From 46ad5ea5fe4877f1393acfee4d79fc0a48c2a175 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Thu, 20 Mar 2014 22:07:47 +0100
Subject: [PATCH] Tiled wallpaper replicated all over.

---
 src/tiledwallpaper.cpp | 54 +++++++++++++++++++++++++++++++++++++++++-
 src/tiledwallpaper.hpp | 15 ++++++++++--
 2 files changed, 66 insertions(+), 3 deletions(-)

diff --git a/src/tiledwallpaper.cpp b/src/tiledwallpaper.cpp
index c9ebea8..cd92b3b 100644
--- a/src/tiledwallpaper.cpp
+++ b/src/tiledwallpaper.cpp
@@ -20,12 +20,26 @@
 #include "tiledwallpaper.hpp"
 #include "texture.hpp"
 #include "sdlmain.hpp"
+#include "sizeratio.hpp"
+#include <cassert>
 
 namespace cloonel {
+	namespace {
+		float2 CountTilesInScreen ( const ushort2& parScreenSize, const ushort2& parTileSize ) __attribute__((pure));
+
+		///----------------------------------------------------------------------
+		///----------------------------------------------------------------------
+		float2 CountTilesInScreen (const ushort2& parScreenSize, const ushort2& parTileSize) {
+			assert(ushort2(0) != parTileSize);
+			return static_cast<float2>((parTileSize - 1 + parScreenSize) / parTileSize);
+		}
+	} //unnamed namespace
+
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	TiledWallpaper::TiledWallpaper (const std::string&& parPath, SDLMain* parMain) :
 		Drawable(128.0f, 128.0f),
+		m_tileCount(parMain, ushort2(128)),
 		m_tile(new Texture(parPath, parMain, false))
 	{
 	}
@@ -50,6 +64,44 @@ namespace cloonel {
 	///--------------------------------------------------------------------------
 	///--------------------------------------------------------------------------
 	void TiledWallpaper::Draw() const {
-		m_tile->Render(float2(0.0f), float2(1.0f));
+		const ushort2 grid(static_cast<ushort2>(m_tileCount.tileCount()));
+		const float2& sz = m_tileCount.tileSize();
+
+		float2 dest;
+		dest.y() = 0.0f;
+		for (uint16_t y = 0; y < grid.y(); ++y) {
+			dest.x() = 0.0f;
+			for (uint16_t x = 0; x < grid.x(); ++x) {
+				m_tile->Render(dest, sz, float2(1.0f));
+				dest.x() += sz.x();
+			}
+			dest.y() += sz.y();
+		}
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	TiledWallpaper::TileCountNotifiable::TileCountNotifiable (SDLMain* parMain, const ushort2& parTileSize) :
+		BaseClass(parMain),
+		m_tileCount(CountTilesInScreen(parMain->WidthHeight(), parTileSize)),
+		m_tileSize(static_cast<float2>(parTileSize))
+	{
+		assert(parMain);
+		assert(ushort2(0) != parTileSize);
+	}
+
+	///--------------------------------------------------------------------------
+	///--------------------------------------------------------------------------
+	void TiledWallpaper::TileCountNotifiable::NotifyResChanged (const SizeRatio& parSize) {
+		BaseClass::NotifyResChanged(parSize);
+		m_tileCount = CountTilesInScreen(static_cast<ushort2>(parSize.Resolution()), static_cast<ushort2>(m_tileSize));
+#if !defined(NDEBUG)
+		{
+			const ushort2 tileSize(static_cast<ushort2>(m_tileSize));
+			const ushort2 screenRes(static_cast<ushort2>(parSize.Resolution()));
+			const ushort2 tileCount(static_cast<ushort2>(m_tileCount));
+			assert(tileCount * tileSize < screenRes + tileSize);
+		}
+#endif
 	}
 } //namespace cloonel
diff --git a/src/tiledwallpaper.hpp b/src/tiledwallpaper.hpp
index a24638e..a61b8d0 100644
--- a/src/tiledwallpaper.hpp
+++ b/src/tiledwallpaper.hpp
@@ -38,12 +38,23 @@ namespace cloonel {
 		virtual void Draw ( void ) const;
 
 	private:
-		class TileCountNotifiable : public SizeNotifiable<regbehaviuors::DontRegister> {
+		class TileCountNotifiable : public SizeNotifiable<regbehaviuors::AutoRegister> {
+			typedef SizeNotifiable<regbehaviuors::AutoRegister> BaseClass;
+		public:
+			TileCountNotifiable ( SDLMain* parMain, const ushort2& parTileSize );
+			virtual ~TileCountNotifiable ( void ) noexcept = default;
+
+			virtual void NotifyResChanged ( const SizeRatio& parSize );
+			const float2& tileCount ( void ) const noexcept { return m_tileCount; }
+			const float2& tileSize ( void ) const noexcept { return m_tileSize; }
+
+		private:
+			float2 m_tileCount;
+			const float2 m_tileSize;
 		};
 
 		TileCountNotifiable m_tileCount;
 		const std::unique_ptr<Texture> m_tile;
-		size_t m_tileCountID;
 	};
 } //namespace cloonel