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MUPhotoView.m
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MUPhotoView.m
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//
// MUPhotoView
//
// Copyright (c) 2006 Blake Seely
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
// and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
// * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
// * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
// OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// * You include a link to http://www.blakeseely.com in your final product.
//
// Version History:
//
// Version 1.0 - April 17, 2006 - Initial Release
// Version 1.1 - April 29, 2006 - Photo removal support, Added support for reduced-size drawing during live resize
// Version 1.2 - September 24, 2006 - Updated selection behavior, Changed to MIT license, Fixed issue where no images would show, fixed autoscroll
// Modified for the iMedia project http://imedia.karelia.com/
#import "MUPhotoView.h"
NSString *ShowCaptionChangedNotification = @"ShowCaptionChangedNotification";
@implementation MUPhotoView
#pragma mark -
// Initializers and Dealloc
#pragma mark Initializers and Dealloc
+ (void)initialize
{
if ( self == [MUPhotoView class] )
{
// Only do some work when not called because one of our subclasses does not implement +initialize
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSDictionary *defaultsBase = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithFloat:75.0], @"MUPhotoSize", nil];
[defaults registerDefaults:defaultsBase];
[self exposeBinding:@"photosArray"];
[self exposeBinding:@"selectedPhotoIndexes"];
[self exposeBinding:@"backgroundColor"];
[self exposeBinding:@"photoSize"];
[self exposeBinding:@"useShadowBorder"];
[self exposeBinding:@"useOutlineBorder"];
[self exposeBinding:@"useShadowSelection"];
[self exposeBinding:@"useOutlineSelection"];
[self setKeys:[NSArray arrayWithObject:@"backgroundColor"] triggerChangeNotificationsForDependentKey:@"shadowBoxColor"];
[pool release];
}
}
- (id)initWithFrame:(NSRect)frameRect
{
if ((self = [super initWithFrame:frameRect]) != nil) {
delegate = nil;
sendsLiveSelectionUpdates = NO;
useHighQualityResize = NO;
photosArray = nil;
photosFastArray = nil;
selectedPhotoIndexes = nil;
dragSelectedPhotoIndexes = [[NSMutableIndexSet alloc] init];
[self setBackgroundColor:[NSColor grayColor]];
useShadowBorder = YES;
useOutlineBorder = YES;
borderShadow = [[NSShadow alloc] init];
[borderShadow setShadowColor:[NSColor colorWithCalibratedWhite:0. alpha:.5]];
[borderShadow setShadowOffset:NSMakeSize(0.0, -2.0)];
[borderShadow setShadowBlurRadius:4.0];
noShadow = [[NSShadow alloc] init];
[noShadow setShadowOffset:NSMakeSize(0,0)];
[noShadow setShadowBlurRadius:0.0];
[self setBorderOutlineColor:[NSColor colorWithCalibratedWhite:0.5 alpha:1.0]];
useShadowSelection = NO;
useBorderSelection = YES;
[self setSelectionBorderColor:[NSColor selectedControlColor]];
selectionBorderWidth = 3.0;
[self setShadowBoxColor:[NSColor colorWithCalibratedWhite:0.0 alpha:0.5]];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
photoSize = [defaults floatForKey:@"MUPhotoSize"];
photoVerticalSpacing = 25.0;
photoHorizontalSpacing = 25.0;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(resetCaptionShowing:)
name:ShowCaptionChangedNotification
object:nil];
photoResizeTimer = nil;
photoResizeTime = [[NSDate date] retain];
isDonePhotoResizing = YES;
}
return self;
}
- (void)dealloc
{
[dragSelectedPhotoIndexes release], dragSelectedPhotoIndexes = nil;
[photoResizeTime release], photoResizeTime = nil;
[borderShadow release], borderShadow = nil;
[noShadow release], noShadow = nil;
[self setBorderOutlineColor:nil];
[self setSelectionBorderColor:nil];
[self setShadowBoxColor:nil];
[self setBackgroundColor:nil];
[self setPhotosArray:nil];
[self setSelectedPhotoIndexes:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super dealloc];
}
#pragma mark -
// Drawing Methods
#pragma mark Drawing Methods
- (BOOL)isOpaque
{
return YES;
}
- (BOOL)isFlipped
{
return YES;
}
static NSDictionary *sTitleAttributes = nil;
- (void)drawRect:(NSRect)rect
{
[self removeAllToolTips];
// draw the background color
[[self backgroundColor] set];
[NSBezierPath fillRect:rect];
// get the number of photos
unsigned photoCount = [self photoCount];
if (0 == photoCount)
return;
// update internal grid size, adjust height based on the new grid size
// because I may not find out that the photos array has changed until I draw and read the photos from the delegate, this call has to stay here
[self updateGridAndFrame];
// any other setup
if (useHighQualityResize) {
[[NSGraphicsContext currentContext] setImageInterpolation:NSImageInterpolationHigh];
}
/**** BEGIN Drawing Photos ****/
NSRange rangeToDraw = [self photoIndexRangeForRect:rect]; // adjusts for photoCount if the rect goes outside my range
unsigned thisPhotoIndex;
unsigned lastIndex = rangeToDraw.location + rangeToDraw.length;
// Our version of photoIndexRangeForRect: returns one item more in the range than the MUPhotoView 1.2 version. Hence we also
// must do one less iteration so here we do < instead of <=
for (thisPhotoIndex = rangeToDraw.location; thisPhotoIndex < lastIndex; thisPhotoIndex++) {
// Get the image at the current index - a gray bezier anywhere in the view means it asked for an image, but got nil for that index
BOOL allowShadows = YES;
NSImage* photo = [self currentDisplayImageAtIndex:thisPhotoIndex allowsShadows:&allowShadows];
// set it to draw correctly in a flipped view (will restore it after drawing)
BOOL isFlipped = [photo isFlipped];
[photo setFlipped:YES];
NSString* title = [self titleAtIndex:thisPhotoIndex];
NSRect gridRect = NSZeroRect;
NSRect photoRect = NSZeroRect;
NSRect titleRect = NSZeroRect;
// Note this will automatically cause the photo to scale as necessary
[self getDrawingRectsAtIndex:thisPhotoIndex withPhoto:photo withTitle:title outGridRect:&gridRect outPhotoRect:&photoRect outTitleRect:&titleRect];
//**** BEGIN Background Drawing - any drawing that technically goes under the image ****/
#if 0 // Debugging Aid - Enable this to fill each gridRect with a different gray
[[NSColor colorWithCalibratedWhite:(float)(thisPhotoIndex % 5) / 4.0 alpha:0.8] set];
[NSBezierPath fillRect:gridRect];
#endif
// kSelectionStyleShadowBox draws a semi-transparent rounded rect behind/around the image
if ([self isPhotoSelectedAtIndex:thisPhotoIndex] && [self useShadowSelection]) {
NSBezierPath *shadowBoxPath = [self shadowBoxPathForRect:gridRect];
[shadowBoxColor set];
[shadowBoxPath fill];
}
//**** END Background Drawing ****/
// kBorderStyleShadow - set the appropriate shadow
// Don't draw the shadow if we have a border and the item is selected, or if shadows are disabled for this image
if ([self useShadowBorder] && (allowShadows == YES) &&
([self useBorderSelection] == NO || [[self selectionIndexes] containsIndex:thisPhotoIndex] == NO)) {
[borderShadow set];
}
// draw the current photo
NSRect imageRect = NSMakeRect(0, 0, [photo size].width, [photo size].height);
[photo drawInRect:photoRect fromRect:imageRect operation:NSCompositeSourceOver fraction:1.0];
// register the tooltip area
[self addToolTipRect:photoRect owner:self userData:nil];
// restore the photo's flipped status
[photo setFlipped:isFlipped];
// kBorderStyleShadow - remove the shadow after drawing the image
[noShadow set];
//**** BEGIN Foreground Drawing - includes outline borders, selection rectangles ****/
if ([self isPhotoSelectedAtIndex:thisPhotoIndex] && [self useBorderSelection]) {
NSBezierPath *selectionBorder = [NSBezierPath bezierPathWithRect:NSInsetRect(photoRect,-3.0,-3.0)];
[selectionBorder setLineWidth:[self selectionBorderWidth]];
[[self selectionBorderColor] set];
[selectionBorder stroke];
} else if ([self useOutlineBorder]) {
photoRect = NSInsetRect(photoRect,0.5,0.5); // line up the 1px border so it completely fills a single row of pixels
NSBezierPath *outlinePath = [NSBezierPath bezierPathWithRect:photoRect];
[outlinePath setLineWidth:1.0];
[borderOutlineColor set];
[outlinePath stroke];
}
//**** END Foreground Drawing ****//
// draw title
if (title)
{
// center rect
NSMutableString *s1 = [NSMutableString stringWithString:[title substringToIndex:[title length] / 2]];
NSMutableString *s2 = [NSMutableString stringWithString:[title substringFromIndex:[title length] / 2]];
NSSize titleSize = [self sizeOfTitleWithCurrentAttributes:title];
while (titleSize.width > NSWidth(titleRect))
{
[s1 deleteCharactersInRange:NSMakeRange([s1 length] - 1, 1)];
[s2 deleteCharactersInRange:NSMakeRange(0, 1)];
title = [NSString stringWithFormat:@"%@...%@", s1, s2];
titleSize = [title sizeWithAttributes:sTitleAttributes];
}
titleRect.origin.x = NSMidX(titleRect) - (titleSize.width / 2);
titleRect.size.width = titleSize.width;
[title drawInRect:titleRect withAttributes:sTitleAttributes];
}
}
//**** END Drawing Photos ****//
//**** BEGIN Selection Rectangle ****//
if (mouseDown) {
[noShadow set];
[[NSColor whiteColor] set];
float minX = (mouseDownPoint.x < mouseCurrentPoint.x) ? mouseDownPoint.x : mouseCurrentPoint.x;
float minY = (mouseDownPoint.y < mouseCurrentPoint.y) ? mouseDownPoint.y : mouseCurrentPoint.y;
float maxX = (mouseDownPoint.x > mouseCurrentPoint.x) ? mouseDownPoint.x : mouseCurrentPoint.x;
float maxY = (mouseDownPoint.y > mouseCurrentPoint.y) ? mouseDownPoint.y : mouseCurrentPoint.y;
NSRect selectionRectangle = NSMakeRect(minX,minY,maxX-minX,maxY-minY);
[NSBezierPath strokeRect:selectionRectangle];
[[NSColor colorWithDeviceRed:0.8 green:0.8 blue:0.8 alpha:0.5] set];
[NSBezierPath fillRect:selectionRectangle];
}
//**** END Selection Rectangle ****//
}
- (void)forceRedisplay
{
[self setNeedsDisplay:YES];
}
- (void)setNeedsDisplayInRect:(NSRect)invalidatedRect
{
// Make the view redraw some more pixels, to avoid the "disappearing shadows on scroll" problem
if ([[borderShadow shadowColor] alphaComponent]!=0.0) {
NSRect shadowRect = invalidatedRect;
shadowRect.origin.x += [borderShadow shadowOffset].width;
shadowRect.origin.y -= [borderShadow shadowOffset].height;
shadowRect = NSInsetRect(shadowRect, -[borderShadow shadowBlurRadius], -[borderShadow shadowBlurRadius]);
invalidatedRect = NSUnionRect(invalidatedRect, shadowRect);
}
[super setNeedsDisplayInRect:invalidatedRect];
}
- (NSString *)view:(NSView *)view stringForToolTip:(NSToolTipTag)tag point:(NSPoint)point userData:(void *)userData
{
unsigned idx = [self photoIndexForPoint:point];
if (idx < [self photoCount])
{
return [delegate photoView:self tooltipForPhotoAtIndex:[self photoIndexForPoint:point]];
}
return nil;
}
#pragma mark -
// Delegate Accessors
#pragma mark Delegate Accessors
- (id)delegate
{
return delegate;
}
- (void)setDelegate:(id)del
{
[self willChangeValueForKey:@"delegate"];
delegate = del;
[self didChangeValueForKey:@"delegate"];
}
#pragma mark -
// Photos Methods
#pragma mark Photo Methods
- (NSArray *)photosArray
{
//NSLog(@"in -photosArray, returned photosArray = %@", photosArray);
return photosArray;
}
- (void)setPhotosArray:(NSArray *)aPhotosArray
{
//NSLog(@"in -setPhotosArray:, old value of photosArray: %@, changed to: %@", photosArray, aPhotosArray);
if (photosArray != aPhotosArray) {
[photosArray release];
[self willChangeValueForKey:@"photosArray"];
photosArray = [aPhotosArray mutableCopy];
[self didChangeValueForKey:@"photosArray"];
// update live resize array
if (nil != photosFastArray) {
[photosFastArray release];
}
photosFastArray = [[NSMutableArray alloc] initWithCapacity:[aPhotosArray count]];
unsigned i;
for (i = 0; i < [photosArray count]; i++)
{
[photosFastArray addObject:[NSNull null]];
}
// update internal grid size, adjust height based on the new grid size
[self scrollPoint:([self frame].origin)];
[self setNeedsDisplayInRect:[self visibleRect]];
}
}
#pragma mark -
// Selection Management
#pragma mark Selection Management
- (NSIndexSet *)selectedPhotoIndexes
{
//NSLog(@"in -selectedPhotoIndexes, returned selectedPhotoIndexes = %@", selectedPhotoIndexes);
return selectedPhotoIndexes;
}
- (void)setSelectedPhotoIndexes:(NSIndexSet *)aSelectedPhotoIndexes
{
//NSLog(@"in -setSelectedPhotoIndexes:, old value of selectedPhotoIndexes: %@, changed to: %@", selectedPhotoIndexes, aSelectedPhotoIndexes);
if ((selectedPhotoIndexes != aSelectedPhotoIndexes) && (![selectedPhotoIndexes isEqualToIndexSet:aSelectedPhotoIndexes])) {
// Set the selection and send KVO
[selectedPhotoIndexes release];
[self willChangeValueForKey:@"selectedPhotoIndexes"];
selectedPhotoIndexes = [aSelectedPhotoIndexes copy];
[self didChangeValueForKey:@"selectedPhotoIndexes"];
}
}
#pragma mark -
// Selection Style
#pragma mark Selection Style
- (BOOL)useBorderSelection
{
//NSLog(@"in -useBorderSelection, returned useBorderSelection = %@", useBorderSelection ? @"YES": @"NO");
return useBorderSelection;
}
- (void)setUseBorderSelection:(BOOL)flag
{
//NSLog(@"in -setUseBorderSelection, old value of useBorderSelection: %@, changed to: %@", (useBorderSelection ? @"YES": @"NO"), (flag ? @"YES": @"NO"));
[self willChangeValueForKey:@"useBorderSelection"];
useBorderSelection = flag;
[self didChangeValueForKey:@"useBorderSelection"];
[self setNeedsDisplayInRect:[self visibleRect]];
}
- (NSColor *)selectionBorderColor
{
//NSLog(@"in -selectionBorderColor, returned selectionBorderColor = %@", selectionBorderColor);
return selectionBorderColor;
}
- (void)setSelectionBorderColor:(NSColor *)aSelectionBorderColor
{
//NSLog(@"in -setSelectionBorderColor:, old value of selectionBorderColor: %@, changed to: %@", selectionBorderColor, aSelectionBorderColor);
if (selectionBorderColor != aSelectionBorderColor) {
[selectionBorderColor release];
[self willChangeValueForKey:@"selectionBorderColor"];
selectionBorderColor = [aSelectionBorderColor copy];
[self didChangeValueForKey:@"selectionBorderColor"];
}
}
- (BOOL)useShadowSelection
{
//NSLog(@"in -useShadowSelection, returned useShadowSelection = %@", useShadowSelection ? @"YES": @"NO");
return useShadowSelection;
}
- (void)setUseShadowSelection:(BOOL)flag
{
//NSLog(@"in -setUseShadowSelection, old value of useShadowSelection: %@, changed to: %@", (useShadowSelection ? @"YES": @"NO"), (flag ? @"YES": @"NO"));
[self willChangeValueForKey:@"useShadowSelection"];
useShadowSelection = flag;
[self willChangeValueForKey:@"useShadowSelection"];
[self setNeedsDisplayInRect:[self visibleRect]];
}
#pragma mark -
// Appearance
#pragma mark Appearance
- (BOOL)useShadowBorder
{
//NSLog(@"in -useShadowBorder, returned useShadowBorder = %@", useShadowBorder ? @"YES": @"NO");
return useShadowBorder;
}
- (void)setUseShadowBorder:(BOOL)flag
{
//NSLog(@"in -setUseShadowBorder, old value of useShadowBorder: %@, changed to: %@", (useShadowBorder ? @"YES": @"NO"), (flag ? @"YES": @"NO"));
[self willChangeValueForKey:@"useShadowBorder"];
useShadowBorder = flag;
[self didChangeValueForKey:@"useShadowBorder"];
[self setNeedsDisplayInRect:[self visibleRect]];
}
- (BOOL)useOutlineBorder
{
//NSLog(@"in -useOutlineBorder, returned useOutlineBorder = %@", useOutlineBorder ? @"YES": @"NO");
return useOutlineBorder;
}
- (void)setUseOutlineBorder:(BOOL)flag
{
//NSLog(@"in -setUseOutlineBorder, old value of useOutlineBorder: %@, changed to: %@", (useOutlineBorder ? @"YES": @"NO"), (flag ? @"YES": @"NO"));
[self willChangeValueForKey:@"useOutlineBorder"];
useOutlineBorder = flag;
[self didChangeValueForKey:@"useOutlineBorder"];
[self setNeedsDisplayInRect:[self visibleRect]];
}
- (NSColor *)backgroundColor
{
//NSLog(@"in -backgroundColor, returned backgroundColor = %@", backgroundColor);
return [[backgroundColor retain] autorelease];
}
- (void)setBackgroundColor:(NSColor *)aBackgroundColor
{
//NSLog(@"in -setBackgroundColor:, old value of backgroundColor: %@, changed to: %@", backgroundColor, aBackgroundColor);
if (backgroundColor != aBackgroundColor) {
[backgroundColor release];
[self willChangeValueForKey:@"backgroundColor"];
backgroundColor = [aBackgroundColor copy];
[self didChangeValueForKey:@"backgroundColor"];
// adjust the shadow box selection color based on the background color. values closer to white use black and vice versa
NSColor *newShadowBoxColor;
float whiteValue = 0.0;
if ([backgroundColor numberOfComponents] >= 3) {
float red, green, blue;
[backgroundColor getRed:&red green:&green blue:&blue alpha:NULL];
whiteValue = (red + green + blue) / 3;
} else if ([backgroundColor numberOfComponents] >= 1) {
[backgroundColor getWhite:&whiteValue alpha:NULL];
}
if (0.5 > whiteValue)
newShadowBoxColor = [NSColor colorWithDeviceWhite:1.0 alpha:0.5];
else
newShadowBoxColor = [NSColor colorWithDeviceWhite:0.0 alpha:0.5];
[self setShadowBoxColor:newShadowBoxColor];
}
}
- (BOOL)useHighQualityResize
{
return useHighQualityResize;
}
- (void)setUseHighQualityResize:(BOOL)flag
{
useHighQualityResize = flag;
}
- (BOOL)showCaptions
{
return showCaptions;
}
- (void)setShowCaptions:(BOOL)flag
{
showCaptions = flag;
}
- (void) resetCaptionShowing:(NSNotification *)notification
{
NSDictionary *ui = [notification userInfo];
BOOL flag = [[ui objectForKey:@"flag"] boolValue];
[self setShowCaptions:flag];
}
- (float)photoSize
{
//NSLog(@"in -photoSize, returned photoSize = %f", photoSize);
return photoSize;
}
- (void)setPhotoSize:(float)aPhotoSize
{
//NSLog(@"in -setPhotoSize, old value of photoSize: %f, changed to: %f", photoSize, aPhotoSize);
[self willChangeValueForKey:@"photoSize"];
photoSize = aPhotoSize;
[self didChangeValueForKey:@"photoSize"];
// update internal grid size, adjust height based on the new grid size
// to make sure the same photos stay in view, get a visible photos' index, then scroll to that photo after the update
NSRect visibleRect = [self visibleRect];
float heightRatio = visibleRect.origin.y / [self frame].size.height;
visibleRect.origin.y = heightRatio * [self frame].size.height;
[self scrollRectToVisible:visibleRect];
[self viewWillStartLiveResize];
[self setNeedsDisplayInRect:[self visibleRect]];
// update time for live resizing
if (nil != photoResizeTime) {
[photoResizeTime release];
photoResizeTime = nil;
}
isDonePhotoResizing = NO;
photoResizeTime = [[NSDate date] retain];
if (photoResizeTimer) {
[photoResizeTimer invalidate];
photoResizeTimer = nil;
}
// note that the timer retains the target
photoResizeTimer = [NSTimer scheduledTimerWithTimeInterval:0.5
target:self
selector:@selector(updatePhotoResizing)
userInfo:nil
repeats:YES];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setFloat:aPhotoSize forKey:@"MUPhotoSize"];
}
- (IBAction)takePhotoSizeFrom:(id)sender // allow hooking up to a slider
{
if ([sender respondsToSelector:@selector(doubleValue)])
{
mouseCurrentPoint = mouseDownPoint = NSZeroPoint;
[self setPhotoSize:[sender doubleValue]];
//fake a bounds resize notification
[[NSNotificationCenter defaultCenter] postNotificationName:NSViewFrameDidChangeNotification
object:self];
if ([[self selectionIndexes] count] > 0)
{
unsigned lastSelectedIndex = [[self selectionIndexes] lastIndex];
NSRect r = [self photoRectForIndex:lastSelectedIndex];
r.origin.y -= photoVerticalSpacing;
r.size.height += photoVerticalSpacing;
[self scrollRectToVisible:r];
}
}
}
#pragma mark -
// Don't Mess With Texas
#pragma mark Don't Mess With Texas
// haven't tested changing these behaviors yet - there's no reason they shouldn't work... but use at your own risk.
- (float)photoVerticalSpacing
{
//NSLog(@"in -photoVerticalSpacing, returned photoVerticalSpacing = %f", photoVerticalSpacing);
return photoVerticalSpacing;
}
- (void)setPhotoVerticalSpacing:(float)aPhotoVerticalSpacing
{
//NSLog(@"in -setPhotoVerticalSpacing, old value of photoVerticalSpacing: %f, changed to: %f", photoVerticalSpacing, aPhotoVerticalSpacing);
[self willChangeValueForKey:@"photoVerticalSpacing"];
photoVerticalSpacing = aPhotoVerticalSpacing;
[self didChangeValueForKey:@"photoVertificalSpacing"];
// update internal grid size, adjust height based on the new grid size
NSRect visibleRect = [self visibleRect];
float heightRatio = visibleRect.origin.y / [self frame].size.height;
visibleRect.origin.y = heightRatio * [self frame].size.height;
[self scrollRectToVisible:visibleRect];
[self setNeedsDisplayInRect:[self visibleRect]];
// update time for live resizing
if (nil != photoResizeTime) {
[photoResizeTime release];
photoResizeTime = nil;
}
isDonePhotoResizing = NO;
photoResizeTime = [[NSDate date] retain];
if (nil == photoResizeTimer) {
// the timer retains the target
photoResizeTimer = [NSTimer scheduledTimerWithTimeInterval:2.0
target:self
selector:@selector(updatePhotoResizing)
userInfo:nil
repeats:YES];
}
}
- (float)photoHorizontalSpacing
{
//NSLog(@"in -photoHorizontalSpacing, returned photoHorizontalSpacing = %f", photoHorizontalSpacing);
return photoHorizontalSpacing;
}
- (void)setPhotoHorizontalSpacing:(float)aPhotoHorizontalSpacing
{
//NSLog(@"in -setPhotoHorizontalSpacing, old value of photoHorizontalSpacing: %f, changed to: %f", photoHorizontalSpacing, aPhotoHorizontalSpacing);
[self willChangeValueForKey:@"photoHorizontalSpacing"];
photoHorizontalSpacing = aPhotoHorizontalSpacing;
[self didChangeValueForKey:@"photoHorizontalSpacing"];
// update internal grid size, adjust height based on the new grid size
NSRect visibleRect = [self visibleRect];
float heightRatio = visibleRect.origin.y / [self frame].size.height;
visibleRect.origin.y = heightRatio * [self frame].size.height;
[self scrollRectToVisible:visibleRect];
[self setNeedsDisplayInRect:[self visibleRect]];
// update time for live resizing
if (nil != photoResizeTime) {
[photoResizeTime release];
photoResizeTime = nil;
}
isDonePhotoResizing = NO;
photoResizeTime = [[NSDate date] retain];
if (nil == photoResizeTimer) {
// the timer retains the target
photoResizeTimer = [NSTimer scheduledTimerWithTimeInterval:2.0
target:self
selector:@selector(updatePhotoResizing)
userInfo:nil
repeats:YES];
}
}
- (NSColor *)borderOutlineColor
{
//NSLog(@"in -borderOutlineColor, returned borderOutlineColor = %@", borderOutlineColor);
return borderOutlineColor;
}
- (void)setBorderOutlineColor:(NSColor *)aBorderOutlineColor
{
//NSLog(@"in -setBorderOutlineColor:, old value of borderOutlineColor: %@, changed to: %@", borderOutlineColor, aBorderOutlineColor);
if (borderOutlineColor != aBorderOutlineColor) {
[borderOutlineColor release];
[self willChangeValueForKey:@"borderOutlineColor"];
borderOutlineColor = [aBorderOutlineColor copy];
[self didChangeValueForKey:@"borderOutlineColor"];
[self setNeedsDisplayInRect:[self visibleRect]];
}
}
- (NSColor *)shadowBoxColor
{
//NSLog(@"in -shadowBoxColor, returned shadowBoxColor = %@", shadowBoxColor);
return shadowBoxColor;
}
- (void)setShadowBoxColor:(NSColor *)aShadowBoxColor
{
//NSLog(@"in -setShadowBoxColor:, old value of shadowBoxColor: %@, changed to: %@", shadowBoxColor, aShadowBoxColor);
if (shadowBoxColor != aShadowBoxColor) {
[shadowBoxColor release];
shadowBoxColor = [aShadowBoxColor copy];
[self setNeedsDisplayInRect:[self visibleRect]];
}
}
- (float)selectionBorderWidth
{
//NSLog(@"in -selectionBorderWidth, returned selectionBorderWidth = %f", selectionBorderWidth);
return selectionBorderWidth;
}
- (void)setSelectionBorderWidth:(float)aSelectionBorderWidth
{
//NSLog(@"in -setSelectionBorderWidth, old value of selectionBorderWidth: %f, changed to: %f", selectionBorderWidth, aSelectionBorderWidth);
selectionBorderWidth = aSelectionBorderWidth;
}
#pragma mark -
// Mouse Event Methods
#pragma mark Mouse Event Methods
- (void) mouseDown:(NSEvent *) event
{
mouseDown = YES;
mouseDownPoint = [self convertPoint:[event locationInWindow] fromView:nil];
mouseCurrentPoint = mouseDownPoint;
unsigned clickedIndex = [self photoIndexForPoint:mouseDownPoint];
NSRect photoRect = [self photoRectForIndex:clickedIndex];
unsigned int flags = [event modifierFlags];
NSMutableIndexSet* indexes = [[self selectionIndexes] mutableCopy];
BOOL imageHit = NSPointInRect(mouseDownPoint, photoRect);
if (imageHit) {
if (flags & NSCommandKeyMask) {
// Flip current image selection state.
if ([indexes containsIndex:clickedIndex]) {
[indexes removeIndex:clickedIndex];
} else {
[indexes addIndex:clickedIndex];
}
} else {
if (flags & NSShiftKeyMask) {
// Add range to selection.
if ([indexes count] == 0) {
[indexes addIndex:clickedIndex];
} else {
unsigned int origin = (clickedIndex < [indexes lastIndex]) ? clickedIndex :[indexes lastIndex];
unsigned int length = (clickedIndex < [indexes lastIndex]) ? [indexes lastIndex] - clickedIndex : clickedIndex - [indexes lastIndex];
length++;
[indexes addIndexesInRange:NSMakeRange(origin, length)];
}
} else {
if (![self isPhotoSelectedAtIndex:clickedIndex]) {
// Photo selection without modifiers.
[indexes removeAllIndexes];
[indexes addIndex:clickedIndex];
}
}
}
potentialDragDrop = YES;
} else {
if ((flags & NSShiftKeyMask) == 0) {
[indexes removeAllIndexes];
}
potentialDragDrop = NO;
}
[self setSelectionIndexes:indexes];
[indexes release];
}
- (void)mouseDragged:(NSEvent *)event
{
if (0 == columns) return;
mouseCurrentPoint = [self convertPoint:[event locationInWindow] fromView:nil];
// if the mouse has moved less than 5px in either direction, don't register the drag yet
float xFromStart = fabs((mouseDownPoint.x - mouseCurrentPoint.x));
float yFromStart = fabs((mouseDownPoint.y - mouseCurrentPoint.y));
if ((xFromStart < 5) && (yFromStart < 5)) {
return;
} else if (potentialDragDrop && (nil != delegate)) {
// create a drag image
unsigned clickedIndex = [self photoIndexForPoint:mouseDownPoint];
NSImage *clickedImage = [self photoAtIndex:clickedIndex];
BOOL flipped = [clickedImage isFlipped];
[clickedImage setFlipped:YES];
NSSize scaledSize = [self scaledPhotoSizeForSize:[clickedImage size]];
if (nil == clickedImage) { // creates a red image, which should let the user/developer know something is wrong
clickedImage = [[[NSImage alloc] initWithSize:NSMakeSize(photoSize,photoSize)] autorelease];
[clickedImage lockFocus];
[[NSColor redColor] set];
[NSBezierPath fillRect:NSMakeRect(0,0,photoSize,photoSize)];
[clickedImage unlockFocus];
}
NSImage *dragImage = [[NSImage alloc] initWithSize:scaledSize];
// draw the drag image as a semi-transparent copy of the image the user dragged, and optionally a red badge indicating the number of photos
[dragImage lockFocus];
[clickedImage drawInRect:NSMakeRect(0,0,scaledSize.width,scaledSize.height) fromRect:NSMakeRect(0,0,[clickedImage size].width,[clickedImage size].height) operation:NSCompositeCopy fraction:0.7];
[dragImage unlockFocus];
[clickedImage setFlipped:flipped];
// if there's more than one image, put a badge on the photo
if ([[self selectionIndexes] count] > 1) {
NSMutableDictionary *attributes = [[NSMutableDictionary alloc] init];
[attributes setObject:[NSColor whiteColor] forKey:NSForegroundColorAttributeName];
[attributes setObject:[NSFont fontWithName:@"Helvetica" size:14] forKey:NSFontAttributeName];
NSAttributedString *badgeString = [[NSAttributedString alloc] initWithString:[[NSNumber numberWithInt:[[self selectionIndexes] count]] stringValue] attributes:attributes];
NSSize stringSize = [badgeString size];
int diameter = stringSize.width;
if (stringSize.height > diameter) diameter = stringSize.height;
diameter += 5;
// calculate the badge circle
int maxY = [dragImage size].height - 5;
int maxX = [dragImage size].width - 5;
int minY = maxY - diameter;
int minX = maxX - diameter;
NSBezierPath *circle = [NSBezierPath bezierPathWithOvalInRect:NSMakeRect(minX,minY,maxX-minX,maxY-minY)];
// draw the string
NSPoint point;
point.x = maxX - ((maxX - minX) / 2) - 1 - (stringSize.width / 2);
point.y = maxY - diameter + (stringSize.height / 2) - 6;
NSAffineTransform *t = [NSAffineTransform transform];
[t translateXBy:0 yBy:maxY];
[t scaleXBy:1 yBy:-1];
[dragImage lockFocus];
[t concat];
[[NSColor colorWithDeviceRed:1 green:0.1 blue:0.1 alpha:0.7] set];
[circle fill];
[badgeString drawAtPoint:point];
[t invert];
[t concat];
[dragImage unlockFocus];
[badgeString release];
[attributes release];
}
[dragImage setFlipped:YES];
// get the pasteboard and register the returned types with delegate as the owner
NSPasteboard *pb = [NSPasteboard pasteboardWithName:NSDragPboard];
[pb declareTypes:[NSArray array] owner:nil]; // clear the pasteboard
[delegate photoView:self fillPasteboardForDrag:pb];
// place the cursor in the center of the drag image
NSPoint p = [self convertPoint:[event locationInWindow] fromView:nil];
NSSize imageSize = [dragImage size];
p.x = p.x - imageSize.width / 2;
p.y = p.y + imageSize.height / 2;
[self dragImage:dragImage at:p offset:NSZeroSize event:event pasteboard:pb source:self slideBack:YES];
[dragImage release];
} else {
// adjust the mouse current point so that it's not outside the frame
NSRect frameRect = [self frame];
if (mouseCurrentPoint.x < NSMinX(frameRect))
mouseCurrentPoint.x = NSMinX(frameRect);
if (mouseCurrentPoint.x > NSMaxX(frameRect))
mouseCurrentPoint.x = NSMaxX(frameRect);
if (mouseCurrentPoint.y < NSMinY(frameRect))
mouseCurrentPoint.y = NSMinY(frameRect);
if (mouseCurrentPoint.y > NSMaxY(frameRect))
mouseCurrentPoint.y = NSMaxY(frameRect);
// determine the rect for the current drag area
float minX, maxX, minY, maxY;
minX = (mouseCurrentPoint.x < mouseDownPoint.x) ? mouseCurrentPoint.x : mouseDownPoint.x;
minY = (mouseCurrentPoint.y < mouseDownPoint.y) ? mouseCurrentPoint.y : mouseDownPoint.y;
maxX = (mouseCurrentPoint.x > mouseDownPoint.x) ? mouseCurrentPoint.x : mouseDownPoint.x;
maxY = (mouseCurrentPoint.y > mouseDownPoint.y) ? mouseCurrentPoint.y : mouseDownPoint.y;
if (maxY > NSMaxY(frameRect))
maxY = NSMaxY(frameRect);
if (maxX > NSMaxX(frameRect))
maxX = NSMaxX(frameRect);
NSRect selectionRect = NSMakeRect(minX,minY,maxX-minX,maxY-minY);
unsigned minIndex = [self photoIndexForPoint:NSMakePoint(minX, minY)];
unsigned xRun = [self photoIndexForPoint:NSMakePoint(maxX, minY)] - minIndex + 1;
unsigned yRun = [self photoIndexForPoint:NSMakePoint(minX, maxY)] - minIndex + 1;
unsigned selectedRows = (yRun / columns);
// Save the current selection (if any), then populate the drag indexes
// this allows us to shift band select to add to the current selection.
[dragSelectedPhotoIndexes removeAllIndexes];
[dragSelectedPhotoIndexes addIndexes:[self selectionIndexes]];
// add indexes in the drag rectangle
unsigned i;
for (i = 0; i <= selectedRows; i++) {
unsigned rowStartIndex = (i * columns) + minIndex;
unsigned j;
for (j = rowStartIndex; j < (rowStartIndex + xRun); j++) {
if (NSIntersectsRect([self photoRectForIndex:j],selectionRect))
[dragSelectedPhotoIndexes addIndex:j];
}
}
// if requested, set the selection. this could cause a rapid series of KVO notifications, so if this is false, the view tracks
// the selection internally, but doesn't pass it to the bindings or the delegates until the drag is over.
// This will cause an appropriate redraw.
if (sendsLiveSelectionUpdates)
{
[self setSelectionIndexes:dragSelectedPhotoIndexes];
}
// autoscrolling
if (autoscrollTimer == nil) {
// the timer retains the target: must invalidate or dealloc wont be called on the photo view!
autoscrollTimer = [NSTimer scheduledTimerWithTimeInterval:0.2
target:self
selector:@selector(autoscroll)
userInfo:nil
repeats:YES];
}
[[self superview] autoscroll:event];
[self setNeedsDisplayInRect:[self visibleRect]];
}
}
- (void)mouseUp:(NSEvent *)event
{
// Double-click Handling
if ([event clickCount] == 2) {
// There could be more than one selected photo. In that case, call the delegates doubleClickOnPhotoAtIndex routine for
// each selected photo.
unsigned int selectedIndex = [[self selectionIndexes] firstIndex];
while (selectedIndex != NSNotFound) {
[delegate photoView:self doubleClickOnPhotoAtIndex:selectedIndex withFrame:[self photoRectForIndex:selectedIndex]];
selectedIndex = [[self selectionIndexes] indexGreaterThanIndex:selectedIndex];
}
}
else if (0 < [dragSelectedPhotoIndexes count]) { // finishing a drag selection
// move the drag indexes into the main selection indexes - firing off KVO messages or delegate messages
[self setSelectionIndexes:dragSelectedPhotoIndexes];
[dragSelectedPhotoIndexes removeAllIndexes];
}
if (autoscrollTimer != nil) {
[autoscrollTimer invalidate];
autoscrollTimer = nil;
}
mouseDown = NO;
mouseCurrentPoint = mouseDownPoint = NSZeroPoint;
[self setNeedsDisplayInRect:[self visibleRect]];
}
- (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal
{
if (nil != delegate)
return [delegate photoView:self draggingSourceOperationMaskForLocal:isLocal];
else