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318 lines
8.1 KiB
C
318 lines
8.1 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 2020 Red Hat
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include "gdkpopuplayout.h"
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#include "gdksurface.h"
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/**
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* SECTION:gdkpopuplayout
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* @Title: GdkPopupLayout
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* @Short_description: Information for presenting popups
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*
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* Popups are positioned relative to their parent surface.
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* The GdkPopupLayout struct contains information that is
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* necessary to do so.
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*/
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struct _GdkPopupLayout
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{
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/* < private >*/
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grefcount ref_count;
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GdkRectangle anchor_rect;
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GdkGravity rect_anchor;
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GdkGravity surface_anchor;
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GdkAnchorHints anchor_hints;
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int dx;
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int dy;
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};
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G_DEFINE_BOXED_TYPE (GdkPopupLayout, gdk_popup_layout,
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gdk_popup_layout_ref,
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gdk_popup_layout_unref)
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/**
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* gdk_popup_layout_new: (constructor)
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* @anchor_rect: (not nullable): the anchor #GdkRectangle to align @surface with
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* @rect_anchor: the point on @anchor_rect to align with @surface's anchor point
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* @surface_anchor: the point on @surface to align with @rect's anchor point
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*
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* Create a popup layout description. Used together with gdk_popup_present()
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* to describe how a popup surface should be placed and behave on-screen.
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*
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* @anchor_rect is relative to the top-left corner of the surface's parent.
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* @rect_anchor and @surface_anchor determine anchor points on @anchor_rect
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* and surface to pin together.
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*
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* The position of @anchor_rect's anchor point can optionally be offset using
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* gdk_popup_layout_set_offset(), which is equivalent to offsetting the
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* position of surface.
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*
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* Returns: (transfer full): newly created instance of #GdkPopupLayout
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*/
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GdkPopupLayout *
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gdk_popup_layout_new (const GdkRectangle *anchor_rect,
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GdkGravity rect_anchor,
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GdkGravity surface_anchor)
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{
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GdkPopupLayout *layout;
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layout = g_new0 (GdkPopupLayout, 1);
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g_ref_count_init (&layout->ref_count);
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layout->anchor_rect = *anchor_rect;
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layout->rect_anchor = rect_anchor;
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layout->surface_anchor = surface_anchor;
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return layout;
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}
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/**
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* gdk_popup_layout_ref:
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* @layout: a #GdkPopupLayout
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*
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* Increases the reference count of @value.
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*
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* Returns: the same @layout
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*/
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GdkPopupLayout *
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gdk_popup_layout_ref (GdkPopupLayout *layout)
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{
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g_ref_count_inc (&layout->ref_count);
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return layout;
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}
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/**
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* gdk_popup_layout_unref:
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* @layout: a #GdkPopupLayout
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*
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* Decreases the reference count of @value.
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*/
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void
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gdk_popup_layout_unref (GdkPopupLayout *layout)
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{
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if (g_ref_count_dec (&layout->ref_count))
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g_free (layout);
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}
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/**
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* gdk_popup_layout_copy:
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* @layout: a #GdkPopupLayout
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*
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* Create a new #GdkPopupLayout and copy the contents of @layout into it.
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*
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* Returns: (transfer full): a copy of @layout.
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*/
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GdkPopupLayout *
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gdk_popup_layout_copy (GdkPopupLayout *layout)
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{
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GdkPopupLayout *new_layout;
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new_layout = g_new0 (GdkPopupLayout, 1);
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g_ref_count_init (&new_layout->ref_count);
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new_layout->anchor_rect = layout->anchor_rect;
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new_layout->rect_anchor = layout->rect_anchor;
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new_layout->surface_anchor = layout->surface_anchor;
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new_layout->anchor_hints = layout->anchor_hints;
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new_layout->dx = layout->dx;
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new_layout->dy = layout->dy;
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return new_layout;
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}
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/**
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* gdk_popup_layout_equal:
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* @layout: a #GdkPopupLayout
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* @other: another #GdkPopupLayout
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*
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* Check whether @layout and @other has identical layout properties.
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*
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* Returns: %TRUE if @layout and @other have identical layout properties,
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* otherwise %FALSE.
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*/
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gboolean
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gdk_popup_layout_equal (GdkPopupLayout *layout,
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GdkPopupLayout *other)
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{
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g_return_val_if_fail (layout, FALSE);
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g_return_val_if_fail (other, FALSE);
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return (gdk_rectangle_equal (&layout->anchor_rect, &other->anchor_rect) &&
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layout->rect_anchor == other->rect_anchor &&
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layout->surface_anchor == other->surface_anchor &&
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layout->anchor_hints == other->anchor_hints &&
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layout->dx == other->dx &&
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layout->dy == other->dy);
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}
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/**
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* gdk_popup_layout_set_anchor_rect:
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* @layout: a #GdkPopupLayout
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* @anchor_rect: the new anchor rectangle
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*
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* Set the anchor rectangle.
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*/
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void
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gdk_popup_layout_set_anchor_rect (GdkPopupLayout *layout,
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const GdkRectangle *anchor_rect)
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{
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layout->anchor_rect = *anchor_rect;
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}
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/**
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* gdk_popup_layout_get_anchor_rect:
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* @layout: a #GdkPopupLayout
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*
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* Get the anchor rectangle.
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*
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* Returns: The anchor rectangle.
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*/
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const GdkRectangle *
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gdk_popup_layout_get_anchor_rect (GdkPopupLayout *layout)
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{
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return &layout->anchor_rect;
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}
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/**
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* gdk_popup_layout_set_rect_anchor:
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* @layout: a #GdkPopupLayout
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* @anchor: the new rect anchor
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*
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* Set the anchor on the anchor rectangle.
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*/
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void
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gdk_popup_layout_set_rect_anchor (GdkPopupLayout *layout,
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GdkGravity anchor)
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{
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layout->rect_anchor = anchor;
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}
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/**
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* gdk_popup_layout_get_rect_anchor:
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* @layout: a #GdkPopupLayout
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*
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* Returns the anchor position on the anchor rectangle.
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*
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* Returns: the anchor on the anchor rectangle.
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*/
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GdkGravity
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gdk_popup_layout_get_rect_anchor (GdkPopupLayout *layout)
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{
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return layout->rect_anchor;
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}
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/**
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* gdk_popup_layout_set_surface_anchor:
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* @layout: a #GdkPopupLayout
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* @anchor: the new popup surface anchor
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*
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* Set the anchor on the popup surface.
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*/
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void
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gdk_popup_layout_set_surface_anchor (GdkPopupLayout *layout,
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GdkGravity anchor)
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{
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layout->surface_anchor = anchor;
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}
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/**
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* gdk_popup_layout_get_surface_anchor:
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* @layout: a #GdkPopupLayout
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*
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* Returns the anchor position on the popup surface.
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*
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* Returns: the anchor on the popup surface.
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*/
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GdkGravity
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gdk_popup_layout_get_surface_anchor (GdkPopupLayout *layout)
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{
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return layout->surface_anchor;
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}
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/**
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* gdk_popup_layout_set_anchor_hints:
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* @layout: a #GdkPopupLayout
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* @anchor_hints: the new #GdkAnchorHints
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*
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* Set new anchor hints.
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*
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* The set @anchor_hints determines how @surface will be moved if the anchor
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* points cause it to move off-screen. For example, %GDK_ANCHOR_FLIP_X will
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* replace %GDK_GRAVITY_NORTH_WEST with %GDK_GRAVITY_NORTH_EAST and vice versa
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* if @surface extends beyond the left or right edges of the monitor.
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*/
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void
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gdk_popup_layout_set_anchor_hints (GdkPopupLayout *layout,
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GdkAnchorHints anchor_hints)
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{
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layout->anchor_hints = anchor_hints;
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}
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/**
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* gdk_popup_layout_get_anchor_hints:
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* @layout: a #GdkPopupLayout
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*
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* Get the #GdkAnchorHints.
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*
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* Returns: the #GdkAnchorHints.
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*/
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GdkAnchorHints
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gdk_popup_layout_get_anchor_hints (GdkPopupLayout *layout)
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{
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return layout->anchor_hints;
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}
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/**
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* gdk_popup_layout_set_offset:
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* @layout: a #GdkPopupLayout
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* @dx: x delta to offset the anchor rectangle with
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* @dy: y delta to offset the anchor rectangle with
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*
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* Offset the position of the anchor rectangle with the given delta.
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*/
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void
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gdk_popup_layout_set_offset (GdkPopupLayout *layout,
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int dx,
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int dy)
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{
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layout->dx = dx;
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layout->dy = dy;
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}
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/**
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* gdk_popup_layout_get_offset:
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* @layout: a #GdkPopupLayout
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* @dx: a pointer to where to store the delta x coordinate
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* @dy: a pointer to where to store the delta y coordinate
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*
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* Get the delta the anchor rectangle is offset with
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*/
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void
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gdk_popup_layout_get_offset (GdkPopupLayout *layout,
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int *dx,
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int *dy)
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{
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if (dx)
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*dx = layout->dx;
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if (dy)
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*dy = layout->dy;
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}
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