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rotate in render

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This commit is contained in:
Sebastian Ramacher 2011-09-01 19:18:29 +02:00
parent a6596fb908
commit 30dd00937b
1 changed files with 36 additions and 2 deletions
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38
render.c
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@ -214,9 +214,43 @@ render(zathura_t* zathura, zathura_page_t* page)
}
}
/* rotate */
unsigned int width = page_width;
unsigned int height = page_height;
if (page->document->rotate == 90 || page->document->rotate == 270) {
width = page_height;
height = page_width;
}
cairo_surface_t* final_surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height);
cairo_t* cairo = cairo_create(final_surface);
switch(page->document->rotate)
{
case 90:
cairo_translate(cairo, width, 0);
break;
case 180:
cairo_translate(cairo, width, height);
break;
case 270:
cairo_translate(cairo, 0, height);
break;
}
if (page->document->rotate != 0) {
cairo_rotate(cairo, page->document->rotate * G_PI / 180.0);
}
cairo_set_source_surface(cairo, surface, 0, 0);
cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
cairo_paint(cairo);
cairo_destroy(cairo);
cairo_surface_destroy(surface);
/* draw to gtk widget */
page->surface = surface;
gtk_widget_set_size_request(page->drawing_area, page_width, page_height);
page->surface = final_surface;
gtk_widget_set_size_request(page->drawing_area, width, height);
gtk_widget_queue_draw(page->drawing_area);
zathura_image_buffer_free(image_buffer);