Create a text shader and font utility

scwx-qt/source/scwx/qt/gl/text_shader.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <scwx/qt/util/shader_program.hpp>
+#include <scwx/qt/util/font.hpp>
+
+#include <memory>
+
+#include <boost/gil.hpp>
+#include <glm/glm.hpp>
+
+namespace scwx
+{
+namespace qt
+{
+namespace gl
+{
+
+class TextShaderImpl;
+
+class TextShader : public ShaderProgram
+{
+public:
+   explicit TextShader(OpenGLFunctions& gl);
+   ~TextShader();
+
+   TextShader(const TextShader&) = delete;
+   TextShader& operator=(const TextShader&) = delete;
+
+   TextShader(TextShader&&) noexcept;
+   TextShader& operator=(TextShader&&) noexcept;
+
+   bool Initialize();
+   void RenderText(const std::string&                           text,
+                   float                                        x,
+                   float                                        y,
+                   float                                        scale,
+                   const glm::mat4&                             projection,
+                   const boost::gil::rgba8_pixel_t&             color,
+                   const std::unordered_map<char, util::Glyph>& glyphs);
+   void SetProjection(const glm::mat4& projection);
+   void SetTextColor(const boost::gil::rgba8_pixel_t color);
+
+private:
+   std::unique_ptr<TextShaderImpl> p;
+};
+
+} // namespace gl
+} // namespace qt
+} // namespace scwx