mirror of
https://bitbucket.org/chromiumembedded/cef
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140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
// Copyright 2020 The Chromium Embedded Framework Authors. Portions copyright
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// 2012 The Chromium Authors. All rights reserved. Use of this source code is
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// governed by a BSD-style license that can be found in the LICENSE file.
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#include "libcef/browser/native/cursor_util.h"
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#include "libcef/browser/browser_host_base.h"
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#include "content/common/cursors/webcursor.h"
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#include "content/public/browser/render_widget_host_view.h"
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#include "ui/base/cursor/cursor_factory.h"
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#include "ui/base/cursor/mojom/cursor_type.mojom.h"
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#if defined(USE_AURA)
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#include "ui/display/display_util.h"
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#include "ui/wm/core/cursor_loader.h"
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#endif
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namespace cursor_util {
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namespace {
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#if defined(USE_AURA)
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display::ScreenInfo GetScreenInfo(CefRefPtr<CefBrowser> browser) {
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display::ScreenInfo screen_info;
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bool screen_info_set = false;
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if (auto web_contents =
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static_cast<CefBrowserHostBase*>(browser.get())->GetWebContents()) {
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if (auto view = web_contents->GetRenderWidgetHostView()) {
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const auto screen_infos = view->GetScreenInfos();
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if (!screen_infos.screen_infos.empty()) {
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screen_info = screen_infos.current();
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screen_info_set = true;
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}
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}
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}
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if (!screen_info_set) {
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display::DisplayUtil::GetDefaultScreenInfo(&screen_info);
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}
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return screen_info;
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}
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display::Display::Rotation OrientationAngleToRotation(
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uint16_t orientation_angle) {
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// The Display rotation and the ScreenInfo orientation are not the same
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// angle. The former is the physical display rotation while the later is the
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// rotation required by the content to be shown properly on the screen, in
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// other words, relative to the physical display.
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if (orientation_angle == 0) {
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return display::Display::ROTATE_0;
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}
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if (orientation_angle == 90) {
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return display::Display::ROTATE_270;
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}
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if (orientation_angle == 180) {
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return display::Display::ROTATE_180;
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}
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if (orientation_angle == 270) {
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return display::Display::ROTATE_90;
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}
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NOTREACHED();
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return display::Display::ROTATE_0;
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}
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#endif // defined(USE_AURA)
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} // namespace
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bool OnCursorChange(CefRefPtr<CefBrowser> browser,
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const ui::Cursor& ui_cursor) {
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auto client = browser->GetHost()->GetClient();
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if (!client) {
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return false;
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}
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auto handler = client->GetDisplayHandler();
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if (!handler) {
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return false;
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}
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const cef_cursor_type_t cursor_type =
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static_cast<cef_cursor_type_t>(ui_cursor.type());
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CefCursorInfo custom_cursor_info;
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if (ui_cursor.type() == ui::mojom::CursorType::kCustom) {
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custom_cursor_info.hotspot.x = ui_cursor.custom_hotspot().x();
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custom_cursor_info.hotspot.y = ui_cursor.custom_hotspot().y();
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custom_cursor_info.image_scale_factor = ui_cursor.image_scale_factor();
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custom_cursor_info.buffer = ui_cursor.custom_bitmap().getPixels();
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custom_cursor_info.size.width = ui_cursor.custom_bitmap().width();
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custom_cursor_info.size.height = ui_cursor.custom_bitmap().height();
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}
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bool handled = false;
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#if defined(USE_AURA)
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wm::CursorLoader cursor_loader;
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scoped_refptr<ui::PlatformCursor> platform_cursor;
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CefCursorHandle native_cursor = kNullCursorHandle;
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ui::Cursor loaded_cursor = ui_cursor;
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if (ui_cursor.type() == ui::mojom::CursorType::kCustom) {
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platform_cursor = ui::CursorFactory::GetInstance()->CreateImageCursor(
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ui::mojom::CursorType::kCustom, ui_cursor.custom_bitmap(),
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ui_cursor.custom_hotspot());
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} else {
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const auto& screen_info = GetScreenInfo(browser);
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cursor_loader.SetDisplayData(
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OrientationAngleToRotation(screen_info.orientation_angle),
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screen_info.device_scale_factor);
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// Attempts to load the cursor via the platform or from pak resources.
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cursor_loader.SetPlatformCursor(&loaded_cursor);
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platform_cursor = loaded_cursor.platform();
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}
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if (platform_cursor) {
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native_cursor = cursor_util::ToCursorHandle(platform_cursor);
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}
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handled = handler->OnCursorChange(browser, native_cursor, cursor_type,
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custom_cursor_info);
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#elif BUILDFLAG(IS_MAC)
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// |web_cursor| owns the resulting |native_cursor|.
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content::WebCursor web_cursor(ui_cursor);
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CefCursorHandle native_cursor = web_cursor.GetNativeCursor();
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handled = handler->OnCursorChange(browser, native_cursor, cursor_type,
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custom_cursor_info);
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#else
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NOTIMPLEMENTED();
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#endif
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return handled;
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}
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} // namespace cursor_util
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