138 lines
2.7 KiB
C
138 lines
2.7 KiB
C
/* $Id: fb_gdkpixbuf.c,v 1.5 2002/07/18 15:12:06 ukai Exp $ */
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/**************************************************************************
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fb_gdkpixbuf.c 0.2 Copyright (C) 2002, hito
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**************************************************************************/
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#include "fb.h"
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#include "fb_img.h"
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static void set_prm(IMAGE * img);
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IMAGE *
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fb_load_image(char *filename, int w, int h)
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{
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GdkPixbuf *pixbuf;
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IMAGE *img;
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if (filename == NULL)
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return NULL;
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img = malloc(sizeof(*img));
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if (img == 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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free(img);
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return NULL;
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}
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img->pixbuf = pixbuf;
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set_prm(img);
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fb_resize_image(img, w, h);
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return img;
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}
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int
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fb_draw_image(IMAGE * img, int x, int y, int sx, int sy, int width, int height)
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{
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int i, j, r, g, b, offset, bpp;
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if (img == NULL)
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return 1;
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bpp = img->rowstride / img->width;
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for (j = sy; j < sy + height && j < img->height; j++) {
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offset = j * img->rowstride + bpp * sx;
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for (i = sx; i < sx + width && i < img->width; i++, offset += bpp) {
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r = img->pixels[offset];
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g = img->pixels[offset + 1];
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b = img->pixels[offset + 2];
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if (img->alpha && img->pixels[offset + 3] == 0)
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fb_pset(i + x - sx, j + y - sy, bg_r, bg_g, bg_b);
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else
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fb_pset(i + x - sx, j + y - sy, r, g, b);
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}
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}
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return 0;
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}
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int
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fb_resize_image(IMAGE * img, int width, int height)
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{
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GdkPixbuf *pixbuf;
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if (width < 1 || height < 1 || img == NULL)
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return 1;
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if (width == img->width && height == img->height)
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return 0;
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pixbuf =
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gdk_pixbuf_scale_simple(img->pixbuf, width, height, GDK_INTERP_HYPER);
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if (pixbuf == NULL)
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return 1;
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gdk_pixbuf_finalize(img->pixbuf);
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img->pixbuf = pixbuf;
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set_prm(img);
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return 0;
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}
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void
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fb_free_image(IMAGE * img)
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{
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if (img == NULL)
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return;
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gdk_pixbuf_finalize(img->pixbuf);
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free(img);
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}
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IMAGE *
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fb_dup_image(IMAGE * img)
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{
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GdkPixbuf *pixbuf;
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IMAGE *new_img;
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if (img == NULL)
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return NULL;
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new_img = malloc(sizeof(*img));
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if (new_img == NULL)
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return NULL;
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pixbuf = gdk_pixbuf_copy(img->pixbuf);
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if (pixbuf == NULL) {
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free(new_img);
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return NULL;
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}
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new_img->pixbuf = pixbuf;
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set_prm(new_img);
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return new_img;
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}
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int
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fb_rotate_image(IMAGE * img, int angle)
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{
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return 1;
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}
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static void
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set_prm(IMAGE * img)
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{
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GdkPixbuf *pixbuf;
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if (img == NULL)
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return;
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pixbuf = img->pixbuf;
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img->pixels = gdk_pixbuf_get_pixels(pixbuf);
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img->width = gdk_pixbuf_get_width(pixbuf);
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img->height = gdk_pixbuf_get_height(pixbuf);
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img->alpha = gdk_pixbuf_get_has_alpha(pixbuf);
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img->rowstride = gdk_pixbuf_get_rowstride(pixbuf);
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}
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