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4c0f586f2b
This is essentially a combo widget containing a single-line GTextEditor and two buttons for increment and decrement. The GTextEditor::on_change callback is hooked to prevent non-numeric input but it's not entirely perfect since that callback is asynchronous. This will work until we have some more sophisticated input validation mechanism though.
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
#include <LibGUI/GSpinBox.h>
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#include <LibGUI/GButton.h>
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#include <LibGUI/GTextEditor.h>
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GSpinBox::GSpinBox(GWidget* parent)
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: GWidget(parent)
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{
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m_editor = new GTextEditor(GTextEditor::Type::SingleLine, this);
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m_editor->on_change = [this] {
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bool ok;
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int value = m_editor->text().to_uint(ok);
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if (ok)
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set_value(value);
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else
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m_editor->set_text(String::format("%d", m_value));
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};
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m_increment_button = new GButton(this);
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m_increment_button->set_caption("+");
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m_increment_button->on_click = [this] (GButton&) { set_value(m_value + 1); };
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m_decrement_button = new GButton(this);
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m_decrement_button->set_caption("-");
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m_decrement_button->on_click = [this] (GButton&) { set_value(m_value - 1); };
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}
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GSpinBox::~GSpinBox()
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{
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}
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void GSpinBox::set_value(int value)
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{
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if (value < m_min)
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value = m_min;
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if (value > m_max)
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value = 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::format("%d", value));
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update();
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if (on_change)
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on_change(value);
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}
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void GSpinBox::set_range(int min, int max)
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{
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ASSERT(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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if (m_value < m_min)
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m_value = m_min;
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if (m_value > m_max)
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m_value = m_max;
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if (on_change && m_value != old_value)
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on_change(m_value);
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update();
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}
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void GSpinBox::resize_event(GResizeEvent& event)
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{
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int button_height = event.size().height() / 2;
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int button_width = 16;
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m_increment_button->set_relative_rect(width() - button_width, 0, button_width, button_height);
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m_decrement_button->set_relative_rect(width() - button_width, button_height, button_width, button_height);
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m_editor->set_relative_rect(0, 0, width() - button_width, height());
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}
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