lib/readers/image.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <memory.h>
   4 #include "../gfxdevice.h"
   5 #include "../gfxsource.h"
   6 #include "../gfxtools.h"
   7 #include "../log.h"
   8 #include "../mem.h"
   9 #include "../jpeg.h"
  10 #include "../png.h"
  11 #include "image.h"
  12
  13 typedef struct _image_page_internal
  14 {
  15 } image_page_internal_t;
  16
  17 typedef struct _image_doc_internal
  18 {
  19     gfximage_t img;
  20 } image_doc_internal_t;
  21
  22 void imagepage_destroy(gfxpage_t*image_page)
  23 {
  24     image_page_internal_t*i= (image_page_internal_t*)image_page->internal;
  25     free(image_page->internal);image_page->internal = 0;
  26     free(image_page);image_page=0;
  27 }
  28
  29 void imagepage_render(gfxpage_t*page, gfxdevice_t*output)
  30 {
  31     image_page_internal_t*i = (image_page_internal_t*)page->internal;
  32     image_doc_internal_t*pi = (image_doc_internal_t*)page->parent->internal;
  33
  34     gfxcxform_t cxform;
  35     memset(&cxform, 0, sizeof(cxform));
  36     cxform.rr = 1;
  37     cxform.gg = 1;
  38     cxform.bb = 1;
  39     cxform.aa = 1;
  40
  41     gfxmatrix_t m;
  42     memset(&m, 0, sizeof(m));
  43     m.m00 = 1;
  44     m.m11 = 1;
  45
  46     gfxline_t* rect = gfxline_makerectangle(0, 0, pi->img.width, pi->img.height);
  47     output->fillbitmap(output, rect, &pi->img, &m, &cxform);
  48     gfxline_free(rect);
  49 }
  50
  51 void imagepage_rendersection(gfxpage_t*page, gfxdevice_t*output, gfxcoord_t x, gfxcoord_t y, gfxcoord_t _x1, gfxcoord_t _y1, gfxcoord_t _x2, gfxcoord_t _y2)
  52 {
  53     image_page_internal_t*i = (image_page_internal_t*)page->internal;
  54     image_doc_internal_t*pi = (image_doc_internal_t*)page->parent->internal;
  55
  56     gfxcxform_t cxform;
  57     memset(&cxform, 0, sizeof(cxform));
  58     cxform.rr = 1;
  59     cxform.gg = 1;
  60     cxform.bb = 1;
  61     cxform.aa = 1;
  62
  63     gfxmatrix_t m;
  64     memset(&m, 0, sizeof(m));
  65     m.m00 = 1;
  66     m.m11 = 1;
  67     m.tx = x;
  68     m.ty = y;
  69
  70     gfxline_t* rect = gfxline_makerectangle(0, 0, pi->img.width, pi->img.height);
  71     gfxline_t* rect2 = gfxline_makerectangle(_x1, _y1, _x2, _y2);
  72
  73     output->startclip(output, rect2);
  74     output->fillbitmap(output, rect, &pi->img, &m, &cxform);
  75     output->endclip(output);
  76     gfxline_free(rect);
  77     gfxline_free(rect2);
  78 }
  79
  80 void image_doc_destroy(gfxdocument_t*gfx)
  81 {
  82     image_doc_internal_t*i= (image_doc_internal_t*)gfx->internal;
  83
  84     free(i->img.data);i->img.data = 0;
  85
  86     free(gfx->internal);gfx->internal=0;
  87     free(gfx);gfx=0;
  88 }
  89
  90 void image_doc_setparameter(gfxdocument_t*gfx, const char*name, const char*value)
  91 {
  92     image_doc_internal_t*i= (image_doc_internal_t*)gfx->internal;
  93 }
  94
  95 gfxpage_t* image_doc_getpage(gfxdocument_t*doc, int page)
  96 {
  97     image_doc_internal_t*di= (image_doc_internal_t*)doc->internal;
  98     if(page != 1)
  99         return 0;
 100
 101     gfxpage_t* image_page = (gfxpage_t*)malloc(sizeof(gfxpage_t));
 102     image_page_internal_t*pi= (image_page_internal_t*)malloc(sizeof(image_page_internal_t));
 103     memset(pi, 0, sizeof(image_page_internal_t));
 104
 105     image_page->internal = pi;
 106     image_page->destroy = imagepage_destroy;
 107     image_page->render = imagepage_render;
 108     image_page->rendersection = imagepage_rendersection;
 109     image_page->width = di->img.width;
 110     image_page->height = di->img.height;
 111     image_page->parent = doc;
 112     image_page->nr = page;
 113     return image_page;
 114 }
 115
 116 static void image_setparameter(gfxsource_t*src, const char*name, const char*value)
 117 {
 118     msg("<verbose> (gfxsource_image) setting parameter %s to \"%s\"", name, value);
 119 }
 120
 121 static gfxdocument_t*image_open(gfxsource_t*src, const char*filename)
 122 {
 123     gfxdocument_t*image_doc = (gfxdocument_t*)malloc(sizeof(gfxdocument_t));
 124     memset(image_doc, 0, sizeof(gfxdocument_t));
 125     image_doc_internal_t*i= (image_doc_internal_t*)malloc(sizeof(image_doc_internal_t));
 126     memset(i, 0, sizeof(image_doc_internal_t));
 127
 128     gfxcolor_t*data = 0;
 129     unsigned width = 0;
 130     unsigned height = 0;
 131
 132     if(!getPNG(filename, &width, &height, (unsigned char**)&data)) {
 133         if(!jpeg_load(filename, (unsigned char**)&data, &width, &height)) {
 134             msg("<error> Couldn't load image %s", filename);
 135             return 0;
 136         }
 137     }
 138     i->img.data = data;
 139     i->img.width = width;
 140     i->img.height = height;
 141
 142     image_doc->num_pages = 1;
 143     image_doc->internal = i;
 144     image_doc->get = 0;
 145     image_doc->destroy = image_doc_destroy;
 146     image_doc->setparameter = image_doc_setparameter;
 147     image_doc->getpage = image_doc_getpage;
 148
 149     return image_doc;
 150 }
 151
 152 gfxsource_t*gfxsource_image_create()
 153 {
 154     gfxsource_t*src = (gfxsource_t*)malloc(sizeof(gfxsource_t));
 155     memset(src, 0, sizeof(gfxsource_t));
 156     src->setparameter = image_setparameter;
 157     src->open = image_open;
 158     return src;
 159 }
 160