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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/StringBuilder.h>
#include <Kernel/KeyCode.h>
#include <LibGUI/Action.h>
#include <LibGUI/ActionGroup.h>
#include <LibGUI/Button.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Font.h>
#include <LibGfx/Palette.h>
#include <LibGfx/StylePainter.h>
namespace GUI {
Button::Button(const StringView& text)
: AbstractButton(text)
{
}
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());
Gfx::StylePainter::paint_button(painter, rect(), palette(), m_button_style, is_being_pressed(), is_hovered(), is_checked(), is_enabled());
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::Point();
if (m_icon && !text().is_empty())
icon_location.set_x(content_rect.x());
if (is_being_pressed() || is_checked())
painter.translate(1, 1);
if (m_icon) {
if (is_enabled())
painter.blit(icon_location, *m_icon, m_icon->rect());
else
painter.blit_dimmed(icon_location, *m_icon, m_icon->rect());
}
auto& font = is_checked() ? Gfx::Font::default_bold_font() : this->font();
if (m_icon && !text().is_empty()) {
content_rect.move_by(m_icon->width() + 4, 0);
content_rect.set_width(content_rect.width() - m_icon->width() - 4);
}
Gfx::Rect 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());
}
void Button::click()
{
if (!is_enabled())
return;
if (is_checkable()) {
if (is_checked() && !is_uncheckable())
return;
set_checked(!is_checked());
}
if (on_click)
on_click(*this);
if (m_action)
m_action->activate(this);
}
void Button::set_action(Action& action)
{
m_action = action.make_weak_ptr();
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();
}
bool Button::is_uncheckable() const
{
if (!m_action)
return true;
if (!m_action->group())
return true;
return m_action->group()->is_unchecking_allowed();
}
}
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