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LibGUI: Add a GAbstractButton base class for button widgets.

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This patch moves GButton and GRadioButton to inherit from it. This allows
them to share code for mouse event handling, etc.
This commit is contained in:
Andreas Kling
2019-05-24 16:32:20 +02:00
parent abbcdba72e
commit 21c56477b0
18 changed files with 202 additions and 211 deletions
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70
LibGUI/GRadioButton.cpp
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@@ -7,9 +7,8 @@ static RetainPtr<GraphicsBitmap> s_filled_circle_bitmap;
static RetainPtr<GraphicsBitmap> s_changing_filled_circle_bitmap;
static RetainPtr<GraphicsBitmap> s_changing_unfilled_circle_bitmap;
GRadioButton::GRadioButton(const String& label, GWidget* parent)
: GWidget(parent)
, m_label(label)
GRadioButton::GRadioButton(const String& text, GWidget* parent)
: GAbstractButton(text, parent)
{
if (!s_unfilled_circle_bitmap) {
s_unfilled_circle_bitmap = GraphicsBitmap::load_from_file("/res/icons/unfilled-radio-circle.png");
@@ -43,13 +42,13 @@ void GRadioButton::paint_event(GPaintEvent& event)
Rect circle_rect { { 2, 0 }, circle_size() };
circle_rect.center_vertically_within(rect());
auto& bitmap = circle_bitmap(m_checked, m_changing);
auto& bitmap = circle_bitmap(is_checked(), is_being_pressed());
painter.blit(circle_rect.location(), bitmap, bitmap.rect());
if (!m_label.is_empty()) {
Rect text_rect { circle_rect.right() + 4, 0, font().width(m_label), font().glyph_height() };
if (!text().is_empty()) {
Rect text_rect { circle_rect.right() + 4, 0, font().width(text()), font().glyph_height() };
text_rect.center_vertically_within(rect());
painter.draw_text(text_rect, m_label, TextAlignment::CenterLeft, foreground_color());
painter.draw_text(text_rect, text(), TextAlignment::CenterLeft, foreground_color());
}
}
@@ -67,56 +66,13 @@ void GRadioButton::for_each_in_group(Callback callback)
}
}
void GRadioButton::mousedown_event(GMouseEvent& event)
void GRadioButton::click()
{
if (event.button() != GMouseButton::Left)
if (!is_enabled())
return;
m_changing = rect().contains(event.position());
m_tracking = true;
update();
}
void GRadioButton::mousemove_event(GMouseEvent& event)
{
if (m_tracking) {
bool old_changing = m_changing;
m_changing = rect().contains(event.position());
if (old_changing != m_changing)
update();
}
}
void GRadioButton::mouseup_event(GMouseEvent& event)
{
if (event.button() != GMouseButton::Left)
return;
if (rect().contains(event.position())) {
for_each_in_group([this] (auto& button) {
if (&button != this)
button.set_checked(false);
});
set_checked(true);
}
m_changing = false;
m_tracking = false;
update();
}
void GRadioButton::set_label(const String& label)
{
if (m_label == label)
return;
m_label = label;
update();
}
void GRadioButton::set_checked(bool checked)
{
if (m_checked == checked)
return;
m_checked = checked;
update();
for_each_in_group([this] (auto& button) {
if (&button != this)
button.set_checked(false);
});
set_checked(true);
}