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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Button.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Font.h>
#include <LibGfx/Palette.h>
#include <LibGfx/StylePainter.h>
REGISTER_WIDGET(GUI, Button)
namespace GUI {
Button::Button(String text)
: AbstractButton(move(text))
{
set_min_width(32);
set_fixed_height(22);
set_focus_policy(GUI::FocusPolicy::StrongFocus);
REGISTER_ENUM_PROPERTY(
"button_style", button_style, set_button_style, Gfx::ButtonStyle,
{ Gfx::ButtonStyle::Normal, "Normal" },
{ Gfx::ButtonStyle::Coolbar, "Coolbar" });
REGISTER_STRING_PROPERTY("icon", icon, set_icon_from_path);
}
Button::~Button()
{
if (m_action)
m_action->unregister_button({}, *this);
}
void Button::paint_event(PaintEvent& event)
{
Painter painter(*this);
painter.add_clip_rect(event.rect());
bool paint_pressed = is_being_pressed() || (m_menu && m_menu->is_visible());
Gfx::StylePainter::paint_button(painter, rect(), palette(), m_button_style, paint_pressed, is_hovered(), is_checked(), is_enabled(), is_focused());
if (text().is_empty() && !m_icon)
return;
auto content_rect = rect().shrunken(8, 2);
auto icon_location = m_icon ? content_rect.center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2)) : Gfx::IntPoint();
if (m_icon && !text().is_empty())
icon_location.set_x(content_rect.x());
if (paint_pressed || is_checked()) {
painter.translate(1, 1);
} else if (m_icon && is_enabled() && is_hovered() && button_style() == Gfx::ButtonStyle::Coolbar) {
auto shadow_color = palette().button().darkened(0.7f);
painter.blit_filtered(icon_location.translated(1, 1), *m_icon, m_icon->rect(), [&shadow_color](auto) {
return shadow_color;
});
icon_location.translate_by(-1, -1);
}
if (m_icon) {
if (is_enabled()) {
if (is_hovered())
painter.blit_brightened(icon_location, *m_icon, m_icon->rect());
else
painter.blit(icon_location, *m_icon, m_icon->rect());
} else {
painter.blit_disabled(icon_location, *m_icon, m_icon->rect(), palette());
}
}
auto& font = is_checked() ? this->font().bold_variant() : this->font();
if (m_icon && !text().is_empty()) {
content_rect.translate_by(m_icon->width() + icon_spacing(), 0);
content_rect.set_width(content_rect.width() - m_icon->width() - icon_spacing());
}
Gfx::IntRect text_rect { 0, 0, font.width(text()), font.glyph_height() };
if (text_rect.width() > content_rect.width())
text_rect.set_width(content_rect.width());
text_rect.align_within(content_rect, text_alignment());
paint_text(painter, text_rect, font, text_alignment());
if (is_focused()) {
Gfx::IntRect focus_rect;
if (m_icon && !text().is_empty())
focus_rect = text_rect.inflated(4, 4);
else
focus_rect = rect().shrunken(8, 8);
painter.draw_focus_rect(focus_rect, palette().focus_outline());
}
}
void Button::click(unsigned modifiers)
{
if (!is_enabled())
return;
NonnullRefPtr protector = *this;
if (is_checkable()) {
if (is_checked() && !is_uncheckable())
return;
set_checked(!is_checked());
}
if (on_click)
on_click(modifiers);
if (m_action)
m_action->activate(this);
}
void Button::context_menu_event(ContextMenuEvent& context_menu_event)
{
if (!is_enabled())
return;
if (on_context_menu_request)
on_context_menu_request(context_menu_event);
}
void Button::set_action(Action& action)
{
m_action = action;
action.register_button({}, *this);
set_enabled(action.is_enabled());
set_checkable(action.is_checkable());
if (action.is_checkable())
set_checked(action.is_checked());
}
void Button::set_icon(RefPtr<Gfx::Bitmap> icon)
{
if (m_icon == icon)
return;
m_icon = move(icon);
update();
}
void Button::set_icon_from_path(String const& path)
{
auto maybe_bitmap = Gfx::Bitmap::try_load_from_file(path);
if (maybe_bitmap.is_error()) {
dbgln("Unable to load bitmap `{}` for button icon", path);
return;
}
set_icon(maybe_bitmap.release_value());
}
bool Button::is_uncheckable() const
{
if (!m_action)
return true;
if (!m_action->group())
return true;
return m_action->group()->is_unchecking_allowed();
}
void Button::set_menu(RefPtr<GUI::Menu> menu)
{
if (m_menu == menu)
return;
if (m_menu)
m_menu->on_visibility_change = nullptr;
m_menu = menu;
if (m_menu) {
m_menu->on_visibility_change = [&](bool) {
update();
};
}
}
void Button::mousedown_event(MouseEvent& event)
{
if (m_menu) {
m_menu->popup(screen_relative_rect().top_left());
update();
return;
}
AbstractButton::mousedown_event(event);
}
void Button::mousemove_event(MouseEvent& event)
{
if (m_menu) {
return;
}
AbstractButton::mousemove_event(event);
}
}
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