mirror of
https://github.com/scummvm/scummvm.git
synced 2026-05-21 05:40:43 +00:00
Cameron Cawley
111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef GRAPHICS_DIRTYRECTS_H
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#define GRAPHICS_DIRTYRECTS_H
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#include "common/list.h"
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#include "common/rect.h"
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namespace Graphics {
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/**
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* @defgroup graphics_dirtyrects DirtyRects
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* @ingroup graphics
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*
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* @brief DirtyRectList class for tracking dirty rectangles.
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*
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* @{
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*/
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/**
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* This class keeps track of any areas of a surface that are updated
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* by drawing calls.
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*/
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class DirtyRectList {
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public:
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typedef Common::List<Common::Rect>::const_iterator const_iterator; /*!< Const-qualified list iterator. */
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protected:
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/**
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* List of affected areas of the screen
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*/
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Common::List<Common::Rect> _dirtyRects;
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protected:
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/**
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* Returns the union of two dirty area rectangles
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*/
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bool unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2);
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public:
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/**
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* Merges together overlapping dirty areas of the screen
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*/
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void merge();
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/**
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* Returns true if there are no pending screen updates (dirty areas)
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*/
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bool empty() const { return _dirtyRects.empty(); }
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/**
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* Clear the current dirty rects list
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*/
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void clear() { _dirtyRects.clear(); }
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/**
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* Adds a rectangle to the list of modified areas of the screen during the
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* current frame
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*/
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template<class... TArgs>
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void emplace_back(TArgs &&...args) { _dirtyRects.emplace_back(Common::forward<TArgs>(args)...); }
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/**
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* Adds a rectangle to the list of modified areas of the screen during the
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* current frame
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*/
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void push_back(const Common::Rect &r) { _dirtyRects.push_back(r); }
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/**
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* Adds a rectangle to the list of modified areas of the screen during the
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* current frame
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*/
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void push_back(Common::Rect &&r) { _dirtyRects.push_back(Common::move(r)); }
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/** Return a const iterator to the start of the list.
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* This can be used, for example, to iterate from the first element
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* of the list to the last element of the list.
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*/
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const_iterator begin() const {
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return _dirtyRects.begin();
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}
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/** Return a const iterator to the end of the list. */
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const_iterator end() const {
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return _dirtyRects.end();
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}
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};
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/** @} */
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} // End of namespace Graphics
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#endif
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