Finished a prototype of Region, needs testing

2013-09-19 16:52:15 +10:00
parent de0227a1cf
commit 9b64c67068
5 changed files with 273 additions and 24 deletions
@@ -0,0 +1,145 @@
+/* Copyright: (c) Kayne Ruse 2013
+ * 
+ * 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 <stdexcept>
+#include <sstream>
+
+Image& Image::operator=(Image const& rhs) {
+	//don't screw yourself
+	if (this == &rhs) {
+		return *this;
+	}
+
+	FreeSurface();
+
+	//Copy the other Image's stuff
+	surface = rhs.surface;
+	clip = rhs.clip;
+	local = false;
+}
+
+Image& Image::operator=(Image&& rhs) {
+	//don't screw yourself
+	if (this == &rhs) {
+		return *this;
+	}
+
+	FreeSurface();
+
+	//Steal the other Image's stuff
+	surface = rhs.surface;
+	clip = rhs.clip;
+	local = rhs.local;
+
+	rhs.surface = nullptr;
+	rhs.clip = {0, 0, 0, 0};
+	rhs.local = false;
+}
+
+SDL_Surface* Image::LoadSurface(std::string fname) {
+	FreeSurface();
+	SDL_Surface* p = SDL_LoadBMP(fname.c_str());
+	if (!p) {
+		std::ostringstream os;
+		os << "Failed to load file: " << fname;
+		throw(std::runtime_error(os.str()));
+	}
+	surface = p;
+	clip = {0, 0, (Uint16)surface->w, (Uint16)surface->h};
+	local = true;
+	SetTransparentColor(255, 0, 255); //default
+	return surface;
+}
+
+SDL_Surface* Image::CreateSurface(Uint16 w, Uint16 h) {
+	FreeSurface();
+	Uint32 rmask, gmask, bmask, amask;
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+    rmask = 0xff000000;
+    gmask = 0x00ff0000;
+    bmask = 0x0000ff00;
+    amask = 0x000000ff;
+#else
+    rmask = 0x000000ff;
+    gmask = 0x0000ff00;
+    bmask = 0x00ff0000;
+    amask = 0xff000000;
+#endif
+	SDL_Surface* p = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, rmask, gmask, bmask, amask);
+	if (!p) {
+		throw(std::runtime_error("Failed to create Image surface"));
+	}
+	surface = p;
+	clip = {0, 0, (Uint16)surface->w, (Uint16)surface->h};
+	local = true;
+	SetTransparentColor(255, 0, 255); //default
+	return surface;
+}
+
+SDL_Surface* Image::SetSurface(SDL_Surface* p) {
+	FreeSurface();
+	if (!p) {
+		throw(std::invalid_argument("No surface pointer provided"));
+	}
+	surface = p;
+	clip = {0, 0, (Uint16)surface->w, (Uint16)surface->h};
+	local = false;
+	return surface;
+}
+
+void Image::FreeSurface() {
+	if (local) {
+		SDL_FreeSurface(surface);
+		local = false;
+	}
+	surface = nullptr;
+	clip = {0, 0, 0, 0};
+}
+
+void Image::DrawTo(SDL_Surface* dest, Sint16 x, Sint16 y) {
+	if (!surface) {
+		throw(std::logic_error("No image surface to draw"));
+	}
+	SDL_Rect sclip = clip, dclip = {x,y};
+	SDL_BlitSurface(surface, &sclip, dest, &dclip);
+}
+
+void Image::SetTransparentColor(Uint8 r, Uint8 g, Uint8 b) {
+	if (!surface) {
+		throw(std::logic_error("Failed to set the transparent color"));
+	}
+	if (!local) {
+		throw(std::logic_error("Cannot set the transparent color of a non-local surface"));
+	}
+	SDL_SetColorKey(surface, SDL_SRCCOLORKEY, SDL_MapRGB(surface->format, r, g, b));
+}
+
+void Image::ClearTransparentColor() {
+	if (!surface) {
+		throw(std::logic_error("Failed to clear the transparent color"));
+	}
+	if (!local) {
+		throw(std::logic_error("Cannot clear the transparent color of a non-local surface"));
+	}
+	SDL_SetColorKey(surface, 0, 0);
+}
@@ -0,0 +1,73 @@
+/* Copyright: (c) Kayne Ruse 2013
+ * 
+ * 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.
+*/
+#ifndef IMAGE_HPP_
+#define IMAGE_HPP_
+
+#include "SDL/SDL.h"
+#include <string>
+
+class Image {
+public:
+	Image() = default;
+	Image(Image const& rhs) { *this = rhs; }
+	Image(Image&& rhs) { *this = std::move(rhs); }
+	Image(std::string fname) { LoadSurface(fname); }
+	Image(Uint16 w, Uint16 h) { CreateSurface(w, h); }
+	Image(SDL_Surface* p) { SetSurface(p); }
+	~Image() { FreeSurface(); }
+
+	Image& operator=(Image const&);
+	Image& operator=(Image&&);
+
+	SDL_Surface* LoadSurface(std::string fname);
+	SDL_Surface* CreateSurface(Uint16 w, Uint16 h);
+	SDL_Surface* SetSurface(SDL_Surface*);
+	SDL_Surface* GetSurface() const { return surface; }
+	void FreeSurface();
+
+	void DrawTo(SDL_Surface* const, Sint16 x, Sint16 y);
+
+	//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; }
+
+	void SetTransparentColor(Uint8 r, Uint8 g, Uint8 b);
+	void ClearTransparentColor();
+protected:
+	SDL_Surface* surface = nullptr;
+	SDL_Rect clip = {0, 0, 0, 0};
+	bool local = false;
+};
+
+#endif