/* GTK - The GIMP Toolkit * Copyright © 2013 Carlos Garnacho * * This library 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 library 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 library. If not, see . */ /** * SECTION:gtkpopover * @Short_description: Context dependent bubbles * @Title: GtkPopover * * GtkPopover is a bubble-like context window, primarily meant to * provide context-dependent information or options. Popovers are * attached to a widget, passed at construction time on gtk_popover_new(), * or updated afterwards through gtk_popover_set_relative_to(), by * default they will point to the whole widget area, although this * behavior can be changed through gtk_popover_set_pointing_to(). * * The position of a popover relative to the widget it is attached to * can also be changed through gtk_popover_set_position(). * * By default, #GtkPopover performs a GTK+ grab, in order to ensure * input events get redirected to it while it is shown, and also so * the popover is dismissed in the expected situations (clicks outside * the popover, or the Esc key being pressed). If no such modal behavior * is desired on a popover, gtk_popover_set_modal() may be called on it * to tweak its behavior. * * Since: 3.12 */ #include "config.h" #include #include #include "gtkpopover.h" #include "gtktypebuiltins.h" #include "gtkmain.h" #include "gtkwindowprivate.h" #include "gtkscrollable.h" #include "gtkadjustment.h" #include "gtkprivate.h" #include "gtkintl.h" #define TAIL_GAP_WIDTH 24 #define TAIL_HEIGHT 12 #define POS_IS_VERTICAL(p) ((p) == GTK_POS_TOP || (p) == GTK_POS_BOTTOM) typedef struct _GtkPopoverPrivate GtkPopoverPrivate; enum { PROP_RELATIVE_TO = 1, PROP_POINTING_TO, PROP_POSITION, PROP_MODAL }; enum { CLOSED, N_SIGNALS }; struct _GtkPopoverPrivate { GtkWidget *widget; GtkWindow *window; GtkWidget *prev_focus_widget; GtkScrollable *parent_scrollable; GtkAdjustment *vadj; GtkAdjustment *hadj; cairo_rectangle_int_t pointing_to; guint hierarchy_changed_id; guint size_allocate_id; guint unmap_id; guint scrollable_notify_id; guint has_pointing_to : 1; guint preferred_position : 2; guint final_position : 2; guint current_position : 2; guint modal : 1; guint button_pressed : 1; guint apply_shape : 1; }; static GQuark quark_widget_popovers = 0; static guint signals[N_SIGNALS] = { 0 }; static void gtk_popover_update_position (GtkPopover *popover); static void gtk_popover_update_relative_to (GtkPopover *popover, GtkWidget *relative_to); G_DEFINE_TYPE_WITH_PRIVATE (GtkPopover, gtk_popover, GTK_TYPE_BIN) static void gtk_popover_init (GtkPopover *popover) { GtkPopoverPrivate *priv; GtkWidget *widget; widget = GTK_WIDGET (popover); gtk_widget_set_has_window (widget, TRUE); popover->priv = priv = gtk_popover_get_instance_private (popover); priv->modal = TRUE; } static void gtk_popover_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { switch (prop_id) { case PROP_RELATIVE_TO: gtk_popover_set_relative_to (GTK_POPOVER (object), g_value_get_object (value)); break; case PROP_POINTING_TO: gtk_popover_set_pointing_to (GTK_POPOVER (object), g_value_get_boxed (value)); break; case PROP_POSITION: gtk_popover_set_position (GTK_POPOVER (object), g_value_get_enum (value)); break; case PROP_MODAL: gtk_popover_set_modal (GTK_POPOVER (object), g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void gtk_popover_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkPopoverPrivate *priv = GTK_POPOVER (object)->priv; switch (prop_id) { case PROP_RELATIVE_TO: g_value_set_object (value, priv->widget); break; case PROP_POINTING_TO: g_value_set_boxed (value, &priv->pointing_to); break; case PROP_POSITION: g_value_set_enum (value, priv->preferred_position); break; case PROP_MODAL: g_value_set_boolean (value, priv->modal); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void gtk_popover_finalize (GObject *object) { GtkPopover *popover = GTK_POPOVER (object); GtkPopoverPrivate *priv = popover->priv; if (priv->widget) gtk_popover_update_relative_to (popover, NULL); G_OBJECT_CLASS (gtk_popover_parent_class)->finalize (object); } static void gtk_popover_dispose (GObject *object) { GtkPopover *popover = GTK_POPOVER (object); GtkPopoverPrivate *priv = popover->priv; if (priv->window) _gtk_window_remove_popover (priv->window, GTK_WIDGET (object)); priv->window = NULL; if (priv->widget) gtk_popover_update_relative_to (popover, NULL); if (priv->prev_focus_widget) { g_object_unref (priv->prev_focus_widget); priv->prev_focus_widget = NULL; } gtk_widget_set_visible (GTK_WIDGET (object), FALSE); G_OBJECT_CLASS (gtk_popover_parent_class)->dispose (object); } static void gtk_popover_realize (GtkWidget *widget) { GtkAllocation allocation; GdkWindowAttr attributes; gint attributes_mask; GdkWindow *window; gtk_widget_get_allocation (widget, &allocation); attributes.x = 0; attributes.y = 0; attributes.width = allocation.width; attributes.height = allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.visual = gtk_widget_get_visual (widget); attributes.wclass = GDK_INPUT_OUTPUT; attributes.event_mask = gtk_widget_get_events (widget) | GDK_BUTTON_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_EXPOSURE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL; window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gtk_widget_set_window (widget, window); gtk_widget_register_window (widget, window); gtk_widget_set_realized (widget, TRUE); } static void gtk_popover_apply_modality (GtkPopover *popover, gboolean modal) { GtkPopoverPrivate *priv; priv = popover->priv; if (modal) { GtkWidget *prev_focus; prev_focus = gtk_window_get_focus (priv->window); priv->prev_focus_widget = prev_focus; if (priv->prev_focus_widget) g_object_ref (prev_focus); gtk_grab_add (GTK_WIDGET (popover)); gtk_widget_grab_focus (GTK_WIDGET (popover)); } else { gtk_grab_remove (GTK_WIDGET (popover)); /* Let prev_focus_widget regain focus */ if (priv->prev_focus_widget) { gtk_widget_grab_focus (priv->prev_focus_widget); g_object_unref (priv->prev_focus_widget); priv->prev_focus_widget = NULL; } } } static void gtk_popover_map (GtkWidget *widget) { GtkPopoverPrivate *priv; priv = GTK_POPOVER (widget)->priv; GTK_WIDGET_CLASS (gtk_popover_parent_class)->map (widget); gdk_window_show (gtk_widget_get_window (widget)); gtk_popover_update_position (GTK_POPOVER (widget)); if (priv->modal) gtk_popover_apply_modality (GTK_POPOVER (widget), TRUE); } static void gtk_popover_unmap (GtkWidget *widget) { GtkPopoverPrivate *priv; priv = GTK_POPOVER (widget)->priv; priv->button_pressed = FALSE; if (priv->modal) gtk_popover_apply_modality (GTK_POPOVER (widget), FALSE); gdk_window_hide (gtk_widget_get_window (widget)); GTK_WIDGET_CLASS (gtk_popover_parent_class)->unmap (widget); g_signal_emit (widget, signals[CLOSED], 0); } static void gtk_popover_get_pointed_to_coords (GtkPopover *popover, cairo_rectangle_int_t *rect_out) { GtkPopoverPrivate *priv = popover->priv; cairo_rectangle_int_t rect; if (!rect_out) return; gtk_popover_get_pointing_to (popover, &rect); gtk_widget_translate_coordinates (priv->widget, GTK_WIDGET (priv->window), rect.x, rect.y, &rect.x, &rect.y); *rect_out = rect; } static GtkPositionType get_effective_position (GtkPopover *popover, GtkPositionType pos) { if (gtk_widget_get_direction (GTK_WIDGET (popover)) == GTK_TEXT_DIR_RTL) { if (pos == GTK_POS_LEFT) pos = GTK_POS_RIGHT; else if (pos == GTK_POS_RIGHT) pos = GTK_POS_LEFT; } return pos; } static void get_margin (GtkWidget *widget, GtkBorder *border) { GtkStyleContext *context; GtkStateFlags state; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get_margin (context, state, border); } static void gtk_popover_get_gap_coords (GtkPopover *popover, gint *initial_x_out, gint *initial_y_out, gint *tip_x_out, gint *tip_y_out, gint *final_x_out, gint *final_y_out, GtkPositionType *gap_side_out) { GtkWidget *widget = GTK_WIDGET (popover); GtkPopoverPrivate *priv = popover->priv; cairo_rectangle_int_t rect; gint base, tip, tip_pos; gint initial_x, initial_y; gint tip_x, tip_y; gint final_x, final_y; GtkPositionType gap_side, pos; GtkAllocation allocation; gint border_radius; GtkStateFlags state; GtkStyleContext *context; GtkBorder margin, border; gtk_popover_get_pointing_to (popover, &rect); gtk_widget_get_allocation (widget, &allocation); gtk_widget_translate_coordinates (priv->widget, widget, rect.x, rect.y, &rect.x, &rect.y); get_margin (widget, &margin); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) rect.x += gtk_widget_get_margin_start (widget); else rect.x += gtk_widget_get_margin_end (widget); rect.y += gtk_widget_get_margin_top (widget); context = gtk_widget_get_style_context (GTK_WIDGET (popover)); state = gtk_widget_get_state_flags (GTK_WIDGET (popover)); gtk_style_context_get_border (context, state, &border); gtk_style_context_get (context, state, GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius, NULL); pos = get_effective_position (popover, priv->final_position); if (pos == GTK_POS_BOTTOM || pos == GTK_POS_RIGHT) { base = TAIL_HEIGHT + ((pos == GTK_POS_BOTTOM) ? border.top : border.left); tip = 0; gap_side = (priv->final_position == GTK_POS_BOTTOM) ? GTK_POS_TOP : GTK_POS_LEFT; } else if (pos == GTK_POS_TOP) { base = allocation.height - TAIL_HEIGHT - border.bottom; tip = allocation.height; gap_side = GTK_POS_BOTTOM; } else if (pos == GTK_POS_LEFT) { base = allocation.width - TAIL_HEIGHT - border.right; tip = allocation.width; gap_side = GTK_POS_RIGHT; } else g_assert_not_reached (); if (POS_IS_VERTICAL (pos)) { tip_pos = rect.x + (rect.width / 2); initial_x = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2, border_radius + margin.left, allocation.width - TAIL_GAP_WIDTH - margin.right - border_radius); initial_y = base; tip_x = CLAMP (tip_pos, 0, allocation.width); tip_y = tip; final_x = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2, border_radius + margin.left + TAIL_GAP_WIDTH, allocation.width - margin.right - border_radius); final_y = base; } else { tip_pos = rect.y + (rect.height / 2); initial_x = base; initial_y = CLAMP (tip_pos - TAIL_GAP_WIDTH / 2, border_radius + margin.top, allocation.height - TAIL_GAP_WIDTH - margin.bottom - border_radius); tip_x = tip; tip_y = CLAMP (tip_pos, 0, allocation.height); final_x = base; final_y = CLAMP (tip_pos + TAIL_GAP_WIDTH / 2, border_radius + margin.top + TAIL_GAP_WIDTH, allocation.height - margin.right - border_radius); } if (initial_x_out) *initial_x_out = initial_x; if (initial_y_out) *initial_y_out = initial_y; if (tip_x_out) *tip_x_out = tip_x; if (tip_y_out) *tip_y_out = tip_y; if (final_x_out) *final_x_out = final_x; if (final_y_out) *final_y_out = final_y; if (gap_side_out) *gap_side_out = gap_side; } static void gtk_popover_get_rect_coords (GtkPopover *popover, gint *x1_out, gint *y1_out, gint *x2_out, gint *y2_out) { GtkWidget *widget = GTK_WIDGET (popover); GtkPopoverPrivate *priv = popover->priv; GtkAllocation allocation; GtkPositionType pos; gint x1, x2, y1, y2; GtkBorder margin; gtk_widget_get_allocation (widget, &allocation); get_margin (widget, &margin); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR) x1 = gtk_widget_get_margin_start (widget); else x1 = gtk_widget_get_margin_end (widget); y1 = gtk_widget_get_margin_top (widget); x2 = allocation.width - gtk_widget_get_margin_end (widget) + x1; y2 = allocation.height - gtk_widget_get_margin_bottom (widget) + y1; pos = get_effective_position (popover, priv->final_position); if (pos == GTK_POS_TOP) y2 -= MAX (TAIL_HEIGHT, margin.bottom); else if (pos == GTK_POS_BOTTOM) y1 += MAX (TAIL_HEIGHT, margin.top); else if (pos == GTK_POS_LEFT) x2 -= MAX (TAIL_HEIGHT, margin.right); else if (pos == GTK_POS_RIGHT) x1 += MAX (TAIL_HEIGHT, margin.left); if (pos != GTK_POS_BOTTOM) y1 += margin.top; if (pos != GTK_POS_TOP) y2 -= margin.bottom; if (pos != GTK_POS_RIGHT) x1 += margin.left; if (pos != GTK_POS_LEFT) x2 -= margin.right; if (x1_out) *x1_out = x1; if (y1_out) *y1_out = y1; if (x2_out) *x2_out = x2; if (y2_out) *y2_out = y2; } static void gtk_popover_apply_tail_path (GtkPopover *popover, cairo_t *cr) { gint initial_x, initial_y; gint tip_x, tip_y; gint final_x, final_y; cairo_set_line_width (cr, 1); gtk_popover_get_gap_coords (popover, &initial_x, &initial_y, &tip_x, &tip_y, &final_x, &final_y, NULL); cairo_move_to (cr, initial_x, initial_y); cairo_line_to (cr, tip_x, tip_y); cairo_line_to (cr, final_x, final_y); } static void gtk_popover_fill_border_path (GtkPopover *popover, cairo_t *cr) { GtkAllocation allocation; GtkStyleContext *context; gint x1, y1, x2, y2; context = gtk_widget_get_style_context (GTK_WIDGET (popover)); gtk_widget_get_allocation (GTK_WIDGET (popover), &allocation); gtk_popover_apply_tail_path (popover, cr); cairo_close_path (cr); cairo_fill (cr); gtk_popover_get_rect_coords (popover, &x1, &y1, &x2, &y2); gtk_render_frame (context, cr, x1, y1, x2 - x1, y2 - y1); gtk_render_background (context, cr, x1, y1, x2 - x1, y2 - y1); } static void gtk_popover_update_shape (GtkPopover *popover) { cairo_surface_t *surface; cairo_region_t *region; GdkWindow *win; cairo_t *cr; win = gtk_widget_get_window (GTK_WIDGET (popover)); surface = gdk_window_create_similar_surface (win, CAIRO_CONTENT_COLOR_ALPHA, gdk_window_get_width (win), gdk_window_get_height (win)); cr = cairo_create (surface); gtk_popover_fill_border_path (popover, cr); cairo_destroy (cr); region = gdk_cairo_region_create_from_surface (surface); cairo_surface_destroy (surface); gtk_widget_shape_combine_region (GTK_WIDGET (popover), region); cairo_region_destroy (region); gdk_window_set_child_shapes (gtk_widget_get_parent_window (GTK_WIDGET (popover))); } static void _gtk_popover_update_child_visible (GtkPopover *popover) { cairo_rectangle_int_t rect; GtkAllocation allocation; GtkPopoverPrivate *priv; GtkWidget *parent; priv = popover->priv; if (!priv->parent_scrollable) { gtk_widget_set_child_visible (GTK_WIDGET (popover), TRUE); return; } parent = gtk_widget_get_parent (GTK_WIDGET (priv->parent_scrollable)); rect = priv->pointing_to; gtk_widget_translate_coordinates (priv->widget, parent, rect.x, rect.y, &rect.x, &rect.y); gtk_widget_get_allocation (GTK_WIDGET (parent), &allocation); if (rect.x < 0 || rect.x + rect.width > allocation.width || rect.y < 0 || rect.y + rect.height > allocation.height) gtk_widget_set_child_visible (GTK_WIDGET (popover), FALSE); else gtk_widget_set_child_visible (GTK_WIDGET (popover), TRUE); } static void gtk_popover_update_position (GtkPopover *popover) { GtkAllocation window_alloc; cairo_rectangle_int_t rect; GtkPopoverPrivate *priv; GtkPositionType pos; GtkRequisition req; priv = popover->priv; if (!priv->window) return; gtk_widget_get_preferred_size (GTK_WIDGET (popover), NULL, &req); gtk_widget_get_allocation (GTK_WIDGET (priv->window), &window_alloc); priv->final_position = priv->preferred_position; gtk_popover_get_pointed_to_coords (popover, &rect); pos = get_effective_position (popover, priv->preferred_position); /* Check whether there's enough room on the * preferred side, move to the opposite one if not. */ if (pos == GTK_POS_TOP && rect.y < req.height) priv->final_position = GTK_POS_BOTTOM; else if (pos == GTK_POS_BOTTOM && rect.y > window_alloc.height - req.height) priv->final_position = GTK_POS_TOP; else if (pos == GTK_POS_LEFT && rect.x < req.width) priv->final_position = get_effective_position (popover, GTK_POS_RIGHT); else if (pos == GTK_POS_RIGHT && rect.x > window_alloc.width - req.width) priv->final_position = get_effective_position (popover, GTK_POS_LEFT); _gtk_window_set_popover_position (priv->window, GTK_WIDGET (popover), priv->final_position, &rect); if (priv->final_position != priv->current_position) { if (priv->apply_shape && gtk_widget_is_drawable (GTK_WIDGET (popover))) gtk_popover_update_shape (popover); priv->current_position = priv->final_position; } _gtk_popover_update_child_visible (popover); } static gboolean gtk_popover_draw (GtkWidget *widget, cairo_t *cr) { GtkStyleContext *context; GtkAllocation allocation; GtkWidget *child; GtkBorder border; GdkRGBA border_color; gint rect_x1, rect_x2, rect_y1, rect_y2; gint initial_x, initial_y, final_x, final_y; gint gap_start, gap_end; GtkPositionType gap_side; GtkStateFlags state; context = gtk_widget_get_style_context (widget); gtk_style_context_save (context); state = gtk_widget_get_state_flags (widget); gtk_widget_get_allocation (widget, &allocation); gtk_style_context_get_border (context, state, &border); gtk_popover_get_rect_coords (GTK_POPOVER (widget), &rect_x1, &rect_y1, &rect_x2, &rect_y2); /* Render the rect background */ gtk_render_background (context, cr, rect_x1 + border.left, rect_y1 + border.top, rect_x2 - rect_x1 - border.left - border.right, rect_y2 - rect_y1 - border.top - border.bottom); gtk_popover_get_gap_coords (GTK_POPOVER (widget), &initial_x, &initial_y, NULL, NULL, &final_x, &final_y, &gap_side); if (POS_IS_VERTICAL (gap_side)) { gap_start = initial_x - rect_x1; gap_end = final_x - rect_x1; } else { gap_start = initial_y - rect_y1; gap_end = final_y - rect_y1; } /* Now render the frame, without the gap for the arrow tip */ gtk_render_frame_gap (context, cr, rect_x1, rect_y1, rect_x2 - rect_x1, rect_y2 - rect_y1, gap_side, gap_start, gap_end); /* Clip to the arrow shape */ cairo_save (cr); gtk_popover_apply_tail_path (GTK_POPOVER (widget), cr); cairo_clip (cr); /* Render the arrow background */ gtk_render_background (context, cr, 0, 0, allocation.width, allocation.height); /* Render the border of the arrow tip */ if (border.bottom > 0) { gtk_style_context_get_border_color (context, state, &border_color); gtk_popover_apply_tail_path (GTK_POPOVER (widget), cr); gdk_cairo_set_source_rgba (cr, &border_color); cairo_set_line_width (cr, border.bottom + 1); cairo_stroke (cr); } /* We're done */ cairo_restore (cr); child = gtk_bin_get_child (GTK_BIN (widget)); if (child) gtk_container_propagate_draw (GTK_CONTAINER (widget), child, cr); gtk_style_context_restore (context); return TRUE; } static void get_padding_and_border (GtkWidget *widget, GtkBorder *border) { GtkStyleContext *context; GtkStateFlags state; gint border_width; GtkBorder tmp; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); gtk_style_context_get_padding (context, state, border); gtk_style_context_get_border (context, state, &tmp); border->top += tmp.top + border_width; border->right += tmp.right + border_width; border->bottom += tmp.bottom + border_width; border->left += tmp.left + border_width; } static gint get_border_radius (GtkWidget *widget) { GtkStyleContext *context; GtkStateFlags state; gint border_radius; context = gtk_widget_get_style_context (widget); state = gtk_widget_get_state_flags (widget); gtk_style_context_get (context, state, GTK_STYLE_PROPERTY_BORDER_RADIUS, &border_radius, NULL); return border_radius; } static gint get_minimal_size (GtkPopover *popover, GtkOrientation orientation) { GtkPopoverPrivate *priv; GtkPositionType pos; gint minimal_size; priv = gtk_popover_get_instance_private (popover); minimal_size = 2 * get_border_radius (GTK_WIDGET (popover)); pos = get_effective_position (popover, priv->preferred_position); if ((orientation == GTK_ORIENTATION_HORIZONTAL && POS_IS_VERTICAL (pos)) || (orientation == GTK_ORIENTATION_VERTICAL && !POS_IS_VERTICAL (pos))) minimal_size += TAIL_GAP_WIDTH; return minimal_size; } static void gtk_popover_get_preferred_width (GtkWidget *widget, gint *minimum_width, gint *natural_width) { GtkPopoverPrivate *priv; GtkWidget *child; GtkPositionType pos; gint min, nat, extra, minimal_size; GtkBorder border, margin; priv = GTK_POPOVER (widget)->priv; child = gtk_bin_get_child (GTK_BIN (widget)); min = nat = 0; if (child) gtk_widget_get_preferred_width (child, &min, &nat); get_padding_and_border (widget, &border); get_margin (widget, &margin); minimal_size = get_minimal_size (GTK_POPOVER (widget), GTK_ORIENTATION_HORIZONTAL); min = MAX (min, minimal_size) + border.left + border.right; nat = MAX (nat, minimal_size) + border.left + border.right; pos = get_effective_position (GTK_POPOVER (widget), priv->preferred_position); if (pos == GTK_POS_LEFT) extra = margin.left + MAX (TAIL_HEIGHT, margin.right); else if (pos == GTK_POS_RIGHT) extra = MAX (TAIL_HEIGHT, margin.left) + margin.right; else extra = margin.left + margin.right; min += extra; nat += extra; if (minimum_width) *minimum_width = min; if (natural_width) *natural_width = nat; } static void gtk_popover_get_preferred_width_for_height (GtkWidget *widget, gint height, gint *minimum_width, gint *natural_width) { GtkPopoverPrivate *priv; GtkWidget *child; GtkPositionType pos; gint min, nat, extra, minimal_size; gint child_height; GtkBorder border, margin; priv = GTK_POPOVER (widget)->priv; child = gtk_bin_get_child (GTK_BIN (widget)); min = nat = 0; child_height = height; if (POS_IS_VERTICAL (priv->preferred_position)) child_height -= TAIL_HEIGHT; get_padding_and_border (widget, &border); get_margin (widget, &margin); child_height -= border.top + border.bottom; minimal_size = get_minimal_size (GTK_POPOVER (widget), GTK_ORIENTATION_HORIZONTAL); if (child) gtk_widget_get_preferred_width_for_height (child, child_height, &min, &nat); min = MAX (min, minimal_size) + border.left + border.right; nat = MAX (nat, minimal_size) + border.left + border.right; pos = get_effective_position (GTK_POPOVER (widget), priv->preferred_position); if (pos == GTK_POS_LEFT) extra = margin.left + MAX (TAIL_HEIGHT, margin.right); else if (pos == GTK_POS_RIGHT) extra = MAX (TAIL_HEIGHT, margin.left) + margin.right; else extra = margin.left + margin.right; min += extra; nat += extra; if (minimum_width) *minimum_width = min; if (natural_width) *natural_width = nat; } static void gtk_popover_get_preferred_height (GtkWidget *widget, gint *minimum_height, gint *natural_height) { GtkPopoverPrivate *priv; GtkWidget *child; GtkPositionType pos; gint min, nat, extra, minimal_size; GtkBorder border, margin; priv = GTK_POPOVER (widget)->priv; child = gtk_bin_get_child (GTK_BIN (widget)); min = nat = 0; if (child) gtk_widget_get_preferred_height (child, &min, &nat); get_padding_and_border (widget, &border); get_margin (widget, &margin); minimal_size = get_minimal_size (GTK_POPOVER (widget), GTK_ORIENTATION_VERTICAL); min = MAX (min, minimal_size) + border.top + border.bottom; nat = MAX (nat, minimal_size) + border.top + border.bottom; pos = get_effective_position (GTK_POPOVER (widget), priv->preferred_position); if (pos == GTK_POS_TOP) extra = margin.top + MAX (TAIL_HEIGHT, margin.bottom); else if (pos == GTK_POS_BOTTOM) extra = MAX (TAIL_HEIGHT, margin.top) + margin.bottom; else extra = margin.top + margin.bottom; min += extra; nat += extra; if (minimum_height) *minimum_height = min; if (natural_height) *natural_height = nat; } static void gtk_popover_get_preferred_height_for_width (GtkWidget *widget, gint width, gint *minimum_height, gint *natural_height) { GtkPopoverPrivate *priv; GtkWidget *child; GtkPositionType pos; gint min, nat, extra, minimal_size; gint child_width; GtkBorder border, margin; priv = GTK_POPOVER (widget)->priv; child = gtk_bin_get_child (GTK_BIN (widget)); min = nat = 0; child_width = width; if (!POS_IS_VERTICAL (priv->preferred_position)) child_width -= TAIL_HEIGHT; get_padding_and_border (widget, &border); get_margin (widget, &margin); child_width -= border.left + border.right; minimal_size = get_minimal_size (GTK_POPOVER (widget), GTK_ORIENTATION_VERTICAL); if (child) gtk_widget_get_preferred_height_for_width (child, child_width, &min, &nat); min = MAX (min, minimal_size) + border.top + border.bottom; nat = MAX (nat, minimal_size) + border.top + border.bottom; pos = get_effective_position (GTK_POPOVER (widget), priv->preferred_position); if (pos == GTK_POS_TOP) extra = margin.top + MAX (TAIL_HEIGHT, margin.bottom); else if (pos == GTK_POS_BOTTOM) extra = MAX (TAIL_HEIGHT, margin.top) + margin.bottom; else extra = margin.top + margin.bottom; min += extra; nat += extra; if (minimum_height) *minimum_height = min; if (natural_height) *natural_height = nat; } static void gtk_popover_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkPopoverPrivate *priv; GtkWidget *child; priv = gtk_popover_get_instance_private (GTK_POPOVER (widget)); gtk_widget_set_allocation (widget, allocation); child = gtk_bin_get_child (GTK_BIN (widget)); if (child) { GtkAllocation child_alloc; gint x1, y1, x2, y2; GtkBorder border; gtk_popover_get_rect_coords (GTK_POPOVER (widget), &x1, &y1, &x2, &y2); get_padding_and_border (widget, &border); child_alloc.x = x1 + border.left; child_alloc.y = y1 + border.top; child_alloc.width = (x2 - x1) - border.left - border.right; child_alloc.height = (y2 - y1) - border.top - border.bottom; gtk_widget_size_allocate (child, &child_alloc); } if (gtk_widget_get_realized (widget)) { gdk_window_move_resize (gtk_widget_get_window (widget), 0, 0, allocation->width, allocation->height); if (priv->apply_shape) gtk_popover_update_shape (GTK_POPOVER (widget)); } } static gboolean gtk_popover_button_press (GtkWidget *widget, GdkEventButton *event) { GtkPopoverPrivate *priv; if (event->type != GDK_BUTTON_PRESS) return GDK_EVENT_PROPAGATE; priv = gtk_popover_get_instance_private (GTK_POPOVER (widget)); priv->button_pressed = TRUE; return GDK_EVENT_PROPAGATE; } static gboolean gtk_popover_button_release (GtkWidget *widget, GdkEventButton *event) { GtkPopoverPrivate *priv; GtkWidget *child; priv = gtk_popover_get_instance_private (GTK_POPOVER (widget)); child = gtk_bin_get_child (GTK_BIN (widget)); if (!priv->button_pressed) return GDK_EVENT_PROPAGATE; if (child && event->window == gtk_widget_get_window (widget)) { GtkAllocation child_alloc; gtk_widget_get_allocation (child, &child_alloc); if (event->x < child_alloc.x || event->x > child_alloc.x + child_alloc.width || event->y < child_alloc.y || event->y > child_alloc.y + child_alloc.height) gtk_widget_hide (widget); } else gtk_widget_hide (widget); return GDK_EVENT_PROPAGATE; } static gboolean gtk_popover_key_press (GtkWidget *widget, GdkEventKey *event) { if (event->keyval == GDK_KEY_Escape) { gtk_widget_hide (widget); return GDK_EVENT_STOP; } return GDK_EVENT_PROPAGATE; } static void gtk_popover_grab_focus (GtkWidget *widget) { /* Focus the first natural child */ gtk_widget_child_focus (gtk_bin_get_child (GTK_BIN (widget)), GTK_DIR_TAB_FORWARD); } static gboolean gtk_popover_focus (GtkWidget *widget, GtkDirectionType direction) { GtkPopoverPrivate *priv; priv = gtk_popover_get_instance_private (GTK_POPOVER (widget)); if (!GTK_WIDGET_CLASS (gtk_popover_parent_class)->focus (widget, direction)) { GtkWidget *focus; focus = gtk_window_get_focus (priv->window); focus = gtk_widget_get_parent (focus); /* Unset focus child through children, so it is next stepped from * scratch. */ while (focus && focus != widget) { gtk_container_set_focus_child (GTK_CONTAINER (focus), NULL); focus = gtk_widget_get_parent (focus); } return gtk_widget_child_focus (gtk_bin_get_child (GTK_BIN (widget)), direction); } return TRUE; } static void gtk_popover_class_init (GtkPopoverClass *klass) { GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->set_property = gtk_popover_set_property; object_class->get_property = gtk_popover_get_property; object_class->finalize = gtk_popover_finalize; object_class->dispose = gtk_popover_dispose; widget_class->realize = gtk_popover_realize; widget_class->map = gtk_popover_map; widget_class->unmap = gtk_popover_unmap; widget_class->get_preferred_width = gtk_popover_get_preferred_width; widget_class->get_preferred_height = gtk_popover_get_preferred_height; widget_class->get_preferred_width_for_height = gtk_popover_get_preferred_width_for_height; widget_class->get_preferred_height_for_width = gtk_popover_get_preferred_height_for_width; widget_class->size_allocate = gtk_popover_size_allocate; widget_class->draw = gtk_popover_draw; widget_class->button_press_event = gtk_popover_button_press; widget_class->button_release_event = gtk_popover_button_release; widget_class->key_press_event = gtk_popover_key_press; widget_class->grab_focus = gtk_popover_grab_focus; widget_class->focus = gtk_popover_focus; /** * GtkPopover:relative-to: * * Sets the attached widget. * * Since: 3.12 */ g_object_class_install_property (object_class, PROP_RELATIVE_TO, g_param_spec_object ("relative-to", P_("Relative to"), P_("Widget the bubble window points to"), GTK_TYPE_WIDGET, GTK_PARAM_READWRITE)); /** * GtkPopover:pointing-to: * * Marks a specific rectangle to be pointed. * * Since: 3.12 */ g_object_class_install_property (object_class, PROP_POINTING_TO, g_param_spec_boxed ("pointing-to", P_("Pointing to"), P_("Rectangle the bubble window points to"), CAIRO_GOBJECT_TYPE_RECTANGLE_INT, GTK_PARAM_READWRITE)); /** * GtkPopover:position * * Sets the preferred position of the popover. * * Since: 3.12 */ g_object_class_install_property (object_class, PROP_POSITION, g_param_spec_enum ("position", P_("Position"), P_("Position to place the bubble window"), GTK_TYPE_POSITION_TYPE, GTK_POS_TOP, GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT)); /** * GtkPopover:modal * * Sets whether the popover is modal (so other elements in the window do not * receive input while the popover is visible). * * Since: 3.12 */ g_object_class_install_property (object_class, PROP_MODAL, g_param_spec_boolean ("modal", P_("Modal"), P_("Whether the popover is modal"), TRUE, GTK_PARAM_READWRITE)); signals[CLOSED] = g_signal_new (I_("closed"), G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkPopoverClass, closed), NULL, NULL, NULL, G_TYPE_NONE, 0); quark_widget_popovers = g_quark_from_static_string ("gtk-quark-widget-popovers"); } static void _gtk_popover_update_context_parent (GtkPopover *popover) { GtkStyleContext *context, *parent_context = NULL; GtkPopoverPrivate *priv = popover->priv; context = gtk_widget_get_style_context (GTK_WIDGET (popover)); if (priv->widget) parent_context = gtk_widget_get_style_context (priv->widget); gtk_style_context_set_parent (context, parent_context); } static void _gtk_popover_parent_hierarchy_changed (GtkWidget *widget, GtkWidget *previous_toplevel, GtkPopover *popover) { GtkPopoverPrivate *priv; GtkWindow *new_window; priv = popover->priv; new_window = GTK_WINDOW (gtk_widget_get_ancestor (widget, GTK_TYPE_WINDOW)); if (priv->window == new_window) return; g_object_ref (popover); if (priv->window) _gtk_window_remove_popover (priv->window, GTK_WIDGET (popover)); if (new_window) _gtk_window_add_popover (new_window, GTK_WIDGET (popover)); priv->window = new_window; if (new_window) gtk_popover_update_position (popover); _gtk_popover_update_context_parent (popover); if (gtk_widget_is_visible (GTK_WIDGET (popover))) gtk_widget_queue_resize (GTK_WIDGET (popover)); g_object_unref (popover); } static void _gtk_popover_parent_unmap (GtkWidget *widget, GtkPopover *popover) { gtk_widget_unmap (GTK_WIDGET (popover)); } static void _gtk_popover_parent_size_allocate (GtkWidget *widget, GtkAllocation *allocation, GtkPopover *popover) { gtk_popover_update_position (popover); } static void widget_manage_popover (GtkWidget *widget, GtkPopover *popover) { GHashTable *popovers; popovers = g_object_get_qdata (G_OBJECT (widget), quark_widget_popovers); if (G_UNLIKELY (!popovers)) { popovers = g_hash_table_new_full (NULL, NULL, (GDestroyNotify) g_object_unref, NULL); g_object_set_qdata_full (G_OBJECT (widget), quark_widget_popovers, popovers, (GDestroyNotify) g_hash_table_unref); } g_hash_table_add (popovers, g_object_ref_sink (popover)); } static void widget_unmanage_popover (GtkWidget *widget, GtkPopover *popover) { GHashTable *popovers; popovers = g_object_get_qdata (G_OBJECT (widget), quark_widget_popovers); if (G_UNLIKELY (!popovers)) return; g_hash_table_remove (popovers, popover); } static void adjustment_changed_cb (GtkAdjustment *adjustment, GtkPopover *popover) { gtk_popover_update_position (popover); } static void _gtk_popover_set_scrollable (GtkPopover *popover, GtkScrollable *scrollable) { GtkPopoverPrivate *priv; priv = popover->priv; if (priv->parent_scrollable) { if (priv->vadj) { g_signal_handlers_disconnect_by_data (priv->vadj, popover); g_object_unref (priv->vadj); priv->vadj = NULL; } if (priv->hadj) { g_signal_handlers_disconnect_by_data (priv->hadj, popover); g_object_unref (priv->hadj); priv->hadj = NULL; } } priv->parent_scrollable = scrollable; if (scrollable) { priv->vadj = gtk_scrollable_get_vadjustment (scrollable); priv->hadj = gtk_scrollable_get_hadjustment (scrollable); if (priv->vadj) { g_object_ref (priv->vadj); g_signal_connect (priv->vadj, "changed", G_CALLBACK (adjustment_changed_cb), popover); g_signal_connect (priv->vadj, "value-changed", G_CALLBACK (adjustment_changed_cb), popover); } if (priv->hadj) { g_object_ref (priv->hadj); g_signal_connect (priv->hadj, "changed", G_CALLBACK (adjustment_changed_cb), popover); g_signal_connect (priv->hadj, "value-changed", G_CALLBACK (adjustment_changed_cb), popover); } } } static void scrollable_notify_cb (GObject *object, GParamSpec *pspec, GtkPopover *popover) { if (pspec->value_type == GTK_TYPE_ADJUSTMENT) _gtk_popover_set_scrollable (popover, GTK_SCROLLABLE (object)); } static void gtk_popover_update_relative_to (GtkPopover *popover, GtkWidget *relative_to) { GtkScrollable *scrollable = NULL; GtkPopoverPrivate *priv; priv = popover->priv; if (priv->widget == relative_to) return; g_object_ref (popover); if (priv->window) { _gtk_window_remove_popover (priv->window, GTK_WIDGET (popover)); priv->window = NULL; } if (priv->widget) { if (g_signal_handler_is_connected (priv->widget, priv->hierarchy_changed_id)) g_signal_handler_disconnect (priv->widget, priv->hierarchy_changed_id); if (g_signal_handler_is_connected (priv->widget, priv->size_allocate_id)) g_signal_handler_disconnect (priv->widget, priv->size_allocate_id); if (g_signal_handler_is_connected (priv->widget, priv->unmap_id)) g_signal_handler_disconnect (priv->widget, priv->unmap_id); widget_unmanage_popover (priv->widget, popover); } if (priv->parent_scrollable) { if (g_signal_handler_is_connected (priv->parent_scrollable, priv->scrollable_notify_id)) g_signal_handler_disconnect (priv->parent_scrollable, priv->scrollable_notify_id); _gtk_popover_set_scrollable (popover, NULL); } priv->widget = relative_to; g_object_notify (G_OBJECT (popover), "relative-to"); if (priv->widget) { priv->window = GTK_WINDOW (gtk_widget_get_ancestor (priv->widget, GTK_TYPE_WINDOW)); priv->hierarchy_changed_id = g_signal_connect (priv->widget, "hierarchy-changed", G_CALLBACK (_gtk_popover_parent_hierarchy_changed), popover); priv->size_allocate_id = g_signal_connect (priv->widget, "size-allocate", G_CALLBACK (_gtk_popover_parent_size_allocate), popover); priv->unmap_id = g_signal_connect (priv->widget, "unmap", G_CALLBACK (_gtk_popover_parent_unmap), popover); /* Give ownership of the popover to widget */ widget_manage_popover (priv->widget, popover); } if (priv->window) _gtk_window_add_popover (priv->window, GTK_WIDGET (popover)); if (relative_to) scrollable = GTK_SCROLLABLE (gtk_widget_get_ancestor (priv->widget, GTK_TYPE_SCROLLABLE)); if (scrollable) { _gtk_popover_set_scrollable (popover, scrollable); priv->scrollable_notify_id = g_signal_connect (priv->parent_scrollable, "notify", G_CALLBACK (scrollable_notify_cb), popover); } _gtk_popover_update_context_parent (popover); g_object_unref (popover); } static void gtk_popover_update_pointing_to (GtkPopover *popover, cairo_rectangle_int_t *pointing_to) { GtkPopoverPrivate *priv; priv = popover->priv; if (pointing_to) { priv->pointing_to = *pointing_to; priv->has_pointing_to = TRUE; } else priv->has_pointing_to = FALSE; g_object_notify (G_OBJECT (popover), "pointing-to"); } static void gtk_popover_update_preferred_position (GtkPopover *popover, GtkPositionType position) { GtkPopoverPrivate *priv; priv = popover->priv; priv->preferred_position = position; g_object_notify (G_OBJECT (popover), "position"); } /** * gtk_popover_new: * @relative_to: #GtkWidget the popover is related to * * Creates a new popover to point to @relative_to * * Returns: a new #GtkPopover * * Since: 3.12 **/ GtkWidget * gtk_popover_new (GtkWidget *relative_to) { return g_object_new (GTK_TYPE_POPOVER, "relative-to", relative_to, NULL); } /** * gtk_popover_set_relative_to: * @popover: a #GtkPopover * @relative_to: a #GtkWidget * * Sets a new widget to be attached to @popover. If @popover is * visible, the position will be updated. * * Since: 3.12 **/ void gtk_popover_set_relative_to (GtkPopover *popover, GtkWidget *relative_to) { g_return_if_fail (GTK_IS_POPOVER (popover)); g_return_if_fail (GTK_IS_WIDGET (relative_to)); gtk_popover_update_relative_to (popover, relative_to); gtk_popover_update_position (popover); } /** * gtk_popover_get_relative_to: * @popover: a #GtkPopover * * Returns the wigdet @popover is currently attached to * * Returns: (transfer none): a #GtkWidget * * Since: 3.12 **/ GtkWidget * gtk_popover_get_relative_to (GtkPopover *popover) { GtkPopoverPrivate *priv; g_return_val_if_fail (GTK_IS_POPOVER (popover), NULL); priv = popover->priv; return priv->widget; } /** * gtk_popover_set_pointing_to: * @popover: a #GtkPopover * @rect: rectangle to point to * * Sets the rectangle that @popover will point to, in the coordinate * space of the widget @popover is attached to, see * gtk_popover_set_relative_to() * * Since: 3.12 **/ void gtk_popover_set_pointing_to (GtkPopover *popover, cairo_rectangle_int_t *rect) { g_return_if_fail (GTK_IS_POPOVER (popover)); g_return_if_fail (rect != NULL); gtk_popover_update_pointing_to (popover, rect); gtk_popover_update_position (popover); } /** * gtk_popover_get_pointing_to: * @popover: a #GtkPopover * @rect: (out): location to store the rectangle * * If a rectangle to point to has been set, this function will * return %TRUE and fill in @rect with such rectangle, otherwise * it will return %FALSE and fill in @rect with the attached * widget coordinates. * * Returns: %TRUE if a rectangle to point to was set. **/ gboolean gtk_popover_get_pointing_to (GtkPopover *popover, cairo_rectangle_int_t *rect) { GtkPopoverPrivate *priv; g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE); priv = popover->priv; if (rect) { if (priv->has_pointing_to) *rect = priv->pointing_to; else if (priv->widget) { gtk_widget_get_allocation (priv->widget, rect); rect->x = rect->y = 0; } } return priv->has_pointing_to; } /** * gtk_popover_set_position: * @popover: a #GtkPopover * @position: preferred popover position * * Sets the preferred position for @popover to appear. If the @popover * is currently visible, it will be immediately updated. * * This preference will be respected where possible, although * on lack of space (eg. if close to the window edges), the * #GtkPopover may choose to appear on the opposite side * * Since: 3.12 **/ void gtk_popover_set_position (GtkPopover *popover, GtkPositionType position) { g_return_if_fail (GTK_IS_POPOVER (popover)); g_return_if_fail (position >= GTK_POS_LEFT && position <= GTK_POS_BOTTOM); gtk_popover_update_preferred_position (popover, position); gtk_popover_update_position (popover); } /** * gtk_popover_get_position: * @popover: a #GtkPopover * * Returns the preferred position of @popover. * * Returns: The preferred position. **/ GtkPositionType gtk_popover_get_position (GtkPopover *popover) { GtkPopoverPrivate *priv; g_return_val_if_fail (GTK_IS_POPOVER (popover), GTK_POS_TOP); priv = popover->priv; return priv->preferred_position; } /** * gtk_popover_set_modal: * @popover: a #GtkPopover * @modal: #TRUE to make popover claim all input within the toplevel * * Sets whether @popover is modal, a modal popover will grab all input * within the toplevel and grab the keyboard focus on it when being * displayed. Clicking outside the popover area or pressing Esc will * dismiss the popover and ungrab input. * * Since: 3.12 **/ void gtk_popover_set_modal (GtkPopover *popover, gboolean modal) { GtkPopoverPrivate *priv; g_return_if_fail (GTK_IS_POPOVER (popover)); priv = popover->priv; if ((priv->modal == TRUE) == (modal == TRUE)) return; priv->modal = (modal != FALSE); if (gtk_widget_is_visible (GTK_WIDGET (popover))) gtk_popover_apply_modality (popover, priv->modal); g_object_notify (G_OBJECT (popover), "modal"); } /** * gtk_popover_get_modal: * @popover: a #GtkPopover * * Returns whether the popover is modal, see gtk_popover_set_modal to * see the implications of this. * * Returns: #TRUE if @popover is modal * * Since: 3.12 **/ gboolean gtk_popover_get_modal (GtkPopover *popover) { GtkPopoverPrivate *priv; g_return_val_if_fail (GTK_IS_POPOVER (popover), FALSE); priv = popover->priv; return priv->modal; } void _gtk_popover_set_apply_shape (GtkPopover *popover, gboolean apply_shape) { GtkPopoverPrivate *priv; g_return_if_fail (GTK_IS_POPOVER (popover)); priv = gtk_popover_get_instance_private (popover); if ((priv->apply_shape == TRUE) == (apply_shape == TRUE)) return; priv->apply_shape = apply_shape; gtk_popover_update_position (popover); gtk_widget_queue_draw (GTK_WIDGET (popover)); }