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, Uint8 level) const {
  16         int fullWidth(width * level / 255);
  17         SDL_Rect srcRect, destRect;
  18
  19         // start
  20         srcRect.h = height;
  21         destRect.x = position.X();
  22         destRect.y = position.Y();
  23         // full part
  24         if (fullWidth >= startWidth) { // completely filled
  25                 srcRect.x = fullX;
  26                 srcRect.y = fullY;
  27                 srcRect.w = startWidth;
  28                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  29         } else if (fullWidth > 0) { // partially filled
  30                 srcRect.x = fullX;
  31                 srcRect.y = fullY;
  32                 srcRect.w = fullWidth;
  33                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  34         }
  35         // empty part
  36         if (fullWidth == 0) { // completely empty
  37                 srcRect.x = emptyX;
  38                 srcRect.y = emptyY;
  39                 srcRect.w = startWidth;
  40                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  41         } else if (fullWidth < startWidth) { // partially empty
  42                 srcRect.x = emptyX + fullWidth;
  43                 srcRect.y = emptyY;
  44                 srcRect.w = startWidth - fullWidth;
  45                 destRect.x = position.X() + fullWidth;
  46                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  47         }
  48
  49         destRect.x = position.X() + startWidth;
  50
  51         // fill
  52         if (fullWidth >= width - endWidth) { // completely filled
  53                 srcRect.x = fullX + startWidth;
  54                 srcRect.y = fullY;
  55                 srcRect.w = repeatWidth;
  56                 int fillWidth(width - startWidth - endWidth);
  57                 int fillCursor(0);
  58                 while (fillCursor < fillWidth) {
  59                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  60                         destRect.x += repeatWidth;
  61                         fillCursor += repeatWidth;
  62                 }
  63         } else if (fullWidth <= startWidth) { // completely empty
  64                 srcRect.x = emptyX + startWidth;
  65                 srcRect.y = emptyY;
  66                 srcRect.w = repeatWidth;
  67                 int fillWidth(width - startWidth - endWidth);
  68                 int fillCursor(0);
  69                 while (fillCursor < fillWidth) {
  70                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  71                         destRect.x += repeatWidth;
  72                         fillCursor += repeatWidth;
  73                 }
  74         } else { // partially filled/empty
  75                 srcRect.x = fullX + startWidth;
  76                 srcRect.y = fullY;
  77                 srcRect.w = repeatWidth;
  78                 int fillCursor(0);
  79                 while (fillCursor < fullWidth) {
  80                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  81                         destRect.x += repeatWidth;
  82                         fillCursor += repeatWidth;
  83                 }
  84                 srcRect.x = emptyX + startWidth;
  85                 srcRect.y = emptyY;
  86                 int remaining(width - startWidth - endWidth);
  87                 while (fillCursor < remaining) {
  88                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  89                         destRect.x += repeatWidth;
  90                         fillCursor += repeatWidth;
  91                 }
  92         }
  93
  94         // end
  95         // full part
  96         if (fullWidth >= width) { // completely filled
  97                 srcRect.x = fullX + startWidth + repeatWidth;
  98                 srcRect.y = fullY;
  99                 srcRect.w = endWidth;
 100                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 101         } else if (fullWidth > (width - endWidth)) { // partially filled
 102                 srcRect.x = fullX + startWidth + repeatWidth;
 103                 srcRect.y = fullY;
 104                 srcRect.w = endWidth - width + fullWidth;
 105                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 106         }
 107         // empty part
 108         if (fullWidth <= width - endWidth) { // completely empty
 109                 srcRect.x = emptyX + startWidth + repeatWidth;
 110                 srcRect.y = emptyY;
 111                 srcRect.w = startWidth;
 112                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 113         } else if (fullWidth > (width - endWidth) && fullWidth < width) { // partially empty
 114                 srcRect.x = emptyX + startWidth + repeatWidth + fullWidth - width + endWidth;
 115                 srcRect.y = emptyY;
 116                 srcRect.w = width - fullWidth;
 117                 destRect.x = position.X() + fullWidth;
 118                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 119         }
 120
 121 }
 122
 123 }