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/TypeDescription.h"
  11
  12 using geometry::Vector;
  13 using loader::FieldDescription;
  14 using loader::TypeDescription;
  15
  16 namespace graphics {
  17
  18 // TODO: maybe create a cache for frames?
  19 void Frame::Draw(SDL_Surface *dest, const Vector<int> &position, int width, int height) const {
  20         if (!surface) {
  21                 SDL_Rect rect;
  22                 rect.x = position.X();
  23                 rect.y = position.Y();
  24                 rect.w = width;
  25                 rect.h = height;
  26                 SDL_FillRect(dest, &rect, SDL_MapRGB(dest->format, 0xFF, 0x00, 0x00));
  27                 return;
  28         }
  29         // top-left corner
  30         SDL_Rect srcRect;
  31         srcRect.x = offset.X();
  32         srcRect.y = offset.Y();
  33         srcRect.w = BorderWidth();
  34         srcRect.h = BorderHeight();
  35         SDL_Rect destRect;
  36         destRect.x = position.X();
  37         destRect.y = position.Y();
  38         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  39
  40         // top border
  41         srcRect.x += BorderWidth();
  42         srcRect.w = RepeatWidth();
  43         destRect.x += BorderWidth();
  44         int fullRepeatWidth(width - (2 * BorderWidth()));
  45         int repeatCursor(0);
  46         while (repeatCursor < fullRepeatWidth) {
  47                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  48                 destRect.x += RepeatWidth();
  49                 repeatCursor += RepeatWidth();
  50         }
  51
  52         // top-right corner
  53         srcRect.x += RepeatWidth();
  54         srcRect.w = BorderWidth();
  55         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  56
  57         // middle
  58         destRect.y += BorderHeight();
  59         int fullRepeatHeight(height - (2 * BorderHeight()));
  60         int hRepeatCursor(0);
  61         while (hRepeatCursor < fullRepeatHeight) {
  62
  63                 // left border
  64                 srcRect.x = offset.X();
  65                 srcRect.y = offset.Y() + BorderHeight();
  66                 srcRect.w = BorderWidth();
  67                 srcRect.h = RepeatHeight();
  68                 destRect.x = position.X();
  69                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  70
  71                 // fill
  72                 repeatCursor = 0;
  73                 srcRect.x += BorderWidth();
  74                 srcRect.w = RepeatWidth();
  75                 destRect.x += BorderWidth();
  76                 while (repeatCursor < fullRepeatWidth) {
  77                         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  78                         destRect.x += RepeatWidth();
  79                         repeatCursor += RepeatWidth();
  80                 }
  81
  82                 // right border
  83                 srcRect.x += RepeatWidth();
  84                 srcRect.w = BorderWidth();
  85                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  86
  87                 destRect.y += RepeatHeight();
  88                 hRepeatCursor += RepeatHeight();
  89         }
  90
  91         // bottom-left corner
  92         srcRect.x = offset.X();
  93         srcRect.y = offset.Y() + BorderHeight() + RepeatHeight();
  94         srcRect.w = BorderWidth();
  95         srcRect.h = BorderHeight();
  96         destRect.x = position.X();
  97         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
  98
  99         // bottom border
 100         srcRect.x += BorderWidth();
 101         srcRect.w = RepeatWidth();
 102         destRect.x += BorderWidth();
 103         repeatCursor = 0;
 104         while (repeatCursor < fullRepeatWidth) {
 105                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 106                 destRect.x += RepeatWidth();
 107                 repeatCursor += RepeatWidth();
 108         }
 109         if (fullRepeatWidth < fullRepeatWidth) {
 110                 srcRect.w = fullRepeatWidth - fullRepeatWidth;
 111                 SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 112                 destRect.x += fullRepeatWidth - fullRepeatWidth;
 113         }
 114
 115         // bottom-right corner
 116         srcRect.x += RepeatWidth();
 117         srcRect.w = BorderWidth();
 118         SDL_BlitSurface(surface, &srcRect, dest, &destRect);
 119 }
 120
 121
 122 void Frame::CreateTypeDescription() {
 123         Frame f;
 124
 125         int imageId(TypeDescription::GetTypeId("Image"));
 126         int vectorId(TypeDescription::GetTypeId("Vector"));
 127
 128         TypeDescription &td(TypeDescription::CreateOrGet("Frame"));
 129         td.SetDescription(
 130                         "A frame is basically a border + a background texture.\n"
 131                         "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.");
 132         td.SetConstructor(&Construct);
 133         td.SetSize(sizeof(Frame));
 134
 135         td.AddField("image", FieldDescription(((char *)&f.surface) - ((char *)&f), imageId).SetReferenced().SetDescription("the underlying graphic from which the frame parts are cut"));
 136         td.AddField("border", FieldDescription(((char *)&f.borderSize) - ((char *)&f), vectorId).SetDescription("size of the border part, dimensions of top-left corner"));
 137         td.AddField("repeat", FieldDescription(((char *)&f.repeatSize) - ((char *)&f), vectorId).SetDescription("size of the repeat part, dimensions of a single tile of the background texture"));
 138         td.AddField("offset", FieldDescription(((char *)&f.offset) - ((char *)&f), vectorId).SetDescription("offset into the image where to start cutting, coordinates of the top-left corner on the image"));
 139 }
 140
 141 void Frame::Construct(void *data) {
 142         new (data) Frame;
 143 }
 144
 145 }