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GTreeView: Add basic selection support.

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This commit is contained in:
Andreas Kling 2019-03-29 20:36:15 +01:00
parent 967eec1e52
commit 1963391ca6
4 changed files with 44 additions and 26 deletions
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24
LibGUI/GTreeView.cpp
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@ -144,16 +144,17 @@ void GTreeView::mousedown_event(GMouseEvent& event)
auto& model = *this->model();
auto adjusted_position = event.position().translated(horizontal_scrollbar().value() - frame_thickness(), vertical_scrollbar().value() - frame_thickness());
auto index = index_at_content_position(adjusted_position);
if (!index.is_valid()) {
dbgprintf("GTV::mousedown: No valid index at %s (adjusted to: %s)\n", event.position().to_string().characters(), adjusted_position.to_string().characters());
if (!index.is_valid())
return;
if (model.selected_index() != index) {
model.set_selected_index(index);
update();
}
dbgprintf("GTV::mousedown: Index %d,%d {%p}] at %s (adjusted to: %s)\n", index.row(), index.column(), index.internal_data(), event.position().to_string().characters(), adjusted_position.to_string().characters());
auto& metadata = ensure_metadata_for_index(index);
if (model.row_count(index)) {
auto& metadata = ensure_metadata_for_index(index);
metadata.open = !metadata.open;
dbgprintf("GTV::mousedown: toggle index %d,%d {%p} open: %d -> %d\n", index.row(), index.column(), index.internal_data(), !metadata.open, metadata.open);
update();
}
}
@ -174,7 +175,7 @@ void GTreeView::traverse_in_paint_order(Callback callback) const
auto node_text = model.data(index, GModel::Role::Display).to_string();
Rect rect = {
x_offset, y_offset,
toggle_size() + icon_spacing() + icon_size() + icon_spacing() + font().width(node_text), item_height()
icon_size() + icon_spacing() + font().width(node_text) + icon_spacing(), item_height()
};
if (rect.intersects(visible_content_rect)) {
if (callback(index, rect, indent_level) == IterationDecision::Abort)
@ -215,6 +216,15 @@ void GTreeView::paint_event(GPaintEvent& event)
#ifdef DEBUG_ITEM_RECTS
painter.fill_rect(rect, Color::LightGray);
#endif
Color background_color = Color::from_rgb(0xffffff);
Color text_color = Color::from_rgb(0x000000);
if (index == model.selected_index()) {
background_color = is_focused() ? Color::from_rgb(0x84351a) : Color::from_rgb(0x606060);
text_color = Color::from_rgb(0xffffff);
painter.fill_rect(rect, background_color);
}
Rect icon_rect = { rect.x(), rect.y(), icon_size(), icon_size() };
auto icon = model.data(index, GModel::Role::Icon);
if (icon.is_icon()) {
@ -226,7 +236,7 @@ void GTreeView::paint_event(GPaintEvent& event)
rect.width() - icon_size() - icon_spacing(), rect.height()
};
auto node_text = model.data(index, GModel::Role::Display).to_string();
painter.draw_text(text_rect, node_text, TextAlignment::CenterLeft, Color::Black);
painter.draw_text(text_rect, node_text, TextAlignment::CenterLeft, text_color);
auto index_at_indent = index;
for (int i = indent_level; i >= 0; --i) {
auto parent_of_index_at_indent = index_at_indent.parent();