[gtk+] themingengine: split a GtkThemingBackground object
- From: Cosimo Cecchi <cosimoc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+] themingengine: split a GtkThemingBackground object
- Date: Mon, 12 Dec 2011 11:49:50 +0000 (UTC)
commit a7f3a9ff7499bf001a2aca0b6ae4d73081615caf
Author: Cosimo Cecchi <cosimoc gnome org>
Date: Fri Dec 9 19:14:12 2011 -0500
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(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index dac497b..bbbf43a 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 0000000..75ef352
--- /dev/null
+++ b/gtk/gtkthemingbackground.c
@@ -0,0 +1,438 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2010 Carlos Garnacho <carlosg gnome org>
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * Authors: Carlos Garnacho <carlosg gnome org>
+ * Cosimo Cecchi <cosimoc gnome org>
+ *
+ * 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 <gdk/gdk.h>
+
+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 0000000..09353ac
--- /dev/null
+++ b/gtk/gtkthemingbackgroundprivate.h
@@ -0,0 +1,72 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2011 Red Hat, Inc.
+ *
+ * Author: Cosimo Cecchi <cosimoc gnome org>
+ *
+ * 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 <glib-object.h>
+#include <cairo.h>
+
+#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 5273f46..0579515 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))
{
[
Date Prev][
Date Next] [
Thread Prev][
Thread Next]
[
Thread Index]
[
Date Index]
[
Author Index]
