Browser+Ladybird+LibWebView: Move some common functions to LibWebView

The implementations of handle_web_content_process_crash and
take_screenshot are exactly the same across Browser and Ladybird. Let's
reduce some code duplication and move them to LibWebView.

12 files changed, 90 insertions, 188 deletions

diff --git a/Ladybird/Tab.cpp b/Ladybird/Tab.cpp
index 853addbf6b..1c0ff29980 100644
--- a/Ladybird/Tab.cpp
+++ b/Ladybird/Tab.cpp
@@ -9,12 +9,8 @@
 #include "BrowserWindow.h"
 #include "Settings.h"
 #include "Utilities.h"
-#include <AK/LexicalPath.h>
 #include <Browser/History.h>
-#include <LibCore/DateTime.h>
-#include <LibCore/StandardPaths.h>
 #include <LibGfx/ImageFormats/BMPWriter.h>
-#include <LibGfx/ImageFormats/PNGWriter.h>
 #include <QClipboard>
 #include <QCoreApplication>
 #include <QFont>
@@ -191,7 +187,7 @@ Tab::Tab(BrowserWindow* window, StringView webdriver_content_ipc_path, WebView::
     auto* take_visible_screenshot_action = new QAction("Take &Visible Screenshot", this);
     take_visible_screenshot_action->setIcon(QIcon(QString("%1/res/icons/16x16/filetype-image.png").arg(s_serenity_resource_root.characters())));
     QObject::connect(take_visible_screenshot_action, &QAction::triggered, this, [this]() {
-        if (auto result = take_screenshot(ScreenshotType::Visible); result.is_error()) {
+        if (auto result = view().take_screenshot(WebView::ViewImplementation::ScreenshotType::Visible); result.is_error()) {
             auto error = String::formatted("{}", result.error()).release_value_but_fixme_should_propagate_errors();
             QMessageBox::warning(this, "Ladybird", qstring_from_ak_string(error));
         }
@@ -200,7 +196,7 @@ Tab::Tab(BrowserWindow* window, StringView webdriver_content_ipc_path, WebView::
     auto* take_full_screenshot_action = new QAction("Take &Full Screenshot", this);
     take_full_screenshot_action->setIcon(QIcon(QString("%1/res/icons/16x16/filetype-image.png").arg(s_serenity_resource_root.characters())));
     QObject::connect(take_full_screenshot_action, &QAction::triggered, this, [this]() {
-        if (auto result = take_screenshot(ScreenshotType::Full); result.is_error()) {
+        if (auto result = view().take_screenshot(WebView::ViewImplementation::ScreenshotType::Full); result.is_error()) {
             auto error = String::formatted("{}", result.error()).release_value_but_fixme_should_propagate_errors();
             QMessageBox::warning(this, "Ladybird", qstring_from_ak_string(error));
         }
@@ -450,33 +446,6 @@ void Tab::copy_link_url(URL const& url)
     clipboard->setText(qstring_from_ak_deprecated_string(url.to_deprecated_string()));
 }
 
-ErrorOr<void> Tab::take_screenshot(ScreenshotType type)
-{
-    Gfx::ShareableBitmap bitmap;
-
-    switch (type) {
-    case ScreenshotType::Visible:
-        bitmap = view().take_screenshot();
-        break;
-    case ScreenshotType::Full:
-        bitmap = view().take_document_screenshot();
-        break;
-    }
-
-    if (!bitmap.is_valid())
-        return Error::from_string_view("Failed to take a screenshot of the current tab"sv);
-
-    LexicalPath path { Core::StandardPaths::downloads_directory() };
-    path = path.append(TRY(Core::DateTime::now().to_string("screenshot-%Y-%m-%d-%H-%M-%S.png"sv)));
-
-    auto encoded = TRY(Gfx::PNGWriter::encode(*bitmap.bitmap()));
-
-    auto screenshot_file = TRY(Core::File::open(path.string(), Core::File::OpenMode::Write));
-    TRY(screenshot_file->write_until_depleted(encoded));
-
-    return {};
-}
-
 void Tab::location_edit_return_pressed()
 {
     navigate(m_location_edit->text());
diff --git a/Ladybird/Tab.h b/Ladybird/Tab.h
index 0f313681d0..77598303dc 100644
--- a/Ladybird/Tab.h
+++ b/Ladybird/Tab.h
@@ -60,12 +60,6 @@ private:
     void open_link_in_new_tab(URL const&);
     void copy_link_url(URL const&);
 
-    enum class ScreenshotType {
-        Visible,
-        Full,
-    };
-    ErrorOr<void> take_screenshot(ScreenshotType);
-
     QBoxLayout* m_layout;
     QToolBar* m_toolbar { nullptr };
     QToolButton* m_reset_zoom_button { nullptr };
diff --git a/Ladybird/WebContentView.cpp b/Ladybird/WebContentView.cpp
index a09ac93458..c51b7fde98 100644
--- a/Ladybird/WebContentView.cpp
+++ b/Ladybird/WebContentView.cpp
@@ -637,43 +637,6 @@ void WebContentView::create_client(WebView::EnableCallgrindProfiling enable_call
         client().async_connect_to_webdriver(m_webdriver_content_ipc_path);
 }
 
-Gfx::ShareableBitmap WebContentView::take_screenshot() const
-{
-    if (auto* bitmap = m_client_state.has_usable_bitmap ? m_client_state.front_bitmap.bitmap.ptr() : m_backup_bitmap.ptr())
-        return bitmap->to_shareable_bitmap();
-    return {};
-}
-
-Gfx::ShareableBitmap WebContentView::take_document_screenshot()
-{
-    return client().take_document_screenshot();
-}
-
-void WebContentView::handle_web_content_process_crash()
-{
-    dbgln("WebContent process crashed!");
-    create_client();
-    VERIFY(m_client_state.client);
-
-    // Don't keep a stale backup bitmap around.
-    m_backup_bitmap = nullptr;
-
-    handle_resize();
-    StringBuilder builder;
-    builder.append("<html><head><title>Crashed: "sv);
-    builder.append(escape_html_entities(m_url.to_deprecated_string()));
-    builder.append("</title></head><body>"sv);
-    builder.append("<h1>Web page crashed"sv);
-    if (!m_url.host().is_empty()) {
-        builder.appendff(" on {}", escape_html_entities(m_url.host()));
-    }
-    builder.append("</h1>"sv);
-    auto escaped_url = escape_html_entities(m_url.to_deprecated_string());
-    builder.appendff("The web page <a href=\"{}\">{}</a> has crashed.<br><br>You can reload the page to try again.", escaped_url, escaped_url);
-    builder.append("</body></html>"sv);
-    load_html(builder.to_deprecated_string(), m_url);
-}
-
 void WebContentView::notify_server_did_paint(Badge<WebContentClient>, i32 bitmap_id, Gfx::IntSize size)
 {
     if (m_client_state.back_bitmap.id == bitmap_id) {
diff --git a/Ladybird/WebContentView.h b/Ladybird/WebContentView.h
index 9ac0bc9837..095c87ede1 100644
--- a/Ladybird/WebContentView.h
+++ b/Ladybird/WebContentView.h
@@ -113,9 +113,6 @@ public:
     Gfx::IntPoint to_content(Gfx::IntPoint) const;
     Gfx::IntPoint to_widget(Gfx::IntPoint) const;
 
-    Gfx::ShareableBitmap take_screenshot() const;
-    Gfx::ShareableBitmap take_document_screenshot();
-
     enum class PaletteMode {
         Default,
         Dark,
@@ -223,7 +220,5 @@ private:
 
     Gfx::IntRect m_viewport_rect;
 
-    void handle_web_content_process_crash();
-
     StringView m_webdriver_content_ipc_path;
 };
diff --git a/Userland/Applications/Browser/BrowserWindow.cpp b/Userland/Applications/Browser/BrowserWindow.cpp
index 8aaaa84f40..c6bd6e5499 100644
--- a/Userland/Applications/Browser/BrowserWindow.cpp
+++ b/Userland/Applications/Browser/BrowserWindow.cpp
@@ -14,10 +14,8 @@
 #include "CookieJar.h"
 #include "InspectorWidget.h"
 #include "Tab.h"
-#include <AK/LexicalPath.h>
 #include <Applications/Browser/BrowserWindowGML.h>
 #include <LibConfig/Client.h>
-#include <LibCore/DateTime.h>
 #include <LibCore/StandardPaths.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/Clipboard.h>
@@ -32,7 +30,6 @@
 #include <LibGUI/TabWidget.h>
 #include <LibGUI/ToolbarContainer.h>
 #include <LibGUI/Widget.h>
-#include <LibGfx/ImageFormats/PNGWriter.h>
 #include <LibJS/Interpreter.h>
 #include <LibWeb/CSS/PreferredColorScheme.h>
 #include <LibWeb/Dump.h>
@@ -259,22 +256,6 @@ void BrowserWindow::build_menus()
         this);
     m_inspect_dom_node_action->set_status_tip("Open inspector for this element");
 
-    m_take_visible_screenshot_action = GUI::Action::create(
-        "Take &Visible Screenshot"sv, g_icon_bag.filetype_image, [this](auto&) {
-            if (auto result = take_screenshot(ScreenshotType::Visible); result.is_error())
-                GUI::MessageBox::show_error(this, DeprecatedString::formatted("{}", result.error()));
-        },
-        this);
-    m_take_visible_screenshot_action->set_status_tip("Save a screenshot of the visible portion of the current tab to the Downloads directory"sv);
-
-    m_take_full_screenshot_action = GUI::Action::create(
-        "Take &Full Screenshot"sv, g_icon_bag.filetype_image, [this](auto&) {
-            if (auto result = take_screenshot(ScreenshotType::Full); result.is_error())
-                GUI::MessageBox::show_error(this, DeprecatedString::formatted("{}", result.error()));
-        },
-        this);
-    m_take_full_screenshot_action->set_status_tip("Save a screenshot of the entirety of the current tab to the Downloads directory"sv);
-
     auto& inspect_menu = add_menu("&Inspect"_string.release_value_but_fixme_should_propagate_errors());
     inspect_menu.add_action(*m_view_source_action);
     inspect_menu.add_action(*m_inspect_dom_tree_action);
@@ -655,10 +636,6 @@ Tab& BrowserWindow::create_new_tab(URL url, Web::HTML::ActivateTab activate)
         return active_tab().view().get_session_storage_entries();
     };
 
-    new_tab.on_take_screenshot = [this]() {
-        return active_tab().view().take_screenshot();
-    };
-
     new_tab.load(url);
 
     dbgln_if(SPAM_DEBUG, "Added new tab {:p}, loading {}", &new_tab, url);
@@ -776,36 +753,6 @@ void BrowserWindow::event(Core::Event& event)
     Window::event(event);
 }
 
-ErrorOr<void> BrowserWindow::take_screenshot(ScreenshotType type)
-{
-    if (!active_tab().on_take_screenshot)
-        return {};
-
-    Gfx::ShareableBitmap bitmap;
-
-    switch (type) {
-    case ScreenshotType::Visible:
-        bitmap = active_tab().on_take_screenshot();
-        break;
-    case ScreenshotType::Full:
-        bitmap = active_tab().view().take_document_screenshot();
-        break;
-    }
-
-    if (!bitmap.is_valid())
-        return Error::from_string_view("Failed to take a screenshot of the current tab"sv);
-
-    LexicalPath path { Core::StandardPaths::downloads_directory() };
-    path = path.append(Core::DateTime::now().to_deprecated_string("screenshot-%Y-%m-%d-%H-%M-%S.png"sv));
-
-    auto encoded = TRY(Gfx::PNGWriter::encode(*bitmap.bitmap()));
-
-    auto screenshot_file = TRY(Core::File::open(path.string(), Core::File::OpenMode::Write));
-    TRY(screenshot_file->write_until_depleted(encoded));
-
-    return {};
-}
-
 void BrowserWindow::update_displayed_zoom_level()
 {
     VERIFY(m_zoom_menu);
diff --git a/Userland/Applications/Browser/BrowserWindow.h b/Userland/Applications/Browser/BrowserWindow.h
index 0d19d196a6..ba94bdeb23 100644
--- a/Userland/Applications/Browser/BrowserWindow.h
+++ b/Userland/Applications/Browser/BrowserWindow.h
@@ -41,8 +41,6 @@ public:
     GUI::Action& view_source_action() { return *m_view_source_action; }
     GUI::Action& inspect_dom_tree_action() { return *m_inspect_dom_tree_action; }
     GUI::Action& inspect_dom_node_action() { return *m_inspect_dom_node_action; }
-    GUI::Action& take_visible_screenshot_action() { return *m_take_visible_screenshot_action; }
-    GUI::Action& take_full_screenshot_action() { return *m_take_full_screenshot_action; }
 
     void content_filters_changed();
     void autoplay_allowlist_changed();
@@ -65,12 +63,6 @@ private:
 
     void update_displayed_zoom_level();
 
-    enum class ScreenshotType {
-        Visible,
-        Full,
-    };
-    ErrorOr<void> take_screenshot(ScreenshotType);
-
     RefPtr<GUI::Action> m_go_back_action;
     RefPtr<GUI::Action> m_go_forward_action;
     RefPtr<GUI::Action> m_go_home_action;
@@ -80,8 +72,6 @@ private:
     RefPtr<GUI::Action> m_view_source_action;
     RefPtr<GUI::Action> m_inspect_dom_tree_action;
     RefPtr<GUI::Action> m_inspect_dom_node_action;
-    RefPtr<GUI::Action> m_take_visible_screenshot_action;
-    RefPtr<GUI::Action> m_take_full_screenshot_action;
 
     RefPtr<GUI::Menu> m_zoom_menu;
 
diff --git a/Userland/Applications/Browser/Tab.cpp b/Userland/Applications/Browser/Tab.cpp
index f83e24ecb6..af7e7a5c7c 100644
--- a/Userland/Applications/Browser/Tab.cpp
+++ b/Userland/Applications/Browser/Tab.cpp
@@ -554,6 +554,26 @@ Tab::Tab(BrowserWindow& window)
         on_tab_close_other_request(*this);
     }));
 
+    auto take_visible_screenshot_action = GUI::Action::create(
+        "Take &Visible Screenshot"sv, g_icon_bag.filetype_image, [this](auto&) {
+            if (auto result = view().take_screenshot(WebView::ViewImplementation::ScreenshotType::Visible); result.is_error()) {
+                auto error = String::formatted("{}", result.error()).release_value_but_fixme_should_propagate_errors();
+                GUI::MessageBox::show_error(&this->window(), error);
+            }
+        },
+        this);
+    take_visible_screenshot_action->set_status_tip("Save a screenshot of the visible portion of the current tab to the Downloads directory"sv);
+
+    auto take_full_screenshot_action = GUI::Action::create(
+        "Take &Full Screenshot"sv, g_icon_bag.filetype_image, [this](auto&) {
+            if (auto result = view().take_screenshot(WebView::ViewImplementation::ScreenshotType::Full); result.is_error()) {
+                auto error = String::formatted("{}", result.error()).release_value_but_fixme_should_propagate_errors();
+                GUI::MessageBox::show_error(&this->window(), error);
+            }
+        },
+        this);
+    take_full_screenshot_action->set_status_tip("Save a screenshot of the entirety of the current tab to the Downloads directory"sv);
+
     m_page_context_menu = GUI::Menu::construct();
     m_page_context_menu->add_action(window.go_back_action());
     m_page_context_menu->add_action(window.go_forward_action());
@@ -562,8 +582,8 @@ Tab::Tab(BrowserWindow& window)
     m_page_context_menu->add_action(window.copy_selection_action());
     m_page_context_menu->add_action(window.select_all_action());
     m_page_context_menu->add_separator();
-    m_page_context_menu->add_action(window.take_visible_screenshot_action());
-    m_page_context_menu->add_action(window.take_full_screenshot_action());
+    m_page_context_menu->add_action(move(take_visible_screenshot_action));
+    m_page_context_menu->add_action(move(take_full_screenshot_action));
     m_page_context_menu->add_separator();
     m_page_context_menu->add_action(window.view_source_action());
     m_page_context_menu->add_action(window.inspect_dom_tree_action());
diff --git a/Userland/Applications/Browser/Tab.h b/Userland/Applications/Browser/Tab.h
index ecc4f300d0..6fe3589bdb 100644
--- a/Userland/Applications/Browser/Tab.h
+++ b/Userland/Applications/Browser/Tab.h
@@ -77,7 +77,6 @@ public:
     Function<Vector<Web::Cookie::Cookie>()> on_get_cookies_entries;
     Function<OrderedHashMap<DeprecatedString, DeprecatedString>()> on_get_local_storage_entries;
     Function<OrderedHashMap<DeprecatedString, DeprecatedString>()> on_get_session_storage_entries;
-    Function<Gfx::ShareableBitmap()> on_take_screenshot;
 
     void enable_webdriver_mode();
 
diff --git a/Userland/Libraries/LibWebView/OutOfProcessWebView.cpp b/Userland/Libraries/LibWebView/OutOfProcessWebView.cpp
index 8c47ff9f31..a65256f91b 100644
--- a/Userland/Libraries/LibWebView/OutOfProcessWebView.cpp
+++ b/Userland/Libraries/LibWebView/OutOfProcessWebView.cpp
@@ -35,30 +35,6 @@ OutOfProcessWebView::OutOfProcessWebView()
 
 OutOfProcessWebView::~OutOfProcessWebView() = default;
 
-void OutOfProcessWebView::handle_web_content_process_crash()
-{
-    create_client();
-    VERIFY(m_client_state.client);
-
-    // Don't keep a stale backup bitmap around.
-    m_backup_bitmap = nullptr;
-
-    handle_resize();
-    StringBuilder builder;
-    builder.append("<html><head><title>Crashed: "sv);
-    builder.append(escape_html_entities(m_url.to_deprecated_string()));
-    builder.append("</title></head><body>"sv);
-    builder.append("<h1>Web page crashed"sv);
-    if (!m_url.host().is_empty()) {
-        builder.appendff(" on {}", escape_html_entities(m_url.host()));
-    }
-    builder.append("</h1>"sv);
-    auto escaped_url = escape_html_entities(m_url.to_deprecated_string());
-    builder.appendff("The web page <a href=\"{}\">{}</a> has crashed.<br><br>You can reload the page to try again.", escaped_url, escaped_url);
-    builder.append("</body></html>"sv);
-    load_html(builder.to_deprecated_string(), m_url);
-}
-
 void OutOfProcessWebView::create_client(EnableCallgrindProfiling)
 {
     m_client_state = {};
@@ -591,18 +567,6 @@ void OutOfProcessWebView::set_window_size(Gfx::IntSize size)
     client().async_set_window_size(size);
 }
 
-Gfx::ShareableBitmap OutOfProcessWebView::take_screenshot() const
-{
-    if (auto* bitmap = m_client_state.has_usable_bitmap ? m_client_state.front_bitmap.bitmap.ptr() : m_backup_bitmap.ptr())
-        return bitmap->to_shareable_bitmap();
-    return {};
-}
-
-Gfx::ShareableBitmap OutOfProcessWebView::take_document_screenshot()
-{
-    return client().take_document_screenshot();
-}
-
 void OutOfProcessWebView::focusin_event(GUI::FocusEvent&)
 {
     client().async_set_has_focus(true);
diff --git a/Userland/Libraries/LibWebView/OutOfProcessWebView.h b/Userland/Libraries/LibWebView/OutOfProcessWebView.h
index 8d8f3f9c31..1be13f44a7 100644
--- a/Userland/Libraries/LibWebView/OutOfProcessWebView.h
+++ b/Userland/Libraries/LibWebView/OutOfProcessWebView.h
@@ -53,9 +53,6 @@ public:
 
     void set_system_visibility_state(bool visible);
 
-    Gfx::ShareableBitmap take_screenshot() const;
-    Gfx::ShareableBitmap take_document_screenshot();
-
     // This is a hint that tells OOPWV that the content will scale to the viewport size.
     // In practice, this means that OOPWV may render scaled stale versions of the content while resizing.
     void set_content_scales_to_viewport(bool);
@@ -183,8 +180,6 @@ private:
 
     virtual Gfx::IntRect viewport_rect() const override;
 
-    void handle_web_content_process_crash();
-
     using InputEvent = Variant<GUI::KeyEvent, GUI::MouseEvent>;
     void enqueue_input_event(InputEvent const&);
     void process_next_input_event();
diff --git a/Userland/Libraries/LibWebView/ViewImplementation.cpp b/Userland/Libraries/LibWebView/ViewImplementation.cpp
index 85cd532f86..1b112257fb 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.cpp
+++ b/Userland/Libraries/LibWebView/ViewImplementation.cpp
@@ -5,7 +5,11 @@
  */
 
 #include <AK/Error.h>
+#include <AK/LexicalPath.h>
 #include <AK/String.h>
+#include <LibCore/DateTime.h>
+#include <LibCore/StandardPaths.h>
+#include <LibGfx/ImageFormats/PNGWriter.h>
 #include <LibWebView/ViewImplementation.h>
 
 namespace WebView {
@@ -286,4 +290,58 @@ void ViewImplementation::request_repaint()
     client().async_paint(viewport_rect(), m_client_state.back_bitmap.id);
 }
 
+void ViewImplementation::handle_web_content_process_crash()
+{
+    dbgln("WebContent process crashed!");
+
+    create_client();
+    VERIFY(m_client_state.client);
+
+    // Don't keep a stale backup bitmap around.
+    m_backup_bitmap = nullptr;
+
+    handle_resize();
+    StringBuilder builder;
+    builder.append("<html><head><title>Crashed: "sv);
+    builder.append(escape_html_entities(m_url.to_deprecated_string()));
+    builder.append("</title></head><body>"sv);
+    builder.append("<h1>Web page crashed"sv);
+    if (!m_url.host().is_empty()) {
+        builder.appendff(" on {}", escape_html_entities(m_url.host()));
+    }
+    builder.append("</h1>"sv);
+    auto escaped_url = escape_html_entities(m_url.to_deprecated_string());
+    builder.appendff("The web page <a href=\"{}\">{}</a> has crashed.<br><br>You can reload the page to try again.", escaped_url, escaped_url);
+    builder.append("</body></html>"sv);
+    load_html(builder.to_deprecated_string(), m_url);
+}
+
+ErrorOr<void> ViewImplementation::take_screenshot(ScreenshotType type)
+{
+    Gfx::ShareableBitmap bitmap;
+
+    switch (type) {
+    case ScreenshotType::Visible:
+        if (auto* visible_bitmap = m_client_state.has_usable_bitmap ? m_client_state.front_bitmap.bitmap.ptr() : m_backup_bitmap.ptr())
+            bitmap = visible_bitmap->to_shareable_bitmap();
+        break;
+    case ScreenshotType::Full:
+        bitmap = client().take_document_screenshot();
+        break;
+    }
+
+    if (!bitmap.is_valid())
+        return Error::from_string_view("Failed to take a screenshot of the current tab"sv);
+
+    LexicalPath path { Core::StandardPaths::downloads_directory() };
+    path = path.append(TRY(Core::DateTime::now().to_string("screenshot-%Y-%m-%d-%H-%M-%S.png"sv)));
+
+    auto encoded = TRY(Gfx::PNGWriter::encode(*bitmap.bitmap()));
+
+    auto screenshot_file = TRY(Core::File::open(path.string(), Core::File::OpenMode::Write));
+    TRY(screenshot_file->write_until_depleted(encoded));
+
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibWebView/ViewImplementation.h b/Userland/Libraries/LibWebView/ViewImplementation.h
index 23e8a5d2d4..75ca656d5b 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.h
+++ b/Userland/Libraries/LibWebView/ViewImplementation.h
@@ -74,6 +74,12 @@ public:
     void toggle_video_loop_state();
     void toggle_video_controls_state();
 
+    enum class ScreenshotType {
+        Visible,
+        Full,
+    };
+    ErrorOr<void> take_screenshot(ScreenshotType);
+
     virtual void notify_server_did_layout(Badge<WebContentClient>, Gfx::IntSize content_size) = 0;
     virtual void notify_server_did_paint(Badge<WebContentClient>, i32 bitmap_id, Gfx::IntSize) = 0;
     virtual void notify_server_did_invalidate_content_rect(Badge<WebContentClient>, Gfx::IntRect const&) = 0;
@@ -157,6 +163,8 @@ protected:
     ErrorOr<NonnullRefPtr<WebView::WebContentClient>> launch_web_content_process(ReadonlySpan<String> candidate_web_content_paths, EnableCallgrindProfiling = EnableCallgrindProfiling::No, IsLayoutTestMode = IsLayoutTestMode::No);
 #endif
 
+    void handle_web_content_process_crash();
+
     struct SharedBitmap {
         i32 id { -1 };
         i32 pending_paints { 0 };