gtk2/demos/icon-browser/iconbrowserwin.c
Matthias Clasen e8b830a3dd dragsource: Reshuffle api a bit
Remove arguments from the constructor.

For actions, we now default to COPY, which is the most common one
that we should enable by default (MOVE requires handling deletion
on the the source side, and ASK only makes sense if we have
multiple actions).

For the content provider, we add a new ::prepare signal where
it should be provided just-in-time.
2020-01-08 18:48:21 -05:00

541 lines
16 KiB
C

#include <string.h>
#include "iconbrowserapp.h"
#include "iconbrowserwin.h"
#include "iconstore.h"
#include <gtk/gtk.h>
/* Drag 'n Drop */
typedef struct
{
gchar *id;
gchar *name;
gchar *description;
} Context;
static void
context_free (gpointer data)
{
Context *context = data;
g_free (context->id);
g_free (context->name);
g_free (context->description);
g_free (context);
}
struct _IconBrowserWindow
{
GtkApplicationWindow parent;
GHashTable *contexts;
GtkWidget *context_list;
Context *current_context;
gboolean symbolic;
GtkWidget *symbolic_radio;
GtkTreeModelFilter *filter_model;
GtkWidget *details;
GtkListStore *store;
GtkCellRenderer *cell;
GtkCellRenderer *text_cell;
GtkWidget *search;
GtkWidget *searchbar;
GtkWidget *searchentry;
GtkWidget *list;
GtkWidget *image1;
GtkWidget *image2;
GtkWidget *image3;
GtkWidget *image4;
GtkWidget *image5;
GtkWidget *image6;
GtkWidget *label6;
GtkWidget *description;
};
struct _IconBrowserWindowClass
{
GtkApplicationWindowClass parent_class;
};
G_DEFINE_TYPE(IconBrowserWindow, icon_browser_window, GTK_TYPE_APPLICATION_WINDOW);
static void
search_text_changed (GtkEntry *entry, IconBrowserWindow *win)
{
const gchar *text;
text = gtk_editable_get_text (GTK_EDITABLE (entry));
if (text[0] == '\0')
return;
gtk_tree_model_filter_refilter (win->filter_model);
}
static void
set_image (GtkWidget *image, const gchar *name, gint size)
{
gtk_image_set_from_icon_name (GTK_IMAGE (image), name);
gtk_image_set_pixel_size (GTK_IMAGE (image), size);
}
static void
item_activated (GtkIconView *icon_view, GtkTreePath *path, IconBrowserWindow *win)
{
GtkTreeIter iter;
gchar *name;
gchar *description;
gint column;
gtk_tree_model_get_iter (GTK_TREE_MODEL (win->filter_model), &iter, path);
if (win->symbolic)
column = ICON_STORE_SYMBOLIC_NAME_COLUMN;
else
column = ICON_STORE_NAME_COLUMN;
gtk_tree_model_get (GTK_TREE_MODEL (win->filter_model), &iter,
column, &name,
ICON_STORE_DESCRIPTION_COLUMN, &description,
-1);
if (name == NULL || !gtk_icon_theme_has_icon (gtk_icon_theme_get_default (), name))
{
g_free (description);
return;
}
gtk_window_set_title (GTK_WINDOW (win->details), name);
set_image (win->image1, name, 16);
set_image (win->image2, name, 24);
set_image (win->image3, name, 32);
set_image (win->image4, name, 48);
set_image (win->image5, name, 64);
if (win->symbolic)
{
gtk_widget_show (win->image6);
gtk_widget_show (win->label6);
set_image (win->image6, name, 64);
}
else
{
gtk_widget_hide (win->image6);
gtk_widget_hide (win->label6);
}
if (description && description[0])
{
gtk_label_set_text (GTK_LABEL (win->description), description);
gtk_widget_show (win->description);
}
else
{
gtk_widget_hide (win->description);
}
gtk_window_present (GTK_WINDOW (win->details));
g_free (name);
g_free (description);
}
static void
add_icon (IconBrowserWindow *win,
const gchar *name,
const gchar *description,
const gchar *context)
{
gchar *regular_name;
gchar *symbolic_name;
regular_name = g_strdup (name);
if (!gtk_icon_theme_has_icon (gtk_icon_theme_get_default (), regular_name))
{
g_free (regular_name);
regular_name = NULL;
}
symbolic_name = g_strconcat (name, "-symbolic", NULL);
if (!gtk_icon_theme_has_icon (gtk_icon_theme_get_default (), symbolic_name))
{
g_free (symbolic_name);
symbolic_name = NULL;
}
gtk_list_store_insert_with_values (win->store, NULL, -1,
ICON_STORE_NAME_COLUMN, regular_name,
ICON_STORE_SYMBOLIC_NAME_COLUMN, symbolic_name,
ICON_STORE_DESCRIPTION_COLUMN, description,
ICON_STORE_CONTEXT_COLUMN, context,
-1);
}
static void
add_context (IconBrowserWindow *win,
const gchar *id,
const gchar *name,
const gchar *description)
{
Context *c;
GtkWidget *row;
c = g_new (Context, 1);
c->id = g_strdup (id);
c->name = g_strdup (name);
c->description = g_strdup (description);
g_hash_table_insert (win->contexts, c->id, c);
row = gtk_label_new (name);
gtk_label_set_xalign (GTK_LABEL (row), 0);
g_object_set_data (G_OBJECT (row), "context", c);
gtk_widget_show (row);
g_object_set (row, "margin", 10, NULL);
gtk_list_box_insert (GTK_LIST_BOX (win->context_list), row, -1);
/* set the tooltip on the list box row */
row = gtk_widget_get_parent (row);
gtk_widget_set_tooltip_text (row, description);
if (win->current_context == NULL)
win->current_context = c;
}
static void
selected_context_changed (GtkListBox *list, IconBrowserWindow *win)
{
GtkWidget *row;
GtkWidget *label;
row = GTK_WIDGET (gtk_list_box_get_selected_row (list));
if (row == NULL)
return;
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (win->search), FALSE);
label = gtk_bin_get_child (GTK_BIN (row));
win->current_context = g_object_get_data (G_OBJECT (label), "context");
gtk_tree_model_filter_refilter (win->filter_model);
}
static void
populate (IconBrowserWindow *win)
{
GFile *file;
GKeyFile *kf;
char *data;
gsize length;
char **groups;
int i;
file = g_file_new_for_uri ("resource:/org/gtk/iconbrowser/gtk/icon.list");
g_file_load_contents (file, NULL, &data, &length, NULL, NULL);
kf = g_key_file_new ();
g_key_file_load_from_data (kf, data, length, G_KEY_FILE_NONE, NULL);
groups = g_key_file_get_groups (kf, &length);
for (i = 0; i < length; i++)
{
const char *context;
const char *name;
const char *description;
char **keys;
gsize len;
int j;
context = groups[i];
name = g_key_file_get_string (kf, context, "Name", NULL);
description = g_key_file_get_string (kf, context, "Description", NULL);
add_context (win, context, name, description);
keys = g_key_file_get_keys (kf, context, &len, NULL);
for (j = 0; j < len; j++)
{
const char *key = keys[j];
const char *value;
if (strcmp (key, "Name") == 0 || strcmp (key, "Description") == 0)
continue;
value = g_key_file_get_string (kf, context, key, NULL);
add_icon (win, key, value, context);
}
g_strfreev (keys);
}
g_strfreev (groups);
}
static void
copy_to_clipboard (GtkButton *button,
IconBrowserWindow *win)
{
GdkClipboard *clipboard;
clipboard = gtk_widget_get_clipboard (GTK_WIDGET (win));
gdk_clipboard_set_text (clipboard, gtk_window_get_title (GTK_WINDOW (win->details)));
}
static gboolean
icon_visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
IconBrowserWindow *win = data;
gchar *context;
gchar *name;
gint column;
gboolean search;
const gchar *search_text;
gboolean visible;
search = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (win->search));
search_text = gtk_editable_get_text (GTK_EDITABLE (win->searchentry));
if (win->symbolic)
column = ICON_STORE_SYMBOLIC_NAME_COLUMN;
else
column = ICON_STORE_NAME_COLUMN;
gtk_tree_model_get (model, iter,
column, &name,
ICON_STORE_CONTEXT_COLUMN, &context,
-1);
if (!name)
visible = FALSE;
else if (search)
visible = strstr (name, search_text) != NULL;
else
visible = win->current_context != NULL && g_strcmp0 (context, win->current_context->id) == 0;
g_free (name);
g_free (context);
return visible;
}
static void
symbolic_toggled (GtkToggleButton *toggle, IconBrowserWindow *win)
{
gint column;
win->symbolic = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (toggle));
if (win->symbolic)
column = ICON_STORE_SYMBOLIC_NAME_COLUMN;
else
column = ICON_STORE_NAME_COLUMN;
icon_store_set_text_column (ICON_STORE (win->store), column);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (win->list), win->cell, "icon-name", column, NULL);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (win->list), win->text_cell, "text", column, NULL);
gtk_tree_model_filter_refilter (win->filter_model);
gtk_widget_queue_draw (win->list);
}
static void
search_mode_toggled (GObject *searchbar, GParamSpec *pspec, IconBrowserWindow *win)
{
if (gtk_search_bar_get_search_mode (GTK_SEARCH_BAR (searchbar)))
gtk_list_box_unselect_all (GTK_LIST_BOX (win->context_list));
}
static GdkPaintable *
get_image_paintable (GtkImage *image)
{
const gchar *icon_name;
GtkIconTheme *icon_theme;
GtkIconInfo *icon_info;
int size;
switch (gtk_image_get_storage_type (image))
{
case GTK_IMAGE_PAINTABLE:
return g_object_ref (gtk_image_get_paintable (image));
case GTK_IMAGE_ICON_NAME:
icon_name = gtk_image_get_icon_name (image);
size = gtk_image_get_pixel_size (image);
icon_theme = gtk_icon_theme_get_for_display (gtk_widget_get_display (GTK_WIDGET (image)));
icon_info = gtk_icon_theme_lookup_icon (icon_theme, icon_name, size,
GTK_ICON_LOOKUP_FORCE_SIZE | GTK_ICON_LOOKUP_GENERIC_FALLBACK);
if (icon_info == NULL)
return NULL;
return gtk_icon_info_load_icon (icon_info, NULL);
default:
g_warning ("Image storage type %d not handled",
gtk_image_get_storage_type (image));
return NULL;
}
}
static void
drag_begin (GtkDragSource *source,
GdkDrag *drag,
GtkWidget *widget)
{
GdkPaintable *paintable;
paintable = get_image_paintable (GTK_IMAGE (widget));
if (paintable)
{
int w, h;
w = gdk_paintable_get_intrinsic_width (paintable);
h = gdk_paintable_get_intrinsic_height (paintable);
gtk_drag_source_set_icon (source, paintable, w, h);
g_object_unref (paintable);
}
}
static void
get_texture (GValue *value,
gpointer data)
{
GdkPaintable *paintable = get_image_paintable (GTK_IMAGE (data));
if (GDK_IS_TEXTURE (paintable))
g_value_set_object (value, paintable);
}
static void
get_file (GValue *value,
gpointer data)
{
const char *name;
GtkIconInfo *info;
GFile *file;
name = gtk_image_get_icon_name (GTK_IMAGE (data));
info = gtk_icon_theme_lookup_icon (gtk_icon_theme_get_default (), name, -1, 0);
file = g_file_new_for_path (gtk_icon_info_get_filename (info));
g_value_set_object (value, file);
g_object_unref (file);
g_object_unref (info);
}
static void
setup_image_dnd (GtkWidget *image)
{
GdkContentProvider *content;
GtkDragSource *source;
source = gtk_drag_source_new ();
content = gdk_content_provider_new_with_callback (GDK_TYPE_TEXTURE, get_texture, image);
gtk_drag_source_set_content (source, content);
g_object_unref (content);
g_signal_connect (source, "drag-begin", G_CALLBACK (drag_begin), image);
gtk_drag_source_attach (source, image, GDK_BUTTON1_MASK);
}
static void
setup_scalable_image_dnd (GtkWidget *image)
{
GdkContentProvider *content;
GtkDragSource *source;
source = gtk_drag_source_new ();
content = gdk_content_provider_new_with_callback (G_TYPE_FILE, get_file, image);
gtk_drag_source_set_content (source, content);
g_object_unref (content);
g_signal_connect (source, "drag-begin", G_CALLBACK (drag_begin), image);
gtk_drag_source_attach (source, image, GDK_BUTTON1_MASK);
}
static void
icon_browser_window_init (IconBrowserWindow *win)
{
GdkContentFormats *list;
gtk_widget_init_template (GTK_WIDGET (win));
list = gdk_content_formats_new (NULL, 0);
list = gtk_content_formats_add_text_targets (list);
gtk_icon_view_enable_model_drag_source (GTK_ICON_VIEW (win->list),
GDK_BUTTON1_MASK,
list,
GDK_ACTION_COPY);
gdk_content_formats_unref (list);
setup_image_dnd (win->image1);
setup_image_dnd (win->image2);
setup_image_dnd (win->image3);
setup_image_dnd (win->image4);
setup_image_dnd (win->image5);
setup_scalable_image_dnd (win->image6);
win->contexts = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, context_free);
gtk_tree_model_filter_set_visible_func (win->filter_model, icon_visible_func, win, NULL);
gtk_window_set_transient_for (GTK_WINDOW (win->details), GTK_WINDOW (win));
g_signal_connect (win->searchbar, "notify::search-mode-enabled",
G_CALLBACK (search_mode_toggled), win);
gtk_search_bar_set_key_capture_widget (GTK_SEARCH_BAR (win->searchbar),
GTK_WIDGET (win));
symbolic_toggled (GTK_TOGGLE_BUTTON (win->symbolic_radio), win);
populate (win);
}
static void
icon_browser_window_finalize (GObject *object)
{
IconBrowserWindow *win = ICON_BROWSER_WINDOW (object);
g_hash_table_unref (win->contexts);
G_OBJECT_CLASS (icon_browser_window_parent_class)->finalize (object);
}
static void
icon_browser_window_class_init (IconBrowserWindowClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = icon_browser_window_finalize;
g_type_ensure (ICON_STORE_TYPE);
gtk_widget_class_set_template_from_resource (GTK_WIDGET_CLASS (class),
"/org/gtk/iconbrowser/gtk/window.ui");
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, context_list);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, filter_model);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, symbolic_radio);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, details);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, store);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, cell);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, text_cell);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, search);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, searchbar);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, searchentry);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, list);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image1);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image2);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image3);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image4);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image5);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, image6);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, label6);
gtk_widget_class_bind_template_child (GTK_WIDGET_CLASS (class), IconBrowserWindow, description);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), search_text_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), item_activated);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), selected_context_changed);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), symbolic_toggled);
gtk_widget_class_bind_template_callback (GTK_WIDGET_CLASS (class), copy_to_clipboard);
}
IconBrowserWindow *
icon_browser_window_new (IconBrowserApp *app)
{
return g_object_new (ICON_BROWSER_WINDOW_TYPE, "application", app, NULL);
}