forked from AuroraMiddleware/gtk
listbase: Add rubberband selection
Implement the typical rubberband selection, including autoscroll. This is only useful with multiselection, and not very compatible with single-click-activate. Therefore, it is not enabled by default, and needs to be turned on explicitly.
This commit is contained in:
parent
28f6e27276
commit
a0f04bdcf3
@ -28,6 +28,12 @@
|
||||
#include "gtkscrollable.h"
|
||||
#include "gtksingleselection.h"
|
||||
#include "gtktypebuiltins.h"
|
||||
#include "gtkgesturedrag.h"
|
||||
#include "gtkwidgetprivate.h"
|
||||
#include "gtkcssnodeprivate.h"
|
||||
#include "gtkstylecontextprivate.h"
|
||||
#include "gtksnapshot.h"
|
||||
#include "gtkmultiselection.h"
|
||||
|
||||
typedef struct _GtkListBasePrivate GtkListBasePrivate;
|
||||
|
||||
@ -50,6 +56,18 @@ struct _GtkListBasePrivate
|
||||
GtkListItemTracker *selected;
|
||||
/* the item that has input focus */
|
||||
GtkListItemTracker *focus;
|
||||
|
||||
gboolean enable_rubberband;
|
||||
gboolean doing_rubberband;
|
||||
double rb_x1;
|
||||
double rb_y1;
|
||||
double rb_x2;
|
||||
double rb_y2;
|
||||
GtkGesture *drag_gesture;
|
||||
GtkCssNode *rubberband_node;
|
||||
GtkSelectionModel *old_selection;
|
||||
gboolean modify;
|
||||
gboolean extend;
|
||||
};
|
||||
|
||||
enum
|
||||
@ -1061,6 +1079,20 @@ gtk_list_base_add_custom_move_binding (GtkWidgetClass *widget_class,
|
||||
"(bbb)", TRUE, TRUE, TRUE);
|
||||
}
|
||||
|
||||
static void gtk_list_base_snapshot_rubberband (GtkListBase *self,
|
||||
GtkSnapshot *snapshot);
|
||||
|
||||
static void
|
||||
gtk_list_base_snapshot (GtkWidget *widget,
|
||||
GtkSnapshot *snapshot)
|
||||
{
|
||||
GtkListBase *self = GTK_LIST_BASE (widget);
|
||||
|
||||
GTK_WIDGET_CLASS (gtk_list_base_parent_class)->snapshot (widget, snapshot);
|
||||
|
||||
gtk_list_base_snapshot_rubberband (self, snapshot);
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_class_init (GtkListBaseClass *klass)
|
||||
{
|
||||
@ -1069,6 +1101,7 @@ gtk_list_base_class_init (GtkListBaseClass *klass)
|
||||
gpointer iface;
|
||||
|
||||
widget_class->focus = gtk_list_base_focus;
|
||||
widget_class->snapshot = gtk_list_base_snapshot;
|
||||
|
||||
gobject_class->dispose = gtk_list_base_dispose;
|
||||
gobject_class->get_property = gtk_list_base_get_property;
|
||||
@ -1186,6 +1219,258 @@ gtk_list_base_class_init (GtkListBaseClass *klass)
|
||||
gtk_widget_class_add_binding_action (widget_class, GDK_KEY_backslash, GDK_CONTROL_MASK, "list.unselect-all", NULL);
|
||||
}
|
||||
|
||||
static void gtk_list_base_update_rubberband_selection (GtkListBase *self);
|
||||
|
||||
static void
|
||||
gtk_list_base_start_rubberband (GtkListBase *self,
|
||||
double x,
|
||||
double y,
|
||||
gboolean modify,
|
||||
gboolean extend)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
GtkCssNode *widget_node;
|
||||
double value_x, value_y;
|
||||
GtkSelectionModel *selection;
|
||||
|
||||
if (priv->doing_rubberband)
|
||||
return;
|
||||
|
||||
value_x = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_HORIZONTAL]);
|
||||
value_y = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_VERTICAL]);
|
||||
|
||||
priv->rb_x1 = priv->rb_x2 = x + value_x;
|
||||
priv->rb_y1 = priv->rb_y2 = y + value_y;
|
||||
|
||||
priv->modify = modify;
|
||||
priv->extend = extend;
|
||||
|
||||
widget_node = gtk_widget_get_css_node (GTK_WIDGET (self));
|
||||
priv->rubberband_node = gtk_css_node_new ();
|
||||
gtk_css_node_set_name (priv->rubberband_node,
|
||||
g_quark_from_static_string ("rubberband"));
|
||||
gtk_css_node_set_parent (priv->rubberband_node, widget_node);
|
||||
gtk_css_node_set_state (priv->rubberband_node, gtk_css_node_get_state (widget_node));
|
||||
g_object_unref (priv->rubberband_node);
|
||||
|
||||
selection = gtk_list_item_manager_get_model (priv->item_manager);
|
||||
|
||||
if (modify)
|
||||
priv->old_selection = GTK_SELECTION_MODEL (gtk_multi_selection_copy (selection));
|
||||
|
||||
priv->doing_rubberband = TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_stop_rubberband (GtkListBase *self)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
|
||||
if (!priv->doing_rubberband)
|
||||
return;
|
||||
|
||||
priv->doing_rubberband = FALSE;
|
||||
gtk_css_node_set_parent (priv->rubberband_node, NULL);
|
||||
priv->rubberband_node = NULL;
|
||||
|
||||
g_clear_object (&priv->old_selection);
|
||||
|
||||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||||
}
|
||||
|
||||
#define SCROLL_EDGE_SIZE 15
|
||||
|
||||
static void
|
||||
gtk_list_base_update_rubberband (GtkListBase *self,
|
||||
double x,
|
||||
double y)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
double value_x, value_y;
|
||||
|
||||
if (!priv->doing_rubberband)
|
||||
return;
|
||||
|
||||
value_x = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_HORIZONTAL]);
|
||||
value_y = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_VERTICAL]);
|
||||
|
||||
priv->rb_x2 = x + value_x;
|
||||
priv->rb_y2 = y + value_y;
|
||||
|
||||
gtk_list_base_update_rubberband_selection (self);
|
||||
|
||||
gtk_widget_queue_draw (GTK_WIDGET (self));
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_update_rubberband_selection (GtkListBase *self)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
GdkRectangle rect;
|
||||
GdkRectangle alloc;
|
||||
double value_x, value_y;
|
||||
GtkSelectionModel *model;
|
||||
GtkListItemManagerItem *item;
|
||||
|
||||
value_x = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_HORIZONTAL]);
|
||||
value_y = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_VERTICAL]);
|
||||
|
||||
rect.x = MIN (priv->rb_x1, priv->rb_x2) - value_x;
|
||||
rect.y = MIN (priv->rb_y1, priv->rb_y2) - value_y;
|
||||
rect.width = ABS (priv->rb_x1 - priv->rb_x2) + 1;
|
||||
rect.height = ABS (priv->rb_y1 - priv->rb_y2) + 1;
|
||||
|
||||
model = gtk_list_item_manager_get_model (priv->item_manager);
|
||||
|
||||
for (item = gtk_list_item_manager_get_first (priv->item_manager);
|
||||
item != NULL;
|
||||
item = gtk_rb_tree_node_get_next (item))
|
||||
{
|
||||
guint pos;
|
||||
gboolean was_selected, selected;
|
||||
|
||||
if (!item->widget)
|
||||
continue;
|
||||
|
||||
pos = gtk_list_item_manager_get_item_position (priv->item_manager, item);
|
||||
|
||||
gtk_widget_get_allocation (item->widget, &alloc);
|
||||
|
||||
selected = gdk_rectangle_intersect (&rect, &alloc, &alloc);
|
||||
|
||||
if (priv->modify)
|
||||
{
|
||||
was_selected = gtk_selection_model_is_selected (priv->old_selection, pos);
|
||||
selected = selected ^ was_selected;
|
||||
}
|
||||
|
||||
if (selected)
|
||||
gtk_selection_model_select_item (model, pos, FALSE);
|
||||
else if (!priv->extend)
|
||||
gtk_selection_model_unselect_item (model, pos);
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_snapshot_rubberband (GtkListBase *self,
|
||||
GtkSnapshot *snapshot)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
GtkStyleContext *context;
|
||||
GdkRectangle rect;
|
||||
double value_x, value_y;
|
||||
|
||||
if (!priv->doing_rubberband)
|
||||
return;
|
||||
|
||||
value_x = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_HORIZONTAL]);
|
||||
value_y = gtk_adjustment_get_value (priv->adjustment[GTK_ORIENTATION_VERTICAL]);
|
||||
|
||||
rect.x = MIN (priv->rb_x1, priv->rb_x2) - value_x;
|
||||
rect.y = MIN (priv->rb_y1, priv->rb_y2) - value_y;
|
||||
rect.width = ABS (priv->rb_x1 - priv->rb_x2) + 1;
|
||||
rect.height = ABS (priv->rb_y1 - priv->rb_y2) + 1;
|
||||
|
||||
context = gtk_widget_get_style_context (GTK_WIDGET (self));
|
||||
|
||||
gtk_style_context_save_to_node (context, priv->rubberband_node);
|
||||
|
||||
gtk_snapshot_render_background (snapshot, context, rect.x, rect.y, rect.width, rect.height);
|
||||
gtk_snapshot_render_frame (snapshot, context, rect.x, rect.y, rect.width, rect.height);
|
||||
|
||||
gtk_style_context_restore (context);
|
||||
|
||||
}
|
||||
|
||||
static void
|
||||
get_selection_modifiers (GtkGesture *gesture,
|
||||
gboolean *modify,
|
||||
gboolean *extend)
|
||||
{
|
||||
GdkEventSequence *sequence;
|
||||
GdkEvent *event;
|
||||
GdkModifierType state;
|
||||
|
||||
*modify = FALSE;
|
||||
*extend = FALSE;
|
||||
|
||||
sequence = gtk_gesture_get_last_updated_sequence (gesture);
|
||||
event = gtk_gesture_get_last_event (gesture, sequence);
|
||||
state = gdk_event_get_modifier_state (event);
|
||||
if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
|
||||
*modify = TRUE;
|
||||
if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
|
||||
*extend = TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_drag_begin (GtkGestureDrag *gesture,
|
||||
double start_x,
|
||||
double start_y,
|
||||
GtkListBase *self)
|
||||
{
|
||||
gboolean modify;
|
||||
gboolean extend;
|
||||
|
||||
get_selection_modifiers (GTK_GESTURE (gesture), &modify, &extend);
|
||||
gtk_list_base_start_rubberband (self, start_x, start_y, modify, extend);
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_drag_update (GtkGestureDrag *gesture,
|
||||
double offset_x,
|
||||
double offset_y,
|
||||
GtkListBase *self)
|
||||
{
|
||||
double start_x, start_y;
|
||||
gtk_gesture_drag_get_start_point (gesture, &start_x, &start_y);
|
||||
gtk_list_base_update_rubberband (self, start_x + offset_x, start_y + offset_y);
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_drag_end (GtkGestureDrag *gesture,
|
||||
double offset_x,
|
||||
double offset_y,
|
||||
GtkListBase *self)
|
||||
{
|
||||
gtk_list_base_drag_update (gesture, offset_x, offset_y, self);
|
||||
gtk_list_base_stop_rubberband (self);
|
||||
}
|
||||
|
||||
void
|
||||
gtk_list_base_set_enable_rubberband (GtkListBase *self,
|
||||
gboolean enable)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
|
||||
if (priv->enable_rubberband == enable)
|
||||
return;
|
||||
|
||||
priv->enable_rubberband = enable;
|
||||
|
||||
if (enable)
|
||||
{
|
||||
priv->drag_gesture = gtk_gesture_drag_new ();
|
||||
g_signal_connect (priv->drag_gesture, "drag-begin", G_CALLBACK (gtk_list_base_drag_begin), self);
|
||||
g_signal_connect (priv->drag_gesture, "drag-update", G_CALLBACK (gtk_list_base_drag_update), self);
|
||||
g_signal_connect (priv->drag_gesture, "drag-end", G_CALLBACK (gtk_list_base_drag_end), self);
|
||||
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (priv->drag_gesture));
|
||||
}
|
||||
else
|
||||
{
|
||||
gtk_widget_remove_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (priv->drag_gesture));
|
||||
priv->drag_gesture = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
gboolean
|
||||
gtk_list_base_get_enable_rubberband (GtkListBase *self)
|
||||
{
|
||||
GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self);
|
||||
|
||||
return priv->enable_rubberband;
|
||||
}
|
||||
|
||||
static void
|
||||
gtk_list_base_init_real (GtkListBase *self,
|
||||
GtkListBaseClass *g_class)
|
||||
@ -1537,4 +1822,3 @@ gtk_list_base_set_model (GtkListBase *self,
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
@ -99,5 +99,8 @@ gboolean gtk_list_base_grab_focus_on_item (GtkListBase
|
||||
gboolean select,
|
||||
gboolean modify,
|
||||
gboolean extend);
|
||||
void gtk_list_base_set_enable_rubberband (GtkListBase *self,
|
||||
gboolean enable);
|
||||
gboolean gtk_list_base_get_enable_rubberband (GtkListBase *self);
|
||||
|
||||
#endif /* __GTK_LIST_BASE_PRIVATE_H__ */
|
||||
|
@ -29,6 +29,7 @@
|
||||
#include "gtkintl.h"
|
||||
#include "gtklistitemfactoryprivate.h"
|
||||
#include "gtklistitemprivate.h"
|
||||
#include "gtklistbaseprivate.h"
|
||||
#include "gtkmain.h"
|
||||
#include "gtkselectionmodel.h"
|
||||
#include "gtkwidget.h"
|
||||
@ -309,6 +310,8 @@ gtk_list_item_widget_click_gesture_pressed (GtkGestureClick *gesture,
|
||||
{
|
||||
GtkListItemWidgetPrivate *priv = gtk_list_item_widget_get_instance_private (self);
|
||||
GtkWidget *widget = GTK_WIDGET (self);
|
||||
GtkWidget * parent = gtk_widget_get_parent (widget);
|
||||
gboolean rubberband;
|
||||
|
||||
if (priv->list_item && !priv->list_item->selectable && !priv->list_item->activatable)
|
||||
{
|
||||
@ -316,7 +319,12 @@ gtk_list_item_widget_click_gesture_pressed (GtkGestureClick *gesture,
|
||||
return;
|
||||
}
|
||||
|
||||
if (!priv->list_item || priv->list_item->selectable)
|
||||
if (GTK_IS_LIST_BASE (parent))
|
||||
rubberband = gtk_list_base_get_enable_rubberband (GTK_LIST_BASE (parent));
|
||||
else
|
||||
rubberband = FALSE;
|
||||
|
||||
if (!rubberband && (!priv->list_item || priv->list_item->selectable))
|
||||
{
|
||||
GdkModifierType state;
|
||||
GdkEvent *event;
|
||||
|
Loading…
Reference in New Issue
Block a user