src/graphics/Gauge.cpp

   1 /*
   2  * Gauge.cpp
   3  *
   4  *  Created on: Aug 7, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "Gauge.h"
   9
  10 using geometry::Point;
  11
  12 namespace graphics {
  13
  14 // TODO: add start and end "ignore" offsets
  15 void Gauge::Draw(SDL_Surface *dest, Point<int> position, int width, int fullWidth) const {
  16         SDL_Rect srcRect, destRect;
  17
  18         // start
  19         srcRect.h = height;
  20         destRect.x = position.X();
  21         destRect.y = position.Y();
  22         // full part
  23         if (fullWidth >= startWidth) { // completely filled
  24                 srcRect.x = fullX;
  25                 srcRect.y = fullY;
  26                 srcRect.w = startWidth;
  27                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  28         } else if (fullWidth > 0) { // partially filled
  29                 srcRect.x = fullX;
  30                 srcRect.y = fullY;
  31                 srcRect.w = fullWidth;
  32                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  33         }
  34         // empty part
  35         if (fullWidth == 0) { // completely empty
  36                 srcRect.x = emptyX;
  37                 srcRect.y = emptyY;
  38                 srcRect.w = startWidth;
  39                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  40         } else if (fullWidth < startWidth) { // partially empty
  41                 srcRect.x = emptyX + fullWidth;
  42                 srcRect.y = emptyY;
  43                 srcRect.w = startWidth - fullWidth;
  44                 destRect.x = position.X() + fullWidth;
  45                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  46         }
  47
  48         destRect.x = position.X() + startWidth;
  49
  50         // fill
  51         if (fullWidth >= width - endWidth) { // completely filled
  52                 srcRect.x = fullX + startWidth;
  53                 srcRect.y = fullY;
  54                 srcRect.w = repeatWidth;
  55                 int fillWidth(width - startWidth - endWidth);
  56                 int fillCursor(0);
  57                 while (fillCursor < fillWidth) {
  58                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  59                         destRect.x += repeatWidth;
  60                         fillCursor += repeatWidth;
  61                 }
  62         } else if (fullWidth <= startWidth) { // completely empty
  63                 srcRect.x = emptyX + startWidth;
  64                 srcRect.y = emptyY;
  65                 srcRect.w = repeatWidth;
  66                 int fillWidth(width - startWidth - endWidth);
  67                 int fillCursor(0);
  68                 while (fillCursor < fillWidth) {
  69                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  70                         destRect.x += repeatWidth;
  71                         fillCursor += repeatWidth;
  72                 }
  73         } else { // partially filled/empty
  74                 srcRect.x = fullX + startWidth;
  75                 srcRect.y = fullY;
  76                 srcRect.w = repeatWidth;
  77                 int fillCursor(0);
  78                 while (fillCursor < fullWidth) {
  79                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  80                         destRect.x += repeatWidth;
  81                         fillCursor += repeatWidth;
  82                 }
  83                 srcRect.x = emptyX + startWidth;
  84                 srcRect.y = emptyY;
  85                 int remaining(width - startWidth - endWidth);
  86                 while (fillCursor < remaining) {
  87                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  88                         destRect.x += repeatWidth;
  89                         fillCursor += repeatWidth;
  90                 }
  91         }
  92
  93         // end
  94         // full part
  95         if (fullWidth >= width) { // completely filled
  96                 srcRect.x = fullX + startWidth + repeatWidth;
  97                 srcRect.y = fullY;
  98                 srcRect.w = endWidth;
  99                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 100         } else if (fullWidth > (width - endWidth)) { // partially filled
 101                 srcRect.x = fullX + startWidth + repeatWidth;
 102                 srcRect.y = fullY;
 103                 srcRect.w = endWidth - width + fullWidth;
 104                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 105         }
 106         // empty part
 107         if (fullWidth <= width - endWidth) { // completely empty
 108                 srcRect.x = emptyX + startWidth + repeatWidth;
 109                 srcRect.y = emptyY;
 110                 srcRect.w = startWidth;
 111                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 112         } else if (fullWidth > (width - endWidth) && fullWidth < width) { // partially empty
 113                 srcRect.x = emptyX + startWidth + repeatWidth + fullWidth - width + endWidth;
 114                 srcRect.y = emptyY;
 115                 srcRect.w = width - fullWidth;
 116                 destRect.x = position.X() + fullWidth;
 117                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 118         }
 119
 120 }
 121
 122 }