87 lines
1.9 KiB
C++
87 lines
1.9 KiB
C++
#include <SDL.h>
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#include <memory>
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#include <iostream>
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#include <linux/interface.h>
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#include <linux/windows/misc.h>
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#include <frontends/common2/resources.h>
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namespace
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{
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struct CBITMAP : public CHANDLE
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{
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std::shared_ptr<SDL_Surface> surface;
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};
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std::string getFilename(const std::string & resource)
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{
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if (resource == "CHARSET40") return "CHARSET4.BMP";
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if (resource == "CHARSET82") return "CHARSET82.bmp";
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if (resource == "CHARSET8M") return "CHARSET8M.bmp";
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if (resource == "CHARSET8C") return "CHARSET8C.bmp";
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return resource;
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}
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}
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HBITMAP LoadBitmap(HINSTANCE hInstance, const char * resource)
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{
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if (resource)
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{
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const std::string filename = getFilename(resource);
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const std::string path = getResourcePath() + filename;
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std::shared_ptr<SDL_Surface> surface(SDL_LoadBMP(path.c_str()), SDL_FreeSurface);
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if (surface)
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{
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CBITMAP * bitmap = new CBITMAP;
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bitmap->surface = surface;
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return bitmap;
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}
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else
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{
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std::cerr << "Cannot load: " << resource << " with path: " << path << std::endl;
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return nullptr;
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}
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}
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else
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{
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std::cerr << "Cannot load invalid resource." << std::endl;
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return nullptr;
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}
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}
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LONG GetBitmapBits(HBITMAP hbit, LONG cb, LPVOID lpvBits)
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{
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const CBITMAP & bitmap = dynamic_cast<CBITMAP&>(*hbit);
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SDL_LockSurface(bitmap.surface.get());
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const SDL_Surface * surface = bitmap.surface.get();
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const char * source = static_cast<char *>(surface->pixels);
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const size_t size = surface->h * surface->w / 8;
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const size_t requested = cb;
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const size_t copied = std::min(requested, size);
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char * dest = static_cast<char *>(lpvBits);
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for (size_t i = 0; i < copied; ++i)
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{
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const size_t offset = i * 8;
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char val = 0;
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for (size_t j = 0; j < 8; ++j)
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{
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const char pixel = *(source + offset + j);
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val = (val << 1) | pixel;
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}
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dest[i] = val;
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}
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SDL_UnlockSurface(bitmap.surface.get());
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return copied;
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}
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