163 lines
3.0 KiB
C
163 lines
3.0 KiB
C
/* $Id: fb_imlib2.c,v 1.5 2002/07/18 15:14:21 ukai Exp $ */
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/**************************************************************************
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fb_imlib2.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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Imlib_Image image;
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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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image = imlib_load_image(filename);
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if (image == NULL) {
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free(img);
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return NULL;
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}
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imlib_context_set_image(image);
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img->image = image;
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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, a = 0, offset;
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if (img == NULL)
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return 1;
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for (j = sy; j < sy + height && j < img->height; j++) {
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offset = j * img->width;
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for (i = sx; i < sx + width && i < img->width; i++) {
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a = (img->data[offset + i] >> 24) & 0x000000ff;
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r = (img->data[offset + i] >> 16) & 0x000000ff;
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g = (img->data[offset + i] >> 8) & 0x000000ff;
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b = (img->data[offset + i]) & 0x000000ff;
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if (a == 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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Imlib_Image image;
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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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image =
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imlib_create_cropped_scaled_image(0, 0, img->width, img->height, width,
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height);
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if (image == NULL)
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return 1;
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imlib_context_set_image(img->image);
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imlib_free_image();
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img->image = image;
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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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imlib_context_set_image(img->image);
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imlib_free_image();
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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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Imlib_Image image;
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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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imlib_context_set_image(img->image);
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image = imlib_clone_image();
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if (image == NULL) {
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free(new_img);
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return NULL;
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}
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new_img->image = image;
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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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int orientation;
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if (img == NULL)
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return 1;
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imlib_context_set_image(img->image);
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if (angle == 90) {
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orientation = 1;
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}
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else if (angle == -90) {
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orientation = 3;
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}
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else {
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return 1;
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}
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imlib_image_orientate(orientation);
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set_prm(img);
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return 0;
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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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if (img == NULL)
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return;
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imlib_context_set_image(img->image);
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img->data = imlib_image_get_data_for_reading_only();
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img->width = imlib_image_get_width();
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img->height = imlib_image_get_height();
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}
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