-/* cellareascaffold.c
- *
- * Copyright (C) 2010 Openismus GmbH
- *
- * Authors:
- * Tristan Van Berkom <tristanvb@openismus.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <string.h>
-#include "cellareascaffold.h"
-
-/* GObjectClass */
-static void cell_area_scaffold_finalize (GObject *object);
-static void cell_area_scaffold_dispose (GObject *object);
-
-/* GtkWidgetClass */
-static void cell_area_scaffold_realize (GtkWidget *widget);
-static void cell_area_scaffold_unrealize (GtkWidget *widget);
-static gboolean cell_area_scaffold_draw (GtkWidget *widget,
- cairo_t *cr);
-static void cell_area_scaffold_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
-static void cell_area_scaffold_get_preferred_width (GtkWidget *widget,
- gint *minimum_size,
- gint *natural_size);
-static void cell_area_scaffold_get_preferred_height_for_width (GtkWidget *widget,
- gint for_size,
- gint *minimum_size,
- gint *natural_size);
-static void cell_area_scaffold_get_preferred_height (GtkWidget *widget,
- gint *minimum_size,
- gint *natural_size);
-static void cell_area_scaffold_get_preferred_width_for_height (GtkWidget *widget,
- gint for_size,
- gint *minimum_size,
- gint *natural_size);
-static void cell_area_scaffold_map (GtkWidget *widget);
-static void cell_area_scaffold_unmap (GtkWidget *widget);
-static gint cell_area_scaffold_focus (GtkWidget *widget,
- GtkDirectionType direction);
-static gboolean cell_area_scaffold_button_press (GtkWidget *widget,
- GdkEventButton *event);
-
-/* GtkContainerClass */
-static void cell_area_scaffold_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data);
-static void cell_area_scaffold_remove (GtkContainer *container,
- GtkWidget *child);
-static void cell_area_scaffold_put_edit_widget (CellAreaScaffold *scaffold,
- GtkWidget *edit_widget,
- gint x,
- gint y,
- gint width,
- gint height);
-
-/* CellAreaScaffoldClass */
-static void cell_area_scaffold_activate (CellAreaScaffold *scaffold);
-
-/* CellArea/GtkTreeModel callbacks */
-static void size_changed_cb (GtkCellAreaContext *context,
- GParamSpec *pspec,
- CellAreaScaffold *scaffold);
-static void focus_changed_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- const gchar *path,
- CellAreaScaffold *scaffold);
-static void add_editable_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- GtkCellEditable *edit_widget,
- GdkRectangle *cell_area,
- const gchar *path,
- CellAreaScaffold *scaffold);
-static void remove_editable_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- GtkCellEditable *edit_widget,
- CellAreaScaffold *scaffold);
-static void row_changed_cb (GtkTreeModel *model,
- GtkTreePath *path,
- GtkTreeIter *iter,
- CellAreaScaffold *scaffold);
-static void row_inserted_cb (GtkTreeModel *model,
- GtkTreePath *path,
- GtkTreeIter *iter,
- CellAreaScaffold *scaffold);
-static void row_deleted_cb (GtkTreeModel *model,
- GtkTreePath *path,
- CellAreaScaffold *scaffold);
-static void rows_reordered_cb (GtkTreeModel *model,
- GtkTreePath *parent,
- GtkTreeIter *iter,
- gint *new_order,
- CellAreaScaffold *scaffold);
-
-typedef struct {
- gint size; /* The height of rows in the scaffold's */
-} RowData;
-
-struct _CellAreaScaffoldPrivate {
-
- /* Window for catching events and dispatching them to the cell area */
- GdkWindow *event_window;
-
- /* The model we're showing data for */
- GtkTreeModel *model;
- gulong row_changed_id;
- gulong row_inserted_id;
- gulong row_deleted_id;
- gulong rows_reordered_id;
-
- /* The area rendering the data and a global context */
- GtkCellArea *area;
- GtkCellAreaContext *context;
-
- /* Cache some info about rows (hieghts etc) */
- GArray *row_data;
-
- /* Focus handling */
- gint focus_row;
- gulong focus_changed_id;
-
- /* Check when the underlying area changes the size and
- * we need to queue a redraw */
- gulong size_changed_id;
-
- /* Currently edited widget */
- GtkWidget *edit_widget;
- GdkRectangle edit_rect;
- gulong add_editable_id;
- gulong remove_editable_id;
-
-
- gint row_spacing;
- gint indent;
-};
-
-enum {
- ACTIVATE,
- N_SIGNALS
-};
-
-static guint scaffold_signals[N_SIGNALS] = { 0 };
-
-#define DIRECTION_STR(dir) \
- ((dir) == GTK_DIR_TAB_FORWARD ? "tab forward" : \
- (dir) == GTK_DIR_TAB_BACKWARD ? "tab backward" : \
- (dir) == GTK_DIR_UP ? "up" : \
- (dir) == GTK_DIR_DOWN ? "down" : \
- (dir) == GTK_DIR_LEFT ? "left" : \
- (dir) == GTK_DIR_RIGHT ? "right" : "invalid")
-
-G_DEFINE_TYPE_WITH_CODE (CellAreaScaffold, cell_area_scaffold, GTK_TYPE_CONTAINER,
- G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL));
-
-
-static void
-cell_area_scaffold_init (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv;
-
- scaffold->priv = G_TYPE_INSTANCE_GET_PRIVATE (scaffold,
- TYPE_CELL_AREA_SCAFFOLD,
- CellAreaScaffoldPrivate);
- priv = scaffold->priv;
-
- priv->area = gtk_cell_area_box_new ();
- priv->context = gtk_cell_area_create_context (priv->area);
-
- priv->row_data = g_array_new (FALSE, FALSE, sizeof (RowData));
-
- gtk_widget_set_has_window (GTK_WIDGET (scaffold), FALSE);
- gtk_widget_set_can_focus (GTK_WIDGET (scaffold), TRUE);
-
- priv->size_changed_id =
- g_signal_connect (priv->context, "notify",
- G_CALLBACK (size_changed_cb), scaffold);
-
- priv->focus_changed_id =
- g_signal_connect (priv->area, "focus-changed",
- G_CALLBACK (focus_changed_cb), scaffold);
-
- priv->add_editable_id =
- g_signal_connect (priv->area, "add-editable",
- G_CALLBACK (add_editable_cb), scaffold);
-
- priv->remove_editable_id =
- g_signal_connect (priv->area, "remove-editable",
- G_CALLBACK (remove_editable_cb), scaffold);
-}
-
-static void
-cell_area_scaffold_class_init (CellAreaScaffoldClass *class)
-{
- GObjectClass *gobject_class;
- GtkWidgetClass *widget_class;
- GtkContainerClass *container_class;
-
- gobject_class = G_OBJECT_CLASS (class);
- gobject_class->dispose = cell_area_scaffold_dispose;
- gobject_class->finalize = cell_area_scaffold_finalize;
-
- widget_class = GTK_WIDGET_CLASS (class);
- widget_class->realize = cell_area_scaffold_realize;
- widget_class->unrealize = cell_area_scaffold_unrealize;
- widget_class->draw = cell_area_scaffold_draw;
- widget_class->size_allocate = cell_area_scaffold_size_allocate;
- widget_class->get_preferred_width = cell_area_scaffold_get_preferred_width;
- widget_class->get_preferred_height_for_width = cell_area_scaffold_get_preferred_height_for_width;
- widget_class->get_preferred_height = cell_area_scaffold_get_preferred_height;
- widget_class->get_preferred_width_for_height = cell_area_scaffold_get_preferred_width_for_height;
- widget_class->map = cell_area_scaffold_map;
- widget_class->unmap = cell_area_scaffold_unmap;
- widget_class->focus = cell_area_scaffold_focus;
- widget_class->button_press_event = cell_area_scaffold_button_press;
-
- container_class = GTK_CONTAINER_CLASS (class);
- container_class->forall = cell_area_scaffold_forall;
- container_class->remove = cell_area_scaffold_remove;
-
- class->activate = cell_area_scaffold_activate;
-
- scaffold_signals[ACTIVATE] =
- g_signal_new ("activate",
- G_OBJECT_CLASS_TYPE (gobject_class),
- G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
- G_STRUCT_OFFSET (CellAreaScaffoldClass, activate),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
- widget_class->activate_signal = scaffold_signals[ACTIVATE];
-
-
- g_type_class_add_private (gobject_class, sizeof (CellAreaScaffoldPrivate));
-}
-
-/*********************************************************
- * GObjectClass *
- *********************************************************/
-static void
-cell_area_scaffold_finalize (GObject *object)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (object);
- CellAreaScaffoldPrivate *priv;
-
- priv = scaffold->priv;
-
- g_array_free (priv->row_data, TRUE);
-
- G_OBJECT_CLASS (cell_area_scaffold_parent_class)->finalize (object);
-}
-
-static void
-cell_area_scaffold_dispose (GObject *object)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (object);
- CellAreaScaffoldPrivate *priv;
-
- priv = scaffold->priv;
-
- cell_area_scaffold_set_model (scaffold, NULL);
-
- if (priv->context)
- {
- /* Disconnect signals */
- g_signal_handler_disconnect (priv->context, priv->size_changed_id);
-
- g_object_unref (priv->context);
- priv->context = NULL;
- priv->size_changed_id = 0;
- }
-
- if (priv->area)
- {
- /* Disconnect signals */
- g_signal_handler_disconnect (priv->area, priv->focus_changed_id);
- g_signal_handler_disconnect (priv->area, priv->add_editable_id);
- g_signal_handler_disconnect (priv->area, priv->remove_editable_id);
-
- g_object_unref (priv->area);
- priv->area = NULL;
- priv->focus_changed_id = 0;
- }
-
- G_OBJECT_CLASS (cell_area_scaffold_parent_class)->dispose (object);
-}
-
-/*********************************************************
- * GtkWidgetClass *
- *********************************************************/
-static void
-cell_area_scaffold_realize (GtkWidget *widget)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkAllocation allocation;
- GdkWindow *window;
- GdkWindowAttr attributes;
- gint attributes_mask;
-
- gtk_widget_get_allocation (widget, &allocation);
-
- gtk_widget_set_realized (widget, TRUE);
-
- attributes.window_type = GDK_WINDOW_CHILD;
- attributes.x = allocation.x;
- attributes.y = allocation.y;
- attributes.width = allocation.width;
- attributes.height = allocation.height;
- attributes.wclass = GDK_INPUT_ONLY;
- attributes.event_mask = gtk_widget_get_events (widget);
- attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
- GDK_BUTTON_RELEASE_MASK |
- GDK_KEY_PRESS_MASK |
- GDK_KEY_RELEASE_MASK);
-
- attributes_mask = GDK_WA_X | GDK_WA_Y;
-
- window = gtk_widget_get_parent_window (widget);
- gtk_widget_set_window (widget, window);
- g_object_ref (window);
-
- priv->event_window = gdk_window_new (window, &attributes, attributes_mask);
- gdk_window_set_user_data (priv->event_window, widget);
-}
-
-static void
-cell_area_scaffold_unrealize (GtkWidget *widget)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- if (priv->event_window)
- {
- gdk_window_set_user_data (priv->event_window, NULL);
- gdk_window_destroy (priv->event_window);
- priv->event_window = NULL;
- }
-
- GTK_WIDGET_CLASS (cell_area_scaffold_parent_class)->unrealize (widget);
-}
-
-static gboolean
-cell_area_scaffold_draw (GtkWidget *widget,
- cairo_t *cr)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkTreeIter iter;
- gboolean valid;
- GdkRectangle background_area;
- GdkRectangle render_area;
- GtkAllocation allocation;
- gint i = 0;
- gboolean have_focus;
- GtkCellRendererState flags;
-
- if (!priv->model)
- return FALSE;
-
- have_focus = gtk_widget_has_focus (widget);
-
- gtk_widget_get_allocation (widget, &allocation);
-
- render_area.x = 0;
- render_area.y = 0;
- render_area.width = allocation.width;
- render_area.height = allocation.height;
-
- background_area = render_area;
-
- render_area.x = priv->indent;
- render_area.width -= priv->indent;
-
- valid = gtk_tree_model_get_iter_first (priv->model, &iter);
- while (valid)
- {
- RowData *data = &g_array_index (priv->row_data, RowData, i);
-
- if (have_focus && i == priv->focus_row)
- flags = GTK_CELL_RENDERER_FOCUSED;
- else
- flags = 0;
-
- render_area.height = data->size;
-
- background_area.height = render_area.height;
- background_area.y = render_area.y;
-
- if (i == 0)
- {
- background_area.height += priv->row_spacing / 2;
- background_area.height += priv->row_spacing % 2;
- }
- else if (i == priv->row_data->len - 1)
- {
- background_area.y -= priv->row_spacing / 2;
- background_area.height += priv->row_spacing / 2;
- }
- else
- {
- background_area.y -= priv->row_spacing / 2;
- background_area.height += priv->row_spacing;
- }
-
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_render (priv->area, priv->context, widget, cr,
- &background_area, &render_area, flags,
- (have_focus && i == priv->focus_row));
-
- render_area.y += data->size;
- render_area.y += priv->row_spacing;
-
- i++;
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
-
- /* Draw the edit widget after drawing everything else */
- GTK_WIDGET_CLASS (cell_area_scaffold_parent_class)->draw (widget, cr);
-
- return FALSE;
-}
-
-static void
-request_all_base (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkWidget *widget = GTK_WIDGET (scaffold);
- GtkTreeIter iter;
- gboolean valid;
-
- if (!priv->model)
- return;
-
- g_signal_handler_block (priv->context, priv->size_changed_id);
-
- valid = gtk_tree_model_get_iter_first (priv->model, &iter);
- while (valid)
- {
- gint min, nat;
-
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_get_preferred_width (priv->area, priv->context, widget, &min, &nat);
-
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
-
- g_signal_handler_unblock (priv->context, priv->size_changed_id);
-}
-
-static void
-get_row_sizes (CellAreaScaffold *scaffold,
- GArray *array,
- gint for_size)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkWidget *widget = GTK_WIDGET (scaffold);
- GtkTreeIter iter;
- gboolean valid;
- gint i = 0;
-
- if (!priv->model)
- return;
-
- valid = gtk_tree_model_get_iter_first (priv->model, &iter);
- while (valid)
- {
- RowData *data = &g_array_index (array, RowData, i);
-
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_get_preferred_height_for_width (priv->area, priv->context, widget,
- for_size, &data->size, NULL);
-
- i++;
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
-}
-
-static void
-cell_area_scaffold_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- gtk_widget_set_allocation (widget, allocation);
-
- if (gtk_widget_get_realized (widget))
- gdk_window_move_resize (priv->event_window,
- allocation->x,
- allocation->y,
- allocation->width,
- allocation->height);
-
- /* Allocate the child GtkCellEditable widget if one is currently editing a row */
- if (priv->edit_widget)
- gtk_widget_size_allocate (priv->edit_widget, &priv->edit_rect);
-
- if (!priv->model)
- return;
-
- /* Cache the per-row sizes and allocate the context */
- gtk_cell_area_context_allocate (priv->context, allocation->width - priv->indent, -1);
- get_row_sizes (scaffold, priv->row_data, allocation->width - priv->indent);
-}
-
-
-static void
-cell_area_scaffold_get_preferred_width (GtkWidget *widget,
- gint *minimum_size,
- gint *natural_size)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- if (!priv->model)
- return;
-
- request_all_base (scaffold);
- gtk_cell_area_context_get_preferred_width (priv->context, minimum_size, natural_size);
-
- *minimum_size += priv->indent;
- *natural_size += priv->indent;
-}
-
-static void
-cell_area_scaffold_get_preferred_height_for_width (GtkWidget *widget,
- gint for_size,
- gint *minimum_size,
- gint *natural_size)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GArray *request_array;
- gint n_rows, i, full_size = 0;
-
- if (!priv->model)
- return;
-
- n_rows = gtk_tree_model_iter_n_children (priv->model, NULL);
-
- /* Get an array for the contextual request */
- request_array = g_array_new (FALSE, FALSE, sizeof (RowData));
- g_array_set_size (request_array, n_rows);
- memset (request_array->data, 0x0, n_rows * sizeof (RowData));
-
- /* Gather each contextual size into the request array */
- get_row_sizes (scaffold, request_array, for_size - priv->indent);
-
- /* Sum up the size and add some row spacing */
- for (i = 0; i < n_rows; i++)
- {
- RowData *data = &g_array_index (request_array, RowData, i);
-
- full_size += data->size;
- }
-
- full_size += MAX (0, n_rows -1) * priv->row_spacing;
-
- g_array_free (request_array, TRUE);
-
- *minimum_size = full_size;
- *natural_size = full_size;
-}
-
-static void
-cell_area_scaffold_get_preferred_height (GtkWidget *widget,
- gint *minimum_size,
- gint *natural_size)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- gint min_size, nat_size;
-
- if (!priv->model)
- return;
-
- GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_size, &nat_size);
- GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_size,
- minimum_size, natural_size);
-}
-
-static void
-cell_area_scaffold_get_preferred_width_for_height (GtkWidget *widget,
- gint for_size,
- gint *minimum_size,
- gint *natural_size)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- if (!priv->model)
- return;
-
- GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_size, natural_size);
-}
-
-static void
-cell_area_scaffold_map (GtkWidget *widget)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- GTK_WIDGET_CLASS (cell_area_scaffold_parent_class)->map (widget);
-
- if (priv->event_window)
- gdk_window_show (priv->event_window);
-}
-
-static void
-cell_area_scaffold_unmap (GtkWidget *widget)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- GTK_WIDGET_CLASS (cell_area_scaffold_parent_class)->unmap (widget);
-
- if (priv->event_window)
- gdk_window_hide (priv->event_window);
-}
-
-
-static gint
-cell_area_scaffold_focus (GtkWidget *widget,
- GtkDirectionType direction)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkTreeIter iter;
- gboolean valid;
- gint focus_row;
- gboolean changed = FALSE;
-
- /* Grab focus on ourself if we dont already have focus */
- if (!gtk_widget_has_focus (widget))
- gtk_widget_grab_focus (widget);
-
- /* Move focus from cell to cell and row to row */
- focus_row = priv->focus_row;
-
- g_signal_handler_block (priv->area, priv->focus_changed_id);
-
- valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, priv->focus_row);
- while (valid)
- {
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
-
- /* If focus stays in the area we dont need to do any more */
- if (gtk_cell_area_focus (priv->area, direction))
- {
- priv->focus_row = focus_row;
-
- /* XXX A smarter implementation would only invalidate the rectangles where
- * focus was removed from and new focus was placed */
- gtk_widget_queue_draw (widget);
- changed = TRUE;
- break;
- }
- else
- {
- if (direction == GTK_DIR_RIGHT ||
- direction == GTK_DIR_LEFT)
- break;
- else if (direction == GTK_DIR_UP ||
- direction == GTK_DIR_TAB_BACKWARD)
- {
- if (focus_row == 0)
- break;
- else
- {
- /* XXX A real implementation should check if the
- * previous row can focus with its attributes setup */
- focus_row--;
- valid = gtk_tree_model_iter_nth_child (priv->model, &iter, NULL, focus_row);
- }
- }
- else /* direction == GTK_DIR_DOWN || GTK_DIR_TAB_FORWARD */
- {
- if (focus_row == priv->row_data->len - 1)
- break;
- else
- {
- /* XXX A real implementation should check if the
- * previous row can focus with its attributes setup */
- focus_row++;
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
- }
- }
- }
-
- g_signal_handler_unblock (priv->area, priv->focus_changed_id);
-
- /* XXX A smarter implementation would only invalidate the rectangles where
- * focus was removed from and new focus was placed */
- gtk_widget_queue_draw (widget);
-
- return changed;
-}
-
-static gboolean
-cell_area_scaffold_button_press (GtkWidget *widget,
- GdkEventButton *event)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (widget);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkTreeIter iter;
- gboolean valid;
- gint i = 0;
- GdkRectangle event_area;
- GtkAllocation allocation;
- gboolean handled = FALSE;
-
- gtk_widget_get_allocation (widget, &allocation);
-
- event_area.x = 0;
- event_area.y = 0;
- event_area.width = allocation.width;
- event_area.height = allocation.height;
-
- event_area.x = priv->indent;
- event_area.width -= priv->indent;
-
- valid = gtk_tree_model_get_iter_first (priv->model, &iter);
- while (valid)
- {
- RowData *data = &g_array_index (priv->row_data, RowData, i);
-
- event_area.height = data->size;
-
- if (event->y >= event_area.y &&
- event->y <= event_area.y + event_area.height)
- {
- /* XXX A real implementation would assemble GtkCellRendererState flags here */
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- handled = gtk_cell_area_event (priv->area, priv->context, GTK_WIDGET (scaffold),
- (GdkEvent *)event, &event_area, 0);
- break;
- }
-
- event_area.y += data->size;
- event_area.y += priv->row_spacing;
-
- i++;
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
-
- return handled;
-}
-
-
-/*********************************************************
- * GtkContainerClass *
- *********************************************************/
-static void
-cell_area_scaffold_put_edit_widget (CellAreaScaffold *scaffold,
- GtkWidget *edit_widget,
- gint x,
- gint y,
- gint width,
- gint height)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- priv->edit_rect.x = x;
- priv->edit_rect.y = y;
- priv->edit_rect.width = width;
- priv->edit_rect.height = height;
- priv->edit_widget = edit_widget;
-
- gtk_widget_set_parent (edit_widget, GTK_WIDGET (scaffold));
-}
-
-static void
-cell_area_scaffold_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (container);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- if (priv->edit_widget)
- (* callback) (priv->edit_widget, callback_data);
-}
-
-static void
-cell_area_scaffold_remove (GtkContainer *container,
- GtkWidget *child)
-{
- CellAreaScaffold *scaffold = CELL_AREA_SCAFFOLD (container);
- CellAreaScaffoldPrivate *priv = scaffold->priv;
-
- g_return_if_fail (child == priv->edit_widget);
-
- gtk_widget_unparent (priv->edit_widget);
- priv->edit_widget = NULL;
-}
-
-/*********************************************************
- * CellAreaScaffoldClass *
- *********************************************************/
-static void
-cell_area_scaffold_activate (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkWidget *widget = GTK_WIDGET (scaffold);
- GtkAllocation allocation;
- GdkRectangle cell_area;
- GtkTreeIter iter;
- gboolean valid;
- gint i = 0;
-
- gtk_widget_get_allocation (widget, &allocation);
-
- cell_area.x = 0;
- cell_area.y = 0;
- cell_area.width = allocation.width;
- cell_area.height = allocation.height;
-
- cell_area.x = priv->indent;
- cell_area.width -= priv->indent;
-
- valid = gtk_tree_model_get_iter_first (priv->model, &iter);
- while (valid)
- {
- RowData *data = &g_array_index (priv->row_data, RowData, i);
-
- if (i == priv->focus_row)
- {
- cell_area.height = data->size;
-
- gtk_cell_area_apply_attributes (priv->area, priv->model, &iter, FALSE, FALSE);
- gtk_cell_area_activate (priv->area, priv->context, widget, &cell_area,
- GTK_CELL_RENDERER_FOCUSED, FALSE);
-
- break;
- }
-
- cell_area.y += data->size + priv->row_spacing;
-
- i++;
- valid = gtk_tree_model_iter_next (priv->model, &iter);
- }
-}
-
-/*********************************************************
- * CellArea/GtkTreeModel callbacks *
- *********************************************************/
-static void
-size_changed_cb (GtkCellAreaContext *context,
- GParamSpec *pspec,
- CellAreaScaffold *scaffold)
-{
- if (!strcmp (pspec->name, "minimum-width") ||
- !strcmp (pspec->name, "natural-width") ||
- !strcmp (pspec->name, "minimum-height") ||
- !strcmp (pspec->name, "natural-height"))
- gtk_widget_queue_resize (GTK_WIDGET (scaffold));
-}
-
-static void
-focus_changed_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- const gchar *path,
- CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- GtkWidget *widget = GTK_WIDGET (scaffold);
- GtkTreePath *treepath;
- gint *indices;
-
- if (!priv->model)
- return;
-
- /* We can be signaled that a renderer lost focus, here
- * we dont care */
- if (!renderer)
- return;
-
- treepath = gtk_tree_path_new_from_string (path);
- indices = gtk_tree_path_get_indices (treepath);
-
- priv->focus_row = indices[0];
-
- gtk_tree_path_free (treepath);
-
- /* Make sure we have focus now */
- if (!gtk_widget_has_focus (widget))
- gtk_widget_grab_focus (widget);
-
- gtk_widget_queue_draw (widget);
-}
-
-static void
-add_editable_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- GtkCellEditable *edit_widget,
- GdkRectangle *cell_area,
- const gchar *path,
- CellAreaScaffold *scaffold)
-{
- GtkAllocation allocation;
-
- gtk_widget_get_allocation (GTK_WIDGET (scaffold), &allocation);
-
- cell_area_scaffold_put_edit_widget (scaffold, GTK_WIDGET (edit_widget),
- allocation.x + cell_area->x,
- allocation.y + cell_area->y,
- cell_area->width, cell_area->height);
-}
-
-static void
-remove_editable_cb (GtkCellArea *area,
- GtkCellRenderer *renderer,
- GtkCellEditable *edit_widget,
- CellAreaScaffold *scaffold)
-{
- gtk_container_remove (GTK_CONTAINER (scaffold), GTK_WIDGET (edit_widget));
-
- gtk_widget_grab_focus (GTK_WIDGET (scaffold));
-}
-
-static void
-rebuild_and_reset_internals (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv = scaffold->priv;
- gint n_rows;
-
- if (priv->model)
- {
- n_rows = gtk_tree_model_iter_n_children (priv->model, NULL);
-
- /* Clear/reset the array */
- g_array_set_size (priv->row_data, n_rows);
- memset (priv->row_data->data, 0x0, n_rows * sizeof (RowData));
- }
- else
- g_array_set_size (priv->row_data, 0);
-
- /* Data changed, lets reset the context and consequently queue resize and
- * start everything over again (note this is definitly far from optimized) */
- gtk_cell_area_context_reset (priv->context);
-}
-
-static void
-row_changed_cb (GtkTreeModel *model,
- GtkTreePath *path,
- GtkTreeIter *iter,
- CellAreaScaffold *scaffold)
-{
- rebuild_and_reset_internals (scaffold);
-}
-
-static void
-row_inserted_cb (GtkTreeModel *model,
- GtkTreePath *path,
- GtkTreeIter *iter,
- CellAreaScaffold *scaffold)
-{
- rebuild_and_reset_internals (scaffold);
-}
-
-static void
-row_deleted_cb (GtkTreeModel *model,
- GtkTreePath *path,
- CellAreaScaffold *scaffold)
-{
- rebuild_and_reset_internals (scaffold);
-}
-
-static void
-rows_reordered_cb (GtkTreeModel *model,
- GtkTreePath *parent,
- GtkTreeIter *iter,
- gint *new_order,
- CellAreaScaffold *scaffold)
-{
- rebuild_and_reset_internals (scaffold);
-}
-
-/*********************************************************
- * API *
- *********************************************************/
-GtkWidget *
-cell_area_scaffold_new (void)
-{
- return (GtkWidget *)g_object_new (TYPE_CELL_AREA_SCAFFOLD, NULL);
-}
-
-GtkCellArea *
-cell_area_scaffold_get_area (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_val_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold), NULL);
-
- priv = scaffold->priv;
-
- return priv->area;
-}
-
-void
-cell_area_scaffold_set_model (CellAreaScaffold *scaffold,
- GtkTreeModel *model)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold));
-
- priv = scaffold->priv;
-
- if (priv->model != model)
- {
- if (priv->model)
- {
- g_signal_handler_disconnect (priv->model, priv->row_changed_id);
- g_signal_handler_disconnect (priv->model, priv->row_inserted_id);
- g_signal_handler_disconnect (priv->model, priv->row_deleted_id);
- g_signal_handler_disconnect (priv->model, priv->rows_reordered_id);
-
- g_object_unref (priv->model);
- }
-
- priv->model = model;
-
- if (priv->model)
- {
- g_object_ref (priv->model);
-
- priv->row_changed_id =
- g_signal_connect (priv->model, "row-changed",
- G_CALLBACK (row_changed_cb), scaffold);
-
- priv->row_inserted_id =
- g_signal_connect (priv->model, "row-inserted",
- G_CALLBACK (row_inserted_cb), scaffold);
-
- priv->row_deleted_id =
- g_signal_connect (priv->model, "row-deleted",
- G_CALLBACK (row_deleted_cb), scaffold);
-
- priv->rows_reordered_id =
- g_signal_connect (priv->model, "rows-reordered",
- G_CALLBACK (rows_reordered_cb), scaffold);
- }
-
- rebuild_and_reset_internals (scaffold);
- }
-}
-
-GtkTreeModel *
-cell_area_scaffold_get_model (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_val_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold), NULL);
-
- priv = scaffold->priv;
-
- return priv->model;
-}
-
-
-void
-cell_area_scaffold_set_row_spacing (CellAreaScaffold *scaffold,
- gint spacing)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold));
-
- priv = scaffold->priv;
-
- if (priv->row_spacing != spacing)
- {
- priv->row_spacing = spacing;
- gtk_widget_queue_resize (GTK_WIDGET (scaffold));
- }
-}
-
-gint
-cell_area_scaffold_get_row_spacing (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_val_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold), 0);
-
- priv = scaffold->priv;
-
- return priv->row_spacing;
-}
-
-void
-cell_area_scaffold_set_indentation (CellAreaScaffold *scaffold,
- gint indent)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold));
-
- priv = scaffold->priv;
-
- if (priv->indent != indent)
- {
- priv->indent = indent;
- gtk_widget_queue_resize (GTK_WIDGET (scaffold));
- }
-}
-
-gint
-cell_area_scaffold_get_indentation (CellAreaScaffold *scaffold)
-{
- CellAreaScaffoldPrivate *priv;
-
- g_return_val_if_fail (IS_CELL_AREA_SCAFFOLD (scaffold), 0);
-
- priv = scaffold->priv;
-
- return priv->indent;
-}
-
-