9f103b13bb
http://homepage3.nifty.com/slokar/fb/w3mfb.patch.gz * w3mimg/fb/readme.txt: update * w3mimg/fb/fb.c: update * w3mimg/fb/fb.h: update * w3mimg/fb/fb_gdkpixbuf.c: update * w3mimg/fb/fb_img.c: update * w3mimg/fb/fb_img.h: update * w3mimg/fb/fb_imlib2.c: update * w3mimg/fb/fb_w3mimg.c: update * w3mimg/fb/fb_gdkpixbuf.h: deleted * w3mimg/fb/fb_imlib2.h: deleted * w3mimg/w3mimg.h (w3mimg_op): add get_image_size() * w3mimg/x11/x11_w3mimg.c: update * w3mimgdisplay.c (main): use get_image_size() * w3mimgsize.c (main): use get_image_size() From: Hiroyuki Ito <hito@crl.go.jp>
124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/* $Id: fb_gdkpixbuf.c,v 1.6 2002/07/22 16:17:32 ukai Exp $ */
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/**************************************************************************
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fb_gdkpixbuf.c 0.3 Copyright (C) 2002, hito
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**************************************************************************/
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include "fb.h"
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#include "fb_img.h"
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static void draw(FB_IMAGE * img, GdkPixbuf * pixbuf);
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static GdkPixbuf *resize_image(GdkPixbuf * pixbuf, int width, int height);
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int
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get_image_size(char *filename, int *w, int *h)
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{
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GdkPixbuf *pixbuf;
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if (filename == NULL)
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return 1;
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pixbuf = gdk_pixbuf_new_from_file(filename);
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if (pixbuf == NULL)
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return 1;
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*w = gdk_pixbuf_get_width(pixbuf);
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*h = gdk_pixbuf_get_height(pixbuf);
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gdk_pixbuf_finalize(pixbuf);
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return 0;
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}
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FB_IMAGE *
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fb_image_load(char *filename, int w, int h)
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{
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GdkPixbuf *pixbuf;
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FB_IMAGE *img;
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if (filename == NULL)
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return NULL;
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pixbuf = gdk_pixbuf_new_from_file(filename);
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if (pixbuf == NULL)
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return NULL;
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pixbuf = resize_image(pixbuf, w, h);
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if (pixbuf == NULL)
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return NULL;
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w = gdk_pixbuf_get_width(pixbuf);
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h = gdk_pixbuf_get_height(pixbuf);
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img = fb_image_new(w, h);
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if (img == NULL) {
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gdk_pixbuf_finalize(pixbuf);
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return NULL;
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}
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draw(img, pixbuf);
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gdk_pixbuf_finalize(pixbuf);
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return img;
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}
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void
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draw(FB_IMAGE * img, GdkPixbuf * pixbuf)
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{
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int i, j, r, g, b, offset, bpp, rowstride;
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guchar *pixels;
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gboolean alpha;
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if (img == NULL || pixbuf == NULL)
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return;
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rowstride = gdk_pixbuf_get_rowstride(pixbuf);
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pixels = gdk_pixbuf_get_pixels(pixbuf);
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alpha = gdk_pixbuf_get_has_alpha(pixbuf);
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bpp = rowstride / img->width;
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for (j = 0; j < img->height; j++) {
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offset = j * rowstride;
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for (i = 0; i < img->width; i++, offset += bpp) {
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r = pixels[offset];
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g = pixels[offset + 1];
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b = pixels[offset + 2];
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if (alpha && pixels[offset + 3] == 0)
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fb_image_pset(img, i, j, bg_r, bg_g, bg_b);
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else
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fb_image_pset(img, i, j, r, g, b);
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}
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}
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return;
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}
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static GdkPixbuf *
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resize_image(GdkPixbuf * pixbuf, int width, int height)
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{
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GdkPixbuf * resized_pixbuf;
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int w, h;
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if (pixbuf == NULL)
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return NULL;
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w = gdk_pixbuf_get_width(pixbuf);
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h = gdk_pixbuf_get_height(pixbuf);
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if (width < 1 || height < 1)
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return pixbuf;
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if (w == width && h == height)
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return pixbuf;
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resized_pixbuf =
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gdk_pixbuf_scale_simple(pixbuf, width, height, GDK_INTERP_HYPER);
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gdk_pixbuf_finalize(pixbuf);
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if (resized_pixbuf == NULL)
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return NULL;
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return resized_pixbuf;
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}
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