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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Utf8View.h>
#include <LibGUI/Label.h>
#include <LibGUI/Painter.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Palette.h>
#include <LibGfx/TextLayout.h>
#include <LibGfx/TextWrapping.h>
REGISTER_WIDGET(GUI, Label)
namespace GUI {
Label::Label(String text)
: m_text(move(text))
{
REGISTER_TEXT_ALIGNMENT_PROPERTY("text_alignment", text_alignment, set_text_alignment);
REGISTER_TEXT_WRAPPING_PROPERTY("text_wrapping", text_wrapping, set_text_wrapping);
set_preferred_size({ SpecialDimension::OpportunisticGrow });
set_min_height(22);
set_frame_thickness(0);
set_frame_shadow(Gfx::FrameShadow::Plain);
set_frame_shape(Gfx::FrameShape::NoFrame);
set_foreground_role(Gfx::ColorRole::WindowText);
REGISTER_STRING_PROPERTY("text", text, set_text);
REGISTER_BOOL_PROPERTY("autosize", is_autosize, set_autosize);
REGISTER_STRING_PROPERTY("icon", icon, set_icon_from_path);
}
void Label::set_autosize(bool autosize, size_t padding)
{
if (m_autosize == autosize && m_autosize_padding == padding)
return;
m_autosize = autosize;
m_autosize_padding = padding;
if (m_autosize)
size_to_fit();
}
void Label::set_icon(Gfx::Bitmap const* icon)
{
if (m_icon == icon)
return;
m_icon = icon;
update();
}
void Label::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 label icon", path);
return;
}
set_icon(maybe_bitmap.release_value());
}
void Label::set_text(String text)
{
if (text == m_text)
return;
m_text = move(text);
if (m_autosize)
size_to_fit();
update();
did_change_text();
}
Gfx::IntRect Label::text_rect() const
{
return frame_inner_rect().shrunken(frame_thickness() > 0 ? font().glyph_width('x') : 0, 0);
}
void Label::paint_event(PaintEvent& event)
{
Frame::paint_event(event);
Painter painter(*this);
painter.add_clip_rect(event.rect());
if (m_icon) {
if (m_should_stretch_icon) {
painter.draw_scaled_bitmap(frame_inner_rect(), *m_icon, m_icon->rect());
} else {
auto icon_location = frame_inner_rect().center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2));
painter.blit(icon_location, *m_icon, m_icon->rect());
}
}
if (text().is_empty())
return;
auto text_rect = this->text_rect();
if (is_enabled()) {
painter.draw_text(text_rect, text(), text_alignment(), palette().color(foreground_role()), Gfx::TextElision::Right, text_wrapping());
} else {
painter.draw_text(text_rect.translated(1, 1), text(), font(), text_alignment(), palette().disabled_text_back(), Gfx::TextElision::Right, text_wrapping());
painter.draw_text(text_rect, text(), font(), text_alignment(), palette().disabled_text_front(), Gfx::TextElision::Right, text_wrapping());
}
}
void Label::size_to_fit()
{
set_fixed_width(font().width(m_text) + m_autosize_padding * 2);
}
int Label::text_calculated_preferred_height() const
{
// FIXME: The 4 is taken from Gfx::Painter and should be available as
// a constant instead.
return Gfx::TextLayout(&font(), Utf8View { m_text }, text_rect()).bounding_rect(Gfx::TextWrapping::Wrap, 4).height();
}
Optional<UISize> Label::calculated_preferred_size() const
{
return GUI::UISize(SpecialDimension::Grow, text_calculated_preferred_height());
}
}
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