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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/wm/image_cursors.h"
#include <float.h>
#include "base/logging.h"
#include "base/strings/string16.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/cursor_loader.h"
#include "ui/base/cursor/cursors_aura.h"
#include "ui/gfx/display.h"
#include "ui/gfx/point.h"
namespace ash {
const int kImageCursorIds[] = {
ui::kCursorNull,
ui::kCursorPointer,
ui::kCursorNoDrop,
ui::kCursorNotAllowed,
ui::kCursorCopy,
ui::kCursorHand,
ui::kCursorMove,
ui::kCursorNorthEastResize,
ui::kCursorSouthWestResize,
ui::kCursorSouthEastResize,
ui::kCursorNorthWestResize,
ui::kCursorNorthResize,
ui::kCursorSouthResize,
ui::kCursorEastResize,
ui::kCursorWestResize,
ui::kCursorIBeam,
ui::kCursorAlias,
ui::kCursorCell,
ui::kCursorContextMenu,
ui::kCursorCross,
ui::kCursorHelp,
ui::kCursorVerticalText,
ui::kCursorZoomIn,
ui::kCursorZoomOut,
ui::kCursorRowResize,
ui::kCursorColumnResize,
ui::kCursorEastWestResize,
ui::kCursorNorthSouthResize,
ui::kCursorNorthEastSouthWestResize,
ui::kCursorNorthWestSouthEastResize,
ui::kCursorGrab,
ui::kCursorGrabbing,
};
const int kAnimatedCursorIds[] = {
ui::kCursorWait,
ui::kCursorProgress
};
ImageCursors::ImageCursors() : scale_(1.f), cursor_set_(ui::CURSOR_SET_NORMAL) {
}
ImageCursors::~ImageCursors() {
}
gfx::Display ImageCursors::GetDisplay() const {
if (!cursor_loader_) {
NOTREACHED();
// Returning default on release build as it's not serious enough to crash
// even if this ever happens.
return gfx::Display();
}
return cursor_loader_->display();
}
bool ImageCursors::SetDisplay(const gfx::Display& display) {
float device_scale_factor = display.device_scale_factor();
if (!cursor_loader_) {
cursor_loader_.reset(ui::CursorLoader::Create());
cursor_loader_->set_scale(scale_);
} else if (cursor_loader_->display().rotation() == display.rotation() &&
cursor_loader_->display().device_scale_factor() ==
device_scale_factor) {
return false;
}
cursor_loader_->set_display(display);
ReloadCursors();
return true;
}
void ImageCursors::ReloadCursors() {
const gfx::Display& display = cursor_loader_->display();
float device_scale_factor = display.device_scale_factor();
cursor_loader_->UnloadAll();
for (size_t i = 0; i < arraysize(kImageCursorIds); ++i) {
int resource_id = -1;
gfx::Point hot_point;
bool success = ui::GetCursorDataFor(cursor_set_,
kImageCursorIds[i],
device_scale_factor,
&resource_id,
&hot_point);
DCHECK(success);
cursor_loader_->LoadImageCursor(kImageCursorIds[i], resource_id, hot_point);
}
for (size_t i = 0; i < arraysize(kAnimatedCursorIds); ++i) {
int resource_id = -1;
gfx::Point hot_point;
bool success = ui::GetAnimatedCursorDataFor(cursor_set_,
kAnimatedCursorIds[i],
device_scale_factor,
&resource_id,
&hot_point);
DCHECK(success);
cursor_loader_->LoadAnimatedCursor(kAnimatedCursorIds[i],
resource_id,
hot_point,
ui::kAnimatedCursorFrameDelayMs);
}
}
void ImageCursors::SetScale(float scale) {
if (scale < FLT_EPSILON) {
NOTREACHED() << "Scale must be bigger than 0.";
scale = 1.0f;
}
scale_ = scale;
if (cursor_loader_.get()) {
cursor_loader_->set_scale(scale);
ReloadCursors();
}
}
void ImageCursors::SetCursorSet(ui::CursorSetType cursor_set) {
if (cursor_set_ == cursor_set)
return;
cursor_set_ = cursor_set;
if (cursor_loader_.get())
ReloadCursors();
}
void ImageCursors::SetPlatformCursor(gfx::NativeCursor* cursor) {
cursor_loader_->SetPlatformCursor(cursor);
}
} // namespace ash
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