1 files changed, 119 insertions, 0 deletions
diff --git a/Userland/Libraries/LibGUI/SpinBox.cpp b/Userland/Libraries/LibGUI/SpinBox.cpp
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+++ b/Userland/Libraries/LibGUI/SpinBox.cpp
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+/*
+ * 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 <LibGUI/ControlBoxButton.h>
+#include <LibGUI/SpinBox.h>
+#include <LibGUI/TextBox.h>
+
+REGISTER_WIDGET(GUI, SpinBox)
+
+namespace GUI {
+
+SpinBox::SpinBox()
+{
+    set_min_width(32);
+    set_fixed_height(22);
+    m_editor = add<TextBox>();
+    m_editor->set_text("0");
+    m_editor->on_change = [this] {
+        auto value = m_editor->text().to_uint();
+        if (value.has_value())
+            set_value(value.value());
+        else
+            m_editor->set_text(String::number(m_value));
+    };
+    m_editor->on_up_pressed = [this] {
+        set_value(m_value + 1);
+    };
+    m_editor->on_down_pressed = [this] {
+        set_value(m_value - 1);
+    };
+
+    m_increment_button = add<ControlBoxButton>(ControlBoxButton::UpArrow);
+    m_increment_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
+    m_increment_button->on_click = [this](auto) { set_value(m_value + 1); };
+    m_increment_button->set_auto_repeat_interval(150);
+    m_decrement_button = add<ControlBoxButton>(ControlBoxButton::DownArrow);
+    m_decrement_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
+    m_decrement_button->on_click = [this](auto) { set_value(m_value - 1); };
+    m_decrement_button->set_auto_repeat_interval(150);
+
+    REGISTER_INT_PROPERTY("min", min, set_min);
+    REGISTER_INT_PROPERTY("max", max, set_max);
+}
+
+SpinBox::~SpinBox()
+{
+}
+
+void SpinBox::set_value(int value)
+{
+    value = clamp(value, m_min, m_max);
+    if (m_value == value)
+        return;
+    m_value = value;
+    m_editor->set_text(String::number(value));
+    update();
+    if (on_change)
+        on_change(value);
+}
+
+void SpinBox::set_range(int min, int max)
+{
+    ASSERT(min <= max);
+    if (m_min == min && m_max == max)
+        return;
+
+    m_min = min;
+    m_max = max;
+
+    int old_value = m_value;
+    m_value = clamp(m_value, m_min, m_max);
+    if (m_value != old_value) {
+        m_editor->set_text(String::number(m_value));
+        if (on_change)
+            on_change(m_value);
+    }
+
+    update();
+}
+
+void SpinBox::mousewheel_event(MouseEvent& event)
+{
+    set_value(m_value - event.wheel_delta());
+}
+
+void SpinBox::resize_event(ResizeEvent& event)
+{
+    int frame_thickness = m_editor->frame_thickness();
+    int button_height = (event.size().height() / 2) - frame_thickness;
+    int button_width = 15;
+    m_increment_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness, button_width, button_height);
+    m_decrement_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness + button_height, button_width, button_height);
+    m_editor->set_relative_rect(0, 0, width(), height());
+}
+
+}