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#include <LibGUI/GItemView.h>
#include <LibGUI/GModel.h>
#include <LibGUI/GScrollBar.h>
#include <LibGUI/GPainter.h>
#include <Kernel/KeyCode.h>
GItemView::GItemView(GWidget* parent)
: GAbstractView(parent)
{
set_frame_shape(FrameShape::Container);
set_frame_shadow(FrameShadow::Sunken);
set_frame_thickness(2);
horizontal_scrollbar().set_visible(false);
}
GItemView::~GItemView()
{
}
void GItemView::scroll_into_view(const GModelIndex& index, Orientation orientation)
{
GScrollableWidget::scroll_into_view(item_rect(index.row()), orientation);
}
void GItemView::resize_event(GResizeEvent& event)
{
GAbstractView::resize_event(event);
update_content_size();
}
void GItemView::did_update_model()
{
GAbstractView::did_update_model();
update_content_size();
update();
}
void GItemView::update_content_size()
{
if (!model())
return set_content_size({ });
m_visual_column_count = available_size().width() / effective_item_size().width();
if (m_visual_column_count)
m_visual_row_count = ceil_div(model()->row_count(), m_visual_column_count);
else
m_visual_row_count = 0;
int content_width = available_size().width();
int content_height = m_visual_row_count * effective_item_size().height();
set_content_size({ content_width, content_height });
}
Rect GItemView::item_rect(int item_index) const
{
if (!m_visual_row_count || !m_visual_column_count)
return { };
int visual_row_index = item_index / m_visual_column_count;
int visual_column_index = item_index % m_visual_column_count;
return {
visual_column_index * effective_item_size().width(),
visual_row_index * effective_item_size().height(),
effective_item_size().width(),
effective_item_size().height()
};
}
void GItemView::mousedown_event(GMouseEvent& event)
{
if (event.button() == GMouseButton::Left) {
// FIXME: Since all items are the same size, just compute the clicked item index
// instead of iterating over everything.
auto adjusted_position = event.position().translated(0, vertical_scrollbar().value());
for (int i = 0; i < item_count(); ++i) {
if (item_rect(i).contains(adjusted_position)) {
model()->set_selected_index(model()->index(i, 0));
update();
return;
}
}
model()->set_selected_index({ });
update();
}
}
void GItemView::doubleclick_event(GMouseEvent& event)
{
if (!model())
return;
if (event.button() == GMouseButton::Left) {
mousedown_event(event);
activate(model()->selected_index());
}
}
void GItemView::paint_event(GPaintEvent& event)
{
GFrame::paint_event(event);
GPainter painter(*this);
painter.add_clip_rect(widget_inner_rect());
painter.add_clip_rect(event.rect());
painter.fill_rect(event.rect(), Color::White);
painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
auto column_metadata = model()->column_metadata(m_model_column);
const Font& font = column_metadata.font ? *column_metadata.font : this->font();
for (int item_index = 0; item_index < model()->row_count(); ++item_index) {
bool is_selected_item = item_index == model()->selected_index().row();
Color background_color;
if (is_selected_item) {
background_color = is_focused() ? Color::from_rgb(0x84351a) : Color::from_rgb(0x606060);
} else {
background_color = Color::White;
}
Rect item_rect = this->item_rect(item_index);
auto model_index = model()->index(item_index, m_model_column);
auto icon = model()->data(model_index, GModel::Role::Icon);
auto item_text = model()->data(model_index, GModel::Role::Display);
Rect icon_rect = { 0, 0, 32, 32 };
icon_rect.center_within(item_rect);
icon_rect.move_by(0, -font.glyph_height() - 6);
if (icon.is_icon()) {
if (auto bitmap = icon.as_icon().bitmap_for_size(icon_rect.width()))
painter.draw_scaled_bitmap(icon_rect, *bitmap, bitmap->rect());
}
Rect text_rect { 0, icon_rect.bottom() + 6 + 1, font.width(item_text.to_string()), font.glyph_height() };
text_rect.center_horizontally_within(item_rect);
text_rect.inflate(6, 4);
Color text_color;
if (is_selected_item)
text_color = Color::White;
else
text_color = model()->data(model_index, GModel::Role::ForegroundColor).to_color(Color::Black);
painter.fill_rect(text_rect, background_color);
painter.draw_text(text_rect, item_text.to_string(), font, TextAlignment::Center, text_color);
};
}
int GItemView::item_count() const
{
if (!model())
return 0;
return model()->row_count();
}
void GItemView::keydown_event(GKeyEvent& event)
{
if (!model())
return;
if (!m_visual_row_count || !m_visual_column_count)
return;
auto& model = *this->model();
if (event.key() == KeyCode::Key_Return) {
activate(model.selected_index());
return;
}
if (event.key() == KeyCode::Key_Home) {
auto new_index = model.index(0, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_End) {
auto new_index = model.index(model.row_count() - 1, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_Up) {
GModelIndex new_index;
if (model.selected_index().is_valid())
new_index = model.index(model.selected_index().row() - m_visual_column_count, model.selected_index().column());
else
new_index = model.index(0, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_Down) {
GModelIndex new_index;
if (model.selected_index().is_valid())
new_index = model.index(model.selected_index().row() + m_visual_column_count, model.selected_index().column());
else
new_index = model.index(0, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_Left) {
GModelIndex new_index;
if (model.selected_index().is_valid())
new_index = model.index(model.selected_index().row() - 1, model.selected_index().column());
else
new_index = model.index(0, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_Right) {
GModelIndex new_index;
if (model.selected_index().is_valid())
new_index = model.index(model.selected_index().row() + 1, model.selected_index().column());
else
new_index = model.index(0, 0);
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_PageUp) {
int items_per_page = (visible_content_rect().height() / effective_item_size().height()) * m_visual_column_count;
auto new_index = model.index(max(0, model.selected_index().row() - items_per_page), model.selected_index().column());
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
if (event.key() == KeyCode::Key_PageDown) {
int items_per_page = (visible_content_rect().height() / effective_item_size().height()) * m_visual_column_count;
auto new_index = model.index(min(model.row_count() - 1, model.selected_index().row() + items_per_page), model.selected_index().column());
if (model.is_valid(new_index)) {
model.set_selected_index(new_index);
scroll_into_view(new_index, Orientation::Vertical);
update();
}
return;
}
return GWidget::keydown_event(event);
}
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