From a7f3a9ff7499bf001a2aca0b6ae4d73081615caf Mon Sep 17 00:00:00 2001 From: Cosimo Cecchi Date: Fri, 9 Dec 2011 19:14:12 -0500 Subject: [PATCH] themingengine: split a GtkThemingBackground object Allows easier modification and general sanity of the CSS background rendering code. --- gtk/Makefile.am | 2 + gtk/gtkthemingbackground.c | 438 ++++++++++++++++++++++++++++ gtk/gtkthemingbackgroundprivate.h | 72 +++++ gtk/gtkthemingengine.c | 455 ++++-------------------------- 4 files changed, 564 insertions(+), 403 deletions(-) create mode 100644 gtk/gtkthemingbackground.c create mode 100644 gtk/gtkthemingbackgroundprivate.h diff --git a/gtk/Makefile.am b/gtk/Makefile.am index dac497bb16..bbbf43a6e0 100644 --- a/gtk/Makefile.am +++ b/gtk/Makefile.am @@ -463,6 +463,7 @@ gtk_private_h_sources = \ gtktexttagprivate.h \ gtktexttypes.h \ gtktextutil.h \ + gtkthemingbackgroundprivate.h \ gtkthemingengineprivate.h \ gtktimeline.h \ gtktoolpaletteprivate.h \ @@ -702,6 +703,7 @@ gtk_base_c_sources = \ gtktexttypes.c \ gtktextutil.c \ gtktextview.c \ + gtkthemingbackground.c \ gtkthemingengine.c \ gtktimeline.c \ gtktoggleaction.c \ diff --git a/gtk/gtkthemingbackground.c b/gtk/gtkthemingbackground.c new file mode 100644 index 0000000000..75ef3529ed --- /dev/null +++ b/gtk/gtkthemingbackground.c @@ -0,0 +1,438 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 2010 Carlos Garnacho + * Copyright (C) 2011 Red Hat, Inc. + * + * Authors: Carlos Garnacho + * Cosimo Cecchi + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "gtkcsstypesprivate.h" +#include "gtkthemingbackgroundprivate.h" +#include "gtkthemingengineprivate.h" + +#include + +static void +_gtk_theming_background_apply_window_background (GtkThemingBackground *bg, + cairo_t *cr) +{ + if (gtk_theming_engine_has_class (bg->engine, "background")) + { + cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */ + cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); + cairo_paint (cr); + } +} + +static void +_gtk_theming_background_apply_running_transformation (GtkThemingBackground *bg, + cairo_t *cr) +{ + gboolean running; + gdouble progress; + cairo_pattern_t *other_pattern; + GtkStateFlags other_flags; + GdkRGBA other_bg; + cairo_pattern_t *new_pattern = NULL; + + running = gtk_theming_engine_state_is_running (bg->engine, GTK_STATE_PRELIGHT, &progress); + + if (!running) + return; + + if (bg->flags & GTK_STATE_FLAG_PRELIGHT) + { + other_flags = bg->flags & ~(GTK_STATE_FLAG_PRELIGHT); + progress = 1 - progress; + } + else + other_flags = bg->flags | GTK_STATE_FLAG_PRELIGHT; + + gtk_theming_engine_get_background_color (bg->engine, other_flags, &other_bg); + _gtk_theming_engine_get (bg->engine, other_flags, &bg->prop_context, + "background-image", &other_pattern, + NULL); + + if (bg->pattern && other_pattern) + { + cairo_pattern_type_t type, other_type; + gint n0, n1; + + cairo_pattern_get_color_stop_count (bg->pattern, &n0); + cairo_pattern_get_color_stop_count (other_pattern, &n1); + type = cairo_pattern_get_type (bg->pattern); + other_type = cairo_pattern_get_type (other_pattern); + + if (type == other_type && n0 == n1) + { + gdouble offset0, red0, green0, blue0, alpha0; + gdouble offset1, red1, green1, blue1, alpha1; + gdouble x00, x01, y00, y01, x10, x11, y10, y11; + gdouble r00, r01, r10, r11; + guint i; + + if (type == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (bg->pattern, &x00, &y00, &x01, &y01); + cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11); + + new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress); + } + else + { + cairo_pattern_get_radial_circles (bg->pattern, &x00, &y00, &r00, &x01, &y01, &r01); + cairo_pattern_get_radial_circles (other_pattern, &x10, &y10, &r10, &x11, &y11, &r11); + + new_pattern = cairo_pattern_create_radial (x00 + (x10 - x00) * progress, + y00 + (y10 - y00) * progress, + r00 + (r10 - r00) * progress, + x01 + (x11 - x01) * progress, + y01 + (y11 - y01) * progress, + r01 + (r11 - r01) * progress); + } + + cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST); + i = 0; + + /* Blend both gradients into one */ + while (i < n0 && i < n1) + { + cairo_pattern_get_color_stop_rgba (bg->pattern, i, + &offset0, + &red0, &green0, &blue0, + &alpha0); + cairo_pattern_get_color_stop_rgba (other_pattern, i, + &offset1, + &red1, &green1, &blue1, + &alpha1); + + cairo_pattern_add_color_stop_rgba (new_pattern, + offset0 + ((offset1 - offset0) * progress), + red0 + ((red1 - red0) * progress), + green0 + ((green1 - green0) * progress), + blue0 + ((blue1 - blue0) * progress), + alpha0 + ((alpha1 - alpha0) * progress)); + i++; + } + } + else + { + cairo_save (cr); + + cairo_rectangle (cr, 0, 0, bg->paint_area.width, bg->paint_area.height); + cairo_clip (cr); + + cairo_push_group (cr); + + cairo_scale (cr, bg->paint_area.width, bg->paint_area.height); + cairo_set_source (cr, other_pattern); + cairo_paint_with_alpha (cr, progress); + cairo_set_source (cr, bg->pattern); + cairo_paint_with_alpha (cr, 1.0 - progress); + + new_pattern = cairo_pop_group (cr); + + cairo_restore (cr); + } + } + else if (bg->pattern || other_pattern) + { + cairo_pattern_t *p; + const GdkRGBA *c; + gdouble x0, y0, x1, y1, r0, r1; + gint n, i; + + /* Blend a pattern with a color */ + if (bg->pattern) + { + p = bg->pattern; + c = &other_bg; + progress = 1 - progress; + } + else + { + p = other_pattern; + c = &bg->bg_color; + } + + if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR) + { + cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1); + new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1); + } + else + { + cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1); + new_pattern = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1); + } + + cairo_pattern_get_color_stop_count (p, &n); + + for (i = 0; i < n; i++) + { + gdouble red1, green1, blue1, alpha1; + gdouble offset; + + cairo_pattern_get_color_stop_rgba (p, i, + &offset, + &red1, &green1, &blue1, + &alpha1); + cairo_pattern_add_color_stop_rgba (new_pattern, offset, + c->red + ((red1 - c->red) * progress), + c->green + ((green1 - c->green) * progress), + c->blue + ((blue1 - c->blue) * progress), + c->alpha + ((alpha1 - c->alpha) * progress)); + } + } + else + { + /* Merge just colors */ + new_pattern = cairo_pattern_create_rgba (CLAMP (bg->bg_color.red + ((other_bg.red - bg->bg_color.red) * progress), 0, 1), + CLAMP (bg->bg_color.green + ((other_bg.green - bg->bg_color.green) * progress), 0, 1), + CLAMP (bg->bg_color.blue + ((other_bg.blue - bg->bg_color.blue) * progress), 0, 1), + CLAMP (bg->bg_color.alpha + ((other_bg.alpha - bg->bg_color.alpha) * progress), 0, 1)); + } + + if (new_pattern) + { + /* Replace pattern to use */ + cairo_pattern_destroy (bg->pattern); + bg->pattern = new_pattern; + } + + if (other_pattern) + cairo_pattern_destroy (other_pattern); +} + +static void +_gtk_theming_background_apply_origin (GtkThemingBackground *bg) +{ + GtkCssArea origin; + cairo_rectangle_t image_rect; + + gtk_theming_engine_get (bg->engine, bg->flags, + "background-origin", &origin, + NULL); + + /* The default size of the background image depends on the + background-origin value as this affects the top left + and the bottom right corners. */ + switch (origin) { + case GTK_CSS_AREA_BORDER_BOX: + image_rect.x = 0; + image_rect.y = 0; + image_rect.width = bg->paint_area.width; + image_rect.height = bg->paint_area.height; + break; + case GTK_CSS_AREA_CONTENT_BOX: + image_rect.x = bg->border.left + bg->padding.left; + image_rect.y = bg->border.top + bg->padding.top; + image_rect.width = bg->paint_area.width - bg->border.left - bg->border.right - bg->padding.left - bg->padding.right; + image_rect.height = bg->paint_area.height - bg->border.top - bg->border.bottom - bg->padding.top - bg->padding.bottom; + break; + case GTK_CSS_AREA_PADDING_BOX: + default: + image_rect.x = bg->border.left; + image_rect.y = bg->border.top; + image_rect.width = bg->paint_area.width - bg->border.left - bg->border.right; + image_rect.height = bg->paint_area.height - bg->border.top - bg->border.bottom; + break; + } + + bg->image_rect = image_rect; + bg->prop_context.width = image_rect.width; + bg->prop_context.height = image_rect.height; +} + +static void +_gtk_theming_background_apply_clip (GtkThemingBackground *bg) +{ + GtkCssArea clip; + + gtk_theming_engine_get (bg->engine, bg->flags, + "background-clip", &clip, + NULL); + + if (clip == GTK_CSS_AREA_PADDING_BOX) + { + _gtk_rounded_box_shrink (&bg->clip_box, + bg->border.top, bg->border.right, + bg->border.bottom, bg->border.left); + } + else if (clip == GTK_CSS_AREA_CONTENT_BOX) + { + _gtk_rounded_box_shrink (&bg->clip_box, + bg->border.top + bg->padding.top, + bg->border.right + bg->padding.right, + bg->border.bottom + bg->padding.bottom, + bg->border.left + bg->padding.left); + } +} + +static void +_gtk_theming_background_paint (GtkThemingBackground *bg, + cairo_t *cr) +{ + _gtk_rounded_box_path (&bg->clip_box, cr); + gdk_cairo_set_source_rgba (cr, &bg->bg_color); + + if (bg->pattern) + { + GtkCssBackgroundRepeat *repeat; + cairo_surface_t *surface; + int scale_width, scale_height; + + gtk_theming_engine_get (bg->engine, bg->flags, + "background-repeat", &repeat, + NULL); + + /* Fill background color first */ + cairo_fill_preserve (cr); + + if (cairo_pattern_get_surface (bg->pattern, &surface) != CAIRO_STATUS_SUCCESS) + surface = NULL; + + if (surface && repeat && + repeat->repeat != GTK_CSS_BACKGROUND_REPEAT_STYLE_NONE) + { + scale_width = cairo_image_surface_get_width (surface); + scale_height = cairo_image_surface_get_height (surface); + if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT) + cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_REPEAT); + else if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT) + cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_NONE); + } + else + { + cairo_pattern_set_extend (bg->pattern, CAIRO_EXTEND_PAD); + scale_width = bg->image_rect.width; + scale_height = bg->image_rect.height; + } + + cairo_translate (cr, bg->image_rect.x, bg->image_rect.y); + cairo_scale (cr, scale_width, scale_height); + cairo_set_source (cr, bg->pattern); + cairo_scale (cr, 1.0 / scale_width, 1.0 / scale_height); + cairo_translate (cr, -bg->image_rect.x, -bg->image_rect.y); + + g_free (repeat); + + cairo_pattern_destroy (bg->pattern); + bg->pattern = NULL; + } + + cairo_fill (cr); +} + +static void +_gtk_theming_background_apply_shadow (GtkThemingBackground *bg, + cairo_t *cr) +{ + GtkShadow *box_shadow; + + gtk_theming_engine_get (bg->engine, bg->flags, + "box-shadow", &box_shadow, + NULL); + + if (box_shadow != NULL) + { + _gtk_box_shadow_render (box_shadow, cr, &bg->padding_box); + _gtk_shadow_unref (box_shadow); + } +} + +static void +_gtk_theming_background_init_engine (GtkThemingBackground *bg) +{ + bg->flags = gtk_theming_engine_get_state (bg->engine); + + gtk_theming_engine_get_border (bg->engine, bg->flags, &bg->border); + gtk_theming_engine_get_padding (bg->engine, bg->flags, &bg->padding); + gtk_theming_engine_get_background_color (bg->engine, bg->flags, &bg->bg_color); + + /* In the CSS box model, by default the background positioning area is + * the padding-box, i.e. all the border-box minus the borders themselves, + * which determines also its default size, see + * http://dev.w3.org/csswg/css3-background/#background-origin + * + * In the future we might want to support different origins or clips, but + * right now we just shrink to the default. + */ + _gtk_rounded_box_init_rect (&bg->padding_box, 0, 0, bg->paint_area.width, bg->paint_area.height); + _gtk_rounded_box_apply_border_radius (&bg->padding_box, bg->engine, bg->flags, bg->junction); + + bg->clip_box = bg->padding_box; + _gtk_rounded_box_shrink (&bg->padding_box, + bg->border.top, bg->border.right, + bg->border.bottom, bg->border.left); + + _gtk_theming_background_apply_clip (bg); + _gtk_theming_background_apply_origin (bg); + + _gtk_theming_engine_get (bg->engine, bg->flags, &bg->prop_context, + "background-image", &bg->pattern, + NULL); +} + +void +_gtk_theming_background_init (GtkThemingBackground *bg, + GtkThemingEngine *engine, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + GtkJunctionSides junction) +{ + g_assert (bg != NULL); + + bg->engine = engine; + + bg->paint_area.x = x; + bg->paint_area.y = y; + bg->paint_area.width = width; + bg->paint_area.height = height; + + bg->pattern = NULL; + bg->junction = junction; + + _gtk_theming_background_init_engine (bg); +} + +void +_gtk_theming_background_render (GtkThemingBackground *bg, + cairo_t *cr) +{ + cairo_save (cr); + cairo_translate (cr, bg->paint_area.x, bg->paint_area.y); + + _gtk_theming_background_apply_window_background (bg, cr); + _gtk_theming_background_apply_running_transformation (bg, cr); + _gtk_theming_background_paint (bg, cr); + _gtk_theming_background_apply_shadow (bg, cr); + + cairo_restore (cr); +} + +gboolean +_gtk_theming_background_has_background_image (GtkThemingBackground *bg) +{ + return (bg->pattern != NULL) ? TRUE : FALSE; +} diff --git a/gtk/gtkthemingbackgroundprivate.h b/gtk/gtkthemingbackgroundprivate.h new file mode 100644 index 0000000000..09353acd81 --- /dev/null +++ b/gtk/gtkthemingbackgroundprivate.h @@ -0,0 +1,72 @@ +/* GTK - The GIMP Toolkit + * Copyright (C) 2011 Red Hat, Inc. + * + * Author: Cosimo Cecchi + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GTK_THEMING_BACKGROUND_PRIVATE_H__ +#define __GTK_THEMING_BACKGROUND_PRIVATE_H__ + +#include +#include + +#include "gtkstylecontext.h" +#include "gtkstylecontextprivate.h" +#include "gtkroundedboxprivate.h" +#include "gtkshadowprivate.h" + +G_BEGIN_DECLS + +typedef struct _GtkThemingBackground GtkThemingBackground; + +struct _GtkThemingBackground { + GtkThemingEngine *engine; + + cairo_rectangle_t paint_area; + cairo_rectangle_t image_rect; + + GtkJunctionSides junction; + cairo_pattern_t *pattern; + + GtkRoundedBox padding_box; + GtkRoundedBox clip_box; + + GtkStateFlags flags; + GtkBorder border; + GtkBorder padding; + GdkRGBA bg_color; + + GtkStylePropertyContext prop_context; +}; + +void _gtk_theming_background_init (GtkThemingBackground *bg, + GtkThemingEngine *engine, + gdouble x, + gdouble y, + gdouble width, + gdouble height, + GtkJunctionSides junction); + +void _gtk_theming_background_render (GtkThemingBackground *bg, + cairo_t *cr); + +gboolean _gtk_theming_background_has_background_image (GtkThemingBackground *bg); + +G_END_DECLS + +#endif /* __GTK_THEMING_BACKGROUND_PRIVATE_H__ */ diff --git a/gtk/gtkthemingengine.c b/gtk/gtkthemingengine.c index 5273f464fb..05795152eb 100644 --- a/gtk/gtkthemingengine.c +++ b/gtk/gtkthemingengine.c @@ -34,6 +34,7 @@ #include "gtkcsstypesprivate.h" #include "gtkthemingengineprivate.h" #include "gtkroundedboxprivate.h" +#include "gtkthemingbackgroundprivate.h" /** * SECTION:gtkthemingengine @@ -183,14 +184,6 @@ static void gtk_theming_engine_render_icon (GtkThemingEngine *engine, GdkPixbuf *pixbuf, gdouble x, gdouble y); -static void render_background_internal (GtkThemingEngine *engine, - cairo_t *cr, - gdouble x, - gdouble y, - gdouble width, - gdouble height, - GtkJunctionSides junction, - cairo_pattern_t *optional_background); G_DEFINE_TYPE (GtkThemingEngine, gtk_theming_engine, G_TYPE_OBJECT) @@ -1093,8 +1086,18 @@ gtk_theming_engine_render_check (GtkThemingEngine *engine, GtkBorderStyle border_style; GtkBorder border; gint border_width; - GtkStylePropertyContext context; - cairo_pattern_t *pattern; + GtkThemingBackground bg; + + _gtk_theming_background_init (&bg, engine, + x, y, + width, height, + gtk_theming_engine_get_junction_sides (engine)); + + if (_gtk_theming_background_has_background_image (&bg)) + { + _gtk_theming_background_render (&bg, cr); + return; + } flags = gtk_theming_engine_get_state (engine); cairo_save (cr); @@ -1103,22 +1106,9 @@ gtk_theming_engine_render_check (GtkThemingEngine *engine, gtk_theming_engine_get_background_color (engine, flags, &bg_color); gtk_theming_engine_get_border (engine, flags, &border); - context.width = width; - context.height = height; - - _gtk_theming_engine_get (engine, flags, &context, - "background-image", &pattern, - "border-style", &border_style, - NULL); - - if (pattern != NULL) - { - render_background_internal (engine, cr, x, y, width, height, - gtk_theming_engine_get_junction_sides (engine), pattern); - cairo_restore (cr); - cairo_pattern_destroy (pattern); - return; - } + gtk_theming_engine_get (engine, flags, + "border-style", &border_style, + NULL); border_width = MIN (MIN (border.top, border.bottom), MIN (border.left, border.right)); @@ -1228,8 +1218,18 @@ gtk_theming_engine_render_option (GtkThemingEngine *engine, gint exterior_size, interior_size, pad, thickness, border_width; GtkBorderStyle border_style; GtkBorder border; - GtkStylePropertyContext context; - cairo_pattern_t *pattern; + GtkThemingBackground bg; + + _gtk_theming_background_init (&bg, engine, + x, y, + width, height, + gtk_theming_engine_get_junction_sides (engine)); + + if (_gtk_theming_background_has_background_image (&bg)) + { + _gtk_theming_background_render (&bg, cr); + return; + } flags = gtk_theming_engine_get_state (engine); @@ -1239,22 +1239,9 @@ gtk_theming_engine_render_option (GtkThemingEngine *engine, gtk_theming_engine_get_background_color (engine, flags, &bg_color); gtk_theming_engine_get_border (engine, flags, &border); - context.width = width; - context.height = height; - - _gtk_theming_engine_get (engine, flags, &context, - "background-image", &pattern, - "border-style", &border_style, - NULL); - - if (pattern != NULL) - { - render_background_internal (engine, cr, x, y, width, height, - gtk_theming_engine_get_junction_sides (engine), pattern); - cairo_restore (cr); - cairo_pattern_destroy (pattern); - return; - } + gtk_theming_engine_get (engine, flags, + "border-style", &border_style, + NULL); exterior_size = MIN (width, height); border_width = MIN (MIN (border.top, border.bottom), @@ -1427,353 +1414,6 @@ color_shade (const GdkRGBA *color, gtk_symbolic_color_unref (shade); } -/* optional_background is the background-image, in case it was - already availible we avoid getting it (and thus possibly - rendering it) twice */ -static void -render_background_internal (GtkThemingEngine *engine, - cairo_t *cr, - gdouble x, - gdouble y, - gdouble width, - gdouble height, - GtkJunctionSides junction, - cairo_pattern_t *optional_background) -{ - GdkRGBA bg_color; - cairo_pattern_t *pattern; - GtkCssBackgroundRepeat *repeat; - GtkStateFlags flags; - gboolean running; - gdouble progress; - GtkRoundedBox padding_box; - GtkRoundedBox clip_box; - GtkShadow *box_shadow; - GtkBorder border, padding; - GtkStylePropertyContext context; - GtkCssArea clip, origin; - gdouble bg_width, bg_height, bg_x, bg_y; - - flags = gtk_theming_engine_get_state (engine); - - gtk_theming_engine_get_background_color (engine, flags, &bg_color); - - gtk_theming_engine_get (engine, flags, - "background-origin", &origin, - "background-clip", &clip, - "background-repeat", &repeat, - "box-shadow", &box_shadow, - NULL); - - gtk_theming_engine_get_border (engine, flags, &border); - gtk_theming_engine_get_padding (engine, flags, &padding); - - /* The default size of the background image depends on the - background-origin value as this affects the top left - and the bottom right corners. */ - switch (origin) { - case GTK_CSS_AREA_BORDER_BOX: - bg_x = 0; - bg_y = 0; - bg_width = width; - bg_height = height; - break; - case GTK_CSS_AREA_CONTENT_BOX: - bg_x = border.left + padding.left; - bg_y = border.top + padding.top; - bg_width = width - border.left - border.right - padding.left - padding.right; - bg_height = height - border.top - border.bottom - padding.top - padding.bottom; - break; - case GTK_CSS_AREA_PADDING_BOX: - default: - bg_x = border.left; - bg_y = border.top; - bg_width = width - border.left - border.right; - bg_height = height - border.top - border.bottom; - break; - } - - context.width = bg_width; - context.height = bg_height; - - if (optional_background) - pattern = cairo_pattern_reference (optional_background); - else - _gtk_theming_engine_get (engine, flags, &context, - "background-image", &pattern, - NULL); - - - cairo_save (cr); - cairo_translate (cr, x, y); - - running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress); - - if (gtk_theming_engine_has_class (engine, "background")) - { - cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.0); /* transparent */ - cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE); - cairo_paint (cr); - } - - if (running) - { - cairo_pattern_t *other_pattern; - GtkStateFlags other_flags; - GdkRGBA other_bg; - cairo_pattern_t *new_pattern = NULL; - - if (flags & GTK_STATE_FLAG_PRELIGHT) - { - other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT); - progress = 1 - progress; - } - else - other_flags = flags | GTK_STATE_FLAG_PRELIGHT; - - gtk_theming_engine_get_background_color (engine, other_flags, &other_bg); - _gtk_theming_engine_get (engine, other_flags, &context, - "background-image", &other_pattern, - NULL); - - if (pattern && other_pattern) - { - cairo_pattern_type_t type, other_type; - gint n0, n1; - - cairo_pattern_get_color_stop_count (pattern, &n0); - cairo_pattern_get_color_stop_count (other_pattern, &n1); - type = cairo_pattern_get_type (pattern); - other_type = cairo_pattern_get_type (other_pattern); - - if (type == other_type && n0 == n1) - { - gdouble offset0, red0, green0, blue0, alpha0; - gdouble offset1, red1, green1, blue1, alpha1; - gdouble x00, x01, y00, y01, x10, x11, y10, y11; - gdouble r00, r01, r10, r11; - guint i; - - if (type == CAIRO_PATTERN_TYPE_LINEAR) - { - cairo_pattern_get_linear_points (pattern, &x00, &y00, &x01, &y01); - cairo_pattern_get_linear_points (other_pattern, &x10, &y10, &x11, &y11); - - new_pattern = cairo_pattern_create_linear (x00 + (x10 - x00) * progress, - y00 + (y10 - y00) * progress, - x01 + (x11 - x01) * progress, - y01 + (y11 - y01) * progress); - } - else - { - cairo_pattern_get_radial_circles (pattern, &x00, &y00, &r00, &x01, &y01, &r01); - cairo_pattern_get_radial_circles (other_pattern, &x10, &y10, &r10, &x11, &y11, &r11); - - new_pattern = cairo_pattern_create_radial (x00 + (x10 - x00) * progress, - y00 + (y10 - y00) * progress, - r00 + (r10 - r00) * progress, - x01 + (x11 - x01) * progress, - y01 + (y11 - y01) * progress, - r01 + (r11 - r01) * progress); - } - - cairo_pattern_set_filter (new_pattern, CAIRO_FILTER_FAST); - i = 0; - - /* Blend both gradients into one */ - while (i < n0 && i < n1) - { - cairo_pattern_get_color_stop_rgba (pattern, i, - &offset0, - &red0, &green0, &blue0, - &alpha0); - cairo_pattern_get_color_stop_rgba (other_pattern, i, - &offset1, - &red1, &green1, &blue1, - &alpha1); - - cairo_pattern_add_color_stop_rgba (new_pattern, - offset0 + ((offset1 - offset0) * progress), - red0 + ((red1 - red0) * progress), - green0 + ((green1 - green0) * progress), - blue0 + ((blue1 - blue0) * progress), - alpha0 + ((alpha1 - alpha0) * progress)); - i++; - } - } - else - { - cairo_save (cr); - - cairo_rectangle (cr, 0, 0, width, height); - cairo_clip (cr); - - cairo_push_group (cr); - - cairo_scale (cr, width, height); - cairo_set_source (cr, other_pattern); - cairo_paint_with_alpha (cr, progress); - cairo_set_source (cr, pattern); - cairo_paint_with_alpha (cr, 1.0 - progress); - - new_pattern = cairo_pop_group (cr); - - cairo_restore (cr); - } - } - else if (pattern || other_pattern) - { - cairo_pattern_t *p; - const GdkRGBA *c; - gdouble x0, y0, x1, y1, r0, r1; - gint n, i; - - /* Blend a pattern with a color */ - if (pattern) - { - p = pattern; - c = &other_bg; - progress = 1 - progress; - } - else - { - p = other_pattern; - c = &bg_color; - } - - if (cairo_pattern_get_type (p) == CAIRO_PATTERN_TYPE_LINEAR) - { - cairo_pattern_get_linear_points (p, &x0, &y0, &x1, &y1); - new_pattern = cairo_pattern_create_linear (x0, y0, x1, y1); - } - else - { - cairo_pattern_get_radial_circles (p, &x0, &y0, &r0, &x1, &y1, &r1); - new_pattern = cairo_pattern_create_radial (x0, y0, r0, x1, y1, r1); - } - - cairo_pattern_get_color_stop_count (p, &n); - - for (i = 0; i < n; i++) - { - gdouble red1, green1, blue1, alpha1; - gdouble offset; - - cairo_pattern_get_color_stop_rgba (p, i, - &offset, - &red1, &green1, &blue1, - &alpha1); - cairo_pattern_add_color_stop_rgba (new_pattern, offset, - c->red + ((red1 - c->red) * progress), - c->green + ((green1 - c->green) * progress), - c->blue + ((blue1 - c->blue) * progress), - c->alpha + ((alpha1 - c->alpha) * progress)); - } - } - else - { - /* Merge just colors */ - new_pattern = cairo_pattern_create_rgba (CLAMP (bg_color.red + ((other_bg.red - bg_color.red) * progress), 0, 1), - CLAMP (bg_color.green + ((other_bg.green - bg_color.green) * progress), 0, 1), - CLAMP (bg_color.blue + ((other_bg.blue - bg_color.blue) * progress), 0, 1), - CLAMP (bg_color.alpha + ((other_bg.alpha - bg_color.alpha) * progress), 0, 1)); - } - - if (new_pattern) - { - /* Replace pattern to use */ - cairo_pattern_destroy (pattern); - pattern = new_pattern; - } - - if (other_pattern) - cairo_pattern_destroy (other_pattern); - } - - /* In the CSS box model, by default the background positioning area is - * the padding-box, i.e. all the border-box minus the borders themselves, - * which determines also its default size, see - * http://dev.w3.org/csswg/css3-background/#background-origin - * - * In the future we might want to support different origins or clips, but - * right now we just shrink to the default. - */ - _gtk_rounded_box_init_rect (&padding_box, 0, 0, width, height); - _gtk_rounded_box_apply_border_radius (&padding_box, engine, flags, junction); - clip_box = padding_box; - _gtk_rounded_box_shrink (&padding_box, - border.top, border.right, - border.bottom, border.left); - if (clip == GTK_CSS_AREA_PADDING_BOX) - { - _gtk_rounded_box_shrink (&clip_box, - border.top, border.right, - border.bottom, border.left); - } - else if (clip == GTK_CSS_AREA_CONTENT_BOX) - { - _gtk_rounded_box_shrink (&clip_box, - border.top + padding.top, - border.right + padding.right, - border.bottom + padding.bottom, - border.left + padding.left); - } - - _gtk_rounded_box_path (&clip_box, cr); - - gdk_cairo_set_source_rgba (cr, &bg_color); - if (pattern) - { - cairo_surface_t *surface; - int scale_width, scale_height; - - /* Fill background color first */ - cairo_fill_preserve (cr); - - if (cairo_pattern_get_surface (pattern, &surface) != CAIRO_STATUS_SUCCESS) - surface = NULL; - - if (surface && repeat && - repeat->repeat != GTK_CSS_BACKGROUND_REPEAT_STYLE_NONE) - { - scale_width = cairo_image_surface_get_width (surface); - scale_height = cairo_image_surface_get_height (surface); - if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_REPEAT) - cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT); - else if (repeat->repeat == GTK_CSS_BACKGROUND_REPEAT_STYLE_NO_REPEAT) - cairo_pattern_set_extend (pattern, CAIRO_EXTEND_NONE); - } - else - { - cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD); - scale_width = bg_width; - scale_height = bg_height; - } - - cairo_translate (cr, bg_x, bg_y); - cairo_scale (cr, scale_width, scale_height); - cairo_set_source (cr, pattern); - cairo_scale (cr, 1.0 / scale_width, 1.0 / scale_height); - cairo_translate (cr, -bg_x, -bg_y); - } - - cairo_fill (cr); - - if (pattern) - cairo_pattern_destroy (pattern); - - if (repeat) - g_free (repeat); - - if (box_shadow != NULL) - { - _gtk_box_shadow_render (box_shadow, cr, &padding_box); - _gtk_shadow_unref (box_shadow); - } - - cairo_restore (cr); -} - static void gtk_theming_engine_render_background (GtkThemingEngine *engine, cairo_t *cr, @@ -1782,13 +1422,14 @@ gtk_theming_engine_render_background (GtkThemingEngine *engine, gdouble width, gdouble height) { - GtkJunctionSides junction; + GtkThemingBackground bg; - junction = gtk_theming_engine_get_junction_sides (engine); + _gtk_theming_background_init (&bg, engine, + x, y, + width, height, + gtk_theming_engine_get_junction_sides (engine)); - render_background_internal (engine, cr, - x, y, width, height, - junction, NULL); + _gtk_theming_background_render (&bg, cr); } static void @@ -2469,6 +2110,7 @@ gtk_theming_engine_render_extension (GtkThemingEngine *engine, gdouble height, GtkPositionType gap_side) { + GtkThemingBackground bg; GtkJunctionSides junction = 0; guint hidden_side = 0; @@ -2507,13 +2149,18 @@ gtk_theming_engine_render_extension (GtkThemingEngine *engine, if (gap_side == GTK_POS_TOP || gap_side == GTK_POS_BOTTOM) - render_background_internal (engine, cr, - 0, 0, width, height, - GTK_JUNCTION_BOTTOM, NULL); + _gtk_theming_background_init (&bg, engine, + 0, 0, + width, height, + GTK_JUNCTION_BOTTOM); else - render_background_internal (engine, cr, - 0, 0, height, width, - GTK_JUNCTION_BOTTOM, NULL); + _gtk_theming_background_init (&bg, engine, + 0, 0, + height, width, + GTK_JUNCTION_BOTTOM); + + _gtk_theming_background_render (&bg, cr); + cairo_restore (cr); cairo_save (cr); @@ -2567,6 +2214,7 @@ gtk_theming_engine_render_handle (GtkThemingEngine *engine, GtkStateFlags flags; GdkRGBA bg_color, lighter, darker; GtkJunctionSides sides; + GtkThemingBackground bg; gint xx, yy; cairo_save (cr); @@ -2579,7 +2227,8 @@ gtk_theming_engine_render_handle (GtkThemingEngine *engine, color_shade (&bg_color, 0.7, &darker); color_shade (&bg_color, 1.3, &lighter); - render_background_internal (engine, cr, x, y, width, height, sides, NULL); + _gtk_theming_background_init (&bg, engine, x, y, width, height, sides); + _gtk_theming_background_render (&bg, cr); if (gtk_theming_engine_has_class (engine, GTK_STYLE_CLASS_GRIP)) { -- 2.30.2