFromWindow inverse];
superviewsVisibleRect = [self convertRect: [_super_view visibleRect]
fromView: _super_view];
_visibleRect = NSIntersectionRect(superviewsVisibleRect, _bounds);
}
}
}
@end
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