content/common/cursors/webcursor_aurax11.cc

   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 "content/common/cursors/webcursor.h"
   6
   7 #include <X11/cursorfont.h>
   8 #include <X11/Xcursor/Xcursor.h>
   9 #include <X11/Xlib.h>
  10
  11 #include "base/logging.h"
  12 #include "third_party/WebKit/public/platform/WebCursorInfo.h"
  13 #include "ui/base/cursor/cursor.h"
  14 #include "ui/base/cursor/cursor_loader_x11.h"
  15 #include "ui/base/cursor/cursor_util.h"
  16 #include "ui/base/x/x11_util.h"
  17
  18 namespace content {
  19
  20 ui::PlatformCursor WebCursor::GetPlatformCursor() {
  21   if (platform_cursor_)
  22     return platform_cursor_;
  23
  24   if (custom_data_.size() == 0)
  25     return 0;
  26
  27   SkBitmap bitmap;
  28   bitmap.allocN32Pixels(custom_size_.width(), custom_size_.height());
  29   memcpy(bitmap.getAddr32(0, 0), custom_data_.data(), custom_data_.size());
  30   gfx::Point hotspot = hotspot_;
  31   ui::ScaleAndRotateCursorBitmapAndHotpoint(
  32       device_scale_factor_, gfx::Display::ROTATE_0, &bitmap, &hotspot);
  33
  34   XcursorImage* image = ui::SkBitmapToXcursorImage(&bitmap, hotspot);
  35   platform_cursor_ = ui::CreateReffedCustomXCursor(image);
  36   return platform_cursor_;
  37 }
  38
  39 void WebCursor::SetDisplayInfo(const gfx::Display& display) {
  40   if (device_scale_factor_ == display.device_scale_factor())
  41     return;
  42
  43   device_scale_factor_ = display.device_scale_factor();
  44   if (platform_cursor_)
  45     ui::UnrefCustomXCursor(platform_cursor_);
  46   platform_cursor_ = 0;
  47   // It is not necessary to recreate platform_cursor_ yet, since it will be
  48   // recreated on demand when GetPlatformCursor is called.
  49 }
  50
  51 void WebCursor::InitPlatformData() {
  52   platform_cursor_ = 0;
  53   device_scale_factor_ = 1.f;
  54 }
  55
  56 bool WebCursor::SerializePlatformData(base::Pickle* pickle) const {
  57   return true;
  58 }
  59
  60 bool WebCursor::DeserializePlatformData(base::PickleIterator* iter) {
  61   return true;
  62 }
  63
  64 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
  65   return true;
  66 }
  67
  68 void WebCursor::CleanupPlatformData() {
  69   if (platform_cursor_) {
  70     ui::UnrefCustomXCursor(platform_cursor_);
  71     platform_cursor_ = 0;
  72   }
  73 }
  74
  75 void WebCursor::CopyPlatformData(const WebCursor& other) {
  76   if (platform_cursor_)
  77     ui::UnrefCustomXCursor(platform_cursor_);
  78   platform_cursor_ = other.platform_cursor_;
  79   if (platform_cursor_)
  80     ui::RefCustomXCursor(platform_cursor_);
  81
  82   device_scale_factor_ = other.device_scale_factor_;
  83 }
  84
  85 }  // namespace content