From f1398b54df5119e6390e49d8244145b23cc575f4 Mon Sep 17 00:00:00 2001
From: Dmitry Marakasov <amdmi3@amdmi3.ru>
Date: Sun, 28 Dec 2014 06:15:46 +0300
Subject: [PATCH] Implement basic ttf rendering, use in example

---
 SDL2pp/Font.cc  | 21 ++++++++++++++++++++
 SDL2pp/Font.hh  | 52 ++++++++++++++++++++++++++++++++++++++++++++-----
 examples/ttf.cc | 23 +++++++++++++++++++---
 3 files changed, 88 insertions(+), 8 deletions(-)

diff --git a/SDL2pp/Font.cc b/SDL2pp/Font.cc
index 95da1ba..cd80d67 100644
--- a/SDL2pp/Font.cc
+++ b/SDL2pp/Font.cc
@@ -60,4 +60,25 @@ TTF_Font* Font::Get() const {
 	return font_;
 }
 
+Surface Font::RenderText_Solid(const std::string& text, SDL_Color fg) {
+	SDL_Surface* surface = TTF_RenderText_Solid(font_, text.c_str(), fg);
+	if (surface == nullptr)
+		throw Exception("TTF_RenderText_Solid failed");
+	return Surface(surface);
+}
+
+Surface Font::RenderText_Shaded(const std::string& text, SDL_Color fg, SDL_Color bg) {
+	SDL_Surface* surface = TTF_RenderText_Shaded(font_, text.c_str(), fg, bg);
+	if (surface == nullptr)
+		throw Exception("TTF_RenderText_Shaded failed");
+	return Surface(surface);
+}
+
+Surface Font::RenderText_Blended(const std::string& text, SDL_Color fg) {
+	SDL_Surface* surface = TTF_RenderText_Blended(font_, text.c_str(), fg);
+	if (surface == nullptr)
+		throw Exception("TTF_RenderText_Blended failed");
+	return Surface(surface);
+}
+
 }
diff --git a/SDL2pp/Font.hh b/SDL2pp/Font.hh
index fd7eeff..b117dcd 100644
--- a/SDL2pp/Font.hh
+++ b/SDL2pp/Font.hh
@@ -26,11 +26,7 @@
 
 #include <SDL2/SDL_ttf.h>
 
-//#include <SDL2pp/Config.hh>
-//#include <SDL2pp/Optional.hh>
-//#include <SDL2pp/Rect.hh>
-
-//struct SDL_PixelFormat;
+#include <SDL2pp/Surface.hh>
 
 namespace SDL2pp {
 
@@ -118,6 +114,52 @@ public:
 	///
 	////////////////////////////////////////////////////////////
 	TTF_Font* Get() const;
+
+    ////////////////////////////////////////////////////////////
+	/// \brief Render LATIN1 text using solid mode
+	///
+	/// \param text LATIN1 string to render
+	/// \param fg Color to render the text in
+	///
+	/// \returns Surface containing rendered text
+	///
+	/// \throws SDL2pp::Exception
+	///
+	/// \see https://www.libsdl.org/projects/SDL_ttf/docs/SDL_ttf.html#SEC43
+	///
+	////////////////////////////////////////////////////////////
+	Surface RenderText_Solid(const std::string& text, SDL_Color fg);
+
+    ////////////////////////////////////////////////////////////
+	/// \brief Render LATIN1 text using shaded mode
+	///
+	/// \param text LATIN1 string to render
+	/// \param fg Color to render the text in
+	/// \param bg Color to render the background box in
+	///
+	/// \returns Surface containing rendered text
+	///
+	/// \throws SDL2pp::Exception
+	///
+	/// \see https://www.libsdl.org/projects/SDL_ttf/docs/SDL_ttf.html#SEC47
+	///
+	////////////////////////////////////////////////////////////
+	Surface RenderText_Shaded(const std::string& text, SDL_Color fg, SDL_Color bg);
+
+    ////////////////////////////////////////////////////////////
+	/// \brief Render LATIN1 text using blended mode
+	///
+	/// \param text LATIN1 string to render
+	/// \param fg Color to render the text in
+	///
+	/// \returns Surface containing rendered text
+	///
+	/// \throws SDL2pp::Exception
+	///
+	/// \see https://www.libsdl.org/projects/SDL_ttf/docs/SDL_ttf.html#SEC51
+	///
+	////////////////////////////////////////////////////////////
+	Surface RenderText_Blended(const std::string& text, SDL_Color fg);
 };
 
 }
diff --git a/examples/ttf.cc b/examples/ttf.cc
index bf8dadd..1947510 100644
--- a/examples/ttf.cc
+++ b/examples/ttf.cc
@@ -28,6 +28,7 @@
 #include <SDL2pp/Font.hh>
 #include <SDL2pp/Window.hh>
 #include <SDL2pp/Renderer.hh>
+#include <SDL2pp/Texture.hh>
 #include <SDL2pp/Exception.hh>
 
 using namespace SDL2pp;
@@ -38,7 +39,15 @@ int Run() {
 	Window window("libSDL2pp demo: font", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_RESIZABLE);
 	Renderer render(window, -1, SDL_RENDERER_ACCELERATED);
 
-	Font font(TESTDATA_DIR "/Vera.ttf", 10);
+	Font font(TESTDATA_DIR "/Vera.ttf", 20);
+
+	Surface solid = font.RenderText_Solid("Hello, world!", SDL_Color({255, 255, 255, 255}));
+	Surface shaded = font.RenderText_Shaded("Hello, world!", SDL_Color({255, 255, 255, 255}), SDL_Color({127, 127, 127, 255}));
+	Surface blended = font.RenderText_Blended("Hello, world!", SDL_Color({255, 255, 255, 255}));
+
+	Texture solid_tex(render, solid);
+	Texture shaded_tex(render, shaded);
+	Texture blended_tex(render, blended);
 
 	while (1) {
 		// Process input
@@ -48,10 +57,18 @@ int Run() {
 				return 0;
 
 		// Clear screen
-		render.SetDrawColor(255, 255, 255);
+		render.SetDrawColor(0, 0, 0);
 		render.Clear();
 
-		// Simple copy
+		// Render 3 strings
+		int h = 0;
+		render.Copy(solid_tex, NullOpt, Rect(0, 0, solid.Get()->w, solid.Get()->h));
+		h += solid.Get()->h;
+
+		render.Copy(shaded_tex, NullOpt, Rect(0, 20, shaded.Get()->w, shaded.Get()->h));
+		h += shaded.Get()->h;
+
+		render.Copy(blended_tex, NullOpt, Rect(0, 40, blended.Get()->w, blended.Get()->h));
 
 		render.Present();