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LibGUI: Fix broken TreeView rendering with more than two columns

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The computation of the tree column x offset was not taking padding into
account. This patch fixes that and collects the logic in a helper.
This commit is contained in:
Andreas Kling 2020-03-02 21:36:01 +01:00
parent 2719d6d502
commit 8e8e8c801c
2 changed files with 18 additions and 13 deletions
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30
Libraries/LibGUI/TreeView.cpp
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@ -125,13 +125,7 @@ void TreeView::traverse_in_paint_order(Callback callback) const
auto& model = *this->model();
int indent_level = 1;
int y_offset = 0;
int tree_column = model.tree_column();
int tree_column_x_offset = 0;
for (int i = 0; i < tree_column; ++i) {
if (!is_column_hidden(i))
tree_column_x_offset += column_width(i);
}
int tree_column_x_offset = this->tree_column_x_offset();
Function<IterationDecision(const ModelIndex&)> traverse_index = [&](const ModelIndex& index) {
int row_count_at_index = model.row_count(index);
@ -145,7 +139,7 @@ void TreeView::traverse_in_paint_order(Callback callback) const
};
Gfx::Rect toggle_rect;
if (row_count_at_index > 0) {
int toggle_x = tree_column_x_offset + horizontal_padding() + indent_width_in_pixels() * indent_level - icon_size() / 2 - 4;
int toggle_x = tree_column_x_offset + horizontal_padding() + (indent_width_in_pixels() * indent_level) - (icon_size() / 2) - 4;
toggle_rect = { toggle_x, rect.y(), toggle_size(), toggle_size() };
toggle_rect.center_vertically_within(rect);
}
@ -190,11 +184,8 @@ void TreeView::paint_event(PaintEvent& event)
auto visible_content_rect = this->visible_content_rect();
int tree_column = model.tree_column();
int tree_column_x_offset = 0;
for (int i = 0; i < tree_column; ++i) {
if (!is_column_hidden(i))
tree_column_x_offset += column_width(i);
}
int tree_column_x_offset = this->tree_column_x_offset();
int y_offset = header_height();
int painted_row_index = 0;
@ -517,4 +508,17 @@ void TreeView::update_column_sizes()
column_data.has_initialized_width = true;
}
int TreeView::tree_column_x_offset() const
{
int tree_column = model()->tree_column();
int offset = 0;
for (int i = 0; i < tree_column; ++i) {
if (!is_column_hidden(i)) {
offset += column_width(i);
offset += horizontal_padding();
}
}
return offset;
}
}