Attachment 22897 Details for Bug 59100

pixbuftest.c

pixbuftest.c (text/plain), 2.53 KB, created by Ludwig Nussel on 2004-08-25 17:30:50 UTC

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Creator: Ludwig Nussel

Created: 2004-08-25 17:30:50 UTC

Size: 2.53 KB

patch

obsolete

>#if 0
>#
># run me with bash to compile
>#
>if [ "$1" = 1 ]; then
>    set -- gcc -Wall -W -g -O0 -o pixbuftest pixbuftest.c `gdk-pixbuf-config --cflags --libs`
>else
>    set -- gcc -Wall -W -g -O0  -o pixbuftest pixbuftest.c `pkg-config gtk+-2.0 --cflags --libs`
>fi
>echo "$@"
>exec "$@"
>exit 1
>#endif
>
>#include <stdio.h>
>#include <string.h>
>#include <gtk/gtk.h>
>#include <gdk-pixbuf/gdk-pixbuf.h>
>
>#if (GLIB_MAJOR_VERSION > 1)
>#define USE_GTK2
>#endif
>
>#define xqf_warning(fmt, rem...) do { fprintf(stderr, fmt, ##rem); fputs("\n", stderr); } while(0)
>
>guchar* rgbbuf = NULL;
>
>void pixbuf2rgbbuf(GdkPixbuf* pixbuf)
>{
>	guchar* buf;
>	guchar* pos;
>	unsigned w;
>	unsigned h;
>	unsigned x;
>	unsigned y;
>	unsigned c;
>	unsigned rs;
>
>	if(!pixbuf)
>	{
>	    xqf_warning("NULL");
>	    return;
>	}
>
>	w = gdk_pixbuf_get_width (pixbuf);
>	h = gdk_pixbuf_get_height (pixbuf);
>	c = gdk_pixbuf_get_n_channels (pixbuf);
>	rs = gdk_pixbuf_get_rowstride (pixbuf);
>
>	printf("%dx%d@%d +%d\n", w, h, c*8, rs-w*c);
>
>	if(c != 3 && c != 4)
>	{
>	    xqf_warning("need 24 or 32 bit");
>	    return;
>	}
>
>	pos = rgbbuf = g_new0(guchar, h*w*c);
>	buf = gdk_pixbuf_get_pixels (pixbuf);
>	if(!buf) xqf_warning("NULL");
>	for(y=0; y < h; ++y)
>	{
>	    for(x=0; x < w; ++x, pos+=3, buf+=c)
>	    {
>		memcpy(pos, buf, 3);
>	    }
>	    if(x*c<rs)
>	    {
>		buf += (rs - x*c);
>	    }
>	}
>}
>
>int main (int argc, char* argv[])
>{
>    GtkWidget* main_window;
>
>    gtk_init (&argc, &argv);
>
>    if(argc < 2)
>    {
>	puts("need file");
>	return 1;
>    }
>
>    main_window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
>    gtk_signal_connect (GTK_OBJECT (main_window), "destroy",
>		  GTK_SIGNAL_FUNC (gtk_main_quit), NULL);
>
>    {
>	unsigned w;
>	unsigned h;
>	unsigned y;
>	unsigned c;
>	GtkWidget* preview;
>#ifdef USE_GTK2
>	GError* err = NULL;
>	GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file(argv[1], &err);
>	if(err)
>	{
>	    xqf_warning("NULL: %s", err->message);
>	    g_error_free(err);
>	    return 1;
>	}
>#else
>	GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file(argv[1]);
>#endif
>	if(!pixbuf)
>	{
>	    xqf_warning("NULL");
>	    return 1;
>	}
>
>	w = gdk_pixbuf_get_width (pixbuf);
>	h = gdk_pixbuf_get_height (pixbuf);
>	c = gdk_pixbuf_get_n_channels (pixbuf);
>
>	preview = gtk_preview_new(GTK_PREVIEW_COLOR);
>	gtk_preview_size(GTK_PREVIEW(preview), w, h);
>
>	pixbuf2rgbbuf(pixbuf);
>	if(!rgbbuf) return 1;
>	for(y=0; y < h; ++y)
>	{
>	    gtk_preview_draw_row(GTK_PREVIEW(preview), rgbbuf+y*w*c, 0, y, w);
>	}
>	gtk_container_add (GTK_CONTAINER (main_window), preview);
>	gtk_widget_show(preview);
>    }
>
>    gtk_widget_show(main_window);
>
>    gtk_main ();
>
>    return 0;
>}
>
>// vim: sw=4

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Attachments on bug 59100: 22861 | 22897 | 22999 | 23166 | 23191