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/* $Id: fb_imlib2.c,v 1.4 2002/07/18 15:01:31 ukai Exp $ */
/**************************************************************************
fb_imlib2.c 0.2 Copyright (C) 2002, hito
**************************************************************************/
#include "fb.h"
#include "fb_img.h"
static void set_prm(IMAGE *img);
IMAGE *fb_load_image(char *filename, int w, int h)
{
Imlib_Image image;
IMAGE *img;
if(filename == NULL)
return NULL;
img = malloc(sizeof(*img));
if(img == NULL)
return NULL;
image = imlib_load_image(filename);
if(image == NULL){
free(img);
return NULL;
}
imlib_context_set_image(image);
img->image = image;
set_prm(img);
fb_resize_image(img, w, h);
return img;
}
int fb_draw_image(IMAGE *img, int x, int y, int sx, int sy, int width, int height)
{
int i, j, r, g, b, a = 0, offset;
if(img == NULL)
return 1;
for(j = sy; j < sy + height && j < img->height; j++){
offset = j * img->width;
for(i = sx; i < sx + width && i < img->width; i++){
a = (img->data[offset + i] >> 24) & 0x000000ff;
r = (img->data[offset + i] >> 16) & 0x000000ff;
g = (img->data[offset + i] >> 8) & 0x000000ff;
b = (img->data[offset + i] ) & 0x000000ff;
if(a == 0)
fb_pset(i + x - sx, j + y - sy, bg_r, bg_g, bg_b);
else
fb_pset(i + x - sx, j + y - sy, r, g, b);
}
}
return 0;
}
int fb_resize_image(IMAGE *img, int width, int height)
{
Imlib_Image image;
if(width < 1 || height < 1 || img == NULL)
return 1;
if(width == img->width && height == img->height)
return 0;
image = imlib_create_cropped_scaled_image(0, 0, img->width, img->height, width, height);
if(image == NULL)
return 1;
imlib_context_set_image(img->image);
imlib_free_image();
img->image = image;
set_prm(img);
return 0;
}
void fb_free_image(IMAGE *img)
{
if(img == NULL)
return;
imlib_context_set_image(img->image);
imlib_free_image();
free(img);
}
IMAGE *fb_dup_image(IMAGE *img)
{
Imlib_Image image;
IMAGE *new_img;
if(img == NULL)
return NULL;
new_img = malloc(sizeof(*img));
if(new_img == NULL)
return NULL;
imlib_context_set_image(img->image);
image = imlib_clone_image();
if(image == NULL){
free(new_img);
return NULL;
}
new_img->image = image;
set_prm(new_img);
return new_img;
}
int fb_rotate_image(IMAGE *img, int angle)
{
int orientation;
if(img == NULL)
return 1;
imlib_context_set_image(img->image);
if(angle == 90){
orientation = 1;
}else if(angle == -90){
orientation = 3;
}else{
return 1;
}
imlib_image_orientate(orientation);
set_prm(img);
return 0;
}
static void set_prm(IMAGE *img)
{
if(img == NULL)
return;
imlib_context_set_image(img->image);
img->data = imlib_image_get_data_for_reading_only();
img->width = imlib_image_get_width();
img->height = imlib_image_get_height();
}
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