91 lines
4.7 KiB
C
91 lines
4.7 KiB
C
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/* GTK - The GIMP Toolkit
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* Copyright (C) 2019 Benjamin Otte <otte@gnome.org>
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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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#pragma once
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#include "gtkcsstypesprivate.h"
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#include "gtktypes.h"
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G_BEGIN_DECLS
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/*
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* The idea behind this file is that it provides an on-stack representation
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* for all the CSS boxes one can have to deal with in the CSS box model so that
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* higher level code can use convenient and readable function calls instead of
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* doing complicated math.
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*
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* However, because computing all those rectangles is prohibitively expensive,
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* this struct does it lazily.
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* And then we inline all the code, so that whenever we use this struct, the
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* compiler can optimize out the parts we don't need in that particular use
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* case.
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*/
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typedef struct _GtkCssBoxes GtkCssBoxes;
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/* ahem...
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* Let's extend GtkCssArea a bit here. */
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#define GTK_CSS_AREA_MARGIN_BOX (3)
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#define GTK_CSS_AREA_OUTLINE_BOX (4)
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#define GTK_CSS_AREA_N_BOXES (5)
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struct _GtkCssBoxes
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{
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GtkCssStyle *style;
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GskRoundedRect box[GTK_CSS_AREA_N_BOXES];
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gboolean has_rect[GTK_CSS_AREA_N_BOXES]; /* TRUE if we have initialized just the bounds rect */
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gboolean has_box[GTK_CSS_AREA_N_BOXES]; /* TRUE if we have initialized the whole box */
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};
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static inline void gtk_css_boxes_init (GtkCssBoxes *boxes,
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GtkWidget *widget);
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static inline void gtk_css_boxes_init_content_box (GtkCssBoxes *boxes,
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GtkCssStyle *style,
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double x,
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double y,
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double width,
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double height);
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static inline void gtk_css_boxes_init_border_box (GtkCssBoxes *boxes,
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GtkCssStyle *style,
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double x,
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double y,
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double width,
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double height);
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static inline const graphene_rect_t * gtk_css_boxes_get_rect (GtkCssBoxes *boxes,
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GtkCssArea area);
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static inline const graphene_rect_t * gtk_css_boxes_get_margin_rect (GtkCssBoxes *boxes);
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static inline const graphene_rect_t * gtk_css_boxes_get_border_rect (GtkCssBoxes *boxes);
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static inline const graphene_rect_t * gtk_css_boxes_get_padding_rect (GtkCssBoxes *boxes);
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static inline const graphene_rect_t * gtk_css_boxes_get_content_rect (GtkCssBoxes *boxes);
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static inline const graphene_rect_t * gtk_css_boxes_get_outline_rect (GtkCssBoxes *boxes);
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static inline const GskRoundedRect * gtk_css_boxes_get_box (GtkCssBoxes *boxes,
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GtkCssArea area);
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static inline const GskRoundedRect * gtk_css_boxes_get_border_box (GtkCssBoxes *boxes);
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static inline const GskRoundedRect * gtk_css_boxes_get_padding_box (GtkCssBoxes *boxes);
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static inline const GskRoundedRect * gtk_css_boxes_get_content_box (GtkCssBoxes *boxes);
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static inline const GskRoundedRect * gtk_css_boxes_get_outline_box (GtkCssBoxes *boxes);
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G_END_DECLS
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/* and finally include the actual code for the functions */
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#include "gtkcssboxesimplprivate.h"
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