Imported TextLine and TextBox, added Image::CopyTexture

common/graphics/image.cpp

@@ -101,9 +101,10 @@ SDL_Texture* Image::Create(SDL_Renderer* renderer, Uint16 w, Uint16 h) {
 	//make the texture
 	texture = SDL_CreateTexture(renderer,
 		SDL_PIXELFORMAT_RGBA8888,
-		SDL_TEXTUREACCESS_STATIC,
+		SDL_TEXTUREACCESS_TARGET,
 		w, h);
 
+	//check
 	if (!texture) {
 		std::ostringstream msg;
 		msg << "Failed to create a texture; " << SDL_GetError();
@@ -121,6 +122,31 @@ SDL_Texture* Image::Create(SDL_Renderer* renderer, Uint16 w, Uint16 h) {
 	}
 	local = true;
 
+	//blank (black) texture
+	SDL_SetRenderTarget(renderer, texture);
+	SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
+	SDL_RenderFillRect(renderer, nullptr);
+	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;
 }
 

common/graphics/image.hpp

@@ -40,6 +40,7 @@ public:
 
 	SDL_Texture* Load(SDL_Renderer* renderer, std::string fname);
 	SDL_Texture* Create(SDL_Renderer* renderer, Uint16 w, Uint16 h);
+	SDL_Texture* CopyTexture(SDL_Renderer* renderer, SDL_Texture* ptr);
 	SDL_Texture* SetTexture(SDL_Texture*);
 	SDL_Texture* GetTexture() const;
 	virtual void Free();

common/ui/text_box.cpp

@@ -0,0 +1,56 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * 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 posX, int posY, int pointSize) {
+	for (std::list<TextLine>::iterator it = lineList.begin(); it != lineList.end(); it++) {
+		it->DrawTo(renderer, posX, posY);
+		posY -= pointSize;
+	}
+}
+
+void TextBox::PushLine(SDL_Renderer* renderer, TTF_Font* font, std::string str, SDL_Color color) {
+	lineList.emplace_front(renderer, font, str, color);
+}
+
+void TextBox::PopLine(int num) {
+	//prevent underflow
+	num < lineList.size() ? num : lineList.size();
+
+	for (int i = 0; i < num; ++i) {
+		lineList.pop_back();
+	}
+}
+
+void TextBox::ClearLines() {
+	lineList.clear();
+}

common/ui/text_box.hpp

@@ -0,0 +1,45 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * 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*, int posX, int posY, int pointSize);
+
+	void PushLine(SDL_Renderer*, TTF_Font*, std::string, SDL_Color color);
+	void PopLine(int num = 1);
+	void ClearLines();
+
+private:
+	std::list<TextLine> lineList;
+};

common/ui/text_line.cpp

@@ -0,0 +1,70 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * 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 <stdexcept>
+
+SDL_Texture* renderTextTexture(SDL_Renderer* renderer, TTF_Font* font, std::string str, SDL_Color color) {
+	//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;
+}
+
+TextLine::TextLine() {
+	//
+}
+
+TextLine::~TextLine() {
+	ClearText();
+}
+
+void TextLine::DrawTo(SDL_Renderer* renderer, int posX, int posY) {
+	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, std::string str, SDL_Color color) {
+	//just use the above global function
+	SDL_DestroyTexture(texture);
+	texture = renderTextTexture(renderer, font, str, color);
+}
+
+void TextLine::ClearText() {
+	SDL_DestroyTexture(texture);
+}

common/ui/text_line.hpp

@@ -0,0 +1,45 @@
+/* Copyright: (c) Kayne Ruse 2013-2015
+ * 
+ * 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*, std::string, SDL_Color color);
+
+class TextLine {
+public:
+	TextLine();
+	TextLine(SDL_Renderer* r, TTF_Font* f, std::string s, SDL_Color c)
+		{ SetText(r, f, s, c); }
+	~TextLine();
+
+	void DrawTo(SDL_Renderer*, int posX, int posY);
+
+	void SetText(SDL_Renderer*, TTF_Font*, std::string, SDL_Color color);
+	void ClearText();
+
+protected:
+	SDL_Texture* texture = nullptr;
+};