Libraries: Move to Userland/Libraries/

1 files changed, 91 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGUI/Splitter.h b/Userland/Libraries/LibGUI/Splitter.h
new file mode 100644
index 0000000000..d8a97023bb
--- /dev/null
+++ b/Userland/Libraries/LibGUI/Splitter.h
@@ -0,0 +1,91 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <LibGUI/Widget.h>
+
+namespace GUI {
+
+class Splitter : public Widget {
+    C_OBJECT(Splitter);
+
+public:
+    virtual ~Splitter() override;
+
+protected:
+    explicit Splitter(Gfx::Orientation);
+
+    virtual void paint_event(PaintEvent&) override;
+    virtual void resize_event(ResizeEvent&) override;
+    virtual void mousedown_event(MouseEvent&) override;
+    virtual void mousemove_event(MouseEvent&) override;
+    virtual void mouseup_event(MouseEvent&) override;
+    virtual void leave_event(Core::Event&) override;
+
+    virtual void did_layout() override;
+
+private:
+    void recompute_grabbable_rect(const Widget&, const Widget&);
+    bool get_resize_candidates_at(const Gfx::IntPoint&, Widget*&, Widget*&);
+    void override_cursor(bool do_override);
+
+    Gfx::Orientation m_orientation;
+    bool m_resizing { false };
+    bool m_overriding_cursor { false };
+    Gfx::IntPoint m_resize_origin;
+    WeakPtr<Widget> m_first_resizee;
+    WeakPtr<Widget> m_second_resizee;
+    Gfx::IntSize m_first_resizee_start_size;
+    Gfx::IntSize m_second_resizee_start_size;
+    Gfx::IntRect m_grabbable_rect;
+};
+
+class VerticalSplitter final : public Splitter {
+    C_OBJECT(VerticalSplitter)
+public:
+    virtual ~VerticalSplitter() override { }
+
+private:
+    VerticalSplitter()
+        : Splitter(Gfx::Orientation::Vertical)
+    {
+    }
+};
+
+class HorizontalSplitter final : public Splitter {
+    C_OBJECT(HorizontalSplitter)
+public:
+    virtual ~HorizontalSplitter() override { }
+
+private:
+    HorizontalSplitter()
+        : Splitter(Gfx::Orientation::Horizontal)
+    {
+    }
+};
+
+}