forked from AuroraMiddleware/gtk
2494 lines
74 KiB
C
2494 lines
74 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2010 Carlos Garnacho <carlosg@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 "gtkrender.h"
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#include "gtkrenderprivate.h"
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#include <math.h>
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#include "gtkborderimageprivate.h"
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#include "gtkcsscornervalueprivate.h"
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#include "gtkcssenginevalueprivate.h"
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#include "gtkcssenumvalueprivate.h"
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#include "gtkcssimagebuiltinprivate.h"
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#include "gtkcssimagevalueprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkcssrgbavalueprivate.h"
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#include "gtkcssshadowsvalueprivate.h"
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#include "gtkcsstransformvalueprivate.h"
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#include "gtkhslaprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtkthemingbackgroundprivate.h"
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#include "fallback-c89.c"
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static gboolean
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render_icon_image (GtkStyleContext *context,
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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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{
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const GtkCssValue *shadows;
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cairo_matrix_t matrix, transform_matrix;
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GtkCssImage *image;
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image = _gtk_css_image_value_get_image (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ICON_SOURCE));
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if (image == NULL)
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return TRUE;
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if (GTK_IS_CSS_IMAGE_BUILTIN (image))
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return FALSE;
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shadows = _gtk_style_context_peek_property (context, 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_style_context_peek_property (context, 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_draw (image, cr, width, height);
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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_draw (image, cr, width, height);
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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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return TRUE;
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}
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static void
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gtk_do_render_check (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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const GdkRGBA *fg_color, *bg_color;
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GtkStateFlags flags;
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gint exterior_size, interior_size, thickness, pad;
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GtkBorderStyle border_style;
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GtkBorder border;
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gint border_width;
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if (render_icon_image (context, cr, x, y, width, height))
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return;
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flags = gtk_style_context_get_state (context);
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cairo_save (cr);
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fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
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bg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
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border.top = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
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border.right = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
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border.bottom = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
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border.left = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
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border_style = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
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border_width = MIN (MIN (border.top, border.bottom),
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MIN (border.left, border.right));
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exterior_size = MIN (width, height);
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if (exterior_size % 2 == 0) /* Ensure odd */
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exterior_size -= 1;
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/* FIXME: thickness */
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thickness = 1;
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pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
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interior_size = MAX (1, exterior_size - 2 * pad);
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if (interior_size < 7)
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{
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interior_size = 7;
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pad = MAX (0, (exterior_size - interior_size) / 2);
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}
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x -= (1 + exterior_size - (gint) width) / 2;
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y -= (1 + exterior_size - (gint) height) / 2;
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if (border_style == GTK_BORDER_STYLE_SOLID)
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{
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const GdkRGBA *border_color;
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cairo_set_line_width (cr, border_width);
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border_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
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cairo_rectangle (cr, x + 0.5, y + 0.5, exterior_size - 1, exterior_size - 1);
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gdk_cairo_set_source_rgba (cr, bg_color);
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cairo_fill_preserve (cr);
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gdk_cairo_set_source_rgba (cr, border_color);
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cairo_stroke (cr);
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}
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gdk_cairo_set_source_rgba (cr, fg_color);
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if (flags & GTK_STATE_FLAG_INCONSISTENT)
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{
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int line_thickness = MAX (1, (3 + interior_size * 2) / 7);
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cairo_rectangle (cr,
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x + pad,
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y + pad + (1 + interior_size - line_thickness) / 2,
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interior_size,
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line_thickness);
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cairo_fill (cr);
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}
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else
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{
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if (flags & GTK_STATE_FLAG_CHECKED)
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{
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cairo_translate (cr,
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x + pad, y + pad);
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cairo_scale (cr, interior_size / 7., interior_size / 7.);
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cairo_rectangle (cr, 0, 0, 7, 7);
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cairo_clip (cr);
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cairo_move_to (cr, 7.0, 0.0);
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cairo_line_to (cr, 7.5, 1.0);
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cairo_curve_to (cr, 5.3, 2.0,
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4.3, 4.0,
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3.5, 7.0);
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cairo_curve_to (cr, 3.0, 5.7,
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1.3, 4.7,
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0.0, 4.7);
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cairo_line_to (cr, 0.2, 3.5);
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cairo_curve_to (cr, 1.1, 3.5,
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2.3, 4.3,
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3.0, 5.0);
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cairo_curve_to (cr, 1.0, 3.9,
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2.4, 4.1,
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3.2, 4.9);
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cairo_curve_to (cr, 3.5, 3.1,
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5.2, 2.0,
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7.0, 0.0);
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cairo_fill (cr);
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}
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}
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cairo_restore (cr);
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}
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/**
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* gtk_render_check:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders a checkmark (as in a #GtkCheckButton).
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*
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* The %GTK_STATE_FLAG_CHECKED state determines whether the check is
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* on or off, and %GTK_STATE_FLAG_INCONSISTENT determines whether it
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* should be marked as undefined.
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*
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* Typical checkmark rendering:
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*
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* 
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*
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* Since: 3.0
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**/
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void
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gtk_render_check (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
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if (width <= 0 || height <= 0)
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return;
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cairo_save (cr);
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cairo_new_path (cr);
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gtk_do_render_check (context, cr, x, y, width, height);
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cairo_restore (cr);
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}
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static void
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gtk_do_render_option (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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GtkStateFlags flags;
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const GdkRGBA *fg_color, *bg_color;
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gint exterior_size, interior_size, pad, thickness, border_width;
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GtkBorderStyle border_style;
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GtkBorder border;
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if (render_icon_image (context, cr, x, y, width, height))
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return;
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flags = gtk_style_context_get_state (context);
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cairo_save (cr);
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fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
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bg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
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border.top = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
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border.right = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
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border.bottom = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
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border.left = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
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border_style = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
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exterior_size = MIN (width, height);
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border_width = MIN (MIN (border.top, border.bottom),
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MIN (border.left, border.right));
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if (exterior_size % 2 == 0) /* Ensure odd */
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exterior_size -= 1;
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x -= (1 + exterior_size - width) / 2;
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y -= (1 + exterior_size - height) / 2;
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if (border_style == GTK_BORDER_STYLE_SOLID)
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{
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const GdkRGBA *border_color;
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cairo_set_line_width (cr, border_width);
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border_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
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cairo_new_sub_path (cr);
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cairo_arc (cr,
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x + exterior_size / 2.,
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y + exterior_size / 2.,
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(exterior_size - 1) / 2.,
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0, 2 * G_PI);
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gdk_cairo_set_source_rgba (cr, bg_color);
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cairo_fill_preserve (cr);
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gdk_cairo_set_source_rgba (cr, border_color);
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cairo_stroke (cr);
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}
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gdk_cairo_set_source_rgba (cr, fg_color);
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/* FIXME: thickness */
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thickness = 1;
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if (flags & GTK_STATE_FLAG_INCONSISTENT)
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{
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gint line_thickness;
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pad = thickness + MAX (1, (exterior_size - 2 * thickness) / 9);
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interior_size = MAX (1, exterior_size - 2 * pad);
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if (interior_size < 7)
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{
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interior_size = 7;
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pad = MAX (0, (exterior_size - interior_size) / 2);
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}
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line_thickness = MAX (1, (3 + interior_size * 2) / 7);
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cairo_rectangle (cr,
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x + pad,
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y + pad + (interior_size - line_thickness) / 2.,
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interior_size,
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line_thickness);
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cairo_fill (cr);
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}
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if (flags & GTK_STATE_FLAG_CHECKED)
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{
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pad = thickness + MAX (1, 2 * (exterior_size - 2 * thickness) / 9);
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interior_size = MAX (1, exterior_size - 2 * pad);
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if (interior_size < 5)
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{
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interior_size = 7;
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pad = MAX (0, (exterior_size - interior_size) / 2);
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}
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cairo_new_sub_path (cr);
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cairo_arc (cr,
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x + pad + interior_size / 2.,
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y + pad + interior_size / 2.,
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interior_size / 2.,
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0, 2 * G_PI);
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cairo_fill (cr);
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}
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cairo_restore (cr);
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}
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/**
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* gtk_render_option:
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* @context: a #GtkStyleContext
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* @cr: a #cairo_t
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* @x: X origin of the rectangle
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* @y: Y origin of the rectangle
|
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* @width: rectangle width
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* @height: rectangle height
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*
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* Renders an option mark (as in a #GtkRadioButton), the %GTK_STATE_FLAG_CHECKED
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* state will determine whether the option is on or off, and
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* %GTK_STATE_FLAG_INCONSISTENT whether it should be marked as undefined.
|
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*
|
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* Typical option mark rendering:
|
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*
|
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* 
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*
|
||
* Since: 3.0
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**/
|
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void
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gtk_render_option (GtkStyleContext *context,
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cairo_t *cr,
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gdouble x,
|
||
gdouble y,
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gdouble width,
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gdouble height)
|
||
{
|
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (cr != NULL);
|
||
|
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if (width <= 0 || height <= 0)
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||
return;
|
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|
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cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_option (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_arrow (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble angle,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble size)
|
||
{
|
||
double line_width;
|
||
const GdkRGBA *color;
|
||
|
||
if (render_icon_image (context, cr, x, y, size, size))
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
|
||
line_width = size / 3.0 / sqrt (2);
|
||
cairo_set_line_width (cr, line_width);
|
||
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
|
||
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
|
||
|
||
cairo_translate (cr, x + size / 2.0, y + size / 2.0);
|
||
cairo_rotate (cr, angle - G_PI_2);
|
||
cairo_translate (cr, size / 4.0, 0);
|
||
|
||
cairo_scale (cr,
|
||
(size / (size + line_width)),
|
||
(size / (size + line_width)));
|
||
|
||
cairo_move_to (cr, -size / 2.0, -size / 2.0);
|
||
cairo_rel_line_to (cr, size / 2.0, size / 2.0);
|
||
cairo_rel_line_to (cr, - size / 2.0, size / 2.0);
|
||
|
||
color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
||
gdk_cairo_set_source_rgba (cr, color);
|
||
cairo_stroke (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_arrow:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @angle: arrow angle from 0 to 2 * %G_PI, being 0 the arrow pointing to the north
|
||
* @x: X origin of the render area
|
||
* @y: Y origin of the render area
|
||
* @size: square side for render area
|
||
*
|
||
* Renders an arrow pointing to @angle.
|
||
*
|
||
* Typical arrow rendering at 0, 1&solidus;2 π, π and 3&solidus;2 π:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_arrow (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble angle,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble size)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (size <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_style_context_save (context);
|
||
gtk_style_context_add_class (context, GTK_STYLE_CLASS_ARROW);
|
||
|
||
gtk_do_render_arrow (context, cr, angle, x, y, size);
|
||
|
||
gtk_style_context_restore (context);
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
color_shade (const GdkRGBA *color,
|
||
gdouble factor,
|
||
GdkRGBA *color_return)
|
||
{
|
||
GtkHSLA hsla;
|
||
|
||
_gtk_hsla_init_from_rgba (&hsla, color);
|
||
_gtk_hsla_shade (&hsla, &hsla, factor);
|
||
_gdk_rgba_init_from_hsla (color_return, &hsla);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_background (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
gtk_theming_background_render (context,
|
||
cr,
|
||
x, y,
|
||
width, height,
|
||
gtk_style_context_get_junction_sides (context));
|
||
}
|
||
|
||
/**
|
||
* gtk_render_background:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders the background of an element.
|
||
*
|
||
* Typical background rendering, showing the effect of
|
||
* `background-image`, `border-width` and `border-radius`:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0.
|
||
**/
|
||
void
|
||
gtk_render_background (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_background (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
hide_border_sides (double border[4],
|
||
GtkBorderStyle border_style[4],
|
||
guint hidden_side)
|
||
{
|
||
guint i;
|
||
|
||
for (i = 0; i < 4; i++)
|
||
{
|
||
if (hidden_side & (1 << i) ||
|
||
border_style[i] == GTK_BORDER_STYLE_NONE ||
|
||
border_style[i] == GTK_BORDER_STYLE_HIDDEN)
|
||
border[i] = 0;
|
||
}
|
||
}
|
||
|
||
static void
|
||
render_frame_fill (cairo_t *cr,
|
||
GtkRoundedBox *border_box,
|
||
const double border_width[4],
|
||
GdkRGBA colors[4],
|
||
guint hidden_side)
|
||
{
|
||
GtkRoundedBox padding_box;
|
||
guint i, j;
|
||
|
||
padding_box = *border_box;
|
||
_gtk_rounded_box_shrink (&padding_box,
|
||
border_width[GTK_CSS_TOP],
|
||
border_width[GTK_CSS_RIGHT],
|
||
border_width[GTK_CSS_BOTTOM],
|
||
border_width[GTK_CSS_LEFT]);
|
||
|
||
if (hidden_side == 0 &&
|
||
gdk_rgba_equal (&colors[0], &colors[1]) &&
|
||
gdk_rgba_equal (&colors[0], &colors[2]) &&
|
||
gdk_rgba_equal (&colors[0], &colors[3]))
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &colors[0]);
|
||
|
||
_gtk_rounded_box_path (border_box, cr);
|
||
_gtk_rounded_box_path (&padding_box, cr);
|
||
cairo_fill (cr);
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < 4; i++)
|
||
{
|
||
if (hidden_side & (1 << i))
|
||
continue;
|
||
|
||
for (j = 0; j < 4; j++)
|
||
{
|
||
if (hidden_side & (1 << j))
|
||
continue;
|
||
|
||
if (i == j ||
|
||
(gdk_rgba_equal (&colors[i], &colors[j])))
|
||
{
|
||
/* We were already painted when i == j */
|
||
if (i > j)
|
||
break;
|
||
|
||
if (j == 0)
|
||
_gtk_rounded_box_path_top (border_box, &padding_box, cr);
|
||
else if (j == 1)
|
||
_gtk_rounded_box_path_right (border_box, &padding_box, cr);
|
||
else if (j == 2)
|
||
_gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
|
||
else if (j == 3)
|
||
_gtk_rounded_box_path_left (border_box, &padding_box, cr);
|
||
}
|
||
}
|
||
/* We were already painted when i == j */
|
||
if (i > j)
|
||
continue;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &colors[i]);
|
||
|
||
cairo_fill (cr);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_stroke_style (cairo_t *cr,
|
||
double line_width,
|
||
GtkBorderStyle style,
|
||
double length)
|
||
{
|
||
double segments[2];
|
||
double n;
|
||
|
||
cairo_set_line_width (cr, line_width);
|
||
|
||
if (style == GTK_BORDER_STYLE_DOTTED)
|
||
{
|
||
n = round (0.5 * length / line_width);
|
||
|
||
segments[0] = 0;
|
||
segments[1] = n ? length / n : 2;
|
||
cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
|
||
|
||
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
|
||
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
|
||
}
|
||
else
|
||
{
|
||
n = length / line_width;
|
||
/* Optimize the common case of an integer-sized rectangle
|
||
* Again, we care about focus rectangles.
|
||
*/
|
||
if (n == nearbyint (n))
|
||
{
|
||
segments[0] = 1;
|
||
segments[1] = 2;
|
||
}
|
||
else
|
||
{
|
||
n = round ((1. / 3) * n);
|
||
|
||
segments[0] = n ? (1. / 3) * length / n : 1;
|
||
segments[1] = 2 * segments[0];
|
||
}
|
||
cairo_set_dash (cr, segments, G_N_ELEMENTS (segments), 0);
|
||
|
||
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
|
||
cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
|
||
}
|
||
}
|
||
|
||
static void
|
||
render_frame_stroke (cairo_t *cr,
|
||
GtkRoundedBox *border_box,
|
||
const double border_width[4],
|
||
GdkRGBA colors[4],
|
||
guint hidden_side,
|
||
GtkBorderStyle stroke_style)
|
||
{
|
||
gboolean different_colors, different_borders;
|
||
GtkRoundedBox stroke_box;
|
||
guint i;
|
||
|
||
different_colors = !gdk_rgba_equal (&colors[0], &colors[1]) ||
|
||
!gdk_rgba_equal (&colors[0], &colors[2]) ||
|
||
!gdk_rgba_equal (&colors[0], &colors[3]);
|
||
different_borders = border_width[0] != border_width[1] ||
|
||
border_width[0] != border_width[2] ||
|
||
border_width[0] != border_width[3] ;
|
||
|
||
stroke_box = *border_box;
|
||
_gtk_rounded_box_shrink (&stroke_box,
|
||
border_width[GTK_CSS_TOP] / 2.0,
|
||
border_width[GTK_CSS_RIGHT] / 2.0,
|
||
border_width[GTK_CSS_BOTTOM] / 2.0,
|
||
border_width[GTK_CSS_LEFT] / 2.0);
|
||
|
||
if (!different_colors && !different_borders && hidden_side == 0)
|
||
{
|
||
double length = 0;
|
||
|
||
/* FAST PATH:
|
||
* Mostly expected to trigger for focus rectangles */
|
||
for (i = 0; i < 4; i++)
|
||
{
|
||
length += _gtk_rounded_box_guess_length (&stroke_box, i);
|
||
_gtk_rounded_box_path_side (&stroke_box, cr, i);
|
||
}
|
||
|
||
gdk_cairo_set_source_rgba (cr, &colors[0]);
|
||
set_stroke_style (cr, border_width[0], stroke_style, length);
|
||
cairo_stroke (cr);
|
||
}
|
||
else
|
||
{
|
||
GtkRoundedBox padding_box;
|
||
|
||
padding_box = *border_box;
|
||
_gtk_rounded_box_path (&padding_box, cr);
|
||
_gtk_rounded_box_shrink (&padding_box,
|
||
border_width[GTK_CSS_TOP],
|
||
border_width[GTK_CSS_RIGHT],
|
||
border_width[GTK_CSS_BOTTOM],
|
||
border_width[GTK_CSS_LEFT]);
|
||
|
||
for (i = 0; i < 4; i++)
|
||
{
|
||
if (hidden_side & (1 << i))
|
||
continue;
|
||
|
||
cairo_save (cr);
|
||
|
||
if (i == 0)
|
||
_gtk_rounded_box_path_top (border_box, &padding_box, cr);
|
||
else if (i == 1)
|
||
_gtk_rounded_box_path_right (border_box, &padding_box, cr);
|
||
else if (i == 2)
|
||
_gtk_rounded_box_path_bottom (border_box, &padding_box, cr);
|
||
else if (i == 3)
|
||
_gtk_rounded_box_path_left (border_box, &padding_box, cr);
|
||
cairo_clip (cr);
|
||
|
||
_gtk_rounded_box_path_side (&stroke_box, cr, i);
|
||
|
||
gdk_cairo_set_source_rgba (cr, &colors[i]);
|
||
set_stroke_style (cr,
|
||
border_width[i],
|
||
stroke_style,
|
||
_gtk_rounded_box_guess_length (&stroke_box, i));
|
||
cairo_stroke (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
render_border (cairo_t *cr,
|
||
GtkRoundedBox *border_box,
|
||
const double border_width[4],
|
||
guint hidden_side,
|
||
GdkRGBA colors[4],
|
||
GtkBorderStyle border_style[4])
|
||
{
|
||
guint i, j;
|
||
|
||
cairo_save (cr);
|
||
|
||
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
|
||
|
||
for (i = 0; i < 4; i++)
|
||
{
|
||
if (hidden_side & (1 << i))
|
||
continue;
|
||
|
||
/* NB: code below divides by this value */
|
||
/* a border smaller than this will not noticably modify
|
||
* pixels on screen, and since we don't compare with 0,
|
||
* we'll use this value */
|
||
if (border_width[i] < 1.0 / 1024)
|
||
continue;
|
||
|
||
switch (border_style[i])
|
||
{
|
||
case GTK_BORDER_STYLE_NONE:
|
||
case GTK_BORDER_STYLE_HIDDEN:
|
||
case GTK_BORDER_STYLE_SOLID:
|
||
break;
|
||
case GTK_BORDER_STYLE_INSET:
|
||
if (i == 1 || i == 2)
|
||
color_shade (&colors[i], 1.8, &colors[i]);
|
||
break;
|
||
case GTK_BORDER_STYLE_OUTSET:
|
||
if (i == 0 || i == 3)
|
||
color_shade (&colors[i], 1.8, &colors[i]);
|
||
break;
|
||
case GTK_BORDER_STYLE_DOTTED:
|
||
case GTK_BORDER_STYLE_DASHED:
|
||
{
|
||
guint dont_draw = hidden_side;
|
||
|
||
for (j = 0; j < 4; j++)
|
||
{
|
||
if (border_style[j] == border_style[i])
|
||
hidden_side |= (1 << j);
|
||
else
|
||
dont_draw |= (1 << j);
|
||
}
|
||
|
||
render_frame_stroke (cr, border_box, border_width, colors, dont_draw, border_style[i]);
|
||
}
|
||
break;
|
||
case GTK_BORDER_STYLE_DOUBLE:
|
||
{
|
||
GtkRoundedBox other_box;
|
||
double other_border[4];
|
||
guint dont_draw = hidden_side;
|
||
|
||
for (j = 0; j < 4; j++)
|
||
{
|
||
if (border_style[j] == GTK_BORDER_STYLE_DOUBLE)
|
||
hidden_side |= (1 << j);
|
||
else
|
||
dont_draw |= (1 << j);
|
||
|
||
other_border[i] = border_width[i] / 3;
|
||
}
|
||
|
||
render_frame_fill (cr, border_box, other_border, colors, dont_draw);
|
||
|
||
other_box = *border_box;
|
||
_gtk_rounded_box_shrink (&other_box,
|
||
2 * other_border[GTK_CSS_TOP],
|
||
2 * other_border[GTK_CSS_RIGHT],
|
||
2 * other_border[GTK_CSS_BOTTOM],
|
||
2 * other_border[GTK_CSS_LEFT]);
|
||
render_frame_fill (cr, &other_box, other_border, colors, dont_draw);
|
||
}
|
||
break;
|
||
case GTK_BORDER_STYLE_GROOVE:
|
||
case GTK_BORDER_STYLE_RIDGE:
|
||
{
|
||
GtkRoundedBox other_box;
|
||
GdkRGBA other_colors[4];
|
||
guint dont_draw = hidden_side;
|
||
double other_border[4];
|
||
|
||
for (j = 0; j < 4; j++)
|
||
{
|
||
other_colors[j] = colors[j];
|
||
if ((j == 0 || j == 3) ^ (border_style[j] == GTK_BORDER_STYLE_RIDGE))
|
||
color_shade (&other_colors[j], 1.8, &other_colors[j]);
|
||
else
|
||
color_shade (&colors[j], 1.8, &colors[j]);
|
||
if (border_style[j] == GTK_BORDER_STYLE_GROOVE ||
|
||
border_style[j] == GTK_BORDER_STYLE_RIDGE)
|
||
hidden_side |= (1 << j);
|
||
else
|
||
dont_draw |= (1 << j);
|
||
other_border[i] = border_width[i] / 2;
|
||
}
|
||
|
||
render_frame_fill (cr, border_box, other_border, colors, dont_draw);
|
||
|
||
other_box = *border_box;
|
||
_gtk_rounded_box_shrink (&other_box,
|
||
other_border[GTK_CSS_TOP],
|
||
other_border[GTK_CSS_RIGHT],
|
||
other_border[GTK_CSS_BOTTOM],
|
||
other_border[GTK_CSS_LEFT]);
|
||
render_frame_fill (cr, &other_box, other_border, other_colors, dont_draw);
|
||
}
|
||
break;
|
||
default:
|
||
g_assert_not_reached ();
|
||
break;
|
||
}
|
||
}
|
||
|
||
render_frame_fill (cr, border_box, border_width, colors, hidden_side);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
render_frame_internal (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
guint hidden_side,
|
||
GtkJunctionSides junction)
|
||
{
|
||
GtkBorderImage border_image;
|
||
double border_width[4];
|
||
|
||
border_width[0] = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
|
||
border_width[1] = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
|
||
border_width[2] = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
|
||
border_width[3] = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
|
||
|
||
if (_gtk_border_image_init (&border_image, context))
|
||
{
|
||
_gtk_border_image_render (&border_image, border_width, cr, x, y, width, height);
|
||
}
|
||
else
|
||
{
|
||
GtkBorderStyle border_style[4];
|
||
GtkRoundedBox border_box;
|
||
GdkRGBA colors[4];
|
||
|
||
/* Optimize the most common case of "This widget has no border" */
|
||
if (border_width[0] == 0 &&
|
||
border_width[1] == 0 &&
|
||
border_width[2] == 0 &&
|
||
border_width[3] == 0)
|
||
return;
|
||
|
||
border_style[0] = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
|
||
border_style[1] = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
|
||
border_style[2] = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
|
||
border_style[3] = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
|
||
|
||
hide_border_sides (border_width, border_style, hidden_side);
|
||
|
||
colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
|
||
colors[1] = *_gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR));
|
||
colors[2] = *_gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR));
|
||
colors[3] = *_gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_COLOR));
|
||
|
||
_gtk_rounded_box_init_rect (&border_box, x, y, width, height);
|
||
_gtk_rounded_box_apply_border_radius_for_context (&border_box, context, junction);
|
||
|
||
render_border (cr, &border_box, border_width, hidden_side, colors, border_style);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_frame (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
GtkJunctionSides junction;
|
||
|
||
junction = gtk_style_context_get_junction_sides (context);
|
||
|
||
render_frame_internal (context, cr,
|
||
x, y, width, height,
|
||
0, junction);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_frame:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders a frame around the rectangle defined by @x, @y, @width, @height.
|
||
*
|
||
* Examples of frame rendering, showing the effect of `border-image`,
|
||
* `border-color`, `border-width`, `border-radius` and junctions:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_frame (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_frame (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_expander (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
GtkStateFlags flags;
|
||
const GdkRGBA *outline_color, *fg_color;
|
||
double vertical_overshoot;
|
||
int diameter;
|
||
double radius;
|
||
double interp; /* interpolation factor for center position */
|
||
double x_double_horz, y_double_horz;
|
||
double x_double_vert, y_double_vert;
|
||
double x_double, y_double;
|
||
gdouble angle;
|
||
gint line_width;
|
||
gboolean is_rtl;
|
||
gdouble progress;
|
||
|
||
if (render_icon_image (context, cr, x, y, width, height))
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
flags = gtk_style_context_get_state (context);
|
||
|
||
fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
||
outline_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
|
||
|
||
is_rtl = (gtk_style_context_get_state (context) & GTK_STATE_FLAG_DIR_RTL);
|
||
line_width = 1;
|
||
progress = (flags & GTK_STATE_FLAG_CHECKED) ? 1 : 0;
|
||
|
||
if (!gtk_style_context_has_class (context, GTK_STYLE_CLASS_HORIZONTAL))
|
||
{
|
||
if (is_rtl)
|
||
angle = (G_PI) - ((G_PI / 2) * progress);
|
||
else
|
||
angle = (G_PI / 2) * progress;
|
||
}
|
||
else
|
||
{
|
||
if (is_rtl)
|
||
angle = (G_PI / 2) + ((G_PI / 2) * progress);
|
||
else
|
||
angle = (G_PI / 2) - ((G_PI / 2) * progress);
|
||
}
|
||
|
||
interp = progress;
|
||
|
||
/* Compute distance that the stroke extends beyonds the end
|
||
* of the triangle we draw.
|
||
*/
|
||
vertical_overshoot = line_width / 2.0 * (1. / tan (G_PI / 8));
|
||
|
||
/* For odd line widths, we end the vertical line of the triangle
|
||
* at a half pixel, so we round differently.
|
||
*/
|
||
if (line_width % 2 == 1)
|
||
vertical_overshoot = ceil (0.5 + vertical_overshoot) - 0.5;
|
||
else
|
||
vertical_overshoot = ceil (vertical_overshoot);
|
||
|
||
/* Adjust the size of the triangle we draw so that the entire stroke fits
|
||
*/
|
||
diameter = (gint) MAX (3, width - 2 * vertical_overshoot);
|
||
|
||
/* If the line width is odd, we want the diameter to be even,
|
||
* and vice versa, so force the sum to be odd. This relationship
|
||
* makes the point of the triangle look right.
|
||
*/
|
||
diameter -= (1 - (diameter + line_width) % 2);
|
||
|
||
radius = diameter / 2.;
|
||
|
||
/* Adjust the center so that the stroke is properly aligned with
|
||
* the pixel grid. The center adjustment is different for the
|
||
* horizontal and vertical orientations. For intermediate positions
|
||
* we interpolate between the two.
|
||
*/
|
||
x_double_vert = floor ((x + width / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
|
||
y_double_vert = (y + height / 2) - 0.5;
|
||
|
||
x_double_horz = (x + width / 2) - 0.5;
|
||
y_double_horz = floor ((y + height / 2) - (radius + line_width) / 2.) + (radius + line_width) / 2.;
|
||
|
||
x_double = x_double_vert * (1 - interp) + x_double_horz * interp;
|
||
y_double = y_double_vert * (1 - interp) + y_double_horz * interp;
|
||
|
||
cairo_translate (cr, x_double, y_double);
|
||
cairo_rotate (cr, angle);
|
||
|
||
cairo_move_to (cr, - radius / 2., - radius);
|
||
cairo_line_to (cr, radius / 2., 0);
|
||
cairo_line_to (cr, - radius / 2., radius);
|
||
cairo_close_path (cr);
|
||
|
||
cairo_set_line_width (cr, line_width);
|
||
|
||
gdk_cairo_set_source_rgba (cr, fg_color);
|
||
|
||
cairo_fill_preserve (cr);
|
||
|
||
gdk_cairo_set_source_rgba (cr, outline_color);
|
||
cairo_stroke (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_expander:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders an expander (as used in #GtkTreeView and #GtkExpander) in the area
|
||
* defined by @x, @y, @width, @height. The state %GTK_STATE_FLAG_CHECKED
|
||
* determines whether the expander is collapsed or expanded.
|
||
*
|
||
* Typical expander rendering:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_expander (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_expander (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_focus (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
GtkBorderStyle border_style[4];
|
||
GtkRoundedBox border_box;
|
||
double border_width[4];
|
||
GdkRGBA colors[4];
|
||
|
||
border_style[0] = _gtk_css_border_style_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_OUTLINE_STYLE));
|
||
if (border_style[0] != GTK_BORDER_STYLE_NONE)
|
||
{
|
||
int offset;
|
||
|
||
border_style[1] = border_style[2] = border_style[3] = border_style[0];
|
||
border_width[0] = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_OUTLINE_WIDTH), 100);
|
||
border_width[3] = border_width[2] = border_width[1] = border_width[0];
|
||
colors[0] = *_gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_OUTLINE_COLOR));
|
||
colors[3] = colors[2] = colors[1] = colors[0];
|
||
offset = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_OUTLINE_OFFSET), 100);
|
||
|
||
_gtk_rounded_box_init_rect (&border_box, x, y, width, height);
|
||
_gtk_rounded_box_shrink (&border_box,
|
||
- border_width[GTK_CSS_TOP] - offset,
|
||
- border_width[GTK_CSS_RIGHT] - offset,
|
||
- border_width[GTK_CSS_LEFT] - offset,
|
||
- border_width[GTK_CSS_BOTTOM] - offset);
|
||
_gtk_rounded_box_apply_outline_radius_for_context (&border_box, context, GTK_JUNCTION_NONE);
|
||
|
||
render_border (cr, &border_box, border_width, 0, colors, border_style);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* gtk_render_focus:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders a focus indicator on the rectangle determined by @x, @y, @width, @height.
|
||
*
|
||
* Typical focus rendering:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_focus (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_focus (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
prepare_context_for_layout (cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
PangoLayout *layout)
|
||
{
|
||
const PangoMatrix *matrix;
|
||
|
||
matrix = pango_context_get_matrix (pango_layout_get_context (layout));
|
||
|
||
cairo_move_to (cr, x, y);
|
||
|
||
if (matrix)
|
||
{
|
||
cairo_matrix_t cairo_matrix;
|
||
|
||
cairo_matrix_init (&cairo_matrix,
|
||
matrix->xx, matrix->yx,
|
||
matrix->xy, matrix->yy,
|
||
matrix->x0, matrix->y0);
|
||
|
||
cairo_transform (cr, &cairo_matrix);
|
||
}
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_layout (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
PangoLayout *layout)
|
||
{
|
||
const GdkRGBA *fg_color;
|
||
|
||
cairo_save (cr);
|
||
fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
||
|
||
prepare_context_for_layout (cr, x, y, layout);
|
||
|
||
_gtk_css_shadows_value_paint_layout (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW),
|
||
cr, layout);
|
||
|
||
gdk_cairo_set_source_rgba (cr, fg_color);
|
||
pango_cairo_show_layout (cr, layout);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_layout:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin
|
||
* @y: Y origin
|
||
* @layout: the #PangoLayout to render
|
||
*
|
||
* Renders @layout on the coordinates @x, @y
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_layout (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
PangoLayout *layout)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (PANGO_IS_LAYOUT (layout));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_layout (context, cr, x, y, layout);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_line (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x0,
|
||
gdouble y0,
|
||
gdouble x1,
|
||
gdouble y1)
|
||
{
|
||
const GdkRGBA *color;
|
||
|
||
cairo_save (cr);
|
||
|
||
color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
||
|
||
cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
|
||
cairo_set_line_width (cr, 1);
|
||
|
||
cairo_move_to (cr, x0 + 0.5, y0 + 0.5);
|
||
cairo_line_to (cr, x1 + 0.5, y1 + 0.5);
|
||
|
||
gdk_cairo_set_source_rgba (cr, color);
|
||
cairo_stroke (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_line:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x0: X coordinate for the origin of the line
|
||
* @y0: Y coordinate for the origin of the line
|
||
* @x1: X coordinate for the end of the line
|
||
* @y1: Y coordinate for the end of the line
|
||
*
|
||
* Renders a line from (x0, y0) to (x1, y1).
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_line (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x0,
|
||
gdouble y0,
|
||
gdouble x1,
|
||
gdouble y1)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_line (context, cr, x0, y0, x1, y1);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_slider (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkOrientation orientation)
|
||
{
|
||
gtk_do_render_background (context, cr, x, y, width, height);
|
||
gtk_do_render_frame (context, cr, x, y, width, height);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_slider:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
* @orientation: orientation of the slider
|
||
*
|
||
* Renders a slider (as in #GtkScale) in the rectangle defined by @x, @y,
|
||
* @width, @height. @orientation defines whether the slider is vertical
|
||
* or horizontal.
|
||
*
|
||
* Typical slider rendering:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_slider (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkOrientation orientation)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_slider (context, cr, x, y, width, height, orientation);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_frame_gap (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkPositionType gap_side,
|
||
gdouble xy0_gap,
|
||
gdouble xy1_gap)
|
||
{
|
||
GtkJunctionSides junction;
|
||
gint border_width;
|
||
GtkCssValue *corner[4];
|
||
gdouble x0, y0, x1, y1, xc = 0.0, yc = 0.0, wc = 0.0, hc = 0.0;
|
||
GtkBorder border;
|
||
|
||
junction = gtk_style_context_get_junction_sides (context);
|
||
|
||
border.top = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100);
|
||
border.right = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100);
|
||
border.bottom = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100);
|
||
border.left = _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100);
|
||
corner[GTK_CSS_TOP_LEFT] = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_LEFT_RADIUS);
|
||
corner[GTK_CSS_TOP_RIGHT] = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_RIGHT_RADIUS);
|
||
corner[GTK_CSS_BOTTOM_LEFT] = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_LEFT_RADIUS);
|
||
corner[GTK_CSS_BOTTOM_RIGHT] = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_RIGHT_RADIUS);
|
||
|
||
border_width = MIN (MIN (border.top, border.bottom),
|
||
MIN (border.left, border.right));
|
||
|
||
cairo_save (cr);
|
||
|
||
switch (gap_side)
|
||
{
|
||
case GTK_POS_TOP:
|
||
xc = x + xy0_gap + border_width;
|
||
yc = y;
|
||
wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
|
||
hc = border_width;
|
||
|
||
if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_LEFT], width))
|
||
junction |= GTK_JUNCTION_CORNER_TOPLEFT;
|
||
|
||
if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_TOP_RIGHT], width))
|
||
junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
|
||
break;
|
||
case GTK_POS_BOTTOM:
|
||
xc = x + xy0_gap + border_width;
|
||
yc = y + height - border_width;
|
||
wc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
|
||
hc = border_width;
|
||
|
||
if (xy0_gap < _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_LEFT], width))
|
||
junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
|
||
|
||
if (xy1_gap > width - _gtk_css_corner_value_get_x (corner[GTK_CSS_BOTTOM_RIGHT], width))
|
||
junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
|
||
|
||
break;
|
||
case GTK_POS_LEFT:
|
||
xc = x;
|
||
yc = y + xy0_gap + border_width;
|
||
wc = border_width;
|
||
hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
|
||
|
||
if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_LEFT], height))
|
||
junction |= GTK_JUNCTION_CORNER_TOPLEFT;
|
||
|
||
if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_LEFT], height))
|
||
junction |= GTK_JUNCTION_CORNER_BOTTOMLEFT;
|
||
|
||
break;
|
||
case GTK_POS_RIGHT:
|
||
xc = x + width - border_width;
|
||
yc = y + xy0_gap + border_width;
|
||
wc = border_width;
|
||
hc = MAX (xy1_gap - xy0_gap - 2 * border_width, 0);
|
||
|
||
if (xy0_gap < _gtk_css_corner_value_get_y (corner[GTK_CSS_TOP_RIGHT], height))
|
||
junction |= GTK_JUNCTION_CORNER_TOPRIGHT;
|
||
|
||
if (xy1_gap > height - _gtk_css_corner_value_get_y (corner[GTK_CSS_BOTTOM_RIGHT], height))
|
||
junction |= GTK_JUNCTION_CORNER_BOTTOMRIGHT;
|
||
|
||
break;
|
||
}
|
||
|
||
cairo_clip_extents (cr, &x0, &y0, &x1, &y1);
|
||
cairo_rectangle (cr, x0, y0, x1 - x0, yc - y0);
|
||
cairo_rectangle (cr, x0, yc, xc - x0, hc);
|
||
cairo_rectangle (cr, xc + wc, yc, x1 - (xc + wc), hc);
|
||
cairo_rectangle (cr, x0, yc + hc, x1 - x0, y1 - (yc + hc));
|
||
cairo_clip (cr);
|
||
|
||
render_frame_internal (context, cr,
|
||
x, y, width, height,
|
||
0, junction);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_frame_gap:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
* @gap_side: side where the gap is
|
||
* @xy0_gap: initial coordinate (X or Y depending on @gap_side) for the gap
|
||
* @xy1_gap: end coordinate (X or Y depending on @gap_side) for the gap
|
||
*
|
||
* Renders a frame around the rectangle defined by (@x, @y, @width, @height),
|
||
* leaving a gap on one side. @xy0_gap and @xy1_gap will mean X coordinates
|
||
* for %GTK_POS_TOP and %GTK_POS_BOTTOM gap sides, and Y coordinates for
|
||
* %GTK_POS_LEFT and %GTK_POS_RIGHT.
|
||
*
|
||
* Typical rendering of a frame with a gap:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_frame_gap (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkPositionType gap_side,
|
||
gdouble xy0_gap,
|
||
gdouble xy1_gap)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
g_return_if_fail (xy0_gap <= xy1_gap);
|
||
g_return_if_fail (xy0_gap >= 0);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
if (gap_side == GTK_POS_LEFT ||
|
||
gap_side == GTK_POS_RIGHT)
|
||
g_return_if_fail (xy1_gap <= height);
|
||
else
|
||
g_return_if_fail (xy1_gap <= width);
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_frame_gap (context, cr,
|
||
x, y, width, height, gap_side,
|
||
xy0_gap, xy1_gap);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_extension (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkPositionType gap_side)
|
||
{
|
||
GtkJunctionSides junction = 0;
|
||
guint hidden_side = 0;
|
||
|
||
switch (gap_side)
|
||
{
|
||
case GTK_POS_LEFT:
|
||
junction = GTK_JUNCTION_LEFT;
|
||
hidden_side = (1 << GTK_CSS_LEFT);
|
||
break;
|
||
case GTK_POS_RIGHT:
|
||
junction = GTK_JUNCTION_RIGHT;
|
||
hidden_side = (1 << GTK_CSS_RIGHT);
|
||
break;
|
||
case GTK_POS_TOP:
|
||
junction = GTK_JUNCTION_TOP;
|
||
hidden_side = (1 << GTK_CSS_TOP);
|
||
break;
|
||
case GTK_POS_BOTTOM:
|
||
junction = GTK_JUNCTION_BOTTOM;
|
||
hidden_side = (1 << GTK_CSS_BOTTOM);
|
||
break;
|
||
}
|
||
|
||
gtk_theming_background_render (context,
|
||
cr,
|
||
x, y,
|
||
width, height,
|
||
junction);
|
||
|
||
render_frame_internal (context, cr,
|
||
x, y, width, height,
|
||
hidden_side, junction);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_extension:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
* @gap_side: side where the gap is
|
||
*
|
||
* Renders a extension (as in a #GtkNotebook tab) in the rectangle
|
||
* defined by @x, @y, @width, @height. The side where the extension
|
||
* connects to is defined by @gap_side.
|
||
*
|
||
* Typical extension rendering:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_extension (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height,
|
||
GtkPositionType gap_side)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_extension (context, cr, x, y, width, height, gap_side);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
render_dot (cairo_t *cr,
|
||
const GdkRGBA *lighter,
|
||
const GdkRGBA *darker,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble size)
|
||
{
|
||
size = CLAMP ((gint) size, 2, 3);
|
||
|
||
if (size == 2)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, lighter);
|
||
cairo_rectangle (cr, x, y, 1, 1);
|
||
cairo_rectangle (cr, x + 1, y + 1, 1, 1);
|
||
cairo_fill (cr);
|
||
}
|
||
else if (size == 3)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, lighter);
|
||
cairo_rectangle (cr, x, y, 2, 1);
|
||
cairo_rectangle (cr, x, y, 1, 2);
|
||
cairo_fill (cr);
|
||
|
||
gdk_cairo_set_source_rgba (cr, darker);
|
||
cairo_rectangle (cr, x + 1, y + 1, 2, 1);
|
||
cairo_rectangle (cr, x + 2, y, 1, 2);
|
||
cairo_fill (cr);
|
||
}
|
||
}
|
||
|
||
static void
|
||
add_path_line (cairo_t *cr,
|
||
gdouble x1,
|
||
gdouble y1,
|
||
gdouble x2,
|
||
gdouble y2)
|
||
{
|
||
/* Adjust endpoints */
|
||
if (y1 == y2)
|
||
{
|
||
y1 += 0.5;
|
||
y2 += 0.5;
|
||
x2 += 1;
|
||
}
|
||
else if (x1 == x2)
|
||
{
|
||
x1 += 0.5;
|
||
x2 += 0.5;
|
||
y2 += 1;
|
||
}
|
||
|
||
cairo_move_to (cr, x1, y1);
|
||
cairo_line_to (cr, x2, y2);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_handle (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
const GdkRGBA *bg_color;
|
||
GdkRGBA lighter, darker;
|
||
GtkJunctionSides sides;
|
||
gint xx, yy;
|
||
|
||
gtk_render_background (context, cr, x, y, width, height);
|
||
gtk_render_frame (context, cr, x, y, width, height);
|
||
|
||
if (render_icon_image (context, cr, x, y, width, height))
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
|
||
cairo_set_line_width (cr, 1.0);
|
||
sides = gtk_style_context_get_junction_sides (context);
|
||
bg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BACKGROUND_COLOR));
|
||
|
||
color_shade (bg_color, 0.7, &darker);
|
||
color_shade (bg_color, 1.3, &lighter);
|
||
|
||
if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_GRIP))
|
||
{
|
||
/* reduce confusing values to a meaningful state */
|
||
if ((sides & (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)) == (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT))
|
||
sides &= ~GTK_JUNCTION_CORNER_TOPLEFT;
|
||
|
||
if ((sides & (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT)) == (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMLEFT))
|
||
sides &= ~GTK_JUNCTION_CORNER_TOPRIGHT;
|
||
|
||
if (sides == 0)
|
||
sides = GTK_JUNCTION_CORNER_BOTTOMRIGHT;
|
||
|
||
/* align drawing area to the connected side */
|
||
if (sides == GTK_JUNCTION_LEFT)
|
||
{
|
||
if (height < width)
|
||
width = height;
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
|
||
{
|
||
if (width < height)
|
||
height = width;
|
||
else if (height < width)
|
||
width = height;
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
|
||
{
|
||
/* make it square, aligning to bottom left */
|
||
if (width < height)
|
||
{
|
||
y += (height - width);
|
||
height = width;
|
||
}
|
||
else if (height < width)
|
||
width = height;
|
||
}
|
||
else if (sides == GTK_JUNCTION_RIGHT)
|
||
{
|
||
/* aligning to right */
|
||
if (height < width)
|
||
{
|
||
x += (width - height);
|
||
width = height;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
|
||
{
|
||
if (width < height)
|
||
height = width;
|
||
else if (height < width)
|
||
{
|
||
x += (width - height);
|
||
width = height;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
|
||
{
|
||
/* make it square, aligning to bottom right */
|
||
if (width < height)
|
||
{
|
||
y += (height - width);
|
||
height = width;
|
||
}
|
||
else if (height < width)
|
||
{
|
||
x += (width - height);
|
||
width = height;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_TOP)
|
||
{
|
||
if (width < height)
|
||
height = width;
|
||
}
|
||
else if (sides == GTK_JUNCTION_BOTTOM)
|
||
{
|
||
/* align to bottom */
|
||
if (width < height)
|
||
{
|
||
y += (height - width);
|
||
height = width;
|
||
}
|
||
}
|
||
else
|
||
g_assert_not_reached ();
|
||
|
||
if (sides == GTK_JUNCTION_LEFT ||
|
||
sides == GTK_JUNCTION_RIGHT)
|
||
{
|
||
gint xi;
|
||
|
||
xi = x;
|
||
|
||
while (xi < x + width)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, x, y, x, y + height);
|
||
cairo_stroke (cr);
|
||
xi++;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, xi, y, xi, y + height);
|
||
cairo_stroke (cr);
|
||
xi += 2;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_TOP ||
|
||
sides == GTK_JUNCTION_BOTTOM)
|
||
{
|
||
gint yi;
|
||
|
||
yi = y;
|
||
|
||
while (yi < y + height)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, x, yi, x + width, yi);
|
||
cairo_stroke (cr);
|
||
yi++;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, x, yi, x + width, yi);
|
||
cairo_stroke (cr);
|
||
yi += 2;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_TOPLEFT)
|
||
{
|
||
gint xi, yi;
|
||
|
||
xi = x + width;
|
||
yi = y + height;
|
||
|
||
while (xi > x + 3)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, xi, y, x, yi);
|
||
cairo_stroke (cr);
|
||
|
||
--xi;
|
||
--yi;
|
||
|
||
add_path_line (cr, xi, y, x, yi);
|
||
cairo_stroke (cr);
|
||
|
||
--xi;
|
||
--yi;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, xi, y, x, yi);
|
||
cairo_stroke (cr);
|
||
|
||
xi -= 3;
|
||
yi -= 3;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_TOPRIGHT)
|
||
{
|
||
gint xi, yi;
|
||
|
||
xi = x;
|
||
yi = y + height;
|
||
|
||
while (xi < (x + width - 3))
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, xi, y, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
++xi;
|
||
--yi;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, xi, y, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
++xi;
|
||
--yi;
|
||
|
||
add_path_line (cr, xi, y, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
xi += 3;
|
||
yi -= 3;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_BOTTOMLEFT)
|
||
{
|
||
gint xi, yi;
|
||
|
||
xi = x + width;
|
||
yi = y;
|
||
|
||
while (xi > x + 3)
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, x, yi, xi, y + height);
|
||
cairo_stroke (cr);
|
||
|
||
--xi;
|
||
++yi;
|
||
|
||
add_path_line (cr, x, yi, xi, y + height);
|
||
cairo_stroke (cr);
|
||
|
||
--xi;
|
||
++yi;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, x, yi, xi, y + height);
|
||
cairo_stroke (cr);
|
||
|
||
xi -= 3;
|
||
yi += 3;
|
||
}
|
||
}
|
||
else if (sides == GTK_JUNCTION_CORNER_BOTTOMRIGHT)
|
||
{
|
||
gint xi, yi;
|
||
|
||
xi = x;
|
||
yi = y;
|
||
|
||
while (xi < (x + width - 3))
|
||
{
|
||
gdk_cairo_set_source_rgba (cr, &lighter);
|
||
add_path_line (cr, xi, y + height, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
++xi;
|
||
++yi;
|
||
|
||
gdk_cairo_set_source_rgba (cr, &darker);
|
||
add_path_line (cr, xi, y + height, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
++xi;
|
||
++yi;
|
||
|
||
add_path_line (cr, xi, y + height, x + width, yi);
|
||
cairo_stroke (cr);
|
||
|
||
xi += 3;
|
||
yi += 3;
|
||
}
|
||
}
|
||
}
|
||
else if (gtk_style_context_has_class (context, GTK_STYLE_CLASS_PANE_SEPARATOR))
|
||
{
|
||
if (width > height)
|
||
for (xx = x + width / 2 - 15; xx <= x + width / 2 + 15; xx += 5)
|
||
render_dot (cr, &lighter, &darker, xx, y + height / 2 - 1, 3);
|
||
else
|
||
for (yy = y + height / 2 - 15; yy <= y + height / 2 + 15; yy += 5)
|
||
render_dot (cr, &lighter, &darker, x + width / 2 - 1, yy, 3);
|
||
}
|
||
else
|
||
{
|
||
for (yy = y; yy < y + height; yy += 3)
|
||
for (xx = x; xx < x + width; xx += 6)
|
||
{
|
||
render_dot (cr, &lighter, &darker, xx, yy, 2);
|
||
render_dot (cr, &lighter, &darker, xx + 3, yy + 1, 2);
|
||
}
|
||
}
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_handle:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders a handle (as in #GtkHandleBox, #GtkPaned and
|
||
* #GtkWindow’s resize grip), in the rectangle
|
||
* determined by @x, @y, @width, @height.
|
||
*
|
||
* Handles rendered for the paned and grip classes:
|
||
*
|
||
* 
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_handle (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_handle (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
void
|
||
gtk_render_paint_spinner (cairo_t *cr,
|
||
gdouble radius,
|
||
gdouble progress)
|
||
{
|
||
guint num_steps, step;
|
||
gdouble half;
|
||
gint i;
|
||
|
||
num_steps = 12;
|
||
|
||
if (progress >= 0)
|
||
step = (guint) (progress * num_steps);
|
||
else
|
||
step = 0;
|
||
|
||
cairo_save (cr);
|
||
|
||
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
|
||
cairo_set_line_width (cr, 2.0);
|
||
|
||
half = num_steps / 2;
|
||
|
||
for (i = 0; i < num_steps; i++)
|
||
{
|
||
gint inset = 0.7 * radius;
|
||
|
||
/* transparency is a function of time and intial value */
|
||
gdouble t = 1.0 - (gdouble) ((i + step) % num_steps) / num_steps;
|
||
gdouble xscale = - sin (i * G_PI / half);
|
||
gdouble yscale = - cos (i * G_PI / half);
|
||
|
||
cairo_push_group (cr);
|
||
|
||
cairo_move_to (cr,
|
||
(radius - inset) * xscale,
|
||
(radius - inset) * yscale);
|
||
cairo_line_to (cr,
|
||
radius * xscale,
|
||
radius * yscale);
|
||
|
||
cairo_stroke (cr);
|
||
|
||
cairo_pop_group_to_source (cr);
|
||
cairo_paint_with_alpha (cr, t);
|
||
}
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
render_spinner (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
const GdkRGBA *color;
|
||
gdouble radius;
|
||
|
||
radius = MIN (width / 2, height / 2);
|
||
|
||
color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
|
||
|
||
cairo_save (cr);
|
||
cairo_translate (cr, x + width / 2, y + height / 2);
|
||
|
||
_gtk_css_shadows_value_paint_spinner (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ICON_SHADOW),
|
||
cr,
|
||
radius,
|
||
-1);
|
||
|
||
gdk_cairo_set_source_rgba (cr, color);
|
||
gtk_render_paint_spinner (cr, radius, -1);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_activity (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
if (render_icon_image (context, cr, x, y, width, height))
|
||
return;
|
||
|
||
render_spinner (context, cr, x, y, width, height);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_activity:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @x: X origin of the rectangle
|
||
* @y: Y origin of the rectangle
|
||
* @width: rectangle width
|
||
* @height: rectangle height
|
||
*
|
||
* Renders an activity indicator (such as in #GtkSpinner).
|
||
* The state %GTK_STATE_FLAG_CHECKED determines whether there is
|
||
* activity going on.
|
||
*
|
||
* Since: 3.0
|
||
**/
|
||
void
|
||
gtk_render_activity (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
gdouble x,
|
||
gdouble y,
|
||
gdouble width,
|
||
gdouble height)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
if (width <= 0 || height <= 0)
|
||
return;
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_activity (context, cr, x, y, width, height);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
colorshift_source (cairo_t *cr,
|
||
gdouble shift)
|
||
{
|
||
cairo_pattern_t *source;
|
||
|
||
cairo_save (cr);
|
||
cairo_paint (cr);
|
||
|
||
source = cairo_pattern_reference (cairo_get_source (cr));
|
||
|
||
cairo_set_source_rgb (cr, shift, shift, shift);
|
||
cairo_set_operator (cr, CAIRO_OPERATOR_COLOR_DODGE);
|
||
|
||
cairo_mask (cr, source);
|
||
|
||
cairo_pattern_destroy (source);
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static GdkPixbuf *
|
||
scale_or_ref (GdkPixbuf *src,
|
||
gint width,
|
||
gint height)
|
||
{
|
||
if (width == gdk_pixbuf_get_width (src) &&
|
||
height == gdk_pixbuf_get_height (src))
|
||
return g_object_ref (src);
|
||
else
|
||
return gdk_pixbuf_scale_simple (src,
|
||
width, height,
|
||
GDK_INTERP_BILINEAR);
|
||
}
|
||
|
||
static GdkPixbuf *
|
||
gtk_do_render_icon_pixbuf (GtkStyleContext *context,
|
||
const GtkIconSource *source,
|
||
GtkIconSize size)
|
||
{
|
||
GdkPixbuf *scaled;
|
||
GdkPixbuf *stated;
|
||
GdkPixbuf *base_pixbuf;
|
||
GtkStateFlags state;
|
||
gint width = 1;
|
||
gint height = 1;
|
||
cairo_t *cr;
|
||
cairo_surface_t *surface;
|
||
gboolean wildcarded;
|
||
GtkCssImageEffect image_effect;
|
||
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
base_pixbuf = gtk_icon_source_get_pixbuf (source);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
state = gtk_style_context_get_state (context);
|
||
|
||
g_return_val_if_fail (base_pixbuf != NULL, NULL);
|
||
|
||
if (size != (GtkIconSize) -1 &&
|
||
!gtk_icon_size_lookup (size, &width, &height))
|
||
{
|
||
g_warning (G_STRLOC ": invalid icon size '%d'", size);
|
||
return NULL;
|
||
}
|
||
|
||
/* If the size was wildcarded, and we're allowed to scale, then scale; otherwise,
|
||
* leave it alone.
|
||
*/
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
wildcarded = gtk_icon_source_get_size_wildcarded (source);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
if (size != (GtkIconSize) -1 && wildcarded)
|
||
scaled = scale_or_ref (base_pixbuf, width, height);
|
||
else
|
||
scaled = g_object_ref (base_pixbuf);
|
||
|
||
/* If the state was wildcarded, then generate a state. */
|
||
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
|
||
wildcarded = gtk_icon_source_get_state_wildcarded (source);
|
||
G_GNUC_END_IGNORE_DEPRECATIONS;
|
||
|
||
if (!wildcarded)
|
||
return scaled;
|
||
|
||
image_effect = _gtk_css_image_effect_value_get
|
||
(_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_GTK_IMAGE_EFFECT));
|
||
|
||
if (image_effect == GTK_CSS_IMAGE_EFFECT_DIM ||
|
||
state & GTK_STATE_FLAG_INSENSITIVE)
|
||
{
|
||
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
|
||
gdk_pixbuf_get_width (scaled),
|
||
gdk_pixbuf_get_height (scaled));
|
||
cr = cairo_create (surface);
|
||
gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
|
||
cairo_paint_with_alpha (cr, 0.5);
|
||
|
||
cairo_destroy (cr);
|
||
|
||
g_object_unref (scaled);
|
||
stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
|
||
cairo_image_surface_get_width (surface),
|
||
cairo_image_surface_get_height (surface));
|
||
cairo_surface_destroy (surface);
|
||
}
|
||
else if (image_effect == GTK_CSS_IMAGE_EFFECT_HIGHLIGHT ||
|
||
state & GTK_STATE_FLAG_PRELIGHT)
|
||
{
|
||
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
|
||
gdk_pixbuf_get_width (scaled),
|
||
gdk_pixbuf_get_height (scaled));
|
||
|
||
cr = cairo_create (surface);
|
||
gdk_cairo_set_source_pixbuf (cr, scaled, 0, 0);
|
||
colorshift_source (cr, 0.10);
|
||
|
||
cairo_destroy (cr);
|
||
|
||
g_object_unref (scaled);
|
||
stated = gdk_pixbuf_get_from_surface (surface, 0, 0,
|
||
cairo_image_surface_get_width (surface),
|
||
cairo_image_surface_get_height (surface));
|
||
cairo_surface_destroy (surface);
|
||
}
|
||
else
|
||
stated = scaled;
|
||
|
||
return stated;
|
||
}
|
||
|
||
/**
|
||
* gtk_render_icon_pixbuf:
|
||
* @context: a #GtkStyleContext
|
||
* @source: the #GtkIconSource specifying the icon to render
|
||
* @size: (type int): the size to render the icon at. A size of (GtkIconSize) -1
|
||
* means render at the size of the source and don’t scale.
|
||
*
|
||
* Renders the icon specified by @source at the given @size, returning the result
|
||
* in a pixbuf.
|
||
*
|
||
* Returns: (transfer full): a newly-created #GdkPixbuf containing the rendered icon
|
||
*
|
||
* Since: 3.0
|
||
*
|
||
* Deprecated: 3.10: Use gtk_icon_theme_load_icon() instead.
|
||
**/
|
||
GdkPixbuf *
|
||
gtk_render_icon_pixbuf (GtkStyleContext *context,
|
||
const GtkIconSource *source,
|
||
GtkIconSize size)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
|
||
g_return_val_if_fail (size > GTK_ICON_SIZE_INVALID || size == -1, NULL);
|
||
g_return_val_if_fail (source != NULL, NULL);
|
||
|
||
return gtk_do_render_icon_pixbuf (context, source, size);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_icon (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
GdkPixbuf *pixbuf,
|
||
gdouble x,
|
||
gdouble y)
|
||
{
|
||
cairo_save (cr);
|
||
|
||
gdk_cairo_set_source_pixbuf (cr, pixbuf, x, y);
|
||
|
||
_gtk_css_shadows_value_paint_icon (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ICON_SHADOW), cr);
|
||
|
||
cairo_paint (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_icon:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @pixbuf: a #GdkPixbuf containing the icon to draw
|
||
* @x: X position for the @pixbuf
|
||
* @y: Y position for the @pixbuf
|
||
*
|
||
* Renders the icon in @pixbuf at the specified @x and @y coordinates.
|
||
*
|
||
* Since: 3.2
|
||
**/
|
||
void
|
||
gtk_render_icon (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
GdkPixbuf *pixbuf,
|
||
gdouble x,
|
||
gdouble y)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_icon (context, cr, pixbuf, x, y);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
static void
|
||
gtk_do_render_icon_surface (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
cairo_surface_t *surface,
|
||
gdouble x,
|
||
gdouble y)
|
||
{
|
||
cairo_save (cr);
|
||
|
||
cairo_set_source_surface (cr, surface, x, y);
|
||
|
||
_gtk_css_shadows_value_paint_icon (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_ICON_SHADOW), cr);
|
||
|
||
cairo_paint (cr);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/**
|
||
* gtk_render_icon_surface:
|
||
* @context: a #GtkStyleContext
|
||
* @cr: a #cairo_t
|
||
* @surface: a #cairo_surface_t containing the icon to draw
|
||
* @x: X position for the @icon
|
||
* @y: Y position for the @incon
|
||
*
|
||
* Renders the icon in @surface at the specified @x and @y coordinates.
|
||
*
|
||
* Since: 3.10
|
||
**/
|
||
void
|
||
gtk_render_icon_surface (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
cairo_surface_t *surface,
|
||
gdouble x,
|
||
gdouble y)
|
||
{
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
cairo_save (cr);
|
||
cairo_new_path (cr);
|
||
|
||
gtk_do_render_icon_surface (context, cr, surface, x, y);
|
||
|
||
cairo_restore (cr);
|
||
}
|
||
|
||
/*
|
||
* gtk_render_content_path:
|
||
* @context: style context to get style information from
|
||
* @cr: cairo context to add path to
|
||
* @x: x coordinate of CSS box
|
||
* @y: y coordinate of CSS box
|
||
* @width: width of CSS box
|
||
* @height: height of CSS box
|
||
*
|
||
* Adds the path of the content box to @cr for a given border box.
|
||
* This function respects rounded corners.
|
||
*
|
||
* This is useful if you are drawing content that is supposed to
|
||
* fill the whole content area, like the color buttons in
|
||
* #GtkColorChooserDialog.
|
||
**/
|
||
void
|
||
gtk_render_content_path (GtkStyleContext *context,
|
||
cairo_t *cr,
|
||
double x,
|
||
double y,
|
||
double width,
|
||
double height)
|
||
{
|
||
GtkRoundedBox box;
|
||
|
||
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
|
||
g_return_if_fail (cr != NULL);
|
||
|
||
_gtk_rounded_box_init_rect (&box, x, y, width, height);
|
||
_gtk_rounded_box_apply_border_radius_for_context (&box, context, 0);
|
||
|
||
_gtk_rounded_box_shrink (&box,
|
||
_gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_TOP_WIDTH), 100)
|
||
+ _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_TOP), 100),
|
||
_gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_RIGHT_WIDTH), 100)
|
||
+ _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_RIGHT), 100),
|
||
_gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_BOTTOM_WIDTH), 100)
|
||
+ _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_BOTTOM), 100),
|
||
_gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_BORDER_LEFT_WIDTH), 100)
|
||
+ _gtk_css_number_value_get (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_PADDING_LEFT), 100));
|
||
|
||
_gtk_rounded_box_path (&box, cr);
|
||
}
|