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86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
// Aseprite Document Library
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// Copyright (c) 2021 Igara Studio S.A.
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// Copyright (c) 2001-2017 David Capello
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//
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// This file is released under the terms of the MIT license.
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// Read LICENSE.txt for more information.
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#ifndef DOC_REMAP_H_INCLUDED
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#define DOC_REMAP_H_INCLUDED
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#pragma once
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#include "base/debug.h"
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#include <vector>
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namespace doc {
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class Palette;
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class PalettePicks;
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class Remap {
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public:
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constexpr static const int kUnused = -1;
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Remap(int entries = 1) : m_map(entries, 0) { }
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int size() const {
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return (int)m_map.size();
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}
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// Maps input "fromIndex" value, to "toIndex" output.
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void map(int fromIndex, int toIndex) {
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ASSERT(fromIndex >= 0 && fromIndex < size());
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ASSERT(toIndex >= 0 && toIndex < size());
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m_map[fromIndex] = toIndex;
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}
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void unused(int i) {
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ASSERT(i >= 0 && i < size());
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m_map[i] = kUnused;
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}
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int operator[](int index) const {
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//ASSERT(index >= 0 && index < size());
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if (index >= 0 && index < size())
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return m_map[index];
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else
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return index; // No remap
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}
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void merge(const Remap& other);
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Remap invert() const;
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int getMemSize() const {
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return sizeof(*this) + sizeof(int)*size();
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}
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// Returns true if the remap can be safely used in 8-bit images.
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bool isFor8bit() const;
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// Returns true if the remap can be inverted. Remaps can be
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// inverted when each input is mapped to one output (e.g. two
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// inputs are not mapped to the same output). This kind of remaps
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// are really easy to undone: You can store the inverted remap as
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// undo data, without saving all images' pixels.
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bool isInvertible(const PalettePicks& usedEntries) const;
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private:
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std::vector<int> m_map;
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};
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// Creates a map to move a set of selected entries before the given
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// index "beforeIndex".
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Remap create_remap_to_move_picks(const PalettePicks& picks, int beforeIndex);
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Remap create_remap_to_expand_palette(int size, int count, int beforeIndex);
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Remap create_remap_to_change_palette(
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const Palette* oldPalette, const Palette* newPalette,
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const int oldMaskIndex,
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const bool remapMaskIndex);
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} // namespace doc
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#endif
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