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#include "gdimg.h" |
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int GDImg::defaultBg=0xFFFFFF; |
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GDImg::GDImg(int w, int h, const char* fn, int bg_rgb) { |
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fout=NULL; |
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imgH=h; |
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imgW=w; |
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img = gdImageCreate(imgW, imgH); |
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currentColor=-1; |
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if (fn!=NULL) setFile(fn); |
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//allocate white background color by default |
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bgColor=color(bg_rgb); |
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gdImageColorTransparent(img, -1); //default is non-transparent white background |
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} |
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void GDImg::setBg(int rgb) { |
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//if (rgb!=defaultBg) bgColor=color(rgb); |
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gdImageColorDeallocate(img, bgColor); |
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bgColor=this->color(rgb); |
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} |
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GDImg::~GDImg() { |
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gdImageDestroy(img); |
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if (fout!=NULL && fout!=stdout) fclose(fout); |
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} |
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int GDImg::color(byte r, byte g, byte b) { |
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return gdImageColorAllocate(img,(int)r,(int)g,(int)b); |
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} |
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void GDImg::line(int x1, int y1, int x2, int y2, int color) { |
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if (color==-1) color=currentColor; |
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gdImageLine(img,x1,y1,x2,y2,color); |
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} |
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void GDImg::rectangle(int x1, int y1, int x2, int y2, int color) { |
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if (color==-1) color=currentColor; |
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gdImageRectangle(img,x1,y1,x2,y2,color); |
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} |
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void GDImg::fillRectangle(int x1, int y1, int x2, int y2, int color) { |
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if (color==-1) color=currentColor; |
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gdImageFilledRectangle(img,x1,y1,x2,y2,color); |
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} |
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void GDImg::fillPolygon(gdPointPtr points, int ptotal, int color) { |
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if (color==-1) color=currentColor; |
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gdImageFilledPolygon(img, points,ptotal,color); |
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} |
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void GDImg::setTransparent(int cidx) { |
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//cidx must be the color index of a color allocated previously for img! |
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gdImageColorTransparent(img,cidx); |
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} |
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void GDImg::setFile(const char* fname) { |
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if (fout!=NULL && fout!=stdout) fclose(fout); |
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if (fname[0]=='-' && fname[1]==0) { |
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//special "-" file name means stdout |
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fout=stdout; |
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} |
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else { |
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fout=fopen(fname, "wb"); |
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if (fout==NULL) GError("Error: cannot open file %s for writing!\n",fname); |
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} |
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} |
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void GDImg::setFile(FILE* f) { |
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if (fout!=NULL && fout!=stdout) fclose(fout); |
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fout=f; |
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} |
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void GDImg::write(const char* fname) { |
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if (fname==NULL && fout==NULL) |
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GError("Error at GDImg::writeGIF() - no destination file given!\n"); |
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if (fname!=NULL) setFile(fname); |
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gdImageGif(img,fout); |
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} |
