UI: Add AbstractView base class for views, unify reconstruction in there
No user visible changes expected. There's plenty of duplicated code in the grid and the tree view, and I expect this to become more. This starts the process of unifying these parts, which should also make it easier to add new views. Complexity in the view classes is reduced, and some type shenanigans for C compatibility and general view management can be removed, since there is now a common base type. For the start this ports some of the view reconstruction, where the view and its items are compared to the version of itself in the previous redraw, so that state (highlighted, active, renaming, collapsed, ...) can be preserved. Notifier listening is also ported.
This commit is contained in:
parent
4ffee9a48d
commit
c355be6fae
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@ -0,0 +1,47 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup editorui
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*
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* Base for all views (UIs to display data sets), supporting common features.
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* https://wiki.blender.org/wiki/Source/Interface/Views
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*
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* The base class manages reconstruction, most importantly keeping state over reconstructions.
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*/
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#pragma once
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struct wmNotifier;
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namespace blender::ui {
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class AbstractView {
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bool is_reconstructed_ = false;
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public:
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virtual ~AbstractView() = default;
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/** Listen to a notifier, returning true if a redraw is needed. */
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virtual bool listen(const wmNotifier &) const;
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protected:
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AbstractView() = default;
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virtual void update_children_from_old(const AbstractView &old_view) = 0;
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/**
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* Match the view and its items against an earlier version of itself (if any) and copy the old UI
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* state (e.g. collapsed, active, selected, renaming, etc.) to the new one. See
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* #AbstractViewItem.update_from_old().
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* After this, reconstruction is complete (see #is_reconstructed()).
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*/
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void update_from_old(uiBlock &new_block);
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/**
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* Check if the view is fully (re-)constructed. That means, both the build function and
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* #update_from_old() have finished.
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*/
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bool is_reconstructed() const;
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};
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} // namespace blender::ui
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@ -13,6 +13,7 @@
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#include "BLI_map.hh"
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#include "BLI_vector.hh"
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#include "UI_abstract_view.hh"
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#include "UI_resources.h"
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struct bContext;
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@ -111,7 +112,7 @@ struct GridViewStyle {
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int tile_height = 0;
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};
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class AbstractGridView {
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class AbstractGridView : public AbstractView {
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friend class AbstractGridViewItem;
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friend class GridViewBuilder;
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friend class GridViewLayoutBuilder;
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@ -122,7 +123,6 @@ class AbstractGridView {
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* #update_from_old(). */
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Map<StringRef, AbstractGridViewItem *> item_map_;
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GridViewStyle style_;
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bool is_reconstructed_ = false;
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public:
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AbstractGridView();
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@ -131,9 +131,6 @@ class AbstractGridView {
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using ItemIterFn = FunctionRef<void(AbstractGridViewItem &)>;
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void foreach_item(ItemIterFn iter_fn) const;
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/** Listen to a notifier, returning true if a redraw is needed. */
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virtual bool listen(const wmNotifier &) const;
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/**
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* Convenience wrapper constructing the item by forwarding given arguments to the constructor of
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* the type (\a ItemT).
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@ -154,19 +151,8 @@ class AbstractGridView {
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protected:
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virtual void build_items() = 0;
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/**
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* Check if the view is fully (re-)constructed. That means, both #build_items() and
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* #update_from_old() have finished.
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*/
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bool is_reconstructed() const;
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private:
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/**
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* Match the grid-view against an earlier version of itself (if any) and copy the old UI state
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* (e.g. active, selected, renaming, etc.) to the new one. See
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* #AbstractGridViewItem.update_from_old().
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*/
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void update_from_old(uiBlock &new_block);
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void update_children_from_old(const AbstractView &old_view) override;
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AbstractGridViewItem *find_matching_item(const AbstractGridViewItem &item_to_match,
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const AbstractGridView &view_to_search_in) const;
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/**
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@ -72,12 +72,10 @@ typedef struct uiBut uiBut;
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typedef struct uiButExtraOpIcon uiButExtraOpIcon;
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typedef struct uiLayout uiLayout;
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typedef struct uiPopupBlockHandle uiPopupBlockHandle;
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/* C handle for C++ #ui::AbstractTreeView type. */
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typedef struct uiTreeViewHandle uiTreeViewHandle;
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/* C handle for C++ #ui::AbstractView type. */
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typedef struct uiViewHandle uiViewHandle;
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/* C handle for C++ #ui::AbstractTreeViewItem type. */
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typedef struct uiTreeViewItemHandle uiTreeViewItemHandle;
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/* C handle for C++ #ui::AbstractGridView type. */
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typedef struct uiGridViewHandle uiGridViewHandle;
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/* C handle for C++ #ui::AbstractGridViewItem type. */
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typedef struct uiGridViewItemHandle uiGridViewItemHandle;
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@ -3243,15 +3241,6 @@ uiTreeViewItemHandle *UI_block_tree_view_find_item_at(const struct ARegion *regi
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const int xy[2]) ATTR_NONNULL(1, 2);
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uiTreeViewItemHandle *UI_block_tree_view_find_active_item(const struct ARegion *region);
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/**
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* Listen to \a notifier, returning true if the region should redraw.
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*/
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bool UI_tree_view_listen_should_redraw(const uiTreeViewHandle *view, const wmNotifier *notifier);
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/**
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* Listen to \a notifier, returning true if the region should redraw.
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*/
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bool UI_grid_view_listen_should_redraw(const uiGridViewHandle *view, const wmNotifier *notifier);
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#ifdef __cplusplus
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}
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#endif
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@ -19,6 +19,7 @@
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#include "BLI_function_ref.hh"
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#include "BLI_vector.hh"
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#include "UI_abstract_view.hh"
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#include "UI_resources.h"
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struct bContext;
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@ -112,7 +113,7 @@ using TreeViewOrItem = TreeViewItemContainer;
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/** \name Tree-View Base Class
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* \{ */
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class AbstractTreeView : public TreeViewItemContainer {
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class AbstractTreeView : public AbstractView, public TreeViewItemContainer {
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friend class AbstractTreeViewItem;
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friend class TreeViewBuilder;
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@ -122,35 +123,19 @@ class AbstractTreeView : public TreeViewItemContainer {
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*/
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std::unique_ptr<std::array<char, MAX_NAME>> rename_buffer_;
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bool is_reconstructed_ = false;
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public:
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virtual ~AbstractTreeView() = default;
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void foreach_item(ItemIterFn iter_fn, IterOptions options = IterOptions::None) const;
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/** Listen to a notifier, returning true if a redraw is needed. */
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virtual bool listen(const wmNotifier &) const;
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/** Only one item can be renamed at a time. */
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bool is_renaming() const;
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protected:
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virtual void build_tree() = 0;
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/**
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* Check if the tree is fully (re-)constructed. That means, both #build_tree() and
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* #update_from_old() have finished.
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*/
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bool is_reconstructed() const;
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private:
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/**
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* Match the tree-view against an earlier version of itself (if any) and copy the old UI state
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* (e.g. collapsed, active, selected, renaming, etc.) to the new one. See
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* #AbstractTreeViewItem.update_from_old().
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*/
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void update_from_old(uiBlock &new_block);
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void update_children_from_old(const AbstractView &old_view) override;
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static void update_children_from_old_recursive(const TreeViewOrItem &new_items,
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const TreeViewOrItem &old_items);
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static AbstractTreeViewItem *find_matching_child(const AbstractTreeViewItem &lookup_item,
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@ -25,6 +25,7 @@ set(INC
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)
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set(SRC
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abstract_view.cc
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grid_view.cc
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interface.cc
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interface_align.c
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@ -0,0 +1,52 @@
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup edinterface
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*/
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#include "interface_intern.h"
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#include "UI_abstract_view.hh"
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namespace blender::ui {
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/* ---------------------------------------------------------------------- */
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/** \name View Reconstruction
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* \{ */
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bool AbstractView::is_reconstructed() const
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{
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return is_reconstructed_;
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}
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void AbstractView::update_from_old(uiBlock &new_block)
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{
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uiBlock *old_block = new_block.oldblock;
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if (!old_block) {
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is_reconstructed_ = true;
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return;
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}
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const uiViewHandle *old_view_handle = ui_block_view_find_matching_in_old_block(
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&new_block, reinterpret_cast<uiViewHandle *>(this));
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if (old_view_handle == nullptr) {
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/* Initial construction, nothing to update. */
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is_reconstructed_ = true;
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return;
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}
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update_children_from_old(reinterpret_cast<const AbstractView &>(*old_view_handle));
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/* Finished (re-)constructing the tree. */
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is_reconstructed_ = true;
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}
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/** \} */
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bool AbstractView::listen(const wmNotifier & /*notifier*/) const
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{
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/* Nothing by default. */
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return false;
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}
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} // namespace blender::ui
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@ -43,12 +43,6 @@ void AbstractGridView::foreach_item(ItemIterFn iter_fn) const
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}
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}
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bool AbstractGridView::listen(const wmNotifier & /*notifier*/) const
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{
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/* Nothing by default. */
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return false;
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}
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AbstractGridViewItem *AbstractGridView::find_matching_item(
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const AbstractGridViewItem &item_to_match, const AbstractGridView &view_to_search_in) const
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{
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foreach_item([](AbstractGridViewItem &item) { item.change_state_delayed(); });
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}
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void AbstractGridView::update_from_old(uiBlock &new_block)
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void AbstractGridView::update_children_from_old(const AbstractView &old_view)
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{
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uiGridViewHandle *old_view_handle = ui_block_grid_view_find_matching_in_old_block(
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&new_block, reinterpret_cast<uiGridViewHandle *>(this));
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if (!old_view_handle) {
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/* Initial construction, nothing to update. */
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is_reconstructed_ = true;
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return;
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}
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const AbstractGridView &old_grid_view = dynamic_cast<const AbstractGridView &>(old_view);
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AbstractGridView &old_view = reinterpret_cast<AbstractGridView &>(*old_view_handle);
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foreach_item([this, &old_view](AbstractGridViewItem &new_item) {
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const AbstractGridViewItem *matching_old_item = find_matching_item(new_item, old_view);
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foreach_item([this, &old_grid_view](AbstractGridViewItem &new_item) {
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const AbstractGridViewItem *matching_old_item = find_matching_item(new_item, old_grid_view);
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if (!matching_old_item) {
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return;
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}
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new_item.update_from_old(*matching_old_item);
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});
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/* Finished (re-)constructing the tree. */
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is_reconstructed_ = true;
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}
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bool AbstractGridView::is_reconstructed() const
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{
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return is_reconstructed_;
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}
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const GridViewStyle &AbstractGridView::get_style() const
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@ -509,13 +487,6 @@ bool UI_grid_view_item_is_active(const uiGridViewItemHandle *item_handle)
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return item.is_active();
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}
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bool UI_grid_view_listen_should_redraw(const uiGridViewHandle *view_handle,
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const wmNotifier *notifier)
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{
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const AbstractGridView &view = *reinterpret_cast<const AbstractGridView *>(view_handle);
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return view.listen(*notifier);
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}
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bool UI_grid_view_item_matches(const uiGridViewItemHandle *a_handle,
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const uiGridViewItemHandle *b_handle)
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{
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@ -1543,10 +1543,9 @@ void ui_interface_tag_script_reload_queries(void);
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/* interface_view.cc */
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void ui_block_free_views(struct uiBlock *block);
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uiTreeViewHandle *ui_block_tree_view_find_matching_in_old_block(const uiBlock *new_block,
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const uiTreeViewHandle *new_view);
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uiGridViewHandle *ui_block_grid_view_find_matching_in_old_block(
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const uiBlock *new_block, const uiGridViewHandle *new_view_handle);
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uiViewHandle *ui_block_view_find_matching_in_old_block(const uiBlock *new_block,
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const uiViewHandle *new_view);
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uiButTreeRow *ui_block_view_find_treerow_in_old_block(const uiBlock *new_block,
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const uiTreeViewItemHandle *new_item_handle);
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#include "UI_interface.hh"
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#include "UI_abstract_view.hh"
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#include "UI_grid_view.hh"
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#include "UI_tree_view.hh"
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@ -36,43 +37,27 @@ using namespace blender::ui;
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* #std::variant.
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*/
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struct ViewLink : public Link {
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using TreeViewPtr = std::unique_ptr<AbstractTreeView>;
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using GridViewPtr = std::unique_ptr<AbstractGridView>;
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std::string idname;
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/* NOTE: Can't use std::get() on this until minimum macOS deployment target is 10.14. */
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std::variant<TreeViewPtr, GridViewPtr> view;
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std::unique_ptr<AbstractView> view;
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};
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template<class T> constexpr void check_if_valid_view_type()
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{
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static_assert(std::is_same_v<T, AbstractTreeView> || std::is_same_v<T, AbstractGridView>,
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"Unsupported view type");
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}
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template<class T> T *get_view_from_link(ViewLink &link)
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{
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auto *t_uptr = std::get_if<std::unique_ptr<T>>(&link.view);
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return t_uptr ? t_uptr->get() : nullptr;
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}
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template<class T>
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static T *ui_block_add_view_impl(uiBlock &block, StringRef idname, std::unique_ptr<T> view)
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static T *ui_block_add_view_impl(uiBlock &block,
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StringRef idname,
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std::unique_ptr<AbstractView> view)
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{
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check_if_valid_view_type<T>();
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ViewLink *view_link = MEM_new<ViewLink>(__func__);
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BLI_addtail(&block.views, view_link);
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view_link->view = std::move(view);
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view_link->idname = idname;
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return get_view_from_link<T>(*view_link);
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return dynamic_cast<T *>(view_link->view.get());
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}
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AbstractGridView *UI_block_add_view(uiBlock &block,
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StringRef idname,
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std::unique_ptr<AbstractGridView> tree_view)
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std::unique_ptr<AbstractView> tree_view)
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{
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return ui_block_add_view_impl<AbstractGridView>(block, idname, std::move(tree_view));
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}
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ARegion *region = listener_params->region;
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LISTBASE_FOREACH (ViewLink *, view_link, &block->views) {
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if (AbstractGridView *grid_view = get_view_from_link<AbstractGridView>(*view_link)) {
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if (UI_grid_view_listen_should_redraw(reinterpret_cast<uiGridViewHandle *>(grid_view),
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listener_params->notifier)) {
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ED_region_tag_redraw(region);
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}
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}
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else if (AbstractTreeView *tree_view = get_view_from_link<AbstractTreeView>(*view_link)) {
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if (UI_tree_view_listen_should_redraw(reinterpret_cast<uiTreeViewHandle *>(tree_view),
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listener_params->notifier)) {
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ED_region_tag_redraw(region);
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}
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if (view_link->view->listen(*listener_params->notifier)) {
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ED_region_tag_redraw(region);
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}
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}
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}
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return tree_row_but->tree_item;
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}
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template<class T> static StringRef ui_block_view_find_idname(const uiBlock &block, const T &view)
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static StringRef ui_block_view_find_idname(const uiBlock &block, const AbstractView &view)
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{
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check_if_valid_view_type<T>();
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/* First get the idname the of the view we're looking for. */
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LISTBASE_FOREACH (ViewLink *, view_link, &block.views) {
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if (get_view_from_link<T>(*view_link) == &view) {
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if (view_link->view.get() == &view) {
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return view_link->idname;
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}
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}
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@ -146,10 +120,9 @@ template<class T> static StringRef ui_block_view_find_idname(const uiBlock &bloc
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}
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template<class T>
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static T *ui_block_view_find_matching_in_old_block(const uiBlock &new_block, const T &new_view)
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static T *ui_block_view_find_matching_in_old_block_impl(const uiBlock &new_block,
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const T &new_view)
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{
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check_if_valid_view_type<T>();
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uiBlock *old_block = new_block.oldblock;
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if (!old_block) {
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return nullptr;
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@ -162,31 +135,21 @@ static T *ui_block_view_find_matching_in_old_block(const uiBlock &new_block, con
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LISTBASE_FOREACH (ViewLink *, old_view_link, &old_block->views) {
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if (old_view_link->idname == idname) {
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return get_view_from_link<T>(*old_view_link);
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return dynamic_cast<T *>(old_view_link->view.get());
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}
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}
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return nullptr;
|
||||
}
|
||||
|
||||
uiTreeViewHandle *ui_block_tree_view_find_matching_in_old_block(
|
||||
const uiBlock *new_block, const uiTreeViewHandle *new_view_handle)
|
||||
uiViewHandle *ui_block_view_find_matching_in_old_block(const uiBlock *new_block,
|
||||
const uiViewHandle *new_view_handle)
|
||||
{
|
||||
BLI_assert(new_block && new_view_handle);
|
||||
const AbstractTreeView &new_view = reinterpret_cast<const AbstractTreeView &>(*new_view_handle);
|
||||
const AbstractView &new_view = reinterpret_cast<const AbstractView &>(*new_view_handle);
|
||||
|
||||
AbstractTreeView *old_view = ui_block_view_find_matching_in_old_block(*new_block, new_view);
|
||||
return reinterpret_cast<uiTreeViewHandle *>(old_view);
|
||||
}
|
||||
|
||||
uiGridViewHandle *ui_block_grid_view_find_matching_in_old_block(
|
||||
const uiBlock *new_block, const uiGridViewHandle *new_view_handle)
|
||||
{
|
||||
BLI_assert(new_block && new_view_handle);
|
||||
const AbstractGridView &new_view = reinterpret_cast<const AbstractGridView &>(*new_view_handle);
|
||||
|
||||
AbstractGridView *old_view = ui_block_view_find_matching_in_old_block(*new_block, new_view);
|
||||
return reinterpret_cast<uiGridViewHandle *>(old_view);
|
||||
AbstractView *old_view = ui_block_view_find_matching_in_old_block_impl(*new_block, new_view);
|
||||
return reinterpret_cast<uiViewHandle *>(old_view);
|
||||
}
|
||||
|
||||
uiButTreeRow *ui_block_view_find_treerow_in_old_block(const uiBlock *new_block,
|
||||
|
@ -199,9 +162,9 @@ uiButTreeRow *ui_block_view_find_treerow_in_old_block(const uiBlock *new_block,
|
|||
|
||||
const AbstractTreeViewItem &new_item = *reinterpret_cast<const AbstractTreeViewItem *>(
|
||||
new_item_handle);
|
||||
const AbstractTreeView *old_tree_view = ui_block_view_find_matching_in_old_block(
|
||||
const AbstractView *old_view = ui_block_view_find_matching_in_old_block_impl(
|
||||
*new_block, new_item.get_tree_view());
|
||||
if (!old_tree_view) {
|
||||
if (!old_view) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
|
@ -216,7 +179,7 @@ uiButTreeRow *ui_block_view_find_treerow_in_old_block(const uiBlock *new_block,
|
|||
AbstractTreeViewItem &old_item = *reinterpret_cast<AbstractTreeViewItem *>(
|
||||
old_treerow_but->tree_item);
|
||||
/* Check if the row is from the expected tree-view. */
|
||||
if (&old_item.get_tree_view() != old_tree_view) {
|
||||
if (&old_item.get_tree_view() != old_view) {
|
||||
continue;
|
||||
}
|
||||
|
||||
|
|
|
@ -68,45 +68,25 @@ void AbstractTreeView::foreach_item(ItemIterFn iter_fn, IterOptions options) con
|
|||
foreach_item_recursive(iter_fn, options);
|
||||
}
|
||||
|
||||
bool AbstractTreeView::listen(const wmNotifier & /*notifier*/) const
|
||||
{
|
||||
/* Nothing by default. */
|
||||
return false;
|
||||
}
|
||||
|
||||
bool AbstractTreeView::is_renaming() const
|
||||
{
|
||||
return rename_buffer_ != nullptr;
|
||||
}
|
||||
|
||||
void AbstractTreeView::update_from_old(uiBlock &new_block)
|
||||
void AbstractTreeView::update_children_from_old(const AbstractView &old_view)
|
||||
{
|
||||
uiBlock *old_block = new_block.oldblock;
|
||||
if (!old_block) {
|
||||
/* Initial construction, nothing to update. */
|
||||
is_reconstructed_ = true;
|
||||
return;
|
||||
}
|
||||
|
||||
uiTreeViewHandle *old_view_handle = ui_block_tree_view_find_matching_in_old_block(
|
||||
&new_block, reinterpret_cast<uiTreeViewHandle *>(this));
|
||||
if (old_view_handle == nullptr) {
|
||||
is_reconstructed_ = true;
|
||||
return;
|
||||
}
|
||||
|
||||
AbstractTreeView &old_view = reinterpret_cast<AbstractTreeView &>(*old_view_handle);
|
||||
/* TODO: Get rid of const cast. */
|
||||
AbstractTreeView &old_tree_view = const_cast<AbstractTreeView &>(
|
||||
dynamic_cast<const AbstractTreeView &>(old_view));
|
||||
|
||||
/* TODO: Move to AbstractView. */
|
||||
/* Update own persistent data. */
|
||||
/* Keep the rename buffer persistent while renaming! The rename button uses the buffer's
|
||||
* pointer to identify itself over redraws. */
|
||||
rename_buffer_ = std::move(old_view.rename_buffer_);
|
||||
old_view.rename_buffer_ = nullptr;
|
||||
rename_buffer_ = std::move(old_tree_view.rename_buffer_);
|
||||
old_tree_view.rename_buffer_ = nullptr;
|
||||
|
||||
update_children_from_old_recursive(*this, old_view);
|
||||
|
||||
/* Finished (re-)constructing the tree. */
|
||||
is_reconstructed_ = true;
|
||||
update_children_from_old_recursive(*this, old_tree_view);
|
||||
}
|
||||
|
||||
void AbstractTreeView::update_children_from_old_recursive(const TreeViewOrItem &new_items,
|
||||
|
@ -138,11 +118,6 @@ AbstractTreeViewItem *AbstractTreeView::find_matching_child(
|
|||
return nullptr;
|
||||
}
|
||||
|
||||
bool AbstractTreeView::is_reconstructed() const
|
||||
{
|
||||
return is_reconstructed_;
|
||||
}
|
||||
|
||||
void AbstractTreeView::change_state_delayed()
|
||||
{
|
||||
BLI_assert_msg(
|
||||
|
@ -811,13 +786,6 @@ class TreeViewItemAPIWrapper {
|
|||
|
||||
using namespace blender::ui;
|
||||
|
||||
bool UI_tree_view_listen_should_redraw(const uiTreeViewHandle *view_handle,
|
||||
const wmNotifier *notifier)
|
||||
{
|
||||
const AbstractTreeView &view = *reinterpret_cast<const AbstractTreeView *>(view_handle);
|
||||
return view.listen(*notifier);
|
||||
}
|
||||
|
||||
bool UI_tree_view_item_is_active(const uiTreeViewItemHandle *item_handle)
|
||||
{
|
||||
const AbstractTreeViewItem &item = reinterpret_cast<const AbstractTreeViewItem &>(*item_handle);
|
||||
|
|
|
@ -91,6 +91,7 @@ set(SRC
|
|||
../include/ED_uvedit.h
|
||||
../include/ED_view3d.h
|
||||
../include/ED_view3d_offscreen.h
|
||||
../include/UI_abstract_view.hh
|
||||
../include/UI_grid_view.hh
|
||||
../include/UI_icons.h
|
||||
../include/UI_interface.h
|
||||
|
|
Loading…
Reference in New Issue