Kayne Ruse
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/* Copyright: (c) Kayne Ruse 2013
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "raster_font.hpp"
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#include <stdexcept>
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/* It might be more efficient to render to a different surface (like an Image)
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* rather than calling this function with all of it's '%' and '/'.
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*/
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void RasterFont::DrawStringTo(std::string s, SDL_Surface* const dest, Sint16 x, Sint16 y) {
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if (!image.GetSurface()) {
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throw(std::runtime_error("RasterFont not loaded"));
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}
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const Uint16 w = image.GetClipW();
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const Uint16 h = image.GetClipH();
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for (int i = 0; i < s.size(); i++) {
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image.SetClipX(s[i] % 16 * w);
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image.SetClipY(s[i] / 16 * h);
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image.DrawTo(dest, x + i * w, y);
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}
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}
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/* Note: This class can only take a raster font with 16*16 characters, and the
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* indevidual characters must have the same dimensions. Overall this class is too
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* restrictive; I suggest using a 3rd party library.
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*/
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SDL_Surface* RasterFont::LoadSurface(std::string fname) {
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image.LoadSurface(fname);
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image.SetClipW(image.GetSurface()->w/16);
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image.SetClipH(image.GetSurface()->h/16);
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return image.GetSurface();
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}
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SDL_Surface* RasterFont::SetSurface(SDL_Surface* p) {
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image.SetSurface(p);
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image.SetClipW(image.GetSurface()->w/16);
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image.SetClipH(image.GetSurface()->h/16);
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return image.GetSurface();
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}
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