godotengine/godot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
e39875a20d
godot/scene/gui/control.h
Yuri Sizov 58126e479c Introduce the concept of global theme contexts 
This commit adds the default theme context, which replaces
the need to manually check the project and the default theme
all the time; simplifies related code.

It also adds framework for custom theme contexts, to be used
by the editor. Custom contexts can be attached to any node,
and not necessarily a GUI/Window node. Contexts do no break
theme inheritance and only define which global themes a node
uses as a fallback.

Contexts propagate NOTIFICATION_THEME_CHANGED when one of their
global themes changes. This ensures that global themes act just
like themes assigned to individual nodes and can be previewed
live in the editor.
2023-09-06 19:40:43 +02:00

654 lines
22 KiB
C++
Raw Blame History

/**************************************************************************/
/* control.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef CONTROL_H
#define CONTROL_H
#include "core/math/transform_2d.h"
#include "core/object/gdvirtual.gen.inc"
#include "core/templates/rid.h"
#include "scene/main/canvas_item.h"
#include "scene/main/timer.h"
#include "scene/resources/theme.h"
class Viewport;
class Label;
class Panel;
class ThemeOwner;
class ThemeContext;
class Control : public CanvasItem {
GDCLASS(Control, CanvasItem);
public:
enum Anchor {
ANCHOR_BEGIN = 0,
ANCHOR_END = 1
};
enum GrowDirection {
GROW_DIRECTION_BEGIN,
GROW_DIRECTION_END,
GROW_DIRECTION_BOTH
};
enum FocusMode {
FOCUS_NONE,
FOCUS_CLICK,
FOCUS_ALL
};
enum SizeFlags {
SIZE_SHRINK_BEGIN = 0,
SIZE_FILL = 1,
SIZE_EXPAND = 2,
SIZE_SHRINK_CENTER = 4,
SIZE_SHRINK_END = 8,
SIZE_EXPAND_FILL = SIZE_EXPAND | SIZE_FILL,
};
enum MouseFilter {
MOUSE_FILTER_STOP,
MOUSE_FILTER_PASS,
MOUSE_FILTER_IGNORE
};
enum CursorShape {
CURSOR_ARROW,
CURSOR_IBEAM,
CURSOR_POINTING_HAND,
CURSOR_CROSS,
CURSOR_WAIT,
CURSOR_BUSY,
CURSOR_DRAG,
CURSOR_CAN_DROP,
CURSOR_FORBIDDEN,
CURSOR_VSIZE,
CURSOR_HSIZE,
CURSOR_BDIAGSIZE,
CURSOR_FDIAGSIZE,
CURSOR_MOVE,
CURSOR_VSPLIT,
CURSOR_HSPLIT,
CURSOR_HELP,
CURSOR_MAX
};
enum LayoutPreset {
PRESET_TOP_LEFT,
PRESET_TOP_RIGHT,
PRESET_BOTTOM_LEFT,
PRESET_BOTTOM_RIGHT,
PRESET_CENTER_LEFT,
PRESET_CENTER_TOP,
PRESET_CENTER_RIGHT,
PRESET_CENTER_BOTTOM,
PRESET_CENTER,
PRESET_LEFT_WIDE,
PRESET_TOP_WIDE,
PRESET_RIGHT_WIDE,
PRESET_BOTTOM_WIDE,
PRESET_VCENTER_WIDE,
PRESET_HCENTER_WIDE,
PRESET_FULL_RECT
};
enum LayoutPresetMode {
PRESET_MODE_MINSIZE,
PRESET_MODE_KEEP_WIDTH,
PRESET_MODE_KEEP_HEIGHT,
PRESET_MODE_KEEP_SIZE
};
enum LayoutMode {
LAYOUT_MODE_POSITION,
LAYOUT_MODE_ANCHORS,
LAYOUT_MODE_CONTAINER,
LAYOUT_MODE_UNCONTROLLED,
};
enum LayoutDirection {
LAYOUT_DIRECTION_INHERITED,
LAYOUT_DIRECTION_LOCALE,
LAYOUT_DIRECTION_LTR,
LAYOUT_DIRECTION_RTL
};
enum TextDirection {
TEXT_DIRECTION_AUTO = TextServer::DIRECTION_AUTO,
TEXT_DIRECTION_LTR = TextServer::DIRECTION_LTR,
TEXT_DIRECTION_RTL = TextServer::DIRECTION_RTL,
TEXT_DIRECTION_INHERITED = TextServer::DIRECTION_INHERITED,
};
private:
struct CComparator {
bool operator()(const Control *p_a, const Control *p_b) const {
if (p_a->get_canvas_layer() == p_b->get_canvas_layer()) {
return p_b->is_greater_than(p_a);
}
return p_a->get_canvas_layer() < p_b->get_canvas_layer();
}
};
// This Data struct is to avoid namespace pollution in derived classes.
struct Data {
bool initialized = false;
// Global relations.
List<Control *>::Element *RI = nullptr;
Control *parent_control = nullptr;
Window *parent_window = nullptr;
CanvasItem *parent_canvas_item = nullptr;
Callable forward_drag;
Callable forward_can_drop;
Callable forward_drop;
// Positioning and sizing.
LayoutMode stored_layout_mode = LayoutMode::LAYOUT_MODE_POSITION;
bool stored_use_custom_anchors = false;
real_t offset[4] = { 0.0, 0.0, 0.0, 0.0 };
real_t anchor[4] = { ANCHOR_BEGIN, ANCHOR_BEGIN, ANCHOR_BEGIN, ANCHOR_BEGIN };
FocusMode focus_mode = FOCUS_NONE;
GrowDirection h_grow = GROW_DIRECTION_END;
GrowDirection v_grow = GROW_DIRECTION_END;
real_t rotation = 0.0;
Vector2 scale = Vector2(1, 1);
Vector2 pivot_offset;
Point2 pos_cache;
Size2 size_cache;
Size2 minimum_size_cache;
bool minimum_size_valid = false;
Size2 last_minimum_size;
bool updating_last_minimum_size = false;
bool block_minimum_size_adjust = false;
bool size_warning = true;
// Container sizing.
BitField<SizeFlags> h_size_flags = SIZE_FILL;
BitField<SizeFlags> v_size_flags = SIZE_FILL;
real_t expand = 1.0;
Point2 custom_minimum_size;
// Input events and rendering.
MouseFilter mouse_filter = MOUSE_FILTER_STOP;
bool force_pass_scroll_events = true;
bool clip_contents = false;
bool disable_visibility_clip = false;
CursorShape default_cursor = CURSOR_ARROW;
// Focus.
NodePath focus_neighbor[4];
NodePath focus_next;
NodePath focus_prev;
ObjectID shortcut_context;
// Theming.
ThemeOwner *theme_owner = nullptr;
Ref<Theme> theme;
StringName theme_type_variation;
bool bulk_theme_override = false;
Theme::ThemeIconMap theme_icon_override;
Theme::ThemeStyleMap theme_style_override;
Theme::ThemeFontMap theme_font_override;
Theme::ThemeFontSizeMap theme_font_size_override;
Theme::ThemeColorMap theme_color_override;
Theme::ThemeConstantMap theme_constant_override;
mutable HashMap<StringName, Theme::ThemeIconMap> theme_icon_cache;
mutable HashMap<StringName, Theme::ThemeStyleMap> theme_style_cache;
mutable HashMap<StringName, Theme::ThemeFontMap> theme_font_cache;
mutable HashMap<StringName, Theme::ThemeFontSizeMap> theme_font_size_cache;
mutable HashMap<StringName, Theme::ThemeColorMap> theme_color_cache;
mutable HashMap<StringName, Theme::ThemeConstantMap> theme_constant_cache;
// Internationalization.
LayoutDirection layout_dir = LAYOUT_DIRECTION_INHERITED;
bool is_rtl_dirty = true;
bool is_rtl = false;
bool auto_translate = true;
bool localize_numeral_system = true;
// Extra properties.
String tooltip;
} data;
// Dynamic properties.
static constexpr unsigned properties_managed_by_container_count = 12;
static String properties_managed_by_container[properties_managed_by_container_count];
// Global relations.
friend class Viewport;
// Positioning and sizing.
void _update_canvas_item_transform();
Transform2D _get_internal_transform() const;
void _set_anchor(Side p_side, real_t p_anchor);
void _set_position(const Point2 &p_point);
void _set_global_position(const Point2 &p_point);
void _set_size(const Size2 &p_size);
void _compute_offsets(Rect2 p_rect, const real_t p_anchors[4], real_t (&r_offsets)[4]);
void _compute_anchors(Rect2 p_rect, const real_t p_offsets[4], real_t (&r_anchors)[4]);
void _set_layout_mode(LayoutMode p_mode);
void _update_layout_mode();
LayoutMode _get_layout_mode() const;
LayoutMode _get_default_layout_mode() const;
void _set_anchors_layout_preset(int p_preset);
int _get_anchors_layout_preset() const;
void _update_minimum_size_cache();
void _update_minimum_size();
void _size_changed();
void _top_level_changed() override {} // Controls don't need to do anything, only other CanvasItems.
void _top_level_changed_on_parent() override;
void _clear_size_warning();
// Input events.
void _call_gui_input(const Ref<InputEvent> &p_event);
// Focus.
void _window_find_focus_neighbor(const Vector2 &p_dir, Node *p_at, const Point2 *p_points, real_t p_min, real_t &r_closest_dist, Control **r_closest);
Control *_get_focus_neighbor(Side p_side, int p_count = 0);
// Theming.
void _theme_changed();
void _notify_theme_override_changed();
void _invalidate_theme_cache();
// Extra properties.
String get_tooltip_text() const;
protected:
// Dynamic properties.
bool _set(const StringName &p_name, const Variant &p_value);
bool _get(const StringName &p_name, Variant &r_ret) const;
void _get_property_list(List<PropertyInfo> *p_list) const;
void _validate_property(PropertyInfo &p_property) const;
bool _property_can_revert(const StringName &p_name) const;
bool _property_get_revert(const StringName &p_name, Variant &r_property) const;
// Theming.
virtual void _update_theme_item_cache();
// Internationalization.
virtual TypedArray<Vector3i> structured_text_parser(TextServer::StructuredTextParser p_parser_type, const Array &p_args, const String &p_text) const;
// Base object overrides.
void _notification(int p_notification);
static void _bind_methods();
// Exposed virtual methods.
GDVIRTUAL1RC(bool, _has_point, Vector2)
GDVIRTUAL2RC(TypedArray<Vector3i>, _structured_text_parser, Array, String)
GDVIRTUAL0RC(Vector2, _get_minimum_size)
GDVIRTUAL1RC(String, _get_tooltip, Vector2)
GDVIRTUAL1R(Variant, _get_drag_data, Vector2)
GDVIRTUAL2RC(bool, _can_drop_data, Vector2, Variant)
GDVIRTUAL2(_drop_data, Vector2, Variant)
GDVIRTUAL1RC(Object *, _make_custom_tooltip, String)
GDVIRTUAL1(_gui_input, Ref<InputEvent>)
public:
enum {
NOTIFICATION_RESIZED = 40,
NOTIFICATION_MOUSE_ENTER = 41,
NOTIFICATION_MOUSE_EXIT = 42,
NOTIFICATION_FOCUS_ENTER = 43,
NOTIFICATION_FOCUS_EXIT = 44,
NOTIFICATION_THEME_CHANGED = 45,
NOTIFICATION_SCROLL_BEGIN = 47,
NOTIFICATION_SCROLL_END = 48,
NOTIFICATION_LAYOUT_DIRECTION_CHANGED = 49,
};
// Editor plugin interoperability.
// TODO: Decouple controls from their editor plugin and get rid of this.
#ifdef TOOLS_ENABLED
virtual Dictionary _edit_get_state() const override;
virtual void _edit_set_state(const Dictionary &p_state) override;
virtual void _edit_set_position(const Point2 &p_position) override;
virtual Point2 _edit_get_position() const override;
virtual void _edit_set_scale(const Size2 &p_scale) override;
virtual Size2 _edit_get_scale() const override;
virtual void _edit_set_rect(const Rect2 &p_edit_rect) override;
virtual Rect2 _edit_get_rect() const override;
virtual bool _edit_use_rect() const override;
virtual void _edit_set_rotation(real_t p_rotation) override;
virtual real_t _edit_get_rotation() const override;
virtual bool _edit_use_rotation() const override;
virtual void _edit_set_pivot(const Point2 &p_pivot) override;
virtual Point2 _edit_get_pivot() const override;
virtual bool _edit_use_pivot() const override;
virtual Size2 _edit_get_minimum_size() const override;
#endif
virtual void reparent(Node *p_parent, bool p_keep_global_transform = true) override;
// Editor integration.
virtual void get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const override;
PackedStringArray get_configuration_warnings() const override;
virtual bool is_text_field() const;
// Global relations.
bool is_top_level_control() const;
Control *get_parent_control() const;
Window *get_parent_window() const;
Control *get_root_parent_control() const;
Size2 get_parent_area_size() const;
Rect2 get_parent_anchorable_rect() const;
// Positioning and sizing.
virtual Transform2D get_transform() const override;
void set_anchor(Side p_side, real_t p_anchor, bool p_keep_offset = true, bool p_push_opposite_anchor = true);
real_t get_anchor(Side p_side) const;
void set_offset(Side p_side, real_t p_value);
real_t get_offset(Side p_side) const;
void set_anchor_and_offset(Side p_side, real_t p_anchor, real_t p_pos, bool p_push_opposite_anchor = true);
// TODO: Rename to set_begin/end_offsets ?
void set_begin(const Point2 &p_point);
Point2 get_begin() const;
void set_end(const Point2 &p_point);
Point2 get_end() const;
void set_h_grow_direction(GrowDirection p_direction);
GrowDirection get_h_grow_direction() const;
void set_v_grow_direction(GrowDirection p_direction);
GrowDirection get_v_grow_direction() const;
void set_anchors_preset(LayoutPreset p_preset, bool p_keep_offsets = true);
void set_offsets_preset(LayoutPreset p_preset, LayoutPresetMode p_resize_mode = PRESET_MODE_MINSIZE, int p_margin = 0);
void set_anchors_and_offsets_preset(LayoutPreset p_preset, LayoutPresetMode p_resize_mode = PRESET_MODE_MINSIZE, int p_margin = 0);
void set_grow_direction_preset(LayoutPreset p_preset);
void set_position(const Point2 &p_point, bool p_keep_offsets = false);
void set_global_position(const Point2 &p_point, bool p_keep_offsets = false);
Point2 get_position() const;
Point2 get_global_position() const;
Point2 get_screen_position() const;
void set_size(const Size2 &p_size, bool p_keep_offsets = false);
Size2 get_size() const;
void reset_size();
void set_rect(const Rect2 &p_rect); // Reset anchors to begin and set rect, for faster container children sorting.
Rect2 get_rect() const;
Rect2 get_global_rect() const;
Rect2 get_screen_rect() const;
Rect2 get_anchorable_rect() const override;
void set_scale(const Vector2 &p_scale);
Vector2 get_scale() const;
void set_rotation(real_t p_radians);
void set_rotation_degrees(real_t p_degrees);
real_t get_rotation() const;
real_t get_rotation_degrees() const;
void set_pivot_offset(const Vector2 &p_pivot);
Vector2 get_pivot_offset() const;
void update_minimum_size();
void set_block_minimum_size_adjust(bool p_block);
virtual Size2 get_minimum_size() const;
virtual Size2 get_combined_minimum_size() const;
void set_custom_minimum_size(const Size2 &p_custom);
Size2 get_custom_minimum_size() const;
// Container sizing.
void set_h_size_flags(BitField<SizeFlags> p_flags);
BitField<SizeFlags> get_h_size_flags() const;
void set_v_size_flags(BitField<SizeFlags> p_flags);
BitField<SizeFlags> get_v_size_flags() const;
void set_stretch_ratio(real_t p_ratio);
real_t get_stretch_ratio() const;
// Input events.
virtual void gui_input(const Ref<InputEvent> &p_event);
void accept_event();
virtual bool has_point(const Point2 &p_point) const;
void set_mouse_filter(MouseFilter p_filter);
MouseFilter get_mouse_filter() const;
void set_force_pass_scroll_events(bool p_force_pass_scroll_events);
bool is_force_pass_scroll_events() const;
void warp_mouse(const Point2 &p_position);
bool is_focus_owner_in_shortcut_context() const;
void set_shortcut_context(const Node *p_node);
Node *get_shortcut_context() const;
// Drag and drop handling.
virtual void set_drag_forwarding(const Callable &p_drag, const Callable &p_can_drop, const Callable &p_drop);
virtual Variant get_drag_data(const Point2 &p_point);
virtual bool can_drop_data(const Point2 &p_point, const Variant &p_data) const;
virtual void drop_data(const Point2 &p_point, const Variant &p_data);
void set_drag_preview(Control *p_control);
void force_drag(const Variant &p_data, Control *p_control);
bool is_drag_successful() const;
// Focus.
void set_focus_mode(FocusMode p_focus_mode);
FocusMode get_focus_mode() const;
bool has_focus() const;
void grab_focus();
void grab_click_focus();
void release_focus();
Control *find_next_valid_focus() const;
Control *find_prev_valid_focus() const;
void set_focus_neighbor(Side p_side, const NodePath &p_neighbor);
NodePath get_focus_neighbor(Side p_side) const;
void set_focus_next(const NodePath &p_next);
NodePath get_focus_next() const;
void set_focus_previous(const NodePath &p_prev);
NodePath get_focus_previous() const;
// Rendering.
void set_default_cursor_shape(CursorShape p_shape);
CursorShape get_default_cursor_shape() const;
virtual CursorShape get_cursor_shape(const Point2 &p_pos = Point2i()) const;
void set_clip_contents(bool p_clip);
bool is_clipping_contents();
void set_disable_visibility_clip(bool p_ignore);
bool is_visibility_clip_disabled() const;
// Theming.
void set_theme_owner_node(Node *p_node);
Node *get_theme_owner_node() const;
bool has_theme_owner_node() const;
void set_theme_context(ThemeContext *p_context, bool p_propagate = true);
void set_theme(const Ref<Theme> &p_theme);
Ref<Theme> get_theme() const;
void set_theme_type_variation(const StringName &p_theme_type);
StringName get_theme_type_variation() const;
void begin_bulk_theme_override();
void end_bulk_theme_override();
void add_theme_icon_override(const StringName &p_name, const Ref<Texture2D> &p_icon);
void add_theme_style_override(const StringName &p_name, const Ref<StyleBox> &p_style);
void add_theme_font_override(const StringName &p_name, const Ref<Font> &p_font);
void add_theme_font_size_override(const StringName &p_name, int p_font_size);
void add_theme_color_override(const StringName &p_name, const Color &p_color);
void add_theme_constant_override(const StringName &p_name, int p_constant);
void remove_theme_icon_override(const StringName &p_name);
void remove_theme_style_override(const StringName &p_name);
void remove_theme_font_override(const StringName &p_name);
void remove_theme_font_size_override(const StringName &p_name);
void remove_theme_color_override(const StringName &p_name);
void remove_theme_constant_override(const StringName &p_name);
Ref<Texture2D> get_theme_icon(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
Ref<StyleBox> get_theme_stylebox(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
Ref<Font> get_theme_font(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
int get_theme_font_size(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
Color get_theme_color(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
int get_theme_constant(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
#ifdef TOOLS_ENABLED
Ref<Texture2D> get_editor_theme_icon(const StringName &p_name) const;
#endif
bool has_theme_icon_override(const StringName &p_name) const;
bool has_theme_stylebox_override(const StringName &p_name) const;
bool has_theme_font_override(const StringName &p_name) const;
bool has_theme_font_size_override(const StringName &p_name) const;
bool has_theme_color_override(const StringName &p_name) const;
bool has_theme_constant_override(const StringName &p_name) const;
bool has_theme_icon(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
bool has_theme_stylebox(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
bool has_theme_font(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
bool has_theme_font_size(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
bool has_theme_color(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
bool has_theme_constant(const StringName &p_name, const StringName &p_theme_type = StringName()) const;
float get_theme_default_base_scale() const;
Ref<Font> get_theme_default_font() const;
int get_theme_default_font_size() const;
// Internationalization.
void set_layout_direction(LayoutDirection p_direction);
LayoutDirection get_layout_direction() const;
virtual bool is_layout_rtl() const;
void set_localize_numeral_system(bool p_enable);
bool is_localizing_numeral_system() const;
void set_auto_translate(bool p_enable);
bool is_auto_translating() const;
_FORCE_INLINE_ String atr(const String p_string) const {
return is_auto_translating() ? tr(p_string) : p_string;
};
// Extra properties.
void set_tooltip_text(const String &text);
virtual String get_tooltip(const Point2 &p_pos) const;
virtual Control *make_custom_tooltip(const String &p_text) const;
Control();
~Control();
};
VARIANT_ENUM_CAST(Control::FocusMode);
VARIANT_BITFIELD_CAST(Control::SizeFlags);
VARIANT_ENUM_CAST(Control::CursorShape);
VARIANT_ENUM_CAST(Control::LayoutPreset);
VARIANT_ENUM_CAST(Control::LayoutPresetMode);
VARIANT_ENUM_CAST(Control::MouseFilter);
VARIANT_ENUM_CAST(Control::GrowDirection);
VARIANT_ENUM_CAST(Control::Anchor);
VARIANT_ENUM_CAST(Control::LayoutMode);
VARIANT_ENUM_CAST(Control::LayoutDirection);
VARIANT_ENUM_CAST(Control::TextDirection);
// G = get_drag_data_fw, C = can_drop_data_fw, D = drop_data_fw, U = underscore
#define SET_DRAG_FORWARDING_CD(from, to) from->set_drag_forwarding(Callable(), callable_mp(this, &to::can_drop_data_fw).bind(from), callable_mp(this, &to::drop_data_fw).bind(from));
#define SET_DRAG_FORWARDING_CDU(from, to) from->set_drag_forwarding(Callable(), callable_mp(this, &to::_can_drop_data_fw).bind(from), callable_mp(this, &to::_drop_data_fw).bind(from));
#define SET_DRAG_FORWARDING_GCD(from, to) from->set_drag_forwarding(callable_mp(this, &to::get_drag_data_fw).bind(from), callable_mp(this, &to::can_drop_data_fw).bind(from), callable_mp(this, &to::drop_data_fw).bind(from));
#define SET_DRAG_FORWARDING_GCDU(from, to) from->set_drag_forwarding(callable_mp(this, &to::_get_drag_data_fw).bind(from), callable_mp(this, &to::_can_drop_data_fw).bind(from), callable_mp(this, &to::_drop_data_fw).bind(from));
#endif // CONTROL_H
Reference in New Issue View Git Blame Copy Permalink