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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/win/win_cursor_factory.h"
#include <windows.h>
#include <optional>
#include <string>
#include <utility>
#include "base/check_op.h"
#include "base/memory/scoped_refptr.h"
#include "base/notreached.h"
#include "base/win/scoped_gdi_object.h"
#include "base/win/windows_types.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/base/cursor/platform_cursor.h"
#include "ui/base/resource/resource_bundle_win.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/icon_util.h"
#include "ui/resources/grit/ui_unscaled_resources.h"
namespace ui {
namespace {
const wchar_t* GetCursorId(mojom::CursorType type) {
switch (type) {
case mojom::CursorType::kNull:
case mojom::CursorType::kPointer:
return IDC_ARROW;
case mojom::CursorType::kCross:
return IDC_CROSS;
case mojom::CursorType::kHand:
return IDC_HAND;
case mojom::CursorType::kIBeam:
return IDC_IBEAM;
case mojom::CursorType::kWait:
return IDC_WAIT;
case mojom::CursorType::kHelp:
return IDC_HELP;
case mojom::CursorType::kEastResize:
case mojom::CursorType::kWestResize:
case mojom::CursorType::kEastWestResize:
return IDC_SIZEWE;
case mojom::CursorType::kNorthResize:
case mojom::CursorType::kSouthResize:
case mojom::CursorType::kNorthSouthResize:
return IDC_SIZENS;
case mojom::CursorType::kNorthEastResize:
case mojom::CursorType::kSouthWestResize:
case mojom::CursorType::kNorthEastSouthWestResize:
return IDC_SIZENESW;
case mojom::CursorType::kNorthWestResize:
case mojom::CursorType::kSouthEastResize:
case mojom::CursorType::kNorthWestSouthEastResize:
return IDC_SIZENWSE;
case mojom::CursorType::kMove:
return IDC_SIZEALL;
case mojom::CursorType::kProgress:
return IDC_APPSTARTING;
case mojom::CursorType::kNoDrop:
case mojom::CursorType::kNotAllowed:
case mojom::CursorType::kEastWestNoResize:
case mojom::CursorType::kNorthEastSouthWestNoResize:
case mojom::CursorType::kNorthSouthNoResize:
case mojom::CursorType::kNorthWestSouthEastNoResize:
return IDC_NO;
case mojom::CursorType::kColumnResize:
return MAKEINTRESOURCE(IDC_COLRESIZE);
case mojom::CursorType::kRowResize:
return MAKEINTRESOURCE(IDC_ROWRESIZE);
case mojom::CursorType::kMiddlePanning:
return MAKEINTRESOURCE(IDC_PAN_MIDDLE);
case mojom::CursorType::kMiddlePanningVertical:
return MAKEINTRESOURCE(IDC_PAN_MIDDLE_VERTICAL);
case mojom::CursorType::kMiddlePanningHorizontal:
return MAKEINTRESOURCE(IDC_PAN_MIDDLE_HORIZONTAL);
case mojom::CursorType::kEastPanning:
return MAKEINTRESOURCE(IDC_PAN_EAST);
case mojom::CursorType::kNorthPanning:
return MAKEINTRESOURCE(IDC_PAN_NORTH);
case mojom::CursorType::kNorthEastPanning:
return MAKEINTRESOURCE(IDC_PAN_NORTH_EAST);
case mojom::CursorType::kNorthWestPanning:
return MAKEINTRESOURCE(IDC_PAN_NORTH_WEST);
case mojom::CursorType::kSouthPanning:
return MAKEINTRESOURCE(IDC_PAN_SOUTH);
case mojom::CursorType::kSouthEastPanning:
return MAKEINTRESOURCE(IDC_PAN_SOUTH_EAST);
case mojom::CursorType::kSouthWestPanning:
return MAKEINTRESOURCE(IDC_PAN_SOUTH_WEST);
case mojom::CursorType::kWestPanning:
return MAKEINTRESOURCE(IDC_PAN_WEST);
case mojom::CursorType::kVerticalText:
return MAKEINTRESOURCE(IDC_VERTICALTEXT);
case mojom::CursorType::kCell:
return MAKEINTRESOURCE(IDC_CELL);
case mojom::CursorType::kZoomIn:
return MAKEINTRESOURCE(IDC_ZOOMIN);
case mojom::CursorType::kZoomOut:
return MAKEINTRESOURCE(IDC_ZOOMOUT);
case mojom::CursorType::kGrab:
return MAKEINTRESOURCE(IDC_HAND_GRAB);
case mojom::CursorType::kGrabbing:
return MAKEINTRESOURCE(IDC_HAND_GRABBING);
case mojom::CursorType::kCopy:
return MAKEINTRESOURCE(IDC_COPYCUR);
case mojom::CursorType::kAlias:
return MAKEINTRESOURCE(IDC_ALIAS);
case mojom::CursorType::kDndCopy:
case mojom::CursorType::kDndLink:
case mojom::CursorType::kDndMove:
case mojom::CursorType::kDndNone:
case mojom::CursorType::kContextMenu:
NOTIMPLEMENTED();
return IDC_ARROW;
case mojom::CursorType::kNone:
case mojom::CursorType::kCustom:
NOTREACHED();
}
NOTREACHED();
}
} // namespace
WinCursorFactory::WinCursorFactory() = default;
WinCursorFactory::~WinCursorFactory() = default;
scoped_refptr<PlatformCursor> WinCursorFactory::GetDefaultCursor(
mojom::CursorType type) {
if (!default_cursors_.count(type)) {
// Using a dark 1x1 bit bmp for the kNone cursor may still cause DWM to do
// composition work unnecessarily. Better to totally remove it from the
// screen. crbug.com/1069698
HCURSOR hcursor = nullptr;
if (type != mojom::CursorType::kNone) {
const wchar_t* id = GetCursorId(type);
hcursor = LoadCursor(nullptr, id);
// Try loading the cursor from the Chromium resources.
if (!hcursor)
hcursor = LoadCursorFromResourcesDataDLL(id);
if (!hcursor)
return nullptr;
}
default_cursors_[type] = base::MakeRefCounted<WinCursor>(hcursor);
}
return default_cursors_[type];
}
std::optional<CursorData> WinCursorFactory::GetCursorData(
mojom::CursorType type) {
DCHECK_NE(type, mojom::CursorType::kNone);
DCHECK_NE(type, mojom::CursorType::kCustom);
auto cursor = GetDefaultCursor(type);
if (!cursor) {
return std::nullopt;
}
HCURSOR hcursor = WinCursor::FromPlatformCursor(cursor)->hcursor();
SkBitmap bitmap = IconUtil::CreateSkBitmapFromHICON(hcursor);
if (bitmap.isNull()) {
return std::nullopt;
}
return ui::CursorData({std::move(bitmap)},
IconUtil::GetHotSpotFromHICON(hcursor));
}
scoped_refptr<PlatformCursor> WinCursorFactory::CreateImageCursor(
mojom::CursorType type,
const SkBitmap& bitmap,
const gfx::Point& hotspot,
float scale) {
return base::MakeRefCounted<WinCursor>(
IconUtil::CreateCursorFromSkBitmap(bitmap, hotspot).release(),
/*should_destroy=*/true);
}
} // namespace ui
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