Attachment 16307 Details for Bug 15797 – test program

test program

test.c (text/plain), 1.60 KB, created by Paolo Bonzini on 2008-05-02 04:02:02 UTC

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Creator: Paolo Bonzini

Created: 2008-05-02 04:02:02 UTC

Size: 1.60 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <cairo.h>
>#include <cairo-quartz.h>
>
>/* #undef CAIRO_HAS_QUARTZ_SURFACE */
>
>cairo_surface_t *
>create_surface (int width, int height, int channels)
>{
>#ifdef CAIRO_HAS_QUARTZ_SURFACE
>  return cairo_quartz_surface_create (CAIRO_FORMAT_ARGB32, width, height);
>#else
>  /* create cairo-surface/context to act as Open_gL-texture source */
>  unsigned char *buffer =
>    calloc (channels * width * height, sizeof (unsigned char));
>
>  return cairo_image_surface_create_for_data (buffer, CAIRO_FORMAT_ARGB32,
>					      width, height, channels * width);
>#endif
>}
>
>void
>destroy_surface (cairo_surface_t *surface)
>{
>#ifndef CAIRO_HAS_QUARTZ_SURFACE
>  free (cairo_image_surface_get_data (surface));
>#endif
>  cairo_surface_destroy (surface);
>}
>
>void
>render (cairo_t *ctx, cairo_pattern_t *gradient)
>{
>  cairo_save (ctx);
>  cairo_set_operator (ctx, CAIRO_OPERATOR_OVER);
>  cairo_set_source (ctx, gradient);
>  cairo_paint (ctx);
>  cairo_restore (ctx);
>  cairo_surface_flush (cairo_get_target (ctx));
>}
>
>#define WIDTH	256
>#define HEIGHT	256
>
>int
>main ()
>{
>  cairo_surface_t *surface = create_surface (WIDTH, HEIGHT, 4);
>  cairo_t *ctx = cairo_create (surface);
>  cairo_pattern_t *gradient = cairo_pattern_create_linear (0, 1, 1, 0);
>
>  cairo_pattern_add_color_stop_rgb (gradient, 0, 1, 0, 0);
>  cairo_pattern_add_color_stop_rgb (gradient, 0.5, 0, 1, 0);
>  cairo_pattern_add_color_stop_rgb (gradient, 1, 0, 0, 1);
>
>  cairo_scale (ctx, WIDTH, HEIGHT);
>  render (ctx, gradient);
>  render (ctx, gradient);
>  cairo_surface_write_to_png (surface, "frame.png");
>  cairo_destroy (ctx);
>  destroy_surface (surface);
>}

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Attachments on bug 15797: 16307

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