src/ui/base/cocoa/underlay_opengl_hosting_window.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 "ui/base/cocoa/underlay_opengl_hosting_window.h"
   6
   7 #include "base/logging.h"
   8
   9 @implementation UnderlayOpenGLHostingWindow
  10
  11 - (id)initWithContentRect:(NSRect)contentRect
  12                 styleMask:(NSUInteger)windowStyle
  13                   backing:(NSBackingStoreType)bufferingType
  14                     defer:(BOOL)deferCreation {
  15   // It is invalid to create windows with zero width or height. It screws things
  16   // up royally:
  17   // - It causes console spew: <http://crbug.com/78973>
  18   // - It breaks Expose: <http://sourceforge.net/projects/heat-meteo/forums/forum/268087/topic/4582610>
  19   //
  20   // This is a banned practice
  21   // <http://www.chromium.org/developers/coding-style/cocoa-dos-and-donts>. Do
  22   // not do this. Use kWindowSizeDeterminedLater in
  23   // ui/base/cocoa/window_size_constants.h instead.
  24   //
  25   // (This is checked here because UnderlayOpenGLHostingWindow is the base of
  26   // most Chromium windows, not because this is related to its functionality.)
  27   DCHECK(!NSIsEmptyRect(contentRect));
  28   self = [super initWithContentRect:contentRect
  29                           styleMask:windowStyle
  30                             backing:bufferingType
  31                              defer:deferCreation];
  32   return self;
  33 }
  34
  35 @end