ui/base/cursor/cursors_aura.cc

   1 // Copyright (c) 2013 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/cursors_aura.h"
   6
   7 #include "third_party/skia/include/core/SkBitmap.h"
   8 #include "ui/base/resource/resource_bundle.h"
   9 #include "ui/gfx/geometry/point.h"
  10 #include "ui/gfx/image/image_skia.h"
  11 #include "ui/resources/grit/ui_resources.h"
  12
  13 namespace ui {
  14 namespace {
  15
  16 struct HotPoint {
  17   int x;
  18   int y;
  19 };
  20
  21 struct CursorData {
  22   int id;
  23   int resource_id;
  24   HotPoint hot_1x;
  25   HotPoint hot_2x;
  26 };
  27
  28 struct CursorSet {
  29   const CursorSetType id;
  30   const CursorData* cursors;
  31   const int length;
  32   const CursorData* animated_cursors;
  33   const int animated_length;
  34 };
  35
  36 const CursorData kNormalCursors[] = {
  37   {ui::kCursorNull, IDR_AURA_CURSOR_PTR, {4, 4}, {7, 7}},
  38   {ui::kCursorPointer, IDR_AURA_CURSOR_PTR, {4, 4}, {7, 7}},
  39   {ui::kCursorNoDrop, IDR_AURA_CURSOR_NO_DROP, {9, 9}, {18, 18}},
  40   {ui::kCursorNotAllowed, IDR_AURA_CURSOR_NO_DROP, {9, 9}, {18, 18}},
  41   {ui::kCursorCopy, IDR_AURA_CURSOR_COPY, {9, 9}, {18, 18}},
  42   {ui::kCursorHand, IDR_AURA_CURSOR_HAND, {9, 4}, {19, 8}},
  43   {ui::kCursorMove, IDR_AURA_CURSOR_MOVE, {11, 11}, {23, 23}},
  44   {ui::kCursorNorthEastResize, IDR_AURA_CURSOR_NORTH_EAST_RESIZE,
  45    {12, 11}, {25, 23}},
  46   {ui::kCursorSouthWestResize, IDR_AURA_CURSOR_SOUTH_WEST_RESIZE,
  47    {12, 11}, {25, 23}},
  48   {ui::kCursorSouthEastResize, IDR_AURA_CURSOR_SOUTH_EAST_RESIZE,
  49    {11, 11}, {24, 23}},
  50   {ui::kCursorNorthWestResize, IDR_AURA_CURSOR_NORTH_WEST_RESIZE,
  51    {11, 11}, {24, 23}},
  52   {ui::kCursorNorthResize, IDR_AURA_CURSOR_NORTH_RESIZE, {11, 12}, {23, 23}},
  53   {ui::kCursorSouthResize, IDR_AURA_CURSOR_SOUTH_RESIZE, {11, 12}, {23, 23}},
  54   {ui::kCursorEastResize, IDR_AURA_CURSOR_EAST_RESIZE, {12, 11}, {25, 23}},
  55   {ui::kCursorWestResize, IDR_AURA_CURSOR_WEST_RESIZE, {12, 11}, {25, 23}},
  56   {ui::kCursorIBeam, IDR_AURA_CURSOR_IBEAM, {12, 12}, {24, 25}},
  57   {ui::kCursorAlias, IDR_AURA_CURSOR_ALIAS, {8, 6}, {15, 11}},
  58   {ui::kCursorCell, IDR_AURA_CURSOR_CELL, {11, 11}, {24, 23}},
  59   {ui::kCursorContextMenu, IDR_AURA_CURSOR_CONTEXT_MENU, {4, 4}, {8, 9}},
  60   {ui::kCursorCross, IDR_AURA_CURSOR_CROSSHAIR, {12, 12}, {25, 23}},
  61   {ui::kCursorHelp, IDR_AURA_CURSOR_HELP, {4, 4}, {8, 9}},
  62   {ui::kCursorVerticalText, IDR_AURA_CURSOR_XTERM_HORIZ, {12, 11}, {26, 23}},
  63   {ui::kCursorZoomIn, IDR_AURA_CURSOR_ZOOM_IN, {10, 10}, {20, 20}},
  64   {ui::kCursorZoomOut, IDR_AURA_CURSOR_ZOOM_OUT, {10, 10}, {20, 20}},
  65   {ui::kCursorRowResize, IDR_AURA_CURSOR_ROW_RESIZE, {11, 12}, {23, 23}},
  66   {ui::kCursorColumnResize, IDR_AURA_CURSOR_COL_RESIZE, {12, 11}, {25, 23}},
  67   {ui::kCursorEastWestResize, IDR_AURA_CURSOR_EAST_WEST_RESIZE,
  68    {12, 11}, {25, 23}},
  69   {ui::kCursorNorthSouthResize, IDR_AURA_CURSOR_NORTH_SOUTH_RESIZE,
  70    {11, 12}, {23, 23}},
  71   {ui::kCursorNorthEastSouthWestResize,
  72    IDR_AURA_CURSOR_NORTH_EAST_SOUTH_WEST_RESIZE, {12, 11}, {25, 23}},
  73   {ui::kCursorNorthWestSouthEastResize,
  74    IDR_AURA_CURSOR_NORTH_WEST_SOUTH_EAST_RESIZE, {11, 11}, {24, 23}},
  75   {ui::kCursorGrab, IDR_AURA_CURSOR_GRAB, {8, 5}, {16, 10}},
  76   {ui::kCursorGrabbing, IDR_AURA_CURSOR_GRABBING, {9, 9}, {18, 18}},
  77 };
  78
  79 const CursorData kLargeCursors[] = {
  80   // The 2x hotspots should be double of the 1x, even though the cursors are
  81   // shown as same size as 1x (64x64), because in 2x dpi screen, the 1x large
  82   // cursor assets (64x64) are internally enlarged to the double size (128x128)
  83   // by ResourceBundleImageSource.
  84   {ui::kCursorNull, IDR_AURA_CURSOR_BIG_PTR, {10, 10}, {20, 20}},
  85   {ui::kCursorPointer, IDR_AURA_CURSOR_BIG_PTR, {10, 10}, {20, 20}},
  86   {ui::kCursorNoDrop, IDR_AURA_CURSOR_BIG_NO_DROP, {10, 10}, {20, 20}},
  87   {ui::kCursorNotAllowed, IDR_AURA_CURSOR_BIG_NO_DROP, {10, 10}, {20, 20}},
  88   {ui::kCursorCopy, IDR_AURA_CURSOR_BIG_COPY, {10, 10}, {20, 20}},
  89   {ui::kCursorHand, IDR_AURA_CURSOR_BIG_HAND, {25, 7}, {50, 14}},
  90   {ui::kCursorMove, IDR_AURA_CURSOR_BIG_MOVE, {32, 31}, {64, 62}},
  91   {ui::kCursorNorthEastResize, IDR_AURA_CURSOR_BIG_NORTH_EAST_RESIZE,
  92    {31, 28}, {62, 56}},
  93   {ui::kCursorSouthWestResize, IDR_AURA_CURSOR_BIG_SOUTH_WEST_RESIZE,
  94    {31, 28}, {62, 56}},
  95   {ui::kCursorSouthEastResize, IDR_AURA_CURSOR_BIG_SOUTH_EAST_RESIZE,
  96    {28, 28}, {56, 56}},
  97   {ui::kCursorNorthWestResize, IDR_AURA_CURSOR_BIG_NORTH_WEST_RESIZE,
  98    {28, 28}, {56, 56}},
  99   {ui::kCursorNorthResize, IDR_AURA_CURSOR_BIG_NORTH_RESIZE,
 100    {29, 32}, {58, 64}},
 101   {ui::kCursorSouthResize, IDR_AURA_CURSOR_BIG_SOUTH_RESIZE,
 102    {29, 32}, {58, 64}},
 103   {ui::kCursorEastResize, IDR_AURA_CURSOR_BIG_EAST_RESIZE, {35, 29}, {70, 58}},
 104   {ui::kCursorWestResize, IDR_AURA_CURSOR_BIG_WEST_RESIZE, {35, 29}, {70, 58}},
 105   {ui::kCursorIBeam, IDR_AURA_CURSOR_BIG_IBEAM, {30, 32}, {60, 64}},
 106   {ui::kCursorAlias, IDR_AURA_CURSOR_BIG_ALIAS, {19, 11}, {38, 22}},
 107   {ui::kCursorCell, IDR_AURA_CURSOR_BIG_CELL, {30, 30}, {60, 60}},
 108   {ui::kCursorContextMenu, IDR_AURA_CURSOR_BIG_CONTEXT_MENU,
 109    {11, 11}, {22, 22}},
 110   {ui::kCursorCross, IDR_AURA_CURSOR_BIG_CROSSHAIR, {31, 30}, {62, 60}},
 111   {ui::kCursorHelp, IDR_AURA_CURSOR_BIG_HELP, {10, 11}, {20, 22}},
 112   {ui::kCursorVerticalText, IDR_AURA_CURSOR_BIG_XTERM_HORIZ,
 113    {32, 30}, {64, 60}},
 114   {ui::kCursorZoomIn, IDR_AURA_CURSOR_BIG_ZOOM_IN, {25, 26}, {50, 52}},
 115   {ui::kCursorZoomOut, IDR_AURA_CURSOR_BIG_ZOOM_OUT, {26, 26}, {52, 52}},
 116   {ui::kCursorRowResize, IDR_AURA_CURSOR_BIG_ROW_RESIZE, {29, 32}, {58, 64}},
 117   {ui::kCursorColumnResize, IDR_AURA_CURSOR_BIG_COL_RESIZE, {35, 29}, {70, 58}},
 118   {ui::kCursorEastWestResize, IDR_AURA_CURSOR_BIG_EAST_WEST_RESIZE,
 119    {35, 29}, {70, 58}},
 120   {ui::kCursorNorthSouthResize, IDR_AURA_CURSOR_BIG_NORTH_SOUTH_RESIZE,
 121    {29, 32}, {58, 64}},
 122   {ui::kCursorNorthEastSouthWestResize,
 123    IDR_AURA_CURSOR_BIG_NORTH_EAST_SOUTH_WEST_RESIZE, {32, 30}, {64, 60}},
 124   {ui::kCursorNorthWestSouthEastResize,
 125    IDR_AURA_CURSOR_BIG_NORTH_WEST_SOUTH_EAST_RESIZE, {32, 31}, {64, 62}},
 126   {ui::kCursorGrab, IDR_AURA_CURSOR_BIG_GRAB, {21, 11}, {42, 22}},
 127   {ui::kCursorGrabbing, IDR_AURA_CURSOR_BIG_GRABBING, {20, 12}, {40, 24}},
 128 };
 129
 130 const CursorData kAnimatedCursors[] = {
 131   {ui::kCursorWait, IDR_THROBBER, {7, 7}, {14, 14}},
 132   {ui::kCursorProgress, IDR_THROBBER, {7, 7}, {14, 14}},
 133 };
 134
 135 const CursorSet kCursorSets[] = {
 136   {
 137     CURSOR_SET_NORMAL,
 138     kNormalCursors, arraysize(kNormalCursors),
 139     kAnimatedCursors, arraysize(kAnimatedCursors)
 140   },
 141   {
 142     CURSOR_SET_LARGE,
 143     kLargeCursors, arraysize(kLargeCursors),
 144     // TODO(yoshiki): Replace animated cursors with big assets. crbug.com/247254
 145     kAnimatedCursors, arraysize(kAnimatedCursors)
 146   },
 147 };
 148
 149 const CursorSet* GetCursorSetByType(CursorSetType cursor_set_id) {
 150   for (size_t i = 0; i < arraysize(kCursorSets); ++i) {
 151     if (kCursorSets[i].id == cursor_set_id)
 152       return &kCursorSets[i];
 153   }
 154
 155   return NULL;
 156 }
 157
 158 bool SearchTable(const CursorData* table,
 159                  size_t table_length,
 160                  int id,
 161                  float scale_factor,
 162                  int* resource_id,
 163                  gfx::Point* point) {
 164   bool resource_2x_available =
 165       ResourceBundle::GetSharedInstance().GetMaxScaleFactor() ==
 166       SCALE_FACTOR_200P;
 167   for (size_t i = 0; i < table_length; ++i) {
 168     if (table[i].id == id) {
 169       *resource_id = table[i].resource_id;
 170       *point = scale_factor == 1.0f || !resource_2x_available ?
 171                gfx::Point(table[i].hot_1x.x, table[i].hot_1x.y) :
 172                gfx::Point(table[i].hot_2x.x, table[i].hot_2x.y);
 173       return true;
 174     }
 175   }
 176
 177   return false;
 178 }
 179
 180 }  // namespace
 181
 182 bool GetCursorDataFor(CursorSetType cursor_set_id,
 183                       int id,
 184                       float scale_factor,
 185                       int* resource_id,
 186                       gfx::Point* point) {
 187   const CursorSet* cursor_set = GetCursorSetByType(cursor_set_id);
 188   if (cursor_set &&
 189       SearchTable(cursor_set->cursors,
 190                   cursor_set->length,
 191                   id, scale_factor, resource_id, point)) {
 192       return true;
 193   }
 194
 195   // Falls back to the default cursor set.
 196   cursor_set = GetCursorSetByType(ui::CURSOR_SET_NORMAL);
 197   DCHECK(cursor_set);
 198   return SearchTable(cursor_set->cursors,
 199                      cursor_set->length,
 200                      id, scale_factor, resource_id, point);
 201 }
 202
 203 bool GetAnimatedCursorDataFor(CursorSetType cursor_set_id,
 204                               int id,
 205                               float scale_factor,
 206                               int* resource_id,
 207                               gfx::Point* point) {
 208   const CursorSet* cursor_set = GetCursorSetByType(cursor_set_id);
 209   if (cursor_set &&
 210       SearchTable(cursor_set->animated_cursors,
 211                   cursor_set->animated_length,
 212                   id, scale_factor, resource_id, point)) {
 213     return true;
 214   }
 215
 216   // Falls back to the default cursor set.
 217   cursor_set = GetCursorSetByType(ui::CURSOR_SET_NORMAL);
 218   DCHECK(cursor_set);
 219   return SearchTable(cursor_set->animated_cursors,
 220                      cursor_set->animated_length,
 221                      id, scale_factor, resource_id, point);
 222 }
 223
 224 bool GetCursorBitmap(const Cursor& cursor,
 225                      SkBitmap* bitmap,
 226                      gfx::Point* point) {
 227   DCHECK(bitmap && point);
 228   int resource_id;
 229   if (!GetCursorDataFor(ui::CURSOR_SET_NORMAL,
 230                         cursor.native_type(),
 231                         cursor.device_scale_factor(),
 232                         &resource_id,
 233                         point)) {
 234     return false;
 235   }
 236
 237   const SkBitmap* cursor_bitmap = ResourceBundle::GetSharedInstance().
 238       GetImageSkiaNamed(resource_id)->bitmap();
 239   if (!cursor_bitmap)
 240     return false;
 241   *bitmap = *cursor_bitmap;
 242   return true;
 243 }
 244
 245 }  // namespace ui