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fb_imlib2.c (2566B)

      1 /* $Id$ */
      2 /**************************************************************************
      3                 fb_imlib2.c 0.3 Copyright (C) 2002, hito
      4  **************************************************************************/
      5 
      6 #include <X11/Xlib.h>
      7 #include <Imlib2.h>
      8 #include "fb.h"
      9 #include "fb_img.h"
     10 
     11 static void draw(FB_IMAGE * img, Imlib_Image image);
     12 static Imlib_Image resize_image(Imlib_Image image, int width, int height);
     13 
     14 void
     15 fb_image_init()
     16 {
     17     return;
     18 }
     19 
     20 int
     21 get_image_size(char *filename, int *w, int *h)
     22 {
     23     Imlib_Image image;
     24 
     25     if (filename == NULL)
     26 	return 1;
     27 
     28     image = imlib_load_image(filename);
     29     if (image == NULL)
     30 	return 1;
     31 
     32     imlib_context_set_image(image);
     33     *w = imlib_image_get_width();
     34     *h = imlib_image_get_height();
     35     imlib_free_image();
     36 
     37     return 0;
     38 }
     39 
     40 FB_IMAGE **
     41 fb_image_load(char *filename, int w, int h, int n)
     42 {
     43     Imlib_Image image;
     44     FB_IMAGE **frame;
     45 
     46     if (filename == NULL)
     47 	return NULL;
     48 
     49     image = imlib_load_image(filename);
     50     if (image == NULL)
     51 	return NULL;
     52 
     53     image = resize_image(image, w, h);
     54     if (image == NULL)
     55 	return NULL;
     56 
     57     imlib_context_set_image(image);
     58 
     59     w = imlib_image_get_width();
     60     h = imlib_image_get_height();
     61 
     62     frame = fb_frame_new(w, h, 1);
     63 
     64     if (frame == NULL) {
     65 	imlib_free_image();
     66 	return NULL;
     67     }
     68 
     69     draw(frame[0], image);
     70 
     71     imlib_free_image();
     72 
     73     return frame;
     74 }
     75 
     76 static void
     77 draw(FB_IMAGE * img, Imlib_Image image)
     78 {
     79     int i, j, r, g, b, a = 0, offset;
     80     DATA32 *data;
     81 
     82     if (img == NULL)
     83 	return;
     84 
     85     imlib_context_set_image(image);
     86     data = imlib_image_get_data_for_reading_only();
     87 
     88     for (j = 0; j < img->height; j++) {
     89 	offset = img->width * j;
     90 	for (i = 0; i < img->width; i++) {
     91 	    a = (data[offset + i] >> 24) & 0x000000ff;
     92 	    r = (data[offset + i] >> 16) & 0x000000ff;
     93 	    g = (data[offset + i] >> 8) & 0x000000ff;
     94 	    b = (data[offset + i]) & 0x000000ff;
     95 
     96 	    if (a == 0) {
     97 		fb_image_pset(img, i, j, bg_r, bg_g, bg_b);
     98 	    }
     99 	    else {
    100 		fb_image_pset(img, i, j, r, g, b);
    101 	    }
    102 	}
    103     }
    104     return;
    105 }
    106 
    107 static Imlib_Image
    108 resize_image(Imlib_Image image, int width, int height)
    109 {
    110     Imlib_Image resized_image;
    111     int w, h;
    112 
    113     if (image == NULL)
    114 	return NULL;
    115 
    116     imlib_context_set_image(image);
    117     w = imlib_image_get_width();
    118     h = imlib_image_get_height();
    119 
    120     if (width < 1 || height < 1)
    121 	return image;
    122 
    123     if (w == width && h == height)
    124 	return image;
    125 
    126     resized_image =
    127 	imlib_create_cropped_scaled_image(0, 0, w, h, width, height);
    128 
    129     imlib_free_image();
    130 
    131     return resized_image;
    132 }