forked from AuroraMiddleware/gtk
columnview: Interactive column resizing
This copies just enough of the treeview code to get columns moving.
This commit is contained in:
Matthias Clasen
parent
a1eadde25b
commit
f65f9591a1
@ -36,6 +36,8 @@
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#include "gtkwidgetprivate.h"
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#include "gtksizerequest.h"
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#include "gtkadjustment.h"
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#include "gtkgesturedrag.h"
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#include "gtkeventcontrollermotion.h"
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/**
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* SECTION:gtkcolumnview
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@ -67,6 +69,10 @@ struct _GtkColumnView
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GtkSorter *sorter;
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GtkAdjustment *hadjustment;
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gboolean in_column_resize;
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int drag_pos;
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int drag_x;
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};
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struct _GtkColumnViewClass
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@ -551,9 +557,144 @@ gtk_column_view_class_init (GtkColumnViewClass *klass)
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gtk_widget_class_set_css_name (widget_class, I_("treeview"));
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}
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#define DRAG_WIDTH 6
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static gboolean
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gtk_column_view_in_resize_rect (GtkColumnView *self,
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GtkColumnViewColumn *column,
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double x,
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double y)
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{
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GtkWidget *header;
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graphene_rect_t rect;
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header = gtk_column_view_column_get_header (column);
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if (!gtk_widget_compute_bounds (header, self->header, &rect))
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return FALSE;
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rect.origin.x += rect.size.width - DRAG_WIDTH / 2;
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rect.size.width = DRAG_WIDTH;
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return graphene_rect_contains_point (&rect, &(graphene_point_t) { x, y});
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}
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static void
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header_drag_begin (GtkGestureDrag *gesture,
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double start_x,
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double start_y,
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GtkColumnView *self)
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{
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int i, n;
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n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
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for (i = 0; !self->in_column_resize && i < n; i++)
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{
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GtkColumnViewColumn *column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
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if (!gtk_column_view_column_get_visible (column))
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{
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g_object_unref (column);
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continue;
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}
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if (i + 1 < n &&
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gtk_column_view_column_get_resizable (column) &&
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gtk_column_view_in_resize_rect (self, column, start_x, start_y))
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{
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int size;
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gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
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gtk_column_view_column_get_allocation (column, NULL, &size);
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gtk_column_view_column_set_fixed_width (column, size);
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self->drag_pos = i;
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self->drag_x = start_x - size;
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self->in_column_resize = TRUE;
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g_object_unref (column);
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break;
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}
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g_object_unref (column);
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}
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}
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static void
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header_drag_end (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkColumnView *self)
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{
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self->in_column_resize = FALSE;
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}
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static void
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update_column_resize (GtkColumnView *self,
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double x)
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{
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GtkColumnViewColumn *column;
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column = g_list_model_get_item (G_LIST_MODEL (self->columns), self->drag_pos);
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gtk_column_view_column_set_fixed_width (column, MAX (x - self->drag_x, 0));
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g_object_unref (column);
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}
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static void
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header_drag_update (GtkGestureDrag *gesture,
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double offset_x,
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double offset_y,
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GtkColumnView *self)
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{
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double start_x, x;
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gtk_gesture_drag_get_start_point (gesture, &start_x, NULL);
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x = start_x + offset_x;
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if (self->in_column_resize)
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update_column_resize (self, x);
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}
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static void
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header_motion (GtkEventControllerMotion *controller,
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double x,
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double y,
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GtkColumnView *self)
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{
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gboolean cursor_set = FALSE;
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int i, n;
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n = g_list_model_get_n_items (G_LIST_MODEL (self->columns));
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for (i = 0; i < n; i++)
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{
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GtkColumnViewColumn *column = g_list_model_get_item (G_LIST_MODEL (self->columns), i);
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if (!gtk_column_view_column_get_visible (column))
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{
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g_object_unref (column);
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continue;
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}
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if (i + 1 < n &&
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gtk_column_view_column_get_resizable (column) &&
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gtk_column_view_in_resize_rect (self, column, x, y))
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{
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gtk_widget_set_cursor_from_name (self->header, "col-resize");
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cursor_set = TRUE;
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}
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g_object_unref (column);
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}
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if (!cursor_set)
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gtk_widget_set_cursor (self->header, NULL);
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}
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static void
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gtk_column_view_init (GtkColumnView *self)
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{
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GtkEventController *controller;
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self->columns = g_list_store_new (GTK_TYPE_COLUMN_VIEW_COLUMN);
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self->header = gtk_list_item_widget_new (NULL, "header");
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@ -561,6 +702,17 @@ gtk_column_view_init (GtkColumnView *self)
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gtk_widget_set_layout_manager (self->header, gtk_column_view_layout_new (self));
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gtk_widget_set_parent (self->header, GTK_WIDGET (self));
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controller = GTK_EVENT_CONTROLLER (gtk_gesture_drag_new ());
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g_signal_connect (controller, "drag-begin", G_CALLBACK (header_drag_begin), self);
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g_signal_connect (controller, "drag-update", G_CALLBACK (header_drag_update), self);
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g_signal_connect (controller, "drag-end", G_CALLBACK (header_drag_end), self);
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gtk_event_controller_set_propagation_phase (controller, GTK_PHASE_CAPTURE);
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gtk_widget_add_controller (self->header, controller);
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controller = gtk_event_controller_motion_new ();
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g_signal_connect (controller, "motion", G_CALLBACK (header_motion), self);
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gtk_widget_add_controller (self->header, controller);
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self->sorter = gtk_column_view_sorter_new ();
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self->factory = gtk_column_list_item_factory_new (self);
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self->listview = GTK_LIST_VIEW (gtk_list_view_new_with_factory (
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