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 #include "ui/snapshot/snapshot.h" 6 7 #import <Cocoa/Cocoa.h> 8 9 #include "base/mac/scoped_nsobject.h" 10 #include "base/mac/sdk_forward_declarations.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "testing/platform_test.h" 13 #include "ui/gfx/rect.h" 14 15 namespace ui { 16 namespace { 17 18 typedef PlatformTest GrabWindowSnapshotTest; 19 20 TEST_F(GrabWindowSnapshotTest, TestGrabWindowSnapshot) { 21 // Launch a test window so we can take a snapshot. 22 NSRect frame = NSMakeRect(0, 0, 400, 400); 23 base::scoped_nsobject<NSWindow> window( 24 [[NSWindow alloc] initWithContentRect:frame 25 styleMask:NSBorderlessWindowMask 26 backing:NSBackingStoreBuffered 27 defer:NO]); 28 [window setBackgroundColor:[NSColor whiteColor]]; 29 [window makeKeyAndOrderFront:NSApp]; 30 31 scoped_ptr<std::vector<unsigned char> > png_representation( 32 new std::vector<unsigned char>); 33 gfx::Rect bounds = gfx::Rect(0, 0, frame.size.width, frame.size.height); 34 EXPECT_TRUE(ui::GrabWindowSnapshot(window, png_representation.get(), 35 bounds)); 36 37 // Copy png back into NSData object so we can make sure we grabbed a png. 38 base::scoped_nsobject<NSData> image_data( 39 [[NSData alloc] initWithBytes:&(*png_representation)[0] 40 length:png_representation->size()]); 41 NSBitmapImageRep* rep = [NSBitmapImageRep imageRepWithData:image_data.get()]; 42 EXPECT_TRUE([rep isKindOfClass:[NSBitmapImageRep class]]); 43 CGFloat scaleFactor = 1.0f; 44 if ([window respondsToSelector:@selector(backingScaleFactor)]) 45 scaleFactor = [window backingScaleFactor]; 46 EXPECT_EQ(400 * scaleFactor, CGImageGetWidth([rep CGImage])); 47 NSColor* color = [rep colorAtX:200 * scaleFactor y:200 * scaleFactor]; 48 CGFloat red = 0, green = 0, blue = 0, alpha = 0; 49 [color getRed:&red green:&green blue:&blue alpha:&alpha]; 50 EXPECT_GE(red + green + blue, 3.0); 51 } 52 53 } // namespace 54 } // namespace ui 55
