Zoom value added

.gitignore

@@ -93,4 +93,5 @@ tags
 # End of https://www.toptal.com/developers/gitignore/api/vim,c,linux
 
 main
-build
+build/
+assets2/

src/grid.c

@@ -2,7 +2,7 @@
 
 int gridHelper(SDL_Rect* rect, int index, SDL_Rect screen, int zoom, int page){
 	rect->y = 0;
-	rect->x = screen.w/20 * index;	
+	rect->x = screen.w/10 * index * zoom / 10;	
 
 	//printf("index %i -- x = %i | y = %i | w = %i | h = %i\n", index, rect->x, rect->y, rect->w, rect->h);
 }

src/main.c

@@ -75,6 +75,9 @@ int main(int argc, char* args[]) {
 
 	SDL_Rect thumbs_container = {0, 0, SCREEN_WIDTH, SCREEN_HEIGHT};
 	SDL_Rect thumbs_rect = {40, 40, 40, 40};
+	int min_zoom = 1, max_zoom = 100;
+	int zoom = 25;
+
 
 	for(int i = 0; i < nfiles; i++){
 		gridHelper(&thumbs_rect, i, thumbs_container, 1, 0);
@@ -89,6 +92,20 @@ int main(int argc, char* args[]) {
 			if(e.type == SDL_QUIT){
 				quit = true;
 			}
+			if(e.type == SDL_MOUSEWHEEL){
+				if(e.wheel.y > 0){ // scroll up
+					if(zoom < max_zoom){
+						zoom++;
+						printf("zoom = %i\n", zoom);
+					}
+        			}
+        			else if(e.wheel.y < 0){ // scroll down
+					if(zoom > min_zoom){
+						zoom--;
+						printf("zoom = %i\n", zoom);
+					}
+        			}
+			}
 		}
 		if(currentKeyStates[SDL_SCANCODE_ESCAPE]){
 			return 0;
@@ -101,7 +118,7 @@ int main(int argc, char* args[]) {
 		//thumbs_rect.x = 0;
 		//thumbs_rect.y = 0;
 		for(int i = 0; i < nfiles; i++){
-			gridHelper(&thumbs_rect, i, thumbs_container, 1, 0);
+			gridHelper(&thumbs_rect, i, thumbs_container, zoom, 0);
 			SDL_RenderCopy(renderer, thumbs[i], NULL, &thumbs_rect);
 		}