bsnes/hiro/gtk/widget/tree-view-item.cpp

142 lines
4.4 KiB
C++
Executable File

#if defined(Hiro_TreeView)
namespace hiro {
auto pTreeViewItem::construct() -> void {
if(auto parentWidget = _parentWidget()) {
if(auto parentItem = _parentItem()) {
gtk_tree_store_append(parentWidget->gtkTreeStore, &gtkIter, &parentItem->gtkIter);
} else {
gtk_tree_store_append(parentWidget->gtkTreeStore, &gtkIter, nullptr);
}
setChecked(state().checked);
setIcon(state().icon);
setText(state().text);
}
}
auto pTreeViewItem::destruct() -> void {
if(auto parent = _parentWidget()) {
gtk_tree_store_remove(parent->gtkTreeStore, &gtkIter);
}
}
//
auto pTreeViewItem::append(sTreeViewItem item) -> void {
}
auto pTreeViewItem::remove(sTreeViewItem item) -> void {
}
auto pTreeViewItem::setBackgroundColor(Color color) -> void {
}
auto pTreeViewItem::setCheckable(bool checkable) -> void {
_updateWidth();
}
auto pTreeViewItem::setChecked(bool checked) -> void {
if(auto parentWidget = _parentWidget()) {
gtk_tree_store_set(parentWidget->gtkTreeStore, &gtkIter, 0, checked, -1);
}
}
auto pTreeViewItem::setExpanded(bool expanded) -> void {
if(auto parentWidget = _parentWidget()) {
auto path = gtk_tree_model_get_path(parentWidget->gtkTreeModel, &gtkIter);
if(expanded) {
gtk_tree_view_expand_row(parentWidget->gtkTreeView, path, false);
//if you collapse a parent node, GTK collapses all child nodes
//this isn't very desirable, so restore any child expansions recursively here
for(auto& item : state().items) {
item->setExpanded(item->expanded());
}
} else {
gtk_tree_view_collapse_row(parentWidget->gtkTreeView, path);
}
gtk_tree_path_free(path);
}
}
auto pTreeViewItem::setFocused() -> void {
if(auto parentWidget = _parentWidget()) {
GtkTreePath* path = gtk_tree_path_new_from_string(self().path().transform("/", ":"));
gtk_tree_view_set_cursor(parentWidget->gtkTreeView, path, nullptr, false);
gtk_tree_view_scroll_to_cell(parentWidget->gtkTreeView, path, nullptr, true, 0.5, 0.0);
gtk_tree_path_free(path);
}
}
auto pTreeViewItem::setForegroundColor(Color color) -> void {
}
auto pTreeViewItem::setIcon(const image& icon) -> void {
if(auto parentWidget = _parentWidget()) {
if(icon) {
auto pixbuf = CreatePixbuf(icon);
gtk_tree_store_set(parentWidget->gtkTreeStore, &gtkIter, 1, pixbuf, -1);
} else {
gtk_tree_store_set(parentWidget->gtkTreeStore, &gtkIter, 1, nullptr, -1);
}
}
_updateWidth();
}
auto pTreeViewItem::setSelected() -> void {
if(auto parentWidget = _parentWidget()) {
parentWidget->lock();
//in order to select an item, it must first be visible
auto gtkPath = gtk_tree_model_get_path(parentWidget->gtkTreeModel, &gtkIter);
gtk_tree_view_expand_to_path(parentWidget->gtkTreeView, gtkPath);
gtk_tree_path_free(gtkPath);
gtk_tree_selection_select_iter(parentWidget->gtkTreeSelection, &gtkIter);
parentWidget->unlock();
}
}
auto pTreeViewItem::setText(const string& text) -> void {
if(auto parentWidget = _parentWidget()) {
gtk_tree_store_set(parentWidget->gtkTreeStore, &gtkIter, 2, (const char*)text, -1);
}
_updateWidth();
}
//
//recursive function to find the minimum (pre-computed / cached) width of a TreeViewItem tree
auto pTreeViewItem::_minimumWidth(uint depth) -> uint {
uint width = TreeViewIndentation * depth + _width;
for(auto& item : state().items) {
if(auto self = item->self()) {
width = max(width, self->_minimumWidth(depth + 1));
}
}
return width;
}
auto pTreeViewItem::_parentItem() -> pTreeViewItem* {
if(auto parentItem = self().parentTreeViewItem()) return parentItem->self();
return nullptr;
}
auto pTreeViewItem::_parentWidget() -> pTreeView* {
if(auto parentWidget = self().parentTreeView(true)) return parentWidget->self();
return nullptr;
}
//this is called any time a TreeViewItem's checkability, icon, or text is updated
//in other words, whenever the width of the item might have changed
//it may change the requirement of the TreeView needing a scrollbar, so notify the TreeView as well
auto pTreeViewItem::_updateWidth() -> void {
_width = 4;
if(state().checkable) _width += 16 + (state().icon || state().text ? 4 : 0);
if(auto& icon = state().icon) _width += icon.width() + 2;
if(auto& text = state().text) _width += pFont::size(self().font(true), text).width();
if(auto parent = _parentWidget()) parent->_updateScrollBars();
}
}
#endif