Initial commit, read more

This commit includes:

* Button
* TextLine
* TextBox
* TextField

It also includes these dependencies:

* Image
* BoundingBox

.gitignore

@@ -0,0 +1,24 @@
+#Editor generated files
+*.sln
+*.vcproj
+*.suo
+*.ncb
+*.user
+
+#Directories
+Release/
+Debug/
+Out/
+release/
+debug/
+out/
+
+#Project generated files
+*.db
+*.o
+*.a
+*.exe
+
+#Shell files
+*.bat
+*.sh

README.md

@@ -0,0 +1,15 @@
+## Outline
+
+TurtleGUI requires SDL2, SDL_image and SDL_ttf. It also requires Image and BoundingBox from [Tortuga](https://github.com/Ratstail91/Tortuga) which have been included.
+
+## Copyright
+
+Copyright (c) 2013-2016 Kayne Ruse
+
+This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.

bounding_box.hpp

@@ -0,0 +1,65 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include <type_traits>
+#include <algorithm>
+
+class BoundingBox {
+public:
+	//This is explicitly a POD
+	int x, y;
+	int w, h;
+
+	BoundingBox() = default;
+	BoundingBox(int i, int j): x(i), y(j), w(0), h(0) {};
+	BoundingBox(int i, int j, int k, int l): x(i), y(j), w(k), h(l) {};
+	~BoundingBox() = default;
+	BoundingBox& operator=(BoundingBox const&) = default;
+
+	int Size() {
+		return std::max(w*h,0);
+	}
+
+	bool CheckOverlap(BoundingBox rhs) {
+		return !(
+			x >= rhs.x + rhs.w ||
+			y >= rhs.y + rhs.h ||
+			rhs.x >= x + w ||
+			rhs.y >= y + h);
+	}
+
+	BoundingBox CalcOverlap(BoundingBox rhs) {
+		if (!CheckOverlap(rhs)) {
+			return {0, 0, 0, 0};
+		}
+		BoundingBox ret;
+		ret.x = std::max(x, rhs.x);
+		ret.y = std::max(y, rhs.y);
+		ret.w = std::min(x+w, rhs.x+rhs.w) - ret.x;
+		ret.h = std::min(y+h, rhs.y+rhs.h) - ret.y;
+		return ret;
+	}
+};
+
+//This is explicitly a POD
+static_assert(std::is_pod<BoundingBox>::value, "BoundingBox is not a POD");

button.cpp

@@ -0,0 +1,167 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "button.hpp"
+
+#include "render_text_texture.hpp"
+
+#include <stdexcept>
+
+void Button::DrawTo(SDL_Renderer* renderer) {
+	image.SetClipY(image.GetClipH() * state);
+	image.DrawTo(renderer, posX, posY);
+}
+
+void Button::SetBackgroundTexture(SDL_Renderer* renderer, SDL_Texture* texture) {
+	//copy the given texture
+	image.Free();
+
+	//a null texture can simply free the image
+	if (!texture) {
+		return;
+	}
+
+	//get the w & h, & create
+	int w = 0, h = 0;
+	SDL_QueryTexture(texture, nullptr, nullptr, &w, &h);
+	image.Create(renderer, w, h);
+
+	//copy
+	SDL_SetRenderTarget(renderer, image.GetTexture());
+	SDL_RenderCopy(renderer, texture, nullptr, nullptr);
+	SDL_SetRenderTarget(renderer, nullptr);
+
+	//prune
+	image.SetClipH(image.GetClipH() / 3);
+}
+
+void Button::SetText(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string s) {
+	//convert to texture
+	SDL_Texture* text = renderTextTexture(renderer, font, color, s);
+
+	//get the dimensions & rects
+	int x, y, w, h;
+	SDL_QueryTexture(text, nullptr, nullptr, &w, &h);
+	x = (image.GetClipW() - w) / 2;
+	y = (image.GetClipH() - h) / 2;
+	SDL_Rect src = {0, 0, w, h};
+	SDL_Rect dst;
+
+	//draw the text to the background
+	SDL_SetRenderTarget(renderer, image.GetTexture());
+
+	for (int i = 0; i < 3; i++) {
+		dst = {x, y + image.GetClipH() * i, w, h};
+		SDL_RenderCopy(renderer, text, &src, &dst);
+	}
+
+	SDL_SetRenderTarget(renderer, nullptr);
+
+	//free the texture
+	SDL_DestroyTexture(text);
+}
+
+Button::State Button::MouseMotion(SDL_MouseMotionEvent const& event) {
+	//if out of bounds, exit
+	if (!CheckBounds(event.x, event.y)) {
+		return state = State::IDLE;
+	}
+
+	//if in bounds, check button
+	if (event.state & SDL_BUTTON_LMASK && state == State::PRESSED) {
+		//stay pressed
+//		state = State::PRESSED;
+	}
+	else {
+		state = State::HOVER;
+	}
+
+	return state;
+}
+
+Button::State Button::MouseButtonDown(SDL_MouseButtonEvent const& event) {
+	//if out of bounds, exit
+	if (!CheckBounds(event.x, event.y)) {
+		return state = State::IDLE;
+	}
+
+	//if in bounds, check button
+	if (event.button == SDL_BUTTON_LEFT) {
+		return state = State::PRESSED;
+	}
+
+	//NOTE: if not left button down, ignore
+	return State::HOVER;
+}
+
+Button::State Button::MouseButtonUp(SDL_MouseButtonEvent const& event) {
+	//if out of bounds, exit
+	if (!CheckBounds(event.x, event.y)) {
+		return state = State::IDLE;
+	}
+
+	//if not left button up, ignore
+	if (event.button != SDL_BUTTON_LEFT) {
+		return state;
+	}
+
+	//if in bounds and left button up, send release signal
+	if (state == State::PRESSED) {
+		state = State::HOVER;
+		return State::RELEASED;
+	}
+
+	return state;
+}
+
+void Button::SetState(State s) {
+	state = s;
+}
+
+Button::State Button::GetState() {
+	return state;
+}
+
+int Button::SetX(int i) {
+	return posX = i;
+}
+
+int Button::SetY(int i) {
+	return posY = i;
+}
+
+int Button::GetX() const {
+	return posX;
+}
+
+int Button::GetY() const {
+	return posY;
+}
+
+bool Button::CheckBounds(int x, int y) {
+	//return if true (x, y) is within bounds, otherwise return false
+	return !(
+		x < posX ||
+		y < posY ||
+		x > posX + image.GetClipW() ||
+		y > posY + image.GetClipH()
+		);
+}

button.hpp

@@ -0,0 +1,67 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "image.hpp"
+
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+
+class Button {
+public:
+	enum State {
+		IDLE = 0, HOVER = 1, PRESSED = 2, RELEASED = 3
+	};
+
+	//methods
+	Button() = default;
+	~Button() = default;
+
+	void DrawTo(SDL_Renderer*);
+
+	//setup
+	void SetBackgroundTexture(SDL_Renderer*, SDL_Texture*);
+	void SetText(SDL_Renderer*, TTF_Font*, SDL_Color, std::string);
+
+	//capture input
+	State MouseMotion(SDL_MouseMotionEvent const&);
+	State MouseButtonDown(SDL_MouseButtonEvent const&);
+	State MouseButtonUp(SDL_MouseButtonEvent const&);
+
+	//states
+	void SetState(State); //TODO: idle, busy or disabled
+	State GetState();
+
+	//accessors & mutators
+	int SetX(int x);
+	int SetY(int y);
+	int GetX() const;
+	int GetY() const;
+
+protected:
+	bool CheckBounds(int x, int y);
+
+	Image image;
+	State state = State::IDLE;
+	int posX = 0, posY = 0;
+};

image.cpp

@@ -0,0 +1,211 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "image.hpp"
+
+#include "SDL2/SDL_image.h"
+
+#include <sstream>
+#include <stdexcept>
+
+Image& Image::operator=(Image const& rhs) {
+	//don't screw yourself
+	if (this == &rhs) {
+		return *this;
+	}
+
+	Free();
+
+	//Copy the other Image's stuff
+	texture = rhs.texture;
+	clip = rhs.clip;
+	local = false;
+}
+
+Image& Image::operator=(Image&& rhs) {
+	//don't screw yourself
+	if (this == &rhs) {
+		return *this;
+	}
+
+	Free();
+
+	//Steal the other Image's stuff
+	texture = rhs.texture;
+	clip = rhs.clip;
+	local = rhs.local;
+
+	rhs.texture = nullptr;
+	rhs.clip = {0, 0, 0, 0};
+	rhs.local = false;
+}
+
+SDL_Texture* Image::Load(SDL_Renderer* renderer, std::string fname) {
+	Free();
+
+	//load the file into a surface
+	SDL_Surface* surface = IMG_Load(fname.c_str());
+	if (!surface) {
+		std::ostringstream msg;
+		msg << "Failed to load an image file: " << fname;
+		msg << "; " << IMG_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+
+	//create a texture from this surface
+	texture = SDL_CreateTextureFromSurface(renderer, surface);
+	if (!texture) {
+		std::ostringstream msg;
+		msg << "Failed to convert a newly loaded image file: " << fname;
+		msg << "; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+
+	//set the metadata
+	clip.x = 0;
+	clip.y = 0;
+	if (SDL_QueryTexture(texture, nullptr, nullptr, &clip.w, &clip.h)) {
+		std::ostringstream msg;
+		msg << "Failed to record metadata for a newly loaded image file: " << fname;
+		msg << "; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+	local = true;
+
+	//free the surface & return
+	SDL_FreeSurface(surface);
+	return texture;
+}
+
+SDL_Texture* Image::Create(SDL_Renderer* renderer, Uint16 w, Uint16 h, SDL_Color blank) {
+	Free();
+
+	//make the texture
+	texture = SDL_CreateTexture(renderer,
+		SDL_PIXELFORMAT_RGBA8888,
+		SDL_TEXTUREACCESS_TARGET,
+		w, h);
+
+	//check
+	if (!texture) {
+		std::ostringstream msg;
+		msg << "Failed to create a texture; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+
+	//set the metadata
+	clip.x = 0;
+	clip.y = 0;
+	if (SDL_QueryTexture(texture, nullptr, nullptr, &clip.w, &clip.h)) {
+		std::ostringstream msg;
+		msg << "Failed to record metadata for a newly created image";
+		msg << "; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+	local = true;
+
+	//blank (black) texture
+	SDL_SetRenderTarget(renderer, texture);
+	SDL_SetRenderDrawColor(renderer, blank.r, blank.g, blank.b, blank.a);
+	SDL_RenderFillRect(renderer, nullptr);
+	SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
+	SDL_SetRenderTarget(renderer, nullptr);
+
+	return texture;
+}
+
+SDL_Texture* Image::CopyTexture(SDL_Renderer* renderer, SDL_Texture* ptr) {
+	Free();
+	int w = 0, h = 0;
+
+	//get the info
+	SDL_QueryTexture(ptr, nullptr, nullptr, &w, &h);
+
+	//create a texture of (w, h) size (also sets the metadata)
+	Create(renderer, w, h);
+
+	//copy the argument texture to the local texture
+	SDL_SetRenderTarget(renderer, texture);
+	SDL_RenderCopy(renderer, ptr, nullptr, nullptr);
+	SDL_SetRenderTarget(renderer, nullptr);
+
+	//return the local texture
+	return texture;
+}
+
+SDL_Texture* Image::SetTexture(SDL_Texture* ptr) {
+	Free();
+
+	texture = ptr;
+
+	//set the metadata
+	clip.x = 0;
+	clip.y = 0;
+	if (SDL_QueryTexture(texture, nullptr, nullptr, &clip.w, &clip.h)) {
+		std::ostringstream msg;
+		msg << "Failed to record metadata for a newly set image";
+		msg << "; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+	local = false;
+
+	return texture;
+}
+
+SDL_Texture* Image::GetTexture() const {
+	return texture;
+}
+
+void Image::Free() {
+	if (local) {
+		SDL_DestroyTexture(texture);
+		local = false;
+	}
+	texture = nullptr;
+	clip = {0, 0, 0, 0};
+}
+
+void Image::DrawTo(SDL_Renderer* const renderer, Sint16 x, Sint16 y, double scaleX, double scaleY) {
+	if (!texture) {
+		throw(std::logic_error("No image texture to draw"));
+	}
+	SDL_Rect sclip = clip;
+	SDL_Rect dclip = {x, y, Uint16(clip.w * scaleX), Uint16(clip.h * scaleY)};
+	SDL_RenderCopy(renderer, texture, &sclip, &dclip);
+}
+
+void Image::SetAlpha(Uint8 a) {
+	if (SDL_SetTextureAlphaMod(texture, a)) {
+		std::ostringstream msg;
+		msg << "Failed to set alpha; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+}
+
+Uint8 Image::GetAlpha() {
+	Uint8 ret = 0;
+	if (SDL_GetTextureAlphaMod(texture, &ret)) {
+		std::ostringstream msg;
+		msg << "Failed to get alpha; " << SDL_GetError();
+		throw(std::runtime_error(msg.str()));
+	}
+	return ret;
+}

image.hpp

@@ -0,0 +1,73 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "SDL2/SDL.h"
+
+#include <string>
+
+class Image {
+public:
+	Image() = default;
+	Image(Image const& rhs) { *this = rhs; }
+	Image(Image&& rhs) { *this = std::move(rhs); }
+	Image(SDL_Renderer* r, std::string fname) { Load(r, fname); }
+	Image(SDL_Renderer* r, Uint16 w, Uint16 h) { Create(r, w, h); }
+	Image(SDL_Texture* p) { SetTexture(p); }
+	virtual ~Image() { Free(); }
+
+	Image& operator=(Image const&);
+	Image& operator=(Image&&);
+
+	SDL_Texture* Load(SDL_Renderer* renderer, std::string fname);
+	SDL_Texture* Create(SDL_Renderer* renderer, Uint16 w, Uint16 h, SDL_Color blank = {0, 0, 0, 255});
+	SDL_Texture* CopyTexture(SDL_Renderer* renderer, SDL_Texture* ptr);
+	SDL_Texture* SetTexture(SDL_Texture*);
+	SDL_Texture* GetTexture() const;
+	virtual void Free();
+
+	void DrawTo(SDL_Renderer* const, Sint16 x, Sint16 y, double scaleX = 1.0, double scaleY = 1.0);
+
+	void SetAlpha(Uint8 a);
+	Uint8 GetAlpha();
+
+	//Clip handlers
+	SDL_Rect SetClip(SDL_Rect r) { return clip = r; }
+	SDL_Rect GetClip() const { return clip; }
+
+	Sint16 SetClipX(Sint16 x) { return clip.x = x; }
+	Sint16 SetClipY(Sint16 y) { return clip.y = y; }
+	Uint16 SetClipW(Uint16 w) { return clip.w = w; }
+	Uint16 SetClipH(Uint16 h) { return clip.h = h; }
+
+	Sint16 GetClipX() const { return clip.x; }
+	Sint16 GetClipY() const { return clip.y; }
+	Uint16 GetClipW() const { return clip.w; }
+	Uint16 GetClipH() const { return clip.h; }
+
+	bool GetLocal() const { return local; }
+
+protected:
+	SDL_Texture* texture = nullptr;
+	SDL_Rect clip = {0, 0, 0, 0};
+	bool local = false;
+};

makefile

@@ -0,0 +1,31 @@
+#config
+INCLUDES+=.
+LIBS+=
+CXXFLAGS+=-std=c++11 $(addprefix -I,$(INCLUDES))
+
+#source
+CXXSRC=$(wildcard *.cpp)
+
+#objects
+OBJDIR=obj
+OBJ+=$(addprefix $(OBJDIR)/,$(CXXSRC:.cpp=.o))
+
+OUTDIR=.
+OUT=libturtlegui.a
+
+#targets
+all: $(OBJ) $(OUT)
+	ar -crs $(OUT) $(OBJ)
+
+$(OBJ): | $(OBJDIR)
+
+$(OUT): | $(OUTDIR)
+
+$(OBJDIR):
+	mkdir $(OBJDIR)
+
+$(OUTDIR):
+	mkdir $(OUTDIR)
+
+$(OBJDIR)/%.o: %.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<

render_text_texture.cpp

@@ -0,0 +1,46 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "render_text_texture.hpp"
+
+#include <stdexcept>
+
+SDL_Texture* renderTextTexture(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string str) {
+	//make the surface (from SDL_ttf)
+	SDL_Surface* surface = TTF_RenderText_Solid(font, str.c_str(), color);
+	if (!surface) {
+		throw(std::runtime_error("Failed to create a TTF surface"));
+	}
+
+	//convert to texture
+	SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, surface);
+
+	//cleanup
+	SDL_FreeSurface(surface);
+
+	//check
+	if (!texture) {
+		throw(std::runtime_error("Failed to create a TTF texture"));
+	}
+
+	//NOTE: free the texture yourself
+	return texture;
+}

render_text_texture.hpp

@@ -0,0 +1,29 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "SDL2/SDL.h"
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+
+SDL_Texture* renderTextTexture(SDL_Renderer*, TTF_Font*, SDL_Color color, std::string);

text_box.cpp

@@ -0,0 +1,75 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "text_box.hpp"
+
+#include <stdexcept>
+
+TextBox::TextBox() {
+	//
+}
+
+TextBox::~TextBox() {
+	//
+}
+
+void TextBox::DrawTo(SDL_Renderer* renderer) {
+	int renderY = posY;
+	for (std::list<TextLine>::iterator it = lineList.begin(); it != lineList.end(); it++) {
+		it->SetX(posX);
+		it->SetY(renderY);
+		it->DrawTo(renderer);
+		renderY += it->GetPointHeight();
+	}
+}
+
+void TextBox::PushLine(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string str) {
+	lineList.emplace_back(renderer, font, color, str, 0, 0);
+}
+
+void TextBox::PopLine(int num) {
+	//prevent underflow
+	num < lineList.size() ? num : lineList.size();
+
+	for (int i = 0; i < num; ++i) {
+		lineList.pop_front();
+	}
+}
+
+void TextBox::ClearLines() {
+	lineList.clear();
+}
+
+int TextBox::SetX(int i) {
+	return posX = i;
+}
+
+int TextBox::SetY(int i) {
+	return posY = i;
+}
+
+int TextBox::GetX() const {
+	return posX;
+}
+
+int TextBox::GetY() const {
+	return posY;
+}

text_box.hpp

@@ -0,0 +1,51 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "text_line.hpp"
+
+#include "SDL2/SDL.h"
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+#include <list>
+
+class TextBox {
+public:
+	TextBox();
+	~TextBox();
+
+	void DrawTo(SDL_Renderer*);
+
+	void PushLine(SDL_Renderer*, TTF_Font*, SDL_Color color, std::string);
+	void PopLine(int num = 1);
+	void ClearLines();
+
+	int SetX(int i);
+	int SetY(int i);
+	int GetX() const;
+	int GetY() const;
+
+private:
+	std::list<TextLine> lineList;
+	int posX = 0, posY = 0;
+};

text_field.cpp

@@ -0,0 +1,109 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "text_field.hpp"
+
+#include "render_text_texture.hpp"
+
+TextField::TextField() {
+	//
+}
+
+TextField::~TextField() {
+	SDL_DestroyTexture(texture);
+}
+
+void TextField::DrawTo(SDL_Renderer* renderer) {
+	if (!texture) {
+		return;
+	}
+	SDL_Rect dclip = {posX, posY, 0, 0};
+	SDL_QueryTexture(texture, nullptr, nullptr, &dclip.w, &dclip.h);
+	SDL_RenderCopy(renderer, texture, nullptr, &dclip);
+}
+
+std::string TextField::PushText(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string s) {
+	text += s;
+	return SetText(renderer, font, color, text);
+}
+
+std::string TextField::SetText(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string s) {
+	text = s;
+	SDL_DestroyTexture(texture);
+	if (text.size()) {
+		texture = renderTextTexture(renderer, font, color, text);
+	}
+	else {
+		texture = nullptr;
+	}
+	return text;
+}
+
+std::string TextField::PopChars(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, int i) {
+	if (text.size() > 0) {
+		text.erase(text.size() - i);
+	}
+	return SetText(renderer, font, color, text);
+}
+
+std::string TextField::GetText() {
+	return text;
+}
+
+bool TextField::MouseButtonDown(SDL_MouseButtonEvent const& event) {
+	BoundingBox cursorBox = {event.x, event.y, 0, 0};
+	BoundingBox fieldBox = bounds;
+	fieldBox.x += posX;
+	fieldBox.y += posY;
+	return focus = fieldBox.CheckOverlap(cursorBox);
+}
+
+BoundingBox TextField::SetBounds(BoundingBox b) {
+	return bounds = b;
+}
+
+BoundingBox TextField::GetBounds() {
+	return bounds;
+}
+
+bool TextField::SetFocus(bool b) {
+	return focus = b;
+}
+
+bool TextField::GetFocus() {
+	return focus;
+}
+
+int TextField::SetX(int i) {
+	return posX = i;
+}
+
+int TextField::SetY(int i) {
+	return posY = i;
+}
+
+int TextField::GetX() const {
+	return posX;
+}
+
+int TextField::GetY() const {
+	return posY;
+}

text_field.hpp

@@ -0,0 +1,65 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "bounding_box.hpp"
+
+#include "SDL2/SDL.h"
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+
+class TextField {
+public:
+	TextField();
+	~TextField();
+
+	void DrawTo(SDL_Renderer*);
+
+	//input
+	std::string PushText(SDL_Renderer*, TTF_Font*, SDL_Color color, std::string);
+	std::string SetText(SDL_Renderer*, TTF_Font*, SDL_Color color, std::string);
+	std::string PopChars(SDL_Renderer*, TTF_Font*, SDL_Color color, int i);
+
+	std::string GetText();
+
+	bool MouseButtonDown(SDL_MouseButtonEvent const& event);
+
+	BoundingBox SetBounds(BoundingBox b);
+	BoundingBox GetBounds();
+
+	bool SetFocus(bool b);
+	bool GetFocus();
+
+	//accessors & mutators
+	int SetX(int i);
+	int SetY(int i);
+	int GetX() const;
+	int GetY() const;
+
+private:
+	SDL_Texture* texture = nullptr;
+	std::string text;
+	BoundingBox bounds;
+	bool focus = false;
+	int posX = 0, posY = 0;
+};

text_line.cpp

@@ -0,0 +1,78 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#include "text_line.hpp"
+
+#include "render_text_texture.hpp"
+
+#include <stdexcept>
+
+TextLine::TextLine() {
+	//
+}
+
+TextLine::TextLine(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string str, int x, int y) {
+	SetText(renderer, font, color, str);
+	posX = x;
+	posY = y;
+}
+
+TextLine::~TextLine() {
+	ClearText();
+}
+
+void TextLine::DrawTo(SDL_Renderer* renderer) {
+	SDL_Rect dclip = {posX, posY, 0, 0};
+	SDL_QueryTexture(texture, nullptr, nullptr, &dclip.w, &dclip.h);
+	SDL_RenderCopy(renderer, texture, nullptr, &dclip);
+}
+
+void TextLine::SetText(SDL_Renderer* renderer, TTF_Font* font, SDL_Color color, std::string str) {
+	//just use the above global function
+	SDL_DestroyTexture(texture);
+	texture = renderTextTexture(renderer, font, color, str);
+	pointHeight = TTF_FontHeight(font);
+}
+
+void TextLine::ClearText() {
+	SDL_DestroyTexture(texture);
+	pointHeight = 0;
+}
+
+int TextLine::SetX(int i) {
+	return posX = i;
+}
+
+int TextLine::SetY(int i) {
+	return posY = i;
+}
+
+int TextLine::GetX() const {
+	return posX;
+}
+
+int TextLine::GetY() const {
+	return posY;
+}
+
+int TextLine::GetPointHeight() {
+	return pointHeight;
+}

text_line.hpp

@@ -0,0 +1,53 @@
+/* Copyright: (c) Kayne Ruse 2013-2016
+ * 
+ * This software is provided 'as-is', without any express or implied
+ * warranty. In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ * 
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ * 
+ * 1. The origin of this software must not be misrepresented; you must not
+ * claim that you wrote the original software. If you use this software
+ * in a product, an acknowledgment in the product documentation would be
+ * appreciated but is not required.
+ * 
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ * 
+ * 3. This notice may not be removed or altered from any source
+ * distribution.
+*/
+#pragma once
+
+#include "SDL2/SDL.h"
+#include "SDL2/SDL_ttf.h"
+
+#include <string>
+
+class TextLine {
+public:
+	TextLine();
+	TextLine(SDL_Renderer*, TTF_Font*, SDL_Color, std::string, int x, int y);
+	virtual ~TextLine();
+
+	void DrawTo(SDL_Renderer*);
+
+	void SetText(SDL_Renderer*, TTF_Font*, SDL_Color, std::string);
+	void ClearText();
+
+	//accessors & mutators
+	int SetX(int i);
+	int SetY(int i);
+	int GetX() const;
+	int GetY() const;
+
+	//utility
+	int GetPointHeight();
+
+protected:
+	SDL_Texture* texture = nullptr;
+	int posX = 0, posY = 0;
+	int pointHeight = 0; //internal use for TextBox
+};