pixel_clipboard.h

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#ifndef YAZE_APP_EDITOR_GRAPHICS_PIXEL_CLIPBOARD_H
#define YAZE_APP_EDITOR_GRAPHICS_PIXEL_CLIPBOARD_H
 
#include <array>
#include <cstdint>
#include <string>
#include <vector>
 
#include "absl/status/statusor.h"
 
namespace yaze::editor {
 
using SheetColors = std::array<std::array<uint8_t, 3>, 8>;
 
absl::StatusOr<std::vector<uint8_t>> EncodeClipboardPng(
    const std::vector<uint8_t>& indices, int width, int height,
    const SheetColors& colors);
 
struct ClipboardPaste {
  int width = 0;
  int height = 0;
  std::vector<uint8_t> indices;  // 0-7, row-major
  int kept = 0;         // indexed pixels kept as they were (indices 0-7)
  int exact = 0;        // pixels whose color matched a sheet color exactly
  int remapped = 0;     // pixels given the nearest sheet color
  int transparent = 0;  // pixels with alpha below 128, mapped to 0
  int above_depth = 0;  // indexed pixels that used an index above 7
};
 
absl::StatusOr<ClipboardPaste> MapClipboardPng(
    const std::vector<uint8_t>& png_bytes, const SheetColors& colors,
    int max_width = 128, int max_height = 32);
 
std::string DescribeClipboardPaste(const ClipboardPaste& paste);
 
}  // namespace yaze::editor
 
#endif  // YAZE_APP_EDITOR_GRAPHICS_PIXEL_CLIPBOARD_H