Use a real download item....

chrome/browser/cocoa/download_item_cell.mm

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/cocoa/download_item_cell.h"
+
+#include "app/gfx/text_elider.h"
+#include "app/l10n_util.h"
+#include "base/mac_util.h"
+#include "base/sys_string_conversions.h"
+#import "chrome/browser/cocoa/download_item_cell.h"
+#include "chrome/browser/download/download_item_model.h"
+#include "chrome/browser/download/download_manager.h"
+#import "third_party/GTM/AppKit/GTMTheme.h"
+
+namespace {
+
+// Distance from top border to icon
+const CGFloat kImagePaddingTop = 1;
+
+// Distance from left border to icon
+const CGFloat kImagePaddingLeft = 1;
+
+// Width of icon
+const CGFloat kImageWidth = 32;
+
+// Height of icon
+const CGFloat kImageHeight = 32;
+
+// x coordinate of download name string, in view coords
+const CGFloat kTextPosLeft = kImagePaddingLeft + kImageWidth + 1;
+
+// Distance from end of download name string to dropdown area
+const CGFloat kTextPaddingRight = 3;
+
+// y coordinate of download name string, in view coords, when status message
+// is visible
+const CGFloat kPrimaryTextPosTop = 5;
+
+// y coordinate of download name string, in view coords, when status message
+// is not visible
+const CGFloat kPrimaryTextOnlyPosTop = 10;
+
+// y coordinate of status message, in view coords
+const CGFloat kSecondaryTextPosTop = 17;
+
+// Width of dropdown area on the right
+const CGFloat kDropdownAreaWidth = 18;
+
+// Width of dropdown arrow
+const CGFloat kDropdownArrowWidth = 5;
+
+// Height of dropdown arrow
+const CGFloat kDropdownArrowHeight = 3;
+
+// Duration of the two-lines-to-one-line animation, in seconds
+NSTimeInterval kHideStatusDuration = 0.3;
+
+}
+
+// This is a helper class to animate the fading out of the status text.
+@interface HideSecondaryTitleAnimation : NSAnimation {
+  DownloadItemCell* cell_;
+}
+- (id)initWithDownloadItemCell:(DownloadItemCell*)cell;
+@end
+
+@interface DownloadItemCell(Private)
+- (void)updateTrackingAreas:(id)sender;
+- (void)hideSecondaryTitle;
+- (void)animationProgressed:(NSAnimationProgress)progress;
+@end
+
+@implementation DownloadItemCell
+
+@synthesize secondaryTitle = secondaryTitle_;
+@synthesize secondaryFont = secondaryFont_;
+
+- (void)setInitialState {
+  isStatusTextVisible_ = NO;
+  titleY_ = kPrimaryTextPosTop;
+  statusAlpha_ = 1.0;
+
+  [self setFont:[NSFont systemFontOfSize:
+      [NSFont systemFontSizeForControlSize:NSSmallControlSize]]];
+  [self setSecondaryFont:[NSFont systemFontOfSize:
+      [NSFont systemFontSizeForControlSize:NSMiniControlSize]]];
+
+  [self updateTrackingAreas:self];
+  [[NSNotificationCenter defaultCenter]
+      addObserver:self
+         selector:@selector(updateTrackingAreas:)
+             name:NSViewFrameDidChangeNotification
+           object:[self controlView]];
+}
+
+// For nib instantiations
+- (id)initWithCoder:(NSCoder*)decoder {
+  if ((self = [super initWithCoder:decoder])) {
+    [self setInitialState];
+  }
+  return self;
+}
+
+// For programmatic instantiations
+- (id)initTextCell:(NSString *)string {
+  if ((self = [super initTextCell:string])) {
+    [self setInitialState];
+  }
+  return self;
+}
+
+- (void)dealloc {
+  [[NSNotificationCenter defaultCenter] removeObserver:self];
+  [secondaryTitle_ release];
+  [secondaryFont_ release];
+  [super dealloc];
+}
+
+- (void)setStateFromDownload:(BaseDownloadItemModel*)downloadModel {
+  // Set name and icon of download.
+  downloadPath_ = downloadModel->download()->GetFileName();
+
+  // TODO(paulg): Use IconManager for loading icons on the file thread
+  // (crbug.com/16226).
+  NSString* extension = base::SysUTF8ToNSString(downloadPath_.Extension());
+  NSImage* icon = [[NSWorkspace sharedWorkspace] iconForFileType:extension];
+  [self setImage:icon];
+
+  std::wstring statusText = downloadModel->GetStatusText();
+  if (statusText.empty()) {
+    // Remove the status text label.
+    [self hideSecondaryTitle];
+    isStatusTextVisible_ = NO;
+  } else {
+    // Set status text.
+    NSString* statusString = base::SysWideToNSString(statusText);
+    [self setSecondaryTitle:statusString];
+    isStatusTextVisible_ = YES;
+  }
+}
+
+- (void)updateTrackingAreas:(id)sender {
+  if (trackingAreaButton_) {
+    [[self controlView] removeTrackingArea:trackingAreaButton_.get()];
+      trackingAreaButton_.reset(nil);
+  }
+  if (trackingAreaDropdown_) {
+    [[self controlView] removeTrackingArea:trackingAreaDropdown_.get()];
+      trackingAreaDropdown_.reset(nil);
+  }
+
+  // Use two distinct tracking rects for left and right parts.
+  NSRect bounds = [[self controlView] bounds];
+  NSRect buttonRect, dropdownRect;
+  NSDivideRect(bounds, &dropdownRect, &buttonRect,
+      kDropdownAreaWidth, NSMaxXEdge);
+
+    trackingAreaButton_.reset([[NSTrackingArea alloc]
+                    initWithRect:buttonRect
+                         options:(NSTrackingMouseEnteredAndExited |
+                                  NSTrackingActiveInActiveApp)
+                           owner:self
+                      userInfo:nil]);
+  [[self controlView] addTrackingArea:trackingAreaButton_.get()];
+
+    trackingAreaDropdown_.reset([[NSTrackingArea alloc]
+                    initWithRect:dropdownRect
+                         options:(NSTrackingMouseEnteredAndExited |
+                                  NSTrackingActiveInActiveApp)
+                           owner:self
+                      userInfo:nil]);
+  [[self controlView] addTrackingArea:trackingAreaDropdown_.get()];
+}
+
+- (void)setShowsBorderOnlyWhileMouseInside:(BOOL)showOnly {
+  // Override to make sure it doesn't do anything if it's called accidentally.
+}
+
+- (void)mouseEntered:(NSEvent*)theEvent {
+  mouseInsideCount_++;
+  if ([theEvent trackingArea] == trackingAreaButton_.get())
+    mousePosition_ = kDownloadItemMouseOverButtonPart;
+  else if ([theEvent trackingArea] == trackingAreaDropdown_.get())
+    mousePosition_ = kDownloadItemMouseOverButtonPart;
+  [[self controlView] setNeedsDisplay:YES];
+}
+
+- (void)mouseExited:(NSEvent *)theEvent {
+  mouseInsideCount_--;
+  if (mouseInsideCount_ == 0)
+    mousePosition_ = kDownloadItemMouseOutside;
+  [[self controlView] setNeedsDisplay:YES];
+}
+
+- (BOOL)isMouseInside {
+  return mousePosition_ != kDownloadItemMouseOutside;
+}
+
+- (BOOL)isMouseOverButtonPart {
+  return mousePosition_ == kDownloadItemMouseOverButtonPart;
+}
+
+- (BOOL)isButtonPartPressed {
+  return [self isHighlighted]
+      && mousePosition_ == kDownloadItemMouseOverButtonPart;
+}
+
+- (BOOL)isMouseOverDropdownPart {
+  return mousePosition_ == kDownloadItemMouseOverButtonPart;
+}
+
+- (BOOL)isDropdownPartPressed {
+  return [self isHighlighted]
+      && mousePosition_ == kDownloadItemMouseOverButtonPart;
+}
+
+- (NSBezierPath*)leftRoundedPath:(CGFloat)radius inRect:(NSRect)rect {
+
+  NSPoint topLeft = NSMakePoint(NSMinX(rect), NSMaxY(rect));
+  NSPoint topRight = NSMakePoint(NSMaxX(rect), NSMaxY(rect));
+  NSPoint bottomRight = NSMakePoint(NSMaxX(rect) , NSMinY(rect));
+
+  NSBezierPath* path = [NSBezierPath bezierPath];
+  [path moveToPoint:topRight];
+  [path appendBezierPathWithArcFromPoint:topLeft
+                                 toPoint:rect.origin
+                                  radius:radius];
+  [path appendBezierPathWithArcFromPoint:rect.origin
+                                 toPoint:bottomRight
+                                 radius:radius];
+  [path lineToPoint:bottomRight];
+  return path;
+}
+
+- (NSBezierPath*)rightRoundedPath:(CGFloat)radius inRect:(NSRect)rect {
+
+  NSPoint topLeft = NSMakePoint(NSMinX(rect), NSMaxY(rect));
+  NSPoint topRight = NSMakePoint(NSMaxX(rect), NSMaxY(rect));
+  NSPoint bottomRight = NSMakePoint(NSMaxX(rect), NSMinY(rect));
+
+  NSBezierPath* path = [NSBezierPath bezierPath];
+  [path moveToPoint:rect.origin];
+  [path appendBezierPathWithArcFromPoint:bottomRight
+                                toPoint:topRight
+                                  radius:radius];
+  [path appendBezierPathWithArcFromPoint:topRight
+                                toPoint:topLeft
+                                 radius:radius];
+  [path lineToPoint:topLeft];
+  [path closePath];  // Right path is closed
+  return path;
+}
+
+- (void)elideTitle:(int)availableWidth {
+  NSFont* font = [self font];
+  gfx::Font font_chr =
+      gfx::Font::CreateFont(base::SysNSStringToWide([font fontName]),
+                            [font pointSize]);
+
+  NSString* titleString = base::SysWideToNSString(
+      ElideFilename(downloadPath_, font_chr, availableWidth));
+  [self setTitle:titleString];
+}
+
+- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
+
+  // Constants from Cole.  Will kConstan them once the feedback loop
+  // is complete.
+  NSRect drawFrame = NSInsetRect(cellFrame, 0.5, 0.5);
+  NSRect innerFrame = NSInsetRect(cellFrame, 1, 1);
+
+  const float radius = 3.5;
+  NSWindow* window = [controlView window];
+  BOOL active = [window isKeyWindow] || [window isMainWindow];
+
+  GTMTheme* theme = [controlView gtm_theme];
+
+  NSRect buttonDrawRect, dropdownDrawRect;
+  NSDivideRect(drawFrame, &dropdownDrawRect, &buttonDrawRect,
+      kDropdownAreaWidth, NSMaxXEdge);
+
+  NSRect buttonInnerRect, dropdownInnerRect;
+  NSDivideRect(innerFrame, &dropdownInnerRect, &buttonInnerRect,
+      kDropdownAreaWidth, NSMaxXEdge);
+
+  NSBezierPath* buttonInnerPath = [self
+      leftRoundedPath:radius inRect:buttonDrawRect];
+  NSBezierPath* buttonOuterPath = [self
+      leftRoundedPath:(radius + 1)
+               inRect:NSInsetRect(buttonDrawRect, -1, -1)];
+
+  NSBezierPath* dropdownInnerPath = [self
+      rightRoundedPath:radius inRect:dropdownDrawRect];
+  NSBezierPath* dropdownOuterPath = [self
+      rightRoundedPath:(radius + 1)
+                inRect:NSInsetRect(dropdownDrawRect, -1, -1)];
+
+  // Stroke the borders and appropriate fill gradient. If we're borderless,
+  // the only time we want to draw the inner gradient is if we're highlighted.
+  if ([self isHighlighted] || [self isMouseInside]) {
+    [self drawBorderAndFillForTheme:theme
+                        controlView:controlView
+                          outerPath:buttonOuterPath
+                          innerPath:buttonInnerPath
+              showHighlightGradient:[self isMouseOverButtonPart]
+                showClickedGradient:[self isButtonPartPressed]
+                             active:active
+                          cellFrame:cellFrame];
+
+    [self drawBorderAndFillForTheme: theme
+                        controlView:controlView
+                          outerPath:dropdownOuterPath
+                          innerPath:dropdownInnerPath
+              showHighlightGradient:[self isMouseOverDropdownPart]
+                showClickedGradient:[self isDropdownPartPressed]
+                             active:active
+                          cellFrame:cellFrame];
+  }
+
+  [self drawInteriorWithFrame:innerFrame inView:controlView];
+}
+
+- (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
+  // Draw title
+  [self elideTitle:cellFrame.size.width -
+      (kTextPosLeft + kTextPaddingRight + kDropdownAreaWidth)];
+
+  NSColor* color = [self isButtonPartPressed]
+      ? [NSColor alternateSelectedControlTextColor] : [NSColor textColor];
+  NSString* primaryText = [self title];
+
+  NSDictionary* primaryTextAttributes = [NSDictionary
+      dictionaryWithObjectsAndKeys:
+      color, NSForegroundColorAttributeName,
+      [self font], NSFontAttributeName,
+      nil];
+  NSPoint primaryPos = NSMakePoint(
+      cellFrame.origin.x + kTextPosLeft,
+      titleY_);
+
+  [primaryText drawAtPoint:primaryPos withAttributes:primaryTextAttributes];
+
+  // Draw secondary title, if any
+  if ([self secondaryTitle] != nil && statusAlpha_ > 0) {
+    NSString* secondaryText = [self secondaryTitle];
+    NSColor* secondaryColor = [color colorWithAlphaComponent:statusAlpha_];
+    NSDictionary* secondaryTextAttributes = [NSDictionary
+        dictionaryWithObjectsAndKeys:
+        secondaryColor, NSForegroundColorAttributeName,
+        [self secondaryFont], NSFontAttributeName,
+        nil];
+    NSPoint secondaryPos = NSMakePoint(
+        cellFrame.origin.x + kTextPosLeft,
+        kSecondaryTextPosTop);
+    [secondaryText drawAtPoint:secondaryPos
+        withAttributes:secondaryTextAttributes];
+  }
+
+  // Draw icon
+  NSRect imageRect = NSZeroRect;
+  imageRect.size = [[self image] size];
+  [[self image] setFlipped:[controlView isFlipped]];
+  [[self image] drawInRect:[self imageRectForBounds:cellFrame]
+                  fromRect:imageRect
+                 operation:NSCompositeSourceOver
+                  fraction:[self isEnabled] ? 1.0 : 0.5];
+
+  // Popup arrow. Put center of mass of the arrow in the center of the
+  // dropdown area.
+  CGFloat cx = NSMaxX(cellFrame) - kDropdownAreaWidth/2;
+  CGFloat cy = NSMidY(cellFrame);
+  NSPoint p1 = NSMakePoint(cx - kDropdownArrowWidth/2,
+                           cy - kDropdownArrowHeight/3);
+  NSPoint p2 = NSMakePoint(cx + kDropdownArrowWidth/2,
+                           cy - kDropdownArrowHeight/3);
+  NSPoint p3 = NSMakePoint(cx, cy + kDropdownArrowHeight*2/3);
+  NSBezierPath *triangle = [NSBezierPath bezierPath];
+  [triangle moveToPoint:p1];
+  [triangle lineToPoint:p2];
+  [triangle lineToPoint:p3];
+  [triangle closePath];
+
+  NSColor* fill = [self isDropdownPartPressed]
+      ? [NSColor alternateSelectedControlTextColor] : [NSColor textColor];
+  [fill setFill];
+  [triangle fill];
+}
+
+- (NSRect)imageRectForBounds:(NSRect)cellFrame {
+  return NSMakeRect(
+      kImagePaddingLeft, kImagePaddingTop, kImageWidth, kImageHeight);
+}
+
+- (void)hideSecondaryTitle {
+  if (isStatusTextVisible_) {
+    // No core animation -- text in CA layers is not subpixel antialiased :-/
+    hideStatusAnimation_.reset([[HideSecondaryTitleAnimation alloc]
+        initWithDownloadItemCell:self]);
+    [hideStatusAnimation_.get() setDelegate:self];
+    [hideStatusAnimation_.get() startAnimation];
+  } else {
+    // If the download is done so quickly that the status line is never visible,
+    // don't show an animation
+    [self animationProgressed:1.0];
+  }
+}
+
+- (void)animationProgressed:(NSAnimationProgress)progress {
+  titleY_ = progress*kPrimaryTextOnlyPosTop + (1 - progress)*kPrimaryTextPosTop;
+  statusAlpha_ = 1 - progress;
+  [[self controlView] setNeedsDisplay:YES];
+}
+
+- (void)animationDidEnd:(NSAnimation *)animation {
+  hideStatusAnimation_.reset();
+}
+
+@end
+
+@implementation HideSecondaryTitleAnimation
+
+- (id)initWithDownloadItemCell:(DownloadItemCell*)cell {
+  if ((self = [super initWithDuration:kHideStatusDuration
+                       animationCurve:NSAnimationEaseIn])) {
+    cell_ = cell;
+    [self setAnimationBlockingMode:NSAnimationNonblocking];
+  }
+  return self;
+}
+
+- (void)setCurrentProgress:(NSAnimationProgress)progress {
+  [super setCurrentProgress:progress];
+  [cell_ animationProgressed:progress];
+}
+
+@end