@@ -25,6 +25,7 @@

  *      20250311 Fix bug because of stray CloseWindow() call.

  *               Add show using all window with right button.

  *      20250316 Add android target support.

+ *               Delay loading images if over fps deadline.

  *

  * Author: Dario Rodriguez dario@darionomono.com

  * (c) Dario Rodriguez 2025

@@ -38,6 +39,7 @@

 #include <sys/types.h>

 #include <dirent.h>

 #include <sys/stat.h>

+#include <sys/time.h>

 #include "raylib.h"

 #include "roboto_regular.c"

@@ -46,6 +48,8 @@

 #define SIMANDROID

+#define TARGETFPS 30

+

 #if defined(ANDROID) || defined(SIMANDROID)

 #define ROOTDIR "/sdcard/"

 #define DEFAULTWIDTH 2400

@@ -229,7 +233,7 @@ menubar_t *im_menubar_init(char *menus, font_t *font);

 void im_menubar_free(menubar_t *menubar);

 int im_menubar_mouse(menubar_t *menubar, Vector2 mousepos, int lmbpressed, int lmbreleased, int lmbdown, int *click_avail, char **sel_menu, char **sel_submenu);

-int im_menubar_draw(menubar_t *menubar, int windowwidth, int windowheight);

+int im_menubar_draw(menubar_t *menubar, int windowwidth, int windowheight, int *needs_nextredraw);

 body_t *im_body_init(int x, int y, font_t *font, font_t *fontbig, font_t *fonthuge, int leftsize, char *rootdir, int windowwidth, int windowheight);

 void im_body_free(body_t *body);

@@ -237,7 +241,7 @@ void im_body_free(body_t *body);

 int im_body_add(body_t *body,char *dir);

 int im_body_mouse(body_t *body, Vector2 mousepos, Vector2 wheel, int lmbpressed, int lmbreleased, int lmbdown, int *click_avail);

-int im_body_draw(body_t *body, Vector2 mousepos, int lmbdown, int rmbdown, int windowwidth, int windowheight);

+int im_body_draw(body_t *body, Vector2 mousepos, int lmbdown, int rmbdown, int windowwidth, int windowheight, int *needs_nextredraw);

 int listing_get(listing_t *listing, char *pathprefix, char *path, int flag_sort);

 void listing_freedata(listing_t *listing);

@@ -258,28 +262,47 @@ int menudata_pos2option(menudata_t *menudata, Vector2 pos);

 int *getcodepoints(int *sizecodepoints);

 int is_imagefilename(char *filename);

 Image imutil_loadimage(const char *filename);

+void imutil_fpsreset(void);

+int imutil_fpsleft(void);

 int

 main(int argc, char *argv[])

 {

         im_t *im;

-        Vector2 mousepos,wheel;

+        Vector2 mousepos,wheel,oldmousepos;

         int flag_ignorelmb;

-        int lmbpressed,lmbreleased,lmbdown,rmbdown;

+        int lmbpressed,lmbreleased,lmbdown,rmbdown,oldlmbdown,oldrmbdown;

         int click_avail;

+        int has_mousechanges;

+        int needs_nextredraw;

         char *sel_menu,*sel_submenu;

         if((im=im_init("Fichero\nAjustes\nSalir\n\nEditar\nNuevo directorio\n\nAyuda\nInformación sobre el programa\n\n",ROOTDIR))==NULL) {

                 return(1);

         }

         flag_ignorelmb=0;

+        mousepos=(Vector2) {.x=0,.y=0};

+        lmbdown=rmbdown=-1;

+        needs_nextredraw=1;

         while(!WindowShouldClose()) {

+                imutil_fpsreset();

+                oldmousepos=mousepos;

                 mousepos=GetMousePosition();

                 wheel=GetMouseWheelMoveV();

                 lmbpressed=IsMouseButtonPressed(0);

                 lmbreleased=IsMouseButtonReleased(0);

+                oldlmbdown=lmbdown;

                 lmbdown=IsMouseButtonDown(0);

+                oldrmbdown=rmbdown;

                 rmbdown=IsMouseButtonDown(1);

                 click_avail=1;

+                has_mousechanges=(lmbdown!=oldlmbdown || rmbdown!=oldrmbdown || mousepos.x!=oldmousepos.x || mousepos.y!=oldmousepos.y || wheel.x!=0 || wheel.y!=0)?1:0;

+                needs_nextredraw=(has_mousechanges==0 && needs_nextredraw==0)?0:1;

+                if(needs_nextredraw==0) {

+                        BeginDrawing();

+                        EndDrawing();

+                        continue;

+                }

+                needs_nextredraw=0;

                 /* process clicks on menus */

                 if(click_avail) {

                         sel_menu=sel_submenu=NULL;

@@ -292,13 +315,11 @@ fprintf(stderr,"SELECTED: \"%s\"->\"%s\"\n",sel_menu,sel_submenu);

                 }

                 if(click_avail)

                         im_body_mouse(im->body, mousepos, wheel, lmbpressed, lmbreleased, lmbdown, &click_avail);

-

-

                 /* draw screen contents */

                 BeginDrawing();

                 ClearBackground(RAYWHITE);

-                im_body_draw(im->body,mousepos,lmbdown,rmbdown,im->w,im->h);

-                im_menubar_draw(im->menubar,im->w,im->h);

+                im_body_draw(im->body,mousepos,lmbdown,rmbdown,im->w,im->h,&needs_nextredraw);

+                im_menubar_draw(im->menubar,im->w,im->h,&needs_nextredraw);

 #if 0

 {

  int i,j;

@@ -592,7 +613,7 @@ im_menubar_mouse(menubar_t *menubar, Vector2 mousepos, int lmbpressed, int lmbre

 }

 int

-im_menubar_draw(menubar_t *menubar, int windowwidth, int windowheight)

+im_menubar_draw(menubar_t *menubar, int windowwidth, int windowheight, int *needs_nextredraw)

 {

         int i,j,k,x;

         menudata_t *menudata;

@@ -803,7 +824,7 @@ im_body_mouse(body_t *body, Vector2 mousepos, Vector2 wheel, int lmbpressed, int

 }

 int

-im_body_draw(body_t *body, Vector2 mousepos, int lmbdown, int rmbdown, int windowwidth, int windowheight)

+im_body_draw(body_t *body, Vector2 mousepos, int lmbdown, int rmbdown, int windowwidth, int windowheight, int *needs_nextredraw)

 {

         int i,k,margin,righty;

         int lastx,lasty;

@@ -949,7 +970,9 @@ DrawRectangle(UNROLLXYWH(body->backxywh),((Color){ 0,255,0,255 })); /* hit zone

                                 /* show image */

                                 has_imagedrawn=0;

                                 if(is_imagefilename(elem->name+1)) {

-                                        if(thumb->has_texture==0 && thumb->has_failedload==0) {

+                                        if(thumb->has_texture==0 && thumb->has_failedload==0 && imutil_fpsleft()==0) {

+                                                *needs_nextredraw=1;

+                                        } else if(thumb->has_texture==0 && thumb->has_failedload==0) {

                                                 Image im;

                                                 char fullpath[2048];

                                                 snprintf(fullpath,sizeof(fullpath),"%s/%s/%s",body->rootdir,dirdata->dirname,elem->name+1);

@@ -1584,3 +1607,35 @@ imutil_loadimage(const char *filename)

 }

 #endif

+static void

+intimutil_fpsdata(struct timeval **deadline)

+{

+        static struct timeval mydeadline;

+        *deadline=&(mydeadline);

+        return;

+}

+

+void

+imutil_fpsreset(void)

+{

+        struct timeval *deadline;

+        long deadlineincr;

+        intimutil_fpsdata(&deadline);

+        gettimeofday(deadline,NULL);

+        deadlineincr=1000000L/TARGETFPS;

+        deadline->tv_usec+=deadlineincr;

+        deadline->tv_sec+=(deadline->tv_usec)/1000000L;

+        deadline->tv_usec%=1000000L;

+}

+

+int

+imutil_fpsleft(void)

+{

+        struct timeval *deadline,now;

+        intimutil_fpsdata(&deadline);

+        gettimeofday(&now,NULL);

+        if(deadline->tv_sec<now.tv_sec || (deadline->tv_sec==now.tv_sec && deadline->tv_usec<now.tv_usec))

+                return(0);

+        return(1);

+}

+