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Began with ddjvu render method

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This commit is contained in:
Moritz Lipp 2010-12-26 00:47:42 +01:00
parent ecef579ce0
commit c0cfa407ca
1 changed files with 50 additions and 1 deletions
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51
ft/djvu/djvu.c
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@ -1,8 +1,10 @@
/* See LICENSE file for license and copyright information */
#include <stdlib.h>
#include <cairo.h>
#include "djvu.h"
#include "../../zathura.h"
bool
djvu_document_open(zathura_document_t* document)
@ -189,5 +191,52 @@ djvu_page_form_fields_get(zathura_page_t* page)
cairo_surface_t*
djvu_page_render(zathura_page_t* page)
{
return NULL;
if(Zathura.document || !page || !page->data || !page->document) {
return NULL;
}
/* calculate sizes */
unsigned int page_width = page->width;
unsigned int page_height = page->height;
/* init ddjvu render data */
ddjvu_rect_t rrect = { 0, 0, page_width, page_height };
ddjvu_rect_t prect = { 0, 0, page_width, page_height };
ddjvu_page_rotation_t rotation = DDJVU_ROTATE_0;
switch(Zathura.document->rotate) {
case 90:
rotation = DDJVU_ROTATE_90;
break;
case 180:
rotation = DDJVU_ROTATE_180;
break;
case 270:
rotation = DDJVU_ROTATE_270;
break;
}
djvu_document_t* djvu_document = (djvu_document_t*) page->document->data;
/* create cairo data */
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
page->width, page->height);
if(!surface) {
return NULL;
}
int rowsize = cairo_image_surface_get_stride(surface);
char* data = (char*) cairo_image_surface_get_data(surface);
/* render */
ddjvu_page_set_rotation(page->data, rotation);
ddjvu_page_render(page->data, DDJVU_RENDER_COLOR, &prect, &rrect,
djvu_document->format, rowsize, data);
cairo_surface_mark_dirty(surface);
return surface;
}