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BWSplitView.m
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//
// BWSplitView.m
// BWToolkit
//
// Created by Brandon Walkin (www.brandonwalkin.com) and Fraser Kuyvenhoven.
// All code is provided under the New BSD license.
//
#import "BWSplitView.h"
#import "BWAnchoredButtonBar.h"
#import "NSColor+BWAdditions.h"
#import "NSEvent+BWAdditions.h"
static NSGradient *gradient;
static NSImage *dimpleImageBitmap, *dimpleImageVector;
static NSColor *borderColor, *gradientStartColor, *gradientEndColor;
static float scaleFactor = 1.0f;
#define dimpleDimension 4.0f
#define RESIZE_DEBUG_LOGS 0
@interface BWSplitView (BWSVPrivate)
- (void)drawDimpleInRect:(NSRect)aRect;
- (void)drawGradientDividerInRect:(NSRect)aRect;
- (int)resizableSubviews;
- (BOOL)subviewIsResizable:(NSView *)subview;
- (BOOL)subviewIsCollapsible:(NSView *)subview;
- (BOOL)subviewIsCollapsed:(NSView *)subview;
- (int)collapsibleSubviewIndex;
- (NSView *)collapsibleSubview;
- (BOOL)hasCollapsibleSubview;
- (BOOL)collapsibleSubviewIsCollapsed;
- (CGFloat)subviewMinimumSize:(int)subviewIndex;
- (CGFloat)subviewMaximumSize:(int)subviewIndex;
- (void)recalculatePreferredProportionsAndSizes;
- (BOOL)validatePreferredProportionsAndSizes;
- (void)validateAndCalculatePreferredProportionsAndSizes;
- (void)clearPreferredProportionsAndSizes;
- (void)resizeAndAdjustSubviews;
@end
@interface BWSplitView ()
@property BOOL checkboxIsEnabled;
@end
@implementation BWSplitView
@synthesize color, colorIsEnabled, checkboxIsEnabled, minValues, maxValues, minUnits, maxUnits, collapsiblePopupSelection, dividerCanCollapse, collapsibleSubviewCollapsed;
@synthesize resizableSubviewPreferredProportion, nonresizableSubviewPreferredSize, stateForLastPreferredCalculations;
@synthesize toggleCollapseButton, secondaryDelegate;
+ (void)initialize;
{
borderColor = [[NSColor colorWithCalibratedWhite:(165.0f / 255.0f) alpha:1] retain];
gradientStartColor = [[NSColor colorWithCalibratedWhite:(253.0f / 255.0f) alpha:1] retain];
gradientEndColor = [[NSColor colorWithCalibratedWhite:(222.0f / 255.0f) alpha:1] retain];
gradient = [[NSGradient alloc] initWithStartingColor:gradientStartColor endingColor:gradientEndColor];
NSBundle *bundle = [NSBundle bundleForClass:[BWSplitView class]];
dimpleImageBitmap = [[NSImage alloc] initWithContentsOfFile:[bundle pathForImageResource:@"GradientSplitViewDimpleBitmap.png"]];
dimpleImageVector = [[NSImage alloc] initWithContentsOfFile:[bundle pathForImageResource:@"GradientSplitViewDimpleVector.pdf"]];
[dimpleImageBitmap setFlipped:YES];
[dimpleImageVector setFlipped:YES];
}
- (id)initWithCoder:(NSCoder *)decoder;
{
if ((self = [super initWithCoder:decoder]) != nil)
{
[self setColor:[decoder decodeObjectForKey:@"BWSVColor"]];
[self setColorIsEnabled:[decoder decodeBoolForKey:@"BWSVColorIsEnabled"]];
[self setMinValues:[decoder decodeObjectForKey:@"BWSVMinValues"]];
[self setMaxValues:[decoder decodeObjectForKey:@"BWSVMaxValues"]];
[self setMinUnits:[decoder decodeObjectForKey:@"BWSVMinUnits"]];
[self setMaxUnits:[decoder decodeObjectForKey:@"BWSVMaxUnits"]];
[self setCollapsiblePopupSelection:[decoder decodeIntForKey:@"BWSVCollapsiblePopupSelection"]];
[self setDividerCanCollapse:[decoder decodeBoolForKey:@"BWSVDividerCanCollapse"]];
// Delegate set in nib has been decoded, but we want that to be the secondary delegate
[self setDelegate:[super delegate]];
[super setDelegate:self];
}
return self;
}
- (void)encodeWithCoder:(NSCoder*)coder
{
// Temporarily change delegate
[super setDelegate:secondaryDelegate];
[super encodeWithCoder:coder];
[coder encodeObject:[self color] forKey:@"BWSVColor"];
[coder encodeBool:[self colorIsEnabled] forKey:@"BWSVColorIsEnabled"];
[coder encodeObject:[self minValues] forKey:@"BWSVMinValues"];
[coder encodeObject:[self maxValues] forKey:@"BWSVMaxValues"];
[coder encodeObject:[self minUnits] forKey:@"BWSVMinUnits"];
[coder encodeObject:[self maxUnits] forKey:@"BWSVMaxUnits"];
[coder encodeInt:[self collapsiblePopupSelection] forKey:@"BWSVCollapsiblePopupSelection"];
[coder encodeBool:[self dividerCanCollapse] forKey:@"BWSVDividerCanCollapse"];
// Set delegate back
[self setDelegate:[super delegate]];
[super setDelegate:self];
}
- (void)awakeFromNib
{
scaleFactor = [[NSScreen mainScreen] userSpaceScaleFactor];
}
- (void)drawDividerInRect:(NSRect)aRect
{
if ([self dividerThickness] < 1.01)
{
if (colorIsEnabled && color != nil)
[color drawSwatchInRect:aRect];
else
[super drawDividerInRect:aRect];
}
else
{
[self drawGradientDividerInRect:aRect];
}
}
- (void)drawGradientDividerInRect:(NSRect)aRect
{
aRect = [self centerScanRect:aRect];
if ([self isVertical])
{
// Draw gradient
NSRect gradRect = NSMakeRect(aRect.origin.x + 1 / scaleFactor,aRect.origin.y,aRect.size.width - 1 / scaleFactor,aRect.size.height);
[gradient drawInRect:gradRect angle:0];
// Draw left and right borders
[borderColor bwDrawPixelThickLineAtPosition:0 withInset:0 inRect:aRect inView:self horizontal:NO flip:NO];
[borderColor bwDrawPixelThickLineAtPosition:0 withInset:0 inRect:aRect inView:self horizontal:NO flip:YES];
}
else
{
// Draw gradient
NSRect gradRect = NSMakeRect(aRect.origin.x,aRect.origin.y + 1 / scaleFactor,aRect.size.width,aRect.size.height - 1 / scaleFactor);
[gradient drawInRect:gradRect angle:90];
// Draw top and bottom borders
[borderColor bwDrawPixelThickLineAtPosition:0 withInset:0 inRect:aRect inView:self horizontal:YES flip:NO];
[borderColor bwDrawPixelThickLineAtPosition:0 withInset:0 inRect:aRect inView:self horizontal:YES flip:YES];
}
[self drawDimpleInRect:aRect];
}
- (void)drawDimpleInRect:(NSRect)aRect
{
float startY = aRect.origin.y + roundf((aRect.size.height / 2) - (dimpleDimension / 2));
float startX = aRect.origin.x + roundf((aRect.size.width / 2) - (dimpleDimension / 2));
NSRect destRect = NSMakeRect(startX,startY,dimpleDimension,dimpleDimension);
// Draw at pixel bounds
destRect = [self convertRectToBase:destRect];
destRect.origin.x = floor(destRect.origin.x);
double param, fractPart, intPart;
param = destRect.origin.y;
fractPart = modf(param, &intPart);
if (fractPart < 0.99)
destRect.origin.y = floor(destRect.origin.y);
destRect = [self convertRectFromBase:destRect];
if (scaleFactor == 1)
{
NSRect dimpleRect = NSMakeRect(0,0,dimpleDimension,dimpleDimension);
[dimpleImageBitmap drawInRect:destRect fromRect:dimpleRect operation:NSCompositeSourceOver fraction:1];
}
else
{
NSRect dimpleRect = NSMakeRect(0,0,[dimpleImageVector size].width,[dimpleImageVector size].height);
[dimpleImageVector drawInRect:destRect fromRect:dimpleRect operation:NSCompositeSourceOver fraction:1];
}
}
- (void)setDelegate:(id)anObj
{
if (secondaryDelegate != self)
secondaryDelegate = anObj;
else
secondaryDelegate = nil;
}
- (BOOL)subviewIsCollapsible:(NSView *)subview;
{
// check if this is the collapsible subview
int subviewIndex = [[self subviews] indexOfObject:subview];
BOOL isCollapsibleSubview = (([self collapsiblePopupSelection] == 1 && subviewIndex == 0) || ([self collapsiblePopupSelection] == 2 && subviewIndex == [[self subviews] count] - 1));
return isCollapsibleSubview;
}
- (BOOL)subviewIsCollapsed:(NSView *)subview;
{
BOOL isCollapsibleSubview = [self subviewIsCollapsible:subview];
return [super isSubviewCollapsed:subview] || (isCollapsibleSubview && collapsibleSubviewCollapsed);
}
- (BOOL)collapsibleSubviewIsCollapsed;
{
return [self subviewIsCollapsed:[self collapsibleSubview]];
}
- (int)collapsibleSubviewIndex;
{
switch ([self collapsiblePopupSelection]) {
case 1:
return 0;
break;
case 2:
return [[self subviews] count] - 1;
break;
default:
return -1;
break;
}
}
- (NSView *)collapsibleSubview;
{
int index = [self collapsibleSubviewIndex];
if (index >= 0)
return [[self subviews] objectAtIndex:index];
else
return nil;
}
- (BOOL)hasCollapsibleSubview;
{
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)])
return NO;
return [self collapsiblePopupSelection] != 0;
}
// This is done to support the use of Core Animation to collapse subviews
- (void)adjustSubviews
{
[super adjustSubviews];
[[self window] invalidateCursorRectsForView:self];
}
- (void)setCollapsibleSubviewCollapsedHelper:(NSNumber *)flag
{
[self setCollapsibleSubviewCollapsed:[flag boolValue]];
}
- (void)animationEnded
{
isAnimating = NO;
}
- (float)animationDuration
{
if ([NSEvent bwShiftKeyIsDown])
return 2.0;
return 0.25;
}
- (BOOL)hasCollapsibleDivider
{
if ([self hasCollapsibleSubview] && (dividerCanCollapse || [self dividerThickness] < 1.01))
return YES;
return NO;
}
- (int)collapsibleDividerIndex
{
if ([self hasCollapsibleDivider])
{
if ([self collapsiblePopupSelection] == 1)
return 0;
else if ([self collapsiblePopupSelection] == 2)
return [self subviews].count - 2;
}
return -1;
}
- (void)setCollapsibleSubviewCollapsed:(BOOL)flag
{
collapsibleSubviewCollapsed = flag;
if (flag)
[[self toggleCollapseButton] setState:0];
else
[[self toggleCollapseButton] setState:1];
}
- (void)setMinSizeForCollapsibleSubview:(NSNumber *)minSize
{
if ([self hasCollapsibleSubview])
{
NSMutableDictionary *tempMinValues = [[[self minValues] mutableCopy] autorelease];
[tempMinValues setObject:minSize forKey:[NSNumber numberWithInt:[[self subviews] indexOfObject:[self collapsibleSubview]]]];
[self setMinValues:tempMinValues];
}
}
- (void)removeMinSizeForCollapsibleSubview
{
if ([self hasCollapsibleSubview])
{
NSMutableDictionary *tempMinValues = [[[self minValues] mutableCopy] autorelease];
[tempMinValues removeObjectForKey:[NSNumber numberWithInt:[[self subviews] indexOfObject:[self collapsibleSubview]]]];
[self setMinValues:tempMinValues];
}
}
- (void)restoreAutoresizesSubviews:(NSNumber *)flag
{
[[self collapsibleSubview] setAutoresizesSubviews:[flag boolValue]];
}
- (IBAction)toggleCollapse:(id)sender
{
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)])
return;
if ([self hasCollapsibleSubview] == NO || [self collapsibleSubview] == nil)
return;
if (isAnimating)
return;
// Check to see if the collapsible subview has a minimum width/height and record it.
// We'll later remove the min size temporarily while animating and then restore it.
BOOL hasMinSize = NO;
NSNumber *minSize = [minValues objectForKey:[NSNumber numberWithInt:[[self subviews] indexOfObject:[self collapsibleSubview]]]];
minSize = [[minSize copy] autorelease];
if (minSize != nil || [minSize intValue] != 0)
hasMinSize = YES;
// Get a reference to the button and modify its behavior
if ([self toggleCollapseButton] == nil)
{
[self setToggleCollapseButton:sender];
[[toggleCollapseButton cell] setHighlightsBy:NSPushInCellMask];
[[toggleCollapseButton cell] setShowsStateBy:NSContentsCellMask];
}
// Temporary: For simplicty, there should only be 1 subview other than the collapsible subview that's resizable for the collapse to happen
NSView *resizableSubview = nil;
for (NSView *subview in [self subviews])
{
if ([self subviewIsResizable:subview] && subview != [self collapsibleSubview])
{
resizableSubview = subview;
}
}
if (resizableSubview == nil)
return;
// Record whether the collapsible subview is set to autoresize subviews so we can restore it after the animation
BOOL autoresizesSubviews = [[self collapsibleSubview] autoresizesSubviews];
// Turn off autoresizesSubviews on the collapsible subview
[[self collapsibleSubview] setAutoresizesSubviews:NO];
// Get the thickness of the collapsible divider. If the divider cannot collapse, we set it to 0 so it doesn't affect our calculations.
float collapsibleDividerThickness = [self dividerThickness];
if ([self hasCollapsibleDivider] == NO)
collapsibleDividerThickness = 0;
// Collapsing by dragging the divider sets the view to be hidden, so unhide it
[[self collapsibleSubview] setHidden:NO];
if ([self isVertical])
{
float constantHeight = [self collapsibleSubview].frame.size.height;
if ([self collapsibleSubviewCollapsed] == NO)
{
uncollapsedSize = [self collapsibleSubview].frame.size.width;
if (hasMinSize)
[self removeMinSizeForCollapsibleSubview];
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:([self animationDuration])];
[[[self collapsibleSubview] animator] setFrameSize:NSMakeSize(0.0, constantHeight)];
[[resizableSubview animator] setFrameSize:NSMakeSize(resizableSubview.frame.size.width + uncollapsedSize + collapsibleDividerThickness, constantHeight)];
[NSAnimationContext endGrouping];
if (hasMinSize)
[self performSelector:@selector(setMinSizeForCollapsibleSubview:) withObject:minSize afterDelay:[self animationDuration]];
[self performSelector:@selector(setCollapsibleSubviewCollapsedHelper:) withObject:[NSNumber numberWithBool:YES] afterDelay:[self animationDuration]];
}
else
{
if (hasMinSize) {
[self removeMinSizeForCollapsibleSubview];
if (uncollapsedSize < [minSize floatValue]) {
uncollapsedSize = [minSize floatValue];
}
}
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:([self animationDuration])];
[[[self collapsibleSubview] animator] setFrameSize:NSMakeSize(uncollapsedSize, constantHeight)];
[[resizableSubview animator] setFrameSize:NSMakeSize(resizableSubview.frame.size.width - uncollapsedSize - collapsibleDividerThickness, constantHeight)];
[NSAnimationContext endGrouping];
if (hasMinSize)
[self performSelector:@selector(setMinSizeForCollapsibleSubview:) withObject:minSize afterDelay:[self animationDuration] + 0.1];
[self setCollapsibleSubviewCollapsed:NO];
}
}
else
{
float constantWidth = [self collapsibleSubview].frame.size.width;
if ([self collapsibleSubviewCollapsed] == NO)
{
uncollapsedSize = [self collapsibleSubview].frame.size.height;
if (hasMinSize)
[self removeMinSizeForCollapsibleSubview];
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:([self animationDuration])];
[[[self collapsibleSubview] animator] setFrameSize:NSMakeSize(constantWidth, 0.0)];
[[resizableSubview animator] setFrameSize:NSMakeSize(constantWidth, resizableSubview.frame.size.height + uncollapsedSize + collapsibleDividerThickness)];
[NSAnimationContext endGrouping];
if (hasMinSize)
[self performSelector:@selector(setMinSizeForCollapsibleSubview:) withObject:minSize afterDelay:[self animationDuration]];
[self performSelector:@selector(setCollapsibleSubviewCollapsedHelper:) withObject:[NSNumber numberWithBool:YES] afterDelay:[self animationDuration]];
}
else
{
if (hasMinSize) {
[self removeMinSizeForCollapsibleSubview];
if (uncollapsedSize < [minSize floatValue]) {
uncollapsedSize = [minSize floatValue];
}
}
[NSAnimationContext beginGrouping];
[[NSAnimationContext currentContext] setDuration:([self animationDuration])];
[[[self collapsibleSubview] animator] setFrameSize:NSMakeSize(constantWidth, uncollapsedSize)];
[[resizableSubview animator] setFrameSize:NSMakeSize(constantWidth, resizableSubview.frame.size.height - uncollapsedSize - collapsibleDividerThickness)];
[NSAnimationContext endGrouping];
if (hasMinSize)
[self performSelector:@selector(setMinSizeForCollapsibleSubview:) withObject:minSize afterDelay:[self animationDuration]];
[self setCollapsibleSubviewCollapsed:NO];
}
}
isAnimating = YES;
[self performSelector:@selector(animationEnded) withObject:nil afterDelay:[self animationDuration] + 0.1];
[self performSelector:@selector(restoreAutoresizesSubviews:) withObject:[NSNumber numberWithBool:autoresizesSubviews] afterDelay:[self animationDuration] + 0.1];
[self performSelector:@selector(resizeAndAdjustSubviews) withObject:nil afterDelay:[self animationDuration] + 0.1];
}
#pragma mark Mouse Tracking Methods
- (void)mouseDown:(NSEvent *)theEvent
{
// Set the uncollapsed size whenever the split view is clicked or a drag has began. This lets us uncollapse to the size of the subview before the drag-collapse.
if ([self hasCollapsibleSubview])
{
CGFloat collapsibleViewSize = [self isVertical] ? [self collapsibleSubview].frame.size.width : [self collapsibleSubview].frame.size.height;
if (!isAnimating && collapsibleViewSize > 0)
uncollapsedSize = collapsibleViewSize;
}
[super mouseDown:theEvent];
}
#pragma mark NSSplitView Delegate Methods
- (BOOL)splitView:(NSSplitView *)splitView shouldHideDividerAtIndex:(NSInteger)dividerIndex
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:shouldHideDividerAtIndex:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:splitView shouldHideDividerAtIndex:dividerIndex];
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)] == NO)
{
if ([self hasCollapsibleDivider] && [self collapsibleDividerIndex] == dividerIndex)
{
[self setDividerCanCollapse:YES];
return YES;
}
}
return NO;
}
- (NSRect)splitView:(NSSplitView *)splitView additionalEffectiveRectOfDividerAtIndex:(NSInteger)dividerIndex
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:additionalEffectiveRectOfDividerAtIndex:)])
return [secondaryDelegate splitView:splitView additionalEffectiveRectOfDividerAtIndex:dividerIndex];
return NSZeroRect;
}
- (BOOL)splitView:(NSSplitView *)sender canCollapseSubview:(NSView *)subview
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:canCollapseSubview:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:sender canCollapseSubview:subview];
int subviewIndex = [[self subviews] indexOfObject:subview];
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)] == NO)
{
if ([self collapsiblePopupSelection] == 1 && subviewIndex == 0)
return YES;
else if ([self collapsiblePopupSelection] == 2 && subviewIndex == [[self subviews] count] - 1)
return YES;
}
return NO;
}
- (BOOL)splitView:(NSSplitView *)splitView shouldCollapseSubview:(NSView *)subview forDoubleClickOnDividerAtIndex:(NSInteger)dividerIndex
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:shouldCollapseSubview:forDoubleClickOnDividerAtIndex:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:splitView shouldCollapseSubview:subview forDoubleClickOnDividerAtIndex:dividerIndex];
int subviewIndex = [[self subviews] indexOfObject:subview];
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)] == NO)
{
if (([self collapsiblePopupSelection] == 1 && subviewIndex == 0 && dividerIndex == 0) ||
([self collapsiblePopupSelection] == 2 && subviewIndex == [[self subviews] count] - 1 && dividerIndex == [[splitView subviews] count] - 2))
{
if ([self isVertical])
uncollapsedSize = [self collapsibleSubview].frame.size.width;
else
uncollapsedSize = [self collapsibleSubview].frame.size.height;
[self setCollapsibleSubviewCollapsed:YES];
// Cause the collapse ourselves by calling the resize method
[self resizeAndAdjustSubviews];
[self setNeedsDisplay:YES];
// Since we manually did the resize above, we pretend that we don't want to collapse
return NO;
}
}
return NO;
}
- (CGFloat)splitView:(NSSplitView *)sender constrainMaxCoordinate:(CGFloat)proposedMax ofSubviewAt:(NSInteger)offset
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:constrainMaxCoordinate:ofSubviewAt:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:sender constrainMaxCoordinate:proposedMax ofSubviewAt:offset];
// Max coordinate depends on max of subview offset, and the min of subview offset + 1
CGFloat newMaxFromThisSubview = proposedMax;
CGFloat newMaxFromNextSubview = proposedMax;
// Max from this subview
CGFloat maxValue = [self subviewMaximumSize:offset];
if (maxValue != FLT_MAX)
{
NSView *subview = [[self subviews] objectAtIndex:offset];
CGFloat originCoord = [self isVertical] ? [subview frame].origin.x : [subview frame].origin.y;
newMaxFromThisSubview = originCoord + maxValue;
}
// Max from the next subview
int nextOffset = offset + 1;
if ([[self subviews] count] > nextOffset)
{
CGFloat minValue = [self subviewMinimumSize:nextOffset];
if (minValue != 0)
{
NSView *subview = [[self subviews] objectAtIndex:nextOffset];
CGFloat endCoord = [self isVertical] ? [subview frame].origin.x + [subview frame].size.width : [subview frame].origin.y + [subview frame].size.height;
newMaxFromNextSubview = endCoord - minValue - [self dividerThickness];
// This could cause trouble when over constrained (TODO)
}
}
CGFloat newMax = fminf(newMaxFromThisSubview, newMaxFromNextSubview);
if (newMax < proposedMax)
return newMax;
return proposedMax;
}
- (CGFloat)splitView:(NSSplitView *)sender constrainMinCoordinate:(CGFloat)proposedMin ofSubviewAt:(NSInteger)offset
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:constrainMinCoordinate:ofSubviewAt:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:sender constrainMinCoordinate:proposedMin ofSubviewAt:offset];
// Min coordinate depends on min of subview offset and the max of subview offset + 1
CGFloat newMinFromThisSubview = proposedMin;
CGFloat newMaxFromNextSubview = proposedMin;
// Min from this subview
CGFloat minValue = [self subviewMinimumSize:offset];
if (minValue != 0)
{
NSView *subview = [[self subviews] objectAtIndex:offset];
CGFloat originCoord = [self isVertical] ? [subview frame].origin.x : [subview frame].origin.y;
newMinFromThisSubview = originCoord + minValue;
}
// Min from the next subview
int nextOffset = offset + 1;
if ([[self subviews] count] > nextOffset)
{
CGFloat maxValue = [self subviewMaximumSize:nextOffset];
if (maxValue != FLT_MAX)
{
NSView *subview = [[self subviews] objectAtIndex:nextOffset];
CGFloat endCoord = [self isVertical] ? [subview frame].origin.x + [subview frame].size.width : [subview frame].origin.y + [subview frame].size.height;
newMaxFromNextSubview = endCoord - maxValue - [self dividerThickness];
// This could cause trouble when over constrained (TODO)
}
}
CGFloat newMin = fmaxf(newMinFromThisSubview, newMaxFromNextSubview);
if (newMin > proposedMin)
return newMin;
return proposedMin;
}
- (CGFloat)splitView:(NSSplitView *)sender constrainSplitPosition:(CGFloat)proposedPosition ofSubviewAt:(NSInteger)offset
{
[self clearPreferredProportionsAndSizes];
if ([self respondsToSelector:@selector(ibDidAddToDesignableDocument:)])
return proposedPosition;
if ([secondaryDelegate respondsToSelector:@selector(splitView:constrainSplitPosition:ofSubviewAt:)] &&
[secondaryDelegate isKindOfClass:[BWAnchoredButtonBar class]] == NO)
return [secondaryDelegate splitView:sender constrainSplitPosition:proposedPosition ofSubviewAt:offset];
return proposedPosition;
}
- (NSRect)splitView:(NSSplitView *)splitView effectiveRect:(NSRect)proposedEffectiveRect forDrawnRect:(NSRect)drawnRect ofDividerAtIndex:(NSInteger)dividerIndex
{
if ([secondaryDelegate respondsToSelector:@selector(splitView:effectiveRect:forDrawnRect:ofDividerAtIndex:)])
return [secondaryDelegate splitView:splitView effectiveRect:proposedEffectiveRect forDrawnRect:drawnRect ofDividerAtIndex:dividerIndex];
return proposedEffectiveRect;
}
- (void)splitViewDidResizeSubviews:(NSNotification *)aNotification
{
if (collapsibleSubviewCollapsed && ([self isVertical] ? [[self collapsibleSubview] frame].size.width > 0 : [[self collapsibleSubview] frame].size.height > 0))
{
[self setCollapsibleSubviewCollapsed:NO];
[self resizeAndAdjustSubviews];
}
else if (!collapsibleSubviewCollapsed && ([self isVertical] ? [[self collapsibleSubview] frame].size.width < 0.1 : [[self collapsibleSubview] frame].size.height < 0.1))
{
[self setCollapsibleSubviewCollapsed:YES];
[self resizeAndAdjustSubviews];
}
else if ([self collapsibleSubviewIsCollapsed])
{
[self resizeAndAdjustSubviews];
}
[self setNeedsDisplay:YES];
if ([secondaryDelegate respondsToSelector:@selector(splitViewDidResizeSubviews:)])
[secondaryDelegate splitViewDidResizeSubviews:aNotification];
}
- (void)splitViewWillResizeSubviews:(NSNotification *)aNotification
{
if ([secondaryDelegate respondsToSelector:@selector(splitViewWillResizeSubviews:)])
[secondaryDelegate splitViewWillResizeSubviews:aNotification];
}
#pragma mark - Resize Subviews Delegate Method and Helper Methods
- (int)resizableSubviews
{
int resizableSubviews = 0;
for (NSView *subview in [self subviews])
{
if ([self subviewIsResizable:subview])
resizableSubviews++;
}
return resizableSubviews;
}
- (BOOL)subviewIsResizable:(NSView *)subview
{
if ([self isVertical] && [subview autoresizingMask] & NSViewWidthSizable)
return YES;
if (![self isVertical] && [subview autoresizingMask] & NSViewHeightSizable)
return YES;
return NO;
}
- (CGFloat)subviewMinimumSize:(int)subviewIndex;
{
NSNumber *minNum = [minValues objectForKey:[NSNumber numberWithInt:subviewIndex]];
if (!minNum)
return 0;
int units = 0;
NSNumber *unitsNum = [minUnits objectForKey:[NSNumber numberWithInt:subviewIndex]];
if (unitsNum)
units = [unitsNum intValue];
CGFloat min = [minNum floatValue];
switch (units)
{
case 1:
{
// Percent
CGFloat dividerThicknessTotal = [self dividerThickness] * ([[self subviews] count] - 1);
CGFloat totalSize = [self isVertical] ? [self frame].size.width : [self frame].size.height;
totalSize -= dividerThicknessTotal;
return roundf((min / 100.0) * totalSize);
break;
}
case 0:
default:
{
// Points
return min;
break;
}
}
}
- (CGFloat)subviewMaximumSize:(int)subviewIndex;
{
NSNumber *maxNum = [maxValues objectForKey:[NSNumber numberWithInt:subviewIndex]];
if (!maxNum)
return FLT_MAX;
int units = 0;
NSNumber *unitsNum = [maxUnits objectForKey:[NSNumber numberWithInt:subviewIndex]];
if (unitsNum)
units = [unitsNum intValue];
CGFloat max = [maxNum floatValue];
switch (units)
{
case 1:
{
// Percent
CGFloat dividerThicknessTotal = [self dividerThickness] * ([[self subviews] count] - 1);
CGFloat totalSize = [self isVertical] ? [self frame].size.width : [self frame].size.height;
totalSize -= dividerThicknessTotal;
return roundf((max / 100.0) * totalSize);
break;
}
case 0:
default:
{
// Points
return max;
break;
}
}
}
// PREFERRED PROPORTIONS AND SIZES
//
// Preferred proportions (for resizable)
// Need to store resizable subviews preferred proportions for calculating new sizes
//
// Preferred sizes (for non-resizable)
// If a non-resizable subview is ever forced larger or smaller than it prefers, we need to know it's preferred size
//
// Need to recalculate both of the above whenever a divider is moved, or a subview is added/removed or changed between resizable/non-resizable
- (void)recalculatePreferredProportionsAndSizes;
{
NSMutableArray *stateArray = [NSMutableArray arrayWithCapacity:[[self subviews] count]];
NSMutableDictionary *preferredProportions = [NSMutableDictionary dictionary];
NSMutableDictionary *preferredSizes = [NSMutableDictionary dictionary];
// Total is only the sum of resizable subviews
CGFloat resizableTotal = 0;
// Calculate resizable total
for (NSView *subview in [self subviews])
{
if ([self subviewIsResizable:subview])
resizableTotal += [self isVertical] ? [subview frame].size.width : [subview frame].size.height;
}
// Calculate resizable preferred propotions and set non-resizable preferred sizes
for (NSView *subview in [self subviews])
{
int index = [[self subviews] indexOfObject:subview];
if ([self subviewIsResizable:subview])
{
CGFloat size = [self isVertical] ? [subview frame].size.width : [subview frame].size.height;
CGFloat proportion = (resizableTotal > 0) ? (size / resizableTotal) : 0;
[preferredProportions setObject:[NSNumber numberWithFloat:proportion]
forKey:[NSNumber numberWithInt:index]];
[stateArray addObject:[NSNumber numberWithBool:YES]];
}
else
{
CGFloat size = [self isVertical] ? [subview frame].size.width : [subview frame].size.height;
[preferredSizes setObject:[NSNumber numberWithFloat:size]
forKey:[NSNumber numberWithInt:index]];
[stateArray addObject:[NSNumber numberWithBool:NO]];
}
}
[self setResizableSubviewPreferredProportion:preferredProportions];
[self setNonresizableSubviewPreferredSize:preferredSizes];
if (RESIZE_DEBUG_LOGS) NSLog(@"resizableSubviewPreferredProportion: %@", resizableSubviewPreferredProportion);
if (RESIZE_DEBUG_LOGS) NSLog(@"nonresizableSubviewPreferredSize: %@", nonresizableSubviewPreferredSize);
// Remember state to know when to recalculate
[self setStateForLastPreferredCalculations:stateArray];
if (RESIZE_DEBUG_LOGS) NSLog(@"stateForLastPreferredCalculations: %@", stateForLastPreferredCalculations);
}
// Checks if the number or type of subviews has changed since we last recalculated
- (BOOL)validatePreferredProportionsAndSizes;
{
if (RESIZE_DEBUG_LOGS) NSLog(@"validating preferred proportions and sizes");
// Check if we even have saved proportions and sizes
if (![self resizableSubviewPreferredProportion] || ![self nonresizableSubviewPreferredSize])
return NO;
// Check if number of items has changed
if ([[self subviews] count] != [[self stateForLastPreferredCalculations] count])
return NO;
// Check if any of the subviews have changed between resizable and non-resizable
for (NSView *subview in [self subviews])
{
int index = [[self subviews] indexOfObject:subview];
if ([self subviewIsResizable:subview] != [[[self stateForLastPreferredCalculations] objectAtIndex:index] boolValue])
return NO;
}
return YES;
}
- (void)correctCollapsiblePreferredProportionOrSize;
{
// TODO: Assuming that the collapsible subview does not change between resizable and non-resizable while collapsed
if (![self hasCollapsibleSubview])
return;
NSMutableDictionary *preferredProportions = [[[self resizableSubviewPreferredProportion] mutableCopy] autorelease];
NSMutableDictionary *preferredSizes = [[[self nonresizableSubviewPreferredSize] mutableCopy] autorelease];
NSNumber *key = [NSNumber numberWithInt:[self collapsibleSubviewIndex]];
NSView *subview = [self collapsibleSubview];
// If the collapsible subview is collapsed, we put aside its preferred propotion/size
if ([self subviewIsCollapsed:subview])
{
BOOL resizable = [self subviewIsResizable:subview];
if (!resizable)
{
NSNumber *sizeNum = [preferredSizes objectForKey:key];
if (sizeNum)
{
if (RESIZE_DEBUG_LOGS) NSLog(@"removing collapsible view from preferred sizes");
// TODO: Save the size for later
// Remove from preferred sizes
[preferredSizes removeObjectForKey:key];
}
}
else
{
NSNumber *proportionNum = [preferredProportions objectForKey:key];
if (proportionNum)
{
if (RESIZE_DEBUG_LOGS) NSLog(@"removing collapsible view from preferred proportions");
CGFloat proportion = [proportionNum floatValue];
// TODO: Save the proportion for later
// Remove from preferred proportions
[preferredProportions removeObjectForKey:key];
// Recalculate other proportions
CGFloat proportionTotal = 1.0 - proportion;
if (proportionTotal > 0)
{
for (NSNumber *pkey in [preferredProportions allKeys])
{
CGFloat oldProportion = [[preferredProportions objectForKey:pkey] floatValue];
CGFloat newPropotion = oldProportion / proportionTotal;
[preferredProportions setObject:[NSNumber numberWithFloat:newPropotion] forKey:pkey];
}
}
}
}
[self setResizableSubviewPreferredProportion:preferredProportions];
[self setNonresizableSubviewPreferredSize:preferredSizes];
}
else // Otherwise, we reintegrate its preferred proportion/size
{
[self clearPreferredProportionsAndSizes];
[self recalculatePreferredProportionsAndSizes];
}
}
- (void)validateAndCalculatePreferredProportionsAndSizes;
{
if (![self validatePreferredProportionsAndSizes])
[self recalculatePreferredProportionsAndSizes];
// Need to make sure the collapsed subviews preferred size/proportion is in the right place
[self correctCollapsiblePreferredProportionOrSize];
}
- (void)clearPreferredProportionsAndSizes;
{
if (RESIZE_DEBUG_LOGS) NSLog(@"clearing preferred proportions and sizes");
[self setResizableSubviewPreferredProportion:nil];
[self setNonresizableSubviewPreferredSize:nil];
}