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ca538b6cee
You can now register a GWidget subclass with REGISTER_GWIDGET(class) and it will be available for factory construction through the new GWidgetClassRegistration interface. To obtain a GWidgetClassRegistration for a given class name, you call GWidgetClassRegistration::find(class_name). You can also iterate over all the registered classes using GWCR::for_each(callback). This will be very useful for implementing a proper GUI designer, and also in the future for things like script bindings. NOTE: All of the registrations are done in GWidget.cpp at the moment since I ran into trouble with the fricken linker pruning the global constructors this mechanism relies on. :^)
78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
#include <LibDraw/GraphicsBitmap.h>
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#include <LibGUI/GPainter.h>
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#include <LibGUI/GRadioButton.h>
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static RefPtr<GraphicsBitmap> s_unfilled_circle_bitmap;
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static RefPtr<GraphicsBitmap> s_filled_circle_bitmap;
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static RefPtr<GraphicsBitmap> s_changing_filled_circle_bitmap;
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static RefPtr<GraphicsBitmap> s_changing_unfilled_circle_bitmap;
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GRadioButton::GRadioButton(GWidget* parent)
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: GRadioButton({}, parent)
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{
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}
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GRadioButton::GRadioButton(const StringView& text, GWidget* parent)
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: GAbstractButton(text, parent)
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{
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if (!s_unfilled_circle_bitmap) {
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s_unfilled_circle_bitmap = GraphicsBitmap::load_from_file("/res/icons/unfilled-radio-circle.png");
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s_filled_circle_bitmap = GraphicsBitmap::load_from_file("/res/icons/filled-radio-circle.png");
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s_changing_filled_circle_bitmap = GraphicsBitmap::load_from_file("/res/icons/changing-filled-radio-circle.png");
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s_changing_unfilled_circle_bitmap = GraphicsBitmap::load_from_file("/res/icons/changing-unfilled-radio-circle.png");
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}
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}
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GRadioButton::~GRadioButton()
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{
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}
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Size GRadioButton::circle_size()
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{
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return s_unfilled_circle_bitmap->size();
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}
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static const GraphicsBitmap& circle_bitmap(bool checked, bool changing)
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{
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if (changing)
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return checked ? *s_changing_filled_circle_bitmap : *s_changing_unfilled_circle_bitmap;
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return checked ? *s_filled_circle_bitmap : *s_unfilled_circle_bitmap;
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}
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void GRadioButton::paint_event(GPaintEvent& event)
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{
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GPainter painter(*this);
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painter.add_clip_rect(event.rect());
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Rect circle_rect { { 2, 0 }, circle_size() };
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circle_rect.center_vertically_within(rect());
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auto& bitmap = circle_bitmap(is_checked(), is_being_pressed());
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painter.blit(circle_rect.location(), bitmap, bitmap.rect());
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Rect text_rect { circle_rect.right() + 4, 0, font().width(text()), font().glyph_height() };
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text_rect.center_vertically_within(rect());
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paint_text(painter, text_rect, font(), TextAlignment::TopLeft);
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}
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template<typename Callback>
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void GRadioButton::for_each_in_group(Callback callback)
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{
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if (!parent())
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return;
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parent()->for_each_child_of_type<GRadioButton>([&](auto& child) {
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return callback(static_cast<GRadioButton&>(child));
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});
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}
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void GRadioButton::click()
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{
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if (!is_enabled())
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return;
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for_each_in_group([this](auto& button) {
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if (&button != this)
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button.set_checked(false);
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return IterationDecision::Continue;
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});
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set_checked(true);
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}
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