/* Written by turbocat2001 (Logaev Maxim) */
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <kos32sys.h>
#include <kolibri_gui.h>
#include <kolibri_libimg.h>
#define NEW_IMG_H 128
#define NEW_IMG_W 128
#define IMG_H 256
#define IMG_W 256
Image *image_blend; // Create image struct
struct kolibri_system_colors sys_color_table; // Create system colors table
char* load_img(char* fname, int32_t* read_sz){ // Image file upload function
FILE
*f
= fopen(fname
, "rb");
if (!f) {
printf("Can't open file: %s\n", fname
);
}
if (fseek(f
, 0, SEEK_END
)) {
printf("Can't SEEK_END file: %s\n", fname
);
}
char* fdata
= malloc(filesize
);
if(!fdata) {
printf("No memory for file %s\n", fname
);
}
*read_sz
= fread(fdata
, 1, filesize
, f
);
printf("Error reading file %s\n", fname
);
}
return fdata;
}
void DrawGUI(){
begin_draw();
sys_create_window(10, 40, (IMG_W+NEW_IMG_W)+50, IMG_H+50, "Libimg", sys_color_table.work_area, 0x34);
img_draw(image_blend, 10, 10, IMG_W*2, IMG_H , 0, 0); // Draw blended image to window
end_draw();
}
int main(){
if (kolibri_libimg_init() == -1){
printf("Error loading lib_img.obj\n");
}
get_system_colors(&sys_color_table); // Get system colors theme
uint32_t img_size;
void *file_data = load_img("logo.png", &img_size); // Get RAW data and size
Image* image = img_decode(file_data, img_size, 0); // Decode RAW data to Image data
if (image->Type != IMAGE_BPP32) {
image = img_convert(image, NULL, IMAGE_BPP32, 0, 0); // Convert image to format BPP32
if (!image) {
}
}
image_blend = img_create(IMG_W+NEW_IMG_W, IMG_H, IMAGE_BPP32); // Create an empty layer
img_fill_color(image_blend, IMG_W+NEW_IMG_W, IMG_H, sys_color_table.work_area); // Fill the layer with one color
img_blend(image_blend, image, 0, 0, 0, 0, IMG_W, IMG_H); // Blending images to display the alpha channel.
/* Reduce image size from 256x256 to 128x128 */
image = img_scale(image, 0, 0, IMG_W, IMG_H, NULL, LIBIMG_SCALE_STRETCH , LIBIMG_INTER_BILINEAR, NEW_IMG_W, NEW_IMG_H);
img_blend(image_blend, image, 256, 0, 0, 0, NEW_IMG_W, NEW_IMG_H);
img_destroy(image); // Destroy image structure
free(file_data
); // Free allocated file_data buffer
set_wanted_events_mask(0xC0000027);
/* Main event loop */
while (1) {
switch(get_os_event()){
case KOLIBRI_EVENT_REDRAW:
DrawGUI();
break;
case KOLIBRI_EVENT_BUTTON:
if (get_os_button() == 1){
return 0;
}
break;
}
}
return 0;
}