mirror of https://github.com/GNOME/gimp.git
871 lines
28 KiB
C
871 lines
28 KiB
C
/* LIBGIMP - The GIMP Library
|
|
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
|
|
*
|
|
* gimpscrolledpreview.c
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <gtk/gtk.h>
|
|
|
|
#include "libgimpmath/gimpmath.h"
|
|
|
|
#include "gimpwidgets.h"
|
|
|
|
#include "gimpscrolledpreview.h"
|
|
|
|
#include "libgimp/libgimp-intl.h"
|
|
|
|
|
|
#define POPUP_SIZE 100
|
|
#define PEN_WIDTH 3
|
|
|
|
|
|
typedef struct
|
|
{
|
|
GtkPolicyType hscr_policy;
|
|
GtkPolicyType vscr_policy;
|
|
gint drag_x;
|
|
gint drag_y;
|
|
gint drag_xoff;
|
|
gint drag_yoff;
|
|
gboolean in_drag;
|
|
gint frozen;
|
|
} GimpScrolledPreviewPrivate;
|
|
|
|
#define GIMP_SCROLLED_PREVIEW_GET_PRIVATE(obj) \
|
|
((GimpScrolledPreviewPrivate *) ((GimpScrolledPreview *) (obj))->priv)
|
|
|
|
|
|
static void gimp_scrolled_preview_class_init (GimpScrolledPreviewClass *klass);
|
|
static void gimp_scrolled_preview_init (GimpScrolledPreview *preview);
|
|
static void gimp_scrolled_preview_dispose (GObject *object);
|
|
|
|
static void gimp_scrolled_preview_area_realize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview);
|
|
static void gimp_scrolled_preview_area_unrealize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview);
|
|
static void gimp_scrolled_preview_area_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation,
|
|
GimpScrolledPreview *preview);
|
|
static gboolean gimp_scrolled_preview_area_event (GtkWidget *area,
|
|
GdkEvent *event,
|
|
GimpScrolledPreview *preview);
|
|
|
|
static void gimp_scrolled_preview_h_scroll (GtkAdjustment *hadj,
|
|
GimpPreview *preview);
|
|
static void gimp_scrolled_preview_v_scroll (GtkAdjustment *vadj,
|
|
GimpPreview *preview);
|
|
|
|
static gboolean gimp_scrolled_preview_nav_button_press (GtkWidget *widget,
|
|
GdkEventButton *event,
|
|
GimpScrolledPreview *preview);
|
|
|
|
static void gimp_scrolled_preview_nav_popup_realize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview);
|
|
static void gimp_scrolled_preview_nav_popup_unrealize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview);
|
|
static gboolean gimp_scrolled_preview_nav_popup_event (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
GimpScrolledPreview *preview);
|
|
static gboolean gimp_scrolled_preview_nav_popup_expose (GtkWidget *widget,
|
|
GdkEventExpose *event,
|
|
GimpScrolledPreview *preview);
|
|
static void gimp_scrolled_preview_set_cursor (GimpPreview *preview);
|
|
|
|
|
|
static GimpPreviewClass *parent_class = NULL;
|
|
|
|
|
|
GType
|
|
gimp_scrolled_preview_get_type (void)
|
|
{
|
|
static GType preview_type = 0;
|
|
|
|
if (! preview_type)
|
|
{
|
|
const GTypeInfo preview_info =
|
|
{
|
|
sizeof (GimpScrolledPreviewClass),
|
|
(GBaseInitFunc) NULL,
|
|
(GBaseFinalizeFunc) NULL,
|
|
(GClassInitFunc) gimp_scrolled_preview_class_init,
|
|
NULL, /* class_finalize */
|
|
NULL, /* class_data */
|
|
sizeof (GimpScrolledPreview),
|
|
0, /* n_preallocs */
|
|
(GInstanceInitFunc) gimp_scrolled_preview_init,
|
|
};
|
|
|
|
preview_type = g_type_register_static (GIMP_TYPE_PREVIEW,
|
|
"GimpScrolledPreview",
|
|
&preview_info,
|
|
G_TYPE_FLAG_ABSTRACT);
|
|
}
|
|
|
|
return preview_type;
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_class_init (GimpScrolledPreviewClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GimpPreviewClass *preview_class = GIMP_PREVIEW_CLASS (klass);
|
|
|
|
parent_class = g_type_class_peek_parent (klass);
|
|
|
|
object_class->dispose = gimp_scrolled_preview_dispose;
|
|
|
|
preview_class->set_cursor = gimp_scrolled_preview_set_cursor;
|
|
|
|
g_type_class_add_private (object_class, sizeof (GimpScrolledPreviewPrivate));
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_init (GimpScrolledPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv;
|
|
GtkWidget *image;
|
|
GtkObject *adj;
|
|
|
|
preview->priv = G_TYPE_INSTANCE_GET_PRIVATE (preview,
|
|
GIMP_TYPE_SCROLLED_PREVIEW,
|
|
GimpScrolledPreviewPrivate);
|
|
|
|
priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
preview->nav_popup = NULL;
|
|
|
|
priv->hscr_policy = GTK_POLICY_AUTOMATIC;
|
|
priv->vscr_policy = GTK_POLICY_AUTOMATIC;
|
|
|
|
priv->in_drag = FALSE;
|
|
priv->frozen = 0;
|
|
|
|
/* scrollbars */
|
|
adj = gtk_adjustment_new (0, 0, GIMP_PREVIEW (preview)->width - 1, 1.0,
|
|
GIMP_PREVIEW (preview)->width,
|
|
GIMP_PREVIEW (preview)->width);
|
|
|
|
g_signal_connect (adj, "value-changed",
|
|
G_CALLBACK (gimp_scrolled_preview_h_scroll),
|
|
preview);
|
|
|
|
preview->hscr = gtk_hscrollbar_new (GTK_ADJUSTMENT (adj));
|
|
gtk_range_set_update_policy (GTK_RANGE (preview->hscr),
|
|
GTK_UPDATE_CONTINUOUS);
|
|
gtk_table_attach (GTK_TABLE (GIMP_PREVIEW (preview)->table),
|
|
preview->hscr, 0, 1, 1, 2,
|
|
GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
|
|
|
|
adj = gtk_adjustment_new (0, 0, GIMP_PREVIEW (preview)->height - 1, 1.0,
|
|
GIMP_PREVIEW (preview)->height,
|
|
GIMP_PREVIEW (preview)->height);
|
|
|
|
g_signal_connect (adj, "value-changed",
|
|
G_CALLBACK (gimp_scrolled_preview_v_scroll),
|
|
preview);
|
|
|
|
preview->vscr = gtk_vscrollbar_new (GTK_ADJUSTMENT (adj));
|
|
gtk_range_set_update_policy (GTK_RANGE (preview->vscr),
|
|
GTK_UPDATE_CONTINUOUS);
|
|
gtk_table_attach (GTK_TABLE (GIMP_PREVIEW (preview)->table),
|
|
preview->vscr, 1, 2, 0, 1,
|
|
GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
|
|
|
|
/* Connect after here so that plug-ins get a chance to override the
|
|
* default behavior. See bug #364432.
|
|
*/
|
|
g_signal_connect_after (GIMP_PREVIEW (preview)->area, "event",
|
|
G_CALLBACK (gimp_scrolled_preview_area_event),
|
|
preview);
|
|
|
|
g_signal_connect (GIMP_PREVIEW (preview)->area, "realize",
|
|
G_CALLBACK (gimp_scrolled_preview_area_realize),
|
|
preview);
|
|
g_signal_connect (GIMP_PREVIEW (preview)->area, "unrealize",
|
|
G_CALLBACK (gimp_scrolled_preview_area_unrealize),
|
|
preview);
|
|
|
|
g_signal_connect (GIMP_PREVIEW (preview)->area, "size-allocate",
|
|
G_CALLBACK (gimp_scrolled_preview_area_size_allocate),
|
|
preview);
|
|
|
|
/* navigation icon */
|
|
preview->nav_icon = gtk_event_box_new ();
|
|
gtk_table_attach (GTK_TABLE (GIMP_PREVIEW(preview)->table),
|
|
preview->nav_icon, 1,2, 1,2,
|
|
GTK_SHRINK, GTK_SHRINK, 0, 0);
|
|
|
|
image = gtk_image_new_from_stock (GIMP_STOCK_NAVIGATION, GTK_ICON_SIZE_MENU);
|
|
gtk_container_add (GTK_CONTAINER (preview->nav_icon), image);
|
|
gtk_widget_show (image);
|
|
|
|
g_signal_connect (preview->nav_icon, "button-press-event",
|
|
G_CALLBACK (gimp_scrolled_preview_nav_button_press),
|
|
preview);
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_dispose (GObject *object)
|
|
{
|
|
GimpScrolledPreview *preview = GIMP_SCROLLED_PREVIEW (object);
|
|
|
|
if (preview->nav_popup)
|
|
{
|
|
gtk_widget_destroy (preview->nav_popup);
|
|
preview->nav_popup = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_area_realize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (widget);
|
|
|
|
g_return_if_fail (preview->cursor_move == NULL);
|
|
|
|
preview->cursor_move = gdk_cursor_new_for_display (display, GDK_FLEUR);
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_area_unrealize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
if (preview->cursor_move)
|
|
{
|
|
gdk_cursor_unref (preview->cursor_move);
|
|
preview->cursor_move = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_hscr_update (GimpScrolledPreview *preview)
|
|
{
|
|
GtkAdjustment *adj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
gint width;
|
|
|
|
width = GIMP_PREVIEW (preview)->xmax - GIMP_PREVIEW (preview)->xmin;
|
|
|
|
adj->lower = 0;
|
|
adj->upper = width;
|
|
adj->page_size = GIMP_PREVIEW (preview)->width;
|
|
adj->step_increment = 1.0;
|
|
adj->page_increment = MAX (adj->page_size / 2.0, adj->step_increment);
|
|
adj->value = CLAMP (adj->value,
|
|
adj->lower, adj->upper - adj->page_size);
|
|
|
|
gtk_adjustment_changed (adj);
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_vscr_update (GimpScrolledPreview *preview)
|
|
{
|
|
GtkAdjustment *adj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
gint height;
|
|
|
|
height = GIMP_PREVIEW (preview)->ymax - GIMP_PREVIEW (preview)->ymin;
|
|
|
|
adj->lower = 0;
|
|
adj->upper = height;
|
|
adj->page_size = GIMP_PREVIEW (preview)->height;
|
|
adj->step_increment = 1.0;
|
|
adj->page_increment = MAX (adj->page_size / 2.0, adj->step_increment);
|
|
adj->value = CLAMP (adj->value,
|
|
adj->lower, adj->upper - adj->page_size);
|
|
|
|
gtk_adjustment_changed (adj);
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_area_size_allocate (GtkWidget *widget,
|
|
GtkAllocation *allocation,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
gint width = GIMP_PREVIEW (preview)->xmax - GIMP_PREVIEW (preview)->xmin;
|
|
gint height = GIMP_PREVIEW (preview)->ymax - GIMP_PREVIEW (preview)->ymin;
|
|
|
|
GIMP_PREVIEW (preview)->width = MIN (width, allocation->width);
|
|
GIMP_PREVIEW (preview)->height = MIN (height, allocation->height);
|
|
|
|
gimp_scrolled_preview_hscr_update (preview);
|
|
|
|
switch (priv->hscr_policy)
|
|
{
|
|
case GTK_POLICY_AUTOMATIC:
|
|
if (width > GIMP_PREVIEW (preview)->width)
|
|
gtk_widget_show (preview->hscr);
|
|
else
|
|
gtk_widget_hide (preview->hscr);
|
|
break;
|
|
|
|
case GTK_POLICY_ALWAYS:
|
|
gtk_widget_show (preview->hscr);
|
|
break;
|
|
|
|
case GTK_POLICY_NEVER:
|
|
gtk_widget_hide (preview->hscr);
|
|
break;
|
|
}
|
|
|
|
gimp_scrolled_preview_vscr_update (preview);
|
|
|
|
switch (priv->vscr_policy)
|
|
{
|
|
case GTK_POLICY_AUTOMATIC:
|
|
if (height > GIMP_PREVIEW (preview)->height)
|
|
gtk_widget_show (preview->vscr);
|
|
else
|
|
gtk_widget_hide (preview->vscr);
|
|
break;
|
|
|
|
case GTK_POLICY_ALWAYS:
|
|
gtk_widget_show (preview->vscr);
|
|
break;
|
|
|
|
case GTK_POLICY_NEVER:
|
|
gtk_widget_hide (preview->vscr);
|
|
break;
|
|
}
|
|
|
|
if (GTK_WIDGET_VISIBLE (preview->vscr) &&
|
|
GTK_WIDGET_VISIBLE (preview->hscr) &&
|
|
GIMP_PREVIEW_GET_CLASS (preview)->draw_thumb)
|
|
{
|
|
gtk_widget_show (preview->nav_icon);
|
|
}
|
|
else
|
|
{
|
|
gtk_widget_hide (preview->nav_icon);
|
|
}
|
|
|
|
gimp_preview_draw (GIMP_PREVIEW (preview));
|
|
gimp_preview_invalidate (GIMP_PREVIEW (preview));
|
|
}
|
|
|
|
static gboolean
|
|
gimp_scrolled_preview_area_event (GtkWidget *area,
|
|
GdkEvent *event,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
GdkEventButton *button_event = (GdkEventButton *) event;
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_BUTTON_PRESS:
|
|
switch (button_event->button)
|
|
{
|
|
case 1:
|
|
case 2:
|
|
gtk_widget_get_pointer (area, &priv->drag_x, &priv->drag_y);
|
|
|
|
priv->drag_xoff = GIMP_PREVIEW (preview)->xoff;
|
|
priv->drag_yoff = GIMP_PREVIEW (preview)->yoff;
|
|
priv->in_drag = TRUE;
|
|
gtk_grab_add (area);
|
|
break;
|
|
|
|
case 3:
|
|
return TRUE;
|
|
}
|
|
break;
|
|
|
|
case GDK_BUTTON_RELEASE:
|
|
if (priv->in_drag &&
|
|
(button_event->button == 1 || button_event->button == 2))
|
|
{
|
|
gtk_grab_remove (area);
|
|
priv->in_drag = FALSE;
|
|
}
|
|
break;
|
|
|
|
case GDK_MOTION_NOTIFY:
|
|
if (priv->in_drag)
|
|
{
|
|
GtkAdjustment *hadj;
|
|
GtkAdjustment *vadj;
|
|
gint x, y;
|
|
|
|
hadj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
vadj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
|
|
gtk_widget_get_pointer (area, &x, &y);
|
|
|
|
x = priv->drag_xoff - (x - priv->drag_x);
|
|
y = priv->drag_yoff - (y - priv->drag_y);
|
|
|
|
x = CLAMP (x, hadj->lower, hadj->upper - hadj->page_size);
|
|
y = CLAMP (y, vadj->lower, vadj->upper - vadj->page_size);
|
|
|
|
if (GIMP_PREVIEW (preview)->xoff != x ||
|
|
GIMP_PREVIEW (preview)->yoff != y)
|
|
{
|
|
gtk_adjustment_set_value (hadj, x);
|
|
gtk_adjustment_set_value (vadj, y);
|
|
|
|
gimp_preview_draw (GIMP_PREVIEW (preview));
|
|
gimp_preview_invalidate (GIMP_PREVIEW (preview));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GDK_SCROLL:
|
|
{
|
|
GdkEventScroll *sevent = (GdkEventScroll *) event;
|
|
GdkScrollDirection direction = sevent->direction;
|
|
GtkAdjustment *adj;
|
|
gfloat value;
|
|
|
|
/* Ctrl-Scroll is reserved for zooming */
|
|
if (sevent->state & GDK_CONTROL_MASK)
|
|
return FALSE;
|
|
|
|
if (sevent->state & GDK_SHIFT_MASK)
|
|
switch (direction)
|
|
{
|
|
case GDK_SCROLL_UP: direction = GDK_SCROLL_LEFT; break;
|
|
case GDK_SCROLL_DOWN: direction = GDK_SCROLL_RIGHT; break;
|
|
case GDK_SCROLL_LEFT: direction = GDK_SCROLL_UP; break;
|
|
case GDK_SCROLL_RIGHT: direction = GDK_SCROLL_DOWN; break;
|
|
}
|
|
|
|
switch (direction)
|
|
{
|
|
case GDK_SCROLL_UP:
|
|
case GDK_SCROLL_DOWN:
|
|
default:
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
break;
|
|
|
|
case GDK_SCROLL_RIGHT:
|
|
case GDK_SCROLL_LEFT:
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
break;
|
|
}
|
|
|
|
value = gtk_adjustment_get_value (adj);
|
|
|
|
switch (direction)
|
|
{
|
|
case GDK_SCROLL_UP:
|
|
case GDK_SCROLL_LEFT:
|
|
value -= adj->page_increment / 2;
|
|
break;
|
|
|
|
case GDK_SCROLL_DOWN:
|
|
case GDK_SCROLL_RIGHT:
|
|
value += adj->page_increment / 2;
|
|
break;
|
|
}
|
|
|
|
gtk_adjustment_set_value (adj, CLAMP (value,
|
|
adj->lower,
|
|
adj->upper - adj->page_size));
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_h_scroll (GtkAdjustment *hadj,
|
|
GimpPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
preview->xoff = hadj->value;
|
|
|
|
gimp_preview_area_set_offsets (GIMP_PREVIEW_AREA (preview->area),
|
|
preview->xoff, preview->yoff);
|
|
|
|
if (! (priv->in_drag || priv->frozen))
|
|
{
|
|
gimp_preview_draw (preview);
|
|
gimp_preview_invalidate (preview);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_v_scroll (GtkAdjustment *vadj,
|
|
GimpPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
preview->yoff = vadj->value;
|
|
|
|
gimp_preview_area_set_offsets (GIMP_PREVIEW_AREA (preview->area),
|
|
preview->xoff, preview->yoff);
|
|
|
|
if (! (priv->in_drag || priv->frozen))
|
|
{
|
|
gimp_preview_draw (preview);
|
|
gimp_preview_invalidate (preview);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gimp_scrolled_preview_nav_button_press (GtkWidget *widget,
|
|
GdkEventButton *event,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
GimpPreview *gimp_preview = GIMP_PREVIEW (preview);
|
|
GtkAdjustment *adj;
|
|
|
|
if (preview->nav_popup)
|
|
return TRUE;
|
|
|
|
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
|
|
{
|
|
GtkWidget *outer;
|
|
GtkWidget *inner;
|
|
GtkWidget *area;
|
|
GdkCursor *cursor;
|
|
gint x, y;
|
|
gdouble h, v;
|
|
|
|
preview->nav_popup = gtk_window_new (GTK_WINDOW_POPUP);
|
|
|
|
gtk_window_set_screen (GTK_WINDOW (preview->nav_popup),
|
|
gtk_widget_get_screen (widget));
|
|
|
|
outer = gtk_frame_new (NULL);
|
|
gtk_frame_set_shadow_type (GTK_FRAME (outer), GTK_SHADOW_OUT);
|
|
gtk_container_add (GTK_CONTAINER (preview->nav_popup), outer);
|
|
gtk_widget_show (outer);
|
|
|
|
inner = gtk_frame_new (NULL);
|
|
gtk_frame_set_shadow_type (GTK_FRAME (inner), GTK_SHADOW_IN);
|
|
gtk_container_add (GTK_CONTAINER (outer), inner);
|
|
gtk_widget_show (inner);
|
|
|
|
area = gimp_preview_area_new ();
|
|
gtk_container_add (GTK_CONTAINER (inner), area);
|
|
|
|
g_signal_connect (area, "realize",
|
|
G_CALLBACK (gimp_scrolled_preview_nav_popup_realize),
|
|
preview);
|
|
g_signal_connect (area, "unrealize",
|
|
G_CALLBACK (gimp_scrolled_preview_nav_popup_unrealize),
|
|
preview);
|
|
g_signal_connect (area, "event",
|
|
G_CALLBACK (gimp_scrolled_preview_nav_popup_event),
|
|
preview);
|
|
g_signal_connect_after (area, "expose-event",
|
|
G_CALLBACK (gimp_scrolled_preview_nav_popup_expose),
|
|
preview);
|
|
|
|
GIMP_PREVIEW_GET_CLASS (preview)->draw_thumb (gimp_preview,
|
|
GIMP_PREVIEW_AREA (area),
|
|
POPUP_SIZE, POPUP_SIZE);
|
|
gtk_widget_realize (area);
|
|
gtk_widget_show (area);
|
|
|
|
gdk_window_get_origin (widget->window, &x, &y);
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
h = (adj->value / adj->upper) + (adj->page_size / adj->upper) / 2.0;
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
v = (adj->value / adj->upper) + (adj->page_size / adj->upper) / 2.0;
|
|
|
|
x += event->x - h * (gdouble) GIMP_PREVIEW_AREA (area)->width;
|
|
y += event->y - v * (gdouble) GIMP_PREVIEW_AREA (area)->height;
|
|
|
|
gtk_window_move (GTK_WINDOW (preview->nav_popup),
|
|
x - 2 * widget->style->xthickness,
|
|
y - 2 * widget->style->ythickness);
|
|
|
|
gtk_widget_show (preview->nav_popup);
|
|
|
|
gtk_grab_add (area);
|
|
|
|
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
|
|
GDK_FLEUR);
|
|
|
|
gdk_pointer_grab (area->window, TRUE,
|
|
GDK_BUTTON_RELEASE_MASK |
|
|
GDK_BUTTON_MOTION_MASK |
|
|
GDK_POINTER_MOTION_HINT_MASK,
|
|
area->window, cursor,
|
|
event->time);
|
|
|
|
gdk_cursor_unref (cursor);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_nav_popup_realize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
if (! preview->nav_gc)
|
|
{
|
|
preview->nav_gc = gdk_gc_new (widget->window);
|
|
|
|
gdk_gc_set_function (preview->nav_gc, GDK_INVERT);
|
|
gdk_gc_set_line_attributes (preview->nav_gc,
|
|
PEN_WIDTH,
|
|
GDK_LINE_SOLID, GDK_CAP_BUTT, GDK_JOIN_ROUND);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_nav_popup_unrealize (GtkWidget *widget,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
if (preview->nav_gc)
|
|
{
|
|
g_object_unref (preview->nav_gc);
|
|
preview->nav_gc = NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gimp_scrolled_preview_nav_popup_event (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
switch (event->type)
|
|
{
|
|
case GDK_BUTTON_RELEASE:
|
|
{
|
|
GdkEventButton *button_event = (GdkEventButton *) event;
|
|
|
|
if (button_event->button == 1)
|
|
{
|
|
gtk_grab_remove (widget);
|
|
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
|
|
button_event->time);
|
|
|
|
gtk_widget_destroy (preview->nav_popup);
|
|
preview->nav_popup = NULL;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GDK_MOTION_NOTIFY:
|
|
{
|
|
GtkAdjustment *hadj;
|
|
GtkAdjustment *vadj;
|
|
gint cx, cy;
|
|
gdouble x, y;
|
|
|
|
hadj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
vadj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
|
|
gtk_widget_get_pointer (widget, &cx, &cy);
|
|
|
|
x = cx * (hadj->upper - hadj->lower) / widget->allocation.width;
|
|
y = cy * (vadj->upper - vadj->lower) / widget->allocation.height;
|
|
|
|
x += hadj->lower - hadj->page_size / 2;
|
|
y += vadj->lower - vadj->page_size / 2;
|
|
|
|
gtk_adjustment_set_value (hadj, CLAMP (x,
|
|
hadj->lower,
|
|
hadj->upper - hadj->page_size));
|
|
gtk_adjustment_set_value (vadj, CLAMP (y,
|
|
vadj->lower,
|
|
vadj->upper - vadj->page_size));
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
gdk_window_process_updates (widget->window, FALSE);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gimp_scrolled_preview_nav_popup_expose (GtkWidget *widget,
|
|
GdkEventExpose *event,
|
|
GimpScrolledPreview *preview)
|
|
{
|
|
GtkAdjustment *adj;
|
|
gdouble x, y;
|
|
gdouble w, h;
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
|
|
x = adj->value / (adj->upper - adj->lower);
|
|
w = adj->page_size / (adj->upper - adj->lower);
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
|
|
y = adj->value / (adj->upper - adj->lower);
|
|
h = adj->page_size / (adj->upper - adj->lower);
|
|
|
|
if (w >= 1.0 && h >= 1.0)
|
|
return FALSE;
|
|
|
|
gdk_gc_set_clip_rectangle (preview->nav_gc, &event->area);
|
|
|
|
gdk_draw_rectangle (widget->window, preview->nav_gc,
|
|
FALSE,
|
|
x * (gdouble) widget->allocation.width + PEN_WIDTH / 2,
|
|
y * (gdouble) widget->allocation.height + PEN_WIDTH / 2,
|
|
MAX (1,
|
|
ceil (w * widget->allocation.width) - PEN_WIDTH),
|
|
MAX (1,
|
|
ceil (h * widget->allocation.height) - PEN_WIDTH));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gimp_scrolled_preview_set_cursor (GimpPreview *preview)
|
|
{
|
|
if (! GTK_WIDGET_REALIZED (preview->area))
|
|
return;
|
|
|
|
if (preview->xmax - preview->xmin > preview->width ||
|
|
preview->ymax - preview->ymin > preview->height)
|
|
{
|
|
gdk_window_set_cursor (preview->area->window,
|
|
GIMP_SCROLLED_PREVIEW (preview)->cursor_move);
|
|
}
|
|
else
|
|
{
|
|
gdk_window_set_cursor (preview->area->window, preview->default_cursor);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gimp_scrolled_preview_set_position:
|
|
* @preview: a #GimpScrolledPreview
|
|
* @x: horizontal scroll offset
|
|
* @y: vertical scroll offset
|
|
*
|
|
* Since: GIMP 2.4
|
|
**/
|
|
void
|
|
gimp_scrolled_preview_set_position (GimpScrolledPreview *preview,
|
|
gint x,
|
|
gint y)
|
|
{
|
|
GtkAdjustment *adj;
|
|
|
|
g_return_if_fail (GIMP_IS_SCROLLED_PREVIEW (preview));
|
|
|
|
gimp_scrolled_preview_hscr_update (preview);
|
|
gimp_scrolled_preview_vscr_update (preview);
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->hscr));
|
|
gtk_adjustment_set_value (adj, x - GIMP_PREVIEW (preview)->xmin);
|
|
|
|
adj = gtk_range_get_adjustment (GTK_RANGE (preview->vscr));
|
|
gtk_adjustment_set_value (adj, y - GIMP_PREVIEW (preview)->ymin);
|
|
}
|
|
|
|
/**
|
|
* gimp_scrolled_preview_set_policy
|
|
* @preview: a #GimpScrolledPreview
|
|
* @hscrollbar_policy: policy for horizontal scrollbar
|
|
* @vscrollbar_policy: policy for vertical scrollbar
|
|
*
|
|
* Since: GIMP 2.4
|
|
**/
|
|
void
|
|
gimp_scrolled_preview_set_policy (GimpScrolledPreview *preview,
|
|
GtkPolicyType hscrollbar_policy,
|
|
GtkPolicyType vscrollbar_policy)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv;
|
|
|
|
g_return_if_fail (GIMP_IS_SCROLLED_PREVIEW (preview));
|
|
|
|
priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
priv->hscr_policy = hscrollbar_policy;
|
|
priv->vscr_policy = vscrollbar_policy;
|
|
|
|
gtk_widget_queue_resize (GIMP_PREVIEW (preview)->area);
|
|
}
|
|
|
|
|
|
/**
|
|
* gimp_scrolled_preview_freeze:
|
|
* @preview: a #GimpScrolledPreview
|
|
*
|
|
* While the @preview is frozen, it is not going to redraw itself in
|
|
* response to scroll events.
|
|
*
|
|
* This function should only be used to implement widgets derived from
|
|
* #GimpScrolledPreview. There is no point in calling this from a plug-in.
|
|
*
|
|
* Since: GIMP 2.4
|
|
**/
|
|
void
|
|
gimp_scrolled_preview_freeze (GimpScrolledPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv;
|
|
|
|
g_return_if_fail (GIMP_IS_SCROLLED_PREVIEW (preview));
|
|
|
|
priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
priv->frozen++;
|
|
}
|
|
|
|
/**
|
|
* gimp_scrolled_preview_thaw:
|
|
* @preview: a #GimpScrolledPreview
|
|
*
|
|
* While the @preview is frozen, it is not going to redraw itself in
|
|
* response to scroll events.
|
|
*
|
|
* This function should only be used to implement widgets derived from
|
|
* #GimpScrolledPreview. There is no point in calling this from a plug-in.
|
|
*
|
|
* Since: GIMP 2.4
|
|
**/
|
|
void
|
|
gimp_scrolled_preview_thaw (GimpScrolledPreview *preview)
|
|
{
|
|
GimpScrolledPreviewPrivate *priv;
|
|
|
|
g_return_if_fail (GIMP_IS_SCROLLED_PREVIEW (preview));
|
|
|
|
priv = GIMP_SCROLLED_PREVIEW_GET_PRIVATE (preview);
|
|
|
|
g_return_if_fail (priv->frozen > 0);
|
|
|
|
priv->frozen--;
|
|
|
|
if (! priv->frozen)
|
|
{
|
|
gimp_preview_draw (GIMP_PREVIEW (preview));
|
|
gimp_preview_invalidate (GIMP_PREVIEW (preview));
|
|
}
|
|
}
|