From 86719e1d350abfdde06d641948bcd411a219bed9 Mon Sep 17 00:00:00 2001 From: Benjamin Otte Date: Sat, 11 Jun 2011 03:57:57 +0200 Subject: [PATCH] gtk: Add GtkRoundedBox CSS drawing operates on rounded boxes a lot, so it makes sense to split them out instead of duplicating them everywhere. --- gtk/Makefile.am | 2 + gtk/gtkroundedbox.c | 195 +++++++++++++++++++++++++++++++++++++ gtk/gtkroundedboxprivate.h | 66 +++++++++++++ 3 files changed, 263 insertions(+) create mode 100644 gtk/gtkroundedbox.c create mode 100644 gtk/gtkroundedboxprivate.h diff --git a/gtk/Makefile.am b/gtk/Makefile.am index 03f4381bb..493a80d2d 100644 --- a/gtk/Makefile.am +++ b/gtk/Makefile.am @@ -425,6 +425,7 @@ gtk_private_h_sources = \ gtkrecentchooserdefault.h \ gtkrecentchooserprivate.h \ gtkrecentchooserutils.h \ + gtkroundedboxprivate.h \ gtkscaleprivate.h \ gtksearchengine.h \ gtksearchenginesimple.h \ @@ -618,6 +619,7 @@ gtk_base_c_sources = \ gtkrecentchooser.c \ gtkrecentfilter.c \ gtkrecentmanager.c \ + gtkroundedbox.c \ gtkscale.c \ gtkscalebutton.c \ gtkscrollable.c \ diff --git a/gtk/gtkroundedbox.c b/gtk/gtkroundedbox.c new file mode 100644 index 000000000..001a5c29b --- /dev/null +++ b/gtk/gtkroundedbox.c @@ -0,0 +1,195 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 2011 Benjamin Otte + * + * 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, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "config.h" + +#include "gtkroundedboxprivate.h" + +#include + +/** + * _gtk_rounded_box_init_rect: + * @box: box to initialize + * @x: x coordinate of box + * @y: y coordinate of box + * @width: width of box + * @height: height of box + * + * Initializes the given @box to represent the given rectangle. + * The + **/ +void +_gtk_rounded_box_init_rect (GtkRoundedBox *box, + double x, + double y, + double width, + double height) +{ + box->box.x = x; + box->box.y = y; + box->box.width = width; + box->box.height = height; + memset (&box->border_radius, 0, sizeof (GtkCssBorderRadius)); +} + +void +_gtk_rounded_box_apply_border_radius (GtkRoundedBox *box, + GtkThemingEngine *engine, + GtkStateFlags state, + GtkJunctionSides junction) +{ + GtkCssBorderCornerRadius *top_left_radius, *top_right_radius; + GtkCssBorderCornerRadius *bottom_left_radius, *bottom_right_radius; + + gtk_theming_engine_get (engine, state, + /* Can't use border-radius as it's an int for + * backwards compat */ + "border-top-left-radius", &top_left_radius, + "border-top-right-radius", &top_right_radius, + "border-bottom-right-radius", &bottom_right_radius, + "border-bottom-left-radius", &bottom_left_radius, + NULL); + + if (top_left_radius && (junction & GTK_JUNCTION_CORNER_TOPLEFT) == 0) + box->border_radius.top_left = *top_left_radius; + if (top_right_radius && (junction & GTK_JUNCTION_CORNER_TOPRIGHT) == 0) + box->border_radius.top_right = *top_right_radius; + if (bottom_right_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMRIGHT) == 0) + box->border_radius.bottom_right = *bottom_right_radius; + if (bottom_left_radius && (junction & GTK_JUNCTION_CORNER_BOTTOMLEFT) == 0) + box->border_radius.bottom_left = *bottom_left_radius; + + g_free (top_left_radius); + g_free (top_right_radius); + g_free (bottom_right_radius); + g_free (bottom_left_radius); +} + +void +_gtk_rounded_box_grow (GtkRoundedBox *box, + double top, + double right, + double bottom, + double left) +{ + + box->box.x -= left; + box->box.width += left + right; + g_warn_if_fail (box->box.width > 0); + box->box.y -= top; + box->box.height += top + bottom; + g_warn_if_fail (box->box.height > 0); + + if (box->border_radius.top_left.horizontal) + box->border_radius.top_left.horizontal = MAX (0, box->border_radius.top_left.horizontal + left); + if (box->border_radius.top_left.vertical) + box->border_radius.top_left.vertical = MAX (0, box->border_radius.top_left.vertical + top); + if (box->border_radius.top_right.horizontal) + box->border_radius.top_right.horizontal = MAX (0, box->border_radius.top_right.horizontal + right); + if (box->border_radius.top_right.vertical) + box->border_radius.top_right.vertical = MAX (0, box->border_radius.top_right.vertical + top); + if (box->border_radius.bottom_right.horizontal) + box->border_radius.bottom_right.horizontal = MAX (0, box->border_radius.bottom_right.horizontal + right); + if (box->border_radius.bottom_right.vertical) + box->border_radius.bottom_right.vertical = MAX (0, box->border_radius.bottom_right.vertical + bottom); + if (box->border_radius.bottom_left.horizontal) + box->border_radius.bottom_left.horizontal = MAX (0, box->border_radius.bottom_left.horizontal + left); + if (box->border_radius.bottom_left.vertical) + box->border_radius.bottom_left.vertical = MAX (0, box->border_radius.bottom_left.vertical + bottom); +} + +void +_gtk_rounded_box_shrink (GtkRoundedBox *box, + double top, + double right, + double bottom, + double left) +{ + _gtk_rounded_box_grow (box, -top, -right, -bottom, -left); +} + +void +_gtk_rounded_box_move (GtkRoundedBox *box, + double dx, + double dy) +{ + box->box.x += dx; + box->box.y += dy; +} + +static void +_cairo_ellipsis (cairo_t *cr, + double xc, double yc, + double xradius, double yradius, + double angle1, double angle2) +{ + if (xradius <= 0.0 || yradius <= 0.0) + { + cairo_line_to (cr, xc, yc); + return; + } + + cairo_save (cr); + cairo_translate (cr, xc, yc); + cairo_scale (cr, xradius, yradius); + cairo_arc (cr, 0, 0, 1.0, angle1, angle2); + cairo_restore (cr); +} + +void +_gtk_rounded_box_path (const GtkRoundedBox *box, + cairo_t *cr) +{ + cairo_new_sub_path (cr); + + _cairo_ellipsis (cr, + box->box.x + box->border_radius.top_left.horizontal, + box->box.y + box->border_radius.top_left.vertical, + box->border_radius.top_left.horizontal, + box->border_radius.top_left.vertical, + G_PI, 3 * G_PI / 2); + _cairo_ellipsis (cr, + box->box.x + box->box.width - box->border_radius.top_right.horizontal, + box->box.y + box->border_radius.top_right.vertical, + box->border_radius.top_right.horizontal, + box->border_radius.top_right.vertical, + - G_PI / 2, 0); + _cairo_ellipsis (cr, + box->box.x + box->box.width - box->border_radius.bottom_right.horizontal, + box->box.y + box->box.height - box->border_radius.bottom_right.vertical, + box->border_radius.bottom_right.horizontal, + box->border_radius.bottom_right.vertical, + 0, G_PI / 2); + _cairo_ellipsis (cr, + box->box.x + box->border_radius.bottom_left.horizontal, + box->box.y + box->box.height - box->border_radius.bottom_left.vertical, + box->border_radius.bottom_left.horizontal, + box->border_radius.bottom_left.vertical, + G_PI / 2, G_PI); +} + +void +_gtk_rounded_box_clip_path (const GtkRoundedBox *box, + cairo_t *cr) +{ + cairo_rectangle (cr, + box->box.x, box->box.y, + box->box.width, box->box.height); +} + diff --git a/gtk/gtkroundedboxprivate.h b/gtk/gtkroundedboxprivate.h new file mode 100644 index 000000000..bd4adb4b2 --- /dev/null +++ b/gtk/gtkroundedboxprivate.h @@ -0,0 +1,66 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 2011 Benjamin Otte + * + * 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, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GTK_ROUNDED_BOX_PRIVATE_H__ +#define __GTK_ROUNDED_BOX_PRIVATE_H__ + +#include +#include +#include +#include + +#include "gtkcsstypesprivate.h" + +G_BEGIN_DECLS + +typedef struct _GtkRoundedBox GtkRoundedBox; + +struct _GtkRoundedBox { + /*< private >*/ + cairo_rectangle_t box; + GtkCssBorderRadius border_radius; +}; + +void _gtk_rounded_box_init_rect (GtkRoundedBox *box, + double x, + double y, + double width, + double height); + +void _gtk_rounded_box_apply_border_radius (GtkRoundedBox *box, + GtkThemingEngine *engine, + GtkStateFlags state, + GtkJunctionSides junction); +void _gtk_rounded_box_shrink (GtkRoundedBox *box, + double top, + double right, + double bottom, + double left); +void _gtk_rounded_box_move (GtkRoundedBox *box, + double dx, + double dy); + +void _gtk_rounded_box_path (const GtkRoundedBox *box, + cairo_t *cr); +void _gtk_rounded_box_clip_path (const GtkRoundedBox *box, + cairo_t *cr); + +G_END_DECLS + +#endif /* __GTK_ROUNDED_BOX_PRIVATE_H__ */ -- 2.43.2