forked from AuroraMiddleware/gtk
5dfe788e9e
The equivalent to cairo_matrix_multiply (a, b, c) is graphene_matrix_multiply (c, b, a). graphene_matrix_multiply (a, b, c) may not be called with b and c being the same matrix.
320 lines
11 KiB
C
320 lines
11 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2014,2015 Benjamin Otte
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*
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* Authors: 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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#include "config.h"
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#include "gtkrendericonprivate.h"
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#include "gtkcssimagebuiltinprivate.h"
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#include "gtkcssimagevalueprivate.h"
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#include "gtkcssshadowsvalueprivate.h"
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#include "gtkcssstyleprivate.h"
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#include "gtkcsstransformvalueprivate.h"
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#include "gtksnapshotprivate.h"
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#include <math.h>
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void
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gtk_css_style_render_icon (GtkCssStyle *style,
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cairo_t *cr,
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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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GtkCssImageBuiltinType builtin_type)
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{
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const GtkCssValue *shadows;
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cairo_matrix_t matrix, transform_matrix, saved_matrix;
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GtkCssImage *image;
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g_return_if_fail (GTK_IS_CSS_STYLE (style));
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g_return_if_fail (cr != NULL);
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image = _gtk_css_image_value_get_image (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SOURCE));
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if (image == NULL)
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return;
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cairo_get_matrix (cr, &saved_matrix);
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shadows = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW);
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cairo_translate (cr, x, y);
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if (_gtk_css_transform_value_get_matrix (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_TRANSFORM), &transform_matrix))
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{
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/* XXX: Implement -gtk-icon-transform-origin instead of hardcoding "50% 50%" here */
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cairo_matrix_init_translate (&matrix, width / 2, height / 2);
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cairo_matrix_multiply (&matrix, &transform_matrix, &matrix);
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cairo_matrix_translate (&matrix, - width / 2, - height / 2);
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if (_gtk_css_shadows_value_is_none (shadows))
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{
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cairo_transform (cr, &matrix);
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gtk_css_image_builtin_draw (image, cr, width, height, builtin_type);
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}
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else
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{
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cairo_push_group (cr);
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cairo_transform (cr, &matrix);
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gtk_css_image_builtin_draw (image, cr, width, height, builtin_type);
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cairo_pop_group_to_source (cr);
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_gtk_css_shadows_value_paint_icon (shadows, cr);
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cairo_paint (cr);
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}
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}
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cairo_set_matrix (cr, &saved_matrix);
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}
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void
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gtk_css_style_snapshot_icon (GtkCssStyle *style,
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GtkSnapshot *snapshot,
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double width,
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double height,
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GtkCssImageBuiltinType builtin_type)
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{
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const GtkCssValue *shadows, *transform;
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cairo_matrix_t transform_matrix;
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graphene_matrix_t m1, m2, m3, saved_matrix;
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GtkCssImage *image;
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g_return_if_fail (GTK_IS_CSS_STYLE (style));
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g_return_if_fail (snapshot != NULL);
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image = _gtk_css_image_value_get_image (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SOURCE));
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if (image == NULL)
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return;
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shadows = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW);
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transform = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_TRANSFORM);
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if (!_gtk_css_transform_value_get_matrix (transform, &transform_matrix))
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return;
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graphene_matrix_init_from_matrix (&saved_matrix, gtk_snapshot_get_transform (snapshot));
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/* XXX: Implement -gtk-icon-transform-origin instead of hardcoding "50% 50%" here */
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graphene_matrix_init_translate (&m1, &(graphene_point3d_t)GRAPHENE_POINT3D_INIT(width / 2.0, height / 2.0, 0));
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graphene_matrix_init_from_2d (&m2, transform_matrix.xx, transform_matrix.yx,
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transform_matrix.xy, transform_matrix.yy,
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transform_matrix.x0, transform_matrix.y0);
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graphene_matrix_multiply (&m2, &m1, &m3);
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graphene_matrix_init_translate (&m2, &(graphene_point3d_t)GRAPHENE_POINT3D_INIT(- width / 2.0, - height / 2.0, 0));
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graphene_matrix_multiply (&m2, &m3, &m1);
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gtk_snapshot_transform (snapshot, &m1);
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if (!_gtk_css_shadows_value_is_none (shadows))
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{
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g_warning ("Painting shadows not implemented for textures yet.");
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}
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gtk_css_image_builtin_snapshot (image, snapshot, width, height, builtin_type);
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gtk_snapshot_set_transform (snapshot, &saved_matrix);
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}
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static gboolean
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get_surface_extents (cairo_surface_t *surface,
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GdkRectangle *out_extents)
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{
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cairo_t *cr;
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gboolean result;
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cr = cairo_create (surface);
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result = gdk_cairo_get_clip_rectangle (cr, out_extents);
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cairo_destroy (cr);
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return result;
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}
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void
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gtk_css_style_render_icon_surface (GtkCssStyle *style,
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cairo_t *cr,
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cairo_surface_t *surface,
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double x,
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double y)
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{
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const GtkCssValue *shadows;
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cairo_matrix_t matrix, transform_matrix, saved_matrix;
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GdkRectangle extents;
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g_return_if_fail (GTK_IS_CSS_STYLE (style));
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g_return_if_fail (cr != NULL);
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g_return_if_fail (surface != NULL);
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shadows = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW);
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if (!get_surface_extents (surface, &extents))
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{
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/* weird infinite surface, no special magic for you */
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cairo_set_source_surface (cr, surface, x, y);
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_gtk_css_shadows_value_paint_icon (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW), cr);
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cairo_paint (cr);
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return;
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}
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cairo_get_matrix (cr, &saved_matrix);
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cairo_translate (cr, x + extents.x, y + extents.y);
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if (_gtk_css_transform_value_get_matrix (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_TRANSFORM), &transform_matrix))
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{
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cairo_pattern_t *pattern;
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/* XXX: Implement -gtk-icon-transform-origin instead of hardcoding "50% 50%" here */
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cairo_matrix_init_translate (&matrix, extents.width / 2, extents.height / 2);
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cairo_matrix_multiply (&matrix, &transform_matrix, &matrix);
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cairo_matrix_translate (&matrix, - extents.width / 2, - extents.height / 2);
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if (cairo_matrix_invert (&matrix) != CAIRO_STATUS_SUCCESS)
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{
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g_assert_not_reached ();
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}
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cairo_matrix_translate (&matrix, extents.x, extents.y);
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pattern = cairo_pattern_create_for_surface (surface);
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cairo_pattern_set_matrix (pattern, &matrix);
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cairo_set_source (cr, pattern);
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cairo_pattern_destroy (pattern);
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_gtk_css_shadows_value_paint_icon (shadows, cr);
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cairo_paint (cr);
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}
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cairo_set_matrix (cr, &saved_matrix);
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}
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static void
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gtk_cairo_rectangle_transform (cairo_rectangle_int_t *dest,
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const cairo_rectangle_int_t *src,
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const cairo_matrix_t *matrix)
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{
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double x1, x2, x3, x4;
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double y1, y2, y3, y4;
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g_return_if_fail (dest != NULL);
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g_return_if_fail (src != NULL);
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g_return_if_fail (matrix != NULL);
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x1 = src->x;
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y1 = src->y;
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x2 = src->x + src->width;
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y2 = src->y;
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x3 = src->x + src->width;
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y3 = src->y + src->height;
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x4 = src->x;
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y4 = src->y + src->height;
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cairo_matrix_transform_point (matrix, &x1, &y1);
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cairo_matrix_transform_point (matrix, &x2, &y2);
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cairo_matrix_transform_point (matrix, &x3, &y3);
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cairo_matrix_transform_point (matrix, &x4, &y4);
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dest->x = floor (MIN (MIN (x1, x2), MIN (x3, x4)));
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dest->y = floor (MIN (MIN (y1, y2), MIN (y3, y4)));
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dest->width = ceil (MAX (MAX (x1, x2), MAX (x3, x4))) - dest->x;
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dest->height = ceil (MAX (MAX (y1, y2), MAX (y3, y4))) - dest->y;
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}
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void
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gtk_css_style_render_icon_get_extents (GtkCssStyle *style,
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GdkRectangle *extents,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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cairo_matrix_t transform_matrix, matrix;
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GtkBorder border;
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GdkRectangle rect;
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g_return_if_fail (GTK_IS_CSS_STYLE (style));
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g_return_if_fail (extents != NULL);
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extents->x = x;
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extents->y = y;
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extents->width = width;
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extents->height = height;
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if (!_gtk_css_transform_value_get_matrix (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_TRANSFORM), &transform_matrix))
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return;
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cairo_matrix_init_translate (&matrix, x + width / 2.0, y + height / 2.0);
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cairo_matrix_multiply (&matrix, &transform_matrix, &matrix);
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/* need to round to full pixels */
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rect.x = - (width + 1) / 2;
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rect.y = - (height + 1) / 2;
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rect.width = (width + 1) & ~1;
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rect.height = (height + 1) & ~1;
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gtk_cairo_rectangle_transform (extents, &rect, &matrix);
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_gtk_css_shadows_value_get_extents (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW), &border);
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extents->x -= border.left;
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extents->y -= border.top;
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extents->width += border.left + border.right;
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extents->height += border.top + border.bottom;
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}
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void
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gtk_css_style_snapshot_icon_texture (GtkCssStyle *style,
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GtkSnapshot *snapshot,
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GskTexture *texture)
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{
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const GtkCssValue *shadows, *transform;
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cairo_matrix_t transform_matrix;
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graphene_matrix_t m1, m2, m3, saved_matrix;
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graphene_rect_t bounds;
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GskRenderNode *node;
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int width, height;
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g_return_if_fail (GTK_IS_CSS_STYLE (style));
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g_return_if_fail (snapshot != NULL);
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g_return_if_fail (GSK_IS_TEXTURE (texture));
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shadows = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_SHADOW);
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transform = gtk_css_style_get_value (style, GTK_CSS_PROPERTY_ICON_TRANSFORM);
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width = gsk_texture_get_width (texture);
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height = gsk_texture_get_height (texture);
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if (!_gtk_css_transform_value_get_matrix (transform, &transform_matrix))
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return;
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graphene_matrix_init_from_matrix (&saved_matrix, gtk_snapshot_get_transform (snapshot));
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/* XXX: Implement -gtk-icon-transform-origin instead of hardcoding "50% 50%" here */
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graphene_matrix_init_translate (&m1, &(graphene_point3d_t)GRAPHENE_POINT3D_INIT(width / 2.0, height / 2.0, 0));
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graphene_matrix_init_from_2d (&m2, transform_matrix.xx, transform_matrix.yx,
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transform_matrix.xy, transform_matrix.yy,
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transform_matrix.x0, transform_matrix.y0);
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graphene_matrix_multiply (&m2, &m1, &m3);
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graphene_matrix_init_translate (&m2, &(graphene_point3d_t)GRAPHENE_POINT3D_INIT(- width / 2.0, - height / 2.0, 0));
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graphene_matrix_multiply (&m2, &m3, &m1);
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gtk_snapshot_transform (snapshot, &m1);
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graphene_rect_init (&bounds, 0, 0, width, height);
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node = gtk_snapshot_append (snapshot, &bounds, "Icon");
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if (!_gtk_css_shadows_value_is_none (shadows))
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{
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g_warning ("Painting shadows not implemented for textures yet.");
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}
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gsk_render_node_set_texture (node, texture);
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gsk_render_node_unref (node);
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gtk_snapshot_set_transform (snapshot, &saved_matrix);
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}
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