Libraries: Move to Userland/Libraries/

1 files changed, 163 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/Layout.cpp b/Userland/Libraries/LibGUI/Layout.cpp
new file mode 100644
index 0000000000..250b1c5ca4
--- /dev/null
+++ b/Userland/Libraries/LibGUI/Layout.cpp
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2018-2020, 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 <AK/Badge.h>
+#include <AK/JsonObject.h>
+#include <LibGUI/Layout.h>
+#include <LibGUI/Widget.h>
+
+namespace GUI {
+
+Layout::Layout()
+{
+    REGISTER_INT_PROPERTY("spacing", spacing, set_spacing);
+
+    register_property(
+        "margins",
+        [this] {
+            JsonObject margins_object;
+            margins_object.set("left", m_margins.left());
+            margins_object.set("right", m_margins.right());
+            margins_object.set("top", m_margins.top());
+            margins_object.set("bottom", m_margins.bottom());
+            return margins_object;
+        },
+        [this](auto value) {
+            if (!value.is_array() || value.as_array().size() != 4)
+                return false;
+            int m[4];
+            for (size_t i = 0; i < 4; ++i)
+                m[i] = value.as_array().at(i).to_i32();
+            set_margins({ m[0], m[1], m[2], m[3] });
+            return true;
+        });
+
+    register_property("entries",
+        [this] {
+            JsonArray entries_array;
+            for (auto& entry : m_entries) {
+                JsonObject entry_object;
+                if (entry.type == Entry::Type::Widget) {
+                    entry_object.set("type", "Widget");
+                    entry_object.set("widget", (FlatPtr)entry.widget.ptr());
+                } else if (entry.type == Entry::Type::Spacer) {
+                    entry_object.set("type", "Spacer");
+                } else {
+                    ASSERT_NOT_REACHED();
+                }
+                entries_array.append(move(entry_object));
+            }
+            return entries_array;
+        });
+}
+
+Layout::~Layout()
+{
+}
+
+void Layout::notify_adopted(Badge<Widget>, Widget& widget)
+{
+    if (m_owner == &widget)
+        return;
+    m_owner = widget;
+}
+
+void Layout::notify_disowned(Badge<Widget>, Widget& widget)
+{
+    ASSERT(m_owner == &widget);
+    m_owner.clear();
+}
+
+void Layout::add_entry(Entry&& entry)
+{
+    m_entries.append(move(entry));
+    if (m_owner)
+        m_owner->notify_layout_changed({});
+}
+
+void Layout::add_spacer()
+{
+    Entry entry;
+    entry.type = Entry::Type::Spacer;
+    add_entry(move(entry));
+}
+
+void Layout::add_layout(OwnPtr<Layout>&& layout)
+{
+    Entry entry;
+    entry.type = Entry::Type::Layout;
+    entry.layout = move(layout);
+    add_entry(move(entry));
+}
+
+void Layout::add_widget(Widget& widget)
+{
+    Entry entry;
+    entry.type = Entry::Type::Widget;
+    entry.widget = widget;
+    add_entry(move(entry));
+}
+
+void Layout::insert_widget_before(Widget& widget, Widget& before_widget)
+{
+    Entry entry;
+    entry.type = Entry::Type::Widget;
+    entry.widget = widget;
+    m_entries.insert_before_matching(move(entry), [&](auto& existing_entry) {
+        return existing_entry.type == Entry::Type::Widget && existing_entry.widget.ptr() == &before_widget;
+    });
+    if (m_owner)
+        m_owner->notify_layout_changed({});
+}
+
+void Layout::remove_widget(Widget& widget)
+{
+    m_entries.remove_first_matching([&](auto& entry) {
+        return entry.widget == &widget;
+    });
+    if (m_owner)
+        m_owner->notify_layout_changed({});
+}
+
+void Layout::set_spacing(int spacing)
+{
+    if (m_spacing == spacing)
+        return;
+    m_spacing = spacing;
+    if (m_owner)
+        m_owner->notify_layout_changed({});
+}
+
+void Layout::set_margins(const Margins& margins)
+{
+    if (m_margins == margins)
+        return;
+    m_margins = margins;
+    if (m_owner)
+        m_owner->notify_layout_changed({});
+}
+
+}