chrome/browser/ui/cocoa/find_bar/find_bar_view.mm

   1 // Copyright (c) 2011 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/find_bar/find_bar_view.h"
   6
   7 #import "chrome/browser/ui/cocoa/nsview_additions.h"
   8 #import "chrome/browser/ui/cocoa/themed_window.h"
   9 #import "chrome/browser/ui/cocoa/url_drop_target.h"
  10 #import "chrome/browser/ui/cocoa/view_id_util.h"
  11 #import "ui/base/cocoa/nsgraphics_context_additions.h"
  12 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
  13
  14 namespace {
  15 CGFloat kCurveSize = 8;
  16 }  // end namespace
  17
  18 @implementation FindBarView
  19
  20 - (id)initWithFrame:(NSRect)frame {
  21   if ((self = [super initWithFrame:frame])) {
  22     // Give this view its own layer so that it can appear over the web contents
  23     // view's layer. Layer squashing is not necessary for this view because
  24     // NSTextField will correctly anti-alias text on 10.8 and beyond.
  25     [self cr_setWantsLayer:YES];
  26   }
  27   return self;
  28 }
  29
  30 - (void)awakeFromNib {
  31   // Register for all the drag types handled by the RWHVCocoa.
  32   [self registerForDraggedTypes:[URLDropTargetHandler handledDragTypes]];
  33 }
  34
  35 - (void)drawRect:(NSRect)rect {
  36   const CGFloat lineWidth = [self cr_lineWidth];
  37   const CGFloat halfLineWidth = lineWidth / 2.0;
  38
  39   // TODO(rohitrao): Make this prettier.
  40   rect = NSInsetRect([self bounds], halfLineWidth, halfLineWidth);
  41   rect = NSOffsetRect(rect, 0, lineWidth);
  42
  43   NSPoint topLeft = NSMakePoint(NSMinX(rect), NSMaxY(rect));
  44   NSPoint topRight = NSMakePoint(NSMaxX(rect), NSMaxY(rect));
  45   NSPoint midLeft1 =
  46       NSMakePoint(NSMinX(rect) + kCurveSize, NSMaxY(rect) - kCurveSize);
  47   NSPoint midLeft2 =
  48       NSMakePoint(NSMinX(rect) + kCurveSize, NSMinY(rect) + kCurveSize);
  49   NSPoint midRight1 =
  50       NSMakePoint(NSMaxX(rect) - kCurveSize, NSMinY(rect) + kCurveSize);
  51   NSPoint midRight2 =
  52       NSMakePoint(NSMaxX(rect) - kCurveSize, NSMaxY(rect) - kCurveSize);
  53   NSPoint bottomLeft =
  54       NSMakePoint(NSMinX(rect) + (2 * kCurveSize), NSMinY(rect));
  55   NSPoint bottomRight =
  56       NSMakePoint(NSMaxX(rect) - (2 * kCurveSize), NSMinY(rect));
  57
  58   NSBezierPath* path = [NSBezierPath bezierPath];
  59   [path moveToPoint:topLeft];
  60   [path curveToPoint:midLeft1
  61         controlPoint1:NSMakePoint(midLeft1.x, topLeft.y)
  62         controlPoint2:NSMakePoint(midLeft1.x, topLeft.y)];
  63   [path lineToPoint:midLeft2];
  64   [path curveToPoint:bottomLeft
  65         controlPoint1:NSMakePoint(midLeft2.x, bottomLeft.y)
  66         controlPoint2:NSMakePoint(midLeft2.x, bottomLeft.y)];
  67
  68   [path lineToPoint:bottomRight];
  69   [path curveToPoint:midRight1
  70         controlPoint1:NSMakePoint(midRight1.x, bottomLeft.y)
  71         controlPoint2:NSMakePoint(midRight1.x, bottomLeft.y)];
  72   [path lineToPoint:midRight2];
  73   [path curveToPoint:topRight
  74         controlPoint1:NSMakePoint(midRight2.x, topLeft.y)
  75         controlPoint2:NSMakePoint(midRight2.x, topLeft.y)];
  76
  77   {
  78     gfx::ScopedNSGraphicsContextSaveGState scopedGState;
  79     NSGraphicsContext* context = [NSGraphicsContext currentContext];
  80     [path addClip];
  81
  82     // Set the pattern phase
  83     NSPoint position = [[self window]
  84         themeImagePositionForAlignment:THEME_IMAGE_ALIGN_WITH_TAB_STRIP];
  85     [context cr_setPatternPhase:position forView:self];
  86
  87     [super drawBackgroundWithOpaque:YES];
  88   }
  89
  90   [[self strokeColor] set];
  91   [path setLineWidth:lineWidth];
  92   [path stroke];
  93 }
  94
  95 // The findbar is mostly opaque, but has an 8px transparent border on the left
  96 // and right sides (see |kCurveSize|).  This is an artifact of the way it is
  97 // drawn.  We override hitTest to return nil for points in this transparent
  98 // area.
  99 - (NSView*)hitTest:(NSPoint)point {
 100   NSView* hitView = [super hitTest:point];
 101   if (hitView == self) {
 102     // |rect| is approximately equivalent to the opaque area of the findbar.
 103     NSRect rect = NSInsetRect([self bounds], kCurveSize, 0);
 104     if (!NSMouseInRect(point, rect, [self isFlipped]))
 105       return nil;
 106   }
 107
 108   return hitView;
 109 }
 110
 111 // Eat all mouse events, to prevent clicks from falling through to views below.
 112 - (void)mouseDown:(NSEvent *)theEvent {
 113 }
 114
 115 - (void)rightMouseDown:(NSEvent *)theEvent {
 116 }
 117
 118 - (void)otherMouseDown:(NSEvent *)theEvent {
 119 }
 120
 121 - (void)mouseUp:(NSEvent *)theEvent {
 122 }
 123
 124 - (void)rightMouseUp:(NSEvent *)theEvent {
 125 }
 126
 127 - (void)otherMouseUp:(NSEvent *)theEvent {
 128 }
 129
 130 - (void)mouseMoved:(NSEvent *)theEvent {
 131 }
 132
 133 - (void)mouseDragged:(NSEvent *)theEvent {
 134 }
 135
 136 - (void)rightMouseDragged:(NSEvent *)theEvent {
 137 }
 138
 139 - (void)otherMouseDragged:(NSEvent *)theEvent {
 140 }
 141
 142 // Eat drag operations, to prevent drags from going through to the views below.
 143 - (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)info {
 144   return NSDragOperationNone;
 145 }
 146
 147 // Specifies that mouse events over this view should be ignored by the
 148 // render host.
 149 - (BOOL)nonWebContentView {
 150   return YES;
 151 }
 152
 153 @end