@@ -20,6 +20,7 @@

  *               Preserve aspect ratio of big image.

  *      20250305 Scrollable left pane.

  *      20250308 Show statustooltip on image hover.

+ *               Scrollwheel support for leftside.

  *

  * Author: Dario Rodriguez dario@darionomono.com

  * (c) Dario Rodriguez 2025

@@ -51,6 +52,8 @@

 #define FONTBIGSIZE 32

 #define FONTHUGESIZE 48

+#define WHEELSTEP LEFTIMAGESIDELEN

+

 #define ROOTDIR "/var/www/default/animeshot/"

 #define SEP "/"

@@ -148,6 +151,7 @@ typedef struct listing_t {

         char *buf;

         int has_leftxywh;

         int has_rightxywh;

+        xywh_t lastleftxywh;

 } listing_t;

 typedef struct dirdata_t {

@@ -206,7 +210,7 @@ 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, int lmbpressed, int lmbreleased, int lmbdown, int *click_avail);

+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 windowwidth, int windowheight);

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

@@ -228,7 +232,7 @@ int

 main(int argc, char *argv[])

 {

         im_t *im;

-        Vector2 mousepos;

+        Vector2 mousepos,wheel;

         int flag_ignorelmb;

         int lmbpressed,lmbreleased,lmbdown;

         int click_avail;

@@ -239,6 +243,7 @@ main(int argc, char *argv[])

         flag_ignorelmb=0;

         while(!WindowShouldClose()) {

                 mousepos=GetMousePosition();

+                wheel=GetMouseWheelMoveV();

                 lmbpressed=IsMouseButtonPressed(0);

                 lmbreleased=IsMouseButtonReleased(0);

                 lmbdown=IsMouseButtonDown(0);

@@ -254,7 +259,7 @@ fprintf(stderr,"SELECTED: \"%s\"->\"%s\"\n",sel_menu,sel_submenu);

                         }

                 }

                 if(click_avail)

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

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

                 /* draw screen contents */

@@ -707,7 +712,7 @@ im_body_add(body_t *body,char *dir)

 }

 int

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

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

 {

         int i;

         char *ptr;

@@ -715,9 +720,15 @@ im_body_mouse(body_t *body, Vector2 mousepos, int lmbpressed, int lmbreleased, i

         listingdata_t *ld;

         if(body==NULL || click_avail==NULL || body->currentdirdata<0 || body->currentdirdata>=body->sizedirdata || body->dirdata[body->currentdirdata]==NULL)

                 return(-1); /* sanity check error */

-        if(*click_avail==0 || lmbreleased==0)

-                return(0); /* nothing to do */

         dirdata=body->dirdata[body->currentdirdata];

+        /* wheel */

+        body->leftscrollpos-=(int)wheel.y*WHEELSTEP;

+        body->leftscrollpos=(body->leftscrollpos<0)?0:body->leftscrollpos;

+        if(body->leftscrollpos>dirdata->listing.lastleftxywh.y)

+                body->leftscrollpos=dirdata->listing.lastleftxywh.y;

+        /* check if we have to process a click */

+        if(*click_avail==0 || lmbreleased==0)

+                return(0); /* nothing else to do */

         /* leftside backbutton */

         if(is_imutil_insidexywh(mousepos,&(body->backxywh))) {

                 static char sep[]={SEP};

@@ -729,6 +740,7 @@ im_body_mouse(body_t *body, Vector2 mousepos, int lmbpressed, int lmbreleased, i

                         dirdata->dirname[0]='\0';

                 }

                 listing_get(&(dirdata->listing),body->rootdir,dirdata->dirname,1);

+                body->leftscrollpos=0;

                 *click_avail=0;

                 return(0);

         }

@@ -737,7 +749,7 @@ im_body_mouse(body_t *body, Vector2 mousepos, int lmbpressed, int lmbreleased, i

                 ld=dirdata->listing.elems+i;

                 if(ld->name[0]!='d')

                         continue;

-                if(is_imutil_insidexywh(mousepos,&(ld->left.xywh))) {

+                if(is_imutil_insidexywh(mousepos,&(ld->left.screenxywh))) {

                         char *newname,*oldprefix;

                         int l,l0,l1;

                         static char sep[]={SEP};

@@ -756,6 +768,7 @@ im_body_mouse(body_t *body, Vector2 mousepos, int lmbpressed, int lmbreleased, i

                         free(dirdata->dirname),dirdata->dirname=NULL;

                         dirdata->dirname=newname;

                         listing_get(&(dirdata->listing),body->rootdir,dirdata->dirname,1);

+                        body->leftscrollpos=0;

                         *click_avail=0;

                         return(0);

                 }

@@ -780,17 +793,6 @@ im_body_draw(body_t *body, Vector2 mousepos, int lmbdown, int windowwidth, int w

         char statustooltip[1024];

         if(body==NULL)

                 return(-1);

-#if 1

-#warning TESTING LEFTSCROLL

-body->leftscrollpos=(int) mousepos.y;

-{

- static int lastlsp=-1;

- if(body->leftscrollpos!=lastlsp) {

-  lastlsp=body->leftscrollpos;

-  fprintf(stderr,"leftscrollpos:%i\n",body->leftscrollpos);

- }

-}

-#endif

         font=body->ptrfont;

         fontbig=body->ptrfontbig;

         fonthuge=body->ptrfonthuge;

@@ -1368,6 +1370,8 @@ listing_fillxywh(listing_t *listing, font_t *font, int w, int sidelen, int is_le

         if(listing==NULL || font==NULL)

                 return(-1); /* sanity check failed */

         margin=font->height/4;

+        if(is_leftside)

+                memset(&(listing->lastleftxywh),0,sizeof(listing->lastleftxywh));

         /* directories */

         if(is_leftside) {

                 x0=font->height/2;

@@ -1391,6 +1395,8 @@ listing_fillxywh(listing_t *listing, font_t *font, int w, int sidelen, int is_le

                         continue;

                 }

                 FILLXYWH(thumb->xywh,x,y,margin*2+m2.x,margin*2+font->height);

+                if(is_leftside && (thumb->xywh.y+thumb->xywh.h)>(listing->lastleftxywh.y+listing->lastleftxywh.h))

+                        memcpy(&(listing->lastleftxywh),&(thumb->xywh),sizeof(xywh_t));

                 x+=margin*2+m2.x+font->height/4;

         }

         y+=((x==x0)?0:font->height+margin*2+font->height/4);

@@ -1415,6 +1421,8 @@ listing_fillxywh(listing_t *listing, font_t *font, int w, int sidelen, int is_le

                         continue;

                 }

                 FILLXYWH(thumb->xywh,x,y,sidelen,sidelen);

+                if(is_leftside && (thumb->xywh.y+thumb->xywh.h)>(listing->lastleftxywh.y+listing->lastleftxywh.h))

+                        memcpy(&(listing->lastleftxywh),&(thumb->xywh),sizeof(xywh_t));

                 x+=margin*2+sidelen;

         }

         return(0);