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Gimp/app/widgets/gimptagpopup.c
Nils Philippsen b109e05806 app: let the tag popup own its tag objects 
This should fix crashes in which tag objects got accessed after they
were disposed, because they still were stored with the popup object.
2013-04-16 11:16:41 +02:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimptagentry.c
* Copyright (C) 2008 Aurimas Juška <aurisj@svn.gnome.org>
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimptag.h"
#include "core/gimptagged.h"
#include "core/gimptaggedcontainer.h"
#include "core/gimpviewable.h"
#include "gimpcombotagentry.h"
#include "gimptagentry.h"
#include "gimptagpopup.h"
#include "gimp-intl.h"
#define MENU_SCROLL_STEP1 8
#define MENU_SCROLL_STEP2 15
#define MENU_SCROLL_FAST_ZONE 8
#define MENU_SCROLL_TIMEOUT1 50
#define MENU_SCROLL_TIMEOUT2 20
#define GIMP_TAG_POPUP_MARGIN 5
#define GIMP_TAG_POPUP_PADDING 2
#define GIMP_TAG_POPUP_LINE_SPACING 2
enum
{
PROP_0,
PROP_OWNER
};
struct _PopupTagData
{
GimpTag *tag;
GdkRectangle bounds;
GtkStateType state;
};
static void gimp_tag_popup_constructed (GObject *object);
static void gimp_tag_popup_dispose (GObject *object);
static void gimp_tag_popup_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_tag_popup_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gboolean gimp_tag_popup_border_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpTagPopup *popup);
static gboolean gimp_tag_popup_list_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpTagPopup *popup);
static gboolean gimp_tag_popup_border_event (GtkWidget *widget,
GdkEvent *event);
static gboolean gimp_tag_popup_list_event (GtkWidget *widget,
GdkEvent *event,
GimpTagPopup *popup);
static gboolean gimp_tag_popup_is_in_tag (PopupTagData *tag_data,
gint x,
gint y);
static void gimp_tag_popup_queue_draw_tag (GimpTagPopup *widget,
PopupTagData *tag_data);
static void gimp_tag_popup_toggle_tag (GimpTagPopup *popup,
PopupTagData *tag_data);
static void gimp_tag_popup_check_can_toggle (GimpTagged *tagged,
GimpTagPopup *popup);
static gint gimp_tag_popup_layout_tags (GimpTagPopup *popup,
gint width);
static gboolean gimp_tag_popup_scroll_timeout (gpointer data);
static void gimp_tag_popup_remove_scroll_timeout (GimpTagPopup *popup);
static gboolean gimp_tag_popup_scroll_timeout_initial (gpointer data);
static void gimp_tag_popup_start_scrolling (GimpTagPopup *popup);
static void gimp_tag_popup_stop_scrolling (GimpTagPopup *popup);
static void gimp_tag_popup_scroll_by (GimpTagPopup *popup,
gint step);
static void gimp_tag_popup_handle_scrolling (GimpTagPopup *popup,
gint x,
gint y,
gboolean enter,
gboolean motion);
static gboolean gimp_tag_popup_button_scroll (GimpTagPopup *popup,
GdkEventButton *event);
static void get_arrows_visible_area (GimpTagPopup *combo_entry,
GdkRectangle *border,
GdkRectangle *upper,
GdkRectangle *lower,
gint *arrow_space);
static void get_arrows_sensitive_area (GimpTagPopup *popup,
GdkRectangle *upper,
GdkRectangle *lower);
G_DEFINE_TYPE (GimpTagPopup, gimp_tag_popup, GTK_TYPE_WINDOW);
#define parent_class gimp_tag_popup_parent_class
static void
gimp_tag_popup_class_init (GimpTagPopupClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = gimp_tag_popup_constructed;
object_class->dispose = gimp_tag_popup_dispose;
object_class->set_property = gimp_tag_popup_set_property;
object_class->get_property = gimp_tag_popup_get_property;
g_object_class_install_property (object_class, PROP_OWNER,
g_param_spec_object ("owner", NULL, NULL,
GIMP_TYPE_COMBO_TAG_ENTRY,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
gimp_tag_popup_init (GimpTagPopup *popup)
{
GtkWidget *widget = GTK_WIDGET (popup);
popup->upper_arrow_state = GTK_STATE_NORMAL;
popup->lower_arrow_state = GTK_STATE_NORMAL;
gtk_widget_add_events (widget,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_KEY_RELEASE_MASK |
GDK_SCROLL_MASK);
popup->frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (popup->frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (popup), popup->frame);
gtk_widget_show (popup->frame);
popup->alignment = gtk_alignment_new (0.5, 0.5, 1.0, 1.0);
gtk_container_add (GTK_CONTAINER (popup->frame), popup->alignment);
gtk_widget_show (popup->alignment);
popup->tag_area = gtk_drawing_area_new ();
gtk_widget_add_events (popup->tag_area,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK);
gtk_container_add (GTK_CONTAINER (popup->alignment), popup->tag_area);
gtk_widget_show (popup->tag_area);
g_signal_connect (popup->alignment, "expose-event",
G_CALLBACK (gimp_tag_popup_border_expose),
popup);
g_signal_connect (popup, "event",
G_CALLBACK (gimp_tag_popup_border_event),
NULL);
g_signal_connect (popup->tag_area, "expose-event",
G_CALLBACK (gimp_tag_popup_list_expose),
popup);
g_signal_connect (popup->tag_area, "event",
G_CALLBACK (gimp_tag_popup_list_event),
popup);
}
static void
gimp_tag_popup_constructed (GObject *object)
{
GimpTagPopup *popup = GIMP_TAG_POPUP (object);
GimpTaggedContainer *container;
GtkWidget *entry;
GtkAllocation entry_allocation;
GtkStyle *frame_style;
gint x;
gint y;
gint width;
gint height;
gint popup_height;
GHashTable *tag_hash;
GList *tag_list;
GList *tag_iterator;
gint i;
gint max_height;
gint screen_height;
gchar **current_tags;
gint current_count;
GdkRectangle popup_rects[2]; /* variants of popup placement */
GdkRectangle popup_rect; /* best popup rect in screen coordinates */
G_OBJECT_CLASS (parent_class)->constructed (object);
entry = GTK_WIDGET (popup->combo_entry);
gtk_window_set_screen (GTK_WINDOW (popup), gtk_widget_get_screen (entry));
popup->context = gtk_widget_create_pango_context (GTK_WIDGET (popup));
popup->layout = pango_layout_new (popup->context);
gtk_widget_get_allocation (entry, &entry_allocation);
gtk_widget_style_get (GTK_WIDGET (popup),
"scroll-arrow-vlength", &popup->scroll_arrow_height,
NULL);
pango_layout_set_attributes (popup->layout,
popup->combo_entry->normal_item_attr);
current_tags = gimp_tag_entry_parse_tags (GIMP_TAG_ENTRY (popup->combo_entry));
current_count = g_strv_length (current_tags);
container = GIMP_TAG_ENTRY (popup->combo_entry)->container;
tag_hash = container->tag_ref_counts;
tag_list = g_hash_table_get_keys (tag_hash);
tag_list = g_list_sort (tag_list, gimp_tag_compare_func);
popup->tag_count = g_list_length (tag_list);
popup->tag_data = g_new0 (PopupTagData, popup->tag_count);
for (i = 0, tag_iterator = tag_list;
i < popup->tag_count;
i++, tag_iterator = g_list_next (tag_iterator))
{
PopupTagData *tag_data = &popup->tag_data[i];
gint j;
tag_data->tag = tag_iterator->data;
tag_data->state = GTK_STATE_NORMAL;
g_object_ref (tag_data->tag);
for (j = 0; j < current_count; j++)
{
if (! gimp_tag_compare_with_string (tag_data->tag, current_tags[j]))
{
tag_data->state = GTK_STATE_SELECTED;
break;
}
}
}
g_list_free (tag_list);
g_strfreev (current_tags);
if (GIMP_TAG_ENTRY (popup->combo_entry)->mode == GIMP_TAG_ENTRY_MODE_QUERY)
{
for (i = 0; i < popup->tag_count; i++)
{
if (popup->tag_data[i].state != GTK_STATE_SELECTED)
{
popup->tag_data[i].state = GTK_STATE_INSENSITIVE;
}
}
gimp_container_foreach (GIMP_CONTAINER (container),
(GFunc) gimp_tag_popup_check_can_toggle,
popup);
}
frame_style = gtk_widget_get_style (popup->frame);
width = (entry_allocation.width -
2 * frame_style->xthickness);
height = (gimp_tag_popup_layout_tags (popup, width) +
2 * frame_style->ythickness);
gdk_window_get_origin (gtk_widget_get_window (entry), &x, &y);
max_height = entry_allocation.height * 10;
screen_height = gdk_screen_get_height (gtk_widget_get_screen (entry));
popup_height = MIN (height, max_height);
popup_rects[0].x = x;
popup_rects[0].y = 0;
popup_rects[0].width = entry_allocation.width;
popup_rects[0].height = y + entry_allocation.height;
popup_rects[1].x = x;
popup_rects[1].y = y;
popup_rects[1].width = popup_rects[0].width;
popup_rects[1].height = screen_height - popup_rects[0].height;
if (popup_rects[0].height >= popup_height)
{
popup_rect = popup_rects[0];
popup_rect.y += popup_rects[0].height - popup_height;
popup_rect.height = popup_height;
}
else if (popup_rects[1].height >= popup_height)
{
popup_rect = popup_rects[1];
popup_rect.height = popup_height;
}
else
{
if (popup_rects[0].height >= popup_rects[1].height)
{
popup_rect = popup_rects[0];
popup_rect.y += popup->scroll_arrow_height + frame_style->ythickness;
}
else
{
popup_rect = popup_rects[1];
popup_rect.y -= popup->scroll_arrow_height + frame_style->ythickness;
}
popup_height = popup_rect.height;
}
if (popup_height < height)
{
popup->arrows_visible = TRUE;
popup->upper_arrow_state = GTK_STATE_INSENSITIVE;
gtk_alignment_set_padding (GTK_ALIGNMENT (popup->alignment),
popup->scroll_arrow_height + 2,
popup->scroll_arrow_height + 2, 0, 0);
popup_height -= 2 * popup->scroll_arrow_height + 4;
popup->scroll_height = height - popup_rect.height;
popup->scroll_y = 0;
popup->scroll_step = 0;
}
gtk_widget_set_size_request (popup->tag_area, width, popup_height);
gtk_window_move (GTK_WINDOW (popup), popup_rect.x, popup_rect.y);
gtk_window_resize (GTK_WINDOW (popup), popup_rect.width, popup_rect.height);
}
static void
gimp_tag_popup_dispose (GObject *object)
{
GimpTagPopup *popup = GIMP_TAG_POPUP (object);
gimp_tag_popup_remove_scroll_timeout (popup);
if (popup->combo_entry)
{
g_object_unref (popup->combo_entry);
popup->combo_entry = NULL;
}
if (popup->layout)
{
g_object_unref (popup->layout);
popup->layout = NULL;
}
if (popup->context)
{
g_object_unref (popup->context);
popup->context = NULL;
}
if (popup->tag_data)
{
gint i;
for (i = 0; i < popup->tag_count; i++)
{
g_object_unref (popup->tag_data[i].tag);
}
g_free (popup->tag_data);
popup->tag_data = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gimp_tag_popup_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpTagPopup *popup = GIMP_TAG_POPUP (object);
switch (property_id)
{
case PROP_OWNER:
popup->combo_entry = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_tag_popup_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpTagPopup *popup = GIMP_TAG_POPUP (object);
switch (property_id)
{
case PROP_OWNER:
g_value_set_object (value, popup->combo_entry);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/**
* gimp_tag_popup_new:
* @combo_entry: #GimpComboTagEntry which is owner of the popup window.
*
* Tag popup widget is only useful for for #GimpComboTagEntry and
* should not be used elsewhere.
*
* Return value: a newly created #GimpTagPopup widget.
**/
GtkWidget *
gimp_tag_popup_new (GimpComboTagEntry *combo_entry)
{
g_return_val_if_fail (GIMP_IS_COMBO_TAG_ENTRY (combo_entry), NULL);
return g_object_new (GIMP_TYPE_TAG_POPUP,
"type", GTK_WINDOW_POPUP,
"owner", combo_entry,
NULL);
}
/**
* gimp_tag_popup_show:
* @tag_popup: an instance of #GimpTagPopup
*
* Show tag popup widget. If mouse grab cannot be obtained for widget,
* it is destroyed.
**/
void
gimp_tag_popup_show (GimpTagPopup *popup)
{
GtkWidget *widget;
g_return_if_fail (GIMP_IS_TAG_POPUP (popup));
widget = GTK_WIDGET (popup);
gtk_widget_show (widget);
gtk_grab_add (widget);
gtk_widget_grab_focus (widget);
if (gdk_pointer_grab (gtk_widget_get_window (widget), TRUE,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL,
GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
{
/* pointer grab must be attained otherwise user would have
* problems closing the popup window.
*/
gtk_grab_remove (widget);
gtk_widget_destroy (widget);
}
}
static gint
gimp_tag_popup_layout_tags (GimpTagPopup *popup,
gint width)
{
PangoFontMetrics *font_metrics;
gint x;
gint y;
gint height = 0;
gint i;
gint line_height;
gint space_width;
x = GIMP_TAG_POPUP_MARGIN;
y = GIMP_TAG_POPUP_MARGIN;
font_metrics = pango_context_get_metrics (popup->context,
pango_context_get_font_description (popup->context),
NULL);
line_height = PANGO_PIXELS ((pango_font_metrics_get_ascent (font_metrics) +
pango_font_metrics_get_descent (font_metrics)));
space_width = PANGO_PIXELS (pango_font_metrics_get_approximate_char_width (font_metrics));
pango_font_metrics_unref (font_metrics);
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
gint w, h;
pango_layout_set_text (popup->layout,
gimp_tag_get_name (tag_data->tag), -1);
pango_layout_get_pixel_size (popup->layout, &w, &h);
tag_data->bounds.width = w + 2 * GIMP_TAG_POPUP_PADDING;
tag_data->bounds.height = h + 2 * GIMP_TAG_POPUP_PADDING;
if (x + space_width + tag_data->bounds.width +
GIMP_TAG_POPUP_MARGIN - 1 > width)
{
x = GIMP_TAG_POPUP_MARGIN;
y += line_height + 2 * GIMP_TAG_POPUP_PADDING + GIMP_TAG_POPUP_LINE_SPACING;
}
tag_data->bounds.x = x;
tag_data->bounds.y = y;
x += tag_data->bounds.width + space_width;
}
if (gtk_widget_get_direction (GTK_WIDGET (popup)) == GTK_TEXT_DIR_RTL)
{
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
tag_data->bounds.x = (width -
tag_data->bounds.x -
tag_data->bounds.width);
}
}
height = y + line_height + GIMP_TAG_POPUP_MARGIN;
return height;
}
static gboolean
gimp_tag_popup_border_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpTagPopup *popup)
{
GdkWindow *window = gtk_widget_get_window (widget);
GtkStyle *style = gtk_widget_get_style (widget);
GdkRectangle border;
GdkRectangle upper;
GdkRectangle lower;
gint arrow_space;
gint arrow_size;
if (event->window != gtk_widget_get_window (widget))
return FALSE;
get_arrows_visible_area (popup, &border, &upper, &lower, &arrow_space);
arrow_size = 0.7 * arrow_space;
gtk_paint_box (style, window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
&event->area, widget, "menu",
0, 0, -1, -1);
if (popup->arrows_visible)
{
/* upper arrow */
gtk_paint_box (style, window,
popup->upper_arrow_state,
GTK_SHADOW_OUT,
&event->area, widget, "menu",
upper.x,
upper.y,
upper.width,
upper.height);
gtk_paint_arrow (style, window,
popup->upper_arrow_state,
GTK_SHADOW_OUT,
&event->area, widget, "menu_scroll_arrow_up",
GTK_ARROW_UP,
TRUE,
upper.x + (upper.width - arrow_size) / 2,
upper.y + style->ythickness + (arrow_space - arrow_size) / 2,
arrow_size, arrow_size);
/* lower arrow */
gtk_paint_box (style, window,
popup->lower_arrow_state,
GTK_SHADOW_OUT,
&event->area, widget, "menu",
lower.x,
lower.y,
lower.width,
lower.height);
gtk_paint_arrow (style, window,
popup->lower_arrow_state,
GTK_SHADOW_OUT,
&event->area, widget, "menu_scroll_arrow_down",
GTK_ARROW_DOWN,
TRUE,
lower.x + (lower.width - arrow_size) / 2,
lower.y + style->ythickness + (arrow_space - arrow_size) / 2,
arrow_size, arrow_size);
}
return FALSE;
}
static gboolean
gimp_tag_popup_border_event (GtkWidget *widget,
GdkEvent *event)
{
GimpTagPopup *popup = GIMP_TAG_POPUP (widget);
if (event->type == GDK_BUTTON_PRESS)
{
GdkEventButton *button_event = (GdkEventButton *) event;
GtkAllocation allocation;
gint x;
gint y;
if (button_event->window == gtk_widget_get_window (widget) &&
gimp_tag_popup_button_scroll (popup, button_event))
{
return TRUE;
}
gtk_widget_get_allocation (widget, &allocation);
gdk_window_get_pointer (gtk_widget_get_window (widget), &x, &y, NULL);
if (button_event->window != gtk_widget_get_window (popup->tag_area) &&
(x < allocation.y ||
y < allocation.x ||
x > allocation.x + allocation.width ||
y > allocation.y + allocation.height))
{
/* user has clicked outside the popup area,
* which means it should be hidden.
*/
gtk_grab_remove (widget);
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
GDK_CURRENT_TIME);
gtk_widget_destroy (widget);
}
}
else if (event->type == GDK_MOTION_NOTIFY)
{
GdkEventMotion *motion_event = (GdkEventMotion *) event;
gint x, y;
gdk_window_get_pointer (gtk_widget_get_window (widget), &x, &y, NULL);
gimp_tag_popup_handle_scrolling (popup, x, y,
motion_event->window ==
gtk_widget_get_window (widget),
TRUE);
}
else if (event->type == GDK_BUTTON_RELEASE)
{
GdkEventButton *button_event = (GdkEventButton *) event;
popup->single_select_disabled = TRUE;
if (button_event->window == gtk_widget_get_window (widget) &&
gimp_tag_popup_button_scroll (popup, button_event))
{
return TRUE;
}
}
else if (event->type == GDK_GRAB_BROKEN)
{
gtk_grab_remove (widget);
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
GDK_CURRENT_TIME);
gtk_widget_destroy (widget);
}
else if (event->type == GDK_KEY_PRESS)
{
gtk_grab_remove (widget);
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
GDK_CURRENT_TIME);
gtk_widget_destroy (widget);
}
else if (event->type == GDK_SCROLL)
{
GdkEventScroll *scroll_event = (GdkEventScroll *) event;
switch (scroll_event->direction)
{
case GDK_SCROLL_RIGHT:
case GDK_SCROLL_DOWN:
gimp_tag_popup_scroll_by (popup, MENU_SCROLL_STEP2);
return TRUE;
case GDK_SCROLL_LEFT:
case GDK_SCROLL_UP:
gimp_tag_popup_scroll_by (popup, - MENU_SCROLL_STEP2);
return TRUE;
}
}
return FALSE;
}
static gboolean
gimp_tag_popup_list_expose (GtkWidget *widget,
GdkEventExpose *event,
GimpTagPopup *popup)
{
GdkWindow *window = gtk_widget_get_window (widget);
GtkStyle *style = gtk_widget_get_style (widget);
cairo_t *cr;
PangoAttribute *attribute;
PangoAttrList *attributes;
gint i;
cr = gdk_cairo_create (event->window);
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
cairo_set_line_width (cr, 1.0);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
pango_layout_set_text (popup->layout,
gimp_tag_get_name (tag_data->tag), -1);
switch (tag_data->state)
{
case GTK_STATE_SELECTED:
attributes = pango_attr_list_copy (popup->combo_entry->selected_item_attr);
break;
case GTK_STATE_INSENSITIVE:
attributes = pango_attr_list_copy (popup->combo_entry->insensitive_item_attr);
break;
default:
attributes = pango_attr_list_copy (popup->combo_entry->normal_item_attr);
break;
}
if (tag_data == popup->prelight &&
tag_data->state != GTK_STATE_INSENSITIVE)
{
attribute = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
pango_attr_list_insert (attributes, attribute);
}
pango_layout_set_attributes (popup->layout, attributes);
pango_attr_list_unref (attributes);
if (tag_data->state == GTK_STATE_SELECTED)
{
gdk_cairo_set_source_color (cr,
&popup->combo_entry->selected_item_color);
cairo_rectangle (cr,
tag_data->bounds.x - 1,
tag_data->bounds.y - popup->scroll_y,
tag_data->bounds.width + 2,
tag_data->bounds.height);
cairo_fill (cr);
cairo_translate (cr, 0.5, 0.5);
cairo_move_to (cr,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y - 1);
cairo_line_to (cr,
tag_data->bounds.x + tag_data->bounds.width - 1,
tag_data->bounds.y - popup->scroll_y - 1);
cairo_move_to (cr,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y + tag_data->bounds.height);
cairo_line_to (cr,
tag_data->bounds.x + tag_data->bounds.width - 1,
tag_data->bounds.y - popup->scroll_y + tag_data->bounds.height);
cairo_stroke (cr);
cairo_translate (cr, -0.5, -0.5);
}
cairo_move_to (cr,
(tag_data->bounds.x +
GIMP_TAG_POPUP_PADDING),
(tag_data->bounds.y -
popup->scroll_y +
GIMP_TAG_POPUP_PADDING));
pango_cairo_show_layout (cr, popup->layout);
if (tag_data == popup->prelight &&
tag_data->state != GTK_STATE_INSENSITIVE &&
! popup->single_select_disabled)
{
gtk_paint_focus (style, window,
tag_data->state,
&event->area, widget, NULL,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y,
tag_data->bounds.width,
tag_data->bounds.height);
}
}
cairo_destroy (cr);
return FALSE;
}
static gboolean
gimp_tag_popup_list_event (GtkWidget *widget,
GdkEvent *event,
GimpTagPopup *popup)
{
if (event->type == GDK_BUTTON_PRESS)
{
GdkEventButton *button_event = (GdkEventButton *) event;
gint x;
gint y;
gint i;
popup->single_select_disabled = TRUE;
x = button_event->x;
y = button_event->y + popup->scroll_y;
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
if (gimp_tag_popup_is_in_tag (tag_data, x, y))
{
gimp_tag_popup_toggle_tag (popup, tag_data);
gtk_widget_queue_draw (widget);
break;
}
}
}
else if (event->type == GDK_MOTION_NOTIFY)
{
GdkEventMotion *motion_event = (GdkEventMotion *) event;
PopupTagData *prelight = NULL;
gint x;
gint y;
gint i;
x = motion_event->x;
y = motion_event->y + popup->scroll_y;
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
if (gimp_tag_popup_is_in_tag (tag_data, x, y))
{
prelight = tag_data;
break;
}
}
if (prelight != popup->prelight)
{
if (popup->prelight)
gimp_tag_popup_queue_draw_tag (popup, popup->prelight);
popup->prelight = prelight;
if (popup->prelight)
gimp_tag_popup_queue_draw_tag (popup, popup->prelight);
}
}
else if (event->type == GDK_BUTTON_RELEASE &&
! popup->single_select_disabled)
{
GdkEventButton *button_event = (GdkEventButton *) event;
gint x;
gint y;
gint i;
popup->single_select_disabled = TRUE;
x = button_event->x;
y = button_event->y + popup->scroll_y;
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
if (gimp_tag_popup_is_in_tag (tag_data, x, y))
{
gimp_tag_popup_toggle_tag (popup, tag_data);
gtk_widget_destroy (GTK_WIDGET (popup));
break;
}
}
}
return FALSE;
}
static gboolean
gimp_tag_popup_is_in_tag (PopupTagData *tag_data,
gint x,
gint y)
{
if (x >= tag_data->bounds.x &&
y >= tag_data->bounds.y &&
x < tag_data->bounds.x + tag_data->bounds.width &&
y < tag_data->bounds.y + tag_data->bounds.height)
{
return TRUE;
}
return FALSE;
}
static void
gimp_tag_popup_queue_draw_tag (GimpTagPopup *popup,
PopupTagData *tag_data)
{
gtk_widget_queue_draw_area (popup->tag_area,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y,
tag_data->bounds.width,
tag_data->bounds.height);
}
static void
gimp_tag_popup_toggle_tag (GimpTagPopup *popup,
PopupTagData *tag_data)
{
gchar **current_tags;
GString *tag_str;
gint length;
gint i;
gboolean tag_toggled_off = FALSE;
if (tag_data->state == GTK_STATE_NORMAL)
{
tag_data->state = GTK_STATE_SELECTED;
}
else if (tag_data->state == GTK_STATE_SELECTED)
{
tag_data->state = GTK_STATE_NORMAL;
}
else
{
return;
}
current_tags = gimp_tag_entry_parse_tags (GIMP_TAG_ENTRY (popup->combo_entry));
tag_str = g_string_new ("");
length = g_strv_length (current_tags);
for (i = 0; i < length; i++)
{
if (! gimp_tag_compare_with_string (tag_data->tag, current_tags[i]))
{
tag_toggled_off = TRUE;
}
else
{
if (tag_str->len)
{
g_string_append (tag_str, gimp_tag_entry_get_separator ());
g_string_append_c (tag_str, ' ');
}
g_string_append (tag_str, current_tags[i]);
}
}
if (! tag_toggled_off)
{
/* this tag was not selected yet, so it needs to be toggled on */
if (tag_str->len)
{
g_string_append (tag_str, gimp_tag_entry_get_separator ());
g_string_append_c (tag_str, ' ');
}
g_string_append (tag_str, gimp_tag_get_name (tag_data->tag));
}
gimp_tag_entry_set_tag_string (GIMP_TAG_ENTRY (popup->combo_entry),
tag_str->str);
g_string_free (tag_str, TRUE);
g_strfreev (current_tags);
if (GIMP_TAG_ENTRY (popup->combo_entry)->mode == GIMP_TAG_ENTRY_MODE_QUERY)
{
GimpTaggedContainer *container;
container = GIMP_TAG_ENTRY (popup->combo_entry)->container;
for (i = 0; i < popup->tag_count; i++)
{
if (popup->tag_data[i].state != GTK_STATE_SELECTED)
{
popup->tag_data[i].state = GTK_STATE_INSENSITIVE;
}
}
gimp_container_foreach (GIMP_CONTAINER (container),
(GFunc) gimp_tag_popup_check_can_toggle,
popup);
}
}
static int
gimp_tag_popup_data_compare (const void *a,
const void *b)
{
return gimp_tag_compare_func (((PopupTagData *) a)->tag,
((PopupTagData *) b)->tag);
}
static void
gimp_tag_popup_check_can_toggle (GimpTagged *tagged,
GimpTagPopup *popup)
{
GList *iterator;
for (iterator = gimp_tagged_get_tags (tagged);
iterator;
iterator = g_list_next (iterator))
{
PopupTagData search_key;
PopupTagData *search_result;
search_key.tag = iterator->data;
search_result =
(PopupTagData *) bsearch (&search_key,
popup->tag_data, popup->tag_count,
sizeof (PopupTagData),
gimp_tag_popup_data_compare);
if (search_result)
{
if (search_result->state == GTK_STATE_INSENSITIVE)
{
search_result->state = GTK_STATE_NORMAL;
}
}
}
}
static gboolean
gimp_tag_popup_scroll_timeout (gpointer data)
{
GimpTagPopup *popup = data;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
gimp_tag_popup_scroll_by (popup, popup->scroll_step);
return TRUE;
}
static void
gimp_tag_popup_remove_scroll_timeout (GimpTagPopup *popup)
{
if (popup->scroll_timeout_id)
{
g_source_remove (popup->scroll_timeout_id);
popup->scroll_timeout_id = 0;
}
}
static gboolean
gimp_tag_popup_scroll_timeout_initial (gpointer data)
{
GimpTagPopup *popup = data;
guint timeout;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-timeout-repeat", &timeout,
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
gimp_tag_popup_scroll_by (popup, popup->scroll_step);
gimp_tag_popup_remove_scroll_timeout (popup);
popup->scroll_timeout_id =
gdk_threads_add_timeout (timeout,
gimp_tag_popup_scroll_timeout,
popup);
return FALSE;
}
static void
gimp_tag_popup_start_scrolling (GimpTagPopup *popup)
{
guint timeout;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-timeout-repeat", &timeout,
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
gimp_tag_popup_scroll_by (popup, popup->scroll_step);
popup->scroll_timeout_id =
gdk_threads_add_timeout (timeout,
gimp_tag_popup_scroll_timeout_initial,
popup);
}
static void
gimp_tag_popup_stop_scrolling (GimpTagPopup *popup)
{
gboolean touchscreen_mode;
gimp_tag_popup_remove_scroll_timeout (popup);
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
if (! touchscreen_mode)
{
popup->upper_arrow_prelight = FALSE;
popup->lower_arrow_prelight = FALSE;
}
}
static void
gimp_tag_popup_scroll_by (GimpTagPopup *popup,
gint step)
{
GtkStateType arrow_state;
gint new_scroll_y = popup->scroll_y + step;
arrow_state = popup->upper_arrow_state;
if (new_scroll_y < 0)
{
new_scroll_y = 0;
if (arrow_state != GTK_STATE_INSENSITIVE)
gimp_tag_popup_stop_scrolling (popup);
arrow_state = GTK_STATE_INSENSITIVE;
}
else
{
arrow_state = (popup->upper_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
}
if (arrow_state != popup->upper_arrow_state)
{
popup->upper_arrow_state = arrow_state;
gtk_widget_queue_draw (GTK_WIDGET (popup));
}
arrow_state = popup->lower_arrow_state;
if (new_scroll_y >= popup->scroll_height)
{
new_scroll_y = popup->scroll_height - 1;
if (arrow_state != GTK_STATE_INSENSITIVE)
gimp_tag_popup_stop_scrolling (popup);
arrow_state = GTK_STATE_INSENSITIVE;
}
else
{
arrow_state = (popup->lower_arrow_prelight ?
GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
}
if (arrow_state != popup->lower_arrow_state)
{
popup->lower_arrow_state = arrow_state;
gtk_widget_queue_draw (GTK_WIDGET (popup));
}
if (new_scroll_y != popup->scroll_y)
{
popup->scroll_y = new_scroll_y;
gdk_window_scroll (gtk_widget_get_window (popup->tag_area), 0, -step);
}
}
static void
gimp_tag_popup_handle_scrolling (GimpTagPopup *popup,
gint x,
gint y,
gboolean enter,
gboolean motion)
{
GdkRectangle rect;
gboolean in_arrow;
gboolean scroll_fast = FALSE;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
/* upper arrow handling */
get_arrows_sensitive_area (popup, &rect, NULL);
in_arrow = FALSE;
if (popup->arrows_visible &&
x >= rect.x &&
x < rect.x + rect.width &&
y >= rect.y &&
y < rect.y + rect.height)
{
in_arrow = TRUE;
}
if (touchscreen_mode)
popup->upper_arrow_prelight = in_arrow;
if (popup->upper_arrow_state != GTK_STATE_INSENSITIVE)
{
gboolean arrow_pressed = FALSE;
if (popup->arrows_visible)
{
if (touchscreen_mode)
{
if (enter && popup->upper_arrow_prelight)
{
if (popup->scroll_timeout_id == 0)
{
gimp_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = -MENU_SCROLL_STEP2; /* always fast */
if (! motion)
{
/* Only do stuff on click. */
gimp_tag_popup_start_scrolling (popup);
arrow_pressed = TRUE;
}
}
else
{
arrow_pressed = TRUE;
}
}
else if (! enter)
{
gimp_tag_popup_stop_scrolling (popup);
}
}
else /* !touchscreen_mode */
{
scroll_fast = (y < rect.y + MENU_SCROLL_FAST_ZONE);
if (enter && in_arrow &&
(! popup->upper_arrow_prelight ||
popup->scroll_fast != scroll_fast))
{
popup->upper_arrow_prelight = TRUE;
popup->scroll_fast = scroll_fast;
gimp_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = (scroll_fast ?
-MENU_SCROLL_STEP2 : -MENU_SCROLL_STEP1);
popup->scroll_timeout_id =
gdk_threads_add_timeout (scroll_fast ?
MENU_SCROLL_TIMEOUT2 :
MENU_SCROLL_TIMEOUT1,
gimp_tag_popup_scroll_timeout,
popup);
}
else if (! enter && ! in_arrow && popup->upper_arrow_prelight)
{
gimp_tag_popup_stop_scrolling (popup);
}
}
}
/* gimp_tag_popup_start_scrolling() might have hit the top of the
* tag_popup, so check if the button isn't insensitive before
* changing it to something else.
*/
if (popup->upper_arrow_state != GTK_STATE_INSENSITIVE)
{
GtkStateType arrow_state = GTK_STATE_NORMAL;
if (arrow_pressed)
arrow_state = GTK_STATE_ACTIVE;
else if (popup->upper_arrow_prelight)
arrow_state = GTK_STATE_PRELIGHT;
if (arrow_state != popup->upper_arrow_state)
{
popup->upper_arrow_state = arrow_state;
gdk_window_invalidate_rect (gtk_widget_get_window (GTK_WIDGET (popup)),
&rect, FALSE);
}
}
}
/* lower arrow handling */
get_arrows_sensitive_area (popup, NULL, &rect);
in_arrow = FALSE;
if (popup->arrows_visible &&
x >= rect.x &&
x < rect.x + rect.width &&
y >= rect.y &&
y < rect.y + rect.height)
{
in_arrow = TRUE;
}
if (touchscreen_mode)
popup->lower_arrow_prelight = in_arrow;
if (popup->lower_arrow_state != GTK_STATE_INSENSITIVE)
{
gboolean arrow_pressed = FALSE;
if (popup->arrows_visible)
{
if (touchscreen_mode)
{
if (enter && popup->lower_arrow_prelight)
{
if (popup->scroll_timeout_id == 0)
{
gimp_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = MENU_SCROLL_STEP2; /* always fast */
if (! motion)
{
/* Only do stuff on click. */
gimp_tag_popup_start_scrolling (popup);
arrow_pressed = TRUE;
}
}
else
{
arrow_pressed = TRUE;
}
}
else if (! enter)
{
gimp_tag_popup_stop_scrolling (popup);
}
}
else /* !touchscreen_mode */
{
scroll_fast = (y > rect.y + rect.height - MENU_SCROLL_FAST_ZONE);
if (enter && in_arrow &&
(! popup->lower_arrow_prelight ||
popup->scroll_fast != scroll_fast))
{
popup->lower_arrow_prelight = TRUE;
popup->scroll_fast = scroll_fast;
gimp_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = (scroll_fast ?
MENU_SCROLL_STEP2 : MENU_SCROLL_STEP1);
popup->scroll_timeout_id =
gdk_threads_add_timeout (scroll_fast ?
MENU_SCROLL_TIMEOUT2 :
MENU_SCROLL_TIMEOUT1,
gimp_tag_popup_scroll_timeout,
popup);
}
else if (! enter && ! in_arrow && popup->lower_arrow_prelight)
{
gimp_tag_popup_stop_scrolling (popup);
}
}
}
/* gimp_tag_popup_start_scrolling() might have hit the bottom of the
* popup, so check if the button isn't insensitive before
* changing it to something else.
*/
if (popup->lower_arrow_state != GTK_STATE_INSENSITIVE)
{
GtkStateType arrow_state = GTK_STATE_NORMAL;
if (arrow_pressed)
arrow_state = GTK_STATE_ACTIVE;
else if (popup->lower_arrow_prelight)
arrow_state = GTK_STATE_PRELIGHT;
if (arrow_state != popup->lower_arrow_state)
{
popup->lower_arrow_state = arrow_state;
gdk_window_invalidate_rect (gtk_widget_get_window (GTK_WIDGET (popup)),
&rect, FALSE);
}
}
}
}
static gboolean
gimp_tag_popup_button_scroll (GimpTagPopup *popup,
GdkEventButton *event)
{
if (popup->upper_arrow_prelight || popup->lower_arrow_prelight)
{
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
if (touchscreen_mode)
gimp_tag_popup_handle_scrolling (popup,
event->x_root,
event->y_root,
event->type == GDK_BUTTON_PRESS,
FALSE);
return TRUE;
}
return FALSE;
}
static void
get_arrows_visible_area (GimpTagPopup *popup,
GdkRectangle *border,
GdkRectangle *upper,
GdkRectangle *lower,
gint *arrow_space)
{
GtkWidget *widget = GTK_WIDGET (popup->alignment);
guint padding_top;
guint padding_bottom;
guint padding_left;
guint padding_right;
gtk_alignment_get_padding (GTK_ALIGNMENT (popup->alignment),
&padding_top, &padding_bottom,
&padding_left, &padding_right);
gtk_widget_get_allocation (widget, border);
upper->x = border->x + padding_left;
upper->y = border->y;
upper->width = border->width - padding_left - padding_right;
upper->height = padding_top;
lower->x = border->x + padding_left;
lower->y = border->y + border->height - padding_bottom;
lower->width = border->width - padding_left - padding_right;
lower->height = padding_bottom;
*arrow_space = popup->scroll_arrow_height;
}
static void
get_arrows_sensitive_area (GimpTagPopup *popup,
GdkRectangle *upper,
GdkRectangle *lower)
{
GdkRectangle tmp_border;
GdkRectangle tmp_upper;
GdkRectangle tmp_lower;
gint tmp_arrow_space;
get_arrows_visible_area (popup,
&tmp_border, &tmp_upper, &tmp_lower, &tmp_arrow_space);
if (upper)
*upper = tmp_upper;
if (lower)
*lower = tmp_lower;
}
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