forked from KolibriOS/kolibrios
102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
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/* Written by turbocat2001 (Logaev Maxim) */
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <clayer/libimg.h>
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#include <sys/ksys.h>
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#define NEW_IMG_H 128
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#define NEW_IMG_W 128
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#define IMG_H 256
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#define IMG_W 256
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Image *image_blend; // Create image struct
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ksys_colors_table_t sys_color_table; // Create system colors table
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void* load_img(char* fname, uint32_t* read_sz){ // Image file upload function
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FILE *f = fopen(fname, "rb");
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if (!f) {
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printf("Can't open file: %s\n", fname);
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return NULL;
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}
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if (fseek(f, 0, SEEK_END)) {
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printf("Can't SEEK_END file: %s\n", fname);
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return NULL;
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}
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int filesize = ftell(f);
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rewind(f);
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void* fdata = malloc(filesize);
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if(!fdata) {
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printf("No memory for file %s\n", fname);
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return NULL;
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}
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*read_sz = fread(fdata, 1, filesize, f);
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if (ferror(f)) {
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printf("Error reading file %s\n", fname);
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return NULL;
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}
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fclose(f);
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return fdata;
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}
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void draw_gui(){
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_ksys_start_draw();
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_ksys_create_window(10, 40, (IMG_W+NEW_IMG_W)+50, IMG_H+50, "Libimg", sys_color_table.work_area, 0x34);
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img_draw(image_blend, 10, 10, IMG_W*2, IMG_H , 0, 0); // Draw blended image to window
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_ksys_end_draw();
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}
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int main(){
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if (kolibri_libimg_init() == -1){
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printf("Error loading lib_img.obj\n");
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exit(0);
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}
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_ksys_get_system_colors(&sys_color_table); // Get system colors theme
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_ksys_set_event_mask(0xC0000027);
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uint32_t img_size;
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void *file_data = load_img("logo.png", &img_size); // Get RAW data and size
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if(!file_data){
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return 1;
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}
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Image* image = img_decode(file_data, img_size, 0); // Decode RAW data to Image data
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if (image->Type != IMAGE_BPP32) {
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image = img_convert(image, NULL, IMAGE_BPP32, 0, 0); // Convert image to format BPP32
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if (!image) {
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printf("Сonvert error!: \n");
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return 1;
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}
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}
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image_blend = img_create(IMG_W+NEW_IMG_W, IMG_H, IMAGE_BPP32); // Create an empty layer
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img_fill_color(image_blend, IMG_W+NEW_IMG_W, IMG_H, sys_color_table.work_area); // Fill the layer with one color
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img_blend(image_blend, image, 0, 0, 0, 0, IMG_W, IMG_H); // Blending images to display the alpha channel.
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/* Reduce image size from 256x256 to 128x128 */
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image = img_scale(image, 0, 0, IMG_W, IMG_H, NULL, LIBIMG_SCALE_STRETCH , LIBIMG_INTER_BILINEAR, NEW_IMG_W, NEW_IMG_H);
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img_blend(image_blend, image, 256, 0, 0, 0, NEW_IMG_W, NEW_IMG_H);
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img_destroy(image); // Destroy image structure
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free(file_data); // Free allocated file_data buffer
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/* Main event loop */
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while (1) {
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switch(_ksys_get_event()){
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case KSYS_EVENT_REDRAW:
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draw_gui();
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break;
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case KSYS_EVENT_BUTTON:
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if (_ksys_get_button()==1){
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return 0;
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}
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break;
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}
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}
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return 0;
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}
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