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diff --git a/src/CheckerboardItem.vala b/src/CheckerboardItem.vala
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+/* Copyright 2016 Software Freedom Conservancy Inc.
+ *
+ * This software is licensed under the GNU LGPL (version 2.1 or later).
+ * See the COPYING file in this distribution.
+ */
+
+public abstract class CheckerboardItem : ThumbnailView {
+ // Collection properties CheckerboardItem understands
+ // SHOW_TITLES (bool)
+ public const string PROP_SHOW_TITLES = "show-titles";
+ // SHOW_COMMENTS (bool)
+ public const string PROP_SHOW_COMMENTS = "show-comments";
+ // SHOW_SUBTITLES (bool)
+ public const string PROP_SHOW_SUBTITLES = "show-subtitles";
+
+ public const int FRAME_WIDTH = 8;
+ public const int LABEL_PADDING = 4;
+ public const int BORDER_WIDTH = 1;
+
+ public const int SHADOW_RADIUS = 4;
+ public const float SHADOW_INITIAL_ALPHA = 0.5f;
+
+ public const int TRINKET_SCALE = 12;
+ public const int TRINKET_PADDING = 1;
+
+ public const int BRIGHTEN_SHIFT = 0x18;
+
+ public Dimensions requisition = Dimensions();
+ public Gdk.Rectangle allocation = Gdk.Rectangle();
+
+ private bool exposure = false;
+ private CheckerboardItemText? title = null;
+ private bool title_visible = true;
+ private CheckerboardItemText? comment = null;
+ private bool comment_visible = true;
+ private CheckerboardItemText? subtitle = null;
+ private bool subtitle_visible = false;
+ private bool is_cursor = false;
+ private Pango.Alignment tag_alignment = Pango.Alignment.LEFT;
+ private Gee.List<Tag>? user_visible_tag_list = null;
+ private Gee.Collection<Tag> tags;
+ private Gdk.Pixbuf pixbuf = null;
+ private Gdk.Pixbuf display_pixbuf = null;
+ private Gdk.Pixbuf brightened = null;
+ private Dimensions pixbuf_dim = Dimensions();
+ private int col = -1;
+ private int row = -1;
+ private int horizontal_trinket_offset = 0;
+
+ protected CheckerboardItem(ThumbnailSource source, Dimensions initial_pixbuf_dim, string title, string? comment,
+ bool marked_up = false, Pango.Alignment alignment = Pango.Alignment.LEFT) {
+ base(source);
+
+ pixbuf_dim = initial_pixbuf_dim;
+ this.title = new CheckerboardItemText(title, alignment, marked_up);
+ // on the checkboard page we display the comment in
+ // one line, i.e., replacing all newlines with spaces.
+ // that means that the display will contain "..." if the comment
+ // is too long.
+ // warning: changes here have to be done in set_comment, too!
+ if (comment != null)
+ this.comment = new CheckerboardItemText(comment.replace("\n", " "), alignment,
+ marked_up);
+
+ // Don't calculate size here, wait for the item to be assigned to a ViewCollection
+ // (notify_membership_changed) and calculate when the collection's property settings
+ // are known
+ }
+
+ public bool has_tags { get; private set; }
+
+ public override string get_name() {
+ return (title != null) ? title.get_text() : base.get_name();
+ }
+
+ public string get_title() {
+ return (title != null) ? title.get_text() : "";
+ }
+
+ public string get_comment() {
+ return (comment != null) ? comment.get_text() : "";
+ }
+
+ public void set_title(string text, bool marked_up = false,
+ Pango.Alignment alignment = Pango.Alignment.LEFT) {
+ if (title != null && title.is_set_to(text, marked_up, alignment))
+ return;
+
+ title = new CheckerboardItemText(text, alignment, marked_up);
+
+ if (title_visible) {
+ recalc_size("set_title");
+ notify_view_altered();
+ }
+ }
+
+ public void translate_coordinates(ref int x, ref int y) {
+ x -= allocation.x + FRAME_WIDTH;
+ y -= allocation.y + FRAME_WIDTH;
+ }
+
+ public void clear_title() {
+ if (title == null)
+ return;
+
+ title = null;
+
+ if (title_visible) {
+ recalc_size("clear_title");
+ notify_view_altered();
+ }
+ }
+
+ private void set_title_visible(bool visible) {
+ if (title_visible == visible)
+ return;
+
+ title_visible = visible;
+
+ recalc_size("set_title_visible");
+ notify_view_altered();
+ }
+
+ public void set_comment(string text, bool marked_up = false,
+ Pango.Alignment alignment = Pango.Alignment.LEFT) {
+ if (comment != null && comment.is_set_to(text, marked_up, alignment))
+ return;
+
+ comment = new CheckerboardItemText(text.replace("\n", " "), alignment, marked_up);
+
+ if (comment_visible) {
+ recalc_size("set_comment");
+ notify_view_altered();
+ }
+ }
+
+ public void clear_comment() {
+ if (comment == null)
+ return;
+
+ comment = null;
+
+ if (comment_visible) {
+ recalc_size("clear_comment");
+ notify_view_altered();
+ }
+ }
+
+ private void set_comment_visible(bool visible) {
+ if (comment_visible == visible)
+ return;
+
+ comment_visible = visible;
+
+ recalc_size("set_comment_visible");
+ notify_view_altered();
+ }
+
+ public void set_tags(Gee.Collection<Tag>? tags,
+ Pango.Alignment alignment = Pango.Alignment.LEFT) {
+ has_tags = (tags != null && tags.size > 0);
+ tag_alignment = alignment;
+ string text;
+ if (has_tags) {
+ this.tags = tags;
+ user_visible_tag_list = Tag.make_user_visible_tag_list(tags);
+ text = Tag.make_tag_markup_string(user_visible_tag_list);
+ } else {
+ text = "<small>.</small>";
+ }
+
+ if (subtitle != null && subtitle.is_set_to(text, true, alignment))
+ return;
+ subtitle = new CheckerboardItemText(text, alignment, true);
+
+ if (subtitle_visible) {
+ recalc_size("set_subtitle");
+ notify_view_altered();
+ }
+ }
+
+ public void clear_tags() {
+ clear_subtitle();
+ has_tags = false;
+ user_visible_tag_list = null;
+ }
+
+ public void highlight_user_visible_tag(int index)
+ requires (user_visible_tag_list != null) {
+ string text = Tag.make_tag_markup_string(user_visible_tag_list, index);
+ subtitle = new CheckerboardItemText(text, tag_alignment, true);
+
+ if (subtitle_visible)
+ notify_view_altered();
+ }
+
+ public Tag get_user_visible_tag(int index)
+ requires (index >= 0 && index < user_visible_tag_list.size) {
+ return user_visible_tag_list.get(index);
+ }
+
+ public Pango.Layout? get_tag_list_layout() {
+ return has_tags ? subtitle.get_pango_layout() : null;
+ }
+
+ public Gdk.Rectangle get_subtitle_allocation() {
+ return subtitle.allocation;
+ }
+
+ public string get_subtitle() {
+ return (subtitle != null) ? subtitle.get_text() : "";
+ }
+
+ public void set_subtitle(string text, bool marked_up = false,
+ Pango.Alignment alignment = Pango.Alignment.LEFT) {
+ if (subtitle != null && subtitle.is_set_to(text, marked_up, alignment))
+ return;
+
+ subtitle = new CheckerboardItemText(text, alignment, marked_up);
+
+ if (subtitle_visible) {
+ recalc_size("set_subtitle");
+ notify_view_altered();
+ }
+ }
+
+ public void clear_subtitle() {
+ if (subtitle == null)
+ return;
+
+ subtitle = null;
+
+ if (subtitle_visible) {
+ recalc_size("clear_subtitle");
+ notify_view_altered();
+ }
+ }
+
+ private void set_subtitle_visible(bool visible) {
+ if (subtitle_visible == visible)
+ return;
+
+ subtitle_visible = visible;
+
+ recalc_size("set_subtitle_visible");
+ notify_view_altered();
+ }
+
+ public void set_is_cursor(bool is_cursor) {
+ this.is_cursor = is_cursor;
+ }
+
+ public bool get_is_cursor() {
+ return is_cursor;
+ }
+
+ public virtual void handle_mouse_motion(int x, int y, int height, int width) {
+
+ }
+
+ public virtual void handle_mouse_leave() {
+ unbrighten();
+ }
+
+ public virtual void handle_mouse_enter() {
+ brighten();
+ }
+
+ protected override void notify_membership_changed(DataCollection? collection) {
+ bool title_visible = (bool) get_collection_property(PROP_SHOW_TITLES, true);
+ bool comment_visible = (bool) get_collection_property(PROP_SHOW_COMMENTS, true);
+ bool subtitle_visible = (bool) get_collection_property(PROP_SHOW_SUBTITLES, false);
+
+ bool altered = false;
+ if (this.title_visible != title_visible) {
+ this.title_visible = title_visible;
+ altered = true;
+ }
+
+ if (this.comment_visible != comment_visible) {
+ this.comment_visible = comment_visible;
+ altered = true;
+ }
+
+ if (this.subtitle_visible != subtitle_visible) {
+ this.subtitle_visible = subtitle_visible;
+ altered = true;
+ }
+
+ if (altered || !requisition.has_area()) {
+ recalc_size("notify_membership_changed");
+ notify_view_altered();
+ }
+
+ base.notify_membership_changed(collection);
+ }
+
+ protected override void notify_collection_property_set(string name, Value? old, Value val) {
+ switch (name) {
+ case PROP_SHOW_TITLES:
+ set_title_visible((bool) val);
+ break;
+
+ case PROP_SHOW_COMMENTS:
+ set_comment_visible((bool) val);
+ break;
+
+ case PROP_SHOW_SUBTITLES:
+ set_subtitle_visible((bool) val);
+ break;
+ }
+
+ base.notify_collection_property_set(name, old, val);
+ }
+
+ // The alignment point is the coordinate on the y-axis (relative to the top of the
+ // CheckerboardItem) which this item should be aligned to. This allows for
+ // bottom-alignment along the bottom edge of the thumbnail.
+ public int get_alignment_point() {
+ return FRAME_WIDTH + BORDER_WIDTH + pixbuf_dim.height;
+ }
+
+ public virtual void exposed() {
+ exposure = true;
+ }
+
+ public virtual void unexposed() {
+ exposure = false;
+
+ if (title != null)
+ title.clear_pango_layout();
+
+ if (comment != null)
+ comment.clear_pango_layout();
+
+ if (subtitle != null)
+ subtitle.clear_pango_layout();
+ }
+
+ public virtual bool is_exposed() {
+ return exposure;
+ }
+
+ public bool has_image() {
+ return pixbuf != null;
+ }
+
+ public Gdk.Pixbuf? get_image() {
+ return pixbuf;
+ }
+
+ public void set_image(Gdk.Pixbuf pixbuf) {
+ this.pixbuf = pixbuf;
+ display_pixbuf = pixbuf;
+ pixbuf_dim = Dimensions.for_pixbuf(pixbuf);
+
+ recalc_size("set_image");
+ notify_view_altered();
+ }
+
+ public void clear_image(Dimensions dim) {
+ bool had_image = pixbuf != null;
+
+ pixbuf = null;
+ display_pixbuf = null;
+ pixbuf_dim = dim;
+
+ recalc_size("clear_image");
+
+ if (had_image)
+ notify_view_altered();
+ }
+
+ public static int get_max_width(int scale) {
+ // width is frame width (two sides) + frame padding (two sides) + width of pixbuf (text
+ // never wider)
+ return (FRAME_WIDTH * 2) + scale;
+ }
+
+ private void recalc_size(string reason) {
+ Dimensions old_requisition = requisition;
+
+ // only add in the text heights if they're displayed
+ int title_height = (title != null && title_visible)
+ ? title.get_height() + LABEL_PADDING : 0;
+ int comment_height = (comment != null && comment_visible)
+ ? comment.get_height() + LABEL_PADDING : 0;
+ int subtitle_height = (subtitle != null && subtitle_visible)
+ ? subtitle.get_height() + LABEL_PADDING : 0;
+
+ // width is frame width (two sides) + frame padding (two sides) + width of pixbuf
+ // (text never wider)
+ requisition.width = (FRAME_WIDTH * 2) + (BORDER_WIDTH * 2) + pixbuf_dim.width;
+
+ // height is frame width (two sides) + frame padding (two sides) + height of pixbuf
+ // + height of text + label padding (between pixbuf and text)
+ requisition.height = (FRAME_WIDTH * 2) + (BORDER_WIDTH * 2)
+ + pixbuf_dim.height + title_height + comment_height + subtitle_height;
+
+#if TRACE_REFLOW_ITEMS
+ debug("recalc_size %s: %s title_height=%d comment_height=%d subtitle_height=%d requisition=%s",
+ get_source().get_name(), reason, title_height, comment_height, subtitle_height,
+ requisition.to_string());
+#endif
+
+ if (!requisition.approx_equals(old_requisition)) {
+#if TRACE_REFLOW_ITEMS
+ debug("recalc_size %s: %s notifying geometry altered", get_source().get_name(), reason);
+#endif
+ notify_geometry_altered();
+ }
+ }
+
+ protected static Dimensions get_border_dimensions(Dimensions object_dim, int border_width) {
+ Dimensions dimensions = Dimensions();
+ dimensions.width = object_dim.width + (border_width * 2);
+ dimensions.height = object_dim.height + (border_width * 2);
+ return dimensions;
+ }
+
+ protected static Gdk.Point get_border_origin(Gdk.Point object_origin, int border_width) {
+ Gdk.Point origin = Gdk.Point();
+ origin.x = object_origin.x - border_width;
+ origin.y = object_origin.y - border_width;
+ return origin;
+ }
+
+ protected virtual void paint_shadow(Cairo.Context ctx, Dimensions dimensions, Gdk.Point origin,
+ int radius, float initial_alpha) {
+ double rgb_all = 0.0;
+
+ // top right corner
+ paint_shadow_in_corner(ctx, origin.x + dimensions.width, origin.y + radius, rgb_all, radius,
+ initial_alpha, -0.5 * Math.PI, 0);
+ // bottom right corner
+ paint_shadow_in_corner(ctx, origin.x + dimensions.width, origin.y + dimensions.height, rgb_all,
+ radius, initial_alpha, 0, 0.5 * Math.PI);
+ // bottom left corner
+ paint_shadow_in_corner(ctx, origin.x + radius, origin.y + dimensions.height, rgb_all, radius,
+ initial_alpha, 0.5 * Math.PI, Math.PI);
+
+ // left right
+ Cairo.Pattern lr = new Cairo.Pattern.linear(0, origin.y + dimensions.height,
+ 0, origin.y + dimensions.height + radius);
+ lr.add_color_stop_rgba(0.0, rgb_all, rgb_all, rgb_all, initial_alpha);
+ lr.add_color_stop_rgba(1.0, rgb_all, rgb_all, rgb_all, 0.0);
+ ctx.set_source(lr);
+ ctx.rectangle(origin.x + radius, origin.y + dimensions.height, dimensions.width - radius, radius);
+ ctx.fill();
+
+ // top down
+ Cairo.Pattern td = new Cairo.Pattern.linear(origin.x + dimensions.width,
+ 0, origin.x + dimensions.width + radius, 0);
+ td.add_color_stop_rgba(0.0, rgb_all, rgb_all, rgb_all, initial_alpha);
+ td.add_color_stop_rgba(1.0, rgb_all, rgb_all, rgb_all, 0.0);
+ ctx.set_source(td);
+ ctx.rectangle(origin.x + dimensions.width, origin.y + radius,
+ radius, dimensions.height - radius);
+ ctx.fill();
+ }
+
+ protected void paint_shadow_in_corner(Cairo.Context ctx, int x, int y,
+ double rgb_all, float radius, float initial_alpha, double arc1, double arc2) {
+ Cairo.Pattern p = new Cairo.Pattern.radial(x, y, 0, x, y, radius);
+ p.add_color_stop_rgba(0.0, rgb_all, rgb_all, rgb_all, initial_alpha);
+ p.add_color_stop_rgba(1.0, rgb_all, rgb_all, rgb_all, 0);
+ ctx.set_source(p);
+ ctx.move_to(x, y);
+ ctx.arc(x, y, radius, arc1, arc2);
+ ctx.close_path();
+ ctx.fill();
+ }
+
+ protected virtual void paint_border(Cairo.Context ctx, Dimensions object_dimensions,
+ Gdk.Point object_origin, int border_width) {
+ if (border_width == 1) {
+ ctx.rectangle(object_origin.x - border_width, object_origin.y - border_width,
+ object_dimensions.width + (border_width * 2),
+ object_dimensions.height + (border_width * 2));
+ ctx.fill();
+ } else {
+ Dimensions dimensions = get_border_dimensions(object_dimensions, border_width);
+ Gdk.Point origin = get_border_origin(object_origin, border_width);
+
+ // amount of rounding needed on corners varies by size of object
+ double scale = int.max(object_dimensions.width, object_dimensions.height);
+ draw_rounded_corners_filled(ctx, dimensions, origin, 0.25 * scale);
+ }
+ }
+
+ protected virtual void paint_image(Cairo.Context ctx, Gdk.Pixbuf pixbuf, Gdk.Point origin) {
+ paint_pixmap_with_background(ctx, pixbuf, origin.x, origin.y);
+ }
+
+ private int get_selection_border_width(int scale) {
+ return ((scale <= ((Thumbnail.MIN_SCALE + Thumbnail.MAX_SCALE) / 3)) ? 5 : 4)
+ + BORDER_WIDTH;
+ }
+
+ protected virtual Gdk.Pixbuf? get_top_left_trinket(int scale) {
+ return null;
+ }
+
+ protected virtual Gdk.Pixbuf? get_top_right_trinket(int scale) {
+ return null;
+ }
+
+ protected virtual Gdk.Pixbuf? get_bottom_left_trinket(int scale) {
+ return null;
+ }
+
+ protected virtual Gdk.Pixbuf? get_bottom_right_trinket(int scale) {
+ return null;
+ }
+
+ public void paint(Gtk.StyleContext style_context, Cairo.Context ctx, Gdk.RGBA bg_color, Gdk.RGBA selected_color,
+ Gdk.RGBA? border_color, Gdk.RGBA? focus_color) {
+ ctx.save();
+ ctx.translate(allocation.x + FRAME_WIDTH,
+ allocation.y + FRAME_WIDTH);
+ // calc the top-left point of the pixbuf
+ Gdk.Point pixbuf_origin = Gdk.Point();
+ pixbuf_origin.x = BORDER_WIDTH;
+ pixbuf_origin.y = BORDER_WIDTH;
+
+ ctx.set_line_width(FRAME_WIDTH);
+ ctx.set_source_rgba(selected_color.red, selected_color.green, selected_color.blue,
+ selected_color.alpha);
+
+ // draw shadow
+ if (border_color != null) {
+ ctx.save();
+ Dimensions shadow_dim = Dimensions();
+ shadow_dim.width = pixbuf_dim.width + BORDER_WIDTH;
+ shadow_dim.height = pixbuf_dim.height + BORDER_WIDTH;
+ paint_shadow(ctx, shadow_dim, pixbuf_origin, SHADOW_RADIUS, SHADOW_INITIAL_ALPHA);
+ ctx.restore();
+ }
+
+ // draw a border for the cursor with the selection width and normal border color
+ if (is_cursor) {
+ ctx.save();
+ ctx.set_source_rgba(focus_color.red, focus_color.green, focus_color.blue,
+ focus_color.alpha);
+ paint_border(ctx, pixbuf_dim, pixbuf_origin,
+ get_selection_border_width(int.max(pixbuf_dim.width, pixbuf_dim.height)));
+ ctx.restore();
+ }
+
+ // draw selection border
+ if (is_selected()) {
+ // border thickness depends on the size of the thumbnail
+ ctx.save();
+ paint_border(ctx, pixbuf_dim, pixbuf_origin,
+ get_selection_border_width(int.max(pixbuf_dim.width, pixbuf_dim.height)));
+ ctx.restore();
+ }
+
+ if (display_pixbuf != null) {
+ ctx.save();
+ ctx.set_source_rgba(bg_color.red, bg_color.green, bg_color.blue, bg_color.alpha);
+ paint_image(ctx, display_pixbuf, pixbuf_origin);
+ ctx.restore();
+ }
+
+ // title and subtitles are LABEL_PADDING below bottom of pixbuf
+ int text_y = pixbuf_dim.height + FRAME_WIDTH + LABEL_PADDING;
+ if (title != null && title_visible) {
+ // get the layout sized so its width is no more than the pixbuf's
+ // resize the text width to be no more than the pixbuf's
+ title.allocation.x = 0;
+ title.allocation.y = text_y;
+ title.allocation.width = pixbuf_dim.width;
+ title.allocation.height = title.get_height();
+ style_context.render_layout(ctx, title.allocation.x, title.allocation.y,
+ title.get_pango_layout(pixbuf_dim.width));
+
+ text_y += title.get_height() + LABEL_PADDING;
+ }
+
+ if (comment != null && comment_visible) {
+ comment.allocation.x = 0;
+ comment.allocation.y = text_y;
+ comment.allocation.width = pixbuf_dim.width;
+ comment.allocation.height = comment.get_height();
+ style_context.render_layout(ctx, comment.allocation.x, comment.allocation.y,
+ comment.get_pango_layout(pixbuf_dim.width));
+
+ text_y += comment.get_height() + LABEL_PADDING;
+ }
+
+ if (subtitle != null && subtitle_visible) {
+ subtitle.allocation.x = 0;
+ subtitle.allocation.y = text_y;
+ subtitle.allocation.width = pixbuf_dim.width;
+ subtitle.allocation.height = subtitle.get_height();
+
+ style_context.render_layout(ctx, subtitle.allocation.x, subtitle.allocation.y,
+ subtitle.get_pango_layout(pixbuf_dim.width));
+
+ // increment text_y if more text lines follow
+ }
+
+ ctx.set_source_rgba(selected_color.red, selected_color.green, selected_color.blue,
+ selected_color.alpha);
+
+ // draw trinkets last
+ Gdk.Pixbuf? trinket = get_bottom_left_trinket(TRINKET_SCALE);
+ if (trinket != null) {
+ int x = pixbuf_origin.x + TRINKET_PADDING + get_horizontal_trinket_offset();
+ int y = pixbuf_origin.y + pixbuf_dim.height - trinket.get_height() -
+ TRINKET_PADDING;
+ Gdk.cairo_set_source_pixbuf(ctx, trinket, x, y);
+ ctx.rectangle(x, y, trinket.get_width(), trinket.get_height());
+ ctx.fill();
+ }
+
+ trinket = get_top_left_trinket(TRINKET_SCALE);
+ if (trinket != null) {
+ int x = pixbuf_origin.x + TRINKET_PADDING + get_horizontal_trinket_offset();
+ int y = pixbuf_origin.y + TRINKET_PADDING;
+ Gdk.cairo_set_source_pixbuf(ctx, trinket, x, y);
+ ctx.rectangle(x, y, trinket.get_width(), trinket.get_height());
+ ctx.fill();
+ }
+
+ trinket = get_top_right_trinket(TRINKET_SCALE);
+ if (trinket != null) {
+ int x = pixbuf_origin.x + pixbuf_dim.width - trinket.width -
+ get_horizontal_trinket_offset() - TRINKET_PADDING;
+ int y = pixbuf_origin.y + TRINKET_PADDING;
+ Gdk.cairo_set_source_pixbuf(ctx, trinket, x, y);
+ ctx.rectangle(x, y, trinket.get_width(), trinket.get_height());
+ ctx.fill();
+ }
+
+ trinket = get_bottom_right_trinket(TRINKET_SCALE);
+ if (trinket != null) {
+ int x = pixbuf_origin.x + pixbuf_dim.width - trinket.width -
+ get_horizontal_trinket_offset() - TRINKET_PADDING;
+ int y = pixbuf_origin.y + pixbuf_dim.height - trinket.height -
+ TRINKET_PADDING;
+ Gdk.cairo_set_source_pixbuf(ctx, trinket, x, y);
+ ctx.rectangle(x, y, trinket.get_width(), trinket.get_height());
+ ctx.fill();
+ }
+ ctx.restore();
+ }
+
+ protected void set_horizontal_trinket_offset(int horizontal_trinket_offset) {
+ assert(horizontal_trinket_offset >= 0);
+ this.horizontal_trinket_offset = horizontal_trinket_offset;
+ }
+
+ protected int get_horizontal_trinket_offset() {
+ return horizontal_trinket_offset;
+ }
+
+ public void set_grid_coordinates(int col, int row) {
+ this.col = col;
+ this.row = row;
+ }
+
+ public int get_column() {
+ return col;
+ }
+
+ public int get_row() {
+ return row;
+ }
+
+ public void brighten() {
+ // "should" implies "can" and "didn't already"
+ if (brightened != null || pixbuf == null)
+ return;
+
+ // create a new lightened pixbuf to display
+ brightened = pixbuf.copy();
+ shift_colors(brightened, BRIGHTEN_SHIFT, BRIGHTEN_SHIFT, BRIGHTEN_SHIFT, 0);
+
+ display_pixbuf = brightened;
+
+ notify_view_altered();
+ }
+
+
+ public void unbrighten() {
+ // "should", "can", "didn't already"
+ if (brightened == null || pixbuf == null)
+ return;
+
+ brightened = null;
+
+ // return to the normal image
+ display_pixbuf = pixbuf;
+
+ notify_view_altered();
+ }
+
+ public override void visibility_changed(bool visible) {
+ // if going from visible to hidden, unbrighten
+ if (!visible)
+ unbrighten();
+
+ base.visibility_changed(visible);
+ }
+
+ private bool query_tooltip_on_text(CheckerboardItemText text, Gtk.Tooltip tooltip) {
+ if (!text.get_pango_layout().is_ellipsized())
+ return false;
+
+ if (text.is_marked_up())
+ tooltip.set_markup(text.get_text());
+ else
+ tooltip.set_text(text.get_text());
+
+ return true;
+ }
+
+ public bool query_tooltip(int x, int y, Gtk.Tooltip tooltip) {
+ if (title != null && title_visible && coord_in_rectangle(x, y, title.allocation))
+ return query_tooltip_on_text(title, tooltip);
+
+ if (comment != null && comment_visible && coord_in_rectangle(x, y, comment.allocation))
+ return query_tooltip_on_text(comment, tooltip);
+
+ if (subtitle != null && subtitle_visible && coord_in_rectangle(x, y, subtitle.allocation))
+ return query_tooltip_on_text(subtitle, tooltip);
+
+ return false;
+ }
+}
+
+