UICaboodle/RVBook.mm

   1 #import "RVBook.h"
   2
   3 #import <UIKit/UINavigationBar.h>
   4 #import <UIKit/UINavigationItem.h>
   5
   6 #import <UIKit/UITransitionView.h>
   7
   8 #import <UIKit/UIView-Geometry.h>
   9 #import <UIKit/UIView-Hierarchy.h>
  10
  11 #import <Foundation/Foundation.h>
  12 #import <CoreGraphics/CGGeometry.h>
  13
  14 #include <cstdio>
  15 #include <cstdlib>
  16
  17 #include <errno.h>
  18
  19 #import "RVPage.h"
  20
  21 @interface NSObject (UICaboodleRVBook)
  22 - (float) widthForButtonContents:(float)width;
  23 @end
  24
  25 @implementation NSObject (UICaboodleRVBook)
  26
  27 - (float) widthForButtonContents:(float)width {
  28     return width;
  29 }
  30
  31 @end
  32
  33 @interface UIImage (UICaboodleRVBook)
  34 - (float) widthForButtonContents:(float)width;
  35 @end
  36
  37 @implementation UIImage (UICaboodleRVBook)
  38
  39 - (float) widthForButtonContents:(float)width {
  40     return [self size].width + 8;
  41 }
  42
  43 @end
  44
  45 @interface RVNavigationBar : UINavigationBar {
  46 }
  47
  48 - (id) createButtonWithContents:(id)contents width:(float)width barStyle:(int)barStyle buttonStyle:(int)style isRight:(BOOL)right;
  49 @end
  50
  51 @implementation RVNavigationBar
  52
  53 - (id) createButtonWithContents:(id)contents width:(float)width barStyle:(int)barStyle buttonStyle:(int)style isRight:(BOOL)right {
  54     float adjust = [contents widthForButtonContents:width];
  55     NSLog(@"cc:%@:%g:%g", contents, width, adjust);
  56     width = adjust;
  57     return [super createButtonWithContents:contents width:width barStyle:barStyle buttonStyle:style isRight:right];
  58 }
  59
  60 @end
  61
  62 @implementation RVBook
  63
  64 - (void) dealloc {
  65     [navbar_ setDelegate:nil];
  66
  67     [pages_ release];
  68     [navbar_ release];
  69     [transition_ release];
  70     [super dealloc];
  71 }
  72
  73 - (UINavigationBar *) navigationBar {
  74     return navbar_;
  75 }
  76
  77 - (void) navigationBar:(UINavigationBar *)navbar buttonClicked:(int)button {
  78     _assert([pages_ count] != 0);
  79     RVPage *page = [pages_ lastObject];
  80     switch (button) {
  81         case 0: [page _rightButtonClicked]; break;
  82         case 1: [page _leftButtonClicked]; break;
  83     }
  84 }
  85
  86 - (void) navigationBar:(UINavigationBar *)navbar poppedItem:(UINavigationItem *)item {
  87     _assert([pages_ count] != 0);
  88     if (!resetting_)
  89         [[pages_ lastObject] setPageActive:NO];
  90     [pages_ removeLastObject];
  91     if (!resetting_)
  92         [self resetViewAnimated:YES toPage:[pages_ lastObject]];
  93 }
  94
  95 - (id) initWithFrame:(CGRect)frame {
  96     if ((self = [super initWithFrame:frame]) != nil) {
  97         pages_ = [[NSMutableArray arrayWithCapacity:4] retain];
  98
  99         struct CGRect bounds = [self bounds];
 100         CGSize navsize = [UINavigationBar defaultSize];
 101         CGRect navrect = {{0, 0}, navsize};
 102
 103         navbar_ = [[RVNavigationBar alloc] initWithFrame:navrect];
 104         [self addSubview:navbar_];
 105
 106         [navbar_ setBarStyle:0];
 107         [navbar_ setDelegate:self];
 108
 109         transition_ = [[UITransitionView alloc] initWithFrame:CGRectMake(
 110             bounds.origin.x, bounds.origin.y + navsize.height, bounds.size.width, bounds.size.height - navsize.height
 111         )];
 112
 113         [self addSubview:transition_];
 114     } return self;
 115 }
 116
 117 - (void) setDelegate:(id)delegate {
 118     delegate_ = delegate;
 119 }
 120
 121 - (void) setPage:(RVPage *)page {
 122     if ([pages_ count] != 0)
 123         [[pages_ lastObject] setPageActive:NO];
 124
 125     [navbar_ disableAnimation];
 126     resetting_ = true;
 127     for (unsigned i(0), pages([pages_ count]); i != pages; ++i)
 128         [navbar_ popNavigationItem];
 129     resetting_ = false;
 130
 131     [self pushPage:page];
 132     [navbar_ enableAnimation];
 133 }
 134
 135 - (void) pushPage:(RVPage *)page {
 136     if ([pages_ count] != 0)
 137         [[pages_ lastObject] setPageActive:NO];
 138
 139     NSString *title = [self getTitleForPage:page];
 140
 141     NSString *backButtonTitle = [page backButtonTitle];
 142     if (backButtonTitle == nil)
 143         backButtonTitle = title;
 144
 145     UINavigationItem *navitem = [[[UINavigationItem alloc] initWithTitle:title] autorelease];
 146     [navitem setBackButtonTitle:backButtonTitle];
 147     [navbar_ pushNavigationItem:navitem];
 148
 149     BOOL animated = [pages_ count] == 0 ? NO : YES;
 150     [page setFrame:[transition_ bounds]];
 151     [transition_ transition:(animated ? 1 : 0) toView:page];
 152     [page setPageActive:YES];
 153
 154     [pages_ addObject:page];
 155     [self reloadButtonsForPage:page];
 156
 157     [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 158 }
 159
 160 - (void) popPages:(unsigned)pages {
 161     if (pages == 0)
 162         return;
 163
 164     [[pages_ lastObject] setPageActive:NO];
 165
 166     resetting_ = true;
 167     for (unsigned i(0); i != pages; ++i)
 168         [navbar_ popNavigationItem];
 169     resetting_ = false;
 170
 171     [self resetViewAnimated:YES toPage:[pages_ lastObject]];
 172 }
 173
 174 - (void) resetViewAnimated:(BOOL)animated {
 175     resetting_ = true;
 176
 177     if ([pages_ count] > 1) {
 178         [navbar_ disableAnimation];
 179         while ([pages_ count] != (animated ? 2 : 1))
 180             [navbar_ popNavigationItem];
 181         [navbar_ enableAnimation];
 182         if (animated)
 183             [navbar_ popNavigationItem];
 184     }
 185
 186     resetting_ = false;
 187
 188     [self resetViewAnimated:animated toPage:[pages_ lastObject]];
 189 }
 190
 191 - (void) resetViewAnimated:(BOOL)animated toPage:(RVPage *)page {
 192     [page resetViewAnimated:animated];
 193     [page setFrame:[transition_ bounds]];
 194     [transition_ transition:(animated ? 2 : 0) toView:page];
 195     [page setPageActive:YES];
 196     [self reloadButtonsForPage:page];
 197
 198     [navbar_ setAccessoryView:[page accessoryView] animate:animated removeOnPop:NO];
 199 }
 200
 201 - (void) setBackButtonTitle:(NSString *)title forPage:(RVPage *)page {
 202     if ([pages_ count] == 0 || page != [pages_ lastObject])
 203         return;
 204     UINavigationItem *navitem = [navbar_ topItem];
 205     [navitem setBackButtonTitle:title];
 206 }
 207
 208 - (void) reloadTitleForPage:(RVPage *)page {
 209     if ([pages_ count] == 0 || page != [pages_ lastObject])
 210         return;
 211     UINavigationItem *navitem = [navbar_ topItem];
 212     NSString *title = [self getTitleForPage:page];
 213     [navitem setTitle:title];
 214 }
 215
 216 - (void) reloadButtonsForPage:(RVPage *)page {
 217     if ([pages_ count] == 0 || page != [pages_ lastObject])
 218         return;
 219     NSString *leftButtonTitle([page leftButtonTitle]);
 220     UINavigationButtonStyle leftButtonStyle = [page leftButtonStyle];
 221     UINavigationButtonStyle rightButtonStyle = [page rightButtonStyle];
 222     //[navbar_ showButtonsWithLeftTitle:leftButtonTitle rightTitle:[page rightButtonTitle] leftBack:(leftButtonTitle == nil)];
 223
 224     [navbar_
 225         showLeftButton:leftButtonTitle
 226         withStyle:leftButtonStyle
 227         rightButton:[page rightButtonTitle]
 228         withStyle:rightButtonStyle
 229     ];
 230 }
 231
 232 - (NSString *) getTitleForPage:(RVPage *)page {
 233     return [page title];
 234 }
 235
 236 - (void) reloadData {
 237     for (int i(0), e([pages_ count]); i != e; ++i) {
 238         RVPage *page([pages_ objectAtIndex:(e - i - 1)]);
 239         [page reloadData];
 240     }
 241 }
 242
 243 - (CGRect) pageBounds {
 244     return [transition_ bounds];
 245 }
 246
 247 @end