More progress

Signed-off-by: Slendi <slendi@socopon.com>

src/ImGui.cpp

@@ -0,0 +1,26 @@
+#include "ImGui.hpp"
+
+ImGui::ImGui(std::shared_ptr<TextRenderer> text_renderer)
+    : m_text_renderer(text_renderer)
+{
+}
+
+void ImGui::begin(
+    std::pmr::vector<u32> const input_runes, bool ctrl, bool shift)
+{
+	m_input_runes = input_runes;
+	m_ctrl = ctrl;
+	m_shift = shift;
+}
+
+void ImGui::end() { }
+
+auto ImGui::text_input(std::size_t id, std::pmr::string &str, Rectangle rec,
+    TextInputOptions options) -> std::bitset<2>
+{
+	bool submitted { false };
+	bool changed { false };
+
+	return std::bitset<2> { static_cast<unsigned long long>(
+		(submitted ? 1 : 0) | (changed ? 2 : 0)) };
+}