X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fbuttons.c;h=bdac86700da292ff60ac2c0e7c3bb515d572cd74;hb=0c2b6a7610933f9098ec233f7b4c2b52eac3535c;hp=d9c2c47f6a1fd34c3706090b6ff3a9be17585b73;hpb=4f767d54c7ac468e9a42e22caf716111be1ceba9;p=rocksndiamonds.git

diff --git a/src/buttons.c b/src/buttons.c
index d9c2c47f..bdac8670 100644
--- a/src/buttons.c
+++ b/src/buttons.c
@@ -11,6 +11,8 @@
 *  buttons.c                                               *
 ***********************************************************/
 
+#include <stdarg.h>
+
 #include "buttons.h"
 #include "tools.h"
 #include "misc.h"
@@ -632,7 +634,7 @@ void DrawPlayerButton(unsigned long state, int mode)
 {
   Drawable dest_drawto;
   int dest_xoffset, dest_yoffset;
-  int graphic;
+  int graphic = GFX_SPIELER1;	/* default */
   int graphic_offset = (PLAYER_BUTTON_XSIZE - TILEX/2)/2;
   int xpos, ypos;
   int cx = DOOR_GFX_PAGEX4, cy = 0;
@@ -838,7 +840,7 @@ void DrawElemButton(int button_nr, int button_state)
     DrawMiniGraphicExt(drawto,gc,
 		       DX+ED_BUTTON_ELEM_XPOS+3+shift + 
 		       (elem_pos % MAX_ELEM_X)*ED_BUTTON_ELEM_XSIZE,
-		       DY+ED_BUTTON_ELEM_YPOS+3-shift +
+		       DY+ED_BUTTON_ELEM_YPOS+3+shift +
 		       (elem_pos / MAX_ELEM_X)*ED_BUTTON_ELEM_YSIZE,
 		       graphic);
   }
@@ -1461,3 +1463,853 @@ int CheckCountButtons(int mx, int my, int button)
   BackToFront();
   return(return_code);
 }
+
+
+/* NEW GADGET STUFF -------------------------------------------------------- */
+
+
+static struct GadgetInfo *gadget_list_first_entry = NULL;
+static struct GadgetInfo *gadget_list_last_entry = NULL;
+static int next_free_gadget_id = 1;
+static boolean gadget_id_wrapped = FALSE;
+
+static struct GadgetInfo *getGadgetInfoFromGadgetID(int id)
+{
+  struct GadgetInfo *gi = gadget_list_first_entry;
+
+  while (gi && gi->id != id)
+    gi = gi->next;
+
+  return gi;
+}
+
+static int getNewGadgetID()
+{
+  int id = next_free_gadget_id++;
+
+  if (next_free_gadget_id <= 0)		/* counter overrun */
+  {
+    gadget_id_wrapped = TRUE;		/* now we must check each ID */
+    next_free_gadget_id = 0;
+  }
+
+  if (gadget_id_wrapped)
+  {
+    next_free_gadget_id++;
+    while (getGadgetInfoFromGadgetID(next_free_gadget_id) != NULL)
+      next_free_gadget_id++;
+  }
+
+  if (next_free_gadget_id <= 0)		/* cannot get new gadget id */
+    Error(ERR_EXIT, "too much gadgets -- this should not happen");
+
+  return id;
+}
+
+static struct GadgetInfo *getGadgetInfoFromMousePosition(int mx, int my)
+{
+  struct GadgetInfo *gi = gadget_list_first_entry;
+
+  while (gi)
+  {
+    if (gi->mapped &&
+	mx >= gi->x && mx < gi->x + gi->width &&
+	my >= gi->y && my < gi->y + gi->height)
+    {
+
+#if 0
+      if (gi->type & GD_TYPE_SCROLLBAR)
+      {
+	int mpos, gpos;
+
+	if (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL)
+	{
+	  mpos = mx;
+	  gpos = gi->x;
+	}
+	else
+	{
+	  mpos = my;
+	  gpos = gi->y;
+	}
+
+	if (mpos >= gpos + gi->scrollbar.position &&
+	    mpos < gpos + gi->scrollbar.position + gi->scrollbar.size)
+	  break;
+      }
+      else
+#endif
+
+	break;
+    }
+
+    gi = gi->next;
+  }
+
+  return gi;
+}
+
+static void default_callback_function(void *ptr)
+{
+  return;
+}
+
+struct GadgetInfo *CreateGadget(int first_tag, ...)
+{
+  struct GadgetInfo *new_gadget = checked_malloc(sizeof(struct GadgetInfo));
+  int tag = first_tag;
+  va_list ap;
+
+  va_start(ap, first_tag);
+
+  /* always start with reliable default values */
+  memset(new_gadget, 0, sizeof(struct GadgetInfo));	/* zero all fields */
+  new_gadget->id = getNewGadgetID();			/* new gadget id */
+  new_gadget->callback = default_callback_function;	/* dummy function */
+
+  while (tag != GDI_END)
+  {
+    switch(tag)
+    {
+      case GDI_CUSTOM_ID:
+	new_gadget->custom_id = va_arg(ap, int);
+	break;
+
+      case GDI_X:
+	new_gadget->x = va_arg(ap, int);
+	break;
+
+      case GDI_Y:
+	new_gadget->y = va_arg(ap, int);
+	break;
+
+      case GDI_WIDTH:
+	new_gadget->width = va_arg(ap, int);
+	break;
+
+      case GDI_HEIGHT:
+	new_gadget->height = va_arg(ap, int);
+	break;
+
+      case GDI_TYPE:
+	new_gadget->type = va_arg(ap, unsigned long);
+	break;
+
+      case GDI_STATE:
+	new_gadget->state = va_arg(ap, unsigned long);
+	break;
+
+      case GDI_RADIO_NR:
+	new_gadget->radio_nr = va_arg(ap, unsigned long);
+	break;
+
+      case GDI_RADIO_PRESSED:
+	new_gadget->radio_pressed = va_arg(ap, boolean);
+	break;
+
+      case GDI_NUMBER_VALUE:
+	new_gadget->number_value = va_arg(ap, long);
+	break;
+
+      case GDI_TEXT_VALUE:
+	{
+	  int max_textsize = MAX_GADGET_TEXTSIZE;
+
+	  if (new_gadget->text_size)
+	    max_textsize = MIN(new_gadget->text_size, MAX_GADGET_TEXTSIZE - 1);
+
+	  strncpy(new_gadget->text_value, va_arg(ap, char *), max_textsize);
+	  new_gadget->text_value[max_textsize] = '\0';
+	}
+	break;
+
+      case GDI_TEXT_SIZE:
+	{
+	  int tag_value = va_arg(ap, int);
+	  int max_textsize = MIN(tag_value, MAX_GADGET_TEXTSIZE - 1);
+
+	  new_gadget->text_size = max_textsize;
+	  new_gadget->text_value[max_textsize] = '\0';
+
+	  if (new_gadget->width == 0 && new_gadget->height == 0)
+	  {
+	    new_gadget->width = (new_gadget->text_size + 1) * FONT2_XSIZE + 6;
+	    new_gadget->height = ED_WIN_COUNT_YSIZE;
+	  }
+	}
+	break;
+
+      case GDI_DESIGN_UNPRESSED:
+	new_gadget->design[GD_BUTTON_UNPRESSED].pixmap = va_arg(ap, Pixmap);
+	new_gadget->design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
+	new_gadget->design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
+	break;
+
+      case GDI_DESIGN_PRESSED:
+	new_gadget->design[GD_BUTTON_PRESSED].pixmap = va_arg(ap, Pixmap);
+	new_gadget->design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
+	new_gadget->design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
+	break;
+
+      case GDI_ALT_DESIGN_UNPRESSED:
+	new_gadget->alt_design[GD_BUTTON_UNPRESSED].pixmap= va_arg(ap, Pixmap);
+	new_gadget->alt_design[GD_BUTTON_UNPRESSED].x = va_arg(ap, int);
+	new_gadget->alt_design[GD_BUTTON_UNPRESSED].y = va_arg(ap, int);
+	break;
+
+      case GDI_ALT_DESIGN_PRESSED:
+	new_gadget->alt_design[GD_BUTTON_PRESSED].pixmap = va_arg(ap, Pixmap);
+	new_gadget->alt_design[GD_BUTTON_PRESSED].x = va_arg(ap, int);
+	new_gadget->alt_design[GD_BUTTON_PRESSED].y = va_arg(ap, int);
+	break;
+
+      case GDI_DESIGN_BORDER:
+	new_gadget->design_border = va_arg(ap, int);
+	break;
+
+      case GDI_EVENT_MASK:
+	new_gadget->event_mask = va_arg(ap, unsigned long);
+	break;
+
+      case GDI_AREA_SIZE:
+	new_gadget->drawing.area_xsize = va_arg(ap, int);
+	new_gadget->drawing.area_ysize = va_arg(ap, int);
+
+	/* determine dependent values for drawing area gadget, if needed */
+	if (new_gadget->width == 0 &&
+	    new_gadget->height == 0 &&
+	    new_gadget->drawing.item_xsize !=0 &&
+	    new_gadget->drawing.item_ysize !=0)
+	{
+	  new_gadget->width =
+	    new_gadget->drawing.area_xsize * new_gadget->drawing.item_xsize;
+	  new_gadget->height =
+	    new_gadget->drawing.area_ysize * new_gadget->drawing.item_ysize;
+	}
+	else if (new_gadget->drawing.item_xsize == 0 &&
+		 new_gadget->drawing.item_ysize == 0 &&
+		 new_gadget->width != 0 &&
+		 new_gadget->height != 0)
+	{
+	  new_gadget->drawing.item_xsize =
+	    new_gadget->width / new_gadget->drawing.area_xsize;
+	  new_gadget->drawing.item_ysize =
+	    new_gadget->height / new_gadget->drawing.area_ysize;
+	}
+	break;
+
+      case GDI_ITEM_SIZE:
+	new_gadget->drawing.item_xsize = va_arg(ap, int);
+	new_gadget->drawing.item_ysize = va_arg(ap, int);
+
+	/* determine dependent values for drawing area gadget, if needed */
+	if (new_gadget->width == 0 &&
+	    new_gadget->height == 0 &&
+	    new_gadget->drawing.area_xsize !=0 &&
+	    new_gadget->drawing.area_ysize !=0)
+	{
+	  new_gadget->width =
+	    new_gadget->drawing.area_xsize * new_gadget->drawing.item_xsize;
+	  new_gadget->height =
+	    new_gadget->drawing.area_ysize * new_gadget->drawing.item_ysize;
+	}
+	else if (new_gadget->drawing.area_xsize == 0 &&
+		 new_gadget->drawing.area_ysize == 0 &&
+		 new_gadget->width != 0 &&
+		 new_gadget->height != 0)
+	{
+	  new_gadget->drawing.area_xsize =
+	    new_gadget->width / new_gadget->drawing.item_xsize;
+	  new_gadget->drawing.area_ysize =
+	    new_gadget->height / new_gadget->drawing.item_ysize;
+	}
+	break;
+
+      case GDI_SCROLLBAR_ITEMS_MAX:
+	new_gadget->scrollbar.items_max = va_arg(ap, int);
+	break;
+
+      case GDI_SCROLLBAR_ITEMS_VISIBLE:
+	new_gadget->scrollbar.items_visible = va_arg(ap, int);
+	break;
+
+      case GDI_SCROLLBAR_ITEM_POSITION:
+	new_gadget->scrollbar.item_position = va_arg(ap, int);
+	break;
+
+      case GDI_CALLBACK:
+	new_gadget->callback = va_arg(ap, gadget_callback_function);
+	break;
+
+      default:
+	Error(ERR_EXIT, "CreateGadget(): unknown tag %d", tag);
+    }
+
+    tag = va_arg(ap, int);	/* read next tag */
+  }
+
+  va_end(ap);
+
+  /* check if gadget complete */
+  if (new_gadget->type != GD_TYPE_DRAWING_AREA &&
+      (!new_gadget->design[GD_BUTTON_UNPRESSED].pixmap ||
+       !new_gadget->design[GD_BUTTON_PRESSED].pixmap))
+    Error(ERR_EXIT, "gadget incomplete (missing Pixmap)");
+
+  if (new_gadget->type & GD_TYPE_SCROLLBAR)
+  {
+    struct GadgetScrollbar *gs = &new_gadget->scrollbar;
+
+    if (new_gadget->width == 0 || new_gadget->height == 0 ||
+	gs->items_max == 0 || gs->items_visible == 0)
+      Error(ERR_EXIT, "scrollbar gadget incomplete (missing tags)");
+
+    /* calculate internal scrollbar values */
+    gs->size_max = (new_gadget->type == GD_TYPE_SCROLLBAR_VERTICAL ?
+		    new_gadget->height : new_gadget->width);
+    gs->size = gs->size_max * gs->items_visible / gs->items_max;
+    gs->position = gs->size_max * gs->item_position / gs->items_max;
+    gs->position_max = gs->size_max - gs->size;
+  }
+
+  /* insert new gadget into global gadget list */
+  if (gadget_list_last_entry)
+  {
+    gadget_list_last_entry->next = new_gadget;
+    gadget_list_last_entry = gadget_list_last_entry->next;
+  }
+  else
+    gadget_list_first_entry = gadget_list_last_entry = new_gadget;
+
+  return new_gadget;
+}
+
+void FreeGadget(struct GadgetInfo *gi)
+{
+  struct GadgetInfo *gi_previous = gadget_list_first_entry;
+
+  while (gi_previous && gi_previous->next != gi)
+    gi_previous = gi_previous->next;
+
+  if (gi == gadget_list_first_entry)
+    gadget_list_first_entry = gi->next;
+
+  if (gi == gadget_list_last_entry)
+    gadget_list_last_entry = gi_previous;
+
+  gi_previous->next = gi->next;
+  free(gi);
+}
+
+/* values for DrawGadget() */
+#define DG_UNPRESSED	0
+#define DG_PRESSED	1
+#define DG_BUFFERED	0
+#define DG_DIRECT	1
+
+static void DrawGadget(struct GadgetInfo *gi, boolean pressed, boolean direct)
+{
+  int state = (pressed ? 1 : 0);
+  struct GadgetDesign *gd = (gi->radio_pressed ?
+			     &gi->alt_design[state] :
+			     &gi->design[state]);
+
+  switch (gi->type)
+  {
+    case GD_TYPE_NORMAL_BUTTON:
+    case GD_TYPE_RADIO_BUTTON:
+      XCopyArea(display, gd->pixmap, drawto, gc,
+		gd->x, gd->y, gi->width, gi->height, gi->x, gi->y);
+      break;
+
+    case GD_TYPE_TEXTINPUT:
+      {
+	int i;
+
+	/* left part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x, gd->y,
+		  gi->design_border, gi->height,
+		  gi->x, gi->y);
+
+	/* middle part of gadget */
+	for (i=0; i<=gi->text_size; i++)
+	  XCopyArea(display, gd->pixmap, drawto, gc,
+		    gd->x + gi->design_border, gd->y,
+		    FONT2_XSIZE, gi->height,
+		    gi->x + gi->design_border + i * FONT2_XSIZE, gi->y);
+
+	/* right part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x + ED_WIN_COUNT_XSIZE - gi->design_border, gd->y,
+		  gi->design_border, gi->height,
+		  gi->x + gi->width - gi->design_border, gi->y);
+
+	/* gadget text value */
+	DrawText(gi->x + gi->design_border, gi->y + gi->design_border,
+		 gi->text_value, FS_SMALL, (pressed ? FC_GREEN : FC_YELLOW));
+
+	/* draw cursor, if active */
+	DrawText(gi->x + gi->design_border +
+		 strlen(gi->text_value) * FONT2_XSIZE,
+		 gi->y + gi->design_border,
+		 (pressed ? "<" : " "),
+		 FS_SMALL, FC_RED);
+      }
+      break;
+
+    case GD_TYPE_SCROLLBAR_VERTICAL:
+      {
+	int i;
+	int xpos = gi->x;
+	int ypos = gi->y + gi->scrollbar.position;
+	int design_full = gi->width;
+	int design_body = design_full - 2 * gi->design_border;
+	int size_full = gi->scrollbar.size;
+	int size_body = size_full - 2 * gi->design_border;
+	int num_steps = size_body / design_body;
+	int step_size_remain = size_body - num_steps * design_body;
+
+	/* clear scrollbar area */
+	XFillRectangle(display, backbuffer, gc,
+		       gi->x, gi->y, gi->width, gi->height);
+
+	/* upper part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x, gd->y,
+		  gi->width, gi->design_border,
+		  xpos, ypos);
+
+	/* middle part of gadget */
+	for (i=0; i<num_steps; i++)
+	  XCopyArea(display, gd->pixmap, drawto, gc,
+		    gd->x, gd->y + gi->design_border,
+		    gi->width, design_body,
+		    xpos, ypos + gi->design_border + i * design_body);
+
+	/* remaining middle part of gadget */
+	if (step_size_remain > 0)
+	  XCopyArea(display, gd->pixmap, drawto, gc,
+		    gd->x,  gd->y + gi->design_border,
+		    gi->width, step_size_remain,
+		    xpos, ypos + gi->design_border + num_steps * design_body);
+
+	/* lower part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x, gd->y + design_full - gi->design_border,
+		  gi->width, gi->design_border,
+		  xpos, ypos + size_full - gi->design_border);
+      }
+      break;
+
+    case GD_TYPE_SCROLLBAR_HORIZONTAL:
+      {
+	int i;
+	int xpos = gi->x + gi->scrollbar.position;
+	int ypos = gi->y;
+	int design_full = gi->height;
+	int design_body = design_full - 2 * gi->design_border;
+	int size_full = gi->scrollbar.size;
+	int size_body = size_full - 2 * gi->design_border;
+	int num_steps = size_body / design_body;
+	int step_size_remain = size_body - num_steps * design_body;
+
+	/* clear scrollbar area */
+	XFillRectangle(display, backbuffer, gc,
+		       gi->x, gi->y, gi->width, gi->height);
+
+	/* left part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x, gd->y,
+		  gi->design_border, gi->height,
+		  xpos, ypos);
+
+	/* middle part of gadget */
+	for (i=0; i<num_steps; i++)
+	  XCopyArea(display, gd->pixmap, drawto, gc,
+		    gd->x + gi->design_border, gd->y,
+		    design_body, gi->height,
+		    xpos + gi->design_border + i * design_body, ypos);
+
+	/* remaining middle part of gadget */
+	if (step_size_remain > 0)
+	  XCopyArea(display, gd->pixmap, drawto, gc,
+		    gd->x + gi->design_border, gd->y,
+		    step_size_remain, gi->height,
+		    xpos + gi->design_border + num_steps * design_body, ypos);
+
+	/* right part of gadget */
+	XCopyArea(display, gd->pixmap, drawto, gc,
+		  gd->x + design_full - gi->design_border, gd->y,
+		  gi->design_border, gi->height,
+		  xpos + size_full - gi->design_border, ypos);
+      }
+      break;
+
+    default:
+      return;
+  }
+
+  if (direct)
+    XCopyArea(display, drawto, window, gc,
+	      gi->x, gi->y, gi->width, gi->height, gi->x, gi->y);
+  else
+    redraw_mask |= REDRAW_ALL;
+}
+
+void ClickOnGadget(struct GadgetInfo *gi)
+{
+  /* simulate releasing mouse button over last gadget, if still pressed */
+  if (button_status)
+    HandleGadgets(-1, -1, 0);
+
+  /* simulate pressing mouse button over specified gadget */
+  HandleGadgets(gi->x, gi->y, 1);
+
+  /* simulate releasing mouse button over specified gadget */
+  HandleGadgets(gi->x, gi->y, 0);
+}
+
+void AdjustScrollbar(struct GadgetInfo *gi, int items_max, int item_pos)
+{
+  struct GadgetScrollbar *gs = &gi->scrollbar;
+
+  gs->items_max = items_max;
+  gs->item_position = item_pos;
+
+  gs->size = gs->size_max * gs->items_visible / gs->items_max;
+  gs->position = gs->size_max * gs->item_position / gs->items_max;
+  gs->position_max = gs->size_max - gs->size;
+
+  /* finetuning for maximal right/bottom position */
+  if (gs->item_position == gs->items_max - gs->items_visible)
+    gs->position = gs->position_max;
+
+  printf("gs->item_position == %d\n", gs->item_position);
+
+  if (gi->mapped)
+    DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+}
+
+void MapGadget(struct GadgetInfo *gi)
+{
+  if (gi == NULL)
+    return;
+
+  gi->mapped = TRUE;
+
+  DrawGadget(gi, (gi->state == GD_BUTTON_PRESSED), DG_BUFFERED);
+}
+
+void UnmapGadget(struct GadgetInfo *gi)
+{
+  if (gi == NULL)
+    return;
+
+  gi->mapped = FALSE;
+}
+
+static struct GadgetInfo *last_gi = NULL;
+
+void HandleGadgets(int mx, int my, int button)
+{
+  static unsigned long pressed_delay = 0;
+  static last_button = 0;
+  static last_mx = 0, last_my = 0;
+  int scrollbar_mouse_pos;
+  struct GadgetInfo *new_gi, *gi;
+  boolean press_event;
+  boolean release_event;
+  boolean mouse_moving;
+  boolean gadget_pressed;
+  boolean gadget_pressed_repeated;
+  boolean gadget_moving;
+  boolean gadget_moving_inside;
+  boolean gadget_moving_off_borders;
+  boolean gadget_released;
+  boolean gadget_released_inside;
+  boolean gadget_released_off_borders;
+
+  /* check if there are any gadgets defined */
+  if (gadget_list_first_entry == NULL)
+    return;
+
+  /* check which gadget is under the mouse pointer */
+  new_gi = getGadgetInfoFromMousePosition(mx, my);
+
+  /* check if button state has changed since last invocation */
+  press_event = (button != 0 && last_button == 0);
+  release_event = (button == 0 && last_button != 0);
+  last_button = button;
+
+  /* check if mouse has been moved since last invocation */
+  mouse_moving = ((mx != last_mx || my != last_my) && motion_status);
+  last_mx = mx;
+  last_my = my;
+
+  /* if mouse button pressed outside text input gadget, deactivate it */
+  if (last_gi && last_gi->type == GD_TYPE_TEXTINPUT &&
+      button != 0 && new_gi != last_gi && !motion_status)
+  {
+    struct GadgetInfo *gi = last_gi;
+
+    DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+
+    if (gi->event_mask & GD_EVENT_TEXT_LEAVING)
+      gi->callback(gi);
+
+    last_gi = NULL;
+  }
+
+  gadget_pressed =
+    (button != 0 && last_gi == NULL && new_gi != NULL && press_event);
+  gadget_pressed_repeated =
+    (button != 0 && last_gi != NULL && new_gi == last_gi);
+
+  gadget_released =		(button == 0 && last_gi != NULL);
+  gadget_released_inside =	(gadget_released && new_gi == last_gi);
+  gadget_released_off_borders =	(gadget_released && new_gi != last_gi);
+
+  gadget_moving =	      (button != 0 && last_gi != NULL && mouse_moving);
+  gadget_moving_inside =      (gadget_moving && new_gi == last_gi);
+  gadget_moving_off_borders = (gadget_moving && new_gi != last_gi);
+
+  /* if new gadget pressed, store this gadget  */
+  if (gadget_pressed)
+    last_gi = new_gi;
+
+  /* 'gi' is actually handled gadget */
+  gi = last_gi;
+
+  /* if gadget is scrollbar, choose mouse position value */
+  if (gi && gi->type & GD_TYPE_SCROLLBAR)
+    scrollbar_mouse_pos =
+      (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL ? mx - gi->x : my - gi->y);
+
+  /* if mouse button released, no gadget needs to be handled anymore */
+  if (button == 0 && last_gi && last_gi->type != GD_TYPE_TEXTINPUT)
+    last_gi = NULL;
+
+  if (gi)
+  {
+    gi->event.x = mx - gi->x;
+    gi->event.y = my - gi->y;
+
+    if (gi->type == GD_TYPE_DRAWING_AREA)
+    {
+      gi->event.x /= gi->drawing.item_xsize;
+      gi->event.y /= gi->drawing.item_ysize;
+    }
+  }
+
+  if (gadget_pressed)
+  {
+    if (gi->type == GD_TYPE_RADIO_BUTTON)
+    {
+      struct GadgetInfo *rgi = gadget_list_first_entry;
+
+      while (rgi)
+      {
+	if (rgi->mapped &&
+	    rgi->type == GD_TYPE_RADIO_BUTTON &&
+	    rgi->radio_nr == gi->radio_nr &&
+	    rgi != gi)
+	{
+	  rgi->radio_pressed = FALSE;
+	  DrawGadget(rgi, DG_UNPRESSED, DG_DIRECT);
+	}
+
+	rgi = rgi->next;
+      }
+
+      gi->radio_pressed = TRUE;
+    }
+    else if (gi->type & GD_TYPE_SCROLLBAR)
+    {
+      int mpos, gpos;
+
+      if (gi->type == GD_TYPE_SCROLLBAR_HORIZONTAL)
+      {
+	mpos = mx;
+	gpos = gi->x;
+      }
+      else
+      {
+	mpos = my;
+	gpos = gi->y;
+      }
+
+      if (mpos >= gpos + gi->scrollbar.position &&
+	  mpos < gpos + gi->scrollbar.position + gi->scrollbar.size)
+      {
+	/* drag scrollbar */
+	gi->scrollbar.drag_position =
+	  scrollbar_mouse_pos - gi->scrollbar.position;
+      }
+      else
+      {
+	/* click scrollbar one scrollbar length up/left or down/right */
+
+	struct GadgetScrollbar *gs = &gi->scrollbar;
+	int old_item_position = gs->item_position;
+	boolean changed_position = FALSE;
+
+	gs->item_position +=
+	  gs->items_visible * (mpos < gpos + gi->scrollbar.position ? -1 : +1);
+
+	if (gs->item_position < 0)
+	  gs->item_position = 0;
+	if (gs->item_position > gs->items_max - gs->items_visible)
+	  gs->item_position = gs->items_max - gs->items_visible;
+
+	if (old_item_position != gs->item_position)
+	{
+	  gi->event.item_position = gs->item_position;
+	  changed_position = TRUE;
+
+	  printf("gs->item_position == %d\n", gs->item_position);
+	}
+
+	AdjustScrollbar(gi, gs->items_max, gs->item_position);
+
+	gi->state = GD_BUTTON_UNPRESSED;
+	gi->event.type = GD_EVENT_MOVING;
+	gi->event.off_borders = FALSE;
+
+	if (gi->event_mask & GD_EVENT_MOVING && changed_position)
+	  gi->callback(gi);
+
+	/* don't handle this scrollbar anymore while mouse button pressed */
+	last_gi = NULL;
+
+	return;
+      }
+    }
+
+    DrawGadget(gi, DG_PRESSED, DG_DIRECT);
+
+    gi->state = GD_BUTTON_PRESSED;
+    gi->event.type = GD_EVENT_PRESSED;
+    gi->event.button = button;
+    gi->event.off_borders = FALSE;
+
+    /* initialize delay counter */
+    pressed_delay = 0;
+    DelayReached(&pressed_delay, GADGET_FRAME_DELAY);
+
+    if (gi->event_mask & GD_EVENT_PRESSED)
+      gi->callback(gi);
+  }
+
+  if (gadget_pressed_repeated)
+  {
+    if (gi->event_mask & GD_EVENT_REPEATED &&
+	DelayReached(&pressed_delay, GADGET_FRAME_DELAY))
+      gi->callback(gi);
+  }
+
+  if (gadget_moving)
+  {
+    boolean changed_position = FALSE;
+
+    if (gi->type & GD_TYPE_BUTTON)
+    {
+      if (gadget_moving_inside && gi->state == GD_BUTTON_UNPRESSED)
+	DrawGadget(gi, DG_PRESSED, DG_DIRECT);
+      else if (gadget_moving_off_borders && gi->state == GD_BUTTON_PRESSED)
+	DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+    }
+
+    if (gi->type & GD_TYPE_SCROLLBAR)
+    {
+      struct GadgetScrollbar *gs = &gi->scrollbar;
+      int old_item_position = gs->item_position;
+
+      gs->position = scrollbar_mouse_pos - gs->drag_position;
+
+      if (gs->position < 0)
+	gs->position = 0;
+      if (gs->position > gs->position_max)
+	gs->position = gs->position_max;
+
+      gs->item_position = gs->items_max * gs->position / gs->size_max;
+
+      if (old_item_position != gs->item_position)
+      {
+	gi->event.item_position = gs->item_position;
+	changed_position = TRUE;
+
+	printf("gs->item_position == %d\n", gs->item_position);
+      }
+
+      DrawGadget(gi, DG_PRESSED, DG_DIRECT);
+    }
+
+    gi->state = (gadget_moving_inside || gi->type & GD_TYPE_SCROLLBAR ?
+		 GD_BUTTON_PRESSED : GD_BUTTON_UNPRESSED);
+    gi->event.type = GD_EVENT_MOVING;
+    gi->event.off_borders = gadget_moving_off_borders;
+
+    if (gi->event_mask & GD_EVENT_MOVING && changed_position &&
+	(gadget_moving_inside || gi->event_mask & GD_EVENT_OFF_BORDERS))
+      gi->callback(gi);
+  }
+
+  if (gadget_released_inside)
+  {
+    if (gi->type != GD_TYPE_TEXTINPUT)
+      DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+
+    gi->state = GD_BUTTON_UNPRESSED;
+    gi->event.type = GD_EVENT_RELEASED;
+
+    if (gi->event_mask & GD_EVENT_RELEASED)
+      gi->callback(gi);
+  }
+
+  if (gadget_released_off_borders)
+  {
+    if (gi->type & GD_TYPE_SCROLLBAR)
+      DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+
+    gi->event.type = GD_EVENT_RELEASED;
+
+    if (gi->event_mask & GD_EVENT_RELEASED &&
+	gi->event_mask & GD_EVENT_OFF_BORDERS)
+      gi->callback(gi);
+  }
+}
+
+void HandleGadgetsKeyInput(KeySym key)
+{
+  struct GadgetInfo *gi = last_gi;
+  int text_length;
+  char letter;
+
+  if (gi == NULL || gi->type != GD_TYPE_TEXTINPUT)
+    return;
+
+  text_length = strlen(gi->text_value);
+  letter = getCharFromKeySym(key);
+
+  if (letter && text_length < gi->text_size)
+  {
+    gi->text_value[text_length] = letter;
+    gi->text_value[text_length + 1] = '\0';
+    DrawGadget(gi, DG_PRESSED, DG_DIRECT);
+  }
+  else if ((key == XK_Delete || key == XK_BackSpace) && text_length > 0)
+  {
+    gi->text_value[text_length - 1] = '\0';
+    DrawGadget(gi, DG_PRESSED, DG_DIRECT);
+  }
+  else if (key == XK_Return)
+  {
+    DrawGadget(gi, DG_UNPRESSED, DG_DIRECT);
+
+    if (gi->event_mask & GD_EVENT_TEXT_RETURN)
+      gi->callback(gi);
+
+    last_gi = NULL;
+  }
+}