ladybird/Userland/Libraries/LibWeb/OutOfProcessWebView.h
Angus Gibson 0e881bc5d7 LibWeb: Handle scrolling an OutOfProcessWebView
When a mousewheel scroll event isn't handled by the web content
itself (e.g. an overflowed box or similar), the event needs to get
passed back up to the OutOfProcessWebView.
2021-03-02 13:20:03 +01:00

119 lines
5.1 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/URL.h>
#include <LibGUI/ScrollableWidget.h>
#include <LibGUI/Widget.h>
#include <LibWeb/WebViewHooks.h>
namespace Web {
class WebContentClient;
class OutOfProcessWebView final
: public GUI::ScrollableWidget
, public Web::WebViewHooks {
C_OBJECT(OutOfProcessWebView);
public:
virtual ~OutOfProcessWebView() override;
URL url() const { return m_url; }
void load(const URL&);
void load_html(const StringView&, const URL&);
void load_empty_document();
void debug_request(const String& request, const String& argument = {});
void get_source();
void js_console_initialize();
void js_console_input(const String& js_source);
void notify_server_did_layout(Badge<WebContentClient>, const Gfx::IntSize& content_size);
void notify_server_did_paint(Badge<WebContentClient>, i32 bitmap_id);
void notify_server_did_invalidate_content_rect(Badge<WebContentClient>, const Gfx::IntRect&);
void notify_server_did_change_selection(Badge<WebContentClient>);
void notify_server_did_request_cursor_change(Badge<WebContentClient>, Gfx::StandardCursor cursor);
void notify_server_did_change_title(Badge<WebContentClient>, const String&);
void notify_server_did_request_scroll(Badge<WebContentClient>, int);
void notify_server_did_request_scroll_into_view(Badge<WebContentClient>, const Gfx::IntRect&);
void notify_server_did_hover_link(Badge<WebContentClient>, const URL&);
void notify_server_did_unhover_link(Badge<WebContentClient>);
void notify_server_did_click_link(Badge<WebContentClient>, const URL&, const String& target, unsigned modifiers);
void notify_server_did_middle_click_link(Badge<WebContentClient>, const URL&, const String& target, unsigned modifiers);
void notify_server_did_start_loading(Badge<WebContentClient>, const URL&);
void notify_server_did_finish_loading(Badge<WebContentClient>, const URL&);
void notify_server_did_request_context_menu(Badge<WebContentClient>, const Gfx::IntPoint&);
void notify_server_did_request_link_context_menu(Badge<WebContentClient>, const Gfx::IntPoint&, const URL&, const String& target, unsigned modifiers);
void notify_server_did_request_alert(Badge<WebContentClient>, const String& message);
bool notify_server_did_request_confirm(Badge<WebContentClient>, const String& message);
String notify_server_did_request_prompt(Badge<WebContentClient>, const String& message, const String& default_);
void notify_server_did_get_source(const URL& url, const String& source);
void notify_server_did_js_console_output(const String& method, const String& line);
private:
OutOfProcessWebView();
// ^Widget
virtual void paint_event(GUI::PaintEvent&) override;
virtual void resize_event(GUI::ResizeEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mousewheel_event(GUI::MouseEvent&) override;
virtual void keydown_event(GUI::KeyEvent&) override;
virtual void theme_change_event(GUI::ThemeChangeEvent&) override;
// ^ScrollableWidget
virtual void did_scroll() override;
void request_repaint();
void handle_resize();
void create_client();
WebContentClient& client();
void handle_web_content_process_crash();
URL m_url;
struct ClientState {
RefPtr<WebContentClient> client;
RefPtr<Gfx::Bitmap> front_bitmap;
RefPtr<Gfx::Bitmap> back_bitmap;
i32 front_bitmap_id { -1 };
i32 back_bitmap_id { -1 };
i32 next_bitmap_id { 0 };
bool has_usable_bitmap { false };
} m_client_state;
RefPtr<Gfx::Bitmap> m_backup_bitmap;
};
}