537 lines
14 KiB
C
537 lines
14 KiB
C
/*
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* Copyright (C) 2012 - Juan Ferrer Toribio
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "vn-column-image.h"
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#include "../vn-grid-model.h"
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#define LOAD_IMAGE _IMAGE_DIR"/load.gif"
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G_DEFINE_TYPE (VnColumnImage, vn_column_image, VN_TYPE_COLUMN);
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typedef struct
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{
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VnColumnImage * obj;
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GtkTreeModel * model;
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GtkTreeIter * iter;
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GtkCellRenderer * cell;
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gchar * name;
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}
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DownloadData;
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typedef struct
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{
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gchar * path;
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gboolean error;
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gint tooltip_size;
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GtkWidget * image;
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}
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TooltipData;
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Methods
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static void vn_column_image_download_error (VnColumnImage * obj, const GError * error)
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{
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g_object_set (VN_COLUMN (obj)->cell, "icon-name", "image-missing", NULL);
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}
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static void free_object (gpointer object)
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{
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if (object != NULL)
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g_object_unref (object);
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}
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static void free_tooltip_data (TooltipData * data)
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{
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if (data)
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{
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g_free (data->path);
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if (data->image)
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g_object_unref (data->image);
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}
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g_free (data);
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}
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static void vn_column_image_on_tooltip_size (GdkPixbufLoader * loader, gint width,
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gint height, gpointer tsize)
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{
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gint h, w, size = GPOINTER_TO_INT (tsize);
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if (width > size || height > size)
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{
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if (width >= height)
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{
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w = size;
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h = height * w / width;
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}
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else
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{
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h = size;
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w = width * h / height;
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}
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}
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else
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{
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w = width;
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h = height;
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}
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gdk_pixbuf_loader_set_size (loader, w, h);
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}
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static void vn_column_image_on_download_tooltip (DbFileLoader * fl,
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GBytes * bytes, const GError * error, TooltipData * data)
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{
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if (error)
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data->image = g_object_ref_sink (gtk_image_new_from_icon_name
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("image-missing", GTK_ICON_SIZE_MENU));
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else if (bytes && data)
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{
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gsize size;
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GError * err = NULL;
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const guchar * raw_data = g_bytes_get_data (bytes, &size);
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GdkPixbufLoader * loader = gdk_pixbuf_loader_new ();
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if (data->tooltip_size > 0)
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g_signal_connect (loader, "size-prepared",
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G_CALLBACK (vn_column_image_on_tooltip_size),
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GINT_TO_POINTER (data->tooltip_size));
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if (gdk_pixbuf_loader_write (loader, raw_data, size, &err)
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&& gdk_pixbuf_loader_close (loader, &err))
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{
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GdkPixbuf * pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
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if (data->image && G_IS_OBJECT (data->image))
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g_object_unref (data->image);
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data->image = g_object_ref_sink (gtk_image_new_from_pixbuf (pixbuf));
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}
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else
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{
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gdk_pixbuf_loader_close (loader, NULL);
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g_error_free (err);
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}
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g_object_unref (loader);
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}
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gtk_tooltip_trigger_tooltip_query (gdk_display_get_default());
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}
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static gboolean vn_column_image_on_query_tooltip (GtkTreeView * view,
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gint x, gint y, gboolean k, GtkTooltip * tip, VnColumnImage * obj)
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{
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gboolean ret = FALSE;
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TooltipData * data;
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GtkTreeIter iter;
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GtkTreePath * path = NULL;
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if (gtk_tree_view_get_tooltip_context (view, &x, &y, k, NULL, &path, &iter))
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{
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gint wx, wy;
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GdkRectangle rect;
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gtk_tree_view_convert_bin_window_to_widget_coords (view, x, y, &wx, &wy);
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gtk_tree_view_get_background_area
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(view, path, GTK_TREE_VIEW_COLUMN (obj), &rect);
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if (!(rect.x < wx && wx < rect.x + rect.width))
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{
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gtk_tree_path_free (path);
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return FALSE;
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}
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}
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else
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return FALSE;
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if (obj->tooltips
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&& (data = g_hash_table_lookup (obj->tooltips, iter.user_data))
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&& !data->error && data->path)
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{
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gtk_tree_view_set_tooltip_cell (view, tip, path,
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GTK_TREE_VIEW_COLUMN (obj), VN_COLUMN (obj)->cell);
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if (!data->image)
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{
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data->image = g_object_ref_sink (gtk_image_new_from_file (LOAD_IMAGE));
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gtk_tooltip_set_custom (tip, data->image);
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db_file_loader_download (obj->loader, data->path,
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(DbFileLoaderCallbackFunc) vn_column_image_on_download_tooltip, data);
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}
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else
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gtk_tooltip_set_custom (tip, data->image);
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ret = TRUE;
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}
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gtk_tree_path_free (path);
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return ret;
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}
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static GdkPixbuf * vn_column_image_set_image (VnColumnImage * obj,
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GtkCellRenderer * cell, GBytes * bytes, gboolean pix)
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{
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gsize size;
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GdkPixbuf * pixbuf = NULL;
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GError * error = NULL;
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const guchar * raw_data = g_bytes_get_data (bytes, &size);
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if (raw_data)
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{
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GdkPixbufLoader * loader = gdk_pixbuf_loader_new ();
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if (gdk_pixbuf_loader_write (loader, raw_data, size, &error)
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&& gdk_pixbuf_loader_close (loader, &error))
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{
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pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
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g_object_set (cell, "pixbuf", pixbuf, NULL);
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}
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else
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{
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gdk_pixbuf_loader_close (loader, NULL);
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vn_column_image_download_error (obj, error);
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g_error_free (error);
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}
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g_object_unref (loader);
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}
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return pix && pixbuf ? g_object_ref (pixbuf) : NULL;
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}
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static void vn_column_image_on_download (DbFileLoader * obj, GBytes * bytes,
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const GError * error, DownloadData * data)
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{
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GtkTreePath * path;
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if (error)
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vn_column_image_download_error (data->obj, error);
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else if (bytes && vn_grid_model_iter_is_valid (data->iter, data->model))
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{
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if (data->obj->loaded)
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g_hash_table_replace (data->obj->loaded, g_strdup (data->name),
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vn_column_image_set_image (data->obj, data->cell, bytes, TRUE));
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path = gtk_tree_model_get_path (data->model, data->iter);
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gtk_tree_model_row_changed (data->model, path, data->iter);
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gtk_tree_path_free (path);
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}
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g_object_unref (data->obj);
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g_object_unref (data->model);
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gtk_tree_iter_free (data->iter);
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g_free (data->name);
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g_free (data);
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}
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static void vn_column_image_set_value (VnColumnImage * obj, GtkTreeModel * model,
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GtkTreeIter * iter, GtkCellRenderer * cell, const GValue * value)
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{
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GType type = G_VALUE_TYPE (value);
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if (type == GVN_TYPE_NULL)
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g_object_set (cell, "pixbuf", NULL, "icon-name", NULL, NULL);
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else if (type == G_TYPE_BYTES)
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{
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GBytes * bytes = g_value_get_boxed (value);
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if (bytes)
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vn_column_image_set_image (obj, cell, bytes, FALSE);
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else
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vn_column_image_download_error (obj, NULL);
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}
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else if (type == G_TYPE_STRING)
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{
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DownloadData * data;
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gchar * cell_name;
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const gchar * name = g_value_get_string (value);
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GtkTreeView * view = GTK_TREE_VIEW
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(gtk_tree_view_column_get_tree_view (GTK_TREE_VIEW_COLUMN (obj)));
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if (view != obj->tree_view)
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{
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if (GTK_IS_TREE_VIEW (obj->tree_view))
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g_signal_handlers_disconnect_by_func (obj->tree_view,
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vn_column_image_on_query_tooltip, obj);
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g_signal_connect (view, "query-tooltip",
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G_CALLBACK (vn_column_image_on_query_tooltip), obj);
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g_object_set (view, "has-tooltip", TRUE, NULL);
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obj->tree_view = view;
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}
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if (obj->loaded)
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{
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if (g_hash_table_contains (obj->loaded, name))
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{
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GdkPixbuf * pixbuf = g_hash_table_lookup (obj->loaded, name);
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if (pixbuf)
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g_object_set (cell, "pixbuf", pixbuf, NULL);
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else
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vn_column_image_download_error (obj, NULL);
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if (obj->tooltips
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&& !g_hash_table_contains (obj->tooltips, iter->user_data))
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{
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TooltipData * data = g_new (TooltipData, 1);
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data->path = g_strconcat ("/", obj->tooltip_path, "/", name, NULL);
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data->error = FALSE;
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data->tooltip_size = obj->tooltip_size;
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data->image = NULL;
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g_hash_table_insert (obj->tooltips, iter->user_data, data);
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}
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return;
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}
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else
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{
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gint view_x, view_y;
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GdkRectangle view_rect, cell_rect;
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GtkTreePath * path = gtk_tree_model_get_path (model, iter);
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gtk_tree_view_get_cell_area
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(view, path, GTK_TREE_VIEW_COLUMN (obj), &cell_rect);
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gtk_tree_path_free (path);
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gtk_tree_view_get_visible_rect (view, &view_rect);
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gtk_tree_view_convert_tree_to_bin_window_coords
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(view, view_rect.x, view_rect.y, &view_x, &view_y);
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if (!(view_x <= cell_rect.x && cell_rect.x <= view_x + view_rect.width
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&& view_y <= cell_rect.y && cell_rect.y <= view_y + view_rect.height))
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return;
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}
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}
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else
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obj->loaded = g_hash_table_new_full
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((GHashFunc) g_str_hash, (GEqualFunc) g_str_equal,
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(GDestroyNotify) g_free, (GDestroyNotify) free_object);
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cell_name =
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/*obj->external_loader ?
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g_strconcat ("/", obj->path, "/", name, NULL):*/
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g_strdup (name);
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g_hash_table_insert (obj->loaded, g_strdup (cell_name), NULL);
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if (!obj->loader)
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obj->loader = db_file_loader_new (obj->host, obj->path);
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if (obj->tooltip_path && !obj->tooltips)
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obj->tooltips = g_hash_table_new_full
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((GHashFunc) g_direct_hash, (GEqualFunc) g_direct_equal,
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(GDestroyNotify) NULL, (GDestroyNotify) free_tooltip_data);
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data = g_new (DownloadData, 1);
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data->obj = g_object_ref (obj);
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data->model = g_object_ref (model);
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data->iter = gtk_tree_iter_copy (iter);
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data->cell = cell;
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data->name = cell_name;
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db_file_loader_download (obj->loader, cell_name,
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(DbFileLoaderCallbackFunc) vn_column_image_on_download, data);
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}
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}
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static void vn_column_image_on_model_changed (VnColumnImage * obj)
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{
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if (obj->loader)
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db_file_loader_cancel_all (obj->loader);
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if (obj->loaded)
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g_hash_table_destroy (obj->loaded);
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if (obj->tooltips)
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g_hash_table_destroy (obj->tooltips);
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obj->loaded = NULL;
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obj->tooltips = NULL;
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}
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static void vn_column_image_set_editable (VnColumn * obj, gboolean editable){}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Property
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enum
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{
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PROP_HOST = 1
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,PROP_PATH
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,PROP_TOOLTIP_PATH
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,PROP_TOOLTIP_SIZE
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,PROP_FILE_LOADER
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};
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static void vn_column_image_set_property (VnColumnImage * obj, guint id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_HOST:
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g_free (obj->host);
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obj->host = g_value_dup_string (value);
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break;
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case PROP_PATH:
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g_free (obj->path);
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obj->path = g_value_dup_string (value);
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break;
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case PROP_TOOLTIP_PATH:
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g_free (obj->tooltip_path);
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obj->tooltip_path = g_value_dup_string (value);
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break;
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case PROP_TOOLTIP_SIZE:
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obj->tooltip_size = g_value_get_int (value);
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break;
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case PROP_FILE_LOADER:
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obj->loader = g_value_dup_object (value);
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if (obj->loader)
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obj->external_loader = TRUE;
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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static void vn_column_image_get_property (VnColumnImage * obj, guint id,
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GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_HOST:
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g_value_set_string (value, obj->host);
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break;
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case PROP_PATH:
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g_value_set_string (value, obj->path);
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break;
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case PROP_TOOLTIP_PATH:
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g_value_set_string (value, obj->tooltip_path);
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break;
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case PROP_TOOLTIP_SIZE:
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g_value_set_int (value, obj->tooltip_size);
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break;
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case PROP_FILE_LOADER:
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g_value_set_object (value, obj->loader);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class
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static void vn_column_image_init (VnColumnImage * obj)
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{
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GtkCellRenderer * cell = gtk_cell_renderer_pixbuf_new ();
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VN_COLUMN_GET_CLASS (obj)->set_renderer (VN_COLUMN (obj), cell);
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obj->host = NULL;
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obj->path = NULL;
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obj->tooltip_path = NULL;
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obj->loader = NULL;
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obj->external_loader = FALSE;
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obj->loaded = NULL;
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obj->tooltips = NULL;
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obj->tree_view = NULL;
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}
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static void vn_column_image_finalize (VnColumnImage * obj)
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{
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g_free (obj->host);
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g_free (obj->path);
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g_free (obj->tooltip_path);
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if (obj->loader)
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{
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db_file_loader_cancel_all (obj->loader);
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g_object_unref (obj->loader);
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}
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if (obj->loaded)
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g_hash_table_destroy (obj->loaded);
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if (obj->tooltips)
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g_hash_table_destroy (obj->tooltips);
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if (GTK_IS_TREE_VIEW (obj->tree_view))
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g_signal_handlers_disconnect_by_func (obj->tree_view,
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vn_column_image_on_query_tooltip, obj);
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G_OBJECT_CLASS (vn_column_image_parent_class)->finalize (G_OBJECT (obj));
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}
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static void vn_column_image_class_init (VnColumnImageClass * klass)
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{
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GObjectClass * k = G_OBJECT_CLASS (klass);
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VnColumnClass * col_k = VN_COLUMN_CLASS (klass);
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k->finalize = (GObjectFinalizeFunc) vn_column_image_finalize;
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k->set_property = (GObjectSetPropertyFunc) vn_column_image_set_property;
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k->get_property = (GObjectGetPropertyFunc) vn_column_image_get_property;
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col_k->set_value = (VnColumnSetValueFunc) vn_column_image_set_value;
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col_k->set_editable = (VnColumnSetEditableFunc) vn_column_image_set_editable;
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col_k->model_changed = (VnColumnModelChangedFunc) vn_column_image_on_model_changed;
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g_object_class_install_property (k, PROP_HOST,
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g_param_spec_string ("host"
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,_("Host")
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,_("The host web server name to get the images")
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,NULL
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,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
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));
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g_object_class_install_property (k, PROP_PATH,
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g_param_spec_string ("path"
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,_("Path")
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,_("Base path from the host where the images will be downloaded")
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,NULL
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,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
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));
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g_object_class_install_property (k, PROP_TOOLTIP_PATH,
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g_param_spec_string ("tooltip-path"
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,_("Tooltip path")
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,_("Prefix for the path of the images to be shown in the tooltip. "
|
|
"Starting after the path of the column and appending the name "
|
|
"on each cell")
|
|
,NULL
|
|
,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
|
|
));
|
|
|
|
g_object_class_install_property (k, PROP_TOOLTIP_SIZE,
|
|
g_param_spec_int ("tooltip-size"
|
|
,_("Tooltip size")
|
|
,_("Size of the bigger side of the tooltip images, the another "
|
|
"side will be scaled accordingly and smaller images won't be "
|
|
"scaled")
|
|
,-1
|
|
,G_MAXINT
|
|
,300
|
|
,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
|
|
));
|
|
|
|
g_object_class_install_property (k, PROP_FILE_LOADER,
|
|
g_param_spec_object ("file-loader"
|
|
,_("File loader")
|
|
,_("An optional file loader, if it's NULL the column will create one")
|
|
,DB_TYPE_FILE_LOADER
|
|
,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
|
|
));
|
|
}
|