93865b2495
A SoNode* is not necessarily a SoFCSelectionRoot*, and when this assumption breaks the code causes UB (the comment related to one of the chunks explicitly says that it is safe, but unfortunately it is not). Instead of storing `SoFCSelectionRoot*` and blindly cast a generic `SoNode*` to that, we can do the opposite. In this way it is obviously necessary to use a dynamic cast when trying to reach for `SoFCSelectionRoot` specific features, but in this way the abstraction should be sound. Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>
142 lines
4.7 KiB
C++
142 lines
4.7 KiB
C++
/****************************************************************************
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* Copyright (c) 2018 Zheng Lei (realthunder) <realthunder.dev@gmail.com> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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****************************************************************************/
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#ifndef GUI_SOFCSELECTIONCONTEXT_H
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#define GUI_SOFCSELECTIONCONTEXT_H
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#include <climits>
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#include <map>
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#include <memory>
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#include <set>
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#include <vector>
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#include <Inventor/SbColor.h>
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#include <App/Material.h>
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class SoState;
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namespace Gui {
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class SoFCSelectionRoot;
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struct SoFCSelectionContextBase;
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using SoFCSelectionContextBasePtr = std::shared_ptr<SoFCSelectionContextBase>;
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struct GuiExport SoFCSelectionContextBase {
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virtual ~SoFCSelectionContextBase() = default;
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using MergeFunc = int (int status,
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SoFCSelectionContextBasePtr &output,
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SoFCSelectionContextBasePtr input,
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SoNode *node);
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};
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struct SoFCSelectionContext;
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using SoFCSelectionContextPtr = std::shared_ptr<SoFCSelectionContext>;
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struct GuiExport SoFCSelectionContext : SoFCSelectionContextBase
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{
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int highlightIndex = -1;
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std::set<int> selectionIndex;
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SbColor selectionColor;
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SbColor highlightColor;
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std::shared_ptr<int> counter;
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~SoFCSelectionContext() override;
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bool isSelected() const {
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return !selectionIndex.empty();
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}
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void selectAll() {
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selectionIndex.clear();
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selectionIndex.insert(-1);
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}
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bool isSelectAll() const{
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return !selectionIndex.empty() && *selectionIndex.begin()<0;
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}
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bool isHighlighted() const {
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return highlightIndex>=0;
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}
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bool isHighlightAll() const{
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return highlightIndex==INT_MAX && (selectionIndex.empty() || isSelectAll());
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}
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void highlightAll() {
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highlightIndex = INT_MAX;
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}
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void removeHighlight() {
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highlightIndex = -1;
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}
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bool removeIndex(int index);
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bool checkGlobal(SoFCSelectionContextPtr ctx);
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virtual SoFCSelectionContextBasePtr copy() {
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return std::make_shared<SoFCSelectionContext>(*this);
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}
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static MergeFunc merge;
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};
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struct SoFCSelectionContextEx;
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using SoFCSelectionContextExPtr = std::shared_ptr<SoFCSelectionContextEx>;
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struct GuiExport SoFCSelectionContextEx : SoFCSelectionContext
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{
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std::map<int,App::Color> colors;
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float trans0 = 0.0;
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bool setColors(const std::map<std::string,App::Color> &colors, const std::string &element);
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uint32_t packColor(const App::Color &c, bool &hasTransparency);
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bool applyColor(int idx, std::vector<uint32_t> &packedColors, bool &hasTransparency);
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bool isSingleColor(uint32_t &color, bool &hasTransparency);
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SoFCSelectionContextBasePtr copy() override {
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return std::make_shared<SoFCSelectionContextEx>(*this);
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}
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static MergeFunc merge;
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};
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class SoHighlightElementAction;
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class SoSelectionElementAction;
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class GuiExport SoFCSelectionCounter {
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public:
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SoFCSelectionCounter();
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virtual ~SoFCSelectionCounter();
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bool checkRenderCache(SoState *state);
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void checkAction(SoHighlightElementAction *hlaction);
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void checkAction(SoSelectionElementAction *selaction, SoFCSelectionContextPtr ctx);
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protected:
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std::shared_ptr<int> counter;
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bool hasSelection{false};
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bool hasPreselection{false};
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static int cachingMode;
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};
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}
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#endif //GUI_SOFCSELECTIONCONTEXT_H
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