AlderconeStudio/PIKApp
AlderconeStudio
/
PIKApp
0
0
Fork 0
Code Issues 1 Pull Requests Packages Projects Releases 1 Wiki Activity
PIKApp/app/widgets/pikatagpopup.c

1601 lines
50 KiB
C
Raw Blame History

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* pikatagentry.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 <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libpikabase/pikabase.h"
#include "libpikawidgets/pikawidgets.h"
#include "widgets-types.h"
#include "core/pikacontainer.h"
#include "core/pikacontext.h"
#include "core/pikatag.h"
#include "core/pikatagged.h"
#include "core/pikataggedcontainer.h"
#include "core/pikaviewable.h"
#include "pikacombotagentry.h"
#include "pikatagentry.h"
#include "pikatagpopup.h"
#include "pika-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 PIKA_TAG_POPUP_MARGIN 5
#define PIKA_TAG_POPUP_PADDING 2
#define PIKA_TAG_POPUP_LINE_SPACING 2
enum
{
PROP_0,
PROP_OWNER
};
struct _PopupTagData
{
PikaTag *tag;
GdkRectangle bounds;
GtkStateFlags state_flags;
};
static void pika_tag_popup_constructed (GObject *object);
static void pika_tag_popup_dispose (GObject *object);
static void pika_tag_popup_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_tag_popup_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void pika_tag_popup_get_border (GtkWidget *widget,
GtkBorder *border);
static gboolean pika_tag_popup_border_draw (GtkWidget *widget,
cairo_t *cr,
PikaTagPopup *popup);
static void pika_tag_popup_list_style_updated (GtkWidget *widget,
PikaTagPopup *popup);
static gboolean pika_tag_popup_list_draw (GtkWidget *widget,
cairo_t *cr,
PikaTagPopup *popup);
static gboolean pika_tag_popup_border_event (GtkWidget *widget,
GdkEvent *event);
static gboolean pika_tag_popup_list_event (GtkWidget *widget,
GdkEvent *event,
PikaTagPopup *popup);
static gboolean pika_tag_popup_is_in_tag (PopupTagData *tag_data,
gint x,
gint y);
static void pika_tag_popup_queue_draw_tag (PikaTagPopup *widget,
PopupTagData *tag_data);
static void pika_tag_popup_toggle_tag (PikaTagPopup *popup,
PopupTagData *tag_data);
static void pika_tag_popup_check_can_toggle (PikaTagged *tagged,
PikaTagPopup *popup);
static gint pika_tag_popup_layout_tags (PikaTagPopup *popup,
gint width);
static gboolean pika_tag_popup_scroll_timeout (gpointer data);
static void pika_tag_popup_remove_scroll_timeout (PikaTagPopup *popup);
static gboolean pika_tag_popup_scroll_timeout_initial (gpointer data);
static void pika_tag_popup_start_scrolling (PikaTagPopup *popup);
static void pika_tag_popup_stop_scrolling (PikaTagPopup *popup);
static void pika_tag_popup_scroll_by (PikaTagPopup *popup,
gint step,
const GdkEvent *event);
static void pika_tag_popup_handle_scrolling (PikaTagPopup *popup,
gint x,
gint y,
gboolean enter,
gboolean motion);
static gboolean pika_tag_popup_button_scroll (PikaTagPopup *popup,
GdkEventButton *event);
static void get_arrows_visible_area (PikaTagPopup *combo_entry,
GdkRectangle *border,
GdkRectangle *upper,
GdkRectangle *lower,
gint *arrow_space);
static void get_arrows_sensitive_area (PikaTagPopup *popup,
GdkRectangle *upper,
GdkRectangle *lower);
G_DEFINE_TYPE (PikaTagPopup, pika_tag_popup, GTK_TYPE_WINDOW);
#define parent_class pika_tag_popup_parent_class
static void
pika_tag_popup_class_init (PikaTagPopupClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->constructed = pika_tag_popup_constructed;
object_class->dispose = pika_tag_popup_dispose;
object_class->set_property = pika_tag_popup_set_property;
object_class->get_property = pika_tag_popup_get_property;
g_object_class_install_property (object_class, PROP_OWNER,
g_param_spec_object ("owner", NULL, NULL,
PIKA_TYPE_COMBO_TAG_ENTRY,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static void
pika_tag_popup_init (PikaTagPopup *popup)
{
GtkWidget *widget = GTK_WIDGET (popup);
popup->upper_arrow_state = GTK_STATE_FLAG_NORMAL;
popup->lower_arrow_state = GTK_STATE_FLAG_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 |
GDK_SMOOTH_SCROLL_MASK);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (popup)),
GTK_STYLE_CLASS_MENU);
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->border_area = gtk_event_box_new ();
gtk_container_add (GTK_CONTAINER (popup->frame), popup->border_area);
gtk_widget_show (popup->border_area);
popup->tag_area = gtk_drawing_area_new ();
gtk_widget_set_halign (popup->border_area, GTK_ALIGN_FILL);
gtk_widget_set_valign (popup->border_area, GTK_ALIGN_FILL);
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->border_area), popup->tag_area);
gtk_widget_show (popup->tag_area);
g_signal_connect (popup->border_area, "draw",
G_CALLBACK (pika_tag_popup_border_draw),
popup);
g_signal_connect (popup, "event",
G_CALLBACK (pika_tag_popup_border_event),
NULL);
g_signal_connect (popup->tag_area, "style-updated",
G_CALLBACK (pika_tag_popup_list_style_updated),
popup);
g_signal_connect (popup->tag_area, "draw",
G_CALLBACK (pika_tag_popup_list_draw),
popup);
g_signal_connect (popup->tag_area, "event",
G_CALLBACK (pika_tag_popup_list_event),
popup);
}
static void
pika_tag_popup_constructed (GObject *object)
{
PikaTagPopup *popup = PIKA_TAG_POPUP (object);
PikaTaggedContainer *container;
GtkWidget *entry;
GtkAllocation entry_allocation;
GtkBorder popup_border;
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;
GdkRectangle workarea;
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));
gtk_widget_get_allocation (entry, &entry_allocation);
gtk_widget_style_get (GTK_WIDGET (popup),
"scroll-arrow-vlength", &popup->scroll_arrow_height,
NULL);
current_tags = pika_tag_entry_parse_tags (PIKA_TAG_ENTRY (popup->combo_entry));
current_count = g_strv_length (current_tags);
container = PIKA_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, pika_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_flags = 0;
g_object_ref (tag_data->tag);
for (j = 0; j < current_count; j++)
{
if (! pika_tag_compare_with_string (tag_data->tag, current_tags[j]))
{
tag_data->state_flags = GTK_STATE_FLAG_SELECTED;
break;
}
}
}
g_list_free (tag_list);
g_strfreev (current_tags);
if (PIKA_TAG_ENTRY (popup->combo_entry)->mode == PIKA_TAG_ENTRY_MODE_QUERY)
{
for (i = 0; i < popup->tag_count; i++)
{
if (! (popup->tag_data[i].state_flags & GTK_STATE_FLAG_SELECTED))
{
popup->tag_data[i].state_flags = GTK_STATE_FLAG_INSENSITIVE;
}
}
pika_container_foreach (PIKA_CONTAINER (container),
(GFunc) pika_tag_popup_check_can_toggle,
popup);
}
pika_tag_popup_get_border (GTK_WIDGET (popup), &popup_border);
width = (entry_allocation.width -
popup_border.left - popup_border.right);
height = (pika_tag_popup_layout_tags (popup, width) +
popup_border.top + popup_border.bottom);
gdk_window_get_origin (gtk_widget_get_window (entry), &x, &y);
if (! gtk_widget_get_has_window (entry))
{
x += entry_allocation.x;
y += entry_allocation.y;
}
max_height = entry_allocation.height * 10;
gdk_monitor_get_workarea (pika_widget_get_monitor (entry), &workarea);
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 = workarea.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 + popup_border.top;
}
else
{
popup_rect = popup_rects[1];
popup_rect.y -= popup->scroll_arrow_height + popup_border.bottom;
}
popup_height = popup_rect.height;
}
if (popup_height < height)
{
popup->arrows_visible = TRUE;
popup->upper_arrow_state = GTK_STATE_FLAG_INSENSITIVE;
gtk_widget_set_margin_top (popup->tag_area,
popup->scroll_arrow_height + 2);
gtk_widget_set_margin_bottom (popup->tag_area,
popup->scroll_arrow_height + 2);
popup_height -= 2 * popup->scroll_arrow_height + 4;
popup->scroll_height = height - popup_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
pika_tag_popup_dispose (GObject *object)
{
PikaTagPopup *popup = PIKA_TAG_POPUP (object);
pika_tag_popup_remove_scroll_timeout (popup);
g_clear_object (&popup->combo_entry);
g_clear_object (&popup->layout);
if (popup->tag_data)
{
gint i;
for (i = 0; i < popup->tag_count; i++)
{
g_object_unref (popup->tag_data[i].tag);
}
g_clear_pointer (&popup->tag_data, g_free);
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_tag_popup_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaTagPopup *popup = PIKA_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
pika_tag_popup_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaTagPopup *popup = PIKA_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;
}
}
/**
* pika_tag_popup_new:
* @combo_entry: #PikaComboTagEntry which is owner of the popup window.
*
* Tag popup widget is only useful for for #PikaComboTagEntry and
* should not be used elsewhere.
*
* Returns: a newly created #PikaTagPopup widget.
**/
GtkWidget *
pika_tag_popup_new (PikaComboTagEntry *combo_entry)
{
GtkWidget *toplevel;
g_return_val_if_fail (PIKA_IS_COMBO_TAG_ENTRY (combo_entry), NULL);
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (combo_entry));
return g_object_new (PIKA_TYPE_TAG_POPUP,
"type", GTK_WINDOW_POPUP,
"owner", combo_entry,
"transient-for", GTK_IS_WINDOW (toplevel) ? toplevel : NULL,
NULL);
}
/**
* pika_tag_popup_show:
* @tag_popup: an instance of #PikaTagPopup
*
* Show tag popup widget. If mouse grab cannot be obtained for widget,
* it is destroyed.
**/
void
pika_tag_popup_show (PikaTagPopup *popup,
GdkEvent *event)
{
GtkWidget *widget;
g_return_if_fail (PIKA_IS_TAG_POPUP (popup));
widget = GTK_WIDGET (popup);
gtk_widget_show (widget);
gtk_grab_add (widget);
gtk_widget_grab_focus (widget);
if (gdk_seat_grab (gdk_event_get_seat (event),
gtk_widget_get_window (widget),
GDK_SEAT_CAPABILITY_ALL,
TRUE, NULL, event, NULL, NULL) != 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
pika_tag_popup_layout_tags (PikaTagPopup *popup,
gint width)
{
PangoFontMetrics *font_metrics;
PangoContext *context;
gint x;
gint y;
gint height = 0;
gint i;
gint line_height;
gint space_width;
x = PIKA_TAG_POPUP_MARGIN;
y = PIKA_TAG_POPUP_MARGIN;
context = gtk_widget_get_pango_context (popup->tag_area);
if (! popup->layout)
popup->layout = pango_layout_new (context);
font_metrics = pango_context_get_metrics (context,
pango_context_get_font_description (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];
PangoRectangle ink;
PangoRectangle logical;
pango_layout_set_text (popup->layout,
pika_tag_get_name (tag_data->tag), -1);
pango_layout_get_pixel_extents (popup->layout, &ink, &logical);
tag_data->bounds.width = MAX (ink.width, logical.width);
tag_data->bounds.height = MAX (ink.height, logical.height);
tag_data->bounds.width += 2 * PIKA_TAG_POPUP_PADDING;
tag_data->bounds.height += 2 * PIKA_TAG_POPUP_PADDING;
if (x + space_width + tag_data->bounds.width +
PIKA_TAG_POPUP_MARGIN - 1 > width)
{
x = PIKA_TAG_POPUP_MARGIN;
y += line_height + 2 * PIKA_TAG_POPUP_PADDING + PIKA_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 + PIKA_TAG_POPUP_MARGIN;
return height;
}
static void
pika_tag_popup_get_border (GtkWidget *widget,
GtkBorder *border)
{
GtkStyleContext *context;
GtkStateFlags state;
GtkBorder padding, border_width;
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_get_padding (context, state, &padding);
gtk_style_context_get_border (context, state, &border_width);
border->left = border_width.left + padding.left;
border->right = border_width.right + padding.right;
border->top = border_width.top + padding.top;
border->bottom = border_width.bottom + padding.bottom;
}
static void
pika_tag_popup_list_style_updated (GtkWidget *widget,
PikaTagPopup *popup)
{
g_clear_object (&popup->layout);
}
static gboolean
pika_tag_popup_border_draw (GtkWidget *widget,
cairo_t *cr,
PikaTagPopup *popup)
{
GtkStyleContext *style = gtk_widget_get_style_context (widget);
GdkRectangle border;
GdkRectangle upper;
GdkRectangle lower;
GtkBorder popup_border;
gint arrow_space;
gint arrow_size;
if (! gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)))
return FALSE;
get_arrows_visible_area (popup, &border, &upper, &lower, &arrow_space);
pika_tag_popup_get_border (widget, &popup_border);
arrow_size = 0.7 * arrow_space;
gtk_render_background (style, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
gtk_render_frame (style, cr, 0, 0,
gtk_widget_get_allocated_width (widget),
gtk_widget_get_allocated_height (widget));
if (popup->arrows_visible)
{
gtk_style_context_save (style);
/* upper arrow */
gtk_style_context_set_state (style, popup->upper_arrow_state);
gtk_render_background (style, cr,
upper.x, upper.y,
upper.width, upper.height);
gtk_render_frame (style, cr,
upper.x, upper.y,
upper.width, upper.height);
gtk_render_arrow (style, cr, 0,
upper.x + (upper.width - arrow_size) / 2,
upper.y + popup_border.top + (arrow_space - arrow_size) / 2,
arrow_size);
/* lower arrow */
gtk_style_context_set_state (style, popup->lower_arrow_state);
gtk_render_background (style, cr,
lower.x, lower.y,
lower.width, lower.height);
gtk_render_frame (style, cr,
lower.x, lower.y,
lower.width, lower.height);
gtk_render_arrow (style, cr, G_PI,
lower.x + (lower.width - arrow_size) / 2,
lower.y + popup_border.top + (arrow_space - arrow_size) / 2,
arrow_size);
gtk_style_context_restore (style);
}
return FALSE;
}
static gboolean
pika_tag_popup_border_event (GtkWidget *widget,
GdkEvent *event)
{
PikaTagPopup *popup = PIKA_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) &&
pika_tag_popup_button_scroll (popup, button_event))
{
return TRUE;
}
gtk_widget_get_allocation (widget, &allocation);
gdk_window_get_device_position (gtk_widget_get_window (widget),
gdk_event_get_device (event),
&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_seat_ungrab (gdk_event_get_seat (event));
gtk_widget_destroy (widget);
}
}
else if (event->type == GDK_MOTION_NOTIFY)
{
GdkEventMotion *motion_event = (GdkEventMotion *) event;
gint x, y;
gdk_window_get_device_position (gtk_widget_get_window (widget),
gdk_event_get_device (event),
&x, &y, NULL);
pika_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) &&
pika_tag_popup_button_scroll (popup, button_event))
{
return TRUE;
}
}
else if (event->type == GDK_GRAB_BROKEN)
{
gtk_grab_remove (widget);
gdk_seat_ungrab (gdk_event_get_seat (event));
gtk_widget_destroy (widget);
}
else if (event->type == GDK_KEY_PRESS)
{
gtk_grab_remove (widget);
gdk_seat_ungrab (gdk_event_get_seat (event));
gtk_widget_destroy (widget);
}
else if (event->type == GDK_SCROLL)
{
pika_tag_popup_scroll_by (popup, 0, event);
return TRUE;
}
return FALSE;
}
static gboolean
pika_tag_popup_list_draw (GtkWidget *widget,
cairo_t *cr,
PikaTagPopup *popup)
{
GtkStyleContext *style = gtk_widget_get_style_context (widget);
gint i;
if (! popup->layout)
{
GtkBorder popup_border;
GtkAllocation entry_allocation;
gint width;
pika_tag_popup_get_border (GTK_WIDGET (popup), &popup_border);
gtk_widget_get_allocation (GTK_WIDGET (popup->combo_entry),
&entry_allocation);
width = (entry_allocation.width -
popup_border.left - popup_border.right);
pika_tag_popup_layout_tags (popup, width);
}
for (i = 0; i < popup->tag_count; i++)
{
PopupTagData *tag_data = &popup->tag_data[i];
gtk_style_context_save (style);
pango_layout_set_text (popup->layout,
pika_tag_get_name (tag_data->tag), -1);
if (tag_data->state_flags & GTK_STATE_FLAG_SELECTED)
{
gtk_style_context_add_class (style, GTK_STYLE_CLASS_VIEW);
gtk_style_context_set_state (style, GTK_STATE_FLAG_SELECTED);
}
else if (tag_data->state_flags & GTK_STATE_FLAG_INSENSITIVE)
{
gtk_style_context_add_class (style, GTK_STYLE_CLASS_VIEW);
gtk_style_context_set_state (style, GTK_STATE_FLAG_INSENSITIVE);
}
if (tag_data == popup->prelight &&
! (tag_data->state_flags & GTK_STATE_FLAG_INSENSITIVE))
{
PangoAttribute *attribute;
PangoAttrList *attributes;
attributes = pango_attr_list_new ();
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);
}
else
{
pango_layout_set_attributes (popup->layout, NULL);
}
if (tag_data->state_flags & (GTK_STATE_FLAG_SELECTED |
GTK_STATE_FLAG_INSENSITIVE))
{
gtk_render_background (style, cr,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y,
tag_data->bounds.width,
tag_data->bounds.height);
}
gtk_render_layout (style, cr,
(tag_data->bounds.x +
PIKA_TAG_POPUP_PADDING),
(tag_data->bounds.y -
popup->scroll_y +
PIKA_TAG_POPUP_PADDING),
popup->layout);
if (tag_data == popup->prelight &&
! (tag_data->state_flags & GTK_STATE_FLAG_INSENSITIVE) &&
! popup->single_select_disabled)
{
gtk_render_focus (style, cr,
tag_data->bounds.x,
tag_data->bounds.y - popup->scroll_y,
tag_data->bounds.width,
tag_data->bounds.height);
}
gtk_style_context_restore (style);
}
return FALSE;
}
static gboolean
pika_tag_popup_list_event (GtkWidget *widget,
GdkEvent *event,
PikaTagPopup *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 (pika_tag_popup_is_in_tag (tag_data, x, y))
{
pika_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 (pika_tag_popup_is_in_tag (tag_data, x, y))
{
prelight = tag_data;
break;
}
}
if (prelight != popup->prelight)
{
if (popup->prelight)
pika_tag_popup_queue_draw_tag (popup, popup->prelight);
popup->prelight = prelight;
if (popup->prelight)
pika_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 (pika_tag_popup_is_in_tag (tag_data, x, y))
{
pika_tag_popup_toggle_tag (popup, tag_data);
gtk_widget_destroy (GTK_WIDGET (popup));
break;
}
}
}
return FALSE;
}
static gboolean
pika_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
pika_tag_popup_queue_draw_tag (PikaTagPopup *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
pika_tag_popup_toggle_tag (PikaTagPopup *popup,
PopupTagData *tag_data)
{
gchar **current_tags;
GString *tag_str;
gint length;
gint i;
gboolean tag_toggled_off = FALSE;
if (tag_data->state_flags & GTK_STATE_FLAG_SELECTED)
{
tag_data->state_flags = 0;
}
else if (! (tag_data->state_flags & GTK_STATE_FLAG_INSENSITIVE))
{
tag_data->state_flags = GTK_STATE_FLAG_SELECTED;
}
else
{
return;
}
current_tags = pika_tag_entry_parse_tags (PIKA_TAG_ENTRY (popup->combo_entry));
tag_str = g_string_new ("");
length = g_strv_length (current_tags);
for (i = 0; i < length; i++)
{
if (! pika_tag_compare_with_string (tag_data->tag, current_tags[i]))
{
tag_toggled_off = TRUE;
}
else
{
if (tag_str->len)
{
g_string_append (tag_str, pika_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, pika_tag_entry_get_separator ());
g_string_append_c (tag_str, ' ');
}
g_string_append (tag_str, pika_tag_get_name (tag_data->tag));
}
pika_tag_entry_set_tag_string (PIKA_TAG_ENTRY (popup->combo_entry),
tag_str->str);
g_string_free (tag_str, TRUE);
g_strfreev (current_tags);
if (PIKA_TAG_ENTRY (popup->combo_entry)->mode == PIKA_TAG_ENTRY_MODE_QUERY)
{
PikaTaggedContainer *container;
container = PIKA_TAG_ENTRY (popup->combo_entry)->container;
for (i = 0; i < popup->tag_count; i++)
{
if (! (popup->tag_data[i].state_flags & GTK_STATE_FLAG_SELECTED))
{
popup->tag_data[i].state_flags |= GTK_STATE_FLAG_INSENSITIVE;
}
}
pika_container_foreach (PIKA_CONTAINER (container),
(GFunc) pika_tag_popup_check_can_toggle,
popup);
}
}
static int
pika_tag_popup_data_compare (const void *a,
const void *b)
{
return pika_tag_compare_func (((PopupTagData *) a)->tag,
((PopupTagData *) b)->tag);
}
static void
pika_tag_popup_check_can_toggle (PikaTagged *tagged,
PikaTagPopup *popup)
{
GList *iterator;
for (iterator = pika_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),
pika_tag_popup_data_compare);
if (search_result)
{
if (search_result->state_flags & GTK_STATE_FLAG_INSENSITIVE)
{
search_result->state_flags &= ~GTK_STATE_FLAG_INSENSITIVE;
}
}
}
}
static gboolean
pika_tag_popup_scroll_timeout (gpointer data)
{
PikaTagPopup *popup = data;
gboolean touchscreen_mode;
g_object_get (gtk_widget_get_settings (GTK_WIDGET (popup)),
"gtk-touchscreen-mode", &touchscreen_mode,
NULL);
pika_tag_popup_scroll_by (popup, popup->scroll_step, NULL);
return TRUE;
}
static void
pika_tag_popup_remove_scroll_timeout (PikaTagPopup *popup)
{
if (popup->scroll_timeout_id)
{
g_source_remove (popup->scroll_timeout_id);
popup->scroll_timeout_id = 0;
}
}
static gboolean
pika_tag_popup_scroll_timeout_initial (gpointer data)
{
PikaTagPopup *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);
pika_tag_popup_scroll_by (popup, popup->scroll_step, NULL);
pika_tag_popup_remove_scroll_timeout (popup);
popup->scroll_timeout_id =
gdk_threads_add_timeout (timeout,
pika_tag_popup_scroll_timeout,
popup);
return FALSE;
}
static void
pika_tag_popup_start_scrolling (PikaTagPopup *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);
pika_tag_popup_scroll_by (popup, popup->scroll_step, NULL);
popup->scroll_timeout_id =
gdk_threads_add_timeout (timeout,
pika_tag_popup_scroll_timeout_initial,
popup);
}
static void
pika_tag_popup_stop_scrolling (PikaTagPopup *popup)
{
gboolean touchscreen_mode;
pika_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
pika_tag_popup_scroll_by (PikaTagPopup *popup,
gint step,
const GdkEvent *event)
{
GtkStateFlags arrow_state;
gint new_scroll_y = popup->scroll_y;
/* If event is set, we override the step value. */
if (event)
{
GdkEventScroll *scroll_event = (GdkEventScroll *) event;
gdouble delta_x;
gdouble delta_y;
switch (scroll_event->direction)
{
case GDK_SCROLL_RIGHT:
case GDK_SCROLL_DOWN:
if (popup->smooth_scrolling)
/* In some case, we get both a SMOOTH event and step events
* (right, left, up, down). If we process them all, we get
* some fluid scrolling with regular bumps, which feels
* buggy. So when smooth scrolling is in progress, we just
* skip step events until we receive the stop scroll event.
*/
return;
step = MENU_SCROLL_STEP2;
break;
case GDK_SCROLL_LEFT:
case GDK_SCROLL_UP:
if (popup->smooth_scrolling)
return;
step = - MENU_SCROLL_STEP2;
break;
case GDK_SCROLL_SMOOTH:
if (gdk_event_get_scroll_deltas (event, &delta_x, &delta_y))
{
popup->smooth_scrolling = TRUE;
step = 0;
if (delta_x < 0.0 || delta_y < 0.0)
step = (gint) (MIN (delta_x, delta_y) * MENU_SCROLL_STEP2);
else if (delta_x > 0.0 || delta_y > 0.0)
step = (gint) (MAX (delta_x, delta_y) * MENU_SCROLL_STEP2);
}
break;
}
if (gdk_event_is_scroll_stop_event (event))
popup->smooth_scrolling = FALSE;
}
if (step == 0)
return;
new_scroll_y += step;
arrow_state = popup->upper_arrow_state;
if (new_scroll_y < 0)
{
new_scroll_y = 0;
if (arrow_state != GTK_STATE_FLAG_INSENSITIVE)
pika_tag_popup_stop_scrolling (popup);
arrow_state = GTK_STATE_FLAG_INSENSITIVE;
}
else
{
arrow_state = (popup->upper_arrow_prelight ?
GTK_STATE_FLAG_PRELIGHT : GTK_STATE_FLAG_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_FLAG_INSENSITIVE)
pika_tag_popup_stop_scrolling (popup);
arrow_state = GTK_STATE_FLAG_INSENSITIVE;
}
else
{
arrow_state = (popup->lower_arrow_prelight ?
GTK_STATE_FLAG_PRELIGHT : GTK_STATE_FLAG_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
pika_tag_popup_handle_scrolling (PikaTagPopup *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_FLAG_INSENSITIVE)
{
gboolean arrow_pressed = FALSE;
if (popup->arrows_visible)
{
if (touchscreen_mode)
{
if (enter && popup->upper_arrow_prelight)
{
if (popup->scroll_timeout_id == 0)
{
pika_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = -MENU_SCROLL_STEP2; /* always fast */
if (! motion)
{
/* Only do stuff on click. */
pika_tag_popup_start_scrolling (popup);
arrow_pressed = TRUE;
}
}
else
{
arrow_pressed = TRUE;
}
}
else if (! enter)
{
pika_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;
pika_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,
pika_tag_popup_scroll_timeout,
popup);
}
else if (! enter && ! in_arrow && popup->upper_arrow_prelight)
{
pika_tag_popup_stop_scrolling (popup);
}
}
}
/* pika_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_FLAG_INSENSITIVE)
{
GtkStateFlags arrow_state = GTK_STATE_FLAG_NORMAL;
if (arrow_pressed)
arrow_state = GTK_STATE_FLAG_ACTIVE;
else if (popup->upper_arrow_prelight)
arrow_state = GTK_STATE_FLAG_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_FLAG_INSENSITIVE)
{
gboolean arrow_pressed = FALSE;
if (popup->arrows_visible)
{
if (touchscreen_mode)
{
if (enter && popup->lower_arrow_prelight)
{
if (popup->scroll_timeout_id == 0)
{
pika_tag_popup_remove_scroll_timeout (popup);
popup->scroll_step = MENU_SCROLL_STEP2; /* always fast */
if (! motion)
{
/* Only do stuff on click. */
pika_tag_popup_start_scrolling (popup);
arrow_pressed = TRUE;
}
}
else
{
arrow_pressed = TRUE;
}
}
else if (! enter)
{
pika_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;
pika_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,
pika_tag_popup_scroll_timeout,
popup);
}
else if (! enter && ! in_arrow && popup->lower_arrow_prelight)
{
pika_tag_popup_stop_scrolling (popup);
}
}
}
/* pika_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_FLAG_INSENSITIVE)
{
GtkStateFlags arrow_state = GTK_STATE_FLAG_NORMAL;
if (arrow_pressed)
arrow_state = GTK_STATE_FLAG_ACTIVE;
else if (popup->lower_arrow_prelight)
arrow_state = GTK_STATE_FLAG_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
pika_tag_popup_button_scroll (PikaTagPopup *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)
pika_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 (PikaTagPopup *popup,
GdkRectangle *border,
GdkRectangle *upper,
GdkRectangle *lower,
gint *arrow_space)
{
gint padding_top = gtk_widget_get_margin_top (popup->tag_area);
gint padding_bottom = gtk_widget_get_margin_bottom (popup->tag_area);
gint padding_left = gtk_widget_get_margin_start (popup->tag_area);
gint padding_right = gtk_widget_get_margin_end (popup->tag_area);
gtk_widget_get_allocation (popup->border_area, 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 (PikaTagPopup *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;
}
Reference in New Issue View Git Blame Copy Permalink