path: root/src/lib/evas/canvas/efl_canvas_object.eo

import evas_types;
import efl_text_types;

abstract Efl.Canvas.Object (Efl.Object, Efl.Gfx, Efl.Gfx.Stack, Efl.Animator,
                            Efl.Input.Interface, Efl.Gfx.Size.Hint,
                            Efl.Gfx.Map)
{
   legacy_prefix: evas_object;
   data: Evas_Object_Protected_Data;
   methods {
      legacy_ctor @protected @beta {
          [[Internal function. Do not use.]]
      }
      @property type @protected {
         set {
            [[Sets the legacy type name of this Evas object.]]
            legacy: null;
         }
         values {
            type: string; [[The type of the object.]]
         }
      }
      @property pointer_mode {
         [[Low-level pointer behaviour.

           This function has a direct effect on event callbacks related to
           pointers (mouse, ...).

           If the value is @Efl.Event.Object_Pointer_Mode.auto_grab (default),
           then when mouse is pressed down over this object, events will be
           restricted to it as source, mouse moves, for example, will be
           emitted even when the pointer goes outside this objects
           geometry.

           If the value is @Efl.Event.Object_Pointer_Mode.no_grab, then events
           will be emitted just when inside this object area.

           The default value is @Efl.Event.Object_Pointer_Mode.auto_grab.
         ]]
         values {
            pointer_mode: Efl.Event.Object_Pointer_Mode;
         }
      }
      @property render_op {
         [[Render mode to be used for compositing the Evas object.

           Only two modes are supported:
           - @Efl.Gfx.Render_Op.blend means the object will be merged on
           top of objects below it using simple alpha compositing.
           - @Efl.Gfx.Render_Op.copy means this object's pixels will replace
           everything that is below, making this object opaque.

           Please do not assume that @Efl.Gfx.Render_Op.copy mode can be
           used to "poke" holes in a window (to see through it), as only the
           compositor can ensure that. Copy mode should only be used with
           otherwise opaque widgets, or inside non-window surfaces (eg. a
           transparent background inside a buffer canvas).
         ]]
         set {
            legacy: null;
         }
         get {
            legacy: null;
         }
         values {
            render_op: Efl.Gfx.Render_Op; [[Blend or copy.]]
         }
      }
      @property freeze_events {
         set {
            [[Set whether an Evas object is to freeze (discard) events.

              If $freeze is $true, it will make events on $obj to be
              discarded. Unlike @.pass_events.set, events will not be
              passed to next lower object. This API can be used for
              blocking events while $obj is on transiting.

              If $freeze is $false, events will be processed on that
              object as normal.
            
              Warning: If you block only key/mouse up events with this API,
              we won't guarantee the state of the object, that only had
              key/mouse down events, will be.

              @since 1.1
            ]]
         }
         get {
            [[Determine whether an object is set to freeze (discard) events.

              @since 1.1
            ]]
         }
         values {
            freeze: bool; [[Pass when $obj is to freeze events ($true)
                            or not ($false).]]
         }
      }
      @property clip {
         set {
            [[Clip one object to another.

              This function will clip the object $obj to the area occupied
              by the object $clip. This means the object $obj will only be
              visible within the area occupied by the clipping object
              ($clip).

              The color of the object being clipped will be multiplied by
              the color of the clipping one, so the resulting color for the
              former will be "RESULT = (OBJ * CLIP) / (255 * 255)", per color
              element (red, green, blue and alpha).

              Clipping is recursive, so clipping objects may be clipped by
              others, and their color will in term be multiplied. You may
              not set up circular clipping lists (i.e. object 1 clips
              object 2, which clips object 1): the behavior of Evas is
              undefined in this case.

              Objects which do not clip others are visible in the canvas as
              normal; those that clip one or more objects become invisible
              themselves, only affecting what they clip. If an object ceases
              to have other objects being clipped by it, it will become
              visible again.

              The visibility of an object affects the objects that are
              clipped by it, so if the object clipping others is not shown
              (as in \@ref evas_object_show), the objects clipped by it will
              not be shown  either.

              If $obj was being clipped by another object when this function
              is  called, it gets implicitly removed from the old clipper's
              domain and is made now to be clipped by its new clipper.

              Note: At the moment the only objects that can validly be used
              to clip other objects are rectangle objects. All other object
              types are invalid and the result of using them is undefined.
              The clip object $clip must be a valid object, but can also be
              $null, in which case the effect of this function is the same
              as @.clip_unset on the $obj object.
            ]]
            /* FIXME-doc
            The following figure illustrates some clipping in Evas:

            @image html clipping.png
            @image rtf clipping.png
            @image latex clipping.eps
            ---
            Example:
            @dontinclude evas-object-manipulation.c
            @skip solid white clipper (note that it's the default color for a
            @until evas_object_show(d.clipper);

            See the full @ref Example_Evas_Object_Manipulation "example".
            */
         }
         get {
            [[Get the object clipping $obj (if any).

              This function returns the object clipping $obj. If $obj is
              not being clipped at all, $null is returned. The object $obj
              must be a valid Evas_Object.
            ]]
            /* FIXME-doc
            Example:
            @dontinclude evas-object-manipulation.c
            @skip if (evas_object_clip_get(d.img) == d.clipper)
            @until return

            See the full @ref Example_Evas_Object_Manipulation "example".
            */
         }
         values {
            clip: Efl.Canvas.Object @nonull; [[The object to clip $obj by.]]
         }
      }
      @property repeat_events {
         set {
            [[Set whether an Evas object is to repeat events.

              If $repeat is $true, it will make events on $obj to also be
              repeated for the next lower object in the objects' stack (see
              see \@ref evas_object_below_get).

              If $repeat is $false, events occurring on $obj will be
              processed only on it.
            ]]
            /* FIXME-doc
            Example:
            @dontinclude evas-stacking.c
            @skip if (strcmp(ev->key, "r") == 0)
            @until }

            See the full @ref Example_Evas_Stacking "example".
            */
         }
         get {
            [[Determine whether an object is set to repeat events.]]
         }
         values {
            repeat: bool; [[Whether $obj is to repeat events ($true) or
                            not ($false).]]
         }
      }
      @property scale {
         set {
            [[Sets the scaling factor for an Evas object. Does not affect
              all objects.

              This will multiply the object's dimension by the given factor,
              thus altering its geometry (width and height). Useful when
              you want scalable UI elements, possibly at run time.

              Note: Only text and textblock objects have scaling change
              handlers. Other objects won't change visually on this call.
            ]]
         }
         get {
            [[Retrieves the scaling factor for the given Evas object.]]
         }
         values {
            scale: double; [[The scaling factor. 1.0 means no scaling,
                             default size.]]
         }
      }
      @property key_focus {
         [[Indicates that this object is the keyboard event receiver on
           its canvas.

           Changing focus only affects where (key) input events go.
           There can be only one object focused at any time. If $focus
           is $true, $obj will be set as the currently focused object
           and it will receive all keyboard events that are not
           exclusive key grabs on other objects.
         ]]
         set {
            legacy: evas_object_focus_set;
         }
         get {
            legacy: evas_object_focus_get;
         }
         values {
            focus: bool; [[$true when set as focused or $false otherwise.]]
         }
      }
      @property is_frame_object {
         set {
            [[@since 1.2]]
         }
         get {
            [[@since 1.2]]
         }
         values {
            is_frame: bool;
         }
      }
      @property precise_is_inside {
         set {
            [[Set whether to use precise (usually expensive) point collision
              detection for a given Evas object.

              Use this function to make Evas treat objects' transparent
              areas as not belonging to it with regard to mouse pointer
              events. By default, all of the object's boundary rectangle
              will be taken in account for them.

              Warning: By using precise point collision detection you'll be
              making Evas more resource intensive.
            ]]
            /* FIXME-doc
            Example code follows.
            @dontinclude evas-events.c
            @skip if (strcmp(ev->key, "p") == 0)
            @until }

            See the full example @ref Example_Evas_Events "here".
            */
         }
         get {
            [[Determine whether an object is set to use precise point
              collision detection.
            ]]
         }
         values {
            precise: bool; [[Whether to use precise point collision
                             detection or not. The default value is false.]]
         }
      }
      @property propagate_events {
         set {
            [[Set whether events on a smart object's member should get
              propagated up to its parent.

              This function has no effect if $obj is not a member of a
              smart object.

              If $prop is $true, events occurring on this object will be
              propagated on to the smart object of which $obj is a member.
              If $prop is $false, events occurring on this object will not
              be propagated on to the smart object of which $obj is a
              member. The default value is $true.

              See also @.repeat_events.set, @.pass_events.set,
              @.freeze_events.set.
            ]]
         }
         get {
            [[Retrieve whether an Evas object is set to propagate events.

              See also @.repeat_events.get, @.pass_events.get,
              @.freeze_events.get.
            ]]
         }
         values {
            propagate: bool; [[Whether to propagate events ($true) or not
                               ($false).]]
         }
      }
      @property pass_events {
         set {
            [[Set whether an Evas object is to pass (ignore) events.

              If $pass is $true, it will make events on $obj to be ignored.
              They will be triggered on the next lower object (that is not
              set to pass events), instead (see \@ref evas_object_below_get).

              If $pass is $false, events will be processed on that object
              as normal.

              See also @.repeat_events.set, @.propagate_events.set,
              @.freeze_events.set.
            ]]
         }
         get {
            [[Determine whether an object is set to pass (ignore) events.

              See also @.repeat_events.get, @.propagate_events.get,
              @.freeze_events.get.
            ]]
            /* FIXME-doc
            Example:
            @dontinclude evas-stacking.c
            @skip if (strcmp(ev->key, "p") == 0)
            @until }

            See the full @ref Example_Evas_Stacking "example".
            */
         }
         values {
            pass: bool; [[Whether $obj is to pass events ($true) or not
                         ($false).]]
         }
      }
      @property anti_alias {
         set {
            [[Sets whether or not the given Evas object is to be drawn
              anti-aliased.
            ]]
         }
         get {
            [[Retrieves whether or not the given Evas object is to be drawn
              anti_aliased.
            ]]
         }
         values {
            anti_alias: bool; [[$true if the object is to be anti_aliased,
                                $false otherwise.]]
         }
      }
      @property clipees {
         get {
            [[Return a list of objects currently clipped by $obj.

              This returns the internal list handle that contains all
              objects clipped by the object $obj. If none are clipped by
              it, the call returns $null. This list is only valid until
              the clip list is changed and should be fetched again with
              another call to this function if any objects being clipped
              by this object are unclipped, clipped by a new object,
              deleted or get the clipper deleted. These operations will
              invalidate the list returned, so it should not be used
              anymore after that point. Any use of the list after this
              may have undefined results, possibly leading to crashes.

              See also @.clip and @.clip_unset.
            ]]
            legacy: null;
            return: iterator<Efl.Canvas.Object> @warn_unused; [[An iterator over the
                                             list of objects clipped by $obj.]]
         }
      }
      @property render_parent @protected {
         [[Gets the parent smart object of a given Evas object, if it has one.

           This can be different from @Efl.Object.parent because this one is
           used internally for rendering and the normal parent is what the
           user expects to be the parent.

           @since 1.18
         ]]
         get {
            legacy: evas_object_smart_parent_get;
         }
         values {
            parent: Efl.Canvas.Object; [[The parent smart object of $obj or $null.]]
         }
      }
      @property paragraph_direction {
         [[This handles text paragraph direction of the given object.
           Even if the given object is not textblock or text, its smart child
           objects can inherit the paragraph direction from the given object.
           The default paragraph direction is $inherit.
         ]]
         values {
            dir: Efl.Text.Bidirectional_Type; [[Paragraph direction for the given object.]]
         }
      }
      clipees_has @const {
         [[Test if any object is clipped by $obj.

           @since 1.8
         ]]
         return: bool @warn_unused;
      }
      key_grab {
         [[Requests $keyname key events be directed to $obj.

           Key grabs allow one or more objects to receive key events for
           specific key strokes even if other objects have focus. Whenever
           a key is grabbed, only the objects grabbing it will get the
           events for the given keys.

           $keyname is a platform dependent symbolic name for the key
           pressed (see \@ref Evas_Keys for more information).

           $modifiers and $not_modifiers are bit masks of all the
           modifiers that must and mustn't, respectively, be pressed along
           with $keyname key in order to trigger this new key grab.
           Modifiers can be things such as Shift and Ctrl as well as
           user defined types via \@ref evas_key_modifier_add. Retrieve
           them with \@ref evas_key_modifier_mask_get or use 0 for empty
           masks.

           $exclusive will make the given object the only one permitted to
           grab the given key. If given $true, subsequent calls on this
           function with different $obj arguments will fail, unless the key
           is ungrabbed again.

           Warning: Providing impossible modifier sets creates undefined
           behavior.

           See also @.key_ungrab, @.key_focus.get, @.key_focus.set,
           \@ref evas_focus_get, \@ref evas_key_modifier_add.
         ]]
         /* FIXME-doc
         Example code follows.
         @dontinclude evas-events.c
         @skip if (d.focus)
         @until else

         See the full example @ref Example_Evas_Events "here".
         */

         return: bool @warn_unused; [[$true if the call succeeded, $false otherwise.]]
         params {
            @in keyname: string @nonull; [[The key to request events for.]]
            @in modifiers: Evas.Modifier_Mask; [[A mask of modifiers that must be
                                                present to trigger the event.]]
            @in not_modifiers: Evas.Modifier_Mask; [[A mask of modifiers that must
                                                     not be present to trigger the event.]]
            @in exclusive: bool; [[Request that the $obj is the only object
                                   receiving the $keyname events.]]
         }
      }
      key_ungrab {
         [[Removes the grab on $keyname key events by $obj.

           Removes a key grab on $obj if $keyname, $modifiers, and
           $not_modifiers match.

           See also @.key_grab, @.key_focus.get, @.key_focus.set,
           \@ref evas_focus_get.
         ]]
         /* FIXME-doc
         Example code follows.
         @dontinclude evas-events.c
         @skip got here by key grabs
         @until }

         See the full example @ref Example_Evas_Events "here".
         */
         params {
            @in keyname: string @nonull; [[he key the grab is set for.]]
            @in modifiers: Evas.Modifier_Mask; [[A mask of modifiers that must be
                                                 present to trigger the event.]]
            @in not_modifiers: Evas.Modifier_Mask; [[A mask of modifiers that mus
                                                     not not be present to trigger
                                                     the event.
                                                   ]]
         }
      }
      clip_unset {
         [[Disable/cease clipping on a clipped $obj object.

           This function disables clipping for the object $obj, if it was
           already clipped, i.e., its visibility and color get detached from
           the previous clipper. If it wasn't, this has no effect. The
           object $obj must be a valid Evas_Object.

           See also @.clip.set, @.clipees.get and @.clip.get.
         ]]
      }
      @property no_render {
         get {
            [[Returns the state of the "no-render" flag, which means, when
              true, that an object should never be rendered on the canvas.

              This flag can be used to avoid rendering visible clippers on
              the canvas, even if they currently don't clip any object.

              @since 1.15
            ]]
            legacy: null;
         }
         set {
            [[Disable all rendering on the canvas.

              This flag will be used to indicate to Evas that this object
              should never be rendered on the canvas under any
              circurmstances. In particular, this is useful to avoid
              drawing clipper objects (or masks) even when they don't
              clip any object. This can also be used to replace the old
              source_visible flag with proxy objects.

              This is different to the visible property, as even visible
              objects marked as "no-render" will never appear on screen.
              But those objects can still be used as proxy sources or
              clippers. When hidden, all "no-render" objects will
              completely disappear from the canvas, and hide their
              clippees or be invisible when used as proxy sources.

              @since 1.15
            ]]
            legacy: null;
         }
         values {
            enable: bool; [[Enable "no-render" mode.]]
         }
      }
   }
   constructors {
      .legacy_ctor;
      .type;
   }
   implements {
      Efl.Object.constructor;
      Efl.Object.destructor;
      Efl.Object.dbg_info_get;
      Efl.Object.provider_find;
      Efl.Gfx.visible.set;
      Efl.Gfx.visible.get;
      Efl.Gfx.color.set;
      Efl.Gfx.color.get;
      Efl.Gfx.color_part.set;
      Efl.Gfx.color_part.get;
      Efl.Gfx.geometry.set;
      Efl.Gfx.geometry.get;
      Efl.Gfx.position.set;
      Efl.Gfx.position.get;
      Efl.Gfx.size.set;
      Efl.Gfx.size.get;
      Efl.Gfx.Stack.layer.set;
      Efl.Gfx.Stack.layer.get;
      Efl.Gfx.Stack.below.get;
      Efl.Gfx.Stack.above.get;
      Efl.Gfx.Stack.stack_below;
      Efl.Gfx.Stack.stack_above;
      Efl.Gfx.Stack.raise;
      Efl.Gfx.Stack.lower;
      Efl.Gfx.Size.Hint.hint_aspect.set;
      Efl.Gfx.Size.Hint.hint_aspect.get;
      Efl.Gfx.Size.Hint.hint_align.set;
      Efl.Gfx.Size.Hint.hint_align.get;
      Efl.Gfx.Size.Hint.hint_combined_min.get;
      Efl.Gfx.Size.Hint.hint_display_mode.set;
      Efl.Gfx.Size.Hint.hint_display_mode.get;
      Efl.Gfx.Size.Hint.hint_restricted_min.set;
      Efl.Gfx.Size.Hint.hint_restricted_min.get;
      Efl.Gfx.Size.Hint.hint_min.set;
      Efl.Gfx.Size.Hint.hint_min.get;
      Efl.Gfx.Size.Hint.hint_max.set;
      Efl.Gfx.Size.Hint.hint_max.get;
      Efl.Gfx.Size.Hint.hint_margin.set;
      Efl.Gfx.Size.Hint.hint_margin.get;
      Efl.Gfx.Size.Hint.hint_request.set;
      Efl.Gfx.Size.Hint.hint_request.get;
      Efl.Gfx.Size.Hint.hint_weight.set;
      Efl.Gfx.Size.Hint.hint_weight.get;
      Efl.Gfx.Map.map_enable.set;
      Efl.Gfx.Map.map_enable.get;
   }
   events {
       mouse,in @beta; [[Mouse In Event ]]
       mouse,out @beta; [[Mouse Out Event ]]
       mouse,down @beta; [[Mouse Button Down Event ]]
       mouse,up @beta; [[Mouse Button Up Event ]]
       mouse,move @beta; [[Mouse Move Event ]]
       mouse,wheel @beta; [[Mouse Wheel Event ]]
       multi,down @beta; [[Mouse-touch Down Event ]]
       multi,up @beta; [[Mouse-touch Up Event ]]
       multi,move @beta; [[Multi-touch Move Event ]]
       free @beta; [[Object Being Freed (Called after Del) ]]
       key,down @beta; [[Key Press Event ]]
       key,up @beta; [[Key Release Event ]]
       focus,in; [[Focus In Event ]]
       focus,out; [[Focus Out Event ]]
       del @beta; [[Object Being Deleted (called before Free) ]]
       hold @beta; [[Events go on/off hold ]]
   }
}