92fffc3abc
This is a helpful option to prevent unwanted side effects, distinguish between user and programmatic input, etc. Sliders and SpinBoxes were implementing it idiosyncratically, so let's generalize the API and give Buttons and TextEditors the same ability.
106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGUI/Button.h>
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#include <LibGUI/SpinBox.h>
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#include <LibGUI/TextBox.h>
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REGISTER_WIDGET(GUI, SpinBox)
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namespace GUI {
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SpinBox::SpinBox()
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{
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set_min_width(32);
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set_fixed_height(22);
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m_editor = add<TextBox>();
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m_editor->set_text("0");
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m_editor->on_change = [this] {
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auto value = m_editor->text().to_uint();
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if (value.has_value())
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set_value(value.value());
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else
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m_editor->set_text(String::number(m_value));
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};
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m_editor->on_up_pressed = [this] {
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set_value(m_value + 1);
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};
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m_editor->on_down_pressed = [this] {
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set_value(m_value - 1);
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};
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m_increment_button = add<Button>();
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m_increment_button->set_button_style(Gfx::ButtonStyle::ThickCap);
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m_increment_button->set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/upward-triangle.png"));
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m_increment_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
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m_increment_button->on_click = [this](auto) { set_value(m_value + 1); };
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m_increment_button->set_auto_repeat_interval(150);
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m_decrement_button = add<Button>();
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m_decrement_button->set_button_style(Gfx::ButtonStyle::ThickCap);
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m_decrement_button->set_icon(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/downward-triangle.png"));
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m_decrement_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
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m_decrement_button->on_click = [this](auto) { set_value(m_value - 1); };
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m_decrement_button->set_auto_repeat_interval(150);
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REGISTER_INT_PROPERTY("min", min, set_min);
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REGISTER_INT_PROPERTY("max", max, set_max);
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}
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SpinBox::~SpinBox()
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{
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}
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void SpinBox::set_value(int value, AllowCallback allow_callback)
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{
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value = clamp(value, m_min, m_max);
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if (m_value == value)
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return;
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m_value = value;
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m_editor->set_text(String::number(value));
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update();
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if (on_change && allow_callback == AllowCallback::Yes)
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on_change(value);
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}
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void SpinBox::set_range(int min, int max, AllowCallback allow_callback)
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{
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VERIFY(min <= max);
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if (m_min == min && m_max == max)
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return;
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m_min = min;
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m_max = max;
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int old_value = m_value;
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m_value = clamp(m_value, m_min, m_max);
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if (m_value != old_value) {
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m_editor->set_text(String::number(m_value));
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if (on_change && allow_callback == AllowCallback::Yes)
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on_change(m_value);
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}
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update();
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}
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void SpinBox::mousewheel_event(MouseEvent& event)
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{
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auto wheel_delta = event.wheel_delta() / abs(event.wheel_delta());
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if (event.modifiers() == KeyModifier::Mod_Ctrl)
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wheel_delta *= 6;
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set_value(m_value - wheel_delta);
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}
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void SpinBox::resize_event(ResizeEvent& event)
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{
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int frame_thickness = m_editor->frame_thickness();
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int button_height = (event.size().height() / 2) - frame_thickness;
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int button_width = 15;
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m_increment_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness, button_width, button_height);
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m_decrement_button->set_relative_rect(width() - button_width - frame_thickness, frame_thickness + button_height, button_width, button_height);
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m_editor->set_relative_rect(0, 0, width(), height());
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}
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}
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