Attachment 135656 Details for Bug 103840 – Example code to generate bug

Example code to generate bug

helloCairo.c (text/x-csrc), 1.10 KB, created by Matthew Khouzam on 2017-11-22 04:13:05 UTC

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Filename:

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Creator: Matthew Khouzam

Created: 2017-11-22 04:13:05 UTC

Size: 1.10 KB

patch

obsolete

>#include <cairo.h>
>#include <gtk/gtk.h>
>
>static void do_drawing(cairo_t *);
>
>static gboolean on_draw_event(GtkWidget *widget, cairo_t *cr, 
>    gpointer user_data)
>{
>  do_drawing(cr);
>
>  return FALSE;
>}
>
>static void do_drawing(cairo_t *cr)
>{
>  cairo_set_source_rgb(cr, 0, 0, 0);
>  cairo_set_line_width(cr, 0.5);
>  cairo_move_to(cr, -200000, 300);
>  cairo_line_to(cr, 200000, 0);
>  cairo_stroke(cr);    
>}
>
>int main(int argc, char *argv[])
>{
>  GtkWidget *window;
>  GtkWidget *darea;
>  
>  
>  gtk_init(&argc, &argv);
>
>  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
>
>  darea = gtk_drawing_area_new();
>  gtk_container_add(GTK_CONTAINER(window), darea);
> 
>  gtk_widget_add_events(window, GDK_BUTTON_PRESS_MASK);
>
>  g_signal_connect(G_OBJECT(darea), "draw", 
>      G_CALLBACK(on_draw_event), NULL); 
>  g_signal_connect(window, "destroy",
>      G_CALLBACK(gtk_main_quit), NULL);  
>    
>  gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
>  gtk_window_set_default_size(GTK_WINDOW(window), 500,500); 
>  gtk_window_set_title(GTK_WINDOW(window), "Lines");
>
>  gtk_widget_show_all(window);
>
>  gtk_main();
>
>  return 0;
>}

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Attachments on bug 103840: 135656 | 135657

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