ui/base/cursor/ozone/bitmap_cursor_factory_ozone.cc

   1 // Copyright 2014 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/base/cursor/ozone/bitmap_cursor_factory_ozone.h"
   6
   7 #include "base/logging.h"
   8 #include "third_party/skia/include/core/SkBitmap.h"
   9 #include "ui/base/cursor/cursors_aura.h"
  10
  11 namespace ui {
  12
  13 namespace {
  14
  15 BitmapCursorOzone* ToBitmapCursorOzone(PlatformCursor cursor) {
  16   return static_cast<BitmapCursorOzone*>(cursor);
  17 }
  18
  19 PlatformCursor ToPlatformCursor(BitmapCursorOzone* cursor) {
  20   return static_cast<PlatformCursor>(cursor);
  21 }
  22
  23 scoped_refptr<BitmapCursorOzone> CreateDefaultBitmapCursor(int type) {
  24   SkBitmap bitmap;
  25   gfx::Point hotspot;
  26   if (GetCursorBitmap(type, &bitmap, &hotspot))
  27     return new BitmapCursorOzone(bitmap, hotspot);
  28   return NULL;
  29 }
  30
  31 }  // namespace
  32
  33 BitmapCursorOzone::BitmapCursorOzone(const SkBitmap& bitmap,
  34                                      const gfx::Point& hotspot)
  35     : hotspot_(hotspot), frame_delay_ms_(0) {
  36   bitmaps_.push_back(bitmap);
  37 }
  38
  39 BitmapCursorOzone::BitmapCursorOzone(const std::vector<SkBitmap>& bitmaps,
  40                                      const gfx::Point& hotspot,
  41                                      int frame_delay_ms)
  42     : bitmaps_(bitmaps), hotspot_(hotspot), frame_delay_ms_(frame_delay_ms) {
  43   DCHECK_LT(0U, bitmaps.size());
  44   DCHECK_LE(0, frame_delay_ms);
  45 }
  46
  47 BitmapCursorOzone::~BitmapCursorOzone() {
  48 }
  49
  50 const gfx::Point& BitmapCursorOzone::hotspot() {
  51   return hotspot_;
  52 }
  53
  54 const SkBitmap& BitmapCursorOzone::bitmap() {
  55   return bitmaps_[0];
  56 }
  57
  58 const std::vector<SkBitmap>& BitmapCursorOzone::bitmaps() {
  59   return bitmaps_;
  60 }
  61
  62 int BitmapCursorOzone::frame_delay_ms() {
  63   return frame_delay_ms_;
  64 }
  65
  66 BitmapCursorFactoryOzone::BitmapCursorFactoryOzone() {}
  67
  68 BitmapCursorFactoryOzone::~BitmapCursorFactoryOzone() {}
  69
  70 // static
  71 scoped_refptr<BitmapCursorOzone> BitmapCursorFactoryOzone::GetBitmapCursor(
  72     PlatformCursor platform_cursor) {
  73   return make_scoped_refptr(ToBitmapCursorOzone(platform_cursor));
  74 }
  75
  76 PlatformCursor BitmapCursorFactoryOzone::GetDefaultCursor(int type) {
  77   return GetDefaultCursorInternal(type).get();
  78 }
  79
  80 PlatformCursor BitmapCursorFactoryOzone::CreateImageCursor(
  81     const SkBitmap& bitmap,
  82     const gfx::Point& hotspot) {
  83   BitmapCursorOzone* cursor = new BitmapCursorOzone(bitmap, hotspot);
  84   cursor->AddRef();  // Balanced by UnrefImageCursor.
  85   return ToPlatformCursor(cursor);
  86 }
  87
  88 PlatformCursor BitmapCursorFactoryOzone::CreateAnimatedCursor(
  89     const std::vector<SkBitmap>& bitmaps,
  90     const gfx::Point& hotspot,
  91     int frame_delay_ms) {
  92   DCHECK_LT(0U, bitmaps.size());
  93   BitmapCursorOzone* cursor =
  94       new BitmapCursorOzone(bitmaps, hotspot, frame_delay_ms);
  95   cursor->AddRef();  // Balanced by UnrefImageCursor.
  96   return ToPlatformCursor(cursor);
  97 }
  98
  99 void BitmapCursorFactoryOzone::RefImageCursor(PlatformCursor cursor) {
 100   ToBitmapCursorOzone(cursor)->AddRef();
 101 }
 102
 103 void BitmapCursorFactoryOzone::UnrefImageCursor(PlatformCursor cursor) {
 104   ToBitmapCursorOzone(cursor)->Release();
 105 }
 106
 107 scoped_refptr<BitmapCursorOzone>
 108 BitmapCursorFactoryOzone::GetDefaultCursorInternal(int type) {
 109   if (type == kCursorNone)
 110     return NULL;  // NULL is used for hidden cursor.
 111
 112   if (!default_cursors_.count(type)) {
 113     // Create new image cursor from default aura bitmap for this type. We hold a
 114     // ref forever because clients do not do refcounting for default cursors.
 115     scoped_refptr<BitmapCursorOzone> cursor = CreateDefaultBitmapCursor(type);
 116     if (!cursor.get() && type != kCursorPointer)
 117       cursor = GetDefaultCursorInternal(kCursorPointer);
 118     DCHECK(cursor.get()) << "Failed to load default cursor bitmap";
 119     default_cursors_[type] = cursor;
 120   }
 121
 122   // Returned owned default cursor for this type.
 123   return default_cursors_[type];
 124 }
 125
 126 }  // namespace ui