From f84b25fc8e0619ad24974c4dc520449827f8d193 Mon Sep 17 00:00:00 2001
From: Vegard Storheil Eriksen <zyp@jvnv.net>
Date: Fri, 28 Jan 2011 22:08:37 +0100
Subject: Split out image loading from Texture into Image.

---
 image.cpp   | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 image.h     | 27 +++++++++++++++++++++++++++
 texture.cpp | 26 +++++++++-----------------
 texture.h   |  8 ++++----
 4 files changed, 90 insertions(+), 21 deletions(-)
 create mode 100644 image.cpp
 create mode 100644 image.h

diff --git a/image.cpp b/image.cpp
new file mode 100644
index 0000000..db385db
--- /dev/null
+++ b/image.cpp
@@ -0,0 +1,50 @@
+#include "image.h"
+
+#include "gl.h"
+
+#include "stb_image.h"
+
+Image::Image() {
+	data = 0;
+}
+
+Image::Image(const std::string& filename) {
+	load(filename);
+}
+
+Image::~Image() {
+	if(data) {
+		stbi_image_free(data);
+	}
+}
+
+void Image::load(const std::string& filename) {
+	int w, h, ch;
+	data = stbi_load(filename.c_str(), &w, &h, &ch, 4);
+	
+	width = w;
+	height = h;
+	
+	unsigned int format;
+	if(ch == 4) {
+		format = GL_RGBA;
+	} else {
+		format = GL_RGB;
+	}
+}
+
+unsigned int Image::w() const {
+	return width;
+}
+
+unsigned int Image::h() const {
+	return height;
+}
+
+unsigned int Image::f() const {
+	return format;
+}
+
+const void* Image::d() const {
+	return data;
+}
diff --git a/image.h b/image.h
new file mode 100644
index 0000000..41b0ed2
--- /dev/null
+++ b/image.h
@@ -0,0 +1,27 @@
+#ifndef IMAGE_H
+#define IMAGE_H
+
+#include <stdint.h>
+#include <string>
+
+class Image {
+	public:
+		Image();
+		Image(const std::string& filename);
+		~Image();
+		
+		void load(const std::string& filename);
+		
+		unsigned int w() const;
+		unsigned int h() const;
+		unsigned int f() const;
+		const void* d() const;
+		
+	protected:
+		unsigned int width;
+		unsigned int height;
+		unsigned int format;
+		void* data;
+};
+
+#endif
diff --git a/texture.cpp b/texture.cpp
index ba7d9c7..df84961 100644
--- a/texture.cpp
+++ b/texture.cpp
@@ -1,31 +1,23 @@
 #include <stdexcept>
 #include "texture.h"
-#include "stb_image.h"
 #include "gl.h"
 
 Texture::Texture() {
 	glGenTextures(1, &texture);
 }
 
+Texture::Texture(const Image& image) {
+	glGenTextures(1, &texture);
+	load(image);
+}
+
 Texture::Texture(const std::string& filename) {
 	glGenTextures(1, &texture);
-	load(filename);
+	load(Image(filename));
 }
 
-void Texture::load(const std::string& filename) {
-	int w, h, ch;
-	uint8_t* data = stbi_load(filename.c_str(), &w, &h, &ch, 4);
-	
-	unsigned int format;
-	if(ch == 4) {
-		format = GL_RGBA;
-	} else {
-		format = GL_RGB;
-	}
-	
-	build(data, format, w, h);
-	
-	stbi_image_free(data);
+void Texture::load(const Image& image) {
+	build(image.d(), image.f(), image.w(), image.h());
 }
 
 void Texture::bind() const {
@@ -44,7 +36,7 @@ unsigned int Texture::h() const {
 	return height;
 }
 
-void Texture::build(void* data, unsigned int format, unsigned int w, unsigned int h) {
+void Texture::build(const void* data, unsigned int format, unsigned int w, unsigned int h) {
 	if(!data) {
 		throw(std::runtime_error("No texture data"));
 	}
diff --git a/texture.h b/texture.h
index 9fea06f..e63feb2 100644
--- a/texture.h
+++ b/texture.h
@@ -1,22 +1,22 @@
 #ifndef _TEXTURE_H_
 #define _TEXTURE_H_
 
-#include <stdint.h>
-#include <string>
+#include "image.h"
 
 class Texture {
 	public:
 		Texture();
+		Texture(const Image& image);
 		Texture(const std::string& filename);
 		
-		void load(const std::string& filename);
+		void load(const Image& image);
 		
 		void bind() const;
 		unsigned int tex() const;
 		unsigned int w() const;
 		unsigned int h() const;
 	protected:
-		void build(void* data, unsigned int format, unsigned int w, unsigned int h);
+		void build(const void* data, unsigned int format, unsigned int w, unsigned int h);
 		unsigned int width;
 		unsigned int height;
 		unsigned int texture;
-- 
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