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medit/moo/mooutils/moofileview/mooiconview.c

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; coding: utf-8 -*-
* mooiconview.c
*
* Copyright (C) 2004-2005 by Yevgen Muntyan <muntyan@math.tamu.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* See COPYING file that comes with this distribution.
*/
#include "mooiconview.h"
#include MOO_MARSHALS_H
#include "mooutils/mooutils-gobject.h"
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <string.h>
#include <math.h>
typedef struct _Column Column;
typedef struct _Layout Layout;
typedef struct _CellInfo CellInfo;
typedef struct _Selection Selection;
typedef struct _DndInfo DndInfo;
struct _Column {
GtkTreePath *first;
int index;
int width;
int offset;
GPtrArray *entries;
};
struct _Layout {
int num_rows;
int width;
int height;
int row_height;
int pixbuf_width;
int pixbuf_height;
int text_height;
GSList *columns;
};
struct _CellInfo {
GtkCellRenderer *cell;
GSList *attributes;
MooIconCellDataFunc func;
gpointer func_data;
GDestroyNotify destroy;
gboolean show;
};
struct _DndInfo {
GtkTargetList *dest_targets;
GdkDragAction dest_actions;
GdkModifierType start_button_mask;
GtkTargetList *source_targets;
GdkDragAction source_actions;
guint scroll_timeout;
GdkDragContext *drag_motion_context;
guint drag_dest_inside : 1;
guint source_enabled : 1;
guint dest_enabled : 1;
};
struct _MooIconViewPrivate {
GtkTreeModel *model;
CellInfo pixbuf;
CellInfo text;
int pixel_icon_size;
int icon_size; /* GtkIconSize */
int xoffset;
GtkAdjustment *adjustment;
GtkTreeRowReference *scroll_to;
guint update_idle;
Layout *layout;
Selection *selection;
GtkTreeRowReference *cursor;
GtkTreeRowReference *drop_dest;
gboolean mapped;
DndInfo *dnd_info;
int button_pressed;
int button_press_x;
int button_press_y;
};
static void moo_icon_view_finalize (GObject *object);
static void moo_icon_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void moo_icon_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void moo_icon_view_map (GtkWidget *widget);
static void moo_icon_view_realize (GtkWidget *widget);
static void moo_icon_view_unrealize (GtkWidget *widget);
static void moo_icon_view_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void moo_icon_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean moo_icon_view_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean moo_icon_view_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean moo_icon_view_button_release(GtkWidget *widget,
GdkEventButton *event);
static gboolean moo_icon_view_motion_notify (GtkWidget *widget,
GdkEventMotion *event);
static gboolean moo_icon_view_scroll_event (GtkWidget *widget,
GdkEventScroll *event);
static gboolean moo_icon_view_maybe_drag (MooIconView *view,
GdkEventMotion *event);
static void moo_icon_view_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void moo_icon_view_drag_end (GtkWidget *widget,
GdkDragContext *context);
static void moo_icon_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean moo_icon_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
int x,
int y,
guint time);
static void drag_scroll_stop (MooIconView *view);
static void row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
MooIconView *view);
static void row_deleted (GtkTreeModel *model,
GtkTreePath *path,
MooIconView *view);
static void row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
MooIconView *view);
static void rows_reordered (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer whatsthis,
MooIconView *view);
static void cell_data_func (MooIconView *view,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer cell_info);
static void moo_icon_view_set_scroll_adjustments
(GtkWidget *widget,
GtkAdjustment *hadj,
GtkAdjustment *vadj);
static void moo_icon_view_update_adjustment (MooIconView *view);
static void moo_icon_view_scroll_to (MooIconView *view,
int offset);
static int clamp_offset (MooIconView *view,
int offset);
static void moo_icon_view_invalidate_layout (MooIconView *view);
static gboolean moo_icon_view_update_layout (MooIconView *view);
static void init_selection (MooIconView *view);
static void free_selection (MooIconView *view);
static void selection_clear (MooIconView *view);
static void selection_row_deleted (MooIconView *view);
static void cursor_row_deleted (MooIconView *view);
static void free_attributes (CellInfo *info);
static gboolean check_empty (MooIconView *view);
static void init_layout (MooIconView *view);
static void destroy_layout (MooIconView *view);
static void activate_item_at_cursor (MooIconView *view);
static void add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count);
static gboolean move_cursor (MooIconView *view,
GtkMovementStep step,
gint count,
gboolean extend_selection);
static GtkTreePath *ensure_cursor (MooIconView *view);
/* MOO_TYPE_ICON_VIEW */
G_DEFINE_TYPE (MooIconView, moo_icon_view, GTK_TYPE_WIDGET)
enum {
PROP_0,
PROP_PIXBUF_CELL,
PROP_TEXT_CELL,
PROP_MODEL
};
enum {
ROW_ACTIVATED,
SET_SCROLL_ADJUSTMENTS,
SELECTION_CHANGED,
CURSOR_MOVED,
ACTIVATE_ITEM_AT_CURSOR,
MOVE_CURSOR,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
static void moo_icon_view_class_init (MooIconViewClass *klass)
{
GtkBindingSet *binding_set;
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
gobject_class->finalize = moo_icon_view_finalize;
gobject_class->set_property = moo_icon_view_set_property;
gobject_class->get_property = moo_icon_view_get_property;
widget_class->map = moo_icon_view_map;
widget_class->realize = moo_icon_view_realize;
widget_class->unrealize = moo_icon_view_unrealize;
widget_class->size_request = moo_icon_view_size_request;
widget_class->size_allocate = moo_icon_view_size_allocate;
widget_class->expose_event = moo_icon_view_expose;
widget_class->scroll_event = moo_icon_view_scroll_event;
widget_class->button_press_event = moo_icon_view_button_press;
widget_class->button_release_event = moo_icon_view_button_release;
widget_class->motion_notify_event = moo_icon_view_motion_notify;
widget_class->drag_begin = moo_icon_view_drag_begin;
widget_class->drag_end = moo_icon_view_drag_end;
widget_class->drag_leave = moo_icon_view_drag_leave;
widget_class->drag_motion = moo_icon_view_drag_motion;
klass->set_scroll_adjustments = moo_icon_view_set_scroll_adjustments;
g_object_class_install_property (gobject_class,
PROP_PIXBUF_CELL,
g_param_spec_object ("pixbuf-cell",
"pixbuf-cell",
"pixbuf-cell",
GTK_TYPE_CELL_RENDERER,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_TEXT_CELL,
g_param_spec_object ("text-cell",
"text-cell",
"text-cell",
GTK_TYPE_CELL_RENDERER,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_MODEL,
g_param_spec_object ("model",
"model",
"model",
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE));
signals[ROW_ACTIVATED] =
g_signal_new ("row-activated",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooIconViewClass, row_activated),
NULL, NULL,
_moo_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE);
signals[SELECTION_CHANGED] =
g_signal_new ("selection-changed",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooIconViewClass, selection_changed),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[CURSOR_MOVED] =
g_signal_new ("cursor-moved",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooIconViewClass, cursor_moved),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 1,
GTK_TYPE_TREE_PATH | G_SIGNAL_TYPE_STATIC_SCOPE);
signals[SET_SCROLL_ADJUSTMENTS] =
g_signal_new ("set-scroll-adjustments",
G_OBJECT_CLASS_TYPE (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooIconViewClass, set_scroll_adjustments),
NULL, NULL,
_moo_marshal_VOID__OBJECT_OBJECT,
G_TYPE_NONE, 2,
GTK_TYPE_ADJUSTMENT,
GTK_TYPE_ADJUSTMENT);
widget_class->set_scroll_adjustments_signal = signals[SET_SCROLL_ADJUSTMENTS];
signals[ACTIVATE_ITEM_AT_CURSOR] =
moo_signal_new_cb ("activate-item-at-cursor",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (activate_item_at_cursor),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[MOVE_CURSOR] =
moo_signal_new_cb ("move-cursor",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (move_cursor),
NULL, NULL,
_moo_marshal_BOOLEAN__ENUM_INT_BOOLEAN,
G_TYPE_BOOLEAN, 3,
GTK_TYPE_MOVEMENT_STEP,
G_TYPE_INT, G_TYPE_BOOLEAN);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "activate-item-at-cursor", 0);
gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "activate-item-at-cursor", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "activate-item-at-cursor", 0);
add_move_binding (binding_set, GDK_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
add_move_binding (binding_set, GDK_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
add_move_binding (binding_set, GDK_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_KP_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
add_move_binding (binding_set, GDK_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_KP_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
add_move_binding (binding_set, GDK_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
add_move_binding (binding_set, GDK_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (binding_set, GDK_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
add_move_binding (binding_set, GDK_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
add_move_binding (binding_set, GDK_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
add_move_binding (binding_set, GDK_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
}
static void add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count)
{
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, TRUE);
if (modmask & GDK_CONTROL_MASK)
return;
gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"move_cursor", 3,
G_TYPE_ENUM, step,
G_TYPE_INT, count,
G_TYPE_BOOLEAN, TRUE);
}
static void
moo_icon_view_init (MooIconView *view)
{
GtkWidget *widget = GTK_WIDGET (view);
widget->allocation.width = -1;
widget->allocation.height = -1;
GTK_WIDGET_UNSET_FLAGS (view, GTK_NO_WINDOW);
GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
view->priv = g_new0 (MooIconViewPrivate, 1);
view->priv->pixbuf.cell = gtk_cell_renderer_pixbuf_new ();
gtk_object_sink (g_object_ref (view->priv->pixbuf.cell));
view->priv->pixbuf.attributes = NULL;
view->priv->pixbuf.func = cell_data_func;
view->priv->pixbuf.func_data = &view->priv->pixbuf;
view->priv->pixbuf.destroy = NULL;
view->priv->pixbuf.show = TRUE;
view->priv->text.cell = gtk_cell_renderer_text_new ();
gtk_object_sink (g_object_ref (view->priv->text.cell));
view->priv->text.attributes = NULL;
view->priv->text.func = cell_data_func;
view->priv->text.func_data = &view->priv->text;
view->priv->text.destroy = NULL;
view->priv->text.show = TRUE;
view->priv->pixel_icon_size = -1;
view->priv->icon_size = -1;
view->priv->xoffset = 0;
moo_icon_view_set_adjustment (view, NULL);
view->priv->update_idle = 0;
init_layout (view);
init_selection (view);
view->priv->dnd_info = g_new0 (DndInfo, 1);
}
static void moo_icon_view_finalize (GObject *object)
{
MooIconView *view = MOO_ICON_VIEW (object);
if (view->priv->model)
g_object_unref (view->priv->model);
g_object_unref (view->priv->adjustment);
if (view->priv->update_idle)
g_source_remove (view->priv->update_idle);
g_object_unref (view->priv->pixbuf.cell);
free_attributes (&view->priv->pixbuf);
if (view->priv->pixbuf.destroy)
view->priv->pixbuf.destroy (view->priv->pixbuf.func_data);
g_object_unref (view->priv->text.cell);
free_attributes (&view->priv->text);
if (view->priv->text.destroy)
view->priv->text.destroy (view->priv->text.func_data);
destroy_layout (view);
free_selection (view);
gtk_tree_row_reference_free (view->priv->cursor);
gtk_tree_row_reference_free (view->priv->scroll_to);
gtk_tree_row_reference_free (view->priv->drop_dest);
if (view->priv->dnd_info->source_targets)
gtk_target_list_unref (view->priv->dnd_info->source_targets);
if (view->priv->dnd_info->dest_targets)
gtk_target_list_unref (view->priv->dnd_info->dest_targets);
g_free (view->priv->dnd_info);
g_free (view->priv);
G_OBJECT_CLASS (moo_icon_view_parent_class)->finalize (object);
}
GtkWidget *moo_icon_view_new (void)
{
return GTK_WIDGET (g_object_new (MOO_TYPE_ICON_VIEW, NULL));
}
GtkWidget *moo_icon_view_new_with_model (GtkTreeModel *model)
{
return GTK_WIDGET (g_object_new (MOO_TYPE_ICON_VIEW,
"model", model,
NULL));
}
static void moo_icon_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MooIconView *view = MOO_ICON_VIEW (object);
switch (prop_id)
{
case PROP_MODEL:
moo_icon_view_set_model (view, g_value_get_object (value));
break;
case PROP_PIXBUF_CELL:
moo_icon_view_set_cell (view,
MOO_ICON_VIEW_CELL_PIXBUF,
g_value_get_object (value));
break;
case PROP_TEXT_CELL:
moo_icon_view_set_cell (view,
MOO_ICON_VIEW_CELL_TEXT,
g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void moo_icon_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MooIconView *view = MOO_ICON_VIEW (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, view->priv->model);
break;
case PROP_PIXBUF_CELL:
g_value_set_object (value, view->priv->pixbuf.cell);
break;
case PROP_TEXT_CELL:
g_value_set_object (value, view->priv->text.cell);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
GtkTreeModel *moo_icon_view_get_model (MooIconView *view)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
return view->priv->model;
}
GtkCellRenderer *moo_icon_view_get_cell (MooIconView *view,
MooIconViewCell cell_type)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
g_return_val_if_fail (cell_type == MOO_ICON_VIEW_CELL_PIXBUF ||
cell_type == MOO_ICON_VIEW_CELL_TEXT, NULL);
if (cell_type == MOO_ICON_VIEW_CELL_PIXBUF)
return view->priv->pixbuf.cell;
else
return view->priv->text.cell;
}
void moo_icon_view_set_model (MooIconView *view,
GtkTreeModel *model)
{
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (!model || GTK_IS_TREE_MODEL (model));
if (view->priv->model == model)
return;
if (view->priv->model)
{
g_signal_handlers_disconnect_by_func (view->priv->model,
(gpointer) row_changed,
view);
g_signal_handlers_disconnect_by_func (view->priv->model,
(gpointer) row_deleted,
view);
g_signal_handlers_disconnect_by_func (view->priv->model,
(gpointer) row_inserted,
view);
g_signal_handlers_disconnect_by_func (view->priv->model,
(gpointer) rows_reordered,
view);
g_object_unref (view->priv->model);
view->priv->model = NULL;
selection_clear (view);
gtk_tree_row_reference_free (view->priv->cursor);
gtk_tree_row_reference_free (view->priv->drop_dest);
gtk_tree_row_reference_free (view->priv->scroll_to);
view->priv->cursor = NULL;
view->priv->drop_dest = NULL;
view->priv->scroll_to = NULL;
}
if (model)
{
view->priv->model = model;
g_object_ref (model);
g_signal_connect (model, "row-changed",
G_CALLBACK (row_changed), view);
g_signal_connect (model, "row-deleted",
G_CALLBACK (row_deleted), view);
g_signal_connect (model, "row-inserted",
G_CALLBACK (row_inserted), view);
g_signal_connect (model, "rows-reordered",
G_CALLBACK (rows_reordered), view);
}
moo_icon_view_invalidate_layout (view);
g_object_notify (G_OBJECT (view), "model");
}
void moo_icon_view_set_cell (MooIconView *view,
MooIconViewCell cell_type,
GtkCellRenderer*cell)
{
CellInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (cell_type == MOO_ICON_VIEW_CELL_PIXBUF ||
cell_type == MOO_ICON_VIEW_CELL_TEXT);
if (cell_type == MOO_ICON_VIEW_CELL_PIXBUF)
info = &view->priv->pixbuf;
else
info = &view->priv->text;
if (info->cell == cell)
return;
g_object_unref (info->cell);
info->cell = cell;
gtk_object_sink (g_object_ref (cell));
moo_icon_view_invalidate_layout (view);
}
static void free_attributes (CellInfo *info)
{
GSList *l;
for (l = info->attributes; l != NULL; l = l->next->next)
g_free (l->data);
g_slist_free (info->attributes);
info->attributes = NULL;
}
void moo_icon_view_clear_attributes (MooIconView *view,
MooIconViewCell cell)
{
CellInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (cell == MOO_ICON_VIEW_CELL_PIXBUF ||
cell == MOO_ICON_VIEW_CELL_TEXT);
if (cell == MOO_ICON_VIEW_CELL_PIXBUF)
info = &view->priv->pixbuf;
else
info = &view->priv->text;
free_attributes (info);
moo_icon_view_invalidate_layout (view);
}
static void moo_icon_view_set_attributesv (MooIconView *view,
MooIconViewCell cell_type,
const char *first_attr,
va_list args)
{
char *attribute;
int column;
CellInfo *info;
moo_icon_view_clear_attributes (view, cell_type);
attribute = (char*) first_attr;
if (cell_type == MOO_ICON_VIEW_CELL_PIXBUF)
info = &view->priv->pixbuf;
else
info = &view->priv->text;
while (attribute != NULL)
{
column = va_arg (args, int);
info->attributes = g_slist_prepend (info->attributes,
GINT_TO_POINTER (column));
info->attributes = g_slist_prepend (info->attributes,
g_strdup (attribute));
attribute = va_arg (args, char*);
}
moo_icon_view_invalidate_layout (view);
}
void moo_icon_view_set_attributes (MooIconView *view,
MooIconViewCell cell_type,
const char *first_attr,
...)
{
va_list args;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (cell_type == MOO_ICON_VIEW_CELL_PIXBUF ||
cell_type == MOO_ICON_VIEW_CELL_TEXT);
va_start (args, first_attr);
moo_icon_view_set_attributesv (view, cell_type, first_attr, args);
va_end (args);
}
void moo_icon_view_set_cell_data_func (MooIconView *view,
MooIconViewCell cell,
MooIconCellDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
CellInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (cell == MOO_ICON_VIEW_CELL_PIXBUF ||
cell == MOO_ICON_VIEW_CELL_TEXT);
if (cell == MOO_ICON_VIEW_CELL_PIXBUF)
info = &view->priv->pixbuf;
else
info = &view->priv->text;
if (info->destroy)
info->destroy (info->func_data);
if (!func)
{
info->func = cell_data_func;
info->func_data = info;
info->destroy = NULL;
}
else
{
info->func = func;
info->func_data = func_data;
info->destroy = destroy;
}
moo_icon_view_invalidate_layout (view);
}
static gboolean check_empty (MooIconView *view)
{
return !view->priv->model || !view->priv->layout->columns;
}
static void moo_icon_view_map (GtkWidget *widget)
{
GTK_WIDGET_CLASS(moo_icon_view_parent_class)->map (widget);
moo_icon_view_invalidate_layout (MOO_ICON_VIEW (widget));
}
static void moo_icon_view_realize (GtkWidget *widget)
{
static GdkWindowAttr attributes;
gint attributes_mask;
MooIconView *view;
view = MOO_ICON_VIEW (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask = gtk_widget_get_events (widget)
| GDK_POINTER_MOTION_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_EXPOSURE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.wclass = GDK_INPUT_OUTPUT;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
widget->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
moo_icon_view_invalidate_layout (view);
}
static void moo_icon_view_unrealize (GtkWidget *widget)
{
gdk_window_set_user_data (widget->window, NULL);
gdk_window_destroy (widget->window);
widget->window = NULL;
GTK_WIDGET_UNSET_FLAGS (widget, GTK_REALIZED);
}
static void moo_icon_view_size_request (G_GNUC_UNUSED GtkWidget *widget,
GtkRequisition *requisition)
{
requisition->width = 0;
requisition->height = 0;
}
static void moo_icon_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
gboolean height_changed = FALSE;
MooIconView *view = MOO_ICON_VIEW (widget);
if (GTK_WIDGET_REALIZED (widget))
{
if (widget->allocation.height < 0 ||
view->priv->layout->row_height == 0)
{
height_changed = TRUE;
}
else
{
height_changed =
(allocation->height/view->priv->layout->row_height !=
view->priv->layout->num_rows);
}
}
widget->allocation = *allocation;
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x,
allocation->y,
allocation->width,
allocation->height);
}
if (height_changed)
moo_icon_view_invalidate_layout (view);
else
moo_icon_view_update_adjustment (view);
}
static void moo_icon_view_invalidate_layout (MooIconView *view)
{
if (!view->priv->update_idle)
view->priv->update_idle =
g_idle_add_full (G_PRIORITY_HIGH,
(GSourceFunc) moo_icon_view_update_layout,
view, NULL);
}
static void init_layout (MooIconView *view)
{
view->priv->layout = g_new0 (Layout, 1);
}
static void destroy_layout (MooIconView *view)
{
GSList *l;
for (l = view->priv->layout->columns; l != NULL; l = l->next)
{
Column *column = l->data;
gtk_tree_path_free (column->first);
g_ptr_array_free (column->entries, TRUE);
g_free (column);
}
g_free (view->priv->layout);
view->priv->layout = NULL;
}
static int num_entries (Column *column)
{
g_assert (column != NULL);
return column->entries->len;
}
static void draw_column (MooIconView *view,
Column *column,
GdkRegion *clip);
static void draw_entry (MooIconView *view,
GtkTreeIter *iter,
GtkTreePath *path,
GdkRectangle *entry_rect);
static gboolean moo_icon_view_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GSList *l;
GdkRegion *area;
MooIconView *view = MOO_ICON_VIEW (widget);
Layout *layout = view->priv->layout;
if (check_empty (view))
return TRUE;
area = gdk_region_copy (event->region);
gdk_region_offset (area, view->priv->xoffset, 0);
for (l = layout->columns; l != NULL; l = l->next)
{
GdkRectangle column_rect;
GdkRegion *column_region;
Column *column;
column = l->data;
column_rect.x = column->offset;
column_rect.y = 0;
column_rect.width = column->width;
column_rect.height = num_entries (column) * layout->row_height;
column_region = gdk_region_rectangle (&column_rect);
gdk_region_intersect (column_region, area);
if (!gdk_region_empty (column_region))
{
draw_column (view, column, column_region);
}
gdk_region_destroy (column_region);
}
gdk_region_destroy (area);
return TRUE;
}
static void draw_column (MooIconView *view,
Column *column,
GdkRegion *clip)
{
int i;
GdkRectangle clip_rect;
GtkTreeIter iter;
GtkTreePath *path;
Layout *layout = view->priv->layout;
gdk_region_get_clipbox (clip, &clip_rect);
gtk_tree_model_get_iter (view->priv->model, &iter,
column->first);
path = gtk_tree_path_copy (column->first);
for (i = 0; i < num_entries (column); ++i)
{
GdkRectangle entry_rect, dummy;
entry_rect.x = column->offset;
entry_rect.y = i * layout->row_height;
entry_rect.width = layout->pixbuf_width +
GPOINTER_TO_INT (column->entries->pdata[i]);
entry_rect.height = layout->row_height;
if (gdk_rectangle_intersect (&entry_rect,
&clip_rect,
&dummy))
{
entry_rect.x -= view->priv->xoffset;
draw_entry (view, &iter, path, &entry_rect);
}
gtk_tree_model_iter_next (view->priv->model, &iter);
gtk_tree_path_next (path);
}
gtk_tree_path_free (path);
}
static void draw_entry (MooIconView *view,
GtkTreeIter *iter,
GtkTreePath *path,
GdkRectangle *entry_rect)
{
GtkWidget *widget = GTK_WIDGET (view);
GdkRectangle cell_area = *entry_rect;
GtkCellRendererState state = 0;
GtkTreePath *cursor_path, *drop_path;
gboolean selected, cursor, drop;
selected = moo_icon_view_path_is_selected (view, path);
cursor_path = moo_icon_view_get_cursor (view);
cursor = cursor_path != NULL && !gtk_tree_path_compare (cursor_path, path);
gtk_tree_path_free (cursor_path);
drop_path = moo_icon_view_get_drag_dest_row (view);
drop = drop_path != NULL && !gtk_tree_path_compare (drop_path, path);
gtk_tree_path_free (drop_path);
if (selected || drop)
{
GdkGC *selection_gc;
if (GTK_WIDGET_HAS_FOCUS (widget) || drop)
{
selection_gc = widget->style->base_gc [GTK_STATE_SELECTED];
state = GTK_CELL_RENDERER_SELECTED | GTK_CELL_RENDERER_FOCUSED;
}
else
{
selection_gc = widget->style->base_gc [GTK_STATE_ACTIVE];
state = GTK_CELL_RENDERER_SELECTED;
}
gdk_draw_rectangle (widget->window,
selection_gc,
TRUE,
entry_rect->x,
entry_rect->y,
entry_rect->width,
entry_rect->height);
}
if (view->priv->pixbuf.show && view->priv->layout->pixbuf_height > 0)
{
view->priv->pixbuf.func (view, view->priv->pixbuf.cell,
view->priv->model, iter,
view->priv->pixbuf.func_data);
cell_area.width = view->priv->layout->pixbuf_width;
gtk_cell_renderer_render (view->priv->pixbuf.cell,
widget->window, widget,
entry_rect,
&cell_area,
entry_rect,
state);
}
if (view->priv->text.show && view->priv->layout->text_height > 0)
{
view->priv->text.func (view, view->priv->text.cell,
view->priv->model, iter,
view->priv->text.func_data);
cell_area.x += view->priv->layout->pixbuf_width;
cell_area.width = entry_rect->width - view->priv->layout->pixbuf_width;
gtk_cell_renderer_render (view->priv->text.cell,
widget->window, widget,
entry_rect,
&cell_area,
entry_rect,
state);
}
if (cursor || drop)
{
gtk_paint_focus (widget->style,
widget->window,
GTK_STATE_SELECTED,
entry_rect,
widget,
"icon_view",
entry_rect->x,
entry_rect->y,
entry_rect->width,
entry_rect->height);
}
}
static void cell_data_func (G_GNUC_UNUSED MooIconView *view,
GtkCellRenderer *cell,
GtkTreeModel *model,
GtkTreeIter *iter,
gpointer cell_info)
{
GSList *l;
CellInfo *info = cell_info;
static GValue value;
for (l = info->attributes; l && l->next; l = l->next->next)
{
gtk_tree_model_get_value (model, iter,
GPOINTER_TO_INT (l->next->data),
&value);
g_object_set_property (G_OBJECT (cell), (char*)l->data, &value);
g_value_unset (&value);
}
}
/****************************************************************************/
/* Creating layout
*/
static gboolean model_empty (GtkTreeModel *model)
{
GtkTreeIter iter;
return !gtk_tree_model_get_iter_first (model, &iter);
}
static void calculate_pixbuf_size (MooIconView *view);
static void calculate_row_height (MooIconView *view);
static gboolean calculate_column_width (MooIconView *view,
GtkTreeIter *iter,
Column *column);
static gboolean moo_icon_view_update_layout (MooIconView *view)
{
GtkWidget *widget = GTK_WIDGET (view);
Layout *layout = view->priv->layout;
GtkTreeModel *model = view->priv->model;
GtkTreeIter iter;
gboolean finish;
GSList *l;
int column_index;
view->priv->update_idle = 0;
gtk_widget_queue_draw (GTK_WIDGET (view));
for (l = layout->columns; l != NULL; l = l->next)
{
Column *column = l->data;
gtk_tree_path_free (column->first);
g_ptr_array_free (column->entries, TRUE);
g_free (column);
}
layout->columns = NULL;
layout->num_rows = 0;
layout->width = 0;
layout->height = 0;
layout->row_height = 0;
layout->pixbuf_width = 0;
layout->pixbuf_height = 0;
layout->text_height = 0;
if (!GTK_WIDGET_REALIZED (view) ||
!GTK_WIDGET_MAPPED (view) ||
!view->priv->model ||
model_empty (view->priv->model))
{
view->priv->xoffset = 0;
moo_icon_view_update_adjustment (view);
return FALSE;
}
calculate_pixbuf_size (view);
calculate_row_height (view);
layout->num_rows = MAX (widget->allocation.height / layout->row_height, 1);
layout->height = layout->row_height * layout->num_rows;
layout->width = 0;
gtk_tree_model_get_iter_first (model, &iter);
finish = FALSE;
column_index = 0;
while (!finish)
{
Column *column = g_new0 (Column, 1);
column->index = column_index++;
column->offset = layout->width;
column->entries = g_ptr_array_new ();
column->first = gtk_tree_model_get_path (model, &iter);
finish = !calculate_column_width (view, &iter, column);
layout->width += column->width;
layout->columns = g_slist_append (layout->columns, column);
}
if (view->priv->scroll_to)
{
if (gtk_tree_row_reference_valid (view->priv->scroll_to))
{
GtkTreePath *path = gtk_tree_row_reference_get_path (view->priv->scroll_to);
moo_icon_view_update_adjustment (view);
moo_icon_view_scroll_to_cell (view, path);
gtk_tree_path_free (path);
}
gtk_tree_row_reference_free (view->priv->scroll_to);
view->priv->scroll_to = NULL;
}
else
{
view->priv->xoffset = clamp_offset (view, view->priv->xoffset);
moo_icon_view_update_adjustment (view);
}
return FALSE;
}
static void set_pixbuf_size (MooIconView *view,
int width,
int height)
{
if (width < 0) width = 0;
if (height < 0) height = 0;
if (!width || !height)
{
view->priv->layout->pixbuf_width = 0;
view->priv->layout->pixbuf_height = 0;
}
else
{
view->priv->layout->pixbuf_width = width;
view->priv->layout->pixbuf_height = height;
}
}
static void calculate_pixbuf_size (MooIconView *view)
{
GtkTreeIter iter;
int width, height;
if (!view->priv->pixbuf.show)
return set_pixbuf_size (view, 0, 0);
if (view->priv->pixel_icon_size >= 0)
return set_pixbuf_size (view,
view->priv->pixel_icon_size,
view->priv->pixel_icon_size);
if (view->priv->icon_size >= 0)
{
if (gtk_icon_size_lookup (view->priv->icon_size, &width, &height))
return set_pixbuf_size (view, width, height);
}
g_object_get (view->priv->pixbuf.cell,
"height", &height,
"width", &width,
NULL);
if (height >= 0 && width >= 0)
return set_pixbuf_size (view, width, height);
gtk_tree_model_get_iter_first (view->priv->model, &iter);
view->priv->pixbuf.func (view, view->priv->pixbuf.cell,
view->priv->model, &iter,
view->priv->pixbuf.func_data);
gtk_cell_renderer_get_size (view->priv->pixbuf.cell,
GTK_WIDGET (view), NULL,
NULL, NULL, &width, &height);
set_pixbuf_size (view, width, height);
}
static void set_text_height (MooIconView *view,
int height)
{
if (height < 0) height = 0;
view->priv->layout->text_height = height;
view->priv->layout->row_height =
MAX (view->priv->layout->pixbuf_height, height);
}
static void calculate_row_height (MooIconView *view)
{
GtkTreeIter iter;
int height;
if (!view->priv->text.show)
return set_text_height (view, 0);
g_object_get (view->priv->text.cell,
"height", &height,
NULL);
if (height >= 0)
return set_text_height (view, height);
gtk_tree_model_get_iter_first (view->priv->model, &iter);
view->priv->text.func (view, view->priv->text.cell,
view->priv->model, &iter,
view->priv->text.func_data);
gtk_cell_renderer_get_size (view->priv->text.cell,
GTK_WIDGET (view), NULL,
NULL, NULL, NULL, &height);
set_text_height (view, height);
}
static gboolean calculate_column_width (MooIconView *view,
GtkTreeIter *iter,
Column *column)
{
Layout *layout = view->priv->layout;
int max_num = layout->num_rows;
GtkWidget *widget = GTK_WIDGET (view);
gboolean use_text = (layout->text_height > 0);
GtkTreeModel *model = view->priv->model;
g_ptr_array_set_size (column->entries, 0);
column->width = 0;
while (TRUE)
{
g_ptr_array_add (column->entries, NULL);
if (use_text)
{
int text_width;
view->priv->text.func (view, view->priv->text.cell,
model, iter,
view->priv->text.func_data);
gtk_cell_renderer_get_size (view->priv->text.cell,
widget, NULL, NULL, NULL,
&text_width, NULL);
if (column->width < text_width)
column->width = text_width;
column->entries->pdata[num_entries (column) - 1] =
GINT_TO_POINTER (text_width);
}
if (num_entries (column) == max_num)
{
column->width += layout->pixbuf_width;
return gtk_tree_model_iter_next (model, iter);
}
else
{
if (!gtk_tree_model_iter_next (model, iter))
{
column->width += layout->pixbuf_width;
return FALSE;
}
}
}
}
static int path_get_index (GtkTreePath *path)
{
g_assert (gtk_tree_path_get_depth (path) == 1);
return gtk_tree_path_get_indices(path)[0];
}
static Column *find_column_by_path (MooIconView *view,
GtkTreePath *path,
int *index_)
{
GSList *l;
int path_index;
path_index = path_get_index (path);
for (l = view->priv->layout->columns; l != NULL; l = l->next)
{
Column *column = l->data;
int first = path_get_index (column->first);
if (first <= path_index && path_index < first +
num_entries (column))
{
if (index_)
*index_ = path_index - first;
return column;
}
}
g_return_val_if_reached (NULL);
}
static void row_changed (G_GNUC_UNUSED GtkTreeModel *model,
GtkTreePath *path,
G_GNUC_UNUSED GtkTreeIter *iter,
MooIconView *view)
{
if (!GTK_WIDGET_REALIZED (view) ||
!GTK_WIDGET_MAPPED (view))
return;
if (gtk_tree_path_get_depth (path) != 1)
return;
drag_scroll_stop (view);
moo_icon_view_invalidate_layout (view);
}
static void row_deleted (G_GNUC_UNUSED GtkTreeModel *model,
GtkTreePath *path,
MooIconView *view)
{
if (gtk_tree_path_get_depth (path) != 1)
return;
selection_row_deleted (view);
cursor_row_deleted (view);
if (!GTK_WIDGET_REALIZED (view) ||
!GTK_WIDGET_MAPPED (view))
return;
drag_scroll_stop (view);
moo_icon_view_invalidate_layout (view);
}
static void row_inserted (G_GNUC_UNUSED GtkTreeModel *model,
GtkTreePath *path,
G_GNUC_UNUSED GtkTreeIter *iter,
MooIconView *view)
{
if (!GTK_WIDGET_REALIZED (view) ||
!GTK_WIDGET_MAPPED (view))
return;
if (gtk_tree_path_get_depth (path) != 1)
return;
drag_scroll_stop (view);
moo_icon_view_invalidate_layout (view);
}
static void rows_reordered (G_GNUC_UNUSED GtkTreeModel *model,
GtkTreePath *path,
G_GNUC_UNUSED GtkTreeIter *iter,
G_GNUC_UNUSED gpointer whatever,
MooIconView *view)
{
if (!GTK_WIDGET_REALIZED (view) ||
!GTK_WIDGET_MAPPED (view))
return;
if (gtk_tree_path_get_depth (path) != 0)
return;
drag_scroll_stop (view);
moo_icon_view_invalidate_layout (view);
}
static void invalidate_cell_rect (MooIconView *view,
Column *column,
int index_)
{
GdkRectangle rect;
if (!GTK_WIDGET_REALIZED (view) || view->priv->update_idle)
return;
rect.x = column->offset - view->priv->xoffset;
rect.y = index_ * view->priv->layout->row_height;
rect.width = column->width;
rect.height = view->priv->layout->row_height;
gdk_window_invalidate_rect (GTK_WIDGET(view)->window, &rect, FALSE);
}
static void
moo_icon_view_set_scroll_adjustments (GtkWidget *widget,
GtkAdjustment *hadj,
G_GNUC_UNUSED GtkAdjustment *vadj)
{
moo_icon_view_set_adjustment (MOO_ICON_VIEW (widget), hadj);
}
static void value_changed (MooIconView *view,
GtkAdjustment *adj)
{
if (adj->value != view->priv->xoffset)
moo_icon_view_scroll_to (view, adj->value);
}
static void moo_icon_view_update_adjustment (MooIconView *view)
{
GSList *link;
link = g_slist_last (view->priv->layout->columns);
view->priv->xoffset = clamp_offset (view, view->priv->xoffset);
if (!link || view->priv->layout->width <= GTK_WIDGET(view)->allocation.width)
{
view->priv->adjustment->lower = 0;
view->priv->adjustment->upper = GTK_WIDGET(view)->allocation.width - 1;
view->priv->adjustment->value = 0;
view->priv->adjustment->step_increment = GTK_WIDGET(view)->allocation.width - 1;
view->priv->adjustment->page_increment = GTK_WIDGET(view)->allocation.width - 1;
view->priv->adjustment->page_size = GTK_WIDGET(view)->allocation.width - 1;
}
else
{
Column *column = link->data;
view->priv->adjustment->lower = 0;
view->priv->adjustment->upper =
view->priv->layout->width - 1;
view->priv->adjustment->value = view->priv->xoffset;
view->priv->adjustment->page_increment = GTK_WIDGET(view)->allocation.width;
view->priv->adjustment->step_increment =
view->priv->layout->width / (column->index + 1);
view->priv->adjustment->page_size = GTK_WIDGET(view)->allocation.width;
}
gtk_adjustment_changed (view->priv->adjustment);
}
void moo_icon_view_set_adjustment (MooIconView *view,
GtkAdjustment *adjustment)
{
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (!adjustment || GTK_IS_ADJUSTMENT (adjustment));
if (!adjustment)
adjustment = GTK_ADJUSTMENT (gtk_adjustment_new (0,0,0,0,0,0));
if (view->priv->adjustment)
{
g_signal_handlers_disconnect_by_func (view->priv->adjustment,
(gpointer) value_changed,
view);
g_object_unref (view->priv->adjustment);
}
view->priv->adjustment = adjustment;
gtk_object_sink (g_object_ref (adjustment));
g_signal_connect_swapped (adjustment, "value-changed",
G_CALLBACK (value_changed),
view);
if (GTK_WIDGET_REALIZED (view) && GTK_WIDGET_MAPPED (view))
moo_icon_view_update_adjustment (view);
}
static gboolean
moo_icon_view_button_press (GtkWidget *widget,
GdkEventButton *event)
{
MooIconView *view = MOO_ICON_VIEW (widget);
GtkTreePath *path = NULL;
GtkTreePath *cursor_path = NULL;
GdkModifierType mods = event->state & gtk_accelerator_get_default_mod_mask ();
view->priv->button_pressed = 0;
if (event->button == 1)
{
gtk_widget_grab_focus (widget);
moo_icon_view_get_path_at_pos (view, event->x, event->y,
&path, NULL, NULL, NULL);
if (path)
{
switch (event->type)
{
case GDK_BUTTON_PRESS:
if (mods & GDK_SHIFT_MASK)
{
cursor_path = ensure_cursor (view);
moo_icon_view_unselect_all (view);
moo_icon_view_select_range (view, path, cursor_path);
}
else if (mods & GDK_CONTROL_MASK)
{
if (moo_icon_view_path_is_selected (view, path))
moo_icon_view_unselect_path (view, path);
else
moo_icon_view_select_path (view, path);
}
else
{
moo_icon_view_unselect_all (view);
moo_icon_view_set_cursor (view, path, FALSE);
}
gtk_tree_path_free (path);
gtk_tree_path_free (cursor_path);
/* do i care? */
view->priv->button_pressed = event->button;
view->priv->button_press_x = event->x;
view->priv->button_press_y = event->y;
return TRUE;
case GDK_2BUTTON_PRESS:
activate_item_at_cursor (view);
gtk_tree_path_free (path);
return TRUE;
default:
gtk_tree_path_free (path);
return FALSE;
}
}
}
return FALSE;
}
static gboolean
moo_icon_view_motion_notify (GtkWidget *widget,
GdkEventMotion *event)
{
MooIconView *view = MOO_ICON_VIEW (widget);
drag_scroll_stop (view);
return moo_icon_view_maybe_drag (view, event);
}
static gboolean
moo_icon_view_button_release (GtkWidget *widget,
G_GNUC_UNUSED GdkEventButton *event)
{
MooIconView *view = MOO_ICON_VIEW (widget);
view->priv->button_pressed = 0;
return FALSE;
}
static void invalidate_path_rectangle (MooIconView *view,
GtkTreePath *path)
{
Column *column;
int index_;
if (!GTK_WIDGET_REALIZED (view) || view->priv->update_idle)
return;
if (check_empty (view))
return;
column = find_column_by_path (view, path, &index_);
g_return_if_fail (column != NULL);
invalidate_cell_rect (view, column, index_);
}
static void move_cursor_right (MooIconView *view,
gboolean extend_selection);
static void move_cursor_left (MooIconView *view,
gboolean extend_selection);
static void move_cursor_up (MooIconView *view,
gboolean extend_selection);
static void move_cursor_down (MooIconView *view,
gboolean extend_selection);
static void move_cursor_page_up (MooIconView *view,
gboolean extend_selection);
static void move_cursor_page_down (MooIconView *view,
gboolean extend_selection);
static void move_cursor_home (MooIconView *view,
gboolean extend_selection);
static void move_cursor_end (MooIconView *view,
gboolean extend_selection);
static gboolean move_cursor (MooIconView *view,
GtkMovementStep step,
gint count,
gboolean extend_selection)
{
int i;
if (check_empty (view))
return TRUE;
switch (step)
{
case GTK_MOVEMENT_LOGICAL_POSITIONS: /* left/right */
case GTK_MOVEMENT_VISUAL_POSITIONS:
if (count > 0)
for (i = 0; i < count; ++i)
move_cursor_right (view, extend_selection);
else
for (i = 0; i < -count; ++i)
move_cursor_left (view, extend_selection);
return TRUE;
case GTK_MOVEMENT_DISPLAY_LINES: /* up/down */
if (count > 0)
for (i = 0; i < count; ++i)
move_cursor_down (view, extend_selection);
else
for (i = 0; i < -count; ++i)
move_cursor_up (view, extend_selection);
return TRUE;
case GTK_MOVEMENT_PAGES: /* pgup/pgdown */
if (count > 0)
for (i = 0; i < count; ++i)
move_cursor_page_down (view, extend_selection);
else
for (i = 0; i < -count; ++i)
move_cursor_page_up (view, extend_selection);
return TRUE;
case GTK_MOVEMENT_BUFFER_ENDS: /* home/end */
if (count > 0)
move_cursor_end (view, extend_selection);
else if (count < 0)
move_cursor_home (view, extend_selection);
return TRUE;
default:
g_return_val_if_reached (FALSE);
}
}
static GtkTreePath *column_get_path (Column *column,
int index_)
{
int first;
g_return_val_if_fail (column != NULL, NULL);
g_return_val_if_fail (index_ >= 0, NULL);
g_return_val_if_fail (index_ < num_entries (column), NULL);
first = gtk_tree_path_get_indices(column->first)[0];
return gtk_tree_path_new_from_indices (first + index_, -1);
}
static int get_n_columns (MooIconView *view)
{
return g_slist_length (view->priv->layout->columns);
}
static Column *get_nth_column (MooIconView *view,
int n)
{
return g_slist_nth_data (view->priv->layout->columns, n);
}
static Column *column_next (MooIconView *view,
Column *column)
{
g_return_val_if_fail (column != NULL, NULL);
if (column->index == get_n_columns (view) - 1)
return NULL;
else
return get_nth_column (view, column->index + 1);
}
static Column *column_prev (MooIconView *view,
Column *column)
{
g_return_val_if_fail (column != NULL, NULL);
if (column->index == 0)
return NULL;
else
return get_nth_column (view, column->index - 1);
}
static GtkTreePath *ensure_cursor (MooIconView *view)
{
if (!view->priv->cursor)
{
GtkTreePath *path = gtk_tree_path_new_from_indices (0, -1);
view->priv->cursor = gtk_tree_row_reference_new (view->priv->model, path);
return path;
}
else
{
return gtk_tree_row_reference_get_path (view->priv->cursor);
}
}
static void move_cursor_to_entry (MooIconView *view,
Column *column,
int index_,
gboolean extend_selection)
{
GtkTreePath *path = column_get_path (column, index_);
if (extend_selection)
{
GtkTreePath *cursor_path = ensure_cursor (view);
moo_icon_view_select_range (view, cursor_path, path);
gtk_tree_path_free (cursor_path);
}
else
{
moo_icon_view_unselect_all (view);
}
moo_icon_view_set_cursor (view, path, FALSE);
moo_icon_view_scroll_to_cell (view, path);
gtk_tree_path_free (path);
}
static void move_cursor_right (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *next;
int y;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &y);
g_return_if_fail (column != NULL);
next = column_next (view, column);
if (!next)
{
move_cursor_to_entry (view, column,
num_entries (column) - 1,
extend_selection);
}
else
{
if (y >= num_entries (next))
y = num_entries (next) - 1;
move_cursor_to_entry (view, next, y,
extend_selection);
}
gtk_tree_path_free (path);
}
static void move_cursor_left (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *prev;
int index_;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &index_);
g_return_if_fail (column != NULL);
prev = column_prev (view, column);
if (!prev)
move_cursor_to_entry (view, column, 0,
extend_selection);
else
move_cursor_to_entry (view, prev, index_,
extend_selection);
gtk_tree_path_free (path);
}
static void move_cursor_up (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *prev;
int y;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &y);
g_return_if_fail (column != NULL);
if (y)
{
move_cursor_to_entry (view, column, y - 1,
extend_selection);
}
else
{
prev = column_prev (view, column);
if (!prev)
moo_icon_view_select_path (view, path);
else
move_cursor_to_entry (view, prev, prev->entries->len - 1,
extend_selection);
}
gtk_tree_path_free (path);
}
static void move_cursor_down (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *next;
int y;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &y);
g_return_if_fail (column != NULL);
if (y < num_entries (column) - 1)
{
move_cursor_to_entry (view, column, y + 1,
extend_selection);
}
else
{
next = column_next (view, column);
if (!next)
moo_icon_view_select_path (view, path);
else
move_cursor_to_entry (view, next, 0,
extend_selection);
}
gtk_tree_path_free (path);
}
static void move_cursor_page_up (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *prev;
int index_;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &index_);
g_return_if_fail (column != NULL);
prev = column_prev (view, column);
if (index_ || !prev)
move_cursor_to_entry (view, column, 0,
extend_selection);
else
move_cursor_to_entry (view, prev, 0,
extend_selection);
gtk_tree_path_free (path);
}
static void move_cursor_page_down (MooIconView *view,
gboolean extend_selection)
{
GtkTreePath *path;
Column *column, *next;
int index_;
path = ensure_cursor (view);
column = find_column_by_path (view, path, &index_);
g_return_if_fail (column != NULL);
next = column_next (view, column);
if (index_ < num_entries (column) - 1 || !next)
move_cursor_to_entry (view, column,
num_entries (column) - 1,
extend_selection);
else
move_cursor_to_entry (view, next,
num_entries (next) - 1,
extend_selection);
gtk_tree_path_free (path);
}
static void move_cursor_home (MooIconView *view,
gboolean extend_selection)
{
Column *column;
column = view->priv->layout->columns->data;
move_cursor_to_entry (view, column, 0,
extend_selection);
}
static void move_cursor_end (MooIconView *view,
gboolean extend_selection)
{
Column *column;
column = g_slist_last (view->priv->layout->columns)->data;
move_cursor_to_entry (view, column,
num_entries (column) - 1,
extend_selection);
}
static void moo_icon_view_scroll_to (MooIconView *view,
int offset)
{
g_return_if_fail (GTK_WIDGET_REALIZED (view));
offset = clamp_offset (view, offset);
if (offset == view->priv->xoffset)
return;
gdk_window_scroll (GTK_WIDGET(view)->window, view->priv->xoffset - offset, 0);
view->priv->xoffset = offset;
moo_icon_view_update_adjustment (view);
}
/* this is what GtkRange does */
static double get_wheel_delta (MooIconView *view)
{
GtkAdjustment *adj = view->priv->adjustment;
#if 1
return pow (adj->page_size, 2.0 / 3.0);
#else
return adj->step_increment * 2;
#endif
}
static gboolean moo_icon_view_scroll_event (GtkWidget *widget,
GdkEventScroll *event)
{
MooIconView *view = MOO_ICON_VIEW (widget);
int offset = view->priv->xoffset;
switch (event->direction)
{
case GDK_SCROLL_UP:
case GDK_SCROLL_LEFT:
offset -= get_wheel_delta (view);
break;
case GDK_SCROLL_DOWN:
case GDK_SCROLL_RIGHT:
offset += get_wheel_delta (view);
break;
}
moo_icon_view_scroll_to (view, offset);
return TRUE;
}
static int clamp_offset (MooIconView *view,
int offset)
{
int layout_width = view->priv->layout->width;
int width = GTK_WIDGET(view)->allocation.width;
if (layout_width <= width)
return 0;
else
return CLAMP (offset, 0, layout_width - width - 1);
}
/********************************************************************/
/* moo_icon_view_get_path_at_pos
*/
static Column *get_column_at_x (MooIconView *view,
int x)
{
GSList *link;
if (x < 0 || x >= view->priv->layout->width)
return NULL;
for (link = view->priv->layout->columns; link != NULL; link = link->next)
{
Column *column = link->data;
if (column->offset <= x && x < column->offset + column->width)
return column;
}
return NULL;
}
static gboolean column_get_path_at_xy (MooIconView *view,
Column *column,
int x,
int y,
GtkTreePath **pathp,
MooIconViewCell *cell,
int *cell_x,
int *cell_y)
{
int index_;
int pixbuf_width;
GtkTreeIter iter;
GtkTreePath *path;
g_return_val_if_fail (column != NULL, FALSE);
g_return_val_if_fail (x < column->width, FALSE);
index_ = y / view->priv->layout->row_height;
if (index_ < 0 || index_ >= num_entries (column))
return FALSE;
path = gtk_tree_path_new_from_indices (index_ + path_get_index (column->first), -1);
if (!gtk_tree_model_get_iter (view->priv->model, &iter, path))
{
gtk_tree_path_free (path);
g_return_val_if_reached (FALSE);
}
pixbuf_width = view->priv->layout->pixbuf_width;
if (x < pixbuf_width)
{
if (pathp)
*pathp = path;
else
gtk_tree_path_free (path);
if (cell)
*cell = MOO_ICON_VIEW_CELL_PIXBUF;
if (cell_x)
*cell_x = x;
if (cell_y)
*cell_y = y - index_ * view->priv->layout->row_height;
return TRUE;
}
else if (view->priv->layout->text_height > 0)
{
int text_width;
view->priv->text.func (view, view->priv->text.cell,
view->priv->model, &iter,
view->priv->text.func_data);
gtk_cell_renderer_get_size (view->priv->text.cell,
GTK_WIDGET (view), NULL,
NULL, NULL, &text_width, NULL);
if (x < text_width + pixbuf_width)
{
if (pathp)
*pathp = path;
else
gtk_tree_path_free (path);
if (cell)
*cell = MOO_ICON_VIEW_CELL_TEXT;
if (cell_x)
*cell_x = x - pixbuf_width;
if (cell_y)
*cell_y = y - index_ * view->priv->layout->row_height;
return TRUE;
}
}
gtk_tree_path_free (path);
return FALSE;
}
gboolean moo_icon_view_get_path_at_pos (MooIconView *view,
int x,
int y,
GtkTreePath **path,
MooIconViewCell *cell,
int *cell_x,
int *cell_y)
{
Column *column;
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), FALSE);
column = get_column_at_x (view, x + view->priv->xoffset);
if (!column)
return FALSE;
else
return column_get_path_at_xy (view, column,
x + view->priv->xoffset - column->offset,
y, path, cell, cell_x, cell_y);
}
void
moo_icon_view_widget_to_abs_coords (MooIconView *view,
int wx,
int wy,
int *absx,
int *absy)
{
g_return_if_fail (MOO_IS_ICON_VIEW (view));
if (absx)
*absx = wx + view->priv->xoffset;
if (absy)
*absy = wy;
}
void
moo_icon_view_abs_to_widget_coords (MooIconView *view,
int absx,
int absy,
int *wx,
int *wy)
{
g_return_if_fail (MOO_IS_ICON_VIEW (view));
if (wx)
*wx = absx - view->priv->xoffset;
if (wy)
*wy = absy;
}
/**************************************************************************/
/* Selection and cursor
*/
struct _Selection {
GtkSelectionMode mode;
GSList *selected; /* GtkTreeRowReference* */
};
static void
init_selection (MooIconView *view)
{
view->priv->selection = g_new (Selection, 1);
view->priv->selection->mode = GTK_SELECTION_SINGLE;
view->priv->selection->selected = NULL;
}
static void
free_selection (MooIconView *view)
{
g_slist_foreach (view->priv->selection->selected,
(GFunc) gtk_tree_row_reference_free, NULL);
g_slist_free (view->priv->selection->selected);
g_free (view->priv->selection);
view->priv->selection = NULL;
}
static void
selection_changed (MooIconView *view)
{
g_signal_emit (view, signals[SELECTION_CHANGED], 0);
}
static void
cursor_moved (MooIconView *view)
{
g_signal_emit (view, signals[CURSOR_MOVED], 0);
}
static void
selection_clear (MooIconView *view)
{
g_slist_foreach (view->priv->selection->selected,
(GFunc) gtk_tree_row_reference_free, NULL);
g_slist_free (view->priv->selection->selected);
selection_changed (view);
}
static void
selection_row_deleted (MooIconView *view)
{
GSList *link;
Selection *sel = view->priv->selection;
for (link = sel->selected; link != NULL; link = link->next)
{
if (!gtk_tree_row_reference_valid (link->data))
{
gtk_tree_row_reference_free (link->data);
sel->selected = g_slist_delete_link (sel->selected, link);
selection_changed (view);
return;
}
}
}
void
moo_icon_view_set_selection_mode (MooIconView *view,
GtkSelectionMode mode)
{
Selection *selection;
GtkTreePath *path = NULL;
gboolean select_cursor = FALSE;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
selection = view->priv->selection;
if (selection->mode == mode)
return;
selection->mode = mode;
if (!view->priv->model || model_empty (view->priv->model))
return;
if (mode == GTK_SELECTION_MULTIPLE)
return;
switch (mode)
{
case GTK_SELECTION_NONE:
moo_icon_view_unselect_all (view);
return;
case GTK_SELECTION_BROWSE:
case GTK_SELECTION_SINGLE:
break;
default:
g_return_if_reached ();
}
if (mode == GTK_SELECTION_BROWSE)
select_cursor = TRUE;
if (!select_cursor &&
(path = moo_icon_view_get_cursor (view)))
{
if (moo_icon_view_path_is_selected (view, path))
select_cursor = TRUE;
}
moo_icon_view_unselect_all (view);
if (select_cursor)
{
if (!path)
path = moo_icon_view_get_cursor (view);
if (!path)
{
path = gtk_tree_path_new_from_indices (0, -1);
moo_icon_view_set_cursor (view, path, FALSE);
}
else
{
moo_icon_view_select_path (view, path);
}
}
gtk_tree_path_free (path);
selection_changed (view);
}
GtkTreePath *
moo_icon_view_get_selected_path (MooIconView *view)
{
Selection *selection;
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
selection = view->priv->selection;
if (!selection->selected)
return NULL;
return gtk_tree_row_reference_get_path (view->priv->selection->selected->data);
}
gboolean
moo_icon_view_get_selected (MooIconView *view,
GtkTreeIter *iter)
{
GtkTreePath *path = NULL;
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), FALSE);
path = moo_icon_view_get_selected_path (view);
if (path)
{
if (iter)
gtk_tree_model_get_iter (view->priv->model, iter, path);
gtk_tree_path_free (path);
return TRUE;
}
else
{
return FALSE;
}
}
void
moo_icon_view_selected_foreach (MooIconView *view,
GtkTreeSelectionForeachFunc func,
gpointer data)
{
Selection *selection;
GSList *link;
GtkTreePath *path;
GtkTreeIter iter;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (func != NULL);
selection = view->priv->selection;
for (link = selection->selected; link != NULL; link = link->next)
{
g_assert (gtk_tree_row_reference_valid (link->data));
path = gtk_tree_row_reference_get_path (link->data);
gtk_tree_model_get_iter (view->priv->model, &iter, path);
func (view->priv->model, path, &iter, data);
gtk_tree_path_free (path);
}
}
static void
prepend_path (G_GNUC_UNUSED GtkTreeModel *model,
GtkTreePath *path,
G_GNUC_UNUSED GtkTreeIter *iter,
GList **list)
{
*list = g_list_prepend (*list, gtk_tree_path_copy (path));
}
GList*
moo_icon_view_get_selected_rows (MooIconView *view)
{
GList *list = NULL;
moo_icon_view_selected_foreach (view,
(GtkTreeSelectionForeachFunc) prepend_path,
&list);
return g_list_reverse (list);
}
int
moo_icon_view_count_selected_rows (MooIconView *view)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), 0);
return g_slist_length (view->priv->selection->selected);
}
static int
row_reference_compare (GtkTreeRowReference *ref1,
GtkTreeRowReference *ref2)
{
int result;
GtkTreePath *path1, *path2;
path1 = gtk_tree_row_reference_get_path (ref1);
path2 = gtk_tree_row_reference_get_path (ref2);
result = gtk_tree_path_compare (path1, path2);
gtk_tree_path_free (path1);
gtk_tree_path_free (path2);
return result;
}
void
moo_icon_view_select_path (MooIconView *view,
GtkTreePath *path)
{
Selection *selection;
GtkTreeRowReference *ref;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (path != NULL);
g_return_if_fail (gtk_tree_path_get_depth (path) == 1);
selection = view->priv->selection;
g_return_if_fail (selection->mode != GTK_SELECTION_NONE);
ref = gtk_tree_row_reference_new (view->priv->model, path);
g_return_if_fail (ref != NULL);
if (selection->mode == GTK_SELECTION_SINGLE ||
selection->mode == GTK_SELECTION_BROWSE)
{
moo_icon_view_unselect_all (view);
g_assert (selection->selected == NULL);
selection->selected = g_slist_prepend (selection->selected, ref);
invalidate_path_rectangle (view, path);
selection_changed (view);
return;
}
if (!g_slist_find_custom (view->priv->selection->selected, ref,
(GCompareFunc) row_reference_compare))
{
selection->selected = g_slist_prepend (selection->selected, ref);
invalidate_path_rectangle (view, path);
selection_changed (view);
return;
}
}
void
moo_icon_view_select_range (MooIconView *view,
GtkTreePath *start,
GtkTreePath *end)
{
Selection *selection;
GtkTreePath *path;
int start_index, end_index, i;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (start != NULL && end != NULL);
g_return_if_fail (gtk_tree_path_get_depth (start) == 1);
g_return_if_fail (gtk_tree_path_get_depth (end) == 1);
selection = view->priv->selection;
g_return_if_fail (selection->mode != GTK_SELECTION_NONE);
if (selection->mode != GTK_SELECTION_MULTIPLE)
{
g_return_if_fail (!gtk_tree_path_compare (start, end));
return moo_icon_view_select_path (view, start);
}
start_index = gtk_tree_path_get_indices(start)[0];
end_index = gtk_tree_path_get_indices(end)[0];
if (start_index > end_index)
{
int tmp = start_index;
start_index = end_index;
end_index = tmp;
}
path = gtk_tree_path_new_from_indices (start_index, -1);
for (i = start_index; i <= end_index; ++i, gtk_tree_path_next (path))
moo_icon_view_select_path (view, path);
gtk_tree_path_free (path);
}
void
moo_icon_view_unselect_path (MooIconView *view,
GtkTreePath *path)
{
Selection *selection;
GSList *link;
GtkTreePath *selected;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (path != NULL);
if (gtk_tree_path_get_depth (path) != 1)
return;
selection = view->priv->selection;
for (link = selection->selected; link != NULL; link = link->next)
{
g_assert (gtk_tree_row_reference_valid (link->data));
selected = gtk_tree_row_reference_get_path (link->data);
if (!gtk_tree_path_compare (selected, path))
{
gtk_tree_row_reference_free (link->data);
gtk_tree_path_free (selected);
selection->selected =
g_slist_delete_link (selection->selected, link);
invalidate_path_rectangle (view, path);
selection_changed (view);
return;
}
gtk_tree_path_free (selected);
}
}
gboolean
moo_icon_view_path_is_selected (MooIconView *view,
GtkTreePath *path)
{
Selection *selection;
GSList *link;
GtkTreePath *selected;
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), FALSE);
g_return_val_if_fail (path != NULL, FALSE);
if (gtk_tree_path_get_depth (path) != 1)
return FALSE;
selection = view->priv->selection;
for (link = selection->selected; link != NULL; link = link->next)
{
g_assert (gtk_tree_row_reference_valid (link->data));
selected = gtk_tree_row_reference_get_path (link->data);
if (!gtk_tree_path_compare (selected, path))
{
gtk_tree_path_free (selected);
return TRUE;
}
gtk_tree_path_free (selected);
}
return FALSE;
}
void
moo_icon_view_select_all (MooIconView *view)
{
GtkTreeIter iter;
Selection *selection;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
if (!view->priv->model || model_empty (view->priv->model))
return;
selection = view->priv->selection;
g_slist_foreach (selection->selected,
(GFunc) gtk_tree_row_reference_free, NULL);
g_slist_free (selection->selected);
selection->selected = NULL;
gtk_tree_model_get_iter_first (view->priv->model, &iter);
do {
GtkTreePath *path;
GtkTreeRowReference *ref;
path = gtk_tree_model_get_path (view->priv->model, &iter);
g_return_if_fail (path != NULL);
ref = gtk_tree_row_reference_new (view->priv->model, path);
selection->selected = g_slist_prepend (selection->selected, ref);
gtk_tree_path_free (path);
}
while (gtk_tree_model_iter_next (view->priv->model, &iter));
selection->selected = g_slist_reverse (selection->selected);
gtk_widget_queue_draw (GTK_WIDGET (view));
selection_changed (view);
}
void
moo_icon_view_unselect_all (MooIconView *view)
{
Selection *selection;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
selection = view->priv->selection;
if (!selection->selected)
return;
g_return_if_fail (selection->mode != GTK_SELECTION_BROWSE);
g_slist_foreach (selection->selected,
(GFunc) gtk_tree_row_reference_free, NULL);
g_slist_free (selection->selected);
selection->selected = NULL;
gtk_widget_queue_draw (GTK_WIDGET (view));
selection_changed (view);
}
void
moo_icon_view_scroll_to_cell (MooIconView *view,
GtkTreePath *path)
{
Column *column;
int xoffset, new_offset;
GtkWidget *widget;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (path != NULL);
g_return_if_fail (gtk_tree_path_get_depth (path) == 1);
g_return_if_fail (view->priv->model != NULL);
g_return_if_fail (!model_empty (view->priv->model));
if (!GTK_WIDGET_REALIZED (view) || view->priv->update_idle)
{
if (view->priv->scroll_to)
gtk_tree_row_reference_free (view->priv->scroll_to);
view->priv->scroll_to = gtk_tree_row_reference_new (view->priv->model, path);
return;
}
column = find_column_by_path (view, path, NULL);
g_return_if_fail (column != NULL);
xoffset = view->priv->xoffset;
new_offset = xoffset;
widget = GTK_WIDGET(view);
if (widget->allocation.width <= column->width)
new_offset = column->offset;
else if (column->offset < xoffset)
new_offset = column->offset;
else if (column->offset + column->width > xoffset + widget->allocation.width)
new_offset = column->offset + column->width - widget->allocation.width;
moo_icon_view_scroll_to (view, new_offset);
}
void
moo_icon_view_set_cursor (MooIconView *view,
GtkTreePath *path,
gboolean start_editing)
{
GtkTreeRowReference *ref;
GtkTreePath *old;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (path != NULL);
ref = gtk_tree_row_reference_new (view->priv->model, path);
g_return_if_fail (ref != NULL);
old = moo_icon_view_get_cursor (view);
if (old)
{
invalidate_path_rectangle (view, old);
gtk_tree_path_free (old);
gtk_tree_row_reference_free (view->priv->cursor);
}
view->priv->cursor = ref;
moo_icon_view_select_path (view, path);
cursor_moved (view);
if (start_editing)
{
moo_icon_view_scroll_to_cell (view, path);
/* TODO */
g_warning ("%s: implement me", G_STRLOC);
}
}
GtkTreePath *
moo_icon_view_get_cursor (MooIconView *view)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
if (view->priv->cursor)
return gtk_tree_row_reference_get_path (view->priv->cursor);
else
return NULL;
}
static void
cursor_row_deleted (MooIconView *view)
{
if (view->priv->cursor)
{
if (!gtk_tree_row_reference_valid (view->priv->cursor))
{
gtk_tree_row_reference_free (view->priv->cursor);
view->priv->cursor = NULL;
cursor_moved (view);
}
}
}
void
moo_icon_view_row_activated (MooIconView *view,
GtkTreePath *path)
{
g_return_if_fail (MOO_IS_ICON_VIEW (view));
g_return_if_fail (path != NULL);
g_signal_emit (view, signals[ROW_ACTIVATED], 0, path);
}
static void
activate_item_at_cursor (MooIconView *view)
{
GtkTreePath *path;
if (!view->priv->cursor)
return;
path = gtk_tree_row_reference_get_path (view->priv->cursor);
g_return_if_fail (path != NULL);
moo_icon_view_row_activated (view, path);
gtk_tree_path_free (path);
}
/********************************************************************/
/* Drag'n'drop
*/
void
moo_icon_view_enable_drag_source (MooIconView *view,
GdkModifierType start_button_mask,
GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions)
{
DndInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
gtk_drag_source_set (GTK_WIDGET (view), 0, targets, n_targets, actions);
info = view->priv->dnd_info;
if (info->source_targets)
gtk_target_list_unref (info->source_targets);
info->start_button_mask = start_button_mask;
info->source_targets = gtk_target_list_new (targets, n_targets);
info->source_actions = actions;
info->source_enabled = TRUE;
}
GtkTargetList*
moo_icon_view_get_source_targets (MooIconView *view)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
return view->priv->dnd_info->source_targets;
}
void
moo_icon_view_disable_drag_source (MooIconView *view)
{
DndInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
info = view->priv->dnd_info;
if (info->source_enabled)
{
gtk_drag_source_unset (GTK_WIDGET (view));
gtk_target_list_unref (info->source_targets);
info->source_targets = NULL;
}
}
static gboolean
moo_icon_view_maybe_drag (MooIconView *view,
GdkEventMotion *event)
{
DndInfo *info;
GtkTreePath *path = NULL;
gboolean result = FALSE;
int button;
GdkDragContext *context;
// GdkPixmap *pixmap;
info = view->priv->dnd_info;
if (!view->priv->button_pressed)
goto out;
if (!info->source_enabled)
goto out;
if (!gtk_drag_check_threshold (GTK_WIDGET (view),
view->priv->button_press_x,
view->priv->button_press_y,
event->x, event->y))
{
goto out;
}
button = view->priv->button_pressed;
view->priv->button_pressed = 0;
moo_icon_view_get_path_at_pos (view,
view->priv->button_press_x,
view->priv->button_press_y,
&path, NULL, NULL, NULL);
if (!path)
goto out;
if (!(GDK_BUTTON1_MASK << (button - 1) & info->start_button_mask))
goto out;
/* drag it! */
result = TRUE;
context = gtk_drag_begin (GTK_WIDGET (view),
info->source_targets,
info->source_actions,
button,
(GdkEvent*) event);
// pixmap = moo_icon_view_create_row_drag_icon (view, path);
// gtk_drag_set_icon_pixmap (context,
// gdk_drawable_get_colormap (pixmap),
// pixmap,
// NULL,
// /* the + 1 is for the black border in the icon ? */
// view->priv->button_press_x + 1,
// 1);
out:
if (path)
gtk_tree_path_free (path);
return result;
}
static void
moo_icon_view_drag_begin (G_GNUC_UNUSED GtkWidget *widget,
G_GNUC_UNUSED GdkDragContext *context)
{
}
static void
moo_icon_view_drag_end (GtkWidget *widget,
G_GNUC_UNUSED GdkDragContext *context)
{
MooIconView *view = MOO_ICON_VIEW (widget);
view->priv->button_pressed = 0;
}
void
moo_icon_view_enable_drag_dest (MooIconView *view,
GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions)
{
DndInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
gtk_drag_dest_set (GTK_WIDGET (view), 0, targets, n_targets, actions);
info = view->priv->dnd_info;
if (info->dest_targets)
gtk_target_list_unref (info->dest_targets);
info->dest_targets = gtk_target_list_new (targets, n_targets);
info->dest_actions = actions;
info->dest_enabled = TRUE;
}
void
moo_icon_view_set_dest_targets (MooIconView *view,
GtkTargetList *targets)
{
DndInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
info = view->priv->dnd_info;
g_return_if_fail (info->dest_enabled);
if (info->dest_targets)
gtk_target_list_unref (info->dest_targets);
gtk_target_list_ref (targets);
info->dest_targets = targets;
gtk_drag_dest_set_target_list (GTK_WIDGET (view), targets);
}
void
moo_icon_view_disable_drag_dest (MooIconView *view)
{
DndInfo *info;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
info = view->priv->dnd_info;
if (info->dest_enabled)
{
gtk_drag_dest_unset (GTK_WIDGET (view));
gtk_target_list_unref (info->dest_targets);
info->dest_targets = NULL;
}
}
static void
moo_icon_view_drag_leave (G_GNUC_UNUSED GtkWidget *widget,
G_GNUC_UNUSED GdkDragContext *context,
G_GNUC_UNUSED guint time)
{
DndInfo *info;
MooIconView *view = MOO_ICON_VIEW (widget);
info = view->priv->dnd_info;
if (info->drag_motion_context)
g_object_unref (info->drag_motion_context);
info->drag_motion_context = NULL;
if (!info->drag_dest_inside)
g_warning ("drag_leave: oops\n");
info->drag_dest_inside = FALSE;
drag_scroll_stop (view);
}
static void
drag_scroll_stop (MooIconView *view)
{
DndInfo *info = view->priv->dnd_info;
if (info->scroll_timeout)
{
g_source_remove (info->scroll_timeout);
info->scroll_timeout = 0;
}
}
#define DRAG_SCROLL_MARGIN 0.1
#define DRAG_SCROLL_TIMEOUT 100
static gboolean
drag_scroll_timeout (MooIconView *view)
{
GtkWidget *widget = GTK_WIDGET (view);
GtkAllocation *alc = &widget->allocation;
GtkWidget *toplevel;
int x, y, new_offset;
int delta, dist;
double ratio, margin;
GdkModifierType mask;
GdkEvent *event;
DndInfo *info = view->priv->dnd_info;
gdk_window_get_pointer (widget->window, &x, &y, &mask);
if (x < 0 || x >= alc->width || y < 0 || y >= alc->height)
goto out;
if (x < widget->allocation.width * DRAG_SCROLL_MARGIN)
{
dist = x;
delta = -1;
}
else if (x > widget->allocation.width * (1 - DRAG_SCROLL_MARGIN))
{
dist = widget->allocation.width - 1 - x;
delta = 1;
}
else
{
goto out;
}
margin = widget->allocation.width * DRAG_SCROLL_MARGIN;
margin = MAX (margin, 2);
dist = CLAMP (dist, 1, margin - 1);
ratio = (margin - dist) / margin;
delta *= 15 * (1 + 3 * ratio);
new_offset = clamp_offset (view, view->priv->xoffset + delta);
if (new_offset == view->priv->xoffset)
goto out;
moo_icon_view_scroll_to (view, new_offset);
toplevel = gtk_widget_get_toplevel (widget);
if (!GTK_WIDGET_TOPLEVEL (toplevel))
{
g_critical ("%s: oops", G_STRLOC);
goto out;
}
event = gdk_event_new (GDK_DRAG_MOTION);
event->dnd.window = g_object_ref (toplevel->window);
event->dnd.send_event = TRUE;
event->dnd.context = g_object_ref (info->drag_motion_context);
gdk_window_get_position (toplevel->window, &x, &y);
event->dnd.x_root = x;
event->dnd.y_root = y;
gdk_window_get_pointer (toplevel->window, &x, &y, &mask);
event->dnd.x_root += x;
event->dnd.y_root += y;
gtk_main_do_event (event);
gdk_event_free (event);
return TRUE;
out:
drag_scroll_stop (view);
return FALSE;
}
static void
drag_scroll_check (MooIconView *view,
int x,
int y)
{
GtkAllocation *alc = &GTK_WIDGET(view)->allocation;
if (x >= 0 && x < alc->width && y >= 0 && y < alc->height &&
(x < alc->width * DRAG_SCROLL_MARGIN ||
x > alc->width * (1 - DRAG_SCROLL_MARGIN)))
{
DndInfo *info = view->priv->dnd_info;
if (!info->scroll_timeout)
info->scroll_timeout =
g_timeout_add (DRAG_SCROLL_TIMEOUT,
(GSourceFunc) drag_scroll_timeout,
view);
}
else
{
drag_scroll_stop (view);
}
}
static gboolean
moo_icon_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
int x,
int y,
G_GNUC_UNUSED guint time)
{
DndInfo *info;
GdkAtom target;
MooIconView *view = MOO_ICON_VIEW (widget);
info = view->priv->dnd_info;
target = gtk_drag_dest_find_target (widget, context, info->dest_targets);
if (target == GDK_NONE)
{
if (info->drag_motion_context)
{
g_critical ("%s: oops", G_STRLOC);
g_object_unref (info->drag_motion_context);
info->drag_motion_context = NULL;
}
drag_scroll_stop (view);
return FALSE;
}
if (info->drag_motion_context != context)
{
if (info->drag_motion_context)
{
g_critical ("%s: oops", G_STRLOC);
g_object_unref (info->drag_motion_context);
}
info->drag_motion_context = g_object_ref (context);
}
if (!info->drag_dest_inside)
info->drag_dest_inside = TRUE;
else
drag_scroll_check (view, x, y);
return FALSE;
}
void
moo_icon_view_set_drag_dest_row (MooIconView *view,
GtkTreePath *path)
{
GtkTreeRowReference *ref = NULL;
g_return_if_fail (MOO_IS_ICON_VIEW (view));
if (path)
ref = gtk_tree_row_reference_new (view->priv->model, path);
if (view->priv->drop_dest)
{
GtkTreePath *old_path;
old_path = gtk_tree_row_reference_get_path (view->priv->drop_dest);
if (old_path)
{
invalidate_path_rectangle (view, old_path);
gtk_tree_path_free (old_path);
}
gtk_tree_row_reference_free (view->priv->drop_dest);
view->priv->drop_dest = NULL;
}
if (ref)
{
view->priv->drop_dest = ref;
invalidate_path_rectangle (view, path);
}
}
GtkTreePath *
moo_icon_view_get_drag_dest_row (MooIconView *view)
{
g_return_val_if_fail (MOO_IS_ICON_VIEW (view), NULL);
if (view->priv->drop_dest)
return gtk_tree_row_reference_get_path (view->priv->drop_dest);
else
return NULL;
}
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