src/graphics/Frame.cpp

   1 /*
   2  * Frame.cpp
   3  *
   4  *  Created on: Aug 7, 2012
   5  *      Author: holy
   6  */
   7
   8 #include "Frame.h"
   9
  10 #include "../loader/Interpreter.h"
  11 #include "../loader/TypeDescription.h"
  12
  13 using geometry::Vector;
  14 using loader::FieldDescription;
  15 using loader::Interpreter;
  16 using loader::TypeDescription;
  17
  18 namespace graphics {
  19
  20 // TODO: maybe create a cache for frames?
  21 void Frame::Draw(SDL_Surface *dest, const Vector<int> &position, int width, int height) const {
  22         if (!surface) {
  23                 SDL_Rect rect;
  24                 rect.x = position.X();
  25                 rect.y = position.Y();
  26                 rect.w = width;
  27                 rect.h = height;
  28                 SDL_FillRect(dest, &rect, SDL_MapRGB(dest->format, 0xFF, 0x00, 0x00));
  29                 return;
  30         }
  31         // top-left corner
  32         SDL_Rect srcRect;
  33         srcRect.x = offset.X();
  34         srcRect.y = offset.Y();
  35         srcRect.w = BorderWidth();
  36         srcRect.h = BorderHeight();
  37         SDL_Rect destRect;
  38         destRect.x = position.X();
  39         destRect.y = position.Y();
  40         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  41
  42         // top border
  43         srcRect.x += BorderWidth();
  44         srcRect.w = RepeatWidth();
  45         destRect.x += BorderWidth();
  46         int fullRepeatWidth(width - (2 * BorderWidth()));
  47         int repeatCursor(0);
  48         while (repeatCursor < fullRepeatWidth) {
  49                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  50                 destRect.x += RepeatWidth();
  51                 repeatCursor += RepeatWidth();
  52         }
  53
  54         // top-right corner
  55         srcRect.x += RepeatWidth();
  56         srcRect.w = BorderWidth();
  57         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  58
  59         // middle
  60         destRect.y += BorderHeight();
  61         int fullRepeatHeight(height - (2 * BorderHeight()));
  62         int hRepeatCursor(0);
  63         while (hRepeatCursor < fullRepeatHeight) {
  64
  65                 // left border
  66                 srcRect.x = offset.X();
  67                 srcRect.y = offset.Y() + BorderHeight();
  68                 srcRect.w = BorderWidth();
  69                 srcRect.h = RepeatHeight();
  70                 destRect.x = position.X();
  71                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  72
  73                 // fill
  74                 repeatCursor = 0;
  75                 srcRect.x += BorderWidth();
  76                 srcRect.w = RepeatWidth();
  77                 destRect.x += BorderWidth();
  78                 while (repeatCursor < fullRepeatWidth) {
  79                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  80                         destRect.x += RepeatWidth();
  81                         repeatCursor += RepeatWidth();
  82                 }
  83
  84                 // right border
  85                 srcRect.x += RepeatWidth();
  86                 srcRect.w = BorderWidth();
  87                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  88
  89                 destRect.y += RepeatHeight();
  90                 hRepeatCursor += RepeatHeight();
  91         }
  92
  93         // bottom-left corner
  94         srcRect.x = offset.X();
  95         srcRect.y = offset.Y() + BorderHeight() + RepeatHeight();
  96         srcRect.w = BorderWidth();
  97         srcRect.h = BorderHeight();
  98         destRect.x = position.X();
  99         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 100
 101         // bottom border
 102         srcRect.x += BorderWidth();
 103         srcRect.w = RepeatWidth();
 104         destRect.x += BorderWidth();
 105         repeatCursor = 0;
 106         while (repeatCursor < fullRepeatWidth) {
 107                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 108                 destRect.x += RepeatWidth();
 109                 repeatCursor += RepeatWidth();
 110         }
 111         if (fullRepeatWidth < fullRepeatWidth) {
 112                 srcRect.w = fullRepeatWidth - fullRepeatWidth;
 113                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 114                 destRect.x += fullRepeatWidth - fullRepeatWidth;
 115         }
 116
 117         // bottom-right corner
 118         srcRect.x += RepeatWidth();
 119         srcRect.w = BorderWidth();
 120         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 121 }
 122
 123
 124 void Frame::CreateTypeDescription() {
 125         Frame f;
 126
 127         TypeDescription &td(TypeDescription::Create(TYPE_ID, "Frame"));
 128         td.SetDescription(
 129                         "A frame is basically a border + a background texture.\n"
 130                         "It splits an image into 3*3 parts where the edges are kept as is and the sides and the middle part are repeated as needed.");
 131         td.SetConstructor(&Construct);
 132         td.SetSize(sizeof(Frame));
 133
 134         td.AddField("image", FieldDescription(((char *)&f.surface) - ((char *)&f), Interpreter::IMAGE_ID).SetReferenced().SetDescription("the underlying graphic from which the frame parts are cut"));
 135         td.AddField("border", FieldDescription(((char *)&f.borderSize) - ((char *)&f), Interpreter::VECTOR_ID).SetDescription("size of the border part, dimensions of top-left corner"));
 136         td.AddField("repeat", FieldDescription(((char *)&f.repeatSize) - ((char *)&f), Interpreter::VECTOR_ID).SetDescription("size of the repeat part, dimensions of a single tile of the background texture"));
 137         td.AddField("offset", FieldDescription(((char *)&f.offset) - ((char *)&f), Interpreter::VECTOR_ID).SetDescription("offset into the image where to start cutting, coordinates of the top-left corner on the image"));
 138 }
 139
 140 void Frame::Construct(void *data) {
 141         new (data) Frame;
 142 }
 143
 144 }