Move struct Palette into its own file (#1850)

src/CMakeLists.txt

@@ -92,6 +92,7 @@ set(rgbgfx_src
     "gfx/pal_packing.cpp"
     "gfx/pal_sorting.cpp"
     "gfx/pal_spec.cpp"
+    "gfx/palette.cpp"
     "gfx/png.cpp"
     "gfx/process.cpp"
     "gfx/reverse.cpp"

src/gfx/main.cpp

@@ -2,7 +2,6 @@
 
 #include "gfx/main.hpp"
 
-#include <algorithm>
 #include <errno.h>
 #include <inttypes.h>
 #include <ios>
@@ -848,47 +847,3 @@ int main(int argc, char *argv[]) {
 	requireZeroErrors();
 	return 0;
 }
-
-void Palette::addColor(uint16_t color) {
-	for (size_t i = 0; true; ++i) {
-		assume(i < colors.size()); // The packing should guarantee this
-		if (colors[i] == color) {  // The color is already present
-			break;
-		} else if (colors[i] == UINT16_MAX) { // Empty slot
-			colors[i] = color;
-			break;
-		}
-	}
-}
-
-// Returns the ID of the color in the palette, or `size()` if the color is not in
-uint8_t Palette::indexOf(uint16_t color) const {
-	return color == Rgba::transparent
-	           ? 0
-	           : std::find(begin(), colors.end(), color) - begin() + options.hasTransparentPixels;
-}
-
-auto Palette::begin() -> decltype(colors)::iterator {
-	// Skip the first slot if reserved for transparency
-	return colors.begin() + options.hasTransparentPixels;
-}
-
-auto Palette::end() -> decltype(colors)::iterator {
-	// Return an iterator pointing past the last non-empty element.
-	// Since the palette may contain gaps, we must scan from the end.
-	return std::find_if(RRANGE(colors), [](uint16_t c) { return c != UINT16_MAX; }).base();
-}
-
-auto Palette::begin() const -> decltype(colors)::const_iterator {
-	// Same as the non-const begin().
-	return colors.begin() + options.hasTransparentPixels;
-}
-
-auto Palette::end() const -> decltype(colors)::const_iterator {
-	// Same as the non-const end().
-	return std::find_if(RRANGE(colors), [](uint16_t c) { return c != UINT16_MAX; }).base();
-}
-
-uint8_t Palette::size() const {
-	return end() - colors.begin();
-}

src/gfx/pal_sorting.cpp

@@ -11,7 +11,7 @@
 #include "helpers.hpp"
 #include "verbosity.hpp"
 
-#include "gfx/main.hpp"
+#include "gfx/palette.hpp"
 #include "gfx/rgba.hpp"
 
 void sortIndexed(std::vector<Palette> &palettes, std::vector<Rgba> const &embPal) {

src/gfx/palette.cpp

@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: MIT
+
+#include "gfx/palette.hpp"
+
+#include <algorithm>
+#include <stdint.h>
+
+#include "helpers.hpp"
+
+#include "gfx/main.hpp"
+#include "gfx/rgba.hpp"
+
+void Palette::addColor(uint16_t color) {
+	for (size_t i = 0; true; ++i) {
+		assume(i < colors.size()); // The packing should guarantee this
+		if (colors[i] == color) {  // The color is already present
+			break;
+		} else if (colors[i] == UINT16_MAX) { // Empty slot
+			colors[i] = color;
+			break;
+		}
+	}
+}
+
+// Returns the ID of the color in the palette, or `size()` if the color is not in
+uint8_t Palette::indexOf(uint16_t color) const {
+	return color == Rgba::transparent
+	           ? 0
+	           : std::find(begin(), colors.end(), color) - begin() + options.hasTransparentPixels;
+}
+
+auto Palette::begin() -> decltype(colors)::iterator {
+	// Skip the first slot if reserved for transparency
+	return colors.begin() + options.hasTransparentPixels;
+}
+
+auto Palette::end() -> decltype(colors)::iterator {
+	// Return an iterator pointing past the last non-empty element.
+	// Since the palette may contain gaps, we must scan from the end.
+	return std::find_if(RRANGE(colors), [](uint16_t c) { return c != UINT16_MAX; }).base();
+}
+
+auto Palette::begin() const -> decltype(colors)::const_iterator {
+	// Same as the non-const begin().
+	return colors.begin() + options.hasTransparentPixels;
+}
+
+auto Palette::end() const -> decltype(colors)::const_iterator {
+	// Same as the non-const end().
+	return std::find_if(RRANGE(colors), [](uint16_t c) { return c != UINT16_MAX; }).base();
+}
+
+uint8_t Palette::size() const {
+	return end() - colors.begin();
+}

src/gfx/process.cpp

@@ -26,9 +26,11 @@
 #include "verbosity.hpp"
 
 #include "gfx/color_set.hpp"
+#include "gfx/flip.hpp"
 #include "gfx/main.hpp"
 #include "gfx/pal_packing.hpp"
 #include "gfx/pal_sorting.hpp"
+#include "gfx/palette.hpp"
 #include "gfx/png.hpp"
 #include "gfx/rgba.hpp"
 #include "gfx/warning.hpp"

src/gfx/reverse.cpp

@@ -23,6 +23,7 @@
 #include "helpers.hpp" // assume
 #include "verbosity.hpp"
 
+#include "gfx/flip.hpp"
 #include "gfx/main.hpp"
 #include "gfx/rgba.hpp"
 #include "gfx/warning.hpp"