1 files changed, 149 insertions, 0 deletions
diff --git a/Libraries/LibGfx/FloatPoint.h b/Libraries/LibGfx/FloatPoint.h
new file mode 100644
index 0000000000..03a685dd19
--- /dev/null
+++ b/Libraries/LibGfx/FloatPoint.h
@@ -0,0 +1,149 @@
+/*
+ * 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 <AK/LogStream.h>
+#include <AK/String.h>
+#include <LibGfx/Orientation.h>
+
+namespace Gfx {
+
+class FloatRect;
+
+class FloatPoint {
+public:
+    FloatPoint() {}
+    FloatPoint(float x, float y)
+        : m_x(x)
+        , m_y(y)
+    {
+    }
+    float x() const { return m_x; }
+    float y() const { return m_y; }
+
+    void set_x(float x) { m_x = x; }
+    void set_y(float y) { m_y = y; }
+
+    void move_by(float dx, float dy)
+    {
+        m_x += dx;
+        m_y += dy;
+    }
+
+    void move_by(const FloatPoint& delta)
+    {
+        move_by(delta.x(), delta.y());
+    }
+
+    FloatPoint translated(const FloatPoint& delta) const
+    {
+        FloatPoint point = *this;
+        point.move_by(delta);
+        return point;
+    }
+
+    FloatPoint translated(float dx, float dy) const
+    {
+        FloatPoint point = *this;
+        point.move_by(dx, dy);
+        return point;
+    }
+
+    void constrain(const FloatRect&);
+
+    bool operator==(const FloatPoint& other) const
+    {
+        return m_x == other.m_x
+            && m_y == other.m_y;
+    }
+
+    bool operator!=(const FloatPoint& other) const
+    {
+        return !(*this == other);
+    }
+
+    FloatPoint operator-() const { return { -m_x, -m_y }; }
+
+    FloatPoint operator-(const FloatPoint& other) const { return { m_x - other.m_x, m_y - other.m_y }; }
+    FloatPoint& operator-=(const FloatPoint& other)
+    {
+        m_x -= other.m_x;
+        m_y -= other.m_y;
+        return *this;
+    }
+
+    FloatPoint& operator+=(const FloatPoint& other)
+    {
+        m_x += other.m_x;
+        m_y += other.m_y;
+        return *this;
+    }
+    FloatPoint operator+(const FloatPoint& other) const { return { m_x + other.m_x, m_y + other.m_y }; }
+
+    String to_string() const { return String::format("[%g,%g]", x(), y()); }
+
+    bool is_null() const { return !m_x && !m_y; }
+
+    float primary_offset_for_orientation(Orientation orientation) const
+    {
+        return orientation == Orientation::Vertical ? y() : x();
+    }
+
+    void set_primary_offset_for_orientation(Orientation orientation, float value)
+    {
+        if (orientation == Orientation::Vertical)
+            set_y(value);
+        else
+            set_x(value);
+    }
+
+    float secondary_offset_for_orientation(Orientation orientation) const
+    {
+        return orientation == Orientation::Vertical ? x() : y();
+    }
+
+    void set_secondary_offset_for_orientation(Orientation orientation, float value)
+    {
+        if (orientation == Orientation::Vertical)
+            set_x(value);
+        else
+            set_y(value);
+    }
+
+private:
+    float m_x { 0 };
+    float m_y { 0 };
+};
+
+inline const LogStream& operator<<(const LogStream& stream, const FloatPoint& value)
+{
+    return stream << value.to_string();
+}
+
+}
+
+using Gfx::FloatPoint;