diff options
Diffstat (limited to 'subprojects/libgd/libgd/gd-main-icon-view.c')
| -rw-r--r-- | subprojects/libgd/libgd/gd-main-icon-view.c | 440 |
1 files changed, 440 insertions, 0 deletions
diff --git a/subprojects/libgd/libgd/gd-main-icon-view.c b/subprojects/libgd/libgd/gd-main-icon-view.c new file mode 100644 index 0000000..95bdb55 --- /dev/null +++ b/subprojects/libgd/libgd/gd-main-icon-view.c @@ -0,0 +1,440 @@ +/* + * Copyright (c) 2011 Red Hat, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2 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 Lesser General Public + * License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * Author: Cosimo Cecchi <cosimoc@redhat.com> + * + */ + +#include "gd-main-icon-view.h" +#include "gd-main-view-generic.h" +#include "gd-toggle-pixbuf-renderer.h" +#include "gd-two-lines-renderer.h" + +#include <math.h> +#include <glib/gi18n.h> +#include <cairo-gobject.h> + +#define VIEW_ITEM_WIDTH 140 +#define VIEW_ITEM_WRAP_WIDTH 128 +#define VIEW_COLUMN_SPACING 20 +#define VIEW_MARGIN 16 + +typedef struct _GdMainIconViewPrivate GdMainIconViewPrivate; + +struct _GdMainIconViewPrivate { + GtkCellRenderer *pixbuf_cell; + GtkCellRenderer *text_cell; + gboolean selection_mode; +}; + +static void gd_main_view_generic_iface_init (GdMainViewGenericIface *iface); +G_DEFINE_TYPE_WITH_CODE (GdMainIconView, gd_main_icon_view, GTK_TYPE_ICON_VIEW, + G_ADD_PRIVATE (GdMainIconView) + G_IMPLEMENT_INTERFACE (GD_TYPE_MAIN_VIEW_GENERIC, + gd_main_view_generic_iface_init)) + +static GtkTreePath* +get_source_row (GdkDragContext *context) +{ + GtkTreeRowReference *ref; + + ref = g_object_get_data (G_OBJECT (context), "gtk-icon-view-source-row"); + + if (ref) + return gtk_tree_row_reference_get_path (ref); + else + return NULL; +} + +static void +set_attributes_from_model (GdMainIconView *self) +{ + GdMainIconViewPrivate *priv; + GtkTreeModel *model = gtk_icon_view_get_model (GTK_ICON_VIEW (self)); + GtkCellLayout *layout = GTK_CELL_LAYOUT (self); + GType icon_gtype; + + priv = gd_main_icon_view_get_instance_private (self); + + if (!model) + return; + + gtk_cell_layout_clear_attributes (layout, priv->pixbuf_cell); + gtk_cell_layout_clear_attributes (layout, priv->text_cell); + + gtk_cell_layout_add_attribute (layout, priv->pixbuf_cell, + "active", GD_MAIN_COLUMN_SELECTED); + gtk_cell_layout_add_attribute (layout, priv->pixbuf_cell, + "pulse", GD_MAIN_COLUMN_PULSE); + + icon_gtype = gtk_tree_model_get_column_type (model, GD_MAIN_COLUMN_ICON); + if (icon_gtype == GDK_TYPE_PIXBUF) + gtk_cell_layout_add_attribute (layout, priv->pixbuf_cell, + "pixbuf", GD_MAIN_COLUMN_ICON); + else if (icon_gtype == CAIRO_GOBJECT_TYPE_SURFACE) + gtk_cell_layout_add_attribute (layout, priv->pixbuf_cell, + "surface", GD_MAIN_COLUMN_ICON); + else + g_assert_not_reached (); + + gtk_cell_layout_add_attribute (layout, priv->text_cell, + "text", GD_MAIN_COLUMN_PRIMARY_TEXT); + gtk_cell_layout_add_attribute (layout, priv->text_cell, + "line-two", GD_MAIN_COLUMN_SECONDARY_TEXT); +} + +static void +gd_main_icon_view_drag_data_get (GtkWidget *widget, + GdkDragContext *drag_context, + GtkSelectionData *data, + guint info, + guint time) +{ + GdMainIconView *self = GD_MAIN_ICON_VIEW (widget); + GdMainIconViewPrivate *priv; + GtkTreeModel *model = gtk_icon_view_get_model (GTK_ICON_VIEW (self)); + + priv = gd_main_icon_view_get_instance_private (self); + + if (info != 0) + return; + + _gd_main_view_generic_dnd_common (model, priv->selection_mode, + get_source_row (drag_context), data); + + GTK_WIDGET_CLASS (gd_main_icon_view_parent_class)->drag_data_get (widget, drag_context, + data, info, time); +} + +static void +gd_main_icon_view_constructed (GObject *obj) +{ + GdMainIconView *self = GD_MAIN_ICON_VIEW (obj); + GdMainIconViewPrivate *priv; + GtkCellRenderer *cell; + const GtkTargetEntry targets[] = { + { (char *) "text/uri-list", GTK_TARGET_OTHER_APP, 0 } + }; + + priv = gd_main_icon_view_get_instance_private (self); + + G_OBJECT_CLASS (gd_main_icon_view_parent_class)->constructed (obj); + + gtk_widget_set_hexpand (GTK_WIDGET (self), TRUE); + gtk_widget_set_vexpand (GTK_WIDGET (self), TRUE); + gtk_icon_view_set_selection_mode (GTK_ICON_VIEW (self), GTK_SELECTION_NONE); + + g_object_set (self, + "column-spacing", VIEW_COLUMN_SPACING, + "margin", VIEW_MARGIN, + NULL); + + priv->pixbuf_cell = cell = gd_toggle_pixbuf_renderer_new (); + g_object_set (cell, + "xalign", 0.5, + "yalign", 0.5, + NULL); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (self), cell, FALSE); + + priv->text_cell = cell = gd_two_lines_renderer_new (); + g_object_set (cell, + "xalign", 0.5, + "yalign", 0.0, + "alignment", PANGO_ALIGN_CENTER, + "wrap-mode", PANGO_WRAP_WORD_CHAR, + "wrap-width", VIEW_ITEM_WRAP_WIDTH, + "text-lines", 3, + NULL); + gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (self), cell, FALSE); + + set_attributes_from_model (self); + + gtk_icon_view_enable_model_drag_source (GTK_ICON_VIEW (self), + GDK_BUTTON1_MASK, + targets, 1, + GDK_ACTION_COPY); +} + +static void +path_from_line_rects (cairo_t *cr, + GdkRectangle *lines, + int n_lines) +{ + int start_line, end_line; + GdkRectangle *r; + int i; + + /* Join rows vertically by extending to the middle */ + for (i = 0; i < n_lines - 1; i++) + { + GdkRectangle *r1 = &lines[i]; + GdkRectangle *r2 = &lines[i+1]; + int gap = r2->y - (r1->y + r1->height); + int old_y; + + r1->height += gap / 2; + old_y = r2->y; + r2->y = r1->y + r1->height; + r2->height += old_y - r2->y; + } + + cairo_new_path (cr); + start_line = 0; + + do + { + for (i = start_line; i < n_lines; i++) + { + r = &lines[i]; + if (i == start_line) + cairo_move_to (cr, r->x + r->width, r->y); + else + cairo_line_to (cr, r->x + r->width, r->y); + cairo_line_to (cr, r->x + r->width, r->y + r->height); + + if (i < n_lines - 1 && + (r->x + r->width < lines[i+1].x || + r->x > lines[i+1].x + lines[i+1].width)) + { + i++; + break; + } + } + end_line = i; + for (i = end_line - 1; i >= start_line; i--) + { + r = &lines[i]; + cairo_line_to (cr, r->x, r->y + r->height); + cairo_line_to (cr, r->x, r->y); + } + cairo_close_path (cr); + start_line = end_line; + } + while (end_line < n_lines); +} + +static gboolean +gd_main_icon_view_draw (GtkWidget *widget, + cairo_t *cr) +{ + GdMainIconView *self = GD_MAIN_ICON_VIEW (widget); + GtkAllocation allocation; + GtkStyleContext *context; + GdkRectangle line_rect; + GdkRectangle rect; + GtkTreePath *path; + GArray *lines; + GtkTreePath *rubberband_start, *rubberband_end; + + GTK_WIDGET_CLASS (gd_main_icon_view_parent_class)->draw (widget, cr); + + _gd_main_view_generic_get_rubberband_range (GD_MAIN_VIEW_GENERIC (self), + &rubberband_start, &rubberband_end); + + if (rubberband_start) + { + cairo_save (cr); + + context = gtk_widget_get_style_context (widget); + + gtk_style_context_save (context); + gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND); + + path = gtk_tree_path_copy (rubberband_start); + + line_rect.width = 0; + lines = g_array_new (FALSE, FALSE, sizeof (GdkRectangle)); + + while (gtk_tree_path_compare (path, rubberband_end) <= 0) + { + if (gtk_icon_view_get_cell_rect (GTK_ICON_VIEW (widget), + path, + NULL, &rect)) + { + if (line_rect.width == 0) + line_rect = rect; + else + { + if (rect.y == line_rect.y) + gdk_rectangle_union (&rect, &line_rect, &line_rect); + else + { + g_array_append_val (lines, line_rect); + line_rect = rect; + } + } + } + gtk_tree_path_next (path); + } + + if (line_rect.width != 0) + g_array_append_val (lines, line_rect); + + if (lines->len > 0) + { + GtkStateFlags state; + cairo_path_t *path; + GtkBorder border; + GdkRGBA border_color; + + path_from_line_rects (cr, (GdkRectangle *)lines->data, lines->len); + + /* For some reason we need to copy and reapply the path, or it gets + eaten by gtk_render_background() */ + path = cairo_copy_path (cr); + + cairo_save (cr); + cairo_clip (cr); + gtk_widget_get_allocation (widget, &allocation); + gtk_render_background (context, cr, + 0, 0, + allocation.width, allocation.height); + cairo_restore (cr); + + cairo_append_path (cr, path); + cairo_path_destroy (path); + + state = gtk_widget_get_state_flags (widget); + + G_GNUC_BEGIN_IGNORE_DEPRECATIONS; + gtk_style_context_get_border_color (context, + state, + &border_color); + G_GNUC_END_IGNORE_DEPRECATIONS; + + gtk_style_context_get_border (context, state, + &border); + + cairo_set_line_width (cr, border.left); + gdk_cairo_set_source_rgba (cr, &border_color); + cairo_stroke (cr); + } + g_array_free (lines, TRUE); + + gtk_tree_path_free (path); + + gtk_style_context_restore (context); + cairo_restore (cr); + } + + return FALSE; +} + +static void +gd_main_icon_view_class_init (GdMainIconViewClass *klass) +{ + GObjectClass *oclass = G_OBJECT_CLASS (klass); + GtkWidgetClass *wclass = GTK_WIDGET_CLASS (klass); + GtkBindingSet *binding_set; + GdkModifierType activate_modifiers[] = { GDK_SHIFT_MASK, GDK_CONTROL_MASK, GDK_SHIFT_MASK | GDK_CONTROL_MASK }; + guint i; + + binding_set = gtk_binding_set_by_class (klass); + + oclass->constructed = gd_main_icon_view_constructed; + wclass->drag_data_get = gd_main_icon_view_drag_data_get; + wclass->draw = gd_main_icon_view_draw; + + gtk_widget_class_install_style_property (wclass, + g_param_spec_int ("check-icon-size", + "Check icon size", + "Check icon size", + -1, G_MAXINT, 40, + G_PARAM_READWRITE)); + + for (i = 0; i < G_N_ELEMENTS (activate_modifiers); i++) + { + gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, activate_modifiers[i], + "activate-cursor-item", 0); + gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, activate_modifiers[i], + "activate-cursor-item", 0); + gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, activate_modifiers[i], + "activate-cursor-item", 0); + gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, activate_modifiers[i], + "activate-cursor-item", 0); + gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, activate_modifiers[i], + "activate-cursor-item", 0); + } +} + +static void +gd_main_icon_view_init (GdMainIconView *self) +{ + g_signal_connect (self, "notify::model", + G_CALLBACK (set_attributes_from_model), NULL); +} + +static GtkTreePath * +gd_main_icon_view_get_path_at_pos (GdMainViewGeneric *mv, + gint x, + gint y) +{ + return gtk_icon_view_get_path_at_pos (GTK_ICON_VIEW (mv), x, y); +} + +static void +gd_main_icon_view_set_selection_mode (GdMainViewGeneric *mv, + gboolean selection_mode) +{ + GdMainIconView *self = GD_MAIN_ICON_VIEW (mv); + GdMainIconViewPrivate *priv; + + priv = gd_main_icon_view_get_instance_private (self); + + priv->selection_mode = selection_mode; + + g_object_set (priv->pixbuf_cell, + "toggle-visible", selection_mode, + NULL); + gtk_widget_queue_draw (GTK_WIDGET (self)); +} + +static void +gd_main_icon_view_scroll_to_path (GdMainViewGeneric *mv, + GtkTreePath *path) +{ + gtk_icon_view_scroll_to_path (GTK_ICON_VIEW (mv), path, TRUE, 0.5, 0.5); +} + +static void +gd_main_icon_view_set_model (GdMainViewGeneric *mv, + GtkTreeModel *model) +{ + gtk_icon_view_set_model (GTK_ICON_VIEW (mv), model); +} + +static GtkTreeModel * +gd_main_icon_view_get_model (GdMainViewGeneric *mv) +{ + return gtk_icon_view_get_model (GTK_ICON_VIEW (mv)); +} + +static void +gd_main_view_generic_iface_init (GdMainViewGenericIface *iface) +{ + iface->set_model = gd_main_icon_view_set_model; + iface->get_model = gd_main_icon_view_get_model; + iface->get_path_at_pos = gd_main_icon_view_get_path_at_pos; + iface->scroll_to_path = gd_main_icon_view_scroll_to_path; + iface->set_selection_mode = gd_main_icon_view_set_selection_mode; +} + +GtkWidget * +gd_main_icon_view_new (void) +{ + return g_object_new (GD_TYPE_MAIN_ICON_VIEW, NULL); +} |