LibWeb: Move WebContentView from Demos/WebView into LibWeb

5 files changed, 434 insertions, 0 deletions

diff --git a/Libraries/LibWeb/CMakeLists.txt b/Libraries/LibWeb/CMakeLists.txt
index 815119997d..30e79d5c3e 100644
--- a/Libraries/LibWeb/CMakeLists.txt
+++ b/Libraries/LibWeb/CMakeLists.txt
@@ -109,11 +109,15 @@ set(SOURCES
     CSS/PropertyID.h
     CSS/PropertyID.cpp
     CSS/DefaultStyleSheetSource.cpp
+    WebContentView.cpp
+    WebContentClient.cpp
 )
 
 set(GENERATED_SOURCES
     ../../Services/ProtocolServer/ProtocolClientEndpoint.h
     ../../Services/ProtocolServer/ProtocolServerEndpoint.h
+    ../../Services/WebContent/WebContentClientEndpoint.h
+    ../../Services/WebContent/WebContentServerEndpoint.h
 )
 
 set_property(GLOBAL PROPERTY wrapper_sources)
diff --git a/Libraries/LibWeb/WebContentClient.cpp b/Libraries/LibWeb/WebContentClient.cpp
new file mode 100644
index 0000000000..0042cc14db
--- /dev/null
+++ b/Libraries/LibWeb/WebContentClient.cpp
@@ -0,0 +1,126 @@
+/*
+ * 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.
+ */
+
+#include "WebContentClient.h"
+#include "WebContentView.h"
+#include <AK/SharedBuffer.h>
+
+WebContentClient::WebContentClient(WebContentView& view)
+    : IPC::ServerConnection<WebContentClientEndpoint, WebContentServerEndpoint>(*this, "/tmp/portal/webcontent")
+    , m_view(view)
+{
+    handshake();
+}
+
+void WebContentClient::handshake()
+{
+    auto response = send_sync<Messages::WebContentServer::Greet>(getpid());
+    set_my_client_id(response->client_id());
+    set_server_pid(response->server_pid());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidPaint& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidPaint! content_rect=" << message.content_rect() << ", shbuf_id=" << message.shbuf_id();
+#endif
+    m_view.notify_server_did_paint({}, message.shbuf_id());
+}
+
+void WebContentClient::handle([[maybe_unused]] const Messages::WebContentClient::DidFinishLoad& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidFinishLoad! url=" << message.url();
+#endif
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidInvalidateContentRect& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidInvalidateContentRect! content_rect=" << message.content_rect();
+#endif
+
+    // FIXME: Figure out a way to coalesce these messages to reduce unnecessary painting
+    m_view.notify_server_did_invalidate_content_rect({}, message.content_rect());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidChangeSelection&)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidChangeSelection!";
+#endif
+    m_view.notify_server_did_change_selection({});
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidLayout& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidLayout! content_size=" << message.content_size();
+#endif
+    m_view.notify_server_did_layout({}, message.content_size());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidChangeTitle& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidChangeTitle! title=" << message.title();
+#endif
+    m_view.notify_server_did_change_title({}, message.title());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidRequestScrollIntoView& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidRequestScrollIntoView! rect=" << message.rect();
+#endif
+    m_view.notify_server_did_request_scroll_into_view({}, message.rect());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidHoverLink& message)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidHoverLink! url=" << message.url();
+#endif
+    m_view.notify_server_did_hover_link({}, message.url());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidUnhoverLink&)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "handle: WebContentClient::DidUnhoverLink!";
+#endif
+    m_view.notify_server_did_unhover_link({});
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidClickLink& message)
+{
+    m_view.notify_server_did_click_link({}, message.url(), message.target(), message.modifiers());
+}
+
+void WebContentClient::handle(const Messages::WebContentClient::DidMiddleClickLink& message)
+{
+    m_view.notify_server_did_middle_click_link({}, message.url(), message.target(), message.modifiers());
+}
diff --git a/Libraries/LibWeb/WebContentClient.h b/Libraries/LibWeb/WebContentClient.h
new file mode 100644
index 0000000000..638cf22b40
--- /dev/null
+++ b/Libraries/LibWeb/WebContentClient.h
@@ -0,0 +1,60 @@
+/*
+ * 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/HashMap.h>
+#include <LibIPC/ServerConnection.h>
+#include <WebContent/WebContentClientEndpoint.h>
+#include <WebContent/WebContentServerEndpoint.h>
+
+class WebContentView;
+
+class WebContentClient
+    : public IPC::ServerConnection<WebContentClientEndpoint, WebContentServerEndpoint>
+    , public WebContentClientEndpoint {
+    C_OBJECT(WebContentClient);
+
+public:
+    virtual void handshake() override;
+
+private:
+    WebContentClient(WebContentView&);
+
+    virtual void handle(const Messages::WebContentClient::DidPaint&) override;
+    virtual void handle(const Messages::WebContentClient::DidFinishLoad&) override;
+    virtual void handle(const Messages::WebContentClient::DidInvalidateContentRect&) override;
+    virtual void handle(const Messages::WebContentClient::DidChangeSelection&) override;
+    virtual void handle(const Messages::WebContentClient::DidLayout&) override;
+    virtual void handle(const Messages::WebContentClient::DidChangeTitle&) override;
+    virtual void handle(const Messages::WebContentClient::DidRequestScrollIntoView&) override;
+    virtual void handle(const Messages::WebContentClient::DidHoverLink&) override;
+    virtual void handle(const Messages::WebContentClient::DidUnhoverLink&) override;
+    virtual void handle(const Messages::WebContentClient::DidClickLink&) override;
+    virtual void handle(const Messages::WebContentClient::DidMiddleClickLink&) override;
+
+    WebContentView& m_view;
+};
diff --git a/Libraries/LibWeb/WebContentView.cpp b/Libraries/LibWeb/WebContentView.cpp
new file mode 100644
index 0000000000..67ceffecd8
--- /dev/null
+++ b/Libraries/LibWeb/WebContentView.cpp
@@ -0,0 +1,166 @@
+/*
+ * 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.
+ */
+
+#include "WebContentView.h"
+#include "WebContentClient.h"
+#include <AK/SharedBuffer.h>
+#include <LibGUI/Painter.h>
+#include <LibGUI/ScrollBar.h>
+#include <LibGfx/SystemTheme.h>
+
+WebContentView::WebContentView()
+{
+    m_client = WebContentClient::construct(*this);
+    client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer_id()));
+}
+
+WebContentView::~WebContentView()
+{
+}
+
+void WebContentView::load(const URL& url)
+{
+    client().post_message(Messages::WebContentServer::LoadURL(url));
+}
+
+void WebContentView::paint_event(GUI::PaintEvent& event)
+{
+    GUI::ScrollableWidget::paint_event(event);
+
+    GUI::Painter painter(*this);
+    painter.add_clip_rect(frame_inner_rect());
+    painter.add_clip_rect(event.rect());
+    painter.translate(frame_thickness(), frame_thickness());
+
+    ASSERT(m_front_bitmap);
+    painter.blit({ 0, 0 }, *m_front_bitmap, m_front_bitmap->rect());
+}
+
+void WebContentView::resize_event(GUI::ResizeEvent& event)
+{
+    GUI::ScrollableWidget::resize_event(event);
+
+    m_front_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, available_size())->to_bitmap_backed_by_shared_buffer();
+    m_front_bitmap->shared_buffer()->share_with(client().server_pid());
+
+    m_back_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, available_size())->to_bitmap_backed_by_shared_buffer();
+    m_back_bitmap->shared_buffer()->share_with(client().server_pid());
+
+    client().post_message(Messages::WebContentServer::SetViewportRect(Gfx::IntRect({ horizontal_scrollbar().value(), vertical_scrollbar().value() }, available_size())));
+    request_repaint();
+}
+
+void WebContentView::mousedown_event(GUI::MouseEvent& event)
+{
+    client().post_message(Messages::WebContentServer::MouseDown(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers()));
+}
+
+void WebContentView::mouseup_event(GUI::MouseEvent& event)
+{
+    client().post_message(Messages::WebContentServer::MouseUp(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers()));
+}
+
+void WebContentView::mousemove_event(GUI::MouseEvent& event)
+{
+    client().post_message(Messages::WebContentServer::MouseMove(to_content_position(event.position()), event.button(), event.buttons(), event.modifiers()));
+}
+
+void WebContentView::notify_server_did_paint(Badge<WebContentClient>, i32 shbuf_id)
+{
+    if (m_back_bitmap->shbuf_id() == shbuf_id) {
+        swap(m_back_bitmap, m_front_bitmap);
+        update();
+    }
+}
+
+void WebContentView::notify_server_did_invalidate_content_rect(Badge<WebContentClient>, [[maybe_unused]] const Gfx::IntRect& content_rect)
+{
+#ifdef DEBUG_SPAM
+    dbg() << "server did invalidate content_rect: " << content_rect << ", current shbuf_id=" << m_bitmap->shbuf_id();
+#endif
+    request_repaint();
+}
+
+void WebContentView::notify_server_did_change_selection(Badge<WebContentClient>)
+{
+    request_repaint();
+}
+
+void WebContentView::notify_server_did_layout(Badge<WebContentClient>, const Gfx::IntSize& content_size)
+{
+    set_content_size(content_size);
+}
+
+void WebContentView::notify_server_did_change_title(Badge<WebContentClient>, const String& title)
+{
+    if (on_title_change)
+        on_title_change(title);
+}
+
+void WebContentView::notify_server_did_request_scroll_into_view(Badge<WebContentClient>, const Gfx::IntRect& rect)
+{
+    scroll_into_view(rect, true, true);
+}
+
+void WebContentView::notify_server_did_hover_link(Badge<WebContentClient>, const URL& url)
+{
+    if (on_link_hover)
+        on_link_hover(url);
+}
+
+void WebContentView::notify_server_did_unhover_link(Badge<WebContentClient>)
+{
+    if (on_link_hover)
+        on_link_hover({});
+}
+
+void WebContentView::notify_server_did_click_link(Badge<WebContentClient>, const URL& url, const String& target, unsigned int modifiers)
+{
+    if (on_link_click)
+        on_link_click(url, target, modifiers);
+}
+
+void WebContentView::notify_server_did_middle_click_link(Badge<WebContentClient>, const URL& url, const String& target, unsigned int modifiers)
+{
+    if (on_link_middle_click)
+        on_link_middle_click(url, target, modifiers);
+}
+
+void WebContentView::did_scroll()
+{
+    client().post_message(Messages::WebContentServer::SetViewportRect(visible_content_rect()));
+    request_repaint();
+}
+
+void WebContentView::request_repaint()
+{
+    client().post_message(Messages::WebContentServer::Paint(m_back_bitmap->rect().translated(horizontal_scrollbar().value(), vertical_scrollbar().value()), m_back_bitmap->shbuf_id()));
+}
+
+WebContentClient& WebContentView::client()
+{
+    return *m_client;
+}
diff --git a/Libraries/LibWeb/WebContentView.h b/Libraries/LibWeb/WebContentView.h
new file mode 100644
index 0000000000..6af604a31c
--- /dev/null
+++ b/Libraries/LibWeb/WebContentView.h
@@ -0,0 +1,78 @@
+/*
+ * 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 <LibGUI/ScrollableWidget.h>
+#include <LibGUI/Widget.h>
+
+class WebContentClient;
+
+class WebContentView final : public GUI::ScrollableWidget {
+    C_OBJECT(WebContentView);
+
+public:
+    virtual ~WebContentView() override;
+
+    void load(const URL&);
+
+    Function<void(const String&)> on_title_change;
+    Function<void(const URL&)> on_link_hover;
+    Function<void(const URL&, const String& target, unsigned modifiers)> on_link_click;
+    Function<void(const URL&, const String& target, unsigned modifiers)> on_link_middle_click;
+
+    void notify_server_did_layout(Badge<WebContentClient>, const Gfx::IntSize& content_size);
+    void notify_server_did_paint(Badge<WebContentClient>, i32 shbuf_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_change_title(Badge<WebContentClient>, const String&);
+    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);
+
+private:
+    WebContentView();
+
+    // ^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;
+
+    // ^ScrollableWidget
+    virtual void did_scroll() override;
+
+    void request_repaint();
+
+    WebContentClient& client();
+
+    RefPtr<WebContentClient> m_client;
+    RefPtr<Gfx::Bitmap> m_front_bitmap;
+    RefPtr<Gfx::Bitmap> m_back_bitmap;
+};