/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Author :
* Damon Chaplin <damon@gtk.org>
*
* Copyright 1999, Helix Code, Inc.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
/*
* EIconBarBgItem - A GnomeCanvasItem which covers the entire EIconBar.
* It paints the rectangles around items when the mouse moves over them, and
* the lines between items when dragging.
*/
#include "e-icon-bar-bg-item.h"
#include "e-icon-bar.h"
/* This is the size of the border around the icons, for the shadow. */
#define E_ICON_BAR_LARGE_ICON_SHADOW_BORDER 2
#define E_ICON_BAR_SMALL_ICON_SHADOW_BORDER 2
/* These are for the horzontal bar when dragging. */
#define E_ICON_BAR_BG_ITEM_BAR_HEIGHT 1
#define E_ICON_BAR_BG_ITEM_BAR_OFFSET 2
#define E_ICON_BAR_BG_ITEM_LARGE_ARROW_HEIGHT 8
#define E_ICON_BAR_BG_ITEM_SMALL_ARROW_HEIGHT 4
static void e_icon_bar_bg_item_class_init (EIconBarBgItemClass *class);
static void e_icon_bar_bg_item_init (EIconBarBgItem *ibitem);
static void e_icon_bar_bg_item_set_arg (GtkObject *o, GtkArg *arg,
guint arg_id);
static void e_icon_bar_bg_item_update (GnomeCanvasItem *item,
double *affine,
ArtSVP *clip_path, int flags);
static void e_icon_bar_bg_item_draw (GnomeCanvasItem *item,
GdkDrawable *drawable,
int x, int y,
int width, int height);
static double e_icon_bar_bg_item_point (GnomeCanvasItem *item,
double x, double y,
int cx, int cy,
GnomeCanvasItem **actual_item);
static gint e_icon_bar_bg_item_event (GnomeCanvasItem *item,
GdkEvent *event);
static gint e_icon_bar_bg_item_button_press (EIconBarBgItem *ibitem,
GdkEvent *event);
static gint e_icon_bar_bg_item_button_release (EIconBarBgItem *ibitem,
GdkEvent *event);
static gint e_icon_bar_bg_item_motion_notify (EIconBarBgItem *ibitem,
GdkEvent *event);
static GnomeCanvasItemClass *parent_class;
/* The arguments we take */
enum {
ARG_0,
ARG_ICON_BAR
};
GtkType
e_icon_bar_bg_item_get_type (void)
{
static GtkType e_icon_bar_bg_item_type = 0;
if (!e_icon_bar_bg_item_type) {
GtkTypeInfo e_icon_bar_bg_item_info = {
"EIconBarBgItem",
sizeof (EIconBarBgItem),
sizeof (EIconBarBgItemClass),
(GtkClassInitFunc) e_icon_bar_bg_item_class_init,
(GtkObjectInitFunc) e_icon_bar_bg_item_init,
NULL, /* reserved_1 */
NULL, /* reserved_2 */
(GtkClassInitFunc) NULL
};
e_icon_bar_bg_item_type = gtk_type_unique (gnome_canvas_item_get_type (), &e_icon_bar_bg_item_info);
}
return e_icon_bar_bg_item_type;
}
static void
e_icon_bar_bg_item_class_init (EIconBarBgItemClass *class)
{
GtkObjectClass *object_class;
GnomeCanvasItemClass *item_class;
parent_class = gtk_type_class (gnome_canvas_item_get_type());
object_class = (GtkObjectClass *) class;
item_class = (GnomeCanvasItemClass *) class;
gtk_object_add_arg_type ("EIconBarBgItem::icon_bar",
GTK_TYPE_POINTER, GTK_ARG_WRITABLE,
ARG_ICON_BAR);
object_class->set_arg = e_icon_bar_bg_item_set_arg;
/* GnomeCanvasItem method overrides */
item_class->update = e_icon_bar_bg_item_update;
item_class->draw = e_icon_bar_bg_item_draw;
item_class->point = e_icon_bar_bg_item_point;
item_class->event = e_icon_bar_bg_item_event;
}
static void
e_icon_bar_bg_item_init (EIconBarBgItem *ibitem)
{
GnomeCanvasItem *item = GNOME_CANVAS_ITEM (ibitem);
ibitem->icon_bar = NULL;
item->x1 = 0;
item->y1 = 0;
item->x2 = 0;
item->y2 = 0;
}
static void
e_icon_bar_bg_item_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
GnomeCanvasItem *item;
EIconBarBgItem *ibitem;
item = GNOME_CANVAS_ITEM (o);
ibitem = E_ICON_BAR_BG_ITEM (o);
switch (arg_id){
case ARG_ICON_BAR:
ibitem->icon_bar = GTK_VALUE_POINTER (*arg);
break;
}
}
static void
e_icon_bar_bg_item_update (GnomeCanvasItem *item,
double *affine,
ArtSVP *clip_path,
int flags)
{
if (GNOME_CANVAS_ITEM_CLASS (parent_class)->update)
(* GNOME_CANVAS_ITEM_CLASS (parent_class)->update) (item, affine, clip_path, flags);
/* The grid covers the entire canvas area. */
item->x1 = 0;
item->y1 = 0;
item->x2 = INT_MAX;
item->y2 = INT_MAX;
}
/*
* DRAWING ROUTINES - functions to paint the canvas item.
*/
static void
e_icon_bar_bg_item_draw (GnomeCanvasItem *canvas_item, GdkDrawable *drawable,
int x, int y, int width, int height)
{
EIconBar *icon_bar;
EIconBarItem *item;
EIconBarBgItem *ibitem;
GtkStyle *style;
GdkGC *gc;
GtkShadowType shadow;
gint item_num, border, bar_x, bar_y, bar_w, i, arrow_height;
ibitem = E_ICON_BAR_BG_ITEM (canvas_item);
icon_bar = ibitem->icon_bar;
g_return_if_fail (icon_bar != NULL);
style = GTK_WIDGET (icon_bar)->style;
/* Draw the highlight around the current highlight item. */
item_num = -1;
if (icon_bar->editing_item_num == -1) {
if (icon_bar->pressed_item_num != -1) {
item_num = icon_bar->pressed_item_num;
if (icon_bar->pressed_item_num == icon_bar->mouse_over_item_num)
shadow = GTK_SHADOW_IN;
else
shadow = GTK_SHADOW_OUT;
} else if (icon_bar->mouse_over_item_num != -1) {
item_num = icon_bar->mouse_over_item_num;
shadow = GTK_SHADOW_OUT;
}
}
if (item_num != -1) {
item = &g_array_index (icon_bar->items, EIconBarItem,
item_num);
if (icon_bar->view_type == E_ICON_BAR_LARGE_ICONS)
border = E_ICON_BAR_LARGE_ICON_SHADOW_BORDER;
else
border = E_ICON_BAR_SMALL_ICON_SHADOW_BORDER;
gtk_draw_shadow (style, drawable, GTK_STATE_NORMAL, shadow,
icon_bar->icon_x - border - x,
item->icon_y - border - y,
icon_bar->icon_w + border * 2 - 1,
icon_bar->icon_h + border * 2 - 1);
}
/* Draw the bar between items when dragging, if needed. */
if (icon_bar->in_drag && icon_bar->dragging_before_item_num != -1) {
if (icon_bar->dragging_before_item_num < icon_bar->items->len) {
item = &g_array_index (icon_bar->items, EIconBarItem,
icon_bar->dragging_before_item_num);
bar_y = 0;
} else {
/* We need to draw the bar after the last item. */
item = &g_array_index (icon_bar->items, EIconBarItem,
icon_bar->items->len - 1);
bar_y = item->item_height + icon_bar->spacing;
}
if (icon_bar->view_type == E_ICON_BAR_LARGE_ICONS) {
bar_y += item->icon_y;
} else {
bar_y += MIN (item->icon_y, item->text_y);
}
bar_y -= y + icon_bar->spacing / 2;
bar_x = E_ICON_BAR_BG_ITEM_BAR_OFFSET - x;
bar_w = GTK_WIDGET (icon_bar)->allocation.width - 2 * E_ICON_BAR_BG_ITEM_BAR_OFFSET - 1;
gc = GTK_WIDGET (icon_bar)->style->fg_gc[GTK_STATE_NORMAL];
/* Draw the horizontal bar. */
gdk_draw_rectangle (drawable, gc, TRUE,
bar_x, bar_y,
bar_w, E_ICON_BAR_BG_ITEM_BAR_HEIGHT);
if (icon_bar->view_type == E_ICON_BAR_LARGE_ICONS)
arrow_height = E_ICON_BAR_BG_ITEM_LARGE_ARROW_HEIGHT / 2;
else
arrow_height = E_ICON_BAR_BG_ITEM_SMALL_ARROW_HEIGHT / 2;
/* Draw the arrows at the end of the lines. We use
gdk_draw_line() to draw a series of vertical lines, since
gdk_draw_polygon() produces odd results. */
i = 0;
while (arrow_height > 0) {
gdk_draw_line (drawable, gc,
bar_x + i,
bar_y - arrow_height,
bar_x + i,
bar_y + arrow_height);
gdk_draw_line (drawable, gc,
bar_x + bar_w - i - 1,
bar_y - arrow_height,
bar_x + bar_w - i - 1,
bar_y + arrow_height);
arrow_height--;
i++;
}
}
}
/* This is supposed to return the nearest item the the point and the distance.
Since we are the only item we just return ourself and 0 for the distance.
This is needed so that we get button/motion events. */
static double
e_icon_bar_bg_item_point (GnomeCanvasItem *item, double x, double y,
int cx, int cy,
GnomeCanvasItem **actual_item)
{
*actual_item = item;
return 0.0;
}
static gint
e_icon_bar_bg_item_event (GnomeCanvasItem *item, GdkEvent *event)
{
EIconBarBgItem *ibitem;
ibitem = E_ICON_BAR_BG_ITEM (item);
switch (event->type) {
case GDK_BUTTON_PRESS:
return e_icon_bar_bg_item_button_press (ibitem, event);
case GDK_BUTTON_RELEASE:
return e_icon_bar_bg_item_button_release (ibitem, event);
case GDK_MOTION_NOTIFY:
return e_icon_bar_bg_item_motion_notify (ibitem, event);
default:
break;
}
return FALSE;
}
static gint
e_icon_bar_bg_item_button_press (EIconBarBgItem *ibitem,
GdkEvent *event)
{
gint item_num;
item_num = e_icon_bar_find_item_at_position (ibitem->icon_bar,
event->button.x,
event->button.y,
NULL);
e_icon_bar_item_pressed (ibitem->icon_bar, item_num, event);
return TRUE;
}
static gint
e_icon_bar_bg_item_button_release (EIconBarBgItem *ibitem,
GdkEvent *event)
{
gint item_num;
item_num = e_icon_bar_find_item_at_position (ibitem->icon_bar,
event->button.x,
event->button.y,
NULL);
e_icon_bar_item_released (ibitem->icon_bar, item_num, event);
return TRUE;
}
static gint
e_icon_bar_bg_item_motion_notify (EIconBarBgItem *ibitem,
GdkEvent *event)
{
gint item_num;
item_num = e_icon_bar_find_item_at_position (ibitem->icon_bar,
event->motion.x,
event->motion.y,
NULL);
e_icon_bar_item_motion (ibitem->icon_bar, item_num, event);
return TRUE;
}
