forked from AuroraMiddleware/gtk
a5949960bc
Instead of storing the active items as we go, compute the affected items whenever the rubberband changes and in particular when the rubberband ends. That way, the rubberband is guaranteed to select a rectangle even after scrolling very far. This is achieved by having a get_items_in_rect() vfunc that selects all the items in the rubberbanded rectangle and returns them as a bitset.
118 lines
7.8 KiB
C
118 lines
7.8 KiB
C
/*
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* Copyright © 2019 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_LIST_BASE_PRIVATE_H__
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#define __GTK_LIST_BASE_PRIVATE_H__
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#include "gtklistbase.h"
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#include "gtklistitemmanagerprivate.h"
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#include "gtkprivate.h"
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struct _GtkListBase
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{
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GtkWidget parent_instance;
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};
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struct _GtkListBaseClass
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{
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GtkWidgetClass parent_class;
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const char * list_item_name;
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gsize list_item_size;
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gsize list_item_augment_size;
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GtkRbTreeAugmentFunc list_item_augment_func;
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void (* adjustment_value_changed) (GtkListBase *self,
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GtkOrientation orientation);
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gboolean (* get_allocation_along) (GtkListBase *self,
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guint pos,
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int *offset,
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int *size);
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gboolean (* get_allocation_across) (GtkListBase *self,
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guint pos,
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int *offset,
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int *size);
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gboolean (* get_position_from_allocation) (GtkListBase *self,
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int across,
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int along,
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guint *pos,
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cairo_rectangle_int_t *area);
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GtkBitset * (* get_items_in_rect) (GtkListBase *self,
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const cairo_rectangle_int_t *rect);
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guint (* move_focus_along) (GtkListBase *self,
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guint pos,
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int steps);
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guint (* move_focus_across) (GtkListBase *self,
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guint pos,
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int steps);
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};
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GtkOrientation gtk_list_base_get_orientation (GtkListBase *self);
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#define gtk_list_base_get_opposite_orientation(self) OPPOSITE_ORIENTATION(gtk_list_base_get_orientation(self))
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guint gtk_list_base_get_focus_position (GtkListBase *self);
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GtkListItemManager * gtk_list_base_get_manager (GtkListBase *self);
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GtkScrollablePolicy gtk_list_base_get_scroll_policy (GtkListBase *self,
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GtkOrientation orientation);
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guint gtk_list_base_get_n_items (GtkListBase *self);
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GListModel * gtk_list_base_get_model (GtkListBase *self);
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gboolean gtk_list_base_set_model (GtkListBase *self,
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GListModel *model);
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void gtk_list_base_update_adjustments (GtkListBase *self,
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int total_across,
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int total_along,
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int page_across,
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int page_along,
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int *across,
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int *along);
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guint gtk_list_base_get_anchor (GtkListBase *self);
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void gtk_list_base_set_anchor (GtkListBase *self,
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guint anchor_pos,
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double anchor_align_across,
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GtkPackType anchor_side_across,
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double anchor_align_along,
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GtkPackType anchor_side_along);
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void gtk_list_base_set_anchor_max_widgets (GtkListBase *self,
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guint n_center,
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guint n_above_below);
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void gtk_list_base_select_item (GtkListBase *self,
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guint pos,
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gboolean modify,
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gboolean extend);
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gboolean gtk_list_base_grab_focus_on_item (GtkListBase *self,
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guint pos,
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gboolean select,
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gboolean modify,
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gboolean extend);
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void gtk_list_base_set_enable_rubberband (GtkListBase *self,
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gboolean enable);
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gboolean gtk_list_base_get_enable_rubberband (GtkListBase *self);
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void gtk_list_base_allocate_rubberband (GtkListBase *self);
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void gtk_list_base_size_allocate_child (GtkListBase *self,
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GtkWidget *child,
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int x,
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int y,
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int width,
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int height);
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#endif /* __GTK_LIST_BASE_PRIVATE_H__ */
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