Attachment 47775 Details for Bug 38117 – Example source code

Example source code

cairo-glyph.c (text/x-csrc), 2.24 KB, created by Martin Simmons on 2011-06-09 08:27:40 UTC

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Description:

Filename:

MIME Type:

Creator: Martin Simmons

Created: 2011-06-09 08:27:40 UTC

Size: 2.24 KB

patch

obsolete

>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <math.h>
>
>#include "gtk/gtk.h"
>
>static gboolean
>window_expose_event (GtkWidget *widget,
>                     GdkEventExpose *event)
>{
>  cairo_t *cr;
>  int num_glyphs;
>  cairo_glyph_t *glyphs = NULL;
>  cairo_scaled_font_t *scaled_font;
> 
>  cr = gdk_cairo_create (widget->window);
>  cairo_set_source_rgb (cr, 0, 0, 0);
>
>  cairo_set_line_width (cr, 1);
>  cairo_move_to (cr, 100.5, 0.5);
>  cairo_line_to (cr, 100.5, 300.5);
>  cairo_move_to (cr, 200.5, 0.5);
>  cairo_line_to (cr, 200.5, 300.5);
>  cairo_stroke (cr);
>
>  cairo_select_font_face (cr, "Sans",
>			  CAIRO_FONT_SLANT_NORMAL,
>			  CAIRO_FONT_WEIGHT_NORMAL);
>  cairo_set_font_size (cr, 12);
>  scaled_font = cairo_get_scaled_font (cr);
>  cairo_scaled_font_text_to_glyphs (scaled_font, 0, 0,
>				    "abc", -1,
>				    &glyphs, &num_glyphs,
>				    NULL, NULL, NULL);
>
>  cairo_translate (cr, 150, 150);
>  cairo_show_glyphs (cr, glyphs, num_glyphs);
>  cairo_translate (cr, 0.5, 20.5);
>  cairo_show_glyphs (cr, glyphs, num_glyphs);
>
>  cairo_glyph_free (glyphs);
>
>  cairo_destroy (cr);
>
>  return FALSE;
>}
>
>static gboolean
>button_press_event (GtkWidget *widget,
>                     GdkEventButton *event)
>{
>  GdkRectangle rect;
>
>  if (event->x < 100)        /* left third */
>    rect.x = 149;
>  else if (event->x < 200)   /* middle third */
>    rect.x = 150;
>  else                       /* right third */
>    rect.x = 153;
>  rect.y = 0;
>  rect.width = 300;
>  rect.height = 300;
>  printf("rect x = %d\n", rect.x);
>  gdk_window_invalidate_rect (widget->window, &rect, FALSE);
>
>  return TRUE;
>}
>
>
>int
>main (int argc, char **argv)
>{
>  GtkWidget *window;
>
>  gtk_init (&argc, &argv);
>
>  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>  gtk_widget_set_size_request (window, 300, 300);
>
>  g_signal_connect (window, "destroy",
>		    G_CALLBACK (gtk_main_quit),
>		    NULL);
>  g_signal_connect (window, "delete-event",
>		    G_CALLBACK (gtk_false),
>		    NULL);
>  g_signal_connect_after (window, "expose-event",
>			  G_CALLBACK (window_expose_event), NULL);
>
>  g_signal_connect_after (window, "button-press-event",
>			  G_CALLBACK (button_press_event), NULL);
>
>  gtk_widget_set_events (window, GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK);
>
>  gtk_widget_show_all (window);
>  gtk_main ();
>}

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Attachments on bug 38117: 47775

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