chrome/browser/ui/cocoa/panels/panel_titlebar_view_cocoa.mm

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #import "chrome/browser/ui/cocoa/panels/panel_titlebar_view_cocoa.h"
   6
   7 #import <Cocoa/Cocoa.h>
   8
   9 #include "base/logging.h"
  10 #include "base/mac/scoped_nsautorelease_pool.h"
  11 #import "chrome/browser/ui/cocoa/panels/panel_window_controller_cocoa.h"
  12 #import "chrome/browser/ui/panels/panel_constants.h"
  13 #include "chrome/grit/generated_resources.h"
  14 #include "grit/theme_resources.h"
  15 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSBezierPath+RoundRect.h"
  16 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSColor+Luminance.h"
  17 #import "ui/base/cocoa/hover_image_button.h"
  18 #import "ui/base/cocoa/nsview_additions.h"
  19 #include "ui/base/l10n/l10n_util_mac.h"
  20 #include "ui/base/resource/resource_bundle.h"
  21 #include "ui/gfx/image/image.h"
  22 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
  23
  24 // 'Glint' is a glowing light animation on the titlebar to attract user's
  25 // attention. Numbers are arbitrary, based on several tries.
  26 const double kGlintAnimationDuration = 1.5;
  27 const double kGlintRepeatIntervalSeconds = 1.0;
  28 const int kNumberOfGlintRepeats = 4;  // 5 total, including initial flash.
  29
  30 // Used to implement TestingAPI
  31 static NSEvent* MakeMouseEvent(NSEventType type,
  32                                NSPoint point,
  33                                int modifierFlags,
  34                                int clickCount) {
  35   return [NSEvent mouseEventWithType:type
  36                             location:point
  37                        modifierFlags:modifierFlags
  38                            timestamp:0
  39                         windowNumber:0
  40                              context:nil
  41                          eventNumber:0
  42                           clickCount:clickCount
  43                             pressure:0.0];
  44 }
  45
  46 // Test drag controller - does not contain a nested message loop, directly
  47 // invokes the dragStarted/dragProgress instead.
  48 @interface TestDragController : MouseDragController {
  49  @private
  50   BOOL dragStarted_;
  51 }
  52 - (void)mouseDragged:(NSEvent*)event;
  53 @end
  54
  55 @implementation TestDragController
  56 // Bypass nested message loop for tests. There is no need to check for
  57 // threshold here as the base class does because tests only simulate a single
  58 // 'mouse drag' to the destination point.
  59 - (void)mouseDragged:(NSEvent*)event {
  60   if (!dragStarted_) {
  61     [[self client] dragStarted:[self initialMouseLocation]];
  62     dragStarted_ = YES;
  63   }
  64
  65   [[self client] dragProgress:[event locationInWindow]];
  66 }
  67 @end
  68
  69 @implementation PanelTitlebarOverlayView
  70 // Sometimes we do not want to bring chrome window to foreground when we click
  71 // on any part of the titlebar. To do this, we first postpone the window
  72 // reorder here (shouldDelayWindowOrderingForEvent is called during when mouse
  73 // button is pressed but before mouseDown: is dispatched) and then complete
  74 // canceling the reorder by [NSApp preventWindowOrdering] in mouseDown handler
  75 // of this view.
  76 - (BOOL)shouldDelayWindowOrderingForEvent:(NSEvent*)theEvent {
  77   disableReordering_ = ![controller_ canBecomeKeyWindow];
  78   return disableReordering_;
  79 }
  80
  81 - (void)mouseDown:(NSEvent*)event {
  82   if (disableReordering_)
  83     [NSApp preventWindowOrdering];
  84   disableReordering_ = NO;
  85   // Continue bubbling the event up the chain of responders.
  86   [super mouseDown:event];
  87 }
  88
  89 - (BOOL)acceptsFirstMouse:(NSEvent*)event {
  90   return YES;
  91 }
  92 @end
  93
  94 @implementation RepaintAnimation
  95 - (id)initWithView:(NSView*)targetView duration:(double) duration {
  96   if ((self = [super initWithDuration:duration
  97                        animationCurve:NSAnimationEaseInOut])) {
  98     [self setAnimationBlockingMode:NSAnimationNonblocking];
  99     targetView_ = targetView;
 100   }
 101   return self;
 102 }
 103
 104 - (void)setCurrentProgress:(NSAnimationProgress)progress {
 105   [super setCurrentProgress:progress];
 106   [targetView_ setNeedsDisplay:YES];
 107 }
 108 @end
 109
 110
 111 @implementation PanelTitlebarViewCocoa
 112
 113 - (id)initWithFrame:(NSRect)frame {
 114   if ((self = [super initWithFrame:frame]))
 115     dragController_.reset([[MouseDragController alloc] initWithClient:self]);
 116   return self;
 117 }
 118
 119 - (void)dealloc {
 120   [[NSNotificationCenter defaultCenter] removeObserver:self];
 121   [self stopGlintAnimation];
 122   [super dealloc];
 123 }
 124
 125 - (void)onCloseButtonClick:(id)sender {
 126   [controller_ closePanel];
 127 }
 128
 129 - (void)onMinimizeButtonClick:(id)sender {
 130   [controller_ minimizeButtonClicked:[[NSApp currentEvent] modifierFlags]];
 131 }
 132
 133 - (void)onRestoreButtonClick:(id)sender {
 134   [controller_ restoreButtonClicked:[[NSApp currentEvent] modifierFlags]];
 135 }
 136
 137 - (void)drawRect:(NSRect)rect {
 138   if (isDrawingAttention_) {
 139     NSColor* attentionColor = [NSColor colorWithCalibratedRed:0x53/255.0
 140                                                         green:0xa9/255.0
 141                                                          blue:0x3f/255.0
 142                                                         alpha:1.0];
 143     [attentionColor set];
 144     NSRectFillUsingOperation([self bounds], NSCompositeSourceOver);
 145
 146     if ([glintAnimation_ isAnimating]) {
 147       base::scoped_nsobject<NSGradient> glint([NSGradient alloc]);
 148       float currentAlpha = 0.8 * [glintAnimation_ currentValue];
 149       NSColor* startColor = [NSColor colorWithCalibratedWhite:1.0
 150                                                         alpha:currentAlpha];
 151       NSColor* endColor = [NSColor colorWithCalibratedWhite:1.0
 152                                                       alpha:0.0];
 153       [glint initWithColorsAndLocations:
 154            startColor, 0.0, startColor, 0.3, endColor, 1.0, nil];
 155       NSRect bounds = [self bounds];
 156       [glint drawInRect:bounds relativeCenterPosition:NSZeroPoint];
 157     }
 158   } else {
 159     BOOL isActive = [[self window] isMainWindow];
 160
 161     // If titlebar is close to minimized state or is at minimized state and only
 162     // shows a few pixels, change the color to something light and add border.
 163     NSRect windowFrame = [[self window] frame];
 164     if (NSHeight(windowFrame) < 8) {
 165       NSColor* lightBackgroundColor =
 166           [NSColor colorWithCalibratedRed:0xf5/255.0
 167                                     green:0xf4/255.0
 168                                      blue:0xf0/255.0
 169                                     alpha:1.0];
 170       [lightBackgroundColor set];
 171       NSRectFill([self bounds]);
 172
 173       NSColor* borderColor =
 174           [NSColor colorWithCalibratedRed:0xc9/255.0
 175                                     green:0xc9/255.0
 176                                      blue:0xc9/255.0
 177                                     alpha:1.0];
 178       [borderColor set];
 179       NSFrameRect([self bounds]);
 180     } else {
 181       // use solid black-ish colors.
 182       NSColor* backgroundColor = isActive ?
 183         [NSColor colorWithCalibratedRed:0x3a/255.0
 184                                   green:0x3d/255.0
 185                                    blue:0x3d/255.0
 186                                   alpha:1.0] :
 187         [NSColor colorWithCalibratedRed:0x7a/255.0
 188                                   green:0x7c/255.0
 189                                    blue:0x7c/255.0
 190                                   alpha:1.0];
 191
 192       [backgroundColor set];
 193       NSRectFill([self bounds]);
 194     }
 195   }
 196
 197   NSColor* titleColor = [NSColor colorWithCalibratedRed:0xf9/255.0
 198                                                   green:0xf9/255.0
 199                                                    blue:0xf9/255.0
 200                                                   alpha:1.0];
 201   [title_ setTextColor:titleColor];
 202 }
 203
 204 - (void)attach {
 205   // Interface Builder can not put a view as a sibling of contentView,
 206   // so need to do it here. Placing ourself as the last child of the
 207   // internal view allows us to draw on top of the titlebar.
 208   // Note we must use [controller_ window] here since we have not been added
 209   // to the view hierarchy yet.
 210   NSView* contentView = [[controller_ window] contentView];
 211   NSView* rootView = [contentView superview];
 212   [rootView addSubview:self];
 213
 214   // Figure out the rectangle of the titlebar and set us on top of it.
 215   // The titlebar covers window's root view where not covered by contentView.
 216   // Compute the titlebar frame in coordinate system of the window's root view.
 217   //        NSWindow
 218   //           |
 219   //    ___root_view____
 220   //     |            |
 221   // contentView  titlebar
 222   NSSize titlebarSize = NSMakeSize(0, panel::kTitlebarHeight);
 223   titlebarSize = [contentView convertSize:titlebarSize toView:rootView];
 224   NSRect rootViewBounds = [[self superview] bounds];
 225   NSRect titlebarFrame =
 226       NSMakeRect(NSMinX(rootViewBounds),
 227                  NSMaxY(rootViewBounds) - titlebarSize.height,
 228                  NSWidth(rootViewBounds),
 229                  titlebarSize.height);
 230   [self setFrame:titlebarFrame];
 231
 232   [title_ setFont:[[NSFontManager sharedFontManager]
 233                    fontWithFamily:@"Arial"
 234                            traits:NSBoldFontMask
 235                            weight:0
 236                              size:14.0]];
 237   [title_ setDrawsBackground:NO];
 238
 239   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
 240
 241   [self initializeImageButton:customCloseButton_
 242       image:rb.GetNativeImageNamed(IDR_PANEL_CLOSE).ToNSImage()
 243       hoverImage:rb.GetNativeImageNamed(IDR_PANEL_CLOSE_H).ToNSImage()
 244       pressedImage:rb.GetNativeImageNamed(IDR_PANEL_CLOSE_C).ToNSImage()
 245       toolTip:l10n_util::GetNSStringWithFixup(IDS_PANEL_CLOSE_TOOLTIP)];
 246
 247   // Iniitalize the minimize and restore buttons.
 248   [self initializeImageButton:minimizeButton_
 249       image:rb.GetNativeImageNamed(IDR_PANEL_MINIMIZE).ToNSImage()
 250       hoverImage:rb.GetNativeImageNamed(IDR_PANEL_MINIMIZE_H).ToNSImage()
 251       pressedImage:rb.GetNativeImageNamed(IDR_PANEL_MINIMIZE_C).ToNSImage()
 252       toolTip:l10n_util::GetNSStringWithFixup(IDS_PANEL_MINIMIZE_TOOLTIP)];
 253
 254   [self initializeImageButton:restoreButton_
 255       image:rb.GetNativeImageNamed(IDR_PANEL_RESTORE).ToNSImage()
 256       hoverImage:rb.GetNativeImageNamed(IDR_PANEL_RESTORE_H).ToNSImage()
 257       pressedImage:rb.GetNativeImageNamed(IDR_PANEL_RESTORE_C).ToNSImage()
 258       toolTip:l10n_util::GetNSStringWithFixup(IDS_PANEL_RESTORE_TOOLTIP)];
 259
 260   [controller_ updateTitleBarMinimizeRestoreButtonVisibility];
 261
 262   [self updateCustomButtonsLayout];
 263
 264   // Set autoresizing behavior: glued to edges on left, top and right.
 265   [self setAutoresizingMask:(NSViewMinYMargin | NSViewWidthSizable)];
 266
 267   [[NSNotificationCenter defaultCenter]
 268       addObserver:self
 269          selector:@selector(didChangeFrame:)
 270              name:NSViewFrameDidChangeNotification
 271            object:self];
 272   [[NSNotificationCenter defaultCenter]
 273       addObserver:self
 274          selector:@selector(didChangeMainWindow:)
 275              name:NSWindowDidBecomeMainNotification
 276            object:[self window]];
 277   [[NSNotificationCenter defaultCenter]
 278       addObserver:self
 279          selector:@selector(didChangeMainWindow:)
 280              name:NSWindowDidResignMainNotification
 281            object:[self window]];
 282 }
 283
 284 - (void)initializeImageButton:(HoverImageButton*)button
 285                         image:(NSImage*)image
 286                    hoverImage:(NSImage*)hoverImage
 287                  pressedImage:(NSImage*)pressedImage
 288                       toolTip:(NSString*)toolTip {
 289   [button setDefaultImage:image];
 290   [button setHoverImage:hoverImage];
 291   [button setPressedImage:pressedImage];
 292   [button setToolTip:toolTip];
 293   [[button cell] setHighlightsBy:NSNoCellMask];
 294 }
 295
 296 - (void)setTitle:(NSString*)newTitle {
 297   [title_ setStringValue:newTitle];
 298   [self updateIconAndTitleLayout];
 299 }
 300
 301 - (void)setIcon:(NSView*)newIcon {
 302   [icon_ removeFromSuperview];
 303   icon_ = newIcon;
 304   if (icon_) {
 305     [self addSubview:icon_ positioned:NSWindowBelow relativeTo:overlay_];
 306     [icon_ setWantsLayer:YES];
 307   }
 308   [self updateIconAndTitleLayout];
 309 }
 310
 311 - (NSView*)icon {
 312   return icon_;
 313 }
 314
 315 - (void)setMinimizeButtonVisibility:(BOOL)visible {
 316   [minimizeButton_ setHidden:!visible];
 317 }
 318
 319 - (void)setRestoreButtonVisibility:(BOOL)visible {
 320   [restoreButton_ setHidden:!visible];
 321 }
 322
 323 - (void)updateCustomButtonsLayout {
 324   NSRect bounds = [self bounds];
 325   NSRect closeButtonFrame = [customCloseButton_ frame];
 326   closeButtonFrame.size.width = panel::kPanelButtonSize;
 327   closeButtonFrame.size.height = panel::kPanelButtonSize;
 328   closeButtonFrame.origin.x =
 329       NSWidth(bounds) - NSWidth(closeButtonFrame) - panel::kButtonPadding;
 330   closeButtonFrame.origin.y =
 331       (NSHeight(bounds) - NSHeight(closeButtonFrame)) / 2;
 332   [customCloseButton_ setFrame:closeButtonFrame];
 333
 334   NSRect buttonFrame = [minimizeButton_ frame];
 335   buttonFrame.size.width = panel::kPanelButtonSize;
 336   buttonFrame.size.height = panel::kPanelButtonSize;
 337   buttonFrame.origin.x =
 338       closeButtonFrame.origin.x - NSWidth(buttonFrame) - panel::kButtonPadding;
 339   buttonFrame.origin.y = (NSHeight(bounds) - NSHeight(buttonFrame)) / 2;
 340   [minimizeButton_ setFrame:buttonFrame];
 341   [restoreButton_ setFrame:buttonFrame];
 342 }
 343
 344 - (void)updateIconAndTitleLayout {
 345   NSRect iconFrame = [icon_ frame];
 346   // NSTextField for title_ is set to Layout:Truncate, LineBreaks:TruncateTail
 347   // in Interface Builder so it is sized in a single-line mode.
 348   [title_ sizeToFit];
 349   NSRect titleFrame = [title_ frame];
 350   // Only one of minimize/restore button is visible at a time so just allow for
 351   // the width of one of them.
 352   NSRect minimizeRestoreButtonFrame = [minimizeButton_ frame];
 353   NSRect bounds = [self bounds];
 354
 355   // Place the icon and title at the left edge of the titlebar.
 356   int iconWidth = NSWidth(iconFrame);
 357   int titleWidth = NSWidth(titleFrame);
 358   int availableWidth = minimizeRestoreButtonFrame.origin.x -
 359       panel::kTitleAndButtonPadding;
 360
 361   int paddings = panel::kTitlebarLeftPadding + panel::kIconAndTitlePadding;
 362   if (paddings + iconWidth + titleWidth > availableWidth)
 363     titleWidth = availableWidth - iconWidth - paddings;
 364   if (titleWidth < 0)
 365     titleWidth = 0;
 366
 367   iconFrame.origin.x = panel::kTitlebarLeftPadding;
 368   iconFrame.origin.y = (NSHeight(bounds) - NSHeight(iconFrame)) / 2;
 369   [icon_ setFrame:iconFrame];
 370
 371   titleFrame.origin.x = paddings + iconWidth;
 372   // In bottom-heavy text labels, let's compensate for occasional integer
 373   // rounding to avoid text label to feel too low.
 374   titleFrame.origin.y = (NSHeight(bounds) - NSHeight(titleFrame)) / 2 + 2;
 375   titleFrame.size.width = titleWidth;
 376   [title_ setFrame:titleFrame];
 377 }
 378
 379 // PanelManager controls size/position of the window.
 380 - (BOOL)mouseDownCanMoveWindow {
 381   return NO;
 382 }
 383
 384 - (BOOL)acceptsFirstMouse:(NSEvent*)event {
 385   return YES;
 386 }
 387
 388 - (void)didChangeFrame:(NSNotification*)notification {
 389   // Update buttons first because title layout depends on buttons layout.
 390   [self updateCustomButtonsLayout];
 391   [self updateIconAndTitleLayout];
 392 }
 393
 394 - (void)didChangeMainWindow:(NSNotification*)notification {
 395   [self setNeedsDisplay:YES];
 396 }
 397
 398 - (void)mouseDown:(NSEvent*)event {
 399   [dragController_ mouseDown:event];
 400 }
 401
 402 - (void)mouseUp:(NSEvent*)event {
 403   [dragController_ mouseUp:event];
 404
 405   if ([event clickCount] == 1)
 406     [controller_ onTitlebarMouseClicked:[event modifierFlags]];
 407   else if ([event clickCount] == 2)
 408     [controller_ onTitlebarDoubleClicked:[event modifierFlags]];
 409 }
 410
 411 - (void)mouseDragged:(NSEvent*)event {
 412   [dragController_ mouseDragged:event];
 413 }
 414
 415 // MouseDragControllerClient implementaiton
 416
 417 - (void)prepareForDrag {
 418 }
 419
 420 - (void)dragStarted:(NSPoint)initialMouseLocation {
 421   NSPoint initialMouseLocationScreen =
 422       [[self window] convertBaseToScreen:initialMouseLocation];
 423   [controller_ startDrag:initialMouseLocationScreen];
 424 }
 425
 426 - (void)dragEnded:(BOOL)cancelled {
 427   [controller_ endDrag:cancelled];
 428 }
 429
 430 - (void)dragProgress:(NSPoint)mouseLocation {
 431   NSPoint mouseLocationScreen =
 432       [[self window] convertBaseToScreen:mouseLocation];
 433   [controller_ drag:mouseLocationScreen];
 434 }
 435
 436 - (void)cleanupAfterDrag {
 437 }
 438
 439 // End of MouseDragControllerClient implementaiton
 440
 441 - (void)drawAttention {
 442   if (isDrawingAttention_)
 443     return;
 444   isDrawingAttention_ = YES;
 445
 446   [self startGlintAnimation];
 447 }
 448
 449 - (void)stopDrawingAttention {
 450   if (!isDrawingAttention_)
 451     return;
 452   isDrawingAttention_ = NO;
 453
 454   [self stopGlintAnimation];
 455   [self setNeedsDisplay:YES];
 456 }
 457
 458 - (BOOL)isDrawingAttention {
 459   return isDrawingAttention_;
 460 }
 461
 462 - (void)startGlintAnimation {
 463   glintCounter_ = 0;
 464   [self restartGlintAnimation:nil];
 465 }
 466
 467 - (void)stopGlintAnimation {
 468   if (glintAnimationTimer_.get()) {
 469     [glintAnimationTimer_ invalidate];
 470     glintAnimationTimer_.reset();
 471   }
 472   if ([glintAnimation_ isAnimating])
 473     [glintAnimation_ stopAnimation];
 474 }
 475
 476 - (void)restartGlintAnimation:(NSTimer*)timer {
 477   if (!glintAnimation_.get()) {
 478     glintAnimation_.reset(
 479         [[RepaintAnimation alloc] initWithView:self
 480                                       duration:kGlintAnimationDuration]);
 481     [glintAnimation_ setDelegate:self];
 482   }
 483   [glintAnimation_ startAnimation];
 484 }
 485
 486 // NSAnimationDelegate method.
 487 - (void)animationDidEnd:(NSAnimation*)animation {
 488   if (animation != glintAnimation_.get())
 489     return;
 490   if (glintCounter_ >= kNumberOfGlintRepeats)
 491     return;
 492   glintCounter_++;
 493   // Restart after a timeout.
 494   glintAnimationTimer_.reset([[NSTimer
 495       scheduledTimerWithTimeInterval:kGlintRepeatIntervalSeconds
 496                               target:self
 497                             selector:@selector(restartGlintAnimation:)
 498                             userInfo:nil
 499                              repeats:NO] retain]);
 500 }
 501
 502 // NSAnimationDelegate method.
 503 - (float)animation:(NSAnimation *)animation
 504   valueForProgress:(NSAnimationProgress)progress {
 505   if (animation != glintAnimation_.get())
 506     return progress;
 507
 508   // Converts 0..1 progression into a sharper raise/fall.
 509   float result = progress < 0.5 ? progress : 1.0 - progress;
 510   result = 4.0 * result * result;
 511   return result;
 512 }
 513
 514 // (Private/TestingAPI)
 515 - (PanelWindowControllerCocoa*)controller {
 516   return controller_;
 517 }
 518
 519 - (NSTextField*)title {
 520   return title_;
 521 }
 522
 523 - (void)simulateCloseButtonClick {
 524   [[customCloseButton_ cell] performClick:customCloseButton_];
 525 }
 526
 527 - (void)pressLeftMouseButtonTitlebar:(NSPoint)mouseLocation
 528                            modifiers:(int)modifierFlags {
 529   // Override the drag controller. It's ok to create a new one for each drag.
 530   dragController_.reset([[TestDragController alloc] initWithClient:self]);
 531   // Convert from Cocoa's screen coordinates to base coordinates since the mouse
 532   // event takes base (NSWindow) coordinates.
 533   NSPoint mouseLocationWindow =
 534       [[self window] convertScreenToBase:mouseLocation];
 535   NSEvent* event = MakeMouseEvent(NSLeftMouseDown, mouseLocationWindow,
 536       modifierFlags, 0);
 537   [self mouseDown:event];
 538 }
 539
 540 - (void)releaseLeftMouseButtonTitlebar:(int)modifierFlags {
 541   NSEvent* event = MakeMouseEvent(NSLeftMouseUp, NSZeroPoint, modifierFlags, 1);
 542   [self mouseUp:event];
 543 }
 544
 545 - (void)dragTitlebar:(NSPoint)mouseLocation {
 546   // Convert from Cocoa's screen coordinates to base coordinates since the mouse
 547   // event takes base (NSWindow) coordinates.
 548   NSPoint mouseLocationWindow =
 549       [[self window] convertScreenToBase:mouseLocation];
 550   NSEvent* event =
 551       MakeMouseEvent(NSLeftMouseDragged, mouseLocationWindow, 0, 0);
 552   [self mouseDragged:event];
 553 }
 554
 555 - (void)cancelDragTitlebar {
 556   [self dragEnded:YES];
 557 }
 558
 559 - (void)finishDragTitlebar {
 560   [self dragEnded:NO];
 561 }
 562
 563 - (NSButton*)closeButton {
 564   return closeButton_;
 565 }
 566
 567 - (NSButton*)minimizeButton {
 568   return minimizeButton_;
 569 }
 570
 571 - (NSButton*)restoreButton {
 572   return restoreButton_;
 573 }
 574
 575 @end
 576