Adding upstream version 1.3+ds.upstream/1.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 65 insertions, 0 deletions

diff --git a/src/color/CMakeLists.txt b/src/color/CMakeLists.txt
new file mode 100644
index 0000000..36b14ad
--- /dev/null
+++ b/src/color/CMakeLists.txt
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+set(color_SRC
+	color-conv.cpp
+
+	# -------
+	# Headers
+	color-conv.h
+)
+
+add_inkscape_source("${color_SRC}")
diff --git a/src/color/color-conv.cpp b/src/color/color-conv.cpp
new file mode 100644
index 0000000..8ce3bcb
--- /dev/null
+++ b/src/color/color-conv.cpp
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <iomanip>
+#include <sstream>
+
+#include "color-conv.h"
+
+namespace Inkscape {
+namespace Util {
+
+std::string rgba_color_to_string(unsigned int rgba) {
+    std::ostringstream ost;
+    ost << "#" << std::setfill ('0') << std::setw(8) << std::hex << rgba;
+    return ost.str();
+}
+
+std::optional<unsigned int> string_to_rgba_color(const char* str) {
+    if (!str || *str != '#') {
+        return std::optional<unsigned int>();
+    }
+    try {
+        return static_cast<unsigned int>(std::stoul(str + 1, nullptr, 16));
+    }
+    catch (...) {
+        return std::optional<unsigned int>();
+    }
+}
+
+}
+}
\ No newline at end of file
diff --git a/src/color/color-conv.h b/src/color/color-conv.h
new file mode 100644
index 0000000..0b87704
--- /dev/null
+++ b/src/color/color-conv.h
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2022 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef INKSCAPE_UTIL_COLOR_CONV_H
+#define INKSCAPE_UTIL_COLOR_CONV_H
+
+#include <optional>
+#include <string>
+
+namespace Inkscape {
+namespace Util {
+
+// Convert RGBA color to '#rrggbbaa' hex string
+std::string rgba_color_to_string(unsigned int rgba);
+
+// Parse hex string '#rrgbbaa' and return RGBA color
+std::optional<unsigned int> string_to_rgba_color(const char* str);
+
+} } // namespace
+
+#endif