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92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGUI/Event.h>
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#include <LibGfx/StylePainter.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/HTMLInputElement.h>
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#include <LibWeb/Layout/Label.h>
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#include <LibWeb/Layout/RadioButton.h>
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#include <LibWeb/Painting/InputColors.h>
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#include <LibWeb/Painting/RadioButtonPaintable.h>
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namespace Web::Painting {
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JS_DEFINE_ALLOCATOR(RadioButtonPaintable);
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JS::NonnullGCPtr<RadioButtonPaintable> RadioButtonPaintable::create(Layout::RadioButton const& layout_box)
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{
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return layout_box.heap().allocate_without_realm<RadioButtonPaintable>(layout_box);
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}
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RadioButtonPaintable::RadioButtonPaintable(Layout::RadioButton const& layout_box)
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: LabelablePaintable(layout_box)
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{
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}
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void RadioButtonPaintable::paint(PaintContext& context, PaintPhase phase) const
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{
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if (!is_visible())
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return;
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PaintableBox::paint(context, phase);
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if (phase != PaintPhase::Foreground)
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return;
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auto draw_circle = [&](auto const& rect, Color color) {
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// Note: Doing this is a bit more forgiving than draw_circle() which will round to the nearset even radius.
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// This will fudge it (which works better here).
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context.recording_painter().fill_rect_with_rounded_corners(rect, color, rect.width() / 2);
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};
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auto shrink_all = [&](auto const& rect, int amount) {
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return rect.shrunken(amount, amount, amount, amount);
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};
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auto const& radio_button = static_cast<HTML::HTMLInputElement const&>(layout_box().dom_node());
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auto& palette = context.palette();
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bool enabled = layout_box().dom_node().enabled();
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auto input_colors = compute_input_colors(palette, computed_values().accent_color());
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auto background_color = input_colors.background_color(enabled);
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auto accent = input_colors.accent;
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auto radio_color = [&] {
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if (radio_button.checked()) {
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// Handle the awkward case where a light color has been used for the accent color.
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if (accent.contrast_ratio(background_color) < 2 && accent.contrast_ratio(input_colors.dark_gray) > 2)
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background_color = input_colors.dark_gray;
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return accent;
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}
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return input_colors.gray;
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};
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auto fill_color = [&] {
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if (!enabled)
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return input_colors.mid_gray;
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auto color = radio_color();
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if (being_pressed())
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color = InputColors::get_shade(color, 0.3f, palette.is_dark());
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return color;
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}();
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// This is based on a 1px outer border and 2px inner border when drawn at 13x13.
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auto radio_button_rect = context.enclosing_device_rect(absolute_rect()).to_type<int>();
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auto outer_border_width = max(1, static_cast<int>(ceilf(radio_button_rect.width() / 13.0f)));
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auto inner_border_width = max(2, static_cast<int>(ceilf(radio_button_rect.width() / 4.0f)));
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draw_circle(radio_button_rect, fill_color);
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draw_circle(shrink_all(radio_button_rect, outer_border_width), background_color);
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if (radio_button.checked())
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draw_circle(shrink_all(radio_button_rect, inner_border_width), fill_color);
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}
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}
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