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gimp/app/widgets/gimptagpopup.c

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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 <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 j;
gint max_height;
gint screen_height;
gchar **current_tags;
gint current_count;
const gchar *list_tag;
GdkRectangle popup_rects[2]; /* variants of popup placement */
GdkRectangle popup_rect; /* best popup rect in screen coordinates */
if (G_OBJECT_CLASS (parent_class)->constructed)
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];
tag_data->tag = tag_iterator->data;
tag_data->state = GTK_STATE_NORMAL;
list_tag = gimp_tag_get_name (tag_data->tag);
for (j = 0; j < current_count; j++)
{
if (! strcmp (current_tags[j], list_tag))
{
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)
{
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;
const gchar *tag;
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;
}
tag = gimp_tag_get_name (tag_data->tag);
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 (! strcmp (current_tags[i], tag))
{
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, 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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