mirror of https://github.com/MidnightCommander/mc
496 lines
12 KiB
C
496 lines
12 KiB
C
/* File list widget for the Midnight Commander
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*
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* Copyright (C) 1999 The Free Software Foundation
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*
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* Author: Federico Mena <federico@nuclecu.unam.mx>
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*/
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#include <config.h>
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#include "gtkflist.h"
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enum {
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ROW_POPUP_MENU,
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EMPTY_POPUP_MENU,
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OPEN_ROW,
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START_DRAG,
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LAST_SIGNAL
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};
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static void gtk_flist_class_init (GtkFListClass *class);
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static void gtk_flist_init (GtkFList *flist);
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static gint gtk_flist_button_press (GtkWidget *widget, GdkEventButton *event);
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static gint gtk_flist_button_release (GtkWidget *widget, GdkEventButton *event);
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static gint gtk_flist_motion (GtkWidget *widget, GdkEventMotion *event);
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static gint gtk_flist_key (GtkWidget *widget, GdkEventKey *event);
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static void gtk_flist_drag_begin (GtkWidget *widget, GdkDragContext *context);
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static void gtk_flist_drag_end (GtkWidget *widget, GdkDragContext *context);
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static void gtk_flist_drag_data_get (GtkWidget *widget, GdkDragContext *context,
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GtkSelectionData *data, guint info, guint time);
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static void gtk_flist_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time);
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static gboolean gtk_flist_drag_motion (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, guint time);
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static gboolean gtk_flist_drag_drop (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, guint time);
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static void gtk_flist_drag_data_received (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, GtkSelectionData *data,
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guint info, guint time);
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static void gtk_flist_clear (GtkCList *clist);
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static GtkCListClass *parent_class;
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static guint flist_signals[LAST_SIGNAL];
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/**
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* gtk_flist_get_type:
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* @void:
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*
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* Creates the GtkFList class and its type information
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*
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* Return value: The type ID for GtkFListClass
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**/
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GtkType
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gtk_flist_get_type (void)
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{
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static GtkType flist_type = 0;
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if (!flist_type) {
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GtkTypeInfo flist_info = {
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"GtkFList",
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sizeof (GtkFList),
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sizeof (GtkFListClass),
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(GtkClassInitFunc) gtk_flist_class_init,
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(GtkObjectInitFunc) gtk_flist_init,
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NULL, /* reserved_1 */
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NULL, /* reserved_2 */
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(GtkClassInitFunc) NULL
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};
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flist_type = gtk_type_unique (gtk_clist_get_type (), &flist_info);
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}
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return flist_type;
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}
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/* Standard class initialization function */
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static void
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gtk_flist_class_init (GtkFListClass *class)
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{
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GtkObjectClass *object_class;
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GtkWidgetClass *widget_class;
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GtkCListClass *clist_class;
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object_class = (GtkObjectClass *) class;
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widget_class = (GtkWidgetClass *) class;
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clist_class = (GtkCListClass *) class;
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parent_class = gtk_type_class (gtk_clist_get_type ());
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flist_signals[ROW_POPUP_MENU] =
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gtk_signal_new ("row_popup_menu",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GtkFListClass, row_popup_menu),
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gtk_marshal_NONE__POINTER,
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GTK_TYPE_NONE, 1,
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GTK_TYPE_GDK_EVENT);
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flist_signals[EMPTY_POPUP_MENU] =
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gtk_signal_new ("empty_popup_menu",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GtkFListClass, empty_popup_menu),
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gtk_marshal_NONE__POINTER,
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GTK_TYPE_NONE, 1,
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GTK_TYPE_GDK_EVENT);
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flist_signals[OPEN_ROW] =
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gtk_signal_new ("open_row",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GtkFListClass, open_row),
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gtk_marshal_NONE__NONE,
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GTK_TYPE_NONE, 0);
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flist_signals[START_DRAG] =
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gtk_signal_new ("start_drag",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (GtkFListClass, start_drag),
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gtk_marshal_NONE__INT_POINTER,
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GTK_TYPE_NONE, 2,
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GTK_TYPE_INT,
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GTK_TYPE_GDK_EVENT);
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gtk_object_class_add_signals (object_class, flist_signals, LAST_SIGNAL);
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clist_class->clear = gtk_flist_clear;
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widget_class->button_press_event = gtk_flist_button_press;
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widget_class->button_release_event = gtk_flist_button_release;
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widget_class->motion_notify_event = gtk_flist_motion;
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widget_class->key_press_event = gtk_flist_key;
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widget_class->key_release_event = gtk_flist_key;
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widget_class->drag_begin = gtk_flist_drag_begin;
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widget_class->drag_end = gtk_flist_drag_end;
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widget_class->drag_data_get = gtk_flist_drag_data_get;
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widget_class->drag_leave = gtk_flist_drag_leave;
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widget_class->drag_motion = gtk_flist_drag_motion;
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widget_class->drag_drop = gtk_flist_drag_drop;
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widget_class->drag_data_received = gtk_flist_drag_data_received;
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}
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/* Standard object initialization function */
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static void
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gtk_flist_init (GtkFList *flist)
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{
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flist->anchor_row = -1;
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/* GtkCList does not specify pointer motion by default */
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gtk_widget_add_events (GTK_WIDGET (flist), GDK_POINTER_MOTION_MASK);
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}
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/* Selects the rows between the anchor to the specified row, inclusive. */
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static void
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select_range (GtkFList *flist, int row)
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{
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int min, max;
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int i;
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if (flist->anchor_row == -1)
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flist->anchor_row = row;
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if (row < flist->anchor_row) {
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min = row;
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max = flist->anchor_row;
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} else {
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min = flist->anchor_row;
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max = row;
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}
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for (i = min; i <= max; i++)
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gtk_clist_select_row (GTK_CLIST (flist), i, 0);
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}
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/* Handles row selection according to the specified modifier state */
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static void
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select_row (GtkFList *flist, int row, guint state)
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{
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int range, additive;
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range = (state & GDK_SHIFT_MASK) != 0;
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additive = (state & GDK_CONTROL_MASK) != 0;
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if (!additive)
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gtk_clist_unselect_all (GTK_CLIST (flist));
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if (!range) {
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if (additive) {
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if (flist->panel->dir.list[row].f.marked)
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gtk_clist_unselect_row (GTK_CLIST (flist), row, 0);
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else
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gtk_clist_select_row (GTK_CLIST (flist), row, 0);
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} else if (!flist->panel->dir.list[row].f.marked)
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gtk_clist_select_row (GTK_CLIST (flist), row, 0);
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flist->anchor_row = row;
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} else
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select_range (flist, row);
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}
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/* Our handler for button_press events. We override all of GtkCList's broken
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* behavior.
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*/
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static gint
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gtk_flist_button_press (GtkWidget *widget, GdkEventButton *event)
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{
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GtkFList *flist;
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GtkCList *clist;
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int on_row;
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gint row, col;
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int retval;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_FLIST (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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flist = GTK_FLIST (widget);
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clist = GTK_CLIST (widget);
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retval = FALSE;
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if (event->window != clist->clist_window)
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return (* GTK_WIDGET_CLASS (parent_class)->button_press_event) (widget, event);
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on_row = gtk_clist_get_selection_info (clist, event->x, event->y, &row, &col);
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switch (event->type) {
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case GDK_BUTTON_PRESS:
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if (event->button == 1 || event->button == 2) {
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if (on_row) {
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file_entry *fe;
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fe = &flist->panel->dir.list[row];
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/* Save the mouse info for DnD */
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flist->dnd_press_button = event->button;
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flist->dnd_press_x = event->x;
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flist->dnd_press_y = event->y;
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/* Handle selection */
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if ((fe->f.marked
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&& !(event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)))
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|| ((event->state & GDK_CONTROL_MASK)
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&& !(event->state & GDK_SHIFT_MASK))) {
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flist->dnd_select_pending = TRUE;
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flist->dnd_select_pending_state = event->state;
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flist->dnd_select_pending_row = row;
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} else
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select_row (flist, row, event->state);
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} else
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gtk_clist_unselect_all (clist);
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retval = TRUE;
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} else if (event->button == 3) {
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if (on_row) {
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file_entry *fe;
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fe = &flist->panel->dir.list[row];
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if (!fe->f.marked)
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select_row (flist, row, event->state);
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gtk_signal_emit (GTK_OBJECT (flist),
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flist_signals[ROW_POPUP_MENU],
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event);
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} else
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gtk_signal_emit (GTK_OBJECT (flist),
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flist_signals[EMPTY_POPUP_MENU],
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event);
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retval = TRUE;
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}
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break;
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case GDK_2BUTTON_PRESS:
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if (event->button != 1)
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break;
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flist->dnd_select_pending = FALSE;
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flist->dnd_select_pending_state = 0;
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if (on_row)
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gtk_signal_emit (GTK_OBJECT (flist), flist_signals[OPEN_ROW]);
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retval = TRUE;
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break;
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default:
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break;
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}
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return retval;
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}
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/* Our handler for button_release events. We override all of GtkCList's broken
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* behavior.
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*/
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static gint
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gtk_flist_button_release (GtkWidget *widget, GdkEventButton *event)
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{
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GtkFList *flist;
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GtkCList *clist;
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int on_row;
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gint row, col;
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int retval;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_FLIST (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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flist = GTK_FLIST (widget);
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clist = GTK_CLIST (widget);
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retval = FALSE;
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if (event->window != clist->clist_window)
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return (* GTK_WIDGET_CLASS (parent_class)->button_release_event) (widget, event);
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on_row = gtk_clist_get_selection_info (clist, event->x, event->y, &row, &col);
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if (!(event->button == 1 || event->button == 2))
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return FALSE;
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flist->dnd_press_button = 0;
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flist->dnd_press_x = 0;
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flist->dnd_press_y = 0;
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if (on_row) {
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if (flist->dnd_select_pending) {
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select_row (flist, row, flist->dnd_select_pending_state);
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flist->dnd_select_pending = FALSE;
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flist->dnd_select_pending_state = 0;
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}
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retval = TRUE;
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}
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return retval;
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}
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/* Our handler for motion_notify events. We override all of GtkCList's broken
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* behavior.
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*/
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static gint
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gtk_flist_motion (GtkWidget *widget, GdkEventMotion *event)
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{
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GtkFList *flist;
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GtkCList *clist;
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g_return_val_if_fail (widget != NULL, FALSE);
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g_return_val_if_fail (GTK_IS_FLIST (widget), FALSE);
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g_return_val_if_fail (event != NULL, FALSE);
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flist = GTK_FLIST (widget);
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clist = GTK_CLIST (widget);
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if (event->window != clist->clist_window)
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return (* GTK_WIDGET_CLASS (parent_class)->motion_notify_event) (widget, event);
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if (!((flist->dnd_press_button == 1 && (event->state & GDK_BUTTON1_MASK))
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|| (flist->dnd_press_button == 2 && (event->state & GDK_BUTTON2_MASK))))
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return FALSE;
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/* This is the same threshold value that is used in gtkdnd.c */
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if (MAX (abs (flist->dnd_press_x - event->x),
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abs (flist->dnd_press_y - event->y)) <= 3)
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return FALSE;
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/* Handle any pending selections */
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if (flist->dnd_select_pending) {
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if (!flist->panel->dir.list[flist->dnd_select_pending_row].f.marked)
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select_row (flist,
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flist->dnd_select_pending_row,
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flist->dnd_select_pending_state);
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flist->dnd_select_pending = FALSE;
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flist->dnd_select_pending_state = 0;
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}
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gtk_signal_emit (GTK_OBJECT (flist),
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flist_signals[START_DRAG],
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flist->dnd_press_button,
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event);
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return TRUE;
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}
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/* Our handler for key_press and key_release events. We do nothing, and we do
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* this to avoid GtkCList's broken behavior.
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*/
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static gint
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gtk_flist_key (GtkWidget *widget, GdkEventKey *event)
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{
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return FALSE;
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}
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/* We override the drag_begin signal to do nothing */
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static void
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gtk_flist_drag_begin (GtkWidget *widget, GdkDragContext *context)
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{
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/* nothing */
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}
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/* We override the drag_end signal to do nothing */
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static void
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gtk_flist_drag_end (GtkWidget *widget, GdkDragContext *context)
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{
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/* nothing */
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}
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/* We override the drag_data_get signal to do nothing */
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static void
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gtk_flist_drag_data_get (GtkWidget *widget, GdkDragContext *context,
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GtkSelectionData *data, guint info, guint time)
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{
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/* nothing */
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}
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/* We override the drag_leave signal to do nothing */
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static void
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gtk_flist_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time)
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{
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/* nothing */
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}
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/* We override the drag_motion signal to do nothing */
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static gboolean
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gtk_flist_drag_motion (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, guint time)
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{
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return FALSE;
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}
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/* We override the drag_drop signal to do nothing */
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static gboolean
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gtk_flist_drag_drop (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, guint time)
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{
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return FALSE;
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}
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/* We override the drag_data_received signal to do nothing */
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static void
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gtk_flist_drag_data_received (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, GtkSelectionData *data,
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guint info, guint time)
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{
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/* nothing */
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}
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/* Our handler for the clear signal of the clist. We have to reset the anchor
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* to null.
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*/
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static void
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gtk_flist_clear (GtkCList *clist)
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{
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GtkFList *flist;
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g_return_if_fail (clist != NULL);
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g_return_if_fail (GTK_IS_FLIST (clist));
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flist = GTK_FLIST (clist);
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flist->anchor_row = -1;
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if (parent_class->clear)
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(* parent_class->clear) (clist);
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}
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/**
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* gtk_flist_new_with_titles:
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* @panel: A panel
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* @columns: The number of columns in the list
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* @titles: The titles for the columns
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*
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* Creates a new file list associated to a panel.
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*
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* Return value: The newly-created file list.
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**/
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GtkWidget *
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gtk_flist_new_with_titles (WPanel *panel, int columns, char **titles)
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{
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GtkFList *flist;
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g_return_val_if_fail (panel != NULL, NULL);
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flist = gtk_type_new (gtk_flist_get_type ());
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gtk_clist_construct (GTK_CLIST (flist), columns, titles);
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flist->panel = panel;
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return GTK_WIDGET (flist);
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}
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