mirror of
https://github.com/LadybirdBrowser/ladybird.git
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132 lines
4.2 KiB
C++
132 lines
4.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/StringBuilder.h>
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#include <Kernel/KeyCode.h>
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#include <LibGUI/Action.h>
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#include <LibGUI/ActionGroup.h>
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#include <LibGUI/Button.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/Font.h>
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#include <LibGfx/Palette.h>
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#include <LibGfx/StylePainter.h>
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namespace GUI {
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Button::Button(const StringView& text)
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: AbstractButton(text)
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{
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}
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Button::~Button()
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{
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if (m_action)
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m_action->unregister_button({}, *this);
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}
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void Button::paint_event(PaintEvent& event)
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{
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Painter painter(*this);
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painter.add_clip_rect(event.rect());
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Gfx::StylePainter::paint_button(painter, rect(), palette(), m_button_style, is_being_pressed(), is_hovered(), is_checked(), is_enabled());
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if (text().is_empty() && !m_icon)
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return;
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auto content_rect = rect().shrunken(8, 2);
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auto icon_location = m_icon ? content_rect.center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2)) : Gfx::Point();
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if (m_icon && !text().is_empty())
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icon_location.set_x(content_rect.x());
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if (is_being_pressed() || is_checked())
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painter.translate(1, 1);
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if (m_icon) {
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if (is_enabled()) {
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if (is_hovered())
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painter.blit_brightened(icon_location, *m_icon, m_icon->rect());
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else
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painter.blit(icon_location, *m_icon, m_icon->rect());
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} else {
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painter.blit_dimmed(icon_location, *m_icon, m_icon->rect());
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}
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}
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auto& font = is_checked() ? Gfx::Font::default_bold_font() : this->font();
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if (m_icon && !text().is_empty()) {
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content_rect.move_by(m_icon->width() + 4, 0);
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content_rect.set_width(content_rect.width() - m_icon->width() - 4);
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}
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Gfx::Rect text_rect { 0, 0, font.width(text()), font.glyph_height() };
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if (text_rect.width() > content_rect.width())
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text_rect.set_width(content_rect.width());
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text_rect.align_within(content_rect, text_alignment());
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paint_text(painter, text_rect, font, text_alignment());
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}
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void Button::click(unsigned modifiers)
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{
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if (!is_enabled())
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return;
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if (is_checkable()) {
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if (is_checked() && !is_uncheckable())
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return;
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set_checked(!is_checked());
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}
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if (on_click)
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on_click(modifiers);
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if (m_action)
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m_action->activate(this);
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}
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void Button::set_action(Action& action)
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{
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m_action = action.make_weak_ptr();
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action.register_button({}, *this);
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set_enabled(action.is_enabled());
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set_checkable(action.is_checkable());
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if (action.is_checkable())
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set_checked(action.is_checked());
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}
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void Button::set_icon(RefPtr<Gfx::Bitmap>&& icon)
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{
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if (m_icon == icon)
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return;
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m_icon = move(icon);
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update();
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}
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bool Button::is_uncheckable() const
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{
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if (!m_action)
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return true;
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if (!m_action->group())
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return true;
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return m_action->group()->is_unchecking_allowed();
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}
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}
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