Attachment 6278 Details for Bug 7571 – Demonstrating problem with fallback resolution and alpha blends

Demonstrating problem with fallback resolution and alpha blends

tst.c (text/plain), 1.55 KB, created by Paul Sephton on 2006-07-19 15:41:14 UTC

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Creator: Paul Sephton

Created: 2006-07-19 15:41:14 UTC

Size: 1.55 KB

patch

obsolete

>#include <cairo.h>
>#include <cairo-features.h>
>#ifdef CAIRO_HAS_PS_SURFACE
># include <cairo-ps.h>
>#endif
>
>int main(int a_argc, char *a_argv[])
>{
>  cairo_t *cr;
>  int    dx = 140, dy = 100;        // width, height
>  double l_xofs = 10, l_yofs = 10;  // offset from edge
>
>  cairo_surface_t *l_surface = cairo_ps_surface_create("test.ps",  dx, dy);
>
>  if (!l_surface) return -1;
>
>  // Set up surface
>  cairo_surface_set_fallback_resolution(l_surface, 300, 300);
>  cairo_surface_set_device_offset(l_surface, l_xofs, l_yofs);
>  
>  cr = cairo_create(l_surface);           // create cairo context
>
>  dx -= 2*l_xofs; dy -= 2*l_yofs;         // adjust width & height
>  
>  cairo_rectangle(cr, 0, 0, dx, dy);      // Draw a rectangle
>
>  cairo_set_source_rgba(cr, 1,.8,.2, .8); // set src colour : this fails
>//  cairo_set_source_rgb(cr, 1,.8,.2);    // set src colour : this works
>
>  cairo_fill_preserve(cr);                // fill, preserving path
>  
>  cairo_move_to(cr, 0, 0);                // draw a cross between corners
>  cairo_line_to(cr, dx, dy);
>  cairo_move_to(cr, dx, 0);
>  cairo_line_to(cr, 0, dy);
>  
>  cairo_set_source_rgb(cr, 0,0,0);        // set colour black
>  cairo_stroke(cr);                       // draw the cross
>  
>  cairo_move_to(cr, dx/2, dy/2);          // go to center of cross
>  cairo_show_text(cr, "Testing");         // show some text
>  
>  cairo_show_page(cr);                    // output page
>  cairo_surface_finish(l_surface);        // complete the postscript
>  cairo_destroy(cr);                      // and clean up
>  cairo_surface_destroy(l_surface);
>  return 0;
>}

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Attachments on bug 7571: 6278 | 6279 | 6280

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