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Diffstat (limited to 'body/fltk-widgets-groups-scrolls.adb')
| -rw-r--r-- | body/fltk-widgets-groups-scrolls.adb | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/body/fltk-widgets-groups-scrolls.adb b/body/fltk-widgets-groups-scrolls.adb new file mode 100644 index 0000000..a4885dc --- /dev/null +++ b/body/fltk-widgets-groups-scrolls.adb @@ -0,0 +1,346 @@ + + +-- Programmed by Jedidiah Barber +-- Released into the public domain + + +with + + Interfaces.C; + +use type + + Interfaces.C.unsigned_char; + + +package body FLTK.Widgets.Groups.Scrolls is + + + ------------------------ + -- Functions From C -- + ------------------------ + + function new_fl_scroll + (X, Y, W, H : in Interfaces.C.int; + Text : in Interfaces.C.char_array) + return Storage.Integer_Address; + pragma Import (C, new_fl_scroll, "new_fl_scroll"); + pragma Inline (new_fl_scroll); + + procedure free_fl_scroll + (S : in Storage.Integer_Address); + pragma Import (C, free_fl_scroll, "free_fl_scroll"); + pragma Inline (free_fl_scroll); + + + + + function fl_scroll_hscrollbar + (S : in Storage.Integer_Address) + return Storage.Integer_Address; + pragma Import (C, fl_scroll_hscrollbar, "fl_scroll_hscrollbar"); + pragma Inline (fl_scroll_hscrollbar); + + function fl_scroll_scrollbar + (S : in Storage.Integer_Address) + return Storage.Integer_Address; + pragma Import (C, fl_scroll_scrollbar, "fl_scroll_scrollbar"); + pragma Inline (fl_scroll_scrollbar); + + + + + procedure fl_scroll_to + (S : in Storage.Integer_Address; + X, Y : in Interfaces.C.int); + pragma Import (C, fl_scroll_to, "fl_scroll_to"); + pragma Inline (fl_scroll_to); + + function fl_scroll_xposition + (S : in Storage.Integer_Address) + return Interfaces.C.int; + pragma Import (C, fl_scroll_xposition, "fl_scroll_xposition"); + pragma Inline (fl_scroll_xposition); + + function fl_scroll_yposition + (S : in Storage.Integer_Address) + return Interfaces.C.int; + pragma Import (C, fl_scroll_yposition, "fl_scroll_yposition"); + pragma Inline (fl_scroll_yposition); + + + + + function fl_scroll_get_size + (S : in Storage.Integer_Address) + return Interfaces.C.int; + pragma Import (C, fl_scroll_get_size, "fl_scroll_get_size"); + pragma Inline (fl_scroll_get_size); + + procedure fl_scroll_set_size + (S : in Storage.Integer_Address; + T : in Interfaces.C.int); + pragma Import (C, fl_scroll_set_size, "fl_scroll_set_size"); + pragma Inline (fl_scroll_set_size); + + + + + procedure fl_scroll_draw + (S : in Storage.Integer_Address); + pragma Import (C, fl_scroll_draw, "fl_scroll_draw"); + pragma Inline (fl_scroll_draw); + + function fl_scroll_handle + (S : in Storage.Integer_Address; + E : in Interfaces.C.int) + return Interfaces.C.int; + pragma Import (C, fl_scroll_handle, "fl_scroll_handle"); + pragma Inline (fl_scroll_handle); + + + + + ------------------- + -- Destructors -- + ------------------- + + -- It's the only way to be sure + procedure fl_scrollbar_extra_final + (Ada_Obj : in Storage.Integer_Address); + pragma Import (C, fl_scrollbar_extra_final, "fl_scrollbar_extra_final"); + pragma Inline (fl_scrollbar_extra_final); + + + procedure Extra_Final + (This : in out Scroll) is + begin + fl_scrollbar_extra_final (Storage.To_Integer (This.Horizon'Address)); + fl_scrollbar_extra_final (Storage.To_Integer (This.Vertigo'Address)); + Extra_Final (Group (This)); + end Extra_Final; + + + procedure Finalize + (This : in out Scroll) is + begin + Extra_Final (This); + if This.Void_Ptr /= Null_Pointer and This.Needs_Dealloc then + free_fl_scroll (This.Void_Ptr); + This.Void_Ptr := Null_Pointer; + end if; + end Finalize; + + + + + -------------------- + -- Constructors -- + -------------------- + + -- Hold on, I know a shortcut + procedure fl_scrollbar_extra_init + (Ada_Obj : in Storage.Integer_Address; + X, Y, W, H : in Interfaces.C.int; + C_Str : in Interfaces.C.char_array); + pragma Import (C, fl_scrollbar_extra_init, "fl_scrollbar_extra_init"); + pragma Inline (fl_scrollbar_extra_init); + + + procedure Extra_Init + (This : in out Scroll; + X, Y, W, H : in Integer; + Text : in String) is + begin + Widget (This.Horizon).Void_Ptr := fl_scroll_hscrollbar (This.Void_Ptr); + Widget (This.Horizon).Needs_Dealloc := False; + fl_scrollbar_extra_init + (Storage.To_Integer (This.Horizon'Address), + Interfaces.C.int (This.Horizon.Get_X), + Interfaces.C.int (This.Horizon.Get_Y), + Interfaces.C.int (This.Horizon.Get_W), + Interfaces.C.int (This.Horizon.Get_H), + Interfaces.C.To_C (This.Horizon.Get_Label)); + Widget (This.Vertigo).Void_Ptr := fl_scroll_scrollbar (This.Void_Ptr); + Widget (This.Vertigo).Needs_Dealloc := False; + fl_scrollbar_extra_init + (Storage.To_Integer (This.Vertigo'Address), + Interfaces.C.int (This.Vertigo.Get_X), + Interfaces.C.int (This.Vertigo.Get_Y), + Interfaces.C.int (This.Vertigo.Get_W), + Interfaces.C.int (This.Vertigo.Get_H), + Interfaces.C.To_C (This.Vertigo.Get_Label)); + Extra_Init (Group (This), X, Y, W, H, Text); + end Extra_Init; + + + procedure Initialize + (This : in out Scroll) is + begin + This.Draw_Ptr := fl_scroll_draw'Address; + This.Handle_Ptr := fl_scroll_handle'Address; + end Initialize; + + + package body Forge is + + function Create + (X, Y, W, H : in Integer; + Text : in String := "") + return Scroll is + begin + return This : Scroll do + This.Void_Ptr := new_fl_scroll + (Interfaces.C.int (X), + Interfaces.C.int (Y), + Interfaces.C.int (W), + Interfaces.C.int (H), + Interfaces.C.To_C (Text)); + Extra_Init (This, X, Y, W, H, Text); + end return; + end Create; + + + function Create + (Parent : in out Group'Class; + X, Y, W, H : in Integer; + Text : in String := "") + return Scroll is + begin + return This : Scroll := Create (X, Y, W, H, Text) do + Parent.Add (This); + end return; + end Create; + + end Forge; + + + + + ------------------ + -- Attributes -- + ------------------ + + function H_Bar + (This : in out Scroll) + return Valuators.Sliders.Scrollbars.Scrollbar_Reference is + begin + return (Data => This.Horizon'Unchecked_Access); + end H_Bar; + + + function V_Bar + (This : in out Scroll) + return Valuators.Sliders.Scrollbars.Scrollbar_Reference is + begin + return (Data => This.Vertigo'Unchecked_Access); + end V_Bar; + + + + + ----------------------- + -- API Subprograms -- + ----------------------- + + procedure Clear + (This : in out Scroll) is + begin + -- Can't use the actual clear method here because that would + -- delete the widgets from memory, and the binding is meant to + -- handle that, not the library. + This.Remove (This.Horizon); + This.Remove (This.Vertigo); + Group (This).Clear; + This.Add (This.Horizon); + This.Add (This.Vertigo); + end Clear; + + + + + procedure Scroll_To + (This : in out Scroll; + X, Y : in Integer) is + begin + fl_scroll_to (This.Void_Ptr, Interfaces.C.int (X), Interfaces.C.int (Y)); + end Scroll_To; + + + function Get_Scroll_X + (This : in Scroll) + return Integer is + begin + return Integer (fl_scroll_xposition (This.Void_Ptr)); + end Get_Scroll_X; + + + function Get_Scroll_Y + (This : in Scroll) + return Integer is + begin + return Integer (fl_scroll_yposition (This.Void_Ptr)); + end Get_Scroll_Y; + + + + + function Get_Scrollbar_Size + (This : in Scroll) + return Integer is + begin + return Integer (fl_scroll_get_size (This.Void_Ptr)); + end Get_Scrollbar_Size; + + + procedure Set_Scrollbar_Size + (This : in out Scroll; + To : in Integer) is + begin + fl_scroll_set_size (This.Void_Ptr, Interfaces.C.int (To)); + end Set_Scrollbar_Size; + + + function Get_Kind + (This : in Scroll) + return Scroll_Kind + is + Result : Interfaces.C.unsigned_char := fl_widget_get_type (This.Void_Ptr); + begin + return Scroll_Kind'Val (Result - 1); + exception + when Constraint_Error => raise Internal_FLTK_Error with + "Fl_Scroll::type returned unexpected unsigned char value of " & + Interfaces.C.unsigned_char'Image (Result); + end Get_Kind; + + + procedure Set_Kind + (This : in out Scroll; + Mode : in Scroll_Kind) is + begin + fl_widget_set_type (This.Void_Ptr, Scroll_Kind'Pos (Mode)); + end Set_Kind; + + + + + procedure Draw + (This : in out Scroll) is + begin + Group (This).Draw; + end Draw; + + + function Handle + (This : in out Scroll; + Event : in Event_Kind) + return Event_Outcome is + begin + return Group (This).Handle (Event); + end Handle; + + +end FLTK.Widgets.Groups.Scrolls; + + |